Popular science magazine Science and Techniques of TUBITAK’s February issue in the news, according to various studies done in Antalya TUG’da the team leader Alexey Vikhlinin, galaxy clusters slowed growth reported in the last 5.5 billion years. Vikhlinin, slowing the “dark energy” is said indicator.

Science people, do not put out enough of the dark energy, Einstein proposed “kozmolojik hard” driving forces associated with a close and that “space” as defined in the space environment as a driving force is the feedback. The last ten years, the observations of the universe’s expansion was accelerating.

Atom çarpıştırıcısındaki büyük arızanın yanlış elektrik bağlantısından kaynaklandığı tahmin ediliyor. Arıza nedeniyle 27 kilometre uzunluğundaki yer altı tünelinde bulunan makinenin çevresindeki atom altı parçacıkları hızlandırmakta kullanılan mıknatısların 53′ü onarım veya temizlik için yeryüzüne çıkarılmıştı.

Hızlandırıcı, ilk olarak 10 Eylül’de çalıştırılmıştı. Bilim adamları, yerin 100 metre altındaki tünelde proton huzmelerini neredeyse ışık hızında çarpıştırarak ortaya çıkacağını düşündükleri parçacıkları inceleyerek madde ve kainatın başlangıç şartları hakkında daha fazla bilgi sahibi olmayı tasarlıyor.

SEARCH DRAFT waves are

John Carlstrom of the University of Chicago, together with scientists from nine different universities in the world as one of the most powerful telescopes of the South Pole telescope (GKT) and the beginning of the universe and looking for evidence for evolution.

Teams in the calendar, to keep expanding the universe of course the most difficult test of the theory exists. For this, Einstein’s general theory of relativity predicts that the universe must be created as a result of the expansion of the wave must have shot is too weak.

It also expanded the universe of the various versions of the theory is correct to ensure the re-editing. Carlstrom explains this as follows: “If you can find images of waves that tell us everything about the universe expanding. At the moment it is less relevant than in the past have a different description. But none of this so extraordinary and hot ’scale, a Big Bang’in quantum fluctuations do not anticipate that you start with. ”

EVREN of different

And Fermi National Laboratuarları’ndan Professor Scott Carlstrom days Dodelsun past katldıkları ‘End of the Universe Start’ gave information about his work in conference. Conference between the parallel universe theory of the listeners out there was at Alan Guth.

TWO BIG irregularities

Dodelson conference said: “As you know in the universe is, by definition of the theory of the universe have no possibility of contact. However, research ways of expanding universe theory. According to this theory of universe formation has occurred in the two kinds of irregularities. The first atomic density of particles, with six occurring fluctuations and ongoing all over the universe. These fluctuations were observed by scientists already. ”

Atomic scale and the difference is they usually do not have to. But the cosmic dimension of enlargement in this instant you can ger. Theory that works in the state. And see how you can calculate the fluctuation of it to form the galaxies we see in this space is the result.

The second type of irregularity in space and time bending that Einstein is specified as the shooting waves are similar to define. Shooting of waves, gökbilimcilerin measuring electromagnetic radiation frequencies to reach the appropriate level of cosmic telescope to observe the possibility of there.

If John is working on tools Carlstrom’un this may occur if sensitive enough. ”

NEW Polarimeters HAZIRLANIYOR

South Pole telescope Carlstrom and his team (GKT) and make observations as well as working with the telescope, shooting wave gauge are working on a polarimeter.

Electromagnetic spectrum between infrared and microwave GKT wavelength can measure. Cosmic microwave radiation that occur after the Big Telescope Bang’den is crawling areas. The scientists would explain this as follows. The data obtained in cosmic GKT’nin drums and horn sounds like a symphony. Scientists are now lower than the symphony ears to detect sound waves that shot four are open.

Dark energy is DE SOLVING

The other big secret of the universe GKT dark energy is used to solve. Dark energy and the shooting power of the universe beyond it is lower. Dark energy is invisible but the effects last a few billion years, scientists in the sky as seen in field galaxies are beam.

After all of these questions will find answers to Dodelson hopeful: “We currently have part of the big picture of the physical laws which create them, but has yet to find physical laws bilmiyoruz.sonraki be our goal.”

Titania (or titanium dioxide) is a versatile chemical compound best known as a white pigment. It’s found in everything from paint to toothpastes and sunscreen lotions. Thirty-five years ago Akira Fujishima startled the electrochemical world by demonstrating that it also functioned as a photocatalyst, producing hydrogen gas from water, electricity and sunlight. In recent years, researchers have been exploring different ways to optimize the process and create a commercially viable technology that, essentially, transforms cheap sunlight into hydrogen, a pollution-free fuel that can be stored and shipped.

Increasing the available surface area is one way to boost a catalyst’s performance, so a team at Northeastern has been studying techniques to build tightly packed arrays of titania nanotubes, which have a very high surface to volume ratio. They also were interested in how best to incorporate carbon into the nanotubes, because carbon helps titania absorb light in the visible spectrum. (Pure titania absorbs in the ultraviolet region, and much of the ultraviolet is filtered by the atmosphere.)

This brought them to the NIST X-ray spectroscopy beamline at the National Synchrotron Light Source (NSLS)**. The NIST facility uses X-rays that can be precisely tuned to measure chemical bonds of specific elements, and is at least 10 times more sensitive than commonly available laboratory instruments, allowing researchers to detect elements at extremely low concentrations. While making measurements of the carbon atoms, the team noticed spectroscopic data indicating that the titania nanotubes had small amounts of potassium ions strongly bound to the surface, evidently left by the fabrication process, which used potassium salts. This was the first time the potassium has ever been observed on titania nanotubes; previous measurements were not sensitive enough to detect it.

The result was mildly interesting, but became much more so when the research team compared the performance of the potassium-bearing nanotubes to similar arrays deliberately prepared without potassium. The former required only about one-third the electrical energy to produce the same amount of hydrogen as an equivalent array of potassium-free nanotubes. “The result was so exciting,” recalls Northeastern physicist Latika Menon, “that we got sidetracked from the carbon research.” Because it has such a strong effect at nearly undetectable concentrations, Menon says, potassium probably has played an unrecognized role in many experimental water-splitting cells that use titania nanotubes, because potassium hydroxide is commonly used in the cells. By controlling it, she says, hydrogen solar cell designers could use it to optimize performance.

* C. Richter, C. Jaye, E. Panaitescu, D.A. Fischer, L.H. Lewis, R.J. Willey and L. Menon. Effect of potassium adsorption on the photochemical properties of titania nanotube arrays. J. Mater. Chem., published online as an Advanced Article, March 27, 2009. DOI: 10.1039/b822501j

** The NSLS is part of the Department of Energy’s Brookhaven National Laboratory.