Tag Archives: Ontario

Nanotechnology for better treatment of eye conditions and a perspective on superhuman sight

There are three ‘eye’-related items in this piece, two of them concerning animal eyes and one concerning a camera-eye or the possibility of superhuman sight.

Earlier this week researchers at the University of Reading (UK) announced they have achieved a better understanding of how nanoparticles might be able to bypass some of the eye’s natural barriers in the hopes of making eye drops more effective in an Oct. 7, 2014 news item on Nanowerk,

Sufferers of eye disorders have new hope after researchers at the University of Reading discovered a potential way of making eye drops more effective.

Typically less than 5% of the medicine dose applied as drops actually penetrates the eye – the majority of the dose will be washed off the cornea by tear fluid and lost.

The team, led by Professor Vitaliy Khutoryanskiy, has developed novel nanoparticles that could attach to the cornea and resist the wash out effect for an extended period of time. If these nanoparticles are loaded with a drug, their longer attachment to the cornea will ensure more medicine penetrates the eye and improves drop treatment.

An Oct. 6, 2014 University of Reading press release, which originated the news item, provides more information about the hoped for impact of this work while providing few details about the research (Note: A link has been removed),

The research could also pave the way for new treatments of currently incurable eye-disorders such as Age-related Macular Degeneration (AMD) – the leading cause of visual impairment with around 500,000 sufferers in the UK.

There is currently no cure for this condition but experts believe the progression of AMD could be slowed considerably using injections of medicines into the eye. However, eye-drops with drug-loaded nanoparticles could be a potentially more effective and desirable course of treatment.

Professor Vitaliy Khutoryanskiy, from the University of Reading’s School of Pharmacy, said: “Treating eye disorders is a challenging task. Our corneas allow us to see and serve as a barrier that protects our eyes from microbial and chemical intervention. Unfortunately this barrier hinders the effectiveness of eye drops. Many medicines administered to the eye are inefficient as they often cannot penetrate the cornea barrier. Only the very small molecules in eye drops can penetrate healthy cornea.

“Many recent breakthroughs to treat eye conditions involve the use of drugs incorporated into nano-containers; their role being to promote drug penetration into the eye.  However the factors affecting this penetration remain poorly understood. Our research also showed that penetration of small drug molecules could be improved by adding enhancers such as cyclodextrins. This means eye drops have the potential to be a more effective, and a more comfortable, future treatment for disorders such as AMD.”

The finding is one of a number of important discoveries highlighted in a paper published today in the journal Molecular Pharmaceutics. The researchers revealed fascinating insights into how the structure of the cornea prevents various small and large molecules, as well as nanoparticles, from entering into the eye. They also examined the effects any damage to the eye would have in allowing these materials to enter the body.

Professor Khutoryanskiy continued: “There is increasing concern about the safety of environmental contaminants, pollutants and nanoparticles and their potential impacts on human health. We tested nanoparticles whose sizes ranged between 21 – 69 nm, similar to the size of viruses such as polio, or similar to airborn particles originating from building industry and found that they could not penetrate healthy and intact cornea irrespective of their chemical nature.

“However if the top layer of the cornea is damaged, either after surgical operation or accidentally, then the eye’s natural defence may be compromised and it becomes susceptible to viral attack which could result in eye infections.

“The results show that our eyes are well-equipped to defend us against potential airborne threats that exist in a fast-developing industrialised world. However we need to be aware of the potential complications that may arise if the cornea is damaged, and not treated quickly and effectively.”

Here’s a link to and a citation for the paper,

On the Barrier Properties of the Cornea: A Microscopy Study of the Penetration of Fluorescently Labeled Nanoparticles, Polymers, and Sodium Fluorescein by Ellina A. Mun, Peter W. J. Morrison, Adrian C. Williams, and Vitaliy V. Khutoryanskiy. Mol. Pharmaceutics, 2014, 11 (10), pp 3556–3564 DOI: 10.1021/mp500332m Publication Date (Web): August 28, 2014

Copyright © 2014 American Chemical Society

There’s a little more information to be had in the paper’s abstract, which is, as these things go, is relatively accessible,

[downloaded from http://pubs.acs.org/doi/abs/10.1021/mp500332m]

[downloaded from http://pubs.acs.org/doi/abs/10.1021/mp500332m]

Overcoming the natural defensive barrier functions of the eye remains one of the greatest challenges of ocular drug delivery. Cornea is a chemical and mechanical barrier preventing the passage of any foreign bodies including drugs into the eye, but the factors limiting penetration of permeants and nanoparticulate drug delivery systems through the cornea are still not fully understood. In this study, we investigate these barrier properties of the cornea using thiolated and PEGylated (750 and 5000 Da) nanoparticles, sodium fluorescein, and two linear polymers (dextran and polyethylene glycol). Experiments used intact bovine cornea in addition to bovine cornea de-epithelialized or tissues pretreated with cyclodextrin. It was shown that corneal epithelium is the major barrier for permeation; pretreatment of the cornea with β-cyclodextrin provides higher permeation of low molecular weight compounds, such as sodium fluorescein, but does not enhance penetration of nanoparticles and larger molecules. Studying penetration of thiolated and PEGylated (750 and 5000 Da) nanoparticles into the de-epithelialized ocular tissue revealed that interactions between corneal surface and thiol groups of nanoparticles were more significant determinants of penetration than particle size (for the sizes used here). PEGylation with polyethylene glycol of a higher molecular weight (5000 Da) allows penetration of nanoparticles into the stroma, which proceeds gradually, after an initial 1 h lag phase.

The paper is behind a paywall. No mention is made in the abstract or in the press release as to how the bovine (ox, cow, or buffalo) eyes were obtained but I gather these body parts are often harvested from animals that have been previously slaughtered for food.

This next item also concerns research about eye drops but this time the work comes from the University of Waterloo (Ontario, Canada). From an Oct. 8, 2014 news item on Azonano,

For the millions of sufferers of dry eye syndrome, their only recourse to easing the painful condition is to use drug-laced eye drops three times a day. Now, researchers from the University of Waterloo have developed a topical solution containing nanoparticles that will combat dry eye syndrome with only one application a week.

An Oct. 8, 2014 University of Waterloo news release (also on EurekAlert), which originated the news item, describes the results of the work without providing much detail about the nanoparticles used to deliver the treatment via eye drops,

The eye drops progressively deliver the right amount of drug-infused nanoparticles to the surface of the eyeball over a period of five days before the body absorbs them.  One weekly dose replaces 15 or more to treat the pain and irritation of dry eyes.

The nanoparticles, about 1/1000th the width of a human hair, stick harmlessly to the eye’s surface and use only five per cent of the drug normally required.

“You can’t tell the difference between these nanoparticle eye drops and water,” said Shengyan (Sandy) Liu, a PhD candidate at Waterloo’s Faculty of Engineering, who led the team of researchers from the Department of Chemical Engineering and the Centre for Contact Lens Research. “There’s no irritation to the eye.”

