A national Radiation Therapy Oncology Group (RTOG) study led by a Medical College of Wisconsin Cancer Center physician at Froedtert Hospital in Milwaukee has found that a course of radiation therapy to the brain after treatment for locally advanced non-small cell lung cancer reduced the risk of metastases to the brain within the first year after treatment. The study was presented at the American Society of Clinical Oncology annual meeting in Orlando.
Like human infants, young apes are make noises when you tickle them. Is that really laughter? The answer to the question is yes, say researchers in Current Biology.
The researchers analyzed the recorded sounds of tickle-induced vocalizations produced by infant and juvenile orangutans, chimpanzees, gorillas, and bonobos, as well as those of human infants. A quantitative phylogenetic analysis of those acoustic data found that the best "tree" to represent the evolutionary relationships among those sounds matched the known evolutionary relationships among the five species based on genetics. The researchers said that the findings support a common evolutionary origin for the human and ape tickle-induced expressions.
Quick, who was the feared hitter that legendary baseball numbers guru Bill James says lost more career home runs due to playing in his home park than any player in history?
In two hours, under my guidance, a small group of 5th and 6th graders built a drawbridge. We were operating using a plan essentially sketched on the napkin, with the napkin left at home. We had a stack of wood, rope, 2 hammers, a drill, a hacksaw, and a box of nails. I had access to as many kids as we needed as labor. And, again, we built a portable, freestanding, working drawbridge in under 2 hours. And assembled it outside a classroom 'medieval museum' to serve as its entrance for the rest of this week.
Just which skills of a computational astrophysicist made me especially suited for such a task?
- my knowledge of geometry and trigonometry
- my background in space-borne CCD camera assembly
As I’ve often mentioned in this blog, philosopher
David Hume famously said that “No testimony is sufficient to establish a miracle, unless the testimony be of such a kind that its falsehood would be more miraculous than the fact which it endeavours to establish,” setting the bar for believing in miracles properly high.
Electronic memory chips may soon gain the ability to bend and twist, thanks to engineers at the National Institute of Standards and Technology (NIST)(1). Not too exciting, right? You probably don't spend a lot of time bending memory chips now but electronic components that can flex without breaking are coveted by portable device manufacturers for less Stretch Armstrong-type reasons; people have a tendency to drop their mp3 players and they could lead to small medical sensors that can be worn on the skin to monitor vital signs such as heart rate or blood sugar, benefitting patients with conditions that require constant maintenance.
Though some flexible components exist, creating flexible memory has been a technical barrier, according to NIST researchers.
Harmless gossip with a girlfriend can do wonders for a woman's mood and a University of Michigan study says they have an answer why: feeling emotionally close to a friend increases levels of the hormone progesterone, helping to boost well-being and reduce anxiety and stress.
A sex hormone that fluctuates with the menstrual cycle, progesterone is also present in low levels in post-menopausal women and in men. Earlier research has shown that higher levels of progesterone increase the desire to bond with others, but the current study is the first to show that bonding with others increases levels of progesterone. The study also links these increases to a greater willingness to help other people, even at our own expense.
When women apply for faculty positions in math, science, and engineering at major research universities, they are interviewed and hired at rates equal to or higher than those for men, says a new report from the National Research Council. Women are still underrepresented among those considered for tenure, but those who are considered receive tenure at the same or higher rates than men.
That means the gender gap is closing without quotas and with a consistent expectation of excellence.
The congressionally mandated report examines how women at research-intensive universities fare compared with men at key transition points in their careers. Two national surveys were commissioned to help address the issue.
ELAD, the Extracorporeal Liver Assist Device, is a bedside system that treats blood plasma, metabolizing toxins and synthesizing proteins just like a real liver does.
Artificial livers have been attempted since the 1960s but because previous designs didn't use human liver cells, they couldn't adequately filter toxins or create chemicals essential to metabolism and blood-clotting. ELAD is the first artificial organ for liver patients that uses immortalized human liver cells.
In cell biology, 'immortalization' is when a genetically engineered cell line can reproduce indefinitely.
Scientists here have determined that combining bed bugs' own chemical signals with a common insect control agent makes that treatment more effective at killing the bugs. The researchers found that stirring up the bed bugs by spraying their environment with synthetic versions of their alarm pheromones makes them more likely to walk through agents called desiccant dusts, which kill the bugs by making them highly susceptible to dehydration.
A blend of two pheromones applied in concert with a silica gel desiccant dust proved to be the most lethal combination.
