A new study offers direction for those examining the illnesses of those working or living near large electrical facilities.
Exposure to light has been proven to inhibit the normal secretion of melatonin from the light-sensitive pineal gland. But light is only one part of the electromagnetic spectrum, occupying a wavelength between 730 and 400 nm. Because light is the only visible portion of the electromagnetic spectrum, other wavelengths may also inhibit melatonin secretion, including the omnipresent magnetic fields generated by the production, transport, and distribution of electricity (50 Hz in Europe, 60 Hz in North America). These fields are encountered in most activities of daily life, from lighting to heating and other routine household applications of electricity.
Past experimental studies of rats exposed to electric or magnetic fields have found a diminution in melatonin secretion. The importance of the length of magnetic field exposure in this inhibitory effect suggests that the effect of these fields on pineal function may be cumulative, at least in rats. In fact, much of the evidence for the melatonin hypothesis is based on data for rodents. But humans and rodents differ with respect to melatonin secretion in two important ways: (1) rodents are nocturnally active, and they show differences in the anatomical location of the pineal gland; and (2) the geometry of the skull may cause stronger eddy currents in field-exposed animals.
Donna Krupa | American Physiological Society
Multi-year study finds 'hotspots' of ammonia over world's major agricultural areas
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Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
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