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JUN 21

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Sulfur Makes Safer, More Efficient Batteries
Written by Philip Proefrock on 21/06/13   

Sulfur continues to offer promise in the energy storage realm. Low- cost lithium sulfur batteries were just a research topic a few years ago, and are now moving closer to viagra 24 hour delivery uk practicality with new developments that could offer four times the energy storage of lithium-ion batteries.

Researchers at Oak Ridge National Laboratory have developed a technique that uses a solid electrolyte to produce a stable, low-cost, sulfur-based battery. "The new ionically-conductive cathode enabled the ORNL battery to maintain a capacity of 1200 milliamp-hours (mAh) per gram after 300 charge-discharge cycles at 60 degrees Celsius. For comparison, a traditional lithium-ion battery cathode has an average capacity between 140-170 mAh/g. Because lithium-sulfur batteries deliver about half the voltage of lithium-ion versions, this eight-fold increase in capacity demonstrated in the ORNL battery cathode translates into four times the gravimetric energy density of lithium-ion technologies."

Sulfur is a plentiful element, and is often a waste product of industrial processes, making it very cheap and viagra generic australia readily available. Sulfur based batteries are also said to be less prone to instability and accidental fire than present lithium ion batteries are in part because the follow link buy levitra online australia electrolytes are solid rather than liquid.

Sulfur has been part of wow look it levitra uk large-scale sodium sulfur batteries for many years, but that technology requires high temperatures, and is best suited for industrial applications. The new developments offer the possibility of bringing sulfur-based batteries to consumer level applications.

image: sulphur and calcite CC BY-SA 3.0 by Didier Descouens/Wikimedia Commons

via: Treehugger (HT: Megan Treacy)

 

JUN 20

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"This is such a great idea, and is good to read about. Utilising desert..."

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​Multi-Technology Synergy to Grow Food in the Desert
Written by Philip Proefrock on 20/06/13   

A project in Qatar is putting together a number of different systems in a complex project intended to "produce food, fresh water and clean energy in deserts using seawater." The Sahara Forest Project uses a number of different systems where the waste by-products from one process are used as feedstock for another. It began by focusing on what was readily abundant: seawater, sun, and desert sand, and looking to what was needed: food, energy, and clean water.

"The seawater, pumped from the nearby Persian Gulf, is the system’s lifeblood. It’s used to cool and humidify the greenhouses. It’s also used to grow algae to produce biofuel, with the leftovers from that process going to make animal feed. Some of it is transformed into fresh water by a solar-powered desalination unit. Some of it may even be used down the viagra from canada road to raise fish or shrimp."

The project greenhouse is fed with CO2 from a nearby fertilizer plant, which helps reduce the atmospheric emissions from the manufacturing process as well as providing an environment in which the plants thrive. Seawater is also pumped into the buy levitra from canada greenhouse to provide evaporative cooling and higher humidity.

"The project’s designers say the concept should work in any low-altitude desert area near a large source of salt water." Addressing the many needs found in these regions of the world makes this an especially compelling project.

The greatest hindrance to this project is its high cost, though the buy canada in propecia prototype is being funded by Qatar. In the long term, the lessons from this pilot project may be able to be deployed in the many areas around the world where inhospitable deserts can be brought to life.

An audio story about the project along with further images at TheWorld.org provides further information about this complex, intriguing experiment.

image: screen capture from TheWorld.org

via: The World (PRI)

 
Former EPA Chief to Lead Apple's Environmental Policy
Written by Philip Proefrock on 19/06/13   

Apple has recently hired former EPA chief Lisa Jackson to be its new Vice President for Environmental Initiatives. While the company has had a strong environmental record, Apple has been criticized in recent years for some of its practices, including producing and briefly leaving EPEAT.

Greenpeace sees the good in Jackson's hiring, calling her, "a proven advocate with a track record of http://www.asian-americans.com/cheap-fast-viagra combating toxic waste and the dirty energy that causes global warming..."

The question is whether Jackson is coming on board to continue to push things forward in groundbreaking new ways, or whether her administrative background will have her instead leading an effort of well-spun greenwashing. Her political background might seem to suggest the latter, although her career at EPA included steps to regulate greenhouse emissions. We hope her tenure at Apple is that of a true ecogeek, and that Apple continues to improve its environmental record.

 

JUN 18

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Tesla Repays Department of Energy Loan
Written by Sarah Rich on 18/06/13   

While Project Better Place has met its end, the EV company Tesla Motors is gaining momentum. The company, which is gearing up to have its Model X join the online cialis sales Model S on the market in 2014, recently made a triumphant announcement: it has repaid its Department of Energy loan in full.

Tesla finally made a profit during the first quarter of 2013, $11.2 million from $561.8 million in revenue. But it was the nearly $1 billion raised in a stock and cialis how much note sale, not profits, that the company used to pay this federal debt nine years early. The outstanding balance of Tesla’s 2009 Advanced Technology Vehicle Manufacturing (ATVM) loan was $451.8 million, profiting US taxpayers just a bit with roughly $12 million in interest. This massive final payment on Tesla's startup loan makes it the first motor vehicle company to pay back its loan from the ATVM loan program.

via: The Atlantic Wire

 

JUN 17

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Wearable Combined Power Generation and Storage
Written by Philip Proefrock on 17/06/13   

Most of the new power technology we learn about these days falls on one side or the other of http://www.asian-americans.com/lowest-price-levitra the power-generation/power-storage divide. But a power cell developed by researcher Zhong Lin Wang at Georgia Tech both produces and stores power in the same tiny unit.

The self-charging cell uses a "piezoelectric membrane that drives lithium ions from one side of the cell to the other when the membrane is deformed by mechanical stress. The lithium ions driven through the polarized membrane by the piezoelectric potential are directly stored as chemical energy using an electrochemical process."

According to the researchers, the direct transfer of physical energy (such as a shoe hitting pavement) to chemical energy is as much as five times as efficient as separate generation and storage systems.

The self-charging power cell is only a device the size of a coin, and only provides enough power to operate a small calculator. But the potential for use in wearable computing (as well as the everpresent "military applications," given DARPA sponsorship of the research) make this technology an interesting one to watch for further development.

images: Gary Meek/GT Research News

 

JUN 14

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New Design for Efficient Concentrating Solar Power
Written by Sarah Rich on 14/06/13   

Scaling up solar energy collection means addressing a critical problem. While additions like anti-reflective coatings can boost efficiency on solar panels, the more solar energy a collector gathers, the hotter it gets--and if temperatures rise too high the http://televideocom.com/levitra-100mg heat could damage the device.

A group at IBM Research - Zurich is addressing this problem and announced on Earth Day 2013 that they are developing a High Concentration PhotoVoltaic Thermal (HCPVT) system. IBM says the collector will be able to generate significantly more electrical power from the sun’s rays than comparable systems while staying cool enough to function.

According to IBM, the proposed HCPVT system’s dish contains hundreds of photovoltaic chips, and the rate at which it can generate electrical power is about 25kW. With the help of a microchannel water cooling system, the system is capable of overnight saturday delivery tramadol concentrating the power of 2,000 suns, on average, and converting 80 percent of the radiation collected.

In a video, a research scientist at Zurich explains the solar radiation concentration methods that will be used in the proposed system.

The design offers other efficiency boosts: the hot water produced in the microchannels can be used for air conditioning or filtered for drinking. More electrical power and a useful hot water byproduct aren’t the only boons; as with many systems designed to increase efficiency, it promises to be more cost effective as well. Although IBM’s press release on the proposed system doesn’t mention any market plans, it does claim that the design is suitable for mass production. If they do go beyond prototype stages, IBM states these systems could be built at a cost three times lower than comparable systems, and may help deliver electricity, fresh water, and cool air to remote locations.

via: Engadget

screencaptured image via IBM Social Media

 

JUN 03

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First US Floating Turbine Launched
Written by Philip Proefrock on 03/06/13   

The first grid-connected floating wind turbine has been launched off the coast of Maine, moving the cialis sample US forward in its deployment of offshore wind power. Offshore wind has been well developed, particularly in Europe. But, despite having extensive wind resources, the US has done very little until now in the way of establishing offshore wind power.

The VolturnUS turbine is actually only a 1:8 scale development model from the University of Maine Advanced Structures and follow link best prices on viagra Composites Center. Nonetheless, the structure is a 65 foot (19.8 meters) tall, and produces enough power that it can be tied to the grid.

This turbine will serve primarily for design study and data collection. According to the Department of Energy, the VolturUS "will collect data to validate and improve floating wind turbine designs, while helping to address technical barriers to greater offshore wind cost reductions."

 

MAY 30

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SciShow: A History of buy kamagra Earth's Climate
Written by Philip Proefrock on 30/05/13   

Is variability in the Earth's climate something new or has the climate always been changing? And, is it something that we should be concerned about?

In this week's Sci Show, Hank goes through a history of Earth's climate and finds a variety of factors that have influenced climate over time.

"Temperatures are increasing faster than they ever have. In the past 100 years, temperatures have risen so dramatically that thay have cancelled out all of the cooling that took place over the past 6,000 years."

 

MAY 29

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A Small Wind Turbine You Can Make Yourself
Written by Sarah Rich on 29/05/13   

As the June 17 deadline to the Instructables Green Design Contest fast approaches, Jaymi Heimbuch at TreeHugger has highlighted one particular entry: a small DIY wind power generator that can sit in your backyard.

The wind generator’s designer, out-of-the-box, offers demo videos and text instructions accompanied by photos. As the designer notes, the amount of electricity the generator can produce depends on the steper motor you choose to use when constructing it yourself. The one shown in the instructions tops out at 8 volts, but on a still day outputs around 4. Modifying the turbine to increase efficiency, out-of-the-box is posting updates after the last step in the instructions, like removing a cup off of each arm to reduce wind resistance and adding unobtrusive solar panels.

This contest’s accessibility stands out among some other green design competitions. It doesn’t involve prototypes that use obscure materials or require years of experience in aerospace engineering. Instead, each entry must provide step by step instructions to show others how to make the project themselves.

via: TreeHugger

image via out-of-the-box

 

MAY 28

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"We would have also been delighted by the success of viagra fast Better Place and h..."

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Project Better Place Closing Up Shop
Written by Philip Proefrock on 28/05/13   

Project Better Place, the electric vehicle company that planned to revolutionize electric vehicles and www.beverly.org the automobile market with swapable, leased batteries for EVs, is closing down and liquidating its assets. The company was based in Silicaon Valley, but its main markets were in Denmark and Israel.

Shai Agassi, the company's founder, had a plan to make electric vehicles accessible by making the online us levitra batteries swappable. Like exchanging propane bottles for your grill, you would pull in to a service station and have the batteries swapped on your EV in about the time it would take to fill a conventional gas tank. Fresh batteries and you're ready to roll.

But the idea never caught on the way it needed to, and Project Better Place is now pulling the plug and entering liquidation. We had some skepticism about the economic model for the company when it was first being rolled out, though we would have been delighted to be proved wrong.

via: Marketplace

 

MAY 27

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Arctic Research Station Evacuated Due to Melting
Written by Philip Proefrock on 27/05/13   

A floating Russian research station on an ice floe in the Arctic is being evacuated far earlier than planned due to the breakup of the floe it is sitting on. A Russian icebreaker has been dispatched to pick up the scientists and their equipment from the ice floe that has housed the North Pole-40 research base since last October.

The station is the latest in a series of floating research stations that the Russians have operated dating back to the late 1930s. It was intended to remain occupied and cailis canadian farmacy in operation until September of this year, but the ice floe it is situated on has begun to break up. The floating research station is out of helicopter range, and the floe is too unstable to enable an airstrip to be created.

Finding a suitable ice floe for these research stations is becoming increasingly difficult. The team for this mission spent considerable time trying to locate a suitable floe to set up on last autumn. The Russian government has budgeted 1.7 billion rubles (about US$ 54 million ) to create a "self-propelled, ice- strengthened floating platform to replace the cialis soft tablets natural ice floes for future research stations."

Hat tip: @HotTopicNZ

 


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