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Tag: "nitrogen" at biology news

New findings blow a decade of assumptions out of the water

...c and Indian oceans experience twice the amount of nitrogen fixing as the Atlantic, say researchers in the Jan... It's important to have a global picture of where nitrogen fixation is occurring ?that is where nitrogen gas is being converted into substances like nitrate th...

New mechanism for nutrient uptake discovered

...s, identified the genes responsible for initiating nitrogen uptake in plants. That identification has helped o... ammonium transport is regulated. Plants import nitrogen in the form of ammonium from the soil. The researchers found that the end portion, or so-called C-te...

Progress toward artificial photosynthesis?

...important intermediate step: the bonding of CO2 to nitrogen atoms to form carbamates. The German researchers t...ayers consist of ring systems involving carbon and nitrogen atoms. This porous material, called graphitic carbon nitride, is very heat-stable and, although it e...

Soft-cell approach cuts animal tests

...ndustrial contaminant linked to human cancer; nitrogen dioxide, a lung irritant that causes inflammation, pulmonary oedema, and pneumonia; fire combustion products, including cyanide, hydrogen sulphide, and ammonia; and, the volatile organic compounds (VOCs) xylene and toluene, found in solvents ...

Biodiesel study targets cleaner air, cleaner engines

...e trial sites, including levels of carbon dioxide, nitrogen oxides and particulate matter. Although commercially available, biodiesel has never been tested on agricultural machinery in Canada and has not yet been widely used by farmers. It is hoped the research results ?expected in early May ?will help in...

Cure for cancer one step closer

...researchers around the world, and two vapour phase nitrogen storage vessels (-196ºC) and two -80ºC freezers which have the capacity to house in excess of 164,000 tissue and blood samples. The small sections of tissue collected from patients will be stored in cryogenic vials which will help preserve the tis...

Fish extinctions alter critical nutrients in water, study shows

...ish to cycle back into the water such nutrients as nitrogen and phosphorus, which are otherwise locked up in a... in nutrient recycling left by an extinct species, nitrogen and phosphorus were maintained at 80 percent of their starting values until over half the total numb...

Scientists: As rainfall changes, tropical plants may acclimate

...nts largely rely on one form of the vital nutrient nitrogen in moist areas. But in the still wetter terrain th...s some rainforests, they switch to another form of nitrogen that becomes more available in those conditions. The findings, reported in paper set to appear th...

An 'elegant' idea proves its worth 25 years later

...te disposal" chemistry to mop up potentially toxic nitrogen has saved an estimated 80 percent of patients with...ate, two chemicals the body already makes to carry nitrogen for disposal in urine "just knocked my socks off from the moment we first tried them," recalls Saul ...

Ice Age extinction claimed highly carnivorous Alaskan wolves

...s of the bones back up this conclusion. Carbon and nitrogen isotope values of the Alaskan wolf bones are intermediate between those of potential prey species—mammoth, bison, musk ox and caribou—suggesting that their diet was a mix of these large species. The cause of Pleistocene extinction (called the “...

Microbes at work cleaning up the environment

...hwestern Wisconsin. The team found that organic nitrogen was highly concentrated in all of the zinc-sulfide aggregates, indicating a high protein or polypeptide content relative to inorganic zinc-sulfide minerals. In combination with the other techniques and experiments, the team concluded that the protein...

Breakthrough developments in rheumatoid arthritis reported

...s in proteins. When one of the enzymes is present, nitrogen is removed from the chemical structure of arginine and it converts into citrulline. Laboratories have developed a test to measure for anti-cyclic citrullinated peptide antibody, or anti-CCP. It is now being used as a diagnostic for rheumatoid a...

Studies to find better ways to preserve human eggs, ovarian tissue under way

...elsius over two- and one-half hours. Later, liquid nitrogen takes it to minus 196 degrees “You put it in a control-rate freezer that takes down the temperature one degree centigrade per minute so it drops the temperature very, very slowly,” says Dr. Song. Slow cooling works well for simple tissue, such...

Pesticides choke pathway for nature to produce nitrogen for crops

...eans require such interaction to naturally replace nitrogen levels that, in turn, benefit primary market crops... which work with the plants to convert atmospheric nitrogen into ammonia that, then, is used as fertilizer by the plants. "Agrichemicals are blocking the hos...

A new plant-bacterial symbiotic mechanism promising for crop applications

...s depends on the presence of sufficient amounts of nitrogen contained in the soil. However, a family of plants...acteria of the Rhizobium, genus, capable of fixing nitrogen from the air. When these bacteria come into contact with their host plant, they trigger in the roots...

Soils offer new hope as carbon sink

...ge increase remained the same when applications of nitrogen fertiliser were added to both the agrichar and the... alone was about as beneficial for yields as using nitrogen fertiliser only. "And that is without considering the other benefits of agrichar." Regarding soi...

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