Microbiologists from Wageningen have discovered a strange form of digestion in an exotic microorganism. The `Rushing fireball´, Latin name Pyrococcus furiosus , has reinvented the wheel for several steps of sugar digestion.
Pyrococcus furiosus , which was discovered 15 years ago on an Italian volcanic island, digests sugar somewhat differently from humans, animals, plants and bacteria. All organisms, convert glucose into pyruvate by means of a glycolysis. Pyrococcus furiosus
A European team of researchers has demonstrated that sediment is transported to the deep sea via canyons in the seabed. The sediment accumulates in the head of the submarine canyons. At the end of the canyons, mud avalanches disperse into the deep sea. Scientists from the Netherlands Institute for Sea Research (NIOZ) presented their findings at an international congress held from 7 to 10 April 2002.
With bottom landers, onboard the ship R.V. Pelagia, the researchers explored the Nazaré Canyo
The mysterious spectral bands in the infrared of interstellar gas clouds in deep space originate from organic compounds. Research by the Nijmegen physicist Hans Piest confirms this. He has provided new experimental evidence for this almost 30-year-old problem in astronomy.
Each molecule has specific wavelengths at which it can either absorb or emit light. This forms the fingerprint of a substance. With this fingerprint, astronomers can demonstrate the presence of a substance in a distant sta
The intestines of mice which have been subjected to stress, overreact to certain nutritional substances. PhD biologist Annette van Kalkeren from the University of Amsterdam has investigated the relationship between stress and the occurrence of food allergies and various intestinal disorders.
The biologist investigated the reaction of pieces of mouse intestine to egg albumin, a substance found in eggs. Just like humans, mice can become allergic to the substance. However, mice only become alle
In the fall of 1997 a then unknown species of plankton, Parvilucifera infectans , was discovered in the Gullmar Fjord, on the west coast of Sweden. The organism is a parasite that infects and kills several species of toxic algae. Some of these toxic algae can generate extremely potent blooms at great cost to fisheries and the tourism industry around the world. Other species cause mussel toxins that cause major problems for mussel farmers in Sweden and elsewhere.
Fredrik Norén at Götebo
Researchers eager to use individual molecules as the components of ultra-small electronic circuits and computers have put a new spin on their ambitious goal.
They take advantage of a hitherto unexploited property of electric currents, called spin, to make molecular devices that operate under new rules. This fledgling form of electronics, called spintronics, could lead to computers that don’t forget anything when their
Erasing molecular memory of parents could shed light on clones.
Cells naturally wipe out the mark of their parents in 24 hours, say cloning experts. Exactly how may begin to explain the way that animal clones and stem cells are reprogrammed. Not all genes are born equal. In mammals, some genes are imprinted – cells switch on only the copy inherited from mum or dad, not both. This sex stamp must be erased and rewritten in sperm and egg cells, however, so they are correctly labelled as
Communication, clearly essential to humans, is also essential to cells, their elemental building blocks. In order to preserve organic cohesion, cells need to communicate with their environment, but they also need to ensure adequate communication between their various compartments.
These forms of intracellular exchange are essential and require the setting up of actual networks. Membrane transport tubes were evidenced some years ago, but their formation has up till now remained a mystery.
The impact of heat on death rates begins at relatively low temperatures during hot weather, finds research in the Journal of Epidemiology and Community Health.
Researchers analysed temperature readings from the Meteorological Office and death rates from the Office of National Statistics for London between 1976 and 1996.
They found that death rates associated with heat started rising at about 19 degrees Centigrade (66 degrees Farenheit), and once above 21.5 degrees Centigrade (abou
Women who work during pregnancy are almost five times as likely to develop pre-eclampsia, concludes research in the Journal of Epidemiology and Community Health.
In pre-eclampsia abnormally high blood pressure, blood poisoning, and swelling develop. Pre-eclampsia can be dangerous for both mother and child.
The blood pressure of 933 women in their early to late 20s was monitored over 24 hours while they went about their daily routines. The women were all between 18 and 24 weeks of pr
Scientists at the Max Planck Institute for Chemical Physics of Solids and their international colleagues found signatures of an unconventional Hall response in the quantum limit of the bulk metal…
Professors from the Department of Physics and Astronomy have created a serpentine path for electrons. A research team led by professors from the Department of Physics and Astronomy have created…
Antibiotics have revolutionized medicine by providing effective treatments for infectious diseases such as cholera. But the pathogens that cause disease are increasingly developing resistance to the antibiotics that are most…
A ‘game changing’ study deciphering the genetic material of the desert locust by researchers at the University of Leicester, could help combat the crop-ravaging behaviour of the notorious insect pest…
Wheat researchers at the John Innes Centre are pioneering a new technique that promises to improve gene discovery for the globally important crop. Crop breeding involves assembling desired combinations of…
Prototype tech shrinks AI to deliver brain-like functionality in one powerful device. Researchers have developed artificial intelligence technology that brings together imaging, processing, machine learning and memory in one electronic…
Deep learning, also called machine learning, reproduces data to model problem scenarios and offer solutions. However, some problems in physics are unknown or cannot be represented in detail mathematically on…
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