Dry eye syndrome is a more common ailment for people over the age of 50 and may eventually lead to eye damage. More than six per cent of people in the U.S. have it. Currently, patients must frequently apply the medicine three times a day because of the eye’s ability to self-cleanse—a process that washes away 95 per cent of the drug.

“I knew that if we focused on infusing biocompatible nanoparticles with Cyclosporine A, the drug in the eye drops, and make them stick to the eyeball without irritation for longer periods of time, it would also save patients time and reduce the possibility of toxic exposure due to excessive use of eye drops,” said Liu.

The research team is now focusing on preparing the nanoparticle eye drops for clinical trials with the hope that this nanoparticle therapy could reach the shelves of drugstores within five years.

Here’s a link to and a citation for the paper,

Phenylboronic acid modified mucoadhesive nanoparticle drug carriers facilitate weekly treatment of experimentallyinduced dry eye syndrome by Shengyan Liu, Chu Ning Chang, Mohit S. Verma, Denise Hileeto, Alex Muntz, Ulrike Stahl, Jill Woods, Lyndon W. Jones, and Frank X. Gu. Nano Research (October 2014) DOI: 10.1007/s12274-014-0547-3

This paper is behind a paywall. There is a partial preview available for free. As per the paper’s abstract, research was performed on healthy rabbit eyes.

The last ‘sight’ item I’m featuring here comes from the Massachusetts Institute of Technology (MIT) and does not appear to have been occasioned by the publication of a research paper or some other event. From an Oct. 7, 2014 news item on Azonano,

All through his childhood, Ramesh Raskar wished fervently for eyes in the back of his head. “I had the notion that the world did not exist if I wasn’t looking at it, so I would constantly turn around to see if it was there behind me.” Although this head-spinning habit faded during his teen years, Raskar never lost the desire to possess the widest possible field of vision.

Today, as director of the Camera Culture research group and associate professor of Media Arts and Sciences at the MIT Media Lab, Raskar is realizing his childhood fantasy, and then some. His inventions include a nanocamera that operates at the speed of light and do-it-yourself tools for medical imaging. His scientific mission? “I want to create not just a new kind of vision, but superhuman vision,” Raskar says.

An Oct. 6, 2014 MIT news release, which originated the news item, provides more information about Raskar and his research,

He avoids research projects launched with a goal in mind, “because then you only come up with the same solutions as everyone else.” Discoveries tend to cascade from one area into another. For instance, Raskar’s novel computational methods for reducing motion blur in photography suggested new techniques for analyzing how light propagates. “We do matchmaking; what we do here can be used over there,” says Raskar.

Inspired by the famous microflash photograph of a bullet piercing an apple, created in 1964 by MIT professor and inventor Harold “Doc” Edgerton, Raskar realized, “I can do Edgerton millions of times faster.” This led to one of the Camera Culture group’s breakthrough inventions, femtophotography, a process for recording light in flight.

Manipulating photons into a packet resembling Edgerton’s bullet, Raskar and his team were able to “shoot” ultrashort laser pulses through a Coke bottle. Using a special camera to capture the action of these pulses at half a trillion frames per second with two-trillionths of a second exposure times, they captured moving images of light, complete with wave-like shadows lapping at the exterior of the bottle.

Femtophotography opened up additional avenues of inquiry, as Raskar pondered what other features of the world superfast imaging processes might reveal. He was particularly intrigued by scattered light, the kind in evidence when fog creates the visual equivalent of “noise.”

In one experiment, Raskar’s team concealed an object behind a wall, out of camera view. By firing super-short laser bursts onto a surface nearby, and taking millions of exposures of light bouncing like a pinball around the scene, the group rendered a picture of the hidden object. They had effectively created a camera that peers around corners, an invention that might someday help emergency responders safely investigate a dangerous environment.

Raskar’s objective of “making the invisible visible” extends as well to the human body. The Camera Culture group has developed a technique for taking pictures of the eye using cellphone attachments, spawning inexpensive, patient-managed vision and disease diagnostics. Conventional photography has evolved from time-consuming film development to instantaneous digital snaps, and Raskar believes “the same thing will happen to medical imaging.” His research group intends “to break all the rules and be at the forefront. I think we’ll get there in the next few years,” he says.

Ultimately, Raskar predicts, imaging will serve as a catalyst of transformation in all dimensions of human life — change that can’t come soon enough for him. “I hate ordinary cameras,” he says. “They record only what I see. I want a camera that gives me a superhuman perspective.”

Following the link to the MIT news release will lead you to more information about Raskar and his work. You can also see and hear Raskar talk about his femtophotography in a 2012 TEDGlobal talk here.

Fishnet of gold atoms improves solar cell performance

Apparently they’re calling the University of Western Ontario by a new name, Western University. Given the university’s location in what is generally acknowledged as central Canada or, sometimes, as eastern Canada, this seems like a geographically confusing approach not only in Canada but elsewhere too. After all, more than one country boasts a ‘west’.

A Sept. 26, 2014 news item on Nanowerk highlights new work on improving solar cell performance (Note: A link has been removed),

Scientists at Western University [Ontario, Canada] have discovered that a small molecule created with just 144 atoms of gold can increase solar cell performance by more than 10 per cent. These findings, published recently by the high-impact journal Nanoscale (“Tessellated gold nanostructures from Au144(SCH2CH2Ph)60 molecular precursors and their use in organic solar cell enhancement”), represent a game-changing innovation that holds the potential to take solar power mainstream and dramatically decrease the world’s dependence on traditional, resource-based sources of energy, says Giovanni Fanchini from Western’s Faculty of Science.

For those of us who remember ‘times tables’, the number 144 can have a special meaning as it is the last number (’12’ times ’12’ equals ‘144’) one was obliged to memorize. At least, that was true at my school in Vancouver, Canada but perhaps not elsewhere, eh?

Getting back to the ‘fishnet’, a Sept. 25, 2014 Western University news release, which originated the news item, expands the business possibilities for this work,

Fanchini, the Canada Research Chair in Carbon-based Nanomaterials and Nano-optoelectronics, says the new technology could easily be fast-tracked and integrated into prototypes of solar panels in one to two years and solar-powered phones in as little as five years.

“Every time you recharge your cell phone, you have to plug it in,” says Fanchini, an assistant professor in Western’s Department of Physics and Astronomy. “What if you could charge mobile devices like phones, tablets or laptops on the go? Not only would it be convenient, but the potential energy savings would be significant.”

The Western researchers have already started working with manufacturers of solar components to integrate their findings into existing solar cell technology and are excited about the potential.

“The Canadian business industry already has tremendous know-how in solar manufacturing,” says Fanchini. “Our invention is modular, an add-on to the existing production process, so we anticipate a working prototype very quickly.”

The news release then gives a few technical details,

Making nanoplasmonic enhancements, Fanchini and his team use “gold nanoclusters” as building blocks to create a flexible network of antennae on more traditional solar panels to attract an increase of light. While nanotechnology is the science of creating functional systems at the molecular level, nanoplasmonics investigates the interaction of light with and within these systems.

