Chemical Composition Current Events | Chemical Composition News
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New technique measures chemical composition of tiny details
The method which the Eindhoven have developed is based on the radiation emitted by an object when it is irradiated by a beam of electrons. The measurable phenomenon occurs because the electrons in the beam collide with electrons in the atoms making up the object so that they enter an excited state. When the electrons return to the free state, with... view more... (2000-01-18)
Fingerprinting the Milky Way
Using ESO's Very Large Telescope, an international team of astronomers has shown how to use the chemical composition of stars in clusters to shed light on the formation of our Milky Way. This discovery is a fundamental test for the development of a new chemical tagging technique uncovering the birth and growth of our Galactic cradle. view more (2007-03-23)
Looking beyond biodiversity to explain community invasibility
Most existing experimental and theoretical studies suggest that diversity is an effective barrier to plant invasion. However, these studies may be limited in their generality, because they involve relatively small numbers of species or examine only short time periods. To evaluate how invasions are controlled in more realistic situations, Meiners,... view more... (2004-02-05)
Pitt professor designs less-risky reactor for clean, safe energy
Reactors that burn hydrogen or natural gas to generate energy can be dirty and dangerous. The mix of air with hydrogen or natural gas can explode easily if composition and temperature are not carefully controlled. And reactors often produce polluting byproducts. view more (2006-09-13)
NIST releases new standard for semiconductor industry
A wide range of optical electronic devices, from laser disk players to traffic lights, may be improved in the future thanks to a small piece of semiconductor, about the size of a button, coated with aluminum, gallium, and arsenic (AlGaAs). view more (2006-10-13)
Barcode for explosives
Experts encounter a serious problem when studying the crime scene after an explosion. They can establish to a high degree of probability the type and power of the device used by terrorists and with what explosive substance it was filled with. However, they are usually unable to answer the most important question as to where and when the explosive... view more... (2005-03-03)
New chemical imaging technique could help in the fight against atherosclerosis, suggests research
A new chemical imaging technique could one day help in the fight against atherosclerosis, suggests research published in the August 2009 edition of the Journal of the Royal Society Interface. view more (2009-07-31)
Virtual biopsy cuts out need for diagnostic surgery
A non-invasive diagnostic tool to detect surface cancers quickly and painlessly using technology currently employed by gyms to calculate body composition has been developed by a QUT PhD medical physics researcher. view more (2008-01-18)
new structural view of organic electronic devices
Although still in the qualifying rounds, U.S. researchers are helping manufacturers win the race to develop low-cost ways to commercialize a multitude of products based on inexpensive organic electronic materials-from large solar-power arrays to electronic newspapers that can be bent and folded. view more (2005-09-13)
Novel Health Food Composition Proves Highly Effective
A more than 50 % increase in the life span of Zucker rats, a commonly used animal model for human obesity, was seen by enrichment of unhealthy food with a novel combination of plant sterols and mineral nutrients. Extensive studies in the University of Helsinki have shown that the increase in life span is mainly due to the ability of this new... view more... (2004-11-04)
Ceramides from sheeps wool similar to those of the human skin
The high concentration of ceramides extracted by means of supercritical fluid technology has provoked great interest in the pharmaceutical and cosmetics industries. Due to their composition, these ceramides increase the hydration of the skin and accelerate the repair of damaged skin tissue. view more (2005-04-26)
A computer simulation tool that predicts the influence of forest clearings on soil fertility
The process of clearing consists of cutting down trees in such a way that those remaining have more resources and can grow more. The question was if too many had been cut down, with the concomitant removal of nutrients, and the manner, therefore, in which this process might affect long-term soil fertility. view more (2004-09-08)
Antarctic snow inaccurate temperature archive
According to Dutch researcher Michiel Helsen, annual and seasonal temperature fluctuations are not accurately recorded in the composition of the snow of Antarctica. His research into the isotopic composition of the Antarctic snow has exposed the complexity of climate reconstructions. view more (2006-02-16)
Protein binds whenever it can
Dutch cancer researcher Joost Martens has discovered that the protein p300, which plays an important role in the correct transcription of DNA to RNA, can bind to DNA at several sites. The protein can also occupy a position in various complexes, each with its own protein composition. This knowledge is important for gaining a better understanding of... view more... (2003-06-24)
Super high temperature, high wear SiAlON coatings made using innovative production methods
Sialons are ceramics possessing chemical inertness, good thermal shock resistance, and excellent mechanical properties that are retained up to high temperatures. view more (2005-11-09)
Moon and Earth Formed out of Identical Material
According to the «Giant Impact» theory the moon was formed by a collision between a proto-earth and a smaller planet. In the October 12 issue of Science, ETH researchers present results showing that the composition of the oxygen isotopes of the moon and the earth are identical. This is a strong indication that the proto-earth and the planet with... view more... (2001-10-11)
Butterflies lose body fat during metamorphosis
A group of scientists from Oregon have discovered that butterflies experience a great loss in body fat during metamorphosis. view more (2006-03-21)
Caltech scientists use high-pressure 'alchemy' to create nonexpanding metals
By squeezing a typical metal alloy at pressures hundreds of thousands of times greater than normal atmospheric pressure, scientists at the California Institute of Technology (Caltech) have created a material that does not expand when heated, as does nearly every normal metal, and acts like a metal with an entirely different chemical composition. view more (2009-06-16)
Mars Express PFS spectrometer back at work
The Planetary Fourier Spectrometer (PFS) on board ESA's Mars Express spacecraft is now back in operation after a malfunction, reported a few months ago. view more (2005-11-03)
Breastfeeding duration and weaning diet may shape child's body composition
Variations in both milk feeding and in the weaning diet are linked to differences in growth and development, and they have independent influences on body composition in early childhood. view more (2009-05-28)
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