face 2 8

Tag: "face" at biology news

Birth rate, competition are major players in hominid extinctions

...th new technology to overcome the problems we will face from the global climate change we have created? ...er. "But both require forethought and planning to face the demographic and climate change. A degree of honesty, our species is not known for." ...

Rewarding fat rats

... all remember a time when we were paralyzed in the face of a tough decision. For animals in the natural world, making the right choice can mean the difference between life and death. When rats and other animals choose the thing that leads to a "reward," such as food, changes happen in the body and the b...

Researchers first to map gene that regulates adult stem cell growth

...tients." One big obstacle chemotherapy patients face is stem cell loss after treatments. This limits the dosage amount and types of chemotherapy that can be given. But if Latexin were used to increase the stem cell count, patients would be able to receive increased doses of chemotherapy and be able to ...

A case of mistaken identity for the ivory-billed woodpecker?

...fforts in SE USA's bottomland swamp forests, which face continuing development. Furthermore, it spurred renewed efforts, in Florida and elsewhere, to find the Ivory-billed Woodpecker and determine its status in the USA....

University of Alberta researchers unravel intricate animal patterns

...the signals received from those con-specifics that face towards this individual," said Eftimie. "Based on these observations, we come up with some simple rules that can describe the different ways animals communicate. Then we incorporate these rules into the mathematical model, and check what kind of move...

Secret of worm's poison pill box protein could produce new natural insecticide

...the poison complex from the acid attack they would face from the high pH values in the insect gut. The researchers also discovered that, while XptA1 was highly selective in that it bound to the cabbage white butterfly caterpillar, there were variants of this family of toxic proteins (such as XptA2) that...

Africa's first large-scale HIV vaccine study launches

...l will answer several major scientific issues that face all of us in the field of HIV-vaccine development," said Lawrence Corey, M.D., principal investigator of the HVTN and a member of the Hutchinson Center's Clinical Research Division. "It will determine the usefulness of vaccines that induce high immun...

The penalty of having a sister -- why sibling sex matters for male saiga antelopes

...rth weight. Saiga males mate with many females and face strong male-male competition during short mating seasons. This means that size matters for males - being smaller than average is one of the major limiting factors for reproductive success. Aline Kühl from Imperial College London's Division of Bi...

Fascinating spider silk

...and spokes of their webs and to rappel away in the face of danger is made of two different proteins. The Munich team has now successfully used genetic engineering to produce one of the spider silk proteins of the European garden spider (Araneus daidematus). While purifying the protein by dialysis, the res...

Study shows isolation of stem cells may lead to a treatment for hearing loss

...ot replaced and people exposed to these conditions face permanent hearing loss. Identification of the stem cells from the adult cochlea would be a major step forward to develop new therapeutic approaches to hearing loss. Members of the National Center for Regenerative Medicine research team, Dr. Robert M...

Allergy to hair dye increasing

...is week's BMJ. This can lead to dermatitis on the face and, in severe cases, facial swelling may occur. More than two thirds of hair dyes currently contain para-phenylenediamine (PPD) and other related agents. During the 20th century, allergic reactions to PPD became such a serious problem that it was...

Rapid response was crucial to containing the 1918 flu pandemic

.... Seattle’s mayor ordered his constituents to wear face masks. The first study found a clear correlation between the number of interventions applied and the resulting peak death rate seen. Perhaps more importantly, both studies showed that while interventions effectively mitigated the transmission of infl...

Bones in motion: Brown scientists to create new 3-D X-ray system

... tracing the disappearance of digits in pigs would face a difficult task. To see the exact position and movement of bones and the ligaments, tendons and cartilage that surround them, would require cutting into flesh ?not a desirable option. The new system, dubbed CTX, will combine the 3-D capability of...

Man's best friend lends insight into human evolution

... chimpanzees utilize social cues like eye gaze and face orientation to monitor others' behavior or infer motives of other subordinate or dominant individuals, or even deceive them, when competing for food. But it turns out that chimps are not very good at drawing inferences about others' mental states in ...

Thymus transplants gives hope to babies with fatal immune disease

...em, gets to experience what other children her age face -- standard childhood immunization shots. ...

HIV survival improves if patients stay in care

...other things going on. They are young. Often, they face challenges of substance abuse, mental health problems and financial issues. Now they have to stay in care the rest of their lives, which may be 20, 30, 40 or more years." Giordano's study, carried out in the Veterans Affairs population, determined...

Diminishing dinosaur steps saved by laser and laptop

... have produced an interactive 3D model of a quarry face covered in thousands of tracks made by the late Cretaceous dinosaurs, including sauropods and possibly predatory theropod dinosaurs. The portable system, which is powered by a battery, works by rotating and firing laser beams, which reflect off th...

Premature births may be linked to seasonal levels of pesticides and nitrates in surface water

...efects, and preterm births, and I think we need to face up to environmental causes," said Dr Winchester, who is also director of Newborn Intensive Care Services at St. Francis Hospital in Indianapolis. "Preterm births in the United States vary month to month in a recurrent and seasonal manner. Pesticid...

Global survey of lizards reveals greater abundance of animals on islands than on mainland ecosystems

...ds are likely to become more common as the islands face increasing pressures from population growth, tourism, development, and climate change,?says Jetz. “The consequences of island vulnerability have already been observed as island species account for half of known animal extinctions and a full 90 perce...

Amphibians in losing race with environmental change

...e of environmental changes than other species must face ?they have permeable skin, live on both land and water, their eggs have no shells. In the face of these challenges, amphibians appear to be losing the battle ?of 5,743 known species of amphibians...

1 2 3 4 5 6 7 8 9