Tag: "solid" at biology news

DNA evidence suggests 3 types of elephants roam Africa

...t elephants in the dense vegetation, we don't have solid census data from many populations, including some of the largest ones," explains Eggert. "Only a quarter to a third of African elephants are forest elephants, so there are only about 120,000 to 150,000 of them. They live in a habitat that is rapidly ...

Personal body part grown in a dish

... more functions and, unlike the bladder, is also a solid organ. It consists of three main cylinders, encased in an outer layer of connective tissue, skin, blood vessels and nerves (see Graphic). The two biggest cylinders, made of spongy material that swells during an erection, are the corpora cavernosa. Th...

AAAS at the BA: Whale food, winners and losers in Antarctica and solar insights

...osite thing. They drive the fluid system away from solid rotation. This is sometimes called "negative friction", or "anti-friction". It is intimately part of today's understanding of the ozone hole, and of how global circulation patterns move greenhouse gases around the Earth and into polar regions.McIntyr...

Awards of the Netherlands greatest prize for science

...7) is situated at the interface between optics and solid state physics. He carries out research into how light beams travel through materials, and especially those materials which make the propagation of light waves extremely difficult, such as paint. In 1985 he discovered the phenomenon of increased back-...

Cloning pigs and drug discovery among 'hot' topics

...d all drug-free tolerance regimens--especially for solid organ recipients--to increasingly higher standards of long-term efficacy, safety and logistical feasibility," he told congress participants. Genomics, the science of identifying and processing DNA sequences, will play an increasingly important role...

Islet cell transplantation for diabetes turns corner

...rs that transplant the entire pancreas. But unlike solid organ transplantation, for every patient needing an islet cell transplant, two donor organs generally are required because one organ alone usually cannot provide a sufficient number of cells for successful engraftment in the patient. Preliminary resu...

Scientists use alfalfa plants to harvest nanoparticles of gold

...s Some processes for making high concentrations of solid nanoparticles use chemistry. However, many of the chemical methods used are cumbersome and lead to poisonous end products that could endanger public health. A better method is needed. Ordinary plants, acting as tiny factories, may provide a better...

Guns, bats, and cash

...e water they drink to the air they breathe, but no solid evidence has been linked to the disorders. Earlier studies that showed the toxins of the cycad plant caused neurological disorders. The Chamorros knew of the plant's toxicity as well. Although they ate part of the cycad in the form of flour in to...

Normal gene control increases chances human stem cells will be safe

... researchers have what is believed to be the first solid evidence that genes in human pluripotent stem cells and their progeny work normally. The focus of the new study, conducted in the lab of Andrew Feinberg, M.D., was whether Hopkins-developed human embryonic germ cells and their more specialized "daugh...

Large brains not required? Third and smallest skull of 'first Eurasians' reported in Science

...ne are unusually well-preserved, in part because a solid limestone layer overhead protected them against the usual compaction that occurs over time in sedimentary rocks. Along with the hominid fossils, the Science authors found remains of ancient species of rhinoceros, deer, wolf, horse, and saber-toothe...

Efficient plastic nuggets key to agricultural plastic waste disposal

...tional approach is to convert the various film and solid plastics into a plastic nugget that can be burned with coal in coal fired boilers, refuse-derived fuel burners and even cement kilns. The process can mix plastic types, because it does not melt the plastic. Only the outer portion of the nugget is f...

Frozen 'lake' beneath Antarctica ideal to test sterile drilling techniques

...he kinds of exotic microbes that might live inside solid ice, either as dormant spores or at a low level of... ice. In fact, he will present a poster on life in solid ice at the Bioastronomy 2002 meeting in Australia during the week of July 8. Such creatures would no...

Bacterial quorum-sensing structure solved

...ch are mats of immobile bacterial cells stuck to a solid surface. Biofilms are ubiquitous in nature and can be harmful in some cases and beneficial in others. A deeper understanding of signaling could improve our ability to intervene in these and other processes." He notes that one kind of bacterial biofil...

Scientists get no-strings awards for biodiversity leadership

...organizations. Elder supplies these audiences with solid research (some of it based on public opinion polling), innovative ideas, and tested strategies with which environmental advocates may reach their many constituencies. Judy Logback works to protect not only plant and animal biodiversity, but also th...

Physics tip sheet #18 June 19, 2002

...blem for nanodevices, which could effectively weld solid from the effect. However, new calculations show that the Casimir effect still holds surprises and that some common techniques for predicting the effects of these vacuum forces not only get the size of the force wrong but also the direction - sometime...

New device removes drinking water contaminants

...move them from place to place, from the water to a solid resin to a nasty brine that still contains the contaminants. Our simple method, which destroys the contaminant, should work for almost every oxidized pollutant, which means it has an incredible range of applications, including being used on more than...

Bandage could repair damaged tissues

...ll-O salad -- it's made from gelatin, turns into a solid and has stuff suspended in it. But, instead of con... Kao's substance turns into a flexible, degradable solid when exposed to ultraviolet light. Because it's highly porous, the bandage can also absorb excess fl...

'Trojan horse' technology destroys blood supply to cancer tumors in mice

... selectively destroy blood vessels supplying human solid tumors without harming the vasculature of normal t...se' approach to kill the blood vessels that supply solid tumors. We're using the vascular endothelial growth factor (VEGF) as a carrier to deliver a toxic ag...

Promising new therapies for deadly form of leukemia

...ical trials as an inhibitor of specific kinases in solid tumors," said Gilliland. "However, in Novartis' tests it had very modest activity, so they had not planned further development of the drug." After Griffin's team showed that PKC412 could inhibit FLT3, Gilliland and his colleagues tested the drug in ...

Obesity...by choice

...ts were given a choice between separate sources of solid carbohydrate (CHOW), fat, and protein, but in addition to these standard choices of nutrients, some rats received three extra cups of each. The experiment was terminated after eight days because four of seven rats given extra cups of carbohydrates...

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