Watching DNA repair in real time
... containing fluorescently-tagged RecA. After short intervals of time, he moved it back to the first chamber to observe the results. By repeatedly dipping the same piece of DNA into the fluorescent channel, the researchers could see the RecA form clusters of four to five molecules on the DNA. Once those clust...Embryo project investigates agents of change in science
...udy of a variety of different factors at different intervals of time," Maienschein said. She added that the project brings together "researchers who would normally be working in their separate fields," in an effort to break down the boundaries that separate different academic disciplines. "Often the best wor...Study suggests evolutionary link between diet, brain size in orangutans
...ly than do Sumatra's orangs. Such relatively short intervals between births could themselves be tied to smaller...on of whether nutrition, brain size and interbirth intervals might be linked. Other scientists working in the 1980s had found no differences in brain size among...New vaccine stimulates colorectal cancer patient's immune systems to fight cancerous cells
... 12 weeks after surgery, and then at three monthly intervals up to a maximum of 24 months after surgery. Blood samples were collected from the patients during recruitment, at surgery, and at the time of the three-, six- and 12-week post-operative immunizations. Additional blood samples were acquired one month ...Brain wave changes in adolescence signal reorganization of the brain
...during sleep. Measurements were taken at six-month intervals and analyzed by computer. The researchers also recorded sexual maturity and physical growth (height, weight and body mass index) at each interval. They found delta wave intensity across the 9-11 age group was: unchanged the same for girls an...Wolves are suffering less from inbreeding than expected
...uctions is only required to be done at rather long intervals in order to maintain the genetic variation of populations....Trusting your instincts leads you to the right answer
...al display screen was switched off at various time intervals either before or after the subjects' eyes landed on the target. When the on-screen image was hidden immediately after the subjects' eyes had landed on the target, the subjects often believed they were just guessing where the odd one out was. They wer...Selective marker found to indicate aggressive form of breast cancer
...ommonly detected during normal screening mammogram intervals than other screening subtypes, which likely reflects its aggressive nature. These important clinical correlations likely explain why this subtype disproportionately accounts for breast cancer mortality, according to DiRenzo. In a retrospective s...Local range estimation in wild animals
...hed to animals that allow us to monitor at regular intervals of time (as fine as a fraction of a minute apart) the location of an animal to within the precision of a few meters. A new class of computational methods have been developed to construct distributions of where such monitored organisms are most likel......ach other, and send the information they gather at intervals to human operators. In wilderness parks, for example, such networks are used to monitor activity by wildlife. Sensornets are also being explored for industrial applications in oilfield monitoring and managment, for example. Ordinary wireless metho...Other highlights from the March 21 JNCI
...The researchers compared a variety of surveillance intervals using a simulated population to demonstrate how the evaluation schedule can affect the estimation of PFS. The researchers found that the outcome of the trial can be heavily influenced by the surveillance interval and that comparing the PFS times o...The great escape -- fleeing fish fall in line
...he experiment was performed ten times at 10 minute intervals on a total of seven separate schools of grey mullet. Interestingly, results suggested that there is a trend for individual fish to maintain a given rank, indicating that the chronological order of escape responses within a school is maintained in su...Scientists unravel clue in cortisol production
...led on the DNA, they tested the cells at different intervals in order to get a snapshot of which proteins were interacting, both with each other and the DNA and in which order this occurred. Then they mutated the proteins to stop them from fulfilling their roles. "One of the best ways to try and figure out t...Coarse particulate matter in air may harm hearts of asthma sufferers, UNC study finds
...ate variability, the variation of the beat-to-beat intervals of the heart. A healthy heart has wide heart rate variability, while decreased variability can indicate stress or cardiac disease. Surprisingly, there was no relationship between coarse particulate matter and rescue medication use, asthma symptoms,...HIV in breast milk killed by flash-heating, new study finds
...s checked the temperature of the milk at 15-second intervals and determined that the flash-heated milk reached a peak temperature of 163 degrees Fahrenheit (72.9 degrees Celsius), and typically stayed hotter than 132 degrees Fahrenheit (56 degrees Celsius) for more than six minutes. Viral analysis of the fla...Essential tones of music rooted in human speech
DURHAM, N.C. -- The use of 12 tone intervals in the music of many human cultures is rooted in t...rvals," Purves said. "This predominance of musical intervals hidden in speech suggests that the chromatic scale notes in music sound right to our ears because th...Remicade data in ankylosing spondylitis show improvement in spinal mobility and spinal inflammation
...ts in ASSERT were treated and assessed at six week intervals through week 102. According to the findings, compared with placebo group (N=78), at week 24 the REMICADE-treated patients (N=201) had a greater improvement in BASMI (defined as a change of at least 1 in the BASMI score) scores (-0.7 vs. -0.2, respect......ats, then used the distributions of the interspike intervals (ISIs) to model spontaneous release. Taking into account the spontaneous discharge rate and characteristic frequency of firing, the authors adjusted their models until they found one that reliably predicted the ISI distribution. The models assumed th...