“Picture an extremely delicate fishnet of gold,” explains Fanchini explains, noting that the antennae are so miniscule they are unseen even with a conventional optical microscope. “The fishnet catches the light emitted by the sun and draws it into the active region of the solar cell.”

According to Fanchini, the spectrum of light reflected by gold is centered on the yellow colour and matches the light spectrum of the sun making it superior for such antennae as it greatly amplifies the amount of sunlight going directly into the device.

“Gold is very robust, resilient to oxidization and not easily damaged, making it the perfect material for long-term use,” says Fanchini. “And gold can also be recycled.”

It has been known for some time that larger gold nanoparticles enhance solar cell performance, but the Western team is getting results with “a ridiculously small amount” – approximately 10,000 times less than previous studies, which is 10,000 times less expensive too.

I hope to hear about a working prototype soon. Meanwhile, here’s a link to and a citation for the paper,

Tessellated gold nanostructures from Au144(SCH2CH2Ph)60 molecular precursors and their use in organic solar cell enhancement by Reg Bauld, Mahdi Hesari, Mark S. Workentin, and Giovanni Fanchini. Nanoscale, 2014,6, 7570-7575 DOI: 10.1039/C4NR01821D
First published online 06 May 2014

This paper is behind a paywall.

One final comment, it seems like a long lead time between publication of the paper and publicity. I wonder if the paper failed to get notice in May 2014, assuming there was a campaign at the time, or if this is considered a more optimal time period for getting noticed.

Canadian nano business news: international subsidiary (Nanex) opens in Québec and NanoStruck’s latest results on recovering silver from mine tailings

The Canadian nano business sector is showing some signs of life. Following on my Sept. 3, 2014 posting about Nanotech Security Corp.’s plans to buy a subsidiary business, Fortress Optical Features, there’s an international subsidiary of Nanex (a Belgium-based business) planning to open in the province of Québec and NanoStruck (an Ontario-based company) has announced the results of its latest tests on cyanide-free recovery techniques.

In the order in which I stumbled across these items, I’m starting with the Nanex news item in a Sept. 3, 2014 posting on the Techvibes blog,

Nanex, a Belgian-based innovator and manufacturer of superhydrophobic nanotechnology products, announced last week the creation of its first international subsidiary.

Nanex Canada will be headquartered in Montreal.

For those unfamiliar with the term superhydrophobic, it means water repellent to a ‘super’ degree. For more information the properties of superhydrophobic coatings, the Techvibes post is hosting a video which demonstrates the coating’s properties (there’s a car which may never need washing again).

An Aug. 1, 2014 Nanex press release, which originated the news item, provides more details,

… Nanex Canada Incorporated will be starting operations on October 1st, 2014 and will be headquartered in Montreal, Quebec.

“Nanex’s expansion into Canada is a tremendous leap forward in our international operations, creating not only more efficient and direct channels into all of North America, but also providing access to a new top-notch intellectual pool for our R&D efforts,” Said Boyd Soussana, National Marketing Director at Nanex Canada. “We feel that Quebec and Canada have a great reputation as leaders in the field of advanced technologies, and we are proud to contribute to this scientific landscape.”

Upon launch, Nanex Canada Inc. will begin with retail and sales of its nanotechnology products, which have a wide range of consumer applications. Formal partnerships in B2B [business-to-business] further expanding these applications have been in place throughout Canada beginning in August of 2014. Through its Quebec laboratories Nanex Canada Inc. will also be pursuing R&D initiatives, in order to further develop safe and effective nano-polymers for consumer use, focusing entirely on ease of application and cost efficiency for the end consumer. In addition application of nano-coatings in green technologies will be a priority for North American R&D efforts.

Nanex Company currently manufactures three lines of products: Always Dry, Clean & Coat, and a self-cleaning coating for automotive bodies. These products contain proprietary nano-polymers that when sprayed upon a surface provide advanced abilities including super hydrophobic (extremely water-repellent), oleophobic (extremely oil repellent), and scratch resistance as well as self-cleaning properties.

 

The second piece of news is featured in a Sept. 5, 2014 news item on Azonano,

NanoStruck Technologies Inc. is pleased to announce positive results from test work carried out on silver mine tailings utilizing proprietary cyanide free recovery technologies that returned up to 87.6% of silver from samples grading 56 grams of silver per metric ton (g/t).

A Sept. 4, 2014 NanoStruck news release, which originated the news item, provides more details,

Three leach tests were conducted using the proprietary mixed acid leach process. Roasting was conducted on the sample for two of the leach tests, producing higher recoveries, although the un-roasted sample still produced a 71% recovery rate.

87.6% silver recoveries resulted from a 4 hour leach time at 95 degrees Celsius, with the standard feed grind size of D80 175 micron of roasted material.
84.3% recoveries resulted from a 4 hour leach at 95 degrees Celsius with the standard feed grind size of D80 175 micron with roasted material at a lower acid concentration.
71% recoveries resulted from a 4 hour leach at 95 degrees Celsius from received material, with the standard feed grind size of D80 175 micron with an altered acid mix concentration.

The average recovery for the roasted samples was 86% across the two leach tests performed using the proprietary process.

Bundeep Singh Rangar, Interim CEO and Chairman of the Board, said: “These results further underpin the effectiveness of our processing technology. With our patented process we are achieving excellent recoveries in not only silver tailings, but also gold tailings as well, both of which have vast global markets for us.”

The proprietary process combines a novel mixed acid leach with a solvent extraction stage, utilizing specific organic compounds. No cyanide is used in this environmentally friendly process. The flow sheet design is for a closed loop, sealed unit in which all chemicals are then recycled.

Previous test work undertaken on other gold mine tailings utilizing the proprietary process resulted in a maximum 96.1% recovery of gold. Previous test work undertaken on other silver tailings resulted in a maximum 86.4% recovery of silver.

The technical information contained in this news release has been verified and approved by Ernie Burga, a qualified person for the purpose of National Instrument 43-101, Standards of Disclosure for Mineral Projects, of the Canadian securities administrators.

Should you choose to read the news release in its entirety, you will find that no one is responsible for the information should anything turn out to be incorrect or just plain wrong but, like Nanotech Security Corp., (as I noted in my Sept. 4, 2014 posting), the company is very hopeful.

I have mentioned NanoStruck several times here:

March 14, 2014 posting

Feb. 19, 2014 posting

Feb. 10, 2014 posting

Dec. 27, 2013 posting

Canada’s ‘nano’satellites to gaze upon luminous stars

The launch (from Yasny, Russia) of two car battery-sized satellites happened on June 18, 2014 at 15:11:11 Eastern Daylight Time according to a June 18, 2014 University of Montreal (Université de Montréal) news release (also on EurekAlert).

