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Tag: "mineral" at biology news

Researchers find 24 species believed new to science in Suriname rainforest

...ed to conserve them. The study sponsored by two mineral companies – BHP Billiton Maatschappij Suriname (BMS, a subsidiary of BHP Billiton) and Suriname Aluminium Company LLC (Suralco, a subsidiary of Alcoa Inc.) – provides information for policymakers and other stakeholders in deciding how to balance deve...

Plants recognize their siblings, biologists discover

...ng more roots, which allows them to grab water and mineral nutrients before their neighbours get them. It appears, though, that they only do this when sharing a pot with unrelated plants; when they share a pot with family they don’t increase their root growth. Because differences between groups of strangers ...

In nature, proteins sweep up nanoparticles

...illed the gaps between them. “We found that the mineral aggregates, which are produced as a consequence of microbial activity, actually contain a lot of protein,” says Banfield. “This is very interesting because biomineralization has traditionally been thought of as a phenomenon that occurs within a cell,...

NIH researchers discover protein that appears to regulate bone mass loss, the cause of osteoporosis

...e, which is characterized by a severe loss of bone mineral density, fragile bones and an increased risk of hi...nd osteoporosis involves an imbalance between bone mineral formation and loss, but the detailed biological processes that lead to this imbalance are not comple...

Vitamins: Science doesn't always match policy

...on include the content and labeling of vitamin and mineral supplements and the effects of these products on nutrient adequacy as well as in chronic degenerative disease prevention. In this quest, the development of more and better surrogate markers of adverse effects will be critical. Dose-response assessmen...

New mechanism for nutrient uptake discovered

...ons. This is a major advance in the field of plant mineral nutrition." ...

Researchers urge monitoring of bone health during chemotherapy

... breast and prostate cancer also can decrease bone mineral density. We would like to see clinical trials instigated to study the effects of such cancer therapies on bone health and tumor metastasis." ...

Scientists identify a candidate gene for osteoporosis

...cts 55% of Americans over the age of 50. Low bone mineral density (BMD)—the primary indicator of osteoporosis—is influenced by both genetic and environmental factors (e.g., diet or medication). But the genetic element has been difficult to characterize because bone growth is controlled by many genes, inclu...

ASU researchers test antibacterial effects of healing clays

...years to Williams and Haydel for the study of clay mineral alternative treatment for Buruli ulcer. What makes...areer fascination with clay started when she was a mineral exploration geologist looking for ore deposits. She worked with 'the father of clay mineralogy,' Bob...

Scientists crack rhino horn riddle

...leness Memorial Hospital in Athens and found dense mineral deposits made of calcium and melanin in the middle. The calcium deposits make the horn core harder and stronger, and the melanin protects the core from breakdown by the sun's UV rays, the scientists report. The softer outer portion of the horn we...

Bones at the nanoscale

...otein called collagen and the other half a brittle mineral phase called apatite. These com-ponents make this ...n a fifth of the strain is actually noticed in the mineral phase. The soft structures form a single rigid unit at the next level and so on, enabling the tissue...

Selecting life: Scientists find new way to search for origin of life

...the last half century, researchers have found that mineral surfaces may have played critical roles organizing...ountless possible combinations of biomolecules and mineral surfaces were key to this evolution? This vexing question has stumped scientists for years because o...

Ancient ape ruled out of man's ancestral line

...istant cousin. His remains are cemented in hard mineral deposits in the Sterkfontein cave complex which has yielded a number of other ancient finds. It is thought he either fell down a shaft or somehow got trapped in the cave and died there to be covered by the sediment layers from which he is now being s...

Particle size matters to bacteria ability to immobilize heavy metals

...ll and the particles to determine the influence of mineral size on microbial reduction rates at the nanoscale. The researchers are looking at microbial reduction of nano hematite, which Bose synthesized in the lab and characterized. "Nano particles of iron oxides are present everywhere and, due to their s...

Poor athletic performance linked to vitamin deficiency

...restricted diets consider taking a multivitamin or mineral supplement....

Biofuel cells without the bio cells

...show that you can directly transfer electrons to a mineral using a purified protein, and I don't think anyone..., or OmcA, formed a dense coating on the iron-rich mineral hematite. The metal in the mineral acts as an "acceptor," or dumping point, for thousands of trillio...

Oldest animal fossils may have been bacteria

...showed that the bacterium promotes deposition of a mineral known as phosphorite. The fossils identified as ... is rich in phosphorite. The source for the rare mineral was unknown. Bailey wondered if an ancient relative of Thiomargarita might have been involved. "Th...

Gene therapy prevents the onset of diabetic symptoms in mice

...e) watersheds. On one 25-acre site, a calcium-rich mineral called wollastonite was spread in pellet form by helicopter in October 1999. The other site served as a control. While the pellets dissolve slowly over five to 10 years, the researchers were surprised to find that by summer 2002, the soil acidity i...

Acid rain causing decline in sugar maples, say researchers

...e) watersheds. On one 25-acre site, a calcium-rich mineral called wollastonite was spread in pellet form by helicopter in October 1999. The other site served as a control. While the pellets dissolve slowly over five to 10 years, the researchers were surprised to find that by summer 2002, the soil acidity i...

Surprising symbiosis: Glassy-winged sharpshooter eats with friends

Like a celebrity living on mineral water, the glassy-winged sharpshooter consumes only the dilute sap of woody plants--including grapevines in California, which is feverishly working to prevent the insect's flight into prized vineyards. Now, in a surprising study published in the Ju...

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