Guest Post – Page 540 – Shamskm: A site to exchange knowledge and solutions

Pacific Ocean Temperature Influences Tornado Activity in U.S., MU Study Finds

By Guest PostNovember 4, 2013Environmentalabama, atmospheric science, ef scale, enhanced fuijta scale, illinois, Indiana, into tennessee, jerett rion, laurel mccoy, pacific decadal oscillation, pacific ocean temperature, pdo, sea temperature, strength of tornados, tony lupo, tornado activity, united states, university of missouri, US, weather conditions

COLUMBIA, Mo. – Meteorologists often use information about warm and cold fronts to determine whether a tornado will occur in a particular area. Now, a University of Missouri researcher has found that the temperature of the Pacific Ocean could help scientists predict the type and location of tornado activity in the U.S.

Laurel McCoy, an atmospheric science graduate student at the MU School of Natural Resources, and Tony Lupo, professor and chair of atmospheric science in the College of Agriculture, Food and Natural Resources, surveyed 56,457 tornado-like events from 1950 to 2011. They found that when surface sea temperatures were warmer than average, the U.S. experienced 20.3 percent more tornados that were rated EF-2 to EF-5 on the Enhanced Fuijta (EF) scale. (The EF scale rates the strength of tornados based on the damage they cause. The scale has six category rankings from zero to five.) (more…)

Adidas und Nike halten an giftigen Chemikalien fest

By Guest PostNovember 3, 2013Environmentadidas, chemie experte, China, chinesische konzern, detox catwalk, giftigen chemikalien, Greenpeace, hazardous chemicals group, ipe, li ning, manfred santen, mensch, mexiko, nike, online plattform, Pakistan, per, pfc, polyfluorierte chemikalien, textilproduktion, umwelt, zdhc, zero discharge

Neuer Greenpeace-Bericht entlarvt die zwei weltweit größten Sportartikelhersteller

Adidas und Nike haben bisher zu wenig unternommen, um wie versprochen bis zum Jahr 2020 auf giftige Chemikalien in ihrer Produktion zu verzichten. Auch der chinesische Konzern Li Ning hat noch keine konkreten Schritte eingeleitet, um bis 2020 schadstofffrei zu produzieren. Dies zeigt eine neue Online-Plattform von Greenpeace, der “Detox-Catwalk“.

Dort werden die 17 Modefirmen, die sich im Rahmen der Detox-Kampagne von Greenpeace zum Gift-Ausstieg bis 2020 verpflichtet haben, in die Kategorien „Trendsetter“, „Greenwasher“ und „Schlusslichter“ unterteilt. „Vor zwei Jahren waren Adidas und Nike noch Detox-Vorreiter, haben dann aber den Worten keine Taten folgen lassen. Gerade Adidas macht weiter wie bisher, anstatt konkrete Maßnahmen hin zu einer sauberen und transparenten Textilproduktion zu beginnen“, sagt Manfred Santen, Chemie-Experte von Greenpeace. (more…)

Grasshopper Mice Are Numb to the Pain of the Bark Scorpion Sting

By Guest PostNovember 3, 2013Natureanalgesic medications, bark scorpion sting, grasshopper mice, pain neurons, scorpion toxin, scorpion venom

AUSTIN, Texas — The painful, potentially deadly stings of bark scorpions are nothing more than a slight nuisance to grasshopper mice, which voraciously kill and consume their prey with ease. When stung, the mice briefly lick their paws and move in again for the kill. (more…)

Study Finds Natural Compound Can Be Used for 3-D Printing of Medical Implants

By Guest PostNovember 3, 2013Science3d printing, 3d printing technology, alexander nguyen, anastasia koroleva, biocompatible, chapel hill, laser zentrum hannover, medical implants, natural compound, non toxic polymers, nontoxic, north Carolina, photoreactive liquid precursors, riboflavin, roger narayan, shaun gittard, solid polymer, state university, three-dimensional, university, vitamin b2

Researchers from North Carolina State University, the University of North Carolina at Chapel Hill and Laser Zentrum Hannover have discovered that a naturally-occurring compound can be incorporated into three-dimensional (3-D) printing processes to create medical implants out of non-toxic polymers. The compound is riboflavin, which is better known as vitamin B2.

“This opens the door to a much wider range of biocompatible implant materials, which can be used to develop customized implant designs using 3-D printing technology,” says Dr. Roger Narayan, senior author of a paper describing the work and a professor in the joint biomedical engineering department at NC State and UNC-Chapel Hill. (more…)

Single mutation gives virus new target

By Guest PostNovember 3, 2013Sciencecell cultures, ganglioside sugar, human polyomavirus, surface of cells

A mutation as minute as swapping just one amino acid can completely change the target that a virus will bind to on a victim cell — potentially shifting what kind of cell and eventually what kind of organism a virus could infect.

PROVIDENCE, R.I. [Brown University] — In a new study published online in the journal PLoS Pathogens, an international team of scientists showed that by swapping a single amino acid they could change the sugar to which the human BK polyomavirus will binds on the surface of cells. The BK polyomavirus lost the ability to bind its usual target sugar and instead “preferred” the same sugar as its cousin SV40 polyomavirus, which is active in monkeys. (more…)

Redwood trees reveal history of West Coast rain, fog, ocean conditions

By Guest PostNovember 3, 2013Environmentatmosphere, climate change, coastal redwoods, coastline, dendrochronology, earth, fog, foggy surrounding, historic fires, human caused, jim johnstone, john roden, molecules, natural variability cycles, northern california, ocean condition, oxygen, reconstructing historic climate, redwood trees, redwoods lifetime, southern oregon university, todd dawson, university of california, university of washington, west coast rain

Many people use tree ring records to see into the past. But redwoods – the iconic trees that are the world’s tallest living things – have so far proven too erratic in their growth patterns to help with reconstructing historic climate.

A University of Washington researcher has developed a way to use the trees as a window into coastal conditions, using oxygen and carbon atoms in the wood to detect fog and rainfall in previous seasons. (more…)

Schutz der Antarktis auf Eis gelegt

By Guest PostNovember 2, 2013Natureantarktis, antarktis experte, bob zuur, ccamlr, eu, frankreich, globale verschmutzung, klimawandel, michael poliza, naturschutz, neuseeland, pinguine in antarktis, pinguinen, russland, usa, vorschlag von australien, wwf

WWF: Fischereiinteressen verhindern Meeresschutzgebiete im Südpolarmeer

Hamburg/Hobart – Die Ausweisung riesiger Meeresschutzgebiete in den eisigen Gewässern der Antarktis ist erneut gescheitert. Die Jahreskonferenz der zuständigen internationalen Kommission zur Erhaltung lebender Meeresressourcen (CCAMLR) im australischen Hobart endete, ohne dass besonders empfindliche und wertvolle Regionen des Südpolarmeers mit seiner Tierwelt dauerhaft unter Naturschutz gestellt wurden. „Es ist eine schwere Enttäuschung. Hier geht es um die letzten weitgehend unberührten Meere des Planeten, der antarktische Ozean ist einzigartig und braucht dauerhaften Schutz. Der Druck durch Fischerei, Schifffahrt und Klimawandel nimmt ständig zu“, kritisiert Bob Zuur, Antarktis-Experte des WWF, die fehlenden Resultate. „Auch der dritte Versuch, hier Meeresschutzgebiete zu errichten, ist an dominierenden Fischereiinteressen gescheitert. Die Unfähigkeit hier Einigung zu erzielen, stellt in Frage, ob die CCAMLR-Kommission ihren vorgeschriebenen Schutzauftrag angemessen ausfüllen kann.“ (more…)

‘Witch Head’ Brews Baby Stars

By Guest PostNovember 2, 2013Sciencebaby stars, clouds of nebula, witch head, witch head nebula

A witch appears to be screaming out into space in this new image from NASA’s Wide-Field Infrared Survey Explorer, or WISE. The infrared portrait shows the Witch Head nebula, named after its resemblance to the profile of a wicked witch. Astronomers say the billowy clouds of the nebula, where baby stars are brewing, are being lit up by massive stars. Dust in the cloud is being hit with starlight, causing it to glow with infrared light, which was picked up by WISE’s detectors. (more…)

Author Archives: Guest Post