Together, the satellites are known as the BRITE-Constellation, standing for BRIght Target Explorer. “BRITE-Constellation will monitor for long stretches of time the brightness and colour variations of most of the brightest stars visible to the eye in the night sky. These stars include some of the most massive and luminous stars in the Galaxy, many of which are precursors to supernova explosions. This project will contribute to unprecedented advances in our understanding of such stars and the life cycles of the current and future generations of stars,” said Professor Moffat [Anthony Moffat, of the University of Montreal and the Centre for Research in Astrophysics of Quebec], who is the scientific mission lead for the Canadian contribution to BRITE and current chair of the international executive science team.

Here’s what the satellites (BRITE-Constellatio) are looking for (from the news release),

Luminous stars dominate the ecology of the Universe. “During their relatively brief lives, massive luminous stars gradually eject enriched gas into the interstellar medium, adding heavy elements critical to the formation of future stars, terrestrial planets and organics. In their spectacular deaths as supernova explosions, massive stars violently inject even more crucial ingredients into the mix. The first generation of massive stars in the history of the Universe may have laid the imprint for all future stellar history,” Moffat explained. “Yet, massive stars – rapidly spinning and with radiation fields whose pressure resists gravity itself – are arguably the least understood, despite being the brightest members of the familiar constellations of the night sky.” Other less-massive stars, including stars similar to our own Sun, also contribute to the ecology of the Universe, but only at the end of their lives, when they brighten by factors of a thousand and shed off their tenuous outer layers.

BRITE-Constellation is both a multinational effort and a Canadian bi-provincial effort,

BRITE-Constellation is in fact a multinational effort that relies on pioneering Canadian space technology and a partnership with Austrian and Polish space researchers – the three countries act as equal partners. Canada’s participation was made possible thanks to an investment of $4.07 million by the Canadian Space Agency. The two new Canadian satellites are joining two Austrian satellites and a Polish satellite already in orbit; the final Polish satellite will be launched in August [2014?].

All six satellites were designed by the University of Toronto Institute for Aerospace Studies – Space Flight Laboratory, who also built the Canadian pair. The satellites were in fact named “BRITE Toronto” and “BRITE Montreal” after the University of Toronto and the University of Montreal, who play a major role in the mission.  “BRITE-Constellation will exploit and enhance recent Canadian advances in precise attitude control that have opened up for space science  the domain of very low cost, miniature spacecraft, allowing a scientific return that otherwise would have had price tags 10 to 100 times higher,” Moffat said. “This will actually be the first network of satellites devoted to a fundamental problem in astrophysics.”

Is it my imagination or is there a lot more Canada/Canadian being included in news releases from the academic community these days? In fact, I made a similar comment in my June 10, 2014 posting about TRIUMF, Canada’s National Laboratory for Particle and Nuclear Physics where I noted we might not need to honk our own horns quite so loudly.

One final comment, ‘nano’satellites have been launched before as per my Aug. 6, 2012 posting,

The nanosatellites referred to in the Aug.2, 2012 news release on EurekALert aren’t strictly speaking nano since they are measured in inches and weigh approximately eight pounds. I guess by comparison with a standard-sized satellite, CINEMA, one of 11 CubeSats, seems nano-sized. From the news release,

Eleven tiny satellites called CubeSats will accompany a spy satellite into Earth orbit on Friday, Aug. 3, inaugurating a new type of inexpensive, modular nanosatellite designed to piggyback aboard other NASA missions. [emphasis mine]

One of the 11 will be CINEMA (CubeSat for Ions, Neutrals, Electrons, & MAgnetic fields), an 8-pound, shoebox-sized package which was built over a period of three years by 45 students from the University of California, Berkeley, Kyung Hee University in Korea, Imperial College London, Inter-American University of Puerto Rico, and University of Puerto Rico, Mayaguez.

This 2012 project had a very different focus from this Austrian-Canadian-Polish effort. From the University of Montreal news release,

The nanosatellites will be able to explore a wide range of astrophysical questions. “The constellation could detect exoplanetary transits around other stars, putting our own planetary system in context, or the pulsations of red giants, which will enable us to test and refine our models regarding the eventual fate of our Sun,” Moffatt explained.

Good luck!

Canada Grand Challenges May 2014 grants

Grand Challenges Canada (mentioned here many times including this Nov. 21, 2013 posting which featured their ‘Stars in Global Health’ programme grants announcement for Fall 2013) has announced a new round of awards. From a May 22, 2014 Grand Challenges Canada news release (can be found on EurekAlert),

Grand Challenges Canada, funded by the Government of Canada, today announces investments of $12 million in projects worldwide, aimed squarely at improving the health and saving the lives of mothers, newborns and children in developing countries.

The news release goes on to describe two different grants,

Four Canadian-based projects (from Guelph, Toronto, Waterloo and Winnipeg) with proven impact and sustainability will share $2.6 million in scale-up grants and loans from Grand Challenges Canada, matched by $2.6 million from private and public partners, bringing total “transition-to-scale” investments to $5.2 million.

In addition, Grand Challenges Canada “Stars in Global Health” [awarded] seed grants of $112,000 each ($6.8 million in total) …

[emphases mine]

I checked here to find Spring 2014 ‘Transition to scale’ grants and ‘Seed’ grants for the Canada Grand Challenges (GCC) programme.

I’m highlighting two of the funded projects. First, there’s ‘Lucky Iron Fish’ which won a ‘transition-scale-grant’ for the University of Guelph, from the news release on EurekAlert,

The little “Lucky Iron Fish,” now in growing use by cooks in Cambodia, has proven effective in reducing rampant iron deficiency among women – the cause of premature labour, hemorrhaging during childbirth and poor brain development among babies. Initial local reluctance to use a loose piece of iron in cooking pots was overcome by a clever design tapping into Cambodian folklore about a fish species that brings good fortune. In partnership with small businesses across Cambodia, plans for this year and next call for production and distribution of 60,000 lucky iron fish, made from recycled material at a cost of about $5 each, which provide health benefits for roughly three years.

(Lucky Iron Fish, Guelph, a transition-to-scale investment, grant #0355, video, images. More information: http://bit.ly/1mIZeWr)

Here’s more detail about the project from the GCC’s list of May 2014 successful GCC grants,

A lucky little fish to fight iron deficiency among women in Cambodia
Lucky Iron Fish, Guelph
Project number: 0355-05-30
Total new transition to scale investment: $860,000

In Cambodia, six in 10 women are anemic due to iron deficiency in their diets, causing premature labour, hemorrhaging during childbirth and the impaired brain development of their babies.

Usually obtained through red meat or other iron-rich foods, a small chunk of iron added to water in the cooking pot can release a life-saving iron supplement.  But attempts to persuaders to do so were unsuccessful.

On a 2008 study mission in Cambodia, University of Guelph researcher Chris Charles thought of creating a piece of iron shaped like a local river fish believed to bring good luck and fortune.

His simple idea succeeded beyond all expectations.  Women happily placed the Lucky Iron Fish in their cooking pots and, in the months that followed, anemia in the village fell dramatically.

A Lucky Iron Fish is small enough to be stirred easily but large enough to provide about 75 per cent of daily iron requirements.

