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Archive for the ‘sustainability’ category: Page 514

Feb 13, 2019

New Artificial Leaf Design Could Absorb Far More CO2

Posted by in category: sustainability

Placing the leaves in a bubble could dramatically improve efficiency.

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Feb 13, 2019

Graphene-Based Cement/Concrete Admixture for Ultra-Strong, High-Strength and Sustainable Housing/Infrastructure

Posted by in categories: habitats, sustainability

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Feb 13, 2019

Europe’s next €1-billion science projects: six teams make it to final round

Posted by in categories: biotech/medical, robotics/AI, science, solar power, sustainability

The six newly shortlisted initiatives include: a project that would explore how AI can enhance human capabilities; one to hasten clinical availability of cell and gene therapies; a personalized-medicine initiative; two projects that aim to make solar energy more efficient; and a humanities project called the Time Machine, which seeks to develop methods for enabling digital search of historical records in European cities.


AI enhancement and a virtual time machine are included in the shortlist of pitches.

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Feb 12, 2019

Climate of North American cities will shift hundreds of miles in one generation

Posted by in categories: climatology, sustainability

In one generation, the climate experienced in many North American cities is projected to change to that of locations hundreds of miles away—or to a new climate unlike any found in North America today.

A new study and interactive web application aim to help the public understand how will impact the lives of people who live in urban areas of the United States and Canada. These new climate analyses match the expected future climate in each city with the current climate of another location, providing a relatable picture of what is likely in store.

“Under current high emissions the average urban dweller is going to have to drive more than 500 miles to the south to find a climate like that expected in their home city by 2080,” said study author Matt Fitzpatrick of the University of Maryland Center for Environmental Science. “Not only is climate changing, but climates that don’t presently exist in North America will be prevalent in a lot of urban areas.”

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Feb 10, 2019

This tower is a massive battery and it’s fuelled by gravity

Posted by in categories: energy, sustainability

This tower is a massive battery — and it could help solve one of renewable energy’s biggest challenges.

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Feb 9, 2019

Producing biofuels from algae

Posted by in categories: security, sustainability

Microalgae are showing huge potential as a sustainable source of biofuels.

Producing biofuels from renewable sources.

Due to concerns about peak oil, energy security, fuel diversity and sustainability, there is great interest around the world in renewable sources of biofuels.

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Feb 7, 2019

A very small number of crops are dominating globally. That’s bad news for sustainable agriculture

Posted by in categories: food, sustainability

A new U of T study suggests that globally we’re growing more of the same kinds of crops, and this presents major challenges for agricultural sustainability on a global scale.

The study, done by an international team of researchers led by U of T assistant professor Adam Martin, used data from the U.N.’s Food and Agricultural Organization (FAO) to look at which crops were grown where on large-scale industrial farmlands from 1961 to 2014.

They found that within regions crop diversity has actually increased — in North America for example, 93 different crops are now grown compared to 80 back in the 1960s. The problem, Martin says, is that on a global scale we’re now seeing more of the same kinds of crops being grown on much larger scales.

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Feb 6, 2019

Quantum dot white LEDs achieve record efficiency

Posted by in categories: nanotechnology, particle physics, quantum physics, sustainability

Circa 2018


Researchers have demonstrated nanomaterial-based white-light-emitting diodes (LEDs) that exhibit a record luminous efficiency of 105 lumens per watt. Luminous efficiency is a measure of how well a light source uses power to generate light. With further development, the new LEDs could reach efficiencies over 200 lumens per watt, making them a promising energy-efficient lighting source for homes, offices and televisions.

“Efficient LEDs have strong potential for saving energy and protecting the environment,” said research leader Sedat Nizamoglu, Koç University, Turkey. “Replacing conventional lighting sources with LEDs with an of 200 lumens per watt would decrease the global electricity consumed for lighting by more than half. That reduction is equal to the electricity created by 230 typical 500-megawatt coal plants and would reduce greenhouse gas emissions by 200 million tons.”

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Feb 6, 2019

Graphene quantum dots sensitized C-ZnO nanotaper photoanodes for solar cells application

Posted by in categories: quantum physics, solar power, sustainability

In a paper to be published in the forthcoming issue in NANO, researchers from the National Institute of Technology, India, have synthesized blue-green-orange photoemissive sulfur and nitrogen co-doped graphene quantum dots (SNGQDs) using hydrothermal method. These GQDs showed strong UV-visible photoabsorption and excitation dependent photoemission which have low-cost, eco-friendly solar cell application.

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Feb 6, 2019

Brewing nanotechnology from tea

Posted by in categories: biotech/medical, nanotechnology, quantum physics, solar power, sustainability

Quantum dots, which have potential uses in medical imaging and solar cells, could be made with help from the polyphenols found in tea leaves.

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