Curious female rats, more willing to step out and explore their environment, survive breast and pituitary tumors longer than their more cautious sisters, says a Penn State researcher.
Dr. Sonia Cavigelli, assistant professor of biobehavioral health, says that her study of 80 female rats from birth to death shows that the curious ones with tumors lived, on average, an additional six months, or 25 percent longer lives, than the cautious ones.
“It’s difficult to extrapola
Computer reveals that life around black holes is turbulent and violent
For more than 30 years, astrophysicists have believed that black holes can swallow nearby matter and release a tremendous amount of energy as a result. Until recently, however, the mechanisms that bring matter close to black holes have been poorly understood, leaving researchers puzzled about many of the details of the process.
Now, however, computer simulations of black holes developed by researchers,
A new type of laminate performed spectacularly in depth-of-penetration ballistics tests, but its greatest potential may derive from its ability to be tailored to meet specific engineering requirements
An engineering professor at the University of California, San Diego has described in the March issue of JOM (the Journal of the Minerals, Metals and Materials Society) the unique properties of a new type of metallic laminate that can serve as armor and as a replacement for berylliu
Geothermal researchers at Sandia National Laboratories have developed sensors that can be placed in hotter and higher-pressure underground environments than previous instruments, a capability that is allowing geologists worldwide to make more precise measurements of subterranean conditions before and after large earthquakes occur.
The researchers hope the new sensors will provide geologists with a better understanding of earthquake-related phenomena and possibly provide more
Researchers at Yale School of Medicine have found that specific substances in the urine of pregnant women could serve as a screening/diagnostic tool for preeclampsia (hypertension and proteinuria during pregnancy). The study is published in March issue of American Journal of Obstetrics and Gynecology.
“Preeclampsia is one of the most common causes of maternal mortality in the United States, but establishing a correct diagnosis can be very difficult, especially in women with hype
Women diagnosed with early stage, non–invasive breast cancer who carry the same mutations in two inherited breast/ovarian cancer genes as women diagnosed with invasive breast cancer, may benefit from high risk treatment, Yale researchers report in the February 23 issue of Journal of the American Medical Association.
The inherited breast/ovarian cancer genes are BRCA1 and BRCA2, which are associated with an increased risk of breast and/or ovarian cancer. The results are part
Findings reported in Nature Neuroscience give new understanding to how cells in auditory system organize before hearing develops
Generations of neuroscientists have been indoctrinated into believing that our senses, thoughts, feelings and movements are orchestrated by a communication network of brain cells, or neurons, each responsible for relaying one specific chemical message called a neurotransmitter. Either neurons release a neurotransmitter that excites a neighboring cell,
A suitcase-sized machine tested at the Indiana University School of Medicine is making life easier for some patients undergoing rigorous dialysis for kidney failure.
A year ago, researchers at IU and across the country began testing the NxStage System One, a portable unit that allows patients to conduct their own dialysis at home or on the road. And the preliminary results are promising, says Michael A. Kraus, M.D., the study’s principal investigator and medical director of
After angioplasty is performed to widen clogged arteries, surgeons frequently use tiny wire-mesh tubes called stents to keep blood vessels open. But despite stenting, scar tissue can form to create new blockages — a process called in-stent restenosis (ISR). At present, vascular brachytherapy (catheter-based delivery of intracoronary radiation) is the only therapeutic modality proven to effectively reduce in-stent restenosis. But a team of Emory cardiology researchers presented a study at the
A gene that, in different variants, increases or decreases the level of atherosclerosis has been identified in mice. The corresponding human gene has been shown to play a role in the development of myocardial infarction. The results of the study is published this week on Nature Genetics Online.
Researchers at Karolinska Institutet, in collaboration with the Jackson Laboratory in the USA, AstraZeneca and a Japanese research group, have scrutinised an area on chromosome 1 that is
A novel, computer-assisted method for colorizing black and white images and movies has been developed by researchers at the Hebrew University of Jerusalem’s Benin School of Computer Science and Engineering.
The method is less expensive and time-consuming than earlier colorization methods developed in the late 20th century and which were used to convert to color several classic black-and-white motion pictures such as “Casablanca.”
A major difficulty with colorization ha
At his inaugural lecture Professor Nicholas Emler, the University of Surrey’s newly appointed Head of School of Human Sciences, addresses just what separates us humans from all other species.
Humans are not unique in being social animals as many other species are also undeniably social in one way or another. Many live in groups, communicate, co-operate, make sacrifices for one another, and share resources. However, what sets us apart from the likes of ants, termites and bees is t
Navarre University Hospital has launched a novel system for capturing facial movement that enables such movement to be monitored and quantified in a precise manner.
The device, designed by STT Engineering & Systems of Donostia-San Sebastian and adapted for use by the Plastic Surgery service at the Hospital for facial applications, has received the 2004 Award in the Innovative Projects Competition for Young Entrepreneurs for Transference of Research Results (Ideactiva Gaztempresa
Astronomers using the European Space Agency’s XMM-Newton telescope have discovered that observing the giant planet Jupiter may actually give them an insight in to solar activity on the far side of the Sun! In research reported in the most recent edition of Geophysical Research Letters, they discovered that Jupiter’s x-ray glow is due to x-rays from the Sun being reflected back off the planet’s atmosphere.
Jupiter is an intriguing object when viewed in x-rays; it has dramatic x-ra
After skimming by the Earth at just 1954 km on 4 March 2005, Rosetta turned its Navigation Cameras back towards our home planet and recorded a series of black and white images.
These images were recorded by Navigation Camera 1 between 12:47 and 13:08 UTC, 5 March, with an integration time of between 0.01 and 0.05 seconds. The pictures show a field of view (FoV) of 4 degrees x 4 degrees.
At this time, Rosetta was flying away from the Earth having completed the closest-ever fly-by
The first superconducting magnet for the Large Hadron Collider (LHC) was lowered into the accelerator tunnel at 2.00 p.m. on Monday, 7th March. This is the first of the 1232 dipole magnets for the future collider, which measures 27 km in circumference and is scheduled to be commissioned in 2007. The date was thus a key one for CERN since the delivery of the 15 metre long dipole magnet weighing 35 tonnes to its final location marks the start of LHC installation.
The LHC will c
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