“The results are stunning,” says Dr. Alastair Summerlee, President of the University of Guelph and Chair of the Board of Directors of Lucky Iron Fish. “Initial results show a huge decrease in anemia and the village women say they feel good, experience no dizziness and have fewer headaches. The iron fish is incredibly powerful.”

Small businesses across Cambodia will produce and distribute the fish with quality control measures in place.  About 7.5 cm (3 inches) long, and made from recycled material at a cost of about $5 each, the iron fish provides health benefits for roughly three years.

“Our goal is to produce 10,000 Lucky Iron Fish this year and another 150,000 next year,” says Gavin Armstrong, President and CEO of Lucky Iron Fish.

Taking the project to scale offers profound potential health benefits to many women in Cambodia with potential markets throughout the world.
Grand Challenges Canada’s $500,000 loan to Lucky Iron Fish is part of a total scale-up financing package of $860,000, and augments earlier commitments of equity investors, Innovation Guelph, and the University of Guelph.

The second one is a ‘Rising Star’ project at the University of Alberta. From a May 22, 2014 University of Alberta news release (also on EurekAlert but dated May 23, 2014),

A University of Alberta researcher’s star is rising thanks to her idea to detect deadly pathogens such as E. coli using a paper device only slightly larger than a postage stamp.

Frédérique Deiss, a post-doctoral fellow in the Faculty of Science, is working on ways to help detect food- and water-borne pathogens using a paper-based diagnostic tool that could be used anywhere, including developing countries. The idea earned the electrochemist $112,000 in research funding from Grand Challenges Canada after being selected as one of their Stars in Global Health.

For the next 18 months, Deiss will be working at the U of A and with farmers near Nairobi, Kenya, in collaboration with the International Livestock Research Institute, to develop and test a prototype that provides an affordable method for detecting pathogens such as salmonella or E. coli, which can be present in raw milk, on equipment, or in water or waste water.

“Some areas do not have the infrastructure to do this kind of monitoring all the time. These devices are simple and sensible enough to use that farmers could almost do the tests themselves, and test every day rather than once a week or even more sporadically,” said Deiss, who is working in the lab of Ratmir Derda.

Her idea for a diagnostic tool made of paper is just that at the moment—an idea. Funding from Grand Challenges Canada will allow her to develop an electrochemical diagnostic device made of paper and tape. Conductive ink applied to the paper would create an electrode that would allow researchers to detect the presence of targeted bacteria.

Slightly larger than a postage stamp and even cheaper to make at less than 10 cents, the device would be extremely portable, self-contained and sealed—meaning anyone performing the tests would not risk exposure to potentially harmful bacteria, Deiss said. It would also allow testing of non-purified samples—a time- and cost-saving step not possible in some parts of the world, including farms around Nairobi, she added.

Within six months, Deiss hopes to develop a working prototype capable of detecting non-pathogenic bacteria, and by one year a device able to safely detect deadly pathogens such as E. coli. She also plans to work with ILRI and farmers in Nairobi to test the device in the field, comparing results with conventional methods.

Here’s a video of Deiss describing her idea,

You can find more videos featuring researchers and their GCC projects on GCC’s YouTube channel.

I wish all the best of luck to all the researchers and I’m pretending to myself that the two projects featured here can be described as nanotechnology.

Canadian researchers develop test for exposure to nanoparticles*

The Canadian Broadcasting Corporation’s online news features a May 21, 2014 article by Emily Chung regarding research from the University of Toronto that may enable a simple skin test for determining nanoparticle exposure,

Canadian researchers have developed the first test for exposure to nanoparticles — new chemical technology found in a huge range of consumer products — that could potentially be used on humans.

Warren Chan, a University of Toronto [U of T] chemistry professor, and his team developed the skin test after noticing that some mice changed colour and others became fluorescent (that is, they glowed when light of certain colours were shone on them) after being exposed to increasing levels of different kinds of nanoparticles. The mice were being used in research to develop cancer treatments involving nanoparticles.

There is some evidence that certain types and levels of exposure may be harmful to human health. But until now, it has been hard to link exposure to health effects, partly due to the challenge of measuring exposure.

“There’s no way to determine how much [sic] nanoparticles you’ve been exposed to,” said Chan in an interview with CBCNews.ca.

There was one way to measure nanoparticle exposure in mice —  but it required the animals to be dead. At that point, they would be cut open and tests could be run on organs such as the liver and spleen where nanoparticles accumulate.

A May 14, 2014 article by Nancy Owano on phys.org provides more details (Note: Links have been removed),

They [researchers] found that different nanoparticles are visible through the skin under ambient or UV light. They found that after intravenous injection of fluorescent nanoparticles, they accumulate and can be observed through the skin. They also found that the concentration of these nanoparticles can be directly correlated to the injected dose and their accumulations in other organs.

In their discussion over selecting nanoparticles used in mouse skin, they said, “Gold nanoparticles are commonly used in molecular diagnostics and drug delivery applications. These nanomaterials were selected for our initial studies as they are easily synthesized, have a distinct ruby color and can be quantified by inductively coupled plasma atomic emission spectroscopy (ICP-AES).”

Work involved in the study included designing and performing experiments, pathological analysis, and data analysis. Their discovery could be used to better predict how nanoparticles behave in the body.

Here’s a link to and a citation for the paper,

Nanoparticle exposure in animals can be visualized in the skin and analysed via skin biopsy by Edward A. Sykes, Qin Dai, Kim M. Tsoi, David M. Hwang & Warren C. W. Chan. Nature Communications 5, Article number: 3796 doi:10.1038/ncomms4796 Published 13 May 2014

This paper is behind a paywall.

* Posting’s head changed from ‘Canadians and exposure to nanoparticles; to the more descriptive ‘Canadian researchers develop test for exposure to nanoparticles’., May 27, 2014.

Ontario’s special science research, writing, and presentation programme (Online Research Co-op Pilot Program) for high schoolers

A group of teenagers in Thunder Bay , Ontario participating in a pilot programme where they were mentored online by Canadian government federal scientists were profiled in a May 9, 2104 news item published by The Chronicle Journal; the newspaper of the northwest (Ontario),

Three Churchill high school students have completed a bold journey in science.

The science co-op students were each teamed up with a federal scientist in a year-long pilot project that ended this week when the students presented their research paper to a panel of experts.

Shane Wong, 17, worked on nanotechnology, materials at the size of molecules and atoms. “I think I was watching an episode of Daily Planet actually, and they mentioned nanotechnology, and I thought that was really cool,’’ Wong recalled. “When they offered this program at the school, nanotechnology was one of them.”

Wesley Willick, 16, looked at a space-based automatic identification system. “It is basically a bunch of ships at sea . . . communicating with each other, (sharing) data such as speed and where they are heading and what they are carrying . . . relaying that information up to a satellite and back down to a mainland station which can organize the data and make sure none of the ships collide,” explained Willick.

“I originally signed up for military technology and I got paired with somebody who works at the Maritime Defence Institute in Halifax,’’ Willick said. “He gave me several different options . . . and thought this was the best to do because it had more papers written on it.”

Robin Little, 17, wrote on phage therapy, a bacteria used to attack specific bacteria and which can be genetically modified, he said. “This is going to be used as an alternative medication as opposed to antibiotics, as antibiotics are extremely dangerous and poisonous,” said Little. …

Simrun Chabal, an International Baccalaureate student, also participated in the science co-op, but was unavailable to do his presentation due to other commitments.

Churchill was one of six Ontario schools involved in the pilot project.

The full title for the project is this: Ontario On-Line Research Co-op for high school students. There’s this from the project homepage,

This course has been collaboratively developed by the Canadian Young Scientist Journal and the federal Science and Technology Cluster (Science.gc.ca).

The Online Research Co-op Pilot Program has been developed to help students transition from secondary school to postsecondary education. The program matches highly motivated high school students, in grades 11 and 12, with top researchers in the fields of science and technology. Students are offered opportunities to work on research projects, interact with like-minded peers, and gain early exposure to careers in science and technology. The online format of the course makes it accessible to students across Ontario.

The program has been piloted in four schools across the province:

Earl Haig Secondary School
École secondaire publique De la Salle
Sir Winston Churchill Collegiate & Vocational Institute
St. Martin Secondary School

Additional Ontario high schools can now apply to offer this opportunity for their students. Their letters of intent should be coordinated with the program liaison ([email protected]) and submitted to the Canadian Young Scientist Journal.

The pilot program will be the topic of a workshop at the Ontario Cooperative Education Association Spring Conference (April 27 – 29, 2014) and at the Ontario Association of Physics Teachers Conference (May 24, 2014).The best On-Line Research Co-op projects will be:

profiled in the Canadian Young Scientist Journal and distributed to every high school in Ontario;
presented at the Ontario Annual Science and Innovation conference to the attention of the national academic community;
showcased on Science.gc.ca together with a Young Scientist Blog allowing students to share their experience and ideas with each other and with the general public.

Step-by-step pilot project description:

1. Choosing students

A selection process takes place at the participating high schools to choose the students who will take part in the online co-op. Students develop their cover letters and a description of science projects they would like to pursue. The co-op liaison passes the names of the successful students along with their cover letters, research requests and alternatives to the Science.gc.ca team to engage scientists interested in mentoring.

2. Finding the mentors

The Science.gc.ca team matches projects with scientists who expressed interest in mentoring and helping to develop the next generation of scientists. If no exact match is found for a particular project, the Science.gc.ca team will approach potential mentors in a similar field of study. After reviewing materials from students, the scientists agree to mentor a particular student.

3. The interview

The liaison arranges a Skype or telephone “interview” between the student, the mentor and the local co-op teacher. During the interview, the mentor and student will discuss the project and the expectations while making any mutually acceptable modifications.

4. Setting up collaboration

The Science.gc.ca team creates a separate online SharePoint site for each student and a mentoring scientist. The collaboration space allows for an easy exchange of ideas, information, assigning research topics, and reviewing work submitted over the period of one semester. The information on the roles and responsibilities of the student and the mentor are integrated into the site. As this is a pilot project, participants, teachers and mentors also have access to a forum for sharing successes, tips, and lessons learned with other teams.

5. Using collaboration spaces

Based on the interview, the mentor adapts the project expectations and deliverables and uploads them to the SharePoint site. The mentor also provides a list of resources that the student can use as well as tasks to be accomplished. The student and the mentor regularly communicate online and the student posts timely progress updates and uploads results of completed tasks. The mentor approves the student’s weekly timesheets and completes the mid-course and final evaluation forms online.

6. Measuring ongoing progress

Each collaboration site includes tools supporting ongoing interactions and measurement of student’s progress. The mentor and the co-op teacher have an opportunity to be involved as little or as much as necessary based on the course progress indicators; the mentor can decide when the student needs assistance or guidance. The student and the mentor meet half way through the course via Skype or telephone to discuss progress and if necessary modify the expectations for the deliverables and the final report. By the end of the course the student submits results in a form of project report, case study or research topic review.

7. Celebrating results

The Online Research Co-op Pilot Program supports students’ transition from high school into postsecondary institutes with a focus on 21st century career development. We will celebrate the best projects in the following ways:

Featuring them in the Canadian Young Scientist Journal distributed to every high school in Ontario;
Presenting the projects at the Ontario Annual Science and Innovation conference to the attention of the national academic community;
Creating a showcase on Science.gc.ca together with a Young Scientist Blog allowing students to share their experience and ideas.

All of the participating mentors will be recognised in a special section of Science.gc.ca for their contribution to the development of the next generation of Canadian scientists and researchers.

There’s also a plea for mentors on the project homepage,

This program allows participating scientists to mentor and shape the next generation of Canadian scientists through direct on-line contact. During a 4 month semester, students are expected to work for about 90 hours. Mentoring scientists are expected to contribute about 10 hours of their time over the same period. Early exposure to research can have a large impact on the career direction of these students. Recently, through the Canadian Young Scientist Journal, high school students demonstrated their ability to invent New Bio-science technologies, Non-voice over IP communication and more. However, these students require mentors to guide their intellectual curiosity.

Mentors have the opportunity to review the cover letter of students before accepting them as mentees. During an initial online meeting, the student and the mentor will discuss expectations and guidelines for the project. There will be generic assignments available for students (e.g., Writing a Scientific Paper, Critiquing a Scientific Paper, Report on Scientific Literature, Scientific Literature Review and Analysis), but the specifics of the project will be mutually agreed upon by both the student and mentor. An online SharePoint site will be a means for the students and mentors to share ideas, documents, and information. The mentor may be involved as little or as much as necessary in the student’s project, based on the course progress indicators. Mentorship duties may be partially designated to a graduate student in the mentor’s lab; however, all projects should provide students with the opportunity to gain knowledge and skills in science and technology research.

I’m glad to see this project and hope it is quite successful and spreads across the country in all directions.

One final comment, I am not familiar with the Canadian Young Scientist Journal (CYSJ) and after a bit of online digging, I found this description in its Wikipedia entry (Note: links have been removed),

The Canadian Young Scientist Journal (fr. Revue Canadienne des Jeunes Scientifiques) is a non-profit peer-reviewed publication covering highlight student-driven research and innovative work. It was established in May 2008 by its current editor-in-chief, Alexandre Noukhovitch[1] and is published by NRC Research Press. [emphasis mine] It provides secondary school students with an opportunity to publish the results of their research.[2] The journal is based in Toronto and is published twice per year. It works in close association with Youth Science Canada.[3] The journal includes project reports, case studies, and science book reviews authored by high school students.[4] To benefit science education and to support classroom activities, the journal publishes expert reviews along with students’ papers.

The journal was published by the Canadian federal government’s National Research Press which exists now as a brand for Canadian Science Publishing (CSP), a not-for-profit publishing group formed after the government severed it from Canada’s National Research Council. Oddly, there’s no mention of any publisher, CSP or otherwise, in the About the Journal page or elsewhere on the journal’s website but the Ads and sponsorships page does mention CSP in the Motivator category.

