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Fatty Acids Crucial to Embryonic Development

By Guest PostDecember 20, 2013Scienceacs, acsl4, acyl coa synthetases, bmp signaling pathway, different tissue types, early embryo, embryo implantation, embryonic development, enzyme, fatty acids, fruit fly, Germany, metabolism, polyunsaturated fatty acid, rosa miyares, steven farber, university of cologne, uterus development

Baltimore, MD— One classical question in developmental biology is how different tissue types arise in the correct position of the developing embryo. While one signaling pathway that controls this process has been well described, unexpected findings from a team led by Carnegie’s Steven Farber reveal the importance of polyunsaturated fatty acid metabolism in this process. It is published online December 12 in Developmental Cell.

Fatty acids serve as sources of energy, the building materials of cellular membranes, and as signals for sending messages between cells. Enzymes are needed to activate free fatty acids so that they are useful for cellular processes. The enzymes that perform this function are called acyl-CoA synthetases, often shortened to ACS. (more…)

Study Offers Economical Solutions for Maintaining Critical Delta Environments

By Guest PostDecember 20, 2013Environment1954, age of humans, Anthropocene, black sea, bulgaria, Chernobyl, danube river delta, deforestation, delta environments, economical solutions, floodplain, frequency, Germany, historic data, hungary, iron gates dams, liviu giosan, main european waterway, nuclear bomb testing, nuclear reactor, radiocarbon analysis, radioisotope cesium 137, rising sea level, romania, sandy barriers, sea level, warming climate, wave dominated deltas, whoi

Millions of people across the world live or depend on deltas for their livelihoods.

Formed at the lowest part of a river where its water flow slows and spreads into the sea, deltas are sediment-rich, biodiverse areas, a valuable source of seafood, fertile ground for agriculture, and host to ports important for transportation.

At least half of the deltas around the world are so-called “wave dominated deltas” – open to the sea and under the impact of wave erosion. And many more deltas will come under wave dominance as dammed rivers carry less and less sediment. In a warming climate, sea levels are rising and storms are increasing in frequency and severity, posing threats to these deltas and the people and habitats dependent on them. (more…)

E-Book zum Thema Detlef D! Soost Diät

By Guest PostDecember 19, 2013Health10 weeks, 10wbc, abnehmen, body change, choreograph detlef d, detlef d, e book, ernaehrung, fisch statt pasta, fleisch statt kartoffeln, soost diaet, sport, thema, trendfit

Die Ernährung in der Detlef D! Soost Diät Mehr dazu im Ratgeber Detlef D! Soost Diät auf https://www.trendfit.net. Wer kennt das nicht? Wir haben versucht mit der Kohlsuppendiät abzunehmen, haben wochenlang nur Eier gegessen oder ganz auf etwas verzichtet – und nichts funktioniert.

Abnehmen klingt so leicht und ist in der Realität für viele doch ein lebensbeherrschendes Thema. Der aus dem Fernsehen bekannte Choreograph Detlef D Soost hat nun ein Diätprogramm gestartet, welches auf Bewegung, Ernährung und Motivation setzt. Wie speziell die Ernährung bei der “10 Weeks Body Change” – Diät (kurz: 10wbc) aussieht, finden sie hier. (more…)

Gewinner und Verlierer 2013

By Guest PostDecember 19, 2013Nature2013, afrika, amur leopard, auerhahn, China, dinosaurier, elefanten, europaeische wisent, finnwale, gewinner, klimawandel, loewen, nashoerner, nationalsparks im schwarzwald, pinguine, russland, tigermuecke, verlierer, west nil-fieber, wisent, wwf deutschland

WWF stellt animalische Jahresbilanz für den Artenschutz vor

Für Löwen, Elefanten, Nashörner, Finnwale und Pinguine war 2013 laut WWF-Jahresbilanz kein gutes Jahr. „Das größte Artensterben seit dem Verschwinden der Dinosaurier dauert an. Und der Mensch ist der Verursacher“, warnt daher Eberhard Brandes, Vorstand des WWF Deutschland anlässlich des Jahreswechsels. „Die Menschheit lebt über ihre Verhältnisse. Eine Folge davon ist der dramatische, immer weiter voranschreitende Verlust der Artenvielfalt.“ Lebensraumzerstörung, Überfischung und Klimawandel machten deutlich, dass die Menschheit ihr Naturkapital leichtfertig verspiele. Auch die Wilderei habe 2013 erneut zahlreichen Arten wie Elefanten und Nashörnern massiv zugesetzt. (more…)

Blue carbon

By Guest PostDecember 19, 2013Environmentatmosphere, blue carbon, blue carbon ecosystems, carbon dioxide, caroline rogers, davis, deforesting the mangroves, Environment, global mangrove, greenhouse gases, james sanchirico, juha siikamaki, mangroves, natural solution, rff, subtropical coastlines, sunny jardine, tropical, u.s economy, united states, university of california, university of delaware, virgin islands

World’s mangroves, salt marshes hold potential for reducing carbon emissions

Mangroves, the dense forests found along tropical and subtropical coastlines, have some specialized trees that can take in air through their roots at low tide and excrete salt right out of their leaves. The unusual ecosystems can also absorb large amounts of carbon dioxide, making them a natural solution for controlling greenhouse gases.

Disrupt them, however, and they’ll put that carbon right back into the atmosphere. (more…)

Signalers vs. strong silent types: Sparrows exude personalities during fights

By Guest PostDecember 19, 2013Natureaggressive behavior, aggressive intentions, aggressive situation, birds, caglar akcay, discovery park, elizabeth campbell, flipping the bird, mate, melospiza melodia, michael beecher, offspring, predator, seattle, signaling behaviors, song sparrows, university of washington, wild animal

Like humans, some song sparrows are more effusive than others, at least when it comes to defending their territories. New findings from the University of Washington show that consistent individual differences exist not only for how aggressive individual song sparrows are but also for how much they use their signals to communicate their aggressive intentions.

The findings, published online Dec. 4 in Proceedings of the Royal Society B, show that while many birds signal their intentions clearly, other “strong silent types” go immediately to aggressive behavior and ultimately attack without first signaling their intentions. (more…)

Verbände fordern von neuer Bundesregierung klaren Fahrplan gegen Luftverschmutzung

By Guest PostDecember 19, 2013EnvironmentAngela Merkel, axel friedrich, bundesregierung, deutschen umwelthilfe, deutschland, diabetesrisiko, dietmar oeliger, dorothee saar, duh, heiko balsmeyer, kampf gegen luftverschmutzung, luftