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Tag: "propose" at biology news

Want to save polar bears? Follow the ice

...ake of the U.S. government’s watershed decision to propose listing the polar bear as "Threatened" under the Endangered Species Act, the Wildlife Conservation Society (WCS) is launching a bold initiative to save the Earth’s largest terrestrial predator, not by following the bears themselves, but the receding ...

Lessons from the orangutans: Upright walking may have begun in the trees

...s gaps between trees," said Thorpe. The authors propose an evolutionary scenario that begins as other researchers have envisioned. Somewhere toward the end of the Miocene epoch (24 to 5 million years ago), climate in East and Central Africa became alternately wetter and drier, and the rainforest grew incr...

DOE JGI sets 'gold standard' for metagenomic data analysis

...e proven satisfactory, Mavrommatis said. "What we propose in the paper is a way to evaluate the appropriateness and accuracy of the binning methods using the same datasets in order to set a gold standard, we have designed the reference-simulated metagenome." Through the Nature Methods publication, Mavro...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...Blomberg of the Noise Pollution Clearinghouse will propose 10 ways to reduce noise in natural parks. For exa...te of current knowledge on this question, and will propose specific ideas for helping to resolve this issue (4pMU5). Scientist and instrument-maker Richard Sm...

Gene thought to assist chemo may help cancer thrive

...ake a comeback,?he said. "Based on our results, we propose that p53 may help repair some of the cancer cells damaged by chemotherapy leading to tumor recurrence and explaining the higher mortality rate of patients whose tumors had a functioning p53. If we are correct, inhibiting p53 in tumors being treated w...

Tracking sperm whales and jumbo squid

...perm whales waiting below, according to Gilly. "We propose that jumbo squid are more susceptible to predation while they are recovering at depth immediately after a deep nighttime dive," he explained. In previous studies, Gilly found that jumbo squid are well adapted to the low-oxygen environment in deepe...

New recommendations against a major opportunistic infection -- cryptococcosis

...ing serotype. In light of the results, the authors propose a modification in the therapeutic treatment of individuals suffering from cryptococcosis. Caused by a microscopic fungus, Cryptococcus neoformans, cryptococcosis affects immunosuppressed individuals, most of whom are infected by HIV, but who also su...

Saving endangered whales at no cost

...t of each lobster caught in Maine. The authors propose that if Maine restricted its lobster fishing season to 6 months and reduced the number of traps by a factor of ten, the more optimal fishing strategy--including decreased costs and improved total income--would allow greatly reduced risk to the remain...

Scientists find new genes for Crohn's disease

...s his or her susceptibility to the disease. "We propose that genetic variation in the ATG16L1 gene leads to alterations in how the body uses autophagy and therefore may result in increased persistence of [toxic] cellular and bacterial components. This may lead to an inappropriate immune activation and inc...

Stability of mRNA/DNA and DNA/DNA duplexes modulates mRNA transcription

...influences mRNA level remains unclear. The authors propose two models, but further work is needed to understand how thermodynamic stability modulates mRNA level. ...

What recognizes what in plant disease resistance?

...gene resistance. Contrary to current models, which propose that recognition of resistance genes occurs solely through their leucine-rich repeat domain, the authors show that association is mediated by a completely different region on N's Toll-interleukin-1 receptor homology domain, which is structurally simi...

Why is the heart heart-shaped?

...lity influence cardiac cell shape. The researchers propose that a balance of the cell’s internal forces (through contractility) with external forces (such as blood flow) is necessary to create the cell shapes that generate chamber curvatures. Disruption of this balance may underlie the aberrations observed i...

Conceptualizing a cyborg

...axons can transmit active electrical signals, they propose that the nervous-tissue interface - through the microchip - could detect and record real-time signals conducted down the nerve and stimulate the sensory signals back through the axons. In another study, Smith and colleagues showed that these stre...

CSHL research ties harmless viruses to cancer

...stability (CIN) and cancer. "If the model that we propose is correct, protecting the body against viruses, o...come cancerous. The model that the researchers propose suggests that the best hope for controlling cancer is its prevention. If viruses can cause CIN, iden...

How fish conquered the ocean

...homorph teleosts in the fossil record. The authors propose that the neo-functionalization of duplicated vitellogenin genes was a key event in the evolution and success of the acanthomorph teleosts in the oceanic environment. "This study is an exciting part of our research focus in Developmental Biology of...

How does your brain tell time?

...e ripples travel the more time has passed. "We propose that a similar process takes place in the brain that allows it to track time," he added. "Every time the brain processes a sensory event, such as a sound or flash of light, it triggers a cascade of reactions between brain cells and their connections...

Interaction between lymph and liver cells may affect immune response

...iver cells through LSEC fenestrations. The authors propose the term "trans-endothelial hepatocyte-lymphocyte interactions" (TEHLI) to describe these interactions. The discovery of TEHLI is the first demonstration by electron microscopy of the interaction between naïve T cells and liver cells in a living o...

NHGRI aims to make DNA sequencing faster, more cost effective

... diameter) for use as DNA sequence transducers and propose to detect an electrical, or ionic, signal from individual DNA molecules. The goal of this group is to fabricate nanoscale channels in which single molecules of DNA will pass between nano-electrodes that are less than 2 nanometers apart, to measure an...

Researchers to develop active nanoscale surfaces for biological separations

..., shining light, or applying an electric field, we propose to change the behavior of the surfaces." In one approach, Kane and his colleagues are building a molecular obstacle course made up of nanoscale domains. When an electric field is applied at one end, DNA molecules will move across the surface and coll...

Regulating the nuclear architecture of the cell

...ll nuclei. This observation led Karpen and Peng to propose a specific mechanism by which H3K9 methylation and RNAi pathways regulate nuclear organization. When the H3K9 methylation pathway is functioning properly, heterochromatin remains condensed and a single nucleolus forms around the ribosomal DNA. Bu...

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