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Tag: "greater" at biology news

The brain's motivation station

...uding learning and memory, and subjects who showed greater activation in these regions also showed better memory performance, found Adcock and colleagues. The researchers concluded that the learning mechanism they identified "may let an organism's expectations and motivation interact with events in the phys...

Gene therapy prevents the onset of diabetic symptoms in mice

...ore nutrients to plant roots -- were substantially greater around the roots of both seedlings and mature sugar maples in the treated plot. Future research will explore the relationship between mycorrhizae and acid rain. Though pollution-control legislation has helped reduce sulphuric acid by one-third sin...

Acid rain causing decline in sugar maples, say researchers

...ore nutrients to plant roots -- were substantially greater around the roots of both seedlings and mature sugar maples in the treated plot. Future research will explore the relationship between mycorrhizae and acid rain. Though pollution-control legislation has helped reduce sulphuric acid by one-third sin...

Coffee makes us more likely to say 'yes'

...s shown by increased agreement with the arguments, greater message-related thinking and better argument recall. Lead author Dr. Pearl Martin from the School of Psychology at the University of Queensland says, "Given the numerous situations in which people are exposed to persuasive arguments, these results...

Plant diseases threaten chocolate production worldwide

...ake chocolate are lost to plant diseases, but even greater losses would occur if important diseases spread. "Plant diseases are the most important constraints to cacao production and the continued viability of the world's confectionary trades," said Randy Ploetz, plant pathology professor at the Univers...

New strategy developed to combat West Nile Virus

...s doesn't necessarily mean that we'll experience a greater incidence of West Nile Virus. The mosquitoes themselves must first be infected with the virus. Researchers call the process through which more mosquitoes become infected 'amplification,' and there are a number of factors that lead to that stage. "By...

Newborn screening can cause unnecessary parental stress

...But our results also show that parental stress was greater when families didn't have adequate information and understanding." Two-thirds of parents with false-positive results did not correctly understand why their child was called back for a repeat test, the study found. Mothers who knew the correct reason...

Study provides first look at the 'birth' of a retina cell

...o produce rods or cones." With the ability to see greater detail in events along molecular pathways, Swaroop is enthusiastic about finding new methods for disrupting the disease process. There may also be opportunities to promote the production of new rods and cones when others die off. In future studies,...

Just like us, social stress prompts hamsters to overeat, gain weight

...are more aversive than predictable events, causing greater alterations in homeostasis and thus increased stre... research suggests that unpredictable events cause greater activation in brain regions responsible for fear and anxiety in laboratory rats and reduction in imm...

Green tea and the 'Asian Paradox'

... in Asia, even though consumption of cigarettes is greater than in most other countries," said Bauer Sumpio, M.D., professor and Chief of Vascular Surgery in the Department of Surgery. "But we now have some theories." Sumpio, the lead author of the review in the Journal of the American College of Surgeons, ...

Evolutionary forces explain why women live longer than men

...her-status peers. The impact of social standing is greater on male mortality than on female mortality, Kruger noted, partially because males who have a relatively lower status or lack a mate engage in a riskier pattern of behaviors in an attempt to get ahead, he said. ...

Wasps queue for top job

...hat those higher up the chain and therefore with a greater chance of being the next in line to breed are much lazier than their lower-ranked nest-mates: rather than use up their energy in foraging to feed the queen's larvae, high-rankers sit tight on the nest and wait for their chance to become queen themsel...

Major initiative proposed to address amphibian crisis

...cosystems, in some places the amphibian biomass is greater than that of all the other vertebrates. The long term ecological repercussions of their decline could be profound, and we have to do something about it." Programs of research, training, monitoring, salvage operations, disease management, captive b...

Joslin discovers signs of residual islet cell function in people with long-term type 1 diabetes

... Of this group, 12.7 percent had a c-peptide level greater than 0.3 ng/mL, which indicates active islet cells and some residual insulin production. Most of the Medalists have the characteristics associated with type 1 diabetes with or without the presence of c-peptide. In addition, 23.2 percent of the c-pep...

Pure novelty spurs the brain

...their finding that the SN/VTA is more activated by greater novelty is compatible with models of brain function "that see novelty as a motivating bonus to explore an environment in the search for reward rather than being a reward itself." Also, Bunzeck and Düzel found that novelty enhanced learning in the s...

A single sugar found responsible for an antibody's ability to treat inflammation

...tration of IgG antibodies that's hundreds of times greater than is normally used for antibody therapy for cancer or infection, for example, Ravetch and his colleagues began to look for something that was only present in IVIG in small amounts. That's how they discovered that just the very terminal sialic acid...

Speeding the search for elusive chromosomal errors

...more than 500,000 oligonucleotides), which provide greater resolution. His team is also developing better computational tools to evaluate data from these chips. "Our ability to detect even smaller rearrangements will only get better as there are improvements in the resolution of the microarrays and the compu...

Science captures the essence of fruit

...ealth food market. "Researchers are finding ever greater numbers of foods and food compounds that can enhance human heath and wellbeing. The trouble is, they don't always taste very good ?and until they do it will be difficult to encourage consumers to make them part of their regular diet," he says. "Add...

3-D model reveals secrets of metastasis

... of the jungle canopy (in two dimensions) needed a greater number of vines to keep up their pace, while cells plowing through the jungle instead needed vines chopped to maintain the same speed. The complexity of this situation is further increased in that the cells become dramatically sensitive to the stiffn...

Non-coding RNAs help silence the mammalian transcription

... we explore the mechanism of genomic imprinting in greater detail, it is becoming clear that there is not a single explanation for the silencing of all imprinted genes. Rather mammals have co-opted multiple transcriptional regulatory mechanisms that were already evolved. In the case of the Kcnqt1ot1, the me...

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