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Massive herds of animals found to still exist in Southern Sudan

Aerial surveys by the New York-based Wildlife Conservation Society confirm the existence of more than 1.2 million white-eared kob, tiang antelope and Mongalla gazelle in Southern Sudan, where wildlife was thought to have vanished as a result of decades-long conflict. Despite the war, some species ...

DNA computation gets logical at the Weizmann Institute of Science

... Biomolecular computers, made of DNA and other biological molecules, only exist today in a few specialized labs, remote from the regular computer user. Nonetheless, Tom Ran and Shai Kaplan, research students in the lab of Prof. Eh...

August 2009 Geology and GSA Today media highlights

...h water, salt, and sulfur concentrations typical for magmatic sources would exist as separate brine and vapor phases at pressures corresponding to the shallo...f the quartz vein-related high-grade zones. At greater depths, fluids would exist as one supercritical phase, with a higher proportion of hydrogen sulfide, w...

UC San Diego engineer provides insights to decades-old DNA squabble

.... By simulating this model under physiological conditions using fast computer algorithms, Arya has provided the first evidence that chromatin does not exist uniquely in solenoid or zigzag forms but rather exhibits a "heteromorphic" structure where both types of structures are in balance with each other. Ar...

Extraterrestrial platinum was 'stirred' into the Earth

...e example of an unexpected fundamental discovery arising from a practical applied science study and demonstrates the very positive collaborations that exist between CSIRO and the University of Western Australia," Dr Fiorentini said. ...

UCSF researchers identify new drug target for Kaposi's sarcoma

...virus), shingles (Varicella zoster virus), genital herpes (herpes simplex), retinitis (cytomegalovirus) and cancer (Kaposi's sarcoma). While therapies exist for these viruses, they often have negative side effects and are facing rising viral resistance. In addition to validating herpes virus proteases a...

Organic food not nutritionally better than conventionally-produced food

...ublic Health Intervention Research Unit, and one of the report's authors, comments: 'A small number of differences in nutrient content were found to exist between organically and conventionally produced foodstuffs, but these are unlikely to be of any public health relevance. Our review indicates that th...

University of Toronto helps to 'barcode' the world's plants

...identify it as belonging to a particular species. "Barcoding provides an efficient means by which we can discover the many undescribed species that exist on earth," says Spencer Barrett, a professor of ecology and evolutionary biology at the University of Toronto and the head of the Canadian plant barco...

Stress signals link pre-existing sickness with susceptibility to bacterial infection

...e able to directly influence the ability of bacteria to replicate inside of the single-celled organism, Dictyostelium . Striking similarities that exist between simple organisms like Dictyostelium and humans allow scientists to use them to understand human disease. Dictyostelium is a free-living a...

International research team seeks to unravel flatworm regeneration

...monstrate that ten microRNAs are specifically linked to stem cell biology and may therefore play a role in regeneration. A few of these microRNAs also exist in humans. Furthermore, the researchers discovered millions of piRNAs. This is a group of just recently discovered small RNA molecules which are i...

Smaller plants punch above their weight in the forest, say Queen's biologists

...vious studies revealed that larger plant species monopolize sunlight, water and other resources, limiting the number of smaller plant species that can exist around them. But new research has proven that this is not generally the case in natural vegetation. In the Queen's project, PhD student Laura Keati...

Study by NTU professors provides important insight into apoptosis or programmed cell death

... RanGTP in the nucleus and a low concentration of RanGTP in the cytoplasm (the body enveloping the cell's nucleus). It is this gradient of RanGTP that exist across the nuclear-cytoplasmic boundaries that serves as a track and directs the transport of proteins and other molecules into and out of the nucleus...

Methane-eating microbes can use iron and manganese oxides to 'breathe'

...ese, are more energetically favorable than sulfate." Microbes or groups of microbes -- consortia -- that use sulfates to convert methane for energy exist in marine sediments. Recently other researchers have identified microbes that use forms of nitrogen in fresh water environments to convert methane. ...

Scientists track chemical changes in cells as they endure extreme conditions

...ons that should kill them. The team tracked the chemical changes in Desulfovibrio vulgaris, which is a single-cell bacterium that normally can only exist in an oxygen-free environment. They exposed the cells to the most hostile of conditions air and watched as some cells temporarily survived by initia...

Playing it safe

...man testis tissue. A bewildering variety of cells "At first glance, it would appear that it has long been established that pluripotent cells exist in the testis of adult humans and mice," says Schler. "However, it is often unclear as to exactly which cells are being referred to in the literature ...

Finding the constant in bacterial communication

...cteria or other cells to direct their actions in much the same way that a basic computer program directs a computer. Such re-programmed bacteria would exist as a synthetic ecosystem. "Each population will synthesize a subset of enzymes that are required for the population as a whole to produce desired p...

The tiny difference in the genes of bacteria

... ballast water or climate change, the species may also gain importance in Europe. As in the Cholera bacterium, various Vibrio parahaemolyticus strains exist with varying infectivity. Distinguishing those strains has been a challenge until now. The newly developed method makes it now possible to characte...

New national genome center launched

...ntre (TGAC) will further the UK's capacity in genomics - the science of understanding the genetic makeup of organisms and the genetic differences that exist between individuals. This knowledge can then be used for developments that include the production of new antibiotics to fight 'superbugs', breeding of...

The tiny difference in the genes of bacteria

... ballast water or climate change, the species may also gain importance in Europe. As in the Cholera bacterium, various Vibrio parahaemolyticus strains exist with varying infectivity. Distinguishing those strains has been a challenge until now. The newly developed method makes it now possible to characte...

Study finds DNA barcoding requires caution without closer examination

...world's biota. This is driven by a desire to open taxonomic identifications to all user groups and by the short supply of taxonomists that do not even exist in many groups. Although DNA barcoding is being rapidly accepted in the scientific literature and popular press, some scientists warn that we are bei...

UTSA wins San Antonio Area Foundation grant to further chlamydia research

...al average. Nearly 17% of Texas females in the 15-19 age group test positive for the infection. However, experts believe even more chlamydia cases exist than are reported, because the disease generally progresses without exhibiting noticeable symptoms. Left untreated, chlamydia infections can do sever...

Researchers observe single protein dimers wavering between two symmetrically opposed structures

...sity of California, San Diego, and Ohio State University have used a very sensitive fluorescence technique to find that a bacterial protein thought to exist in one "natural" three-dimensional structure (shape), can actually twist itself into a second form, depending on the protein's chemical environment. O...

New piece found in the puzzle of epigenetics

...n that the numerous biological functions of an organism are not regulated solely by the DNA sequence of its genes: Superordinate regulatory mechanisms exist that contribute to determining the fate of genes. Although they are not anchored in the DNA, they can even be passed on to subsequent generations to a...

Chemical in blood may explain susceptibility to bladder pain

...olecular peaks. "It's a powerful enough technique that we might even be able to identify subtle differences in patients with multiple diseases that exist in addition to, but that are unrelated to, the interstitial cystitis," he said. The researchers then determined the chemical structures within thos...

They are young and need the job: A second chance for dangerous T-cells

..., non-autoreactive T-cells to our needs, since they can be obtained in the millions from the blood of patients. Young T-cells, on the other hand, only exist in the thymus. We will now investigate whether there is a specific time window in the life of a young T-cell that allows negative selection or reprogr...

A tiny frozen microbe may hold clues to extraterrestrial life

...ium that has been trapped more than three kilometres under glacial ice in Greenland for over 120 000 years, may hold clues as to what life forms might exist on other planets. Dr Jennifer Loveland-Curtze and a team of scientists from Pennsylvania State University report finding the novel microbe, which ...

Protein linked to change in tissue that surround and support breast tumors

... Washington, DC A protein known to be overly active in breast cancer can exist in a form that seems to change the structural composition of mammary tissue, potentially making it more conducive to tumor progression, say researcher...

American Chemical Society's Weekly PressPac -- June 3, 2009

...udy identified for the first time a family of poisons never before known to exist in these brightly colored creatures or elsewhere in nature: the N-methyldec...e there are more than 500 alkaloids, potentially toxic substances, known to exist in the skin of poison frogs of the family Dendrobatidae. Frogs use them as ...

Jefferson receives $1.7 million grant to study stem cells in intervertebral discs of the spine

... and differentiation with the aim of regenerating diseased and painful intervertebral discs. A previous study by the same group showed that stem cells exist in both animal and human intervertebral discs. This grant will enable the researchers to continue studying the disc cells and determine factors which ...

Women faring well in hiring process for science faculty jobs at research universities

... SALARY: Women full professors were paid on average 8 percent less than their male counterparts, the report says. This difference in salary did not exist in the ranks of associate and assistant professors. CLIMATE AND INTERACTION WITH COLLEAGUES: Female faculty reported that they were less likely ...

A quicker, cheaper SARS virus detector -- one easily customizable for other targets

...ed more than 8,000 people in 2002-2003, killing nearly 10 percent of them. Commercial systems using enzyme-linked immunosorbent assay (ELISA) now exist to test for SARS, but the new system has advantages in time, cost and portability. The first step was the creation, by Richard Roberts and Mark Tho...

Studies shed light on collapse of coral reefs

...and how their physiology works will we know if they can adapt to climate changes, or ways that we might help." Corals are tiny animals, polyps that exist as genetically identical individuals, and can eat, defend themselves and kill plankton for food. In the process they also secrete calcium carbonate th...

New center at Georgia Tech aims to improve recovery of soldiers with severe injuries

...rs are focusing their efforts on stem cells. Even though stem cells have tremendous potential for repairing such defects, effective methods do not yet exist for delivering them to an injury site and of ensuring that they survive and remain at that site long enough to impact the regeneration process. "...

A new mouse model provides insight into genetic neurological disorders

...scle that is significant enough in some cases to lead to death. The symptoms become progressively worse over time and no effective treatments or cures exist for these diseases. Researchers came together from the University College London (UCL), the Medical Research Centre (MRC) Harwell, the University of ...

NIH announces new program to develop therapeutics for rare and neglected diseases

...00,000 Americans. NIH estimates that more than 6,800 rare diseases afflict more than 25 million Americans. However, effective pharmacologic treatments exist for only about 200 of these illnesses. Many neglected diseases also lack treatments. Unlike rare diseases, however, neglected diseases may be quite co...

University of Florida study provides insight into evolution of first flowers

...ity of flowering plants we see today. The study compares the genetic structure of two vastly different flowering plants to see whether differences exist in the set of circuits that create each species' flower. Researchers examined the genetic circuitry of Arabidopsis thaliana, a small flowering plant c...

American Chemical Society's Weekly PressPac -- May 13, 2009

... of ACS' Journal of Agricultural and Food Chemistry , a bi-weekly publication. In the new study, Lisa Mauer and colleagues note that tests already exist for melamine, which is widely used in plastics. Certain food manufacturers, however, have added melamine to food products marketed for humans and dome...

Babies born to native high-altitude mothers have decreased risk of low birth weight

...n delivery to the fetus and the greater the baby's birth weight These differences between the Andean and European women and their babies did not exist at low altitude. The question of why babies born at high altitude are smaller is not an academic one. Low birthweight is associated with higher rat...

Princeton team's analysis of flu virus could lead to better vaccines

...interactive process -- known as antibody interference -- to advantage, the scientists believe it may be possible to design more powerful vaccines than exist today. The findings are described in the May 11 online edition of the Proceedings of the National Academy of Sciences . "We have proposed tha...

'Beating' heart machine expedites research and development of new surgical tools, techniques

...esting in live animal models," says Dr. Greg Buckner, who directed the project, "but this system creates an intermediate stage of testing that did not exist before. It allows researchers to do 'proof of concept' evaluations, and refine the designs, before operating on live animals." Buckner is an associate...
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