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Tag: "per" at biology news

DNA Molecules Used To Assemble Nanoparticles

...aditional way," Baker said. At two to three months per synthesis, and a significant loss of yield for each step, that approach just wouldn't be practical. Instead, the Baker group will create a library of single-functional dendrimers that can be synthesized in parallel, rather than sequentially, and the...

New push for public health, AIDS spending at African Union summit

...try that has, thus far, committed to allocating 15 per cent of its gross domestic product to healthcare i...s included in the African Union spend less than 10 per cent of their annual revenues on health, anti-AIDS and anti-HIV efforts included. Controversial dru...

Protein discovery could unlock the secret to better TB treatment

...n region is multidrug-resistant TB (MDR-TB). Eight per cent of the bacteria causing TB in patients are resistant to one or more drugs and one per cent show multidrug resistance. Left untreated, a person with infectious TB of the lungs infects aro...

Priming embryonic stem cells to fulfill their promise

... volumes of liquid, about one trillionth of aliter per spot. The spotting machines, which cost as little as $20,000,have become common fixtures at most research universities, but theinnovation reported today in Nature Methods involved using such amachine to spot solutions of proteins rather than DNA. The...

Anti-bacterial additive widespread in U.S. waterways

...alf a century at rates approaching1 million pounds per year, but we have essentially no idea of whatexact...ocarban at concentrations of up to 6.75 micrograms per liter(parts-per-billion). This maximum concentration was 28 fold higher thanpreviously reported leve...

Recent breakthroughs in common adult leukemia highlighted in New England Journal of Medicine

...ancer Research in Genoa, Italy (Istituto Nazionale per la Ricerca sul Cancro, Genova, Italia). "Previous theories about the development and progression of chronic lymphocytic leukemia require revision. With new molecular and protein markers now identified, patients with features that portend poor outcom...

Male circumcision reduces risk of HIV transmission from women to men

...t study to examine the probability ofHIV infection per act of heterosexual sex among a population withmul...ad a more than two-fold increased riskof infection per sexual act compared with circumcised men--one in 80versus one in 200. Past studies have also found g...

Spider Venom Could Yield Eco-Friendly Insecticides

...sprayed in the U.S. every year. That's four pounds per person. A millionth of a pound can sometimes be deadly. And the chemical toxins that currently end up in the food and water supply pose a serious threat to animals, fish, and birds," says King, a research scientist at the University of Connecticut He...

Weill Cornell Research Reveals Secrets Of Trafficking Within Cells

...ship, we're going to go beyond looking at clathrin per se, and try and investigate other players in the endocytotic process," he said. ÒWe're going to ask questions such as, 'OK, if I tweak this molecule, how does that change clathrin's role in all of this?'Ó "It's really quite exciting," Dr. Ryan said....

DNA Recombination and Repair—A New Twist to RecA Function

...hors found that a RecA molecule hydrolyzed 20 ATPs per minute—or one ATP every three seconds. If ATP hydr...ry 1.5 seconds, or 40 RecA molecules to dissociate per minute. But this is not what the authors found—instead they estimated the dissociation to be at a ra...

Circles Of DNA Might Help Predict Success Of Stem Cell Transplantation

...hy donors contained 1,200 to 155,000 sjTREC copies per milliliter of blood, the investigators chose 1,200...ulations. In patients with fewer than 1,200 copies per milliliter, the transplantation was likely either to fail or be significantly slow in reconstructing...

New research indicates a 'troubled' greenhouse is brewing

...Fahrenheit. Rainfall in Utah jumped from 16 inches per year to 26 inches per year. As a result, sagebrush deserts of the western U.S. were transformed into sub-humid woodlands."...

Research Using Mouse Models Reveals A Novel Key Player In The Initiation Of Colon Cancer

... these tumor cells and found that more than ninety per cent of the tumors had lost the normal copy of the APC gene and now were completely deficient. What is the significance of these results on understanding the initiation of colon cancer? A deficiency of Foxl1 in the mesenchymal layer of the colon lea...

Falling ants glide back to trunk to avoid dangers of forest floor

...all at a relatively high velocity, around 4 meters per second (12 feet per second), and approach the tree at a steep angle. This means they frequently bounce off the trunk, th...

World's largest rainforest drying experiment completes first phase

...es in diameter -- increased from about one percent per year before the rainfall exclusion began to nine percent in the fourth year of the experiment, when soil water was depleted. This sensitivity of large trees to drought means that a decline in rainfall will likely push this tall, green, lush rainfores...

Scientists find fossil proof of Egypt's ancient climate

...area they study is a minuscule 0.7 of a millimeter per year, but there is evidence that the rainfall amou...egion have gotten up to as much as 600 millimeters per year, "not enough to make it a paradise," Smith said, "but enough to turn a barren environment into ...

Special Imaging Study Shows Failing Hearts Are 'Energy Starved'

... energy transfer. “The heart consumes more energy per gram than any other organ,?notes Paul A. Bottomley, Ph.D., lead researcher and director of magnetic resonance research at the Johns Hopkins Department of Radiology. “While scientists have long known that nucleotide adenosine triphosphate (ATP) is the...

Vascular structure and function improve with diet and exercise

...d. Average VO2 max increased from 32.1 milliliters per minute per kilogram (mL/min/kg) to 35.3 mL/min/kg. Average body weight decreased from 92.5 kg to 90.9 kg (203.5...

Protein offers way to stop microscopic parasites in their tracks

...by mosquito bites, kills at least 1 million people per year through damage to red blood cells and clogging of the capillaries that feed the brain and other organs. Cryptosporidium, which causes diarrhea, vomiting and other symptoms, is one of the most common causes of water-borne disease in the world. "...

Supercomputer Dedicated To Bioengineering, Computational Biology Installed

...er capable of 2.6 trillion mathematical operations per second, the second most powerful computer cluster ...ich was purchased from Dell for less than $180,000 per Teraflops (trillion floating point operations per second), is a distributed-memory parallel computer...

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