admin on May 13th, 2009

Fluctuations in light intensity allow restoring the regularity of circadian rhythms. In higher organisms, such as mammals, biological or circadian rhythms are generated by a multicellular genetic clock which is located in two regions of the hypothalamus that are connected to each other known as suprachiasmatic nuclei (SCN), containing about 10,000 neurons each. In order [...]

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Scientists have developed an efficient method to detect entanglement shared among multiple parts of an optical system. They show how entanglement, in the form of beams of light simultaneously propagating along four distinct paths, can be detected with a small number of measurements. Entanglement is an essential resource in quantum information science, which is the [...]

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In new studies, exercise is shown to improve markers of heart disease in patients following coronary artery bypass surgery, to improve event-free survival rate in coronary patients better than stent angioplasty, and to improve markers of disease in heart failure patients, a group usually thought amenable to little more than palliative care.

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Psychologists help solve 20-year old reading riddle. Children’s early reading experience is critical to the development of their lifelong reading skills a new study.

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Obstructive sleep apnea (OSA) and central sleep apnea (CSA) are not markedly decreased in heart failure (HF) patients managed with beta-blockers and spironolactone, reports a new study.

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Entomopathogenic fungi may be a safe and efficient means of controlling Triatoma infestans, the bug that helps spread Chagas disease, according to new research conducted in Argentina. The study shows the success of the fungi to kill bugs resistant to current control methods.

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The tradition of American physicians handing out free drug samples to their patients “has many serious disadvantages and is as anachronistic as bloodletting and high colonic irrigations,” say two experts.

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A new way of reading light will sharpen the view of planets around other stars. Researchers have created an “astro-comb” to help astronomers detect lighter planets, more like Earth, around distant stars.

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Taking folic acid supplements for at least a year before conception is associated with reduction in the risk of premature birth, according to a new study.

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admin on May 13th, 2009

The lactate value indicates levels of fitness. At present, athletes have to visit a doctor to have it measured. A new analytical device will make things easier in future: athletes can wear it and check their lactate readings during training.

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