It’s always interesting trying to trace the network of relationships between government and non-government agencies especially since the Canadian federal government has created a number of not-for-profit agencies.I’m not trying to suggest sinister but it does get confusing when the agencies don’t think to include histories and explanations.

In the interest of clarifying things, I was involved in a project (Science Borealis; a Canadian science blog aggregator/hub/community) which was, and I think continues to to be, supported by CSP.

Glass is a challenge to measure but scientists at Canada’s University of Waterloo have figured out how

Glass, as many folks know, has a dual nature, being simultaneously both liquid and solid, making truly accurate measurement a bit of a challenge.  A March 3, 2014 news item on Azonano notes that scientists at Canada’s Waterloo University have solved the surface measurement problems with glass,

University of Waterloo physicists have succeeded in measuring how the surfaces of glassy materials flow like a liquid, even when they should be solid.

Understanding the mobility of glassy surfaces has implications for the design and manufacture of thin-film coatings and also sets practical limits on how small we can make nanoscale devices and circuitry.

The work is the culmination of a project carried out by a research team led by Professor James Forrest and doctoral student Yu Chai from the University of Waterloo as well as researchers from École Superieure de Physique et de Chimie Industrielles in France and McMaster University [Canada].

A Feb. 28  2014 University of Waterloo news release (also on EurekAlert) by Katharine Tuerke, which originated the news item, describes the research in further detail,

“Common sense would tell you that if a material is solid, it’s solid everywhere. But we’ve shown that a solid isn’t a solid everywhere,” says James Forrest, a professor in Waterloo’s Department of Physics and Astronomy.  “It’s almost solid everywhere –  except a few nanometers at the surface.”

A series of simple and elegant experiments were the solution to a problem that has been plaguing condensed matter physicists for the past 20 years. The experiments revealed that at a certain temperature range, solid glassy materials actually have a very thin liquid-like layer at the surface.

Glass is much more than the material in bottles and windows. In fact, any solid without an ordered, crystalline structure is considered a glassy material, so metals, small molecules, and polymers can all be made into glassy materials.

Polymers, the building block of all plastics, are almost always glassy rather than crystalline. These materials undergo a transition between a brittle solid and a molten liquid in a narrow temperature range, which encompasses the so-called glass transition temperature.

In a series of experiments, Forrest and colleagues started with very thin slices of polystyrene stacked to create tiny staircase-like steps about 100-nanometres high – less than 0.001 per cent the thickness of a human hair. They then measured these steps as they became shorter, wider and less defined over time.

The simple 2-dimensional profile of this surface step allowed the physicists to numerically model the changes to the surface’s geometry above and below the glass transition temperature.

Results show that above the transition temperature, polystyrene flows entirely like a liquid; but below this temperature the polymer becomes a solid with a thin liquid-like layer at the surface.

Forrest is also a University Research Chair, a member of the Waterloo Institute for Nanotechnology and an associate faculty member at the Perimeter Institute.

The project team also includes Kari Dalnoki-Veress and J.D. McGraw from McMaster University and Thomas Salez, Michael Benzaquen and Elie Raphael of the École Superieure de Physique et de Chimie Industrielles in Paris.

The researchers have provided a 21 second animation to illustrate their work,

Here’s a link to and a citation for the research paper,

A Direct Quantitative Measure of Surface Mobility in a Glassy Polymer by Y. Chai, T. Salez, J. D. McGraw, M. Benzaquen, K. Dalnoki-Veress, E. Raphaël, & J. A. Forrest. Science 28 February 2014: Vol. 343 no. 6174 pp. 994-999 DOI: 10.1126/science.1244845

This paper is behind a paywall.

Integran’s 2013 SERDP Award and its hockey sticks

Integran, a company based in Mississauga (sometimes identified as Toronto), Ontario, has received an award for its nanostructured alloy, a replacement for poisonous copper-beryllium, according to a Feb. 13, 2014 news item on Azonano,

Toronto-based Integran Technologies Inc. (Integran) today announced that it has received the 2013 SERDP (Strategic Environmental Research and Defense Program) Project-of-the-Year Award for Weapons Systems and Platforms for the development of a nanostructured alloy for copper-beryllium replacement.

For decades, essential parts in fixed and rotary wing military platforms have been made with copper-beryllium alloys. Beryllium is particularly useful for this purpose because it is both lightweight and strong, a rare combination not found in most other metals. The problem is beryllium is a toxic material that can be harmful to workers who handle it during assembly and repair. Working with beryllium, which requires donning protective gear and taking extensive precautions, is costly and time-consuming.

The Feb. 12, 2014 Integran news release found on MarketWire but oddly not on the company’s website at this time (Feb. 13, 2014) and which originated the news item, describes the process in general terms,

With support from US DoD’s SERDP program and Industry Canada’s Strategic Aerospace and Defense Initiative (SADI) program, Integran developed and validated an electroforming process that produces a nanostructured alloy that matches the desirable properties of copper-beryllium, particularly for use as high load bushings. This pulsed electroplating process goes beyond merely coating a metal object. Rather, near-net-shape components are created that require little to no machining to achieve final dimensions, resulting in very little material waste. The work also showed this innovative process can be used successfully for large metal sheets and high conductivity wires, both of which are used in multiple military applications.

Integran’s Aerospace and Defense R&D Unit Manager Brandon Bouwhuis states, “The validation testing performed in this project demonstrates that these nanostructured alloys can meet or exceed the performance of copper beryllium in many applications, and could result in substantial cost savings for the US DoD and Canadian Military through the decreased use of toxic substances.”

There is no mention in this news release as to whether Integran’s replacement alloy might itself be poisonous or toxic in some form.

I checked the Integran website and found that it lists one product, Nanovate. I was not able to find any information about environmental testing but there is this on the company’s  Why Nanovate™? webpage (Note: Links have been removed),

Integran is a world leader in development and manufacturing of revolutionary electrodeposited (plated) nanocrystalline “Nanovate™” metals. Our nanotechnology enabled metals take advantage of the fine crystalline grain structure to achieve superior performance at reduced weight vs conventional material solutions. Our technology platform consists primarily of Nickel, Iron, Cobalt and Copper alloys that we use to create high performance parts that are:

  • Lighter, stronger, harder and cheaper than Aluminum
  • Corrosion and wear resistant
  • Shielded against low frequency magnetic interference
  • Efficiently absorb energy and noise

In addition to manufacturing products, we also provide services such as:

  • Plating on plastics, including polymers like polyamides (Nylon), PEEK and ABS

I have previously posted about Integran and its alloy many times including this April 16, 2012 posting referencing a Canadian government investment in the company’s technology.

As I was browsing the Integran website I found this on the company’s homepage,

[downloaded from http://www.integran.com/default.aspx]

[downloaded from http://www.integran.com/default.aspx]

The quintessential Canadian enterpreneur’s dream, creating an ‘unbreakable’ hockey stick that never gets ‘tired’. According to a Nov. 7, 2013 posting on the Integran News Blog, the hockey stick was a Kickstarter project,

Congratulations to our partners, Colt Hockey, for meeting and exceeding their goal on Kickstarter to develop a higher performance and more durable composite hockey stick with PowerMetal Technologies.  The project exceeded expectations with over $100,000 raised from almost 500 supporters.

This news item seemed particularly à propos during the 2014 Olympics. Good luck to the Canadian women’s and men’s teams!

96% of 9.1 grams per metric ton, or 0.32 ounces per ton, of gold recovered in gold tailings tests

I’ve written about Canadian company NanoStruck before (Dec. 27, 2013 posting) where I noted there wasn’t much information about their technology. If a Feb. 10, 2014 news item on Azonano is any measure, It seems Nanostruck is preparing to provide more technical information,

NanoStruck Technologies Inc. announces testing of its mine tailings treatment techniques and preliminary results showing recovery rates of gold from mine tailings to be much higher than expected by industry observers.

NanoStruck’s techniques involve nanotechnology and industrial collaboration for specific innovative milling, pryometallurgy and hydrometallurgy processes combined with proprietary organic compounds.

Tests completed over the past three months indicate that the Nanostruck techniques can recover as much as 96% of 9.1 grams per metric ton, or 0.32 ounces per ton, of gold contained in representative gold tailings samples.

I believe the technology mentioned in the news release is NanoStruck’s NanoMet solution (from my Dec. 27, 2013 posting),

Additionally, the Company’s technology can be used to recover precious and base metals from mine tailings, which are the residual material from earlier mining activities. By retrieving valuable metals from old tailing dumps, the Company’s NanoMet solutions boosts the value of existing mining assets and reduces the need for new, costly and potentially environmentally harmful exploration and mining. [emphasis mine]

The Feb. 7, 2014 NanoStruck news release, which originated the Azonano news item, notes,

The testing involved careful roasting of tailings in laboratories. When the Nanostruck techniques were applied to tailings that had been previously roasted at the source site, the recovery rate was 88%, multi-fold higher than previous attempts by other companies using alternative technologies such as cyanide leaching. From the same already roasted sample, for example, conventional Carbon In Leach (CIL) processes had resulted in less than 10 percent recovery of gold. The volume of tailings at the source site, which is owned by an unrelated third party, is estimated to be between 450,000 tons and 500,000 tons. NanoStruck is in discussions with the owners of the source site regarding potential contracts for processing the mine tailings at the source site.

The head assays and sampling were done by SGS SA and optical microscopic study performed by Petrolab Ltd to verify the representativeness of the tailing samples as well as percentage of precious metal contained in them. Recovery rates and processes used were also monitored and verified by certified third party experts and laboratory testing, including electron microscope analysis.

The value of precious metals left in mine tailings in 2012 alone by mining companies such as Anglo American Plc (LON: AAL), Barrick Gold Corp. (TSX: ABX, NYSE: ABX), Goldcorp Inc. (TSX: G, NYSE: GG) and Rio Tinto Group (ASX: RIO), was estimated to be US$20 billion at current market prices. Of that, gold represented more than 80% of the value with approximately 360 tons of gold left behind in tailings due to their micronic size, complex minerology as well as political and environmental concerns related to cyanide leaching.

NanoStruck’s environmentally conscious approach did not involve the use of cyanide leaching. All chemicals and organic substances used were recycled and reused.

More details on the refractory gold tailing samples and specifics of the results will be published in the weeks ahead along with highlights from an environmental impact study as well as a volumetrics and grade survey.

Bundeep Singh Rangar, interim CEO and Chairman of the Board said: “We are very excited to announce these tremendously high recovery rates, involving non-cyanide hydrometallurgy and nanotechnology based processes, that could be transformative for the mining industry.”

Brian Mok, Senior Mining Consultant at BG Partners Corp. said: “High value refractory ore and tailings would be very well suited for this process as well as jurisdictions where the use of toxic materials such as cyanide is undesirable or unacceptable.” [emphasis mine]

It’s good to see more detailed information about the company’s technologies and I look forward to learning more as the company releases more details. For example, NanoStruck has retained a mining consultant, Brian Mok, according to a Jan. 31, 2014 NanoStruck news release,

NanoStruck Technologies Inc. (the “Company” or “NanoStruck”) (CSE:NSK) (OTCQX:NSKTF) (Frankfurt:8NSK) announces the appointment of Mr. Brian Mok as Senior Mining Analyst as a Consultant-In-Residence.

Mr. Mok has been involved with the mining industry for the past 17 years. He is a Senior Mining Analyst at BG Partners Corp., a Canadian-based resource investment group that finances and invests in a portfolio of companies, from where he has been seconded to NanoStruck to help build the Company’s NanoMet solutions that recover precious metals from mine tailings.

Mr. Mok was previously Senior Mining Analyst, Capital Markets Group for Union Securities Ltd.; his focus was on micro and small cap names in Precious Metals, Base Metals and Bulk Commodities.

His previous roles also include Research Associate, Metals & Mining, and Gold for Scotia Capital Inc. Prior to his career in capital markets, Mr. Mok has previously served as a project engineer and a sales engineer in Canada, the USA and Europe. Mr. Mok is a Professional Engineer and a Member of the Association of Professional Engineers of Ontario.

Bundeep Singh Rangar, Chairman of the Board, said: “We are pleased to have Mr. Mok assist us in building the NanoMet proposition, where his understanding of both our technology and the market’s commercial drivers are a real asset for our Company.”

If Mok has been seconded to work with NanoStruck, does that mean that BG Partners owns or is in some way related to NanoStruck?

About the Company

NanoStruck Technologies Inc.is a Canadian Company with a suite of technologies that remove molecular sized particles using patented absorptive organic polymers. These versatile biomaterials are derived from crustacean shells or plant fibers, depending on requirements of their usage. Acting as molecular sponges, the nanometer-sized polymers are custom programmed to absorb specific particles for remediation or retrieval purposes. These could be used to clean out acids, hydrocarbons, pathogens, oils and toxins in water via its NanoPure solutions. Or to recover precious metal particles in mine tailings, such as gold, silver, platinum, palladium and rhodium using the Company’s NanoMet solutions.

By using patented modifications to conventional technologies and adding polymer-based nano-filtration, the Company’s offers environmentally safe NanoPure solutions for water purification. The Company uses Environmental Protection Agency (EPA) and World Health Organization (WHO) guidelines as a benchmark for water quality and safety to conform to acceptable agricultural or drinking water standards in jurisdictions where the technology is used.

Additionally, the Company’s technology can be used to recover precious and base metals from mine tailings, which are the residual material from earlier mining activities. By retrieving valuable metals from old tailing dumps, the Company’s NanoMet solutions boosts the value of existing mining assets and reduces the need for new, costly and potentially environmentally harmful exploration and mining.

The Company’s current business model is based on either selling water remediation plants or leasing out units and charging customers on a price per liter basis with a negotiated minimum payment per annum. For processing mine tailings, the value of precious metal recovered is shared with tailing site owners on a pre-agreed basis.