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High-speed signal mixer demonstrates capabilities of transistor laser
Scientists at the University of Illinois have successfully demonstrated a microwave signal mixer made from a tunnel-junction transistor laser. Development of the device brings researchers a big step closer to higher speed electronics and higher performance electrical and optical integrated circuits. view more (2009-03-20)
Test helps identify patients with breast cancer who will likely benefit from chemotherapy
A test that measures the amounts of two members of the same protein family-one of which appears to act as an oncogene, and the other as a tumor suppressor-helps identify patients with breast cancer who will likely benefit from chemotherapy and those who won't, according to researchers. view more (2006-09-18)
The Lancet Infectious Diseases (TLID) For immediate release
INFECTION IN AN AGEING WORLD The average life expectancy throughout developed countries has rapidly increased during the latter half of the 20th century, and geriatric infectious diseases have become an increasingly important issue. Ga'«tan Gavazzi and Karl-Heinz Krause (Department of Geriatrics, Geneva University Hospitals, Switzerland) explain... view more... (2002-10-30)
Targeting key proteins of carcinogenesis
Misfolded and disused proteins are eliminated by a cellular shredder called the proteasome. The cell labels the proteins it wants to dispose with Ubiquitin (Ub) in order to avoid the unwanted degradation of still needed proteins. view more (2007-06-25)
Navigate via the web with the SisNet receiver
Knowing your precise position anytime via the internet is now possible thanks to the Signal in Space through Internet (SisNet) technology developed by the European Space Agency. This technology combines the powerful capabilities of satellite navigation and the internet. As a result, the highly accurate navigation information that comes from the... view more... (2002-09-09)
Effective pain treatment for cancer patients?
Cancer patients often suffer from severe pain that cannot be effectively treated with conventional medication. view more (2009-06-26)
Slang evolves, says new research
New research suggests that slang evolves to give its users the edge over their competitors. And, as slang is understood and adopted by the establishment, groups develop new codes to keep them ahead of the game. Possible examples include cockney rhyming slang and verlan. Common Language or Tower of Babel: The Evolutionary Dynamics of Signals and... view more... (2002-11-08)
Penn researchers provide insights into how the immune system avoids attacking itself
A finding by University of Pennsylvania School of Medicine researchers about how immune cells "decide" to become active or inactive may have applications in fighting cancerous tumors, autoimmune diseases, and organ transplant rejection. view more (2006-10-13)
Drought reduces nitrogen-fixing in legumes
In drought conditions, the capacity for retaining carbon in legume nodules is limited and this may be the reason why there is a drop in nitrogen-fixing in legumes under these conditions. This was the conclusion of Mar'a Dolores G'ˇlvez in defending her PhD thesis at the Public University of Navarre. Her PhD was entitled, "Nodule metabolism... view more... (2005-02-04)
Researchers eavesdrop on the internal communication system plants use to warn they are under attack.
An international team of scientists have today reported the discovery of a protein, called DIR1, that is a key step in the pathways that enable plants to protect themselves against disease. DIR1 is involved in the transmission of a warning signal from plant cells infected by disease. The signal alerts cells, in areas remote from the infected site,... view more... (2002-09-24)
NPs-NPR-B/pGC-cGMP signal pathway is involved in diabetic gastroparesis
The natriuretic peptide (NP) receptor type B (NPR-B) gene was expressed in gastric smooth muscles of normal and diabetic rats and the expression was increased in diabetic rats. view more (2009-05-14)
A Morse code for human cells
Morse code is a simple, effective and clear method of communication and now scientists believe that cells in our body may also be using patterns of signals to switch genes on and off. The discovery may have major implications for the pharmaceutical industry as the signalling molecules that are targeted by drugs may have more than one purpose. The... view more... (2005-01-06)
RFID testbed measures multiple tags at once and rapidly assesses new antenna designs
Researchers have designed a system capable of simultaneously measuring hundreds of radio frequency identification (RFID) tags and rapidly testing new RFID tag prototypes. view more (2008-05-06)
Bright lights, not-so-big pupils
A team of Johns Hopkins neuroscientists has worked out how some newly discovered light sensors in the eye detect light and communicate with the brain. The report appears online this week in Nature. view more (2009-01-05)
Sheffield scientists light up bacteria
Researchers from the University of Sheffield have received joint funding from the Engineering and Physical Science Research Council (EPSRC) and the Ministry of Defence (MoD) to develop an innovative sensor to detect bacteria. view more (2007-03-13)
New Optical Antenna Brings Massive Benefits to Wireless Networks, Household Electronics and Longer Distance Data Transfer
A new optical antenna, developed by researchers at the University of Warwick, will bring significant benefits to credit card payments, wireless networks, household electronics and longer distance data transfer. The device was developed by Professor Roger Green and Roberto Ramirez-Iniguez, in the University of Warwick`s Engineering Department. It... view more... (2002-11-07)
Enzyme's second messenger contributes to cell overgrowth
Scientists at the University of California, San Diego (UCSD) School of Medicine have uncovered a novel pathway by which hormones elevated in inflammation, cancer and cell injury act on cells to stimulate their growth. view more (2007-09-27)
Agent that triggers immune response in plants is uncovered
Although plants lack humans' T cells and other immune-function cells to signal and fight infection, scientists have known for more than 100 years that plants still somehow signal that they have been attacked in order to trigger a plantwide resistance. view more (2007-10-05)
Mars Express: no signal from Beagle 2 so far
ESA's Mars Express orbiter made its first attempt to establish contact with the Beagle 2 lander, after the two spacecraft separated on 19 December 2003. The orbiter made its first pass over the Beagle 2 landing site today at 13:13 CET, but could not pick up any signal from the tiny lander. More attempts to contact Beagle 2 are planned in the... view more... (2004-01-07)
Cloudy day won't rain on laser communications
Just as clouds block the sun, they interfere with laser communications systems, but Penn State researchers are using a combination of computational methods to find the silver lining and punch through the clouds. view more (2006-11-13)
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