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Tag: "harvested" at biology news

Logging doubles threat to the Amazon, rivaling clear-cutting, study suggests

...one in the same study period. The total volume of harvested trees represents roughly 10 to 15 million metric tons of carbon removed from the ecosystem, according to the authors. They estimate that this amount represents a 25 percent increase in the overall flow of carbon from the Amazonian forest to the atmos...

Restaurant seafood prices since 1850s help plot marine harvests through history

... in 1910 as stocks collapsed. Professional hunters harvested up to 1,000 per day to supply restaurants, says Dr. Jones, fostering the federal government's decision to outlaw the commercial slaughter of migratory birds in 1913. "As supplies dropped and prices rose, some of these species became a status symbol....

Bone marrow stem cells may heal hearts even years after heart attacks

...ths or years after a heart attack. The researchers harvested bone marrow from the hip bones of the patients, so there was no threat of transplant rejection. After processing, stem cells from the marrow were infused through a catheter into the coronary artery where the patient's heart attack occurred. "The mai...

Research team receives $7.5 million to study cassava

... the root's nutritional value, its shelf life once harvested (cassava roots deteriorate in about two days unless they are properly processed after harvesting) and its resistance to geminivirus, a particularly devastating plant virus that can destroy up to 60 percent of a cassava crop. A cassava plant usually ...

Researchers find ways to turn manure into power

...r testing at several labs. The manure samples were harvested May 17-June 2 from two types of pens. One set of pens were paved with fly-ash, a byproduct of the coal-fired power generating industry, and the other manure was from unpaved pens. The manure was composted and test results from the two showed a large...

Fish and chips: A fast track to understanding blood development

...e. But there are often not enough blood stem cells harvested from a single collection of umbilical cord blood to effectively treat adults and older children. This research provides insight into understanding how to stimulate blood stem cells to multiply so that scientists could generate enough cells from a sin...

Stem cells bring fast direct improvement, without differentiation, in acute renal failure

...several reasons, notably the fact that they can be harvested easily from bone marrow, isolated, grown in culture and genetically engineered. To test that MSC subsequently used in these studies retained their phenotype after being cultured, the researchers routinely tested whether their characteristic potential...

Mayan stingless bee keeping: Going, going, gone?

...Apis mellifera) to the Americas, Mayan bee keepers harvested honey from the log nests of stingless bees native ... for bee keepers. In the Mayan tradition, a priest harvested stingless bee honey as part of a religious ceremony twice a year. Over harvesting kills the colony. ...

Structures of marine toxins provide insight into their effectiveness as cancer drugs

...e the toxins to be synthesized in a lab instead of harvested from the depths of the ocean floor, meaning that the drugs can be engineered to be as effective as possible. "In order to chemically synthesize a better drug, it is a good idea to know how the natural compound works," he says. "Scientists who study...

Hybrid grass may prove to be valuable fuel source

... leaving behind tall bamboo-like stems that can be harvested in early spring and burned for fuel. Rhizomatous grasses such as Miscanthus are very clean fuels, said Dohleman, who is studying for a doctorate in plant biology. Nutrients such as nitrogen are transferred to the rhizome to be saved until the next g...

Gifts from the sea

...tile from May to July, and millions of eggs can be harvested from a single female. By inducing the clam eggs to undergo cell division at the same time, scientists can study millions of cells in the same stage of division. Clam eggs are also transparent, providing a perfect window on biology in action. MBL scie...

Breakthrough: Scientists create world's tiniest organic particles

...particles together rather than allowing them to be harvested independent of one another."This is in contrast to traditional imprint lithography with silicon, glass or quartz molds where it is difficult to eliminate this residual material between objects," DeSimone said. Particles injected into the body can be...

Scripps research scientists identify infertility molecule

...rmones to stimulate ovulation to having their eggs harvested by doctors, fertilized by their partner's sperm outside their bodies, and finally having the early embryos implanted directly into their wombs (the technique of in vitro fertilization). Despite the existence of these therapies, however, the molecula...

New method shows it is possible to grow bone for grafts within a patient's body

...h as a post-doctoral fellow at MIT, "and since the harvested bone is fresh it integrates really well at a recipient site." Long bones in the body are covered by a thin outer layer called the periosteum. The layer is a little like scotch tape: the outside is tough and fibrous but the inside is covered with a l...

Researchers develop promising new gene network analysis method

...ne batch of cells was treated with tamoxifen, then harvested one, two, four, eight and 16 hours later. Another batch of cells didn't get the drug but were harvested during the same time frame. Analysis of gene activity generated in the experiments revealed 1,191 p...

Stem cell therapy successfully treats heart attack in animals

...nfarction, in pigs. In just two months, stem cells harvested from another pig's bone marrow and injected into the animal's damaged heart restored heart function and repaired damaged heart muscle by 50 percent to 75 percent. The Hopkins findings, first presented last fall at the 2004 Scientific Sessions of the...

Bacterial genome sheds light on synthesizing cancer-fighting compounds

...of relief, as they no longer run the risk of being harvested for their natural disease-fighting substances. Scientists recently discovered that the bacterium Prochloron didemnii, which lives symbiotically inside the sea squirt, actually produces the desired patellamides, compounds that may one day be used in c...

Studies reveal how plague disables immune system, and how to exploit the process to make a vaccine

... mice with Y. pestis. Two to three days later they harvested cells from organs where the bacteria tend to cluster. They used a dye to stain those cells green. When Y. pestis attacks a cell it uses the type-III pathway -- a needle-like projection -- to inject various toxins into the cell, killing it. The resea...

Key to elephant conservation is 'in the sauce'

...s buffer crops to prevent crop-raiding and then be harvested and sold on the world market through the trust." Osborn originated the idea of Elephant Pepper in 1997, when he found that chilli peppers could be used as a means of stopping elephants from destroying crops in the Zambezi Valley, which straddles the...

Precise Timing Enabled Pig-to-rat Transplants To Cure Diabetes

...Sharon A. Rogers, research instructor in medicine, harvested the embryonic pig tissues at precisely the right point in their development. "When we again harvested the transplant tissues 28 days after fertilization, it reproduced our earlier results, but if we mov...

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