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Tag: "salt" at biology news

Enzyme affects hypertension by controlling salt levels in body

...p explain why patients with hypertension linked to salt intake often need to take potassium supplements in...rine, said Dr. Huang, a nephrologist. However, if salt ingestion remains the same and the kidneys reabsorb 99.9 percent of salt, too much salt returns to t...

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

... sources such as the logs of schooner captains and salt tax collectors to reconstruct amazing and valuable insights into fishing and marine life decades and even centuries ago," says Jesse Ausubel, CoML project director for the New York-based Alfred P. Sloan Foundation. "The historical component of the C...

Fresh water affected by salt from deicing roads

...ing that occurs is increasing and gradually adding salt to fresh water systems reports Sujay Kaushal and c...s are going up, even in places where the amount of salt applied has not increased. Concentrations are high in the summer, not just in the winter when salt ...

Student scientists create living bacterial photographs

...tor up to a sensor in E. coli that normally senses salt concentration. Instead of sensing salt, the bacteria could sense light. The light receptor was then connected to a system in the bacteria that makes pigments. When light strikes the new receptor, it turns off a gene that ultimately controls the prod...

Life in deadly conditions

... environmental conditions, for instance under high salt concentrations, high pH-values, or high temperatur...line (pH-value of about 11) with an extremely high salt concentration (over 300 grams of salt per litre of water). The high pH-values are about the same as ...

Storing carbon to combat global warming may cause other environmental problems, study suggests

...ater rose to the surface to contaminate soils with salt after a heavy water-using eucalyptus forest was re...orestation could lower water tables and help leach salt from soils, predicted the authors. "Widespread conversion of croplands to forest in the central U.S....

Research: Snails were overlooked contributors to marsh destruction

...ess snails likely killed off thousands of acres of salt marsh in the Southeast in recent years. Periwinkl...Littoraria irrorata, normally coexist happily with salt marsh. But the drought, which lasted from 1999 to 2001, weakened and killed marsh grasses such as co...

Bacteria that cause tooth decay able to survive without important biochemical pathway

...a with other environmental stressors, such as high salt levels or the presence of hydrogen peroxide, also caused them to weaken, Hasona said. "So, at least in this organism, we learned the SRP pathway seems to enable it to respond rapidly to environmental stress, but it was not at all necessary for the o...

UCR environmental scientists propose chemical solution to cleaning California's Salton Sea

...esearchers investigated the use of alum, a type of salt that has been used to treat phosphorus-rich lakes ...rm a fragile structure, called a floc) and enhance salt removal. Used in wastewater treatment, it enhances coagulation and settling. The polymer acts as a c...

A salty tale: New bacterial genome sequenced from ancient salterns

... country's many saltwater lagoons, used to produce salt since Roman times. Scientists, too, admire these s...ing in such a physically demanding environment, at salt concentrations up to 30 percent. How could these microbes--which normally prefer milder environments...

Birth defects: 8 million annually worldwide

...tion to prevent neural tube defects; iodination of salt to prevent severe congenital hypothyroidism; and rubella immunization to prevent congenital rubella syndrome. Recommendations in the report with both immediate and long-term impact include those that strengthen medical genetics services. "Buildin...

There's something fishy about human brain evolution

...unction. Iodine is legally required to be added to salt in more than 100 countries. Says Dr. Cunnane: "We've created an artificial shore-based food supply in our salt." ...

Manipulating single cell receptor alters animal behavior

...ingly, the animals given this drug increased their salt intake without increasing their water intake. "Th...thways work to regulate the ingestion of water and salt may shed light on how similar events affect other behaviors, including learning and memory, feeding,...

Scientists discover basic defect in cystic fibrosis airway glands

... a membrane channel regulator essential for proper salt and water movement across some epithelia. Currently, there are two essentially opposite explanations for the inability of the body to clear mucus from the airways in cystic fibrosis. The first is that the defective CFTR is unable to aid in fluid se...

BioMed Central launches Biology Direct

...ho ever attended a scientific conference worth its salt knows that the discussions can be quite vigorous, often enough going to bare knuckles, especially during the coffee breaks or at the bar, but also in the conference room itself. Sometimes someone gets upset or offended but it is, definitely, an excep...

'Biobullets' fight harmful mussels

...wly release small amounts of potassium chloride, a salt that is poisonous to most freshwater mollusks. Unlike other methods used to eradicate zebra mussels, such as chlorine, "biobullets" pose little or no threat to other marine animals, the researchers say, because they rapidly degrade and disperse in wa...

Secrets of the sea yield stronger artificial bone

... of pure ice form layers, while impurities such as salt and microorganisms are expelled from the forming ice and entrapped in channels between the ice crystals. The result is a layered structure that roughly resembles nacre's wafer-like construction. The Berkeley Lab team believed this same freezing proc...

Fish on acid: Hagfish cope with high levels of CO2

...ronment, the Hagfish has the same concentration of salt in its blood as the surrounding seawater. This trait previously led scientists to believe that these fish (known as osmoconformers) could only poorly regulate their pH. The scientists next want to find the mechanisms by which they do this, and if pr...

Study reveals mass migration of mormon crickets driven by hunger, fear

...' movement as much as the need to find protein and salt pulls it, researchers say. The team's findings could lead to more environmentally friendly tactics for controlling large swarms of insects. ...

Better beetle sought for salt cedar control

Beetles from Uzbekistan are more prolific salt cedar eatersthan beetles from Greece. At least tha...alExperiment Station researchers hope. Uzbekistan salt cedar beetles being released by the ExperimentStation's entomology department are the same species a...

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