Monthly Archives: September 2010
More Efficient simulation of the Cessation of the Weightlessness upon Returning from the Space
How does it feel exactly the re-experiencing the Earth’s gravity after a long stay in the weightlessness of space? Although the effects are well known from the experience of astronauts, has always been difficult during their training to realistically simulate the effects that the human body can experience. A new device now moves decisively to improve such simulations.
A research group leads by Dr. Steven Moore from U.S. National Space Biomedical Research Institute (NSBRI) has developed a system of galvanic vestibular stimulation (GVS) which, in a safe, induces sensory and motor disorders commonly experienced by astronauts when they return to Earth’s gravity after a long stay in space. The new system is emerging as an excellent tool for training for astronauts.
The Trojan asteroid in the L5 Lagrange point of the orbit of Neptune
There are places in space where the gravitational pull of a planet and the Sun offset each other, allowing other smaller bodies remain stable. These places are called Lagrange points.
Trojan-type asteroids have been found in some of these stable points near Jupiter and Neptune. Trojan asteroids share the orbits of the planets and serve astronomers to better understand how they formed and how the solar system evolved.
Now, Scott Sheppard of the Department of Terrestrial Magnetism of the Carnegie Institute, and Chad Trujillo discovered the first Trojan asteroid, 2008 LC18, stability in a region difficult to detect in the orbit of Neptune, a region known as Lagrange point L5. The astronomers made use of discovery to estimate the population of asteroids in that region. According to this estimation, the population of asteroids of L5 is similar to that of L4, also in the orbit of Neptune.
New memory device that uses the spin of electrons to Read and Write Data
A team of researchers from Ohio State University has demonstrated an innovative computer memory device that uses the spin of electrons to read and write data.
Spintronics, which is how you call this new field of technology the use of electron spin, is an alternative to traditional microelectronics. Drawing on spintronics, it is theoretically possible to store more data in less space, process faster and consume less energy.
Arthur J. Epstein and his colleagues created the prototype of this pioneering spintronic device using manufacturing techniques commonly used in modern computer industry.
Ideas to Promote Nuclear Energy Worldwide
A team of scientists has outlined a sort of road map for 20 years to achieve the global renaissance of nuclear energy. In this revival proponent, nuclear reactors may appear many replacement parts, portable mini reactors, and even nuclear power plants installed on board vessels to supply electricity to coastal or not too far from the coast.
These scientists, from Imperial College London and University of Cambridge, suggest a two-stage plan. In the first stage, countries that already have a nuclear infrastructure, would replace nuclear power stations or drag on life. This would be followed by a second stage, characterized by an overall expansion of the nuclear industry by 2030. The research team argues that its roadmap could fill the vacuum energy will soon begin to be felt as they getting out of the older-design nuclear power plants, as well as those fed by gas and coal that are increasingly problematic for the inexorable depletion of fossil fuels and their harmful impact on global warming. According to these scientists, nuclear power would be an ideal way to reduce the dependence of human civilization on fossil fuels.
Do not forget the online reputation management
At a time when more and more households are connected to the internet and the Web becomes a major channel of information, it becomes important to monitor what is said about the Internet itself. Technological advances in communication on the web induce more active involvement of users, in a participatory manner, in the trial of the brand companies. This can result in negative effects, even disastrous, especially when carried out with a bad intention. Fortunately, by acting promptly, parades exist effective.
The internet is a powerful communication tool. The companies were the first to use it to reach new targets to cut costs and offer their products and services. For years, everything went smoothly. However, today, simplifying the use of the tool and the multiplication of exchange accelerators (RSS feeds, bookmarks collective site opinion) promote discussion between users on a participatory model. As a result, for the branding of a company, that the land may become dangerously undermined. I consider this sentence from conversation marketing, and consequently, the reputation online, that in which we become in the eyes of our customers or users or consumers, and that is only one end of the imaginary path that passes and to whom they are addressed the amount of strategies used with Social Media. Remember, social media are based in part on reputation. Build your reputation to contribute to the community and also get better results when you yourself promotions.
Maintaining a good reputation on the Internet involves three types of expenses: build your brand online, check out the comments other repairs shed and criticism (or make them less visible), the importance management of this term is vital. The conversation that has become quite large by a simplification, new ideas on how to handle online marketing, not just talk about branding, look at what accounts and how you are seen on the internet that is, reputation online.
A “Trojan Horse” Biological attack cancer cells from inside of these
Combining nature and Greek mythology, researchers at the Technion (Israel Institute of Technology) have developed a “Trojan Horse” tiny to inject anticancer drugs directly to cancer cells. With this system, drugs are released only when they are inside them. Thus, there are no damage to healthy cells in the surrounding area.
Yoav Livney team created a system linking folic acid and an anticancer drug to an extract of larch, a tree abundant in the vast boreal forests of Russia and Canada.
Some cancer cells produce 10 to 100 times more folate receptors than healthy cells. These receptors capture folic acid, which is necessary for rapid growth and division of cancer cells. Therefore, the researchers used folic acid as bait for the selective attack against cancer cells.
Natural Selection in Three Years
A team of researchers has observed more rapid evolutionary responses recorded in wild populations. In just three years and three generations, a population of sticklebacks evolved tolerance to water temperature 2.5 degrees Celsius lower than that endured by their predecessors in their usual environment.
The study provides experimental evidence that evolution can help some people to survive to the effects of sudden climate change.
With a length of between 3 and 10 centimeters, stickleback fish originated in the ocean but began populating the lakes and streams of fresh water after the last ice age. In the last 10,000 years, marine sticklebacks and freshwater have developed different physical and behavioral traits, which makes them the ideal model for the natural selection theory of Darwin.
The Twilight of Civilization Easter Island was a result of Strangers
An archaeologist who has studied Easter Island, famous for its mysterious stone statues, blames outsiders, rather than the native population of the island as has been believed until now, the decline suffered for centuries by civilization that built the statues.
Research conducted by archaeologist Karina Croucher, University of Manchester, supports the increasingly widespread view on the historical role of old people who lived on the island of Rapa Nui, dubbed “Easter Island” by European sailors first came upon her in 1722.
Archaeologist claims that for a long time the ancestors of the islanders have been falsely accused by Westerners to be primitive and warlike, had shot down some of the statues, and having over-exploited natural resources of the island.
Increased mobility of microorganisms because of Global Climate Change
Every day, millions of microorganisms come flying to Spain from the Sahara Desert and the Sahel region. Louis Pasteur showed in 1861 that microbes can move through the air, but only recently discovered that bacteria, fungi and viruses can travel thousands of miles trapped dust particles. The satellite images show clouds of dust particles that class sizes very similar to that of the Iberian Peninsula.
For the first time, the international project team has analyzed these microorganisms Ecosensor travelers using molecular biology techniques. In addition to identifying the species, researchers have found that these organisms colonize in mountain lakes at high altitudes, such as in Sierra Nevada and the Pyrenees. They have also found that the phenomenon is increasing because of global climate change.
Evolutionary Genetic Roots of Cancer in marine sponges
The recent publication of the complete genome sequence of an actual sea sponge, reveals genes that date back hundreds of millions of years ago. The genome sequence shows the high genetic complexity that existed at the time and reveals that the genetic roots of cancer evolutionary sink in these animals.
A team of scientists, including four from the University of California at Santa Barbara, carried out the sequencing of the current genome of a marine sponge from Great Barrier Reef of Australia. The sponge belongs to a group of organisms of 650 million years old.