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Tag: "build" at biology news

Mayan stingless bee keeping: Going, going, gone?

...l of meliponiculture as a way of life, but also to build up breeding stock to be re-introduced into the wild where bees play an important role as pollinators," Roubik explains. But beekeeping is fast becoming a global monoculture. Africanized honey bees produce more honey, and therefore are an economicall...

Elderly mice yield clues to the process of growing old

...ng to the new study, occurs, in part, as mutations build up in the DNA of energy-generating mitochondria, triggering the death of critical cells that lead to such things as hair and weight loss, hearing and vision impairment, loss of muscle mass, weakened bones and fewer circulating red blood cells. Mitoch...

Industrial contaminants spread by seabirds in High Arctic, new Canadian study shows

... cold areas like the Arctic. "Some chemicals will build up in the food webs that comprise northern traditional diets," says Ms Kimpe. "As a result, some of our northern Canadian populations are among the most mercury and PCB-exposed people on the globe." Dr. Mallory has led a team of researchers studying...

New bioinformatics technique for systematically analyzing key regions in DNA that help control gene activity

...oland in the 1980s and is particularly suitable to build models from incomplete and uncertain data. It has been used in applications ranging from medical and financial data analysis to voice recognition and image processing. Applied to gene regulation, the approach was able to predict the location of regul...

UIC developing drug for SARS

...ll help Arun Ghosh, professor of chemistry at UIC, build protease inhibitors, like the prototype he assembled earlier, through what is called structure-based drug design. He will create computer images of each enzyme coupled with compounds anticipated to obstruct the pockets, revealing whether and how tigh...

Once given 'no respect,' cells' tiny RNAS take driver's seat

...her forms of RNA -- like the messenger RNA used to build proteins. However, microRNAs are immediately processed by cellular machinery that deals with what is known as RNA interference -- a biological phenomenon that specifically prevents RNA from being used to make proteins. Accompanying the Hopkins paper...

Nanoscale method for investigating living systems

..." says Blick. "Through these ions, your cells will build up electric potential and communicate with other cells. This is how signal transduction is performed in your body, but it is also how chemicals react with your body. When, for example, caffeine enters a cell it stimulates the opening and closing of t...

Progress on HIV/AIDS significant but insufficient

...g the challenge could it succeed in its efforts to build a humane, healthy and equitable world. General Assembly President Jean Ping (Gabon) said that the HIV/AIDS threat in 2005 was much greater than when the Assembly met here four years ago. In every way, that threat had attained alarming proportions. I...

Researchers Create DNA-Based Sensors for Nano-Tongues and Nano-Noses

...ground. "There are few limits as to what we could build these sensors to detect, whether it is a molecule wafting off an explosive device or the protein byproduct of a cancerous growth," Johnson said. Researchers involved in the project include Cristian Staii, a graduate student in the Department of Phys...

NYU biologists map out early stages of embryo formation

...nd how the parts encoded by the genome are used to build complex dynamical biological systems--in this case, an engineering diagram for embryo formation. Using a new way to combine results from different functional genomic approaches including RNA interference (RNAi), a method for studying the function of ...

Fluoride poisoning in China due to clay, not coal

...n yuan (US$4.2 million) to help farmers in Guizhou build stoves with outdoor chimneys. But, in a paper published in the July-August issue of the Chinese Journal of Endemiology, researchers led by Zheng Baoshan of the Institute of Geochemistry in Guizhou province show that the average fluoride content of c...

Immune system has evolved to prevent autoimmune disease

...sical behavior at the molecular or atomic scale to build up a picture of the behavior at a larger level. In this case, Deem and postdoctoral researchers Jun Sun and David J. Earl studied the physical properties of fragments of DNA to determine the origins, behavior, and generation of antibodies. Generatin...

Vaginal gel may provide a new approach to HIV prevention

...e," says NIAID Director Anthony Fauci. "We need to build on these promising animal studies and move toward establishing the safety and effectiveness of combination microbicides in women." ...

A 'dimmer switch' for genes

...hate molecules, which previously had been shown to build up on proteins until a certain number accumulated. The result, according to the study, has been described in the past as a sharp on-off switch of protein activity. "What we found was that each time we added a phosphate to a particular unstructured r...

What Makes The Brain Tick, Tick, Tick: Researchers Gaining New Insights Into Brain's Internal Clock

...his internal clock. And the second challenge is to build more realistic models of how this timing process works, with constant, parallel input from throughout the brain." In such studies, the researchers face the daunting process of trying to monitor the intricate swirling of neural activity throughout the...

Scientists and engineers apply nature's design to human problems

...as interested in this process because it wanted to build autonomous devices with a similar capability, he explained. Then, earlier this year, Yen, Weissburg and Professor of Industrial and Systems Engineering Craig Tovey studied with Bioneer and biomimicry expert Janine Benyus for 10 days in Costa Rica. ...

Emerald Spectre haunts Ontario's ash forests

...d shows that if you get them early and before they build up large populations you can probably extinguish colonizing groups," says Dr. MacIsaac, whose research is primarily on freshwater and marine invasive species. Scientists believe the borer probably entered North America in ash shipping materials, and ...

California computer scientists double volume of data in NIH biotech repository

...24 hours, NCBI can make it an integral part of the build cycle for dbSNP," said NCBI's Stephen Sherry. "Every time there is a new release of polymorphism and human variation information in our database, our colleagues in California will be able to re-compute the haplotypes and tag SNPs." To underscore that...

U-M scientists say fused genes trigger the development of prostate cancer

...24 hours, NCBI can make it an integral part of the build cycle for dbSNP," said NCBI's Stephen Sherry. "Every time there is a new release of polymorphism and human variation information in our database, our colleagues in California will be able to re-compute the haplotypes and tag SNPs." To underscore that...

DNA size a crucial factor in genetic mutations, study finds

...nds and splits. Either strand is now a template to build a new DNA molecule. An enzyme-a protein that speeds the reaction, in this case the bacteria E. coli's DNA polymerase I-moves along the template and selects the corresponding base to create a new base pair. DNA bases fit into a specialized site on th...

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