In the 1980s, scientists captured the precise mechanics of a protein machine. It looked strange, to researchers its tall thin structure with stubby legs invoked the enchanted broomstick that stole the show in "The Sorcerer's Apprentice" segment of Disney's 1940 Fantasia film.
Diarrhea and candidiasis can result from taking the common antibiotic treatments, amoxicillin and amoxicillin-clavulanic acid, although harms may be underreported, according to a study published in CMAJ (Canadian Medical Association Journal).
If you want to know the secret to a longer life, look to reptiles. But you may not like the answer you find.There is a belief that a fast-paced lifestyle is damaging to health. Slowing down will not just be more relaxing, but also keep you around, finds an analysis of 1,014 species of reptiles (including 672 lizards and 336 snakes), a representative sample of the approximately 10,000 known reptiles on the planet. After examining their life history parameters, such as body size, earliest age at first reproduction, body temperature, reproductive modes, litter or clutch size and frequency, geographic distribution, and diet, they found that early sexual maturation and a higher frequency of laying eggs or giving birth were associated with shortened longevity.
It is known that at some point Mars was warm enough to have liquid water flowing on its surface. The evidence of ancient rivers, streams, and lakes remains. But it was not a long-term tropical vacation paradise. Instead, warmth and water flow on ancient Mars was probably episodic, related to brief periods of volcanic activity that spewed tons of greenhouse-inducing sulfur dioxide gas into the atmosphere, according to new climate models of early Mars which suggest that periods of temperatures warm enough for water to flow likely lasted for only tens or perhaps hundreds of years at a time.
The belief in Washington, D.C. political circles is that if kids have no choice, they will eventually eat whatever they are given. And they will grow to like it.
Does that work? In some instances it does, which is all the validation that culturally estranged people need to continue with a social experiment. The mistake they make is using the number of kids who take the food they are given and assuming that eventually it means the kids will eat it.
Probably not, suggests a new Johns Hopkins Bloomberg School of Public Health study, at least unless the government starts going into homes and controlling what they eat there as well.
Researchers have taught a computer program the outline of how a magic jigsaw puzzle and a mind reading card trick work, as well the results of experiments into how humans understand magic tricks, and it created completely new variants on those tricks which can be delivered by a magician.
The magic tricks created were of the type that use mathematical techniques rather than sleight of hand. The tricks proved popular with audiences and the magic puzzle was put on sale in a London magic shop. The card trick is available as an app called Phoney in the Google Play Store.
Most people think that biting is the way that aquatic creatures capture prey. Not so, instead suction is far more common.
That is why the diversity of skull shapes in biters is so much greater, according to a new study. Suction feeding limits skulls shapes because of the structural requirements for suction feeding.
"When you look at the skulls of biters, the diversity is astounding compared to suction feeders," said Rita Mehta, assistant professor of ecology and evolutionary biology at U.C. Santa Cruz.
A whirlpool of hybrid light-matter particles called polaritons has been created using a spiral laser beam.
Polaritons are hybrid particles that have properties of both matter and light. The ability to control polariton flows in this way could aid the development of completely novel technology to link conventional electronics with new laser and fibre-based technologies.
Polaritons form in semiconductors when laser light interacts with electrons and holes (positively charged vacancies) so strongly that it is no longer possible to distinguish light from matter.
A generation ago, there were awareness campaigns to tell people with an irregular heartbeats to go to the emergency room to prevent possible heart attacks.
It worked. People now go to the emergency room as they have been told but with the gradual government takeover of health care there is sudden concern about the costs of these visits. Atrial fibrillation is the most common kind of arrhythmia or irregular heartbeat and can lead to blood clots, stroke, heart failure and other heart-related complications.
At the American Heart Association's Scientific Sessions 2014, researchers analyzed patients from the Nationwide Emergency Department Data who visited the emergency department with AF listed as the first diagnosis in 2006-11. They found:
Since the year 2000, mortality rates for heart disease declined by almost 4 percent even as higher blood pressure and obesity role, according to a new paper in JAMA.
Matthew D. Ritchey, D.P.T., of the Centers for Disease Control and Prevention (CDC), Atlanta, and colleagues examined the contributions of heart disease subtypes, such as coronary HD (CHD) mortality, to overall heart disease (HD) mortality trends during 2000-2010.
Up to 50 percent of patients with heart failure have normal or near-normal ejection fraction, termed heart failure with preserved ejection fraction (HFPEF).
The risk of death in HFPEF may be as high as in heart failure with reduced ejection fraction (HFREF), but there is no proven therapy.
Beta-blockers improve outcomes in HFREF and may be beneficial in HFPEF, but data are sparse and inconclusive, and beta-blockers are currently not indicated for treating HFPEF, according to background information in the article.
Breathing secondhand marijuana smoke could damage your heart and blood vessels as much as secondhand cigarette smoke, according to preliminary research presented at the American Heart Association's Scientific Sessions 2014.
From 2000-2013 the global ocean surface temperature did not rise in spite of increasing greenhouse gas concentrations. This Global Warming Hiatus generated a lot of public and scientific interest and no small amount of skepticism about the accuracy of the numerical models created by climate scientists. But data is another matter entirely and as of April 2014 ocean warming has picked up speed again, according to a new analysis of ocean temperature datasets.
