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Tag: "short" at biology news

A hope for oil spill bioremediation

...adable to a great extent, especially components as short linear alkanes or simple aromatic hydrocarbons. However, the heavy fraction, made of long-chain saturated and polyaromatic hydrocarbons and a considerable fraction of asphaltenes and resins, is generally recalcitrant to degradation. The team's goal ...

A probe, not an echo

...dependent. The HUTT system transmits an extremely short ultrasonic pulse (about 250 nanosecond) of 4-12 megahertz frequency (far above human hearing) and picks up the pulse on the other side after it has traveled through the imaged object. The transmitted pulses come from an array of very small ultrasoni...

Innovative coating could give medical implants a longer life

...r made up of two parts, both playing a key role: a short peptide that is the synthetic version of the sticky dihydroxyphenylalanine (DOPA) molecule that gives mussels their adhesive or anchoring strength and a longer peptoid polymer resembling the structure of polyethylene glycol (PEG), a widely studied an...

U. Iowa researchers improve Huntington's disease symptoms in mice

... RNAi improve HD-like symptoms in a mouse model in short order? "Since our results are positive, we can now repeat the experiment in mouse models that develop disease more slowly and more closely resemble HD in humans," Davidson said. Most genes are inherited as a pair, one from either parent. In HD, one...

Second messenger NAADP shows fast, dose-related impact on satiety cycle

...holecystokinin." Yamasaki noted that NAADP has "a short history compared to other traditional intracellular messengers and many aspects of this molecule remain under investigation. However the potential of this new messenger as a therapeutic target should not be underestimated," she added. ...

Mice brains shrink during winter, impairing some learning and memory

... study found. The results showed that, during the short days of winter, white-footed mice had impaired spa...ce. Using artificial light, some mice were kept in short days ?such as they would face in winter ?with eight hours of light per day for 13 weeks before the b...

Hopkins AIDS experts issue warning about global efforts to provide drug therapies

...ilemma is unavoidable because supply will fall far short of demand, despite the generous nature and growing scope of aid efforts." While President Bush's 2003 Emergency Plan for AIDS Relief is spending more than $600 million on antiretroviral therapies for 2 million people, demand in the developing world ...

Antiretroviral Therapy May Prevent HIV Transmission From Breastfeeding Mothers To Infants

...levels, the investigators hypothesized, may be the short duration of treatment in the study (a median of 98 days). Combination antiretroviral therapy may reduce HIV DNA in breast milk more slowly than HIV RNA, thus raising the risk that, when treatment duration is short, HIV DNA-associated transmission may...

Unique library of plant genes germinates, takes root at UNC

...r processing time, but it was condensed into a few short weeks by use of parallel computing, Vision said. Currently, scientists know the complete genetic makeup of only a handful of plants although humans are economically dependent on dozens of different ones, he said. It would be far too expensive and ti...

Cancer drug slows poxvirus in mice

...eople who otherwise could not take it. Given for a short period, Gleevec theoretically could hamper the cell-to-cell spread of virus and allow the body's immune system to mount a successful defense, he explains. Experiments to test whether Gleevec might work against smallpox virus as well as against vaccin...

Fragile US vaccine system needs improvement despite dramatic gains in health over past century

...ine-preventable diseases of childhood have been in short supply. As of 2004 only four commercial companies ...one of the major successes of medicine, the recent short supplies of childhood vaccines and the recent problems with influenza vaccine are a clear sign of th...

Depression gene may weaken mood-regulating circuit

...m each parent, which comes in two common versions: short and long. The short version makes less protein, resulting in less recycling, increased levels of serotonin in the synaps...

Proteomics brings researchers closer to understanding microbes that produce acid mine drainage

...isms, then determining at ORNL the masses of these short proteins, called peptides, with "shotgun" mass spectrometry. To identify the peptides from their masses, they turned back to the genomes. The genomes they obtained last year allowed them to predict the proteins in each member of the biofilm community...

Deep thinking: Scientists sequence a cold-loving marine microbe

...reserves of nitrogen and carbon, which could be in short supply in the extreme cold. The organism also engineers cold-hardy versions of ordinary enzymes found in free-living bacteria, such as enzymes that break down organic matter. C. psychrerythraea possesses genes that may break down complex compounds, i...

First production of human monoclonal antibodies in chicken eggs published in Nature Biotechnology

...ody identification to production in eggs can be as short as 8 months versus 18 months to 3 years for goats or cattle. The egg is sterile and stable, providing a good starting material for isolation and purification of the protein of interest. Moreover, conditions for good manufacturing practices have been ...

Understanding biases in epidemic models important when making public health predictions

... such models, for example, many people have a very short infectious period while a few have a very long infectious period. In reality, most people are infectious for an average period of time. For the flu the average infectious period is around 4-5 days, with incredibly few people infectious for less than ...

Inhaling large amounts of salt can cause hypertension

... such models, for example, many people have a very short infectious period while a few have a very long infectious period. In reality, most people are infectious for an average period of time. For the flu the average infectious period is around 4-5 days, with incredibly few people infectious for less than ...

Field of beams - Novel system uses polarized light pulses to reveal crop health

... such models, for example, many people have a very short infectious period while a few have a very long infectious period. In reality, most people are infectious for an average period of time. For the flu the average infectious period is around 4-5 days, with incredibly few people infectious for less than ...

New tool reveals secrets of migrating cells

...ton imaging is that if you hit a dye molecule in a short period of time with two photons of light, each pho...system they use employs an infrared laser emitting short intense pulses of 920 nanometer-wavelength light. In the thymus, it's possible to view cells 400 mi...

The genetic origins of corn on the cob

...e've shown that it acts by signaling cells to form short rather than long branches," says Martienssen, who was joined in the study by lead author Dr. Erik Vollbrecht, now at Iowa State University. Says Vollbrecht, "We solved this enduring puzzle by combining classical and modern molecular genetics. The fo...

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