Negative in Biological News

Wastewater produces electricity and desalinates water

... -- membranes that allow either positive or negative ions through, but not both -- between the central chamber and the positive and negative electrodes. Salty water to be desalinated is ... in water, it dissociates into positive and negative ions. When the bacteria in the cell consume the ...

They are young and need the job: A second chance for dangerous T-cells

... they leave the thymus," Klein reported. "This negative selection, that is the elimination of ... aspects of regulatory T-cells: How can negative selection, i.e. induced cell death, and ... one or the other T-cell destinies with a negative result." Instead, it turned out that the ...

Tips from the American Journal of Pathology

... Lymphostatin, a toxin produced by gram negative bacteria including E. coli and C. rodentium , ... target candidate for treatment of enteric gram negative bacteria. Dr. Klapporth and colleagues ... preventing extraintestinal manifestations of Gram negative infection." Babbin BA, Sasaki M, ...

Children who are dissatisfied with their appearance often have problems with their peer group

... be regarded as a high risk period for acquiring a negative body image. The children who weighed the most at ... are in the risk zone in terms of developing a negative body image. As negative attitudes towards overweight people are formed ...

Seven recommendations from Aarhus to COP15

... biodiversity Currently, biodiversity is under negative pressure from land-use, biological invasions, and ... in ways that alleviates rather puts additional negative pressure on biodiversity. 2. CC-integrated ... in other sectors can have positive, neutral, or negative impacts on biodiversity. Synergies could be ...

Old and young brains rely on different systems to remember emotional content

... memories, particularly those associated with negative emotions. The study, appearing online in the ... were neutral in nature and others had strong negative content such as attacking snakes, mutilated ... results were sorted according to the numbers of negative and neutral pictures that were remembered or ...

Ireland Cancer Center researcher finds most triple-negative breast cancers express muc-1 target

... Center has found that the vast majority of triple negative breast cancers express the MUC-1 target. This ... trial for patients with early stage triple negative breast cancer that could potentially prevent ... in January 2009 for women with early stage triple negative breast cancer to see if this vaccine can raise ...

First-ever socioeconomic study on coral reefs points to challenges of coastal resource management

... points to the critical need to consider how those negative changes to the reefs impact humans as well. The ... on the reef as well as the effects of those negative changes on the community. We need both to happen ... is needed to understand and mitigate potential negative impacts of MPAs on human populations and that ...

Rice University study finds possible clues to epilepsy, autism

... of biochemistry and cell biology, discovered that negative feedback mediated by PI3K regulates the ... Howlett's breakthrough was identifying the negative feedback loop that acts to maintain neuronal ... its role in tumor formation." Discovering the negative feedback loop that keeps neurons stable was key, ...

Caltech-led researchers find negative cues from appearance alone matter for real elections

... are more associated with the brain's response to negative aspects of a politician's appearance than to ... for character traits. The studies suggest that negative evaluations based only on a politician's ... may work preferentially, or more uniformly, via negative motives, and by means of brain processing ...

New Study Reveals the Emotional Impact and Effectiveness of Negative Campaigning

... Election Patterns Report explains the impact of negative campaigning tactics and the emotions of voters; ... three key findings: 1) the emotional impact that negative campaign ads and events have on voters affects ... most resemble Obama supporters. The Impact of negative Campaigning Tactics and the Emotions of Voters ...

Exploding chromosomes fuel research about evolution of genetic storage

... chromosomes is problematic because DNA carries a negative charge that, unless neutralized, prevents any ... The larger the quantity of DNA, the more negative charge must be neutralized along its length. ... called histones partially neutralize the DNA's negative charge. When histones wrap themselves in DNA, ...

Brown tree snake could mean Guam will lose more than its birds

... has often been used as a textbook example for the negative impacts of invasive species, but after the loss ... from the trees. That could have two possible negative impacts on the native forests, Rogers said. ... birds to disperse seeds beyond the range of those negative effects. If native birds performed those ...

Dosage of fertilizer helps to enhance quality of wheat

... enhances the quality of wheat and limits its negative effects on the environment. This is the ... the use of nitrogenated fertilizers has had negative consequences for the environment, as plants only ... limit production costs and do this reducing the negative impact on the environment. Besides, the quality ...

Biomarker predicts malignancy potential of HG-PIN lesions in the prostate

... biopsies - those that are repetitively negative and contain HG-PIN lesions that do not develop ... who had been earlier diagnosed with HG-PIN; the negative control group included 11 patients with bladder ... a score of less than 100, is 34 percent, and the negative predictive value (the chance that the HG-PIN ...

How what and how much we eat (and drink) affects our risk of cancer

... downstream pathways, such as Akt and mTOR. negative energy balance inhibits, while positive energy ... risk of developing multiple cancers. However, a negative energy balance state, as induced by calorie ... model to examine the effects of both positive and negative dietary energy balance on skin tumor promotion ...

Researchers reveal HIV peptide's possible pathway into the cell

... the HIV peptide cannot satisfy itself with the negative charges available on the cell membrane surface it ... show the peptides grabbing for surrounding negative charges, but when no more of those charges are ... peptides reach into the cell membrane and grab negative charged phosphates from the other side. This ...

RNA interference therapy heals growth deficiency disorder in a live animal

... IGHD-II is what geneticists call a dominant negative disorder. It is caused by a defective form of ... eating, says Phillips. Some other common dominant negative diseases include forms of colon cancer, deafness, ... first time it has been used to correct a dominant negative disorder in a living animal, says Patton. The ...

FIJI Water announces sustainable growth initiative with commitment to help mitigate climate change

... today that will make its products carbon negative beginning in 2008. To achieve this, FIJI Water ... footprint. To ensure transparency of its carbon negative commitment, FIJI Water will work with ICF ... truly goes beyond carbon neutral and leaves a negative carbon footprint. FIJI Water also appointed ...

Recycling wind turbines

... devised a method for mapping and mitigating the negative environmental impacts of wind turbines which ... industry will be able to minimize any potential negative impact of their use. "Because the wind-turbine ... their approach and so find ways to reduce any negative impacts of wind power. ...

News tips from the Journal of Neuroscience

... behavior per se. Mapping the Regulation of negative Moods Tom Johnstone, Carien M. van Reekum, ... viewed a standard set of emotionally positive or negative pictures. In order to decrease the associated ... to imagine, for example, a happy out come for a negative image. Pupil dilation provided a measure of ...

Hormone levels contribute to stress resilience

... an area of the brain called the hippocampus that is very sensitive to the negative effects of stress. "Animal studies have shown that DHEA buffers against ... compounds like DHEA might be used to protect military personnel from the negative impact of operational stress." Clearly, additional research is still ...

Spring cold snap helps with stream ecosystem research

... National Laboratory with further evidence that climate change could have negative effects on stream and forest ecosystems. As warm weather arrives sooner ... hand, we see that early leaf emergence has become predictable and has negative effects on the stream ecosystem during the critical spring period when ...

'Shortcuts' of the mind lead to miscalculations of weight and caloric intake, says Penn study

... Penn psychologists point to the study as a novel example of the negative artifacts packaged within the evolved way the human brain processes ... it's the shortcut that hurts us." The researchers believe that the negative artifacts of the evolved mind may be directly connected with America's ...

Bullies have harassed 14 percent of workers over past 6 months

... SINC that "workplace abuse is a phenomenon with many causes, can lead to negative consequences in workers, their social and family environment, and can ... using information from the nearly 3,000 valid responses received from the negative Acts Questionnaire Revised (NAQ-R), which is a specific tool used to ...

Double trouble for water life

... 'dead zones' and leads to the destruction of fisheries habitat. The negative consequences of eutrophication have been apparent in freshwater habitats ... nitrogen loads from rapidly growing human sources, with severe negative impacts on ecosystem structure and function. This has led to the need for ...

Scientists shed light on inner workings of human embryonic stem cells

... to help with other diseases and injuries. The study describes nature's negative feedback loop in cell biology. "We have found an element in the cell ... factor known as OCT4, they found. "It's a beautiful double negative feedback loop," Kosik said. "They control each other. That is the essence ...

Lab study shows THC exposure as adolescents linked to negative effects of THC as adults

... the primary ingredient in marijuana and hashish, less sensitive to THC's negative effects on tests of learning and memory. A new study, reported at the ... produces persistent changes in the brain that sensitize females to the negative effects of THC later in life. Jessie Sutton, a research associate in ...

Green IT not helping climate change

... the environmental footprint as a marketing tool. "But probably most of the negative environmental impacts occur in the form of completely unintended, second ... so extensively that its environmental implications positive as well as negative are often overlooked. Hawkins and his research team are establishing a ...

New data suggest 'jumping genes' play a significant role in gene regulatory networks

... reveals that at least five percent of the human genome has been under negative selection during most of mammalian evolution," Haussler said. "We believe ... message in a genome. According to Haussler, however, most of the DNA under negative selection in vertebrate genomes does not appear to be transcribed and ...

New asthma research opposes current drug treatment, says UH prof

... would not replace the need for emergency inhalers for acute episodes, the negative effects associated with beta blockers eventually taper off to provide ... therapy at the end of the trial, although some did experience an initial negative response. (See related release at ...

Wistar scientists find key to keeping killer T cells in prime shape for fighting infection, cancer

... control over T cells' response is remarkable. It suggests that layers of negative regulation exist on exhausted T cells from co-expression of multiple ... T cell response, but not completely, so the researchers suspected other negative regulatory pathways were activated as well. In the newest report in ...

Dolphin population stunted by fishing activities, Scripps/NOAA study finds

... in the October issue of Marine Ecology Progress Series , reveals that negative impacts from fishing activities remain. Instead of reducing numbers ... fishing effort. Together, the results showed that fishing had a negative impact on calf survival rates and/or birth rates. This could be caused ...

Thinking it through: Scientists call for policy to guide biofuels industry toward sustainability

... Melillo says. "We can help society avoid or at least reduce some of the negative consequences of the expansion of biofuels programs in the United States ... and energy to become productive. "If it takes a lot of inputs and if negative environmental consequences persist, then you clearly diminish the benefit ...

MU scientists go green with gold, distribute environmentally friendly nanoparticles

... create the nanoparticles without producing synthetic chemicals that had negative impacts on the environment. A new method, created by a University of Missouri research team, not only eliminates any negative environmental impact, but also has resulted in national and international ...

Site used by sodium to control sensitivity of certain potassium ion channels

... they maintain a negative-membrane potential, meaning the inside is more negative than the outside, which creates a driving force for sodium entry into the cells. This negative membrane potential is accomplished by potassium flowing out of the cell ...

Study reveals how viruses collectively decide the fate of a bacterial cell

... and cII and their protein production. The decision circuit involved both negative and positive feedback loops, which responded differently to changes in the ... The positive feedback loop was linked to the lysogenic pathway and the negative feedback loop was linked to the lytic pathway. With a single virus, cro ...

Substance found in fruits and vegetables reduces likelihood of the flu

... the susceptibility of mice to the flu, but quercetin canceled out that negative effect. Quercetin, a close chemical relative of resveratrol, is present ... as those that did not exercise. In other words, quercetin canceled out the negative effect of stressful exercise. The severity of the symptoms among those ...

Biological invasions increasing due to freshwater impoundments, says CU-Boulder study

... and the rainbow smelt. Such freshwater invaders often have direct negative effects on lake ecosystems, including reduced fishing success, changes in ... more reservoirs should be carefully balanced against the potential negative consequences, including increased biological invasions," Johnson said. ...

Relearning process not always a 'free lunch'

... The authors find that the difference between free-lunch learning and negative free-lunch learning is due to the particular method used to induce ... forgetting is induced by directional decay in synaptic connectivity, then negative free-lunch learning occurs. This suggests that evolution may have ...