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Disappearing nest egg: Researcher studying declining numbers of macaws
10-23-2006 · EurekAlert!One of the most colorful birds in the world may have a less-than-colorful future. Macaws, the largest members of the parrot family, have seen their numbers decline in recent decades, and that trend is continuing today.
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Keywords: disappearing, nest, egg, researcher, studying, declining, numbers, macaws, number, macaw
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- Binghamton University researcher to study declining US fertility rates
12-12-2006 · EurekAlert!
In the United States, the total fertility rate -- the number of children a woman has in her lifetime -- fell from seven or eight in 1800 to slightly more than two today, says J. David Hacker, assistant professor of history at Binghamton University. And with a five-year $667,237 grant from the National Institute of Child Health and Human Development, Hacker hopes to find out why.
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- Reducing smoking -- mixed messages and poor markers
07-17-2007 · EurekAlert!
Some people are unwilling or unable to stop smoking, but are prepared to try and reduce the numbers of cigarettes they smoke each day. After studying healthcare literature, a team of Cochrane Researchers could find only a few reports that assessed methods aimed at helping people reduce use. It is also unclear whether cutting down the number of cigarettes delivers clear health benefits.
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- Jefferson scientists uncover gene mutation that cuts colon polyps, may suppress cancer
03-21-2007 · EurekAlert!
Scientists have found a gene mutation that can dramatically reduce the number of colon polyps that develop, potentially cutting the risk of cancer. Researchers studying mice prone to develop polyps discovered that animals carrying the damaged gene had about 90 percent fewer polyps in the small intestine and colon. Because people with large numbers of polyps are at higher risk for colon cancer, the finding may provide new ways to diagnose, prevent and treat it.
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- Scientific research on sense of humor sheds light on psychological profiles
06-14-2007 · EurekAlert!
The researcher analysed more than 1,500 people between the ages of 18 and 80 and a similar number of men and women. The study concludes that there are no universally good or bad jokes for both women and men, and points out that women have changed their humorous preferences.
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- Number of conflicts in the world no longer declining
12-21-2007 · EurekAlert!
The trend toward fewer conflicts reported by peace researchers since the early 1990s now seems to have been broken. This is shown in the latest annual report, "States in Armed Conflict," from the Uppsala Conflict Data Program at the Uppsala University Department of Peace and Conflict Research. The findings worry the researchers. The Middle East is the region where peace initiatives are most conspicuous in their absence.
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- Mother birds 'engineer' their offspring
05-22-2007 · EurekAlert!
Bird species that have relatively long incubation periods and short nestling periods for their body size have higher concentration of androstenedione than those species whose developmental time is shifted towards relatively longer stays in the nest than in the egg. This is an advantage depending on the predators. There is a relationship between egg levels of androstenedione and colony size, suggesting that mothers prepare their offspring for the social conditions.
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- Salmonella survives better in stomach due to altered DNA
01-30-2007 · EurekAlert!
Since 1995 there has been a considerable increase in the number of infections with a specific type of Salmonella bacteria transmitted via food. This type, Salmonella serovar Typhimurium DT104, is resistant to at least five different antibiotics. Dutch researcher Armand Hermans found new genetic information in DNA of DT104 that might be involved in its survival and infection mechanism. This genetic information might also be involved in the increase in the number of infections caused by this pathogen.
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- Security that nets malicious Web sites
03-23-2007 · EurekAlert!
Have you ever wondered how fraudulent or malicious Web sites can rank highly on search engines like Google or Yahoo?Queensland University of Technology IT researcher Professor Audun Josang said a Web site's ranking was determined by the number of people who visited the site -- the more hits the higher the ranking.
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- Copy number variation may stem from replication misstep
12-27-2007 · EurekAlert!
Genome rearrangements, resulting in variations in the numbers of copies of genes, occur when the cellular process that copies DNA during cell division stalls and then switches to a different genetic "template," said researchers at Baylor College of Medicine in Houston in a report that appears today in the journal Cell.
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- Improved diagnosis of cutaneous leishmaniasis thanks to new techniques
01-24-2008 · EurekAlert!
Dutch researcher Wendy van der Meide has developed and evaluated new techniques for a better diagnosis of cutaneous leishmaniasis and an improved monitoring of its treatment. Accurately establishing the number of parasites in a skin lesion before, during and after treatment is vital, so as to prevent serious physical consequences.
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