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Tag: "natural" at biology news

Microfossils unravel climate history of tropical Africa

...nforest. These findings provide further insight in natural variations in climate and the possible consequence...st. These results provide further insight into the natural variation of climate and the possible consequences of a warming earth on precipitation in central Af...

Lower carbon dioxide emissions from coal-fueled power plants possible with technology development

...to remove hydrogen sulfide and carbon dioxide from natural gas. Rochelle will share one third of the TXU funds with other colleagues in the university’s College of Engineering and in the Jackson School of Geosciences. These colleagues will help test how well the process works and evaluate an option for s...

Meat and two neutrons -- the key to a longer life

...e shown for the first time that food enriched with natural isotopes builds bodily components that are more re...sity, fed nematode worms nutrients reinforced with natural isotopes (naturally occurring atomic variations of elements). In initial experiments, worms' life sp...

Targeting tumors the natural way

...ical Society, cleverly harnesses one of the body's natural antibodies and immune responses. "The killing agen...that caused immediate organ rejection. But true to natural cell recognition, the immune response occurs only when clusters of many alpha-Gal molecules are pres...

Organic is healthier: Kiwis prove that green is good

...gher antioxidant activity which is thought to be a natural by-product of stress. However, some people are still unsure about the potential benefits of antioxidants and other compounds elevated in organic farm produce. Carl Winter, director of the FoodSafe Program at UC Davies, asks whether these increase...

Research to spotlight carbon monoxide benefits

...pproach to the design of these molecules using the natural interface between organic and inorganic chemistry." The project will examine the physical and electronic characteristics of potentially suitable compounds and identify those which are absorbed best by the body with the aim of starting clinical stu...

Honeydew honeys are better antioxidants than nectar honeys

...and this generates honeydew honeys. “Honey is a natural source of antioxidants, and among honeys, honeydew honey is the best,?says researcher Rosa Ana Pérez, who works at the Instituto Madrileño de Investigación y Desarrollo Rural, Agrario y Alimentario, in Madrid, Spain. Each of the 36 honeys was expo...

Hay fever can send work productivity down the drain

...drugs, such as steroids that help block the body's natural reaction to allergens,?she continued. Participants who self-managed their allergies relied on over-the-counter products to control their milder symptoms. A lack of sleep and a decrease in quality of life had the greatest impact on a person's abili...

Scientists identify specific enzymes that make meningitis hard to fight

...cess that enables the bacteria to elude the body's natural defences could eventually help scientists develop ...ingitis bacteria enter the bloodstream, the body's natural defences send white blood cells to fight the infection. They ingest the bacteria and subject them to...

Multiple malaria infection inhibits spread of parasite

...in areas where malaria is prevalent, can develop a natural immunity that stops the development of the parasite in the mosquito. This prevents the parasite from spreading further. The presence of this immunity, the so-called transmission-reducing activity, is determined using a laboratory test. Van der Kolk d...

Study finds mercury prevalent in many western fish

...ring the water via the atmosphere has a variety of natural and manmade sources, the researchers say, including coal power plants from as far away as China, the burning of heavy oils and other fossil fuels, and even forest fires. In the survey, the researchers did find 13 fish from eight different sites th...

Magnetic system could be key to surgery without scars

...lem of guiding instruments through the abdomen for natural orifice surgery, which now inserts the instruments through the throat, colon or vagina. “The current state of the art for laparoscopic surgery requires four or five holes. The question behind this is, can we do the surgery through only one hole an...

New culture method for hepatitis C virus uses primary hepatocytes and patient serum

...clinical HCV infection, possibly due to the host's natural defenses. Interestingly, cultured hepatocytes res...HCV replication in nontransformed hepatocytes, the natural target of the virus. By allowing infection by patient serum containing a wide array of virus strains...

Circumcision: A proven strategy to prevent HIV

... risky behavior. "Circumcision is by no means a natural condom," said Bailey. "We do know that some circumcised men become infected with HIV. But we did find that the circumcised men in our study did not increase their risk behaviors after circumcision. In fact, all men in the trial increased their condom...

Engineering the heart piece by piece

...ng-lasting and structured at a cellular level like natural tissue. The new article reviews the current state of cardiac tissue engineering, both at the U-M Cardiac Surgery Artificial Heart Laboratory and in labs worldwide. “Tissue engineering is a rapidly evolving field, and cardiovascular tissue is ...

Fish can determine their social rank by observation alone, study finds

...ds), small territorial fish from Africa. "In their natural habitat, male cichlids are constantly trying to ascend socially by beating each other up," said study co-author Russell D. Fernald, professor of biological sciences at Stanford. "It would be really valuable for them to know in advance who to pick a f...

Plants do not emit methane

...ethane emission was measured under controlled, but natural conditions with a photo-acoustic laser technique. This technique is so sensitive that the scientists are able to measure the carbon dioxide in the breath of small insects like ants. Even with this state-of-the-art technique, the measured emission rat...

Swimming 'to the left' gets bacteria upstream, and may promote infection

...s. To our knowledge, this is the first time that a natural propensity to swim upstream has been discovered and described in bacteria." To study the hydrodynamics of these bacteria in a flow environment, Köser's team constructed microfluidic devices using soft lithography. Inside the devices they set up...

Cancer scientists create 'human' leukemia process to map how disease begins, progresses

...th the method we developed, we have duplicated the natural process every step of the way. The method we developed opens the pathway generally to understanding the process of how cancer begins." The scientific team of Frederic Barabe, James Kennedy and Kristin Hope introduced a specific leukemia gene in...

Nanoparticles for delivery of prostate cancer treatment

... binds to TF more strongly and specifically than a natural antibody. Because the Icon acts through the blood, it can reach metastatic tumors throughout the body, which is critical for effective cancer therapy. With the Prostate Foundation funding Garen will test the efficacy and safety of using targeted l...

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