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More Efficient Flight in Formation

Many people are very familiar with the V formation used by migrating flocks of birds, and scientists have determined that this is an efficient mode of travel which helps the birds conserve energy, especially on long migratory journeys. But the the best place online cialis prescriptions same concept is being considered to ordering viagra on-line from canada improve the efficiency of only best offers 50 mg cialis commercial jetliners.

Among aircraft manufacturers, Airbus is one of the companies looking at the advantages of commercial flocking. "In a V formation of 25 birds, each can achieve a reduction of induced drag by up to 65 per cent and increase their range by 7 per cent. While efficiencies for commercial aircraft are not as great, they remain significant."

It is possible that, in the future, commercial flights might flock together in this way to save fuel. The initial tests of this approach might be carried out with trans-ocreanic flights originating in separate Australian cities which would coordinate their schedules and meet up in order to cross the Pacific together, before they "peel off and head to their separate destinations."

image credit: Airbus

via: Quirks & Quarks


New Design for Efficient Concentrating Solar Power

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 heat could damage the cialis soft tablets device.

A group at IBM Research - Zurich is addressing this problem and announced on cialis non generic 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 viagra prescriptionsgeneric viagra sale a microchannel water cooling system, the system is capable of 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 levitra blood thinner proposed system doesn’t mention any market plans, it does claim that the design is suitable for mass production. If they do geniune viagra 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


Dissolving Circuit Boards for Easier Electronics Recycling

Recycling and reusing electronic components could be made much easier with a new polymer that produces a circuit board that will dissolve when immersed in hot water. The circuit board was developed by the UK’s National Physical Laboratory (NPL) as part of the ReUSE (Reuseable, Unzippable, Sustainable Electronics) project.

The circuit board material is hardy enough to withstand ordinary heat and viagra brand moisture, but full immersion in hot water acts to release the components from the board. This allows for over 90% of the electronics materials to be recovered, whereas typically less than 2% of the materials on a circuit board are re-used.

Although this is not necessarily beneficial for the repairability of electronics, it could be a definite improvement in helping get a handle on the growing mountains of electronics waste and make recycling of drug propecia electronics components and recovery of minerals an easier process.

Video link: YouTube

image: CC BY-SA 1.0 by Mark Pellegrini/Wikimedia

via: Treehugger


Vacuum Tube Technology Could Make Faster Circuits

New obstacles with the limits of electron flow through semiconductors are one of the many problems engineers face as they continue to push for increased speed and power for electronic devices. But a team of researchers is looking back at the technology of the vacuum tube to develop a means to increase circuit and computational speed.

Once it was invented in the late 1940s, the transistor began to replace the vacuum tube, and led to an amazing range of uses for solid-state devices and the variety of electronic gadgets we have today. Transistors offered savings in both size and energy. But one of the things that vacuum tubes provided was an obstacle free path for unhindered electron flow through the vacuum. "Electrons traveling inside a semiconductor device frequently experience collisions or scattering in the solid-state medium." The problem with vacuum tubes, besides their large size, is that they require high voltages to operate.

Researchers at University of cheapest prices for cialis Pittsburgh have developed a method for electrons to travel through a nanoscale vacuum which could lead to advances in electronics with improvements in speed and transistor density. According to the female herbal cialis project leader, Hong Koo Kim, "The emission of this electron system into vacuum channels could enable a new class of low-power, high-speed transistors, and it’s also compatible with current silicon electronics, complementing those electronics by adding new functions that are faster and i use it cialis for sale online more energy efficient due to free levitra sample the low voltage."

image: CC-BY-SA-2.0-DE by Stefan Riepl (Quark48)

via: GigaOM


Apple Ditches Green Certification, Then Rejoins

A couple weeks ago, Apple announced that it would no longer have its laptops certified under EPEAT (Electronic Product Environmental Asessment Tool), a voluntary industry standard that has been used to advance recyclability and reduce the use of toxic materials in electronic devices. But now, after enormous outcry against Apple's decision, the company has realized its mistake.  On Friday, the company announced "all eligible Apple products are back on EPEAT."

EPEAT was developed in the early 2000s with a consortium of representatives from manufacturers, trade associations, government agencies, and other groups seeking to promote a more environmentally conscious lifecycle for electronic products. Apple was part of the EPEAT Development and Implementation Team, and 40 of its desktops, notebooks and displays have received EPEAT Gold certification.

Speculation has been that withdrawing from EPEAT was because the company's new latops were using glue instead of screws (which would prevent easy disassembly for repair or recycling) to attach batteries inside the case. The reversal may also be due to the requirement that 95% of federal electronics purchases be EPEAT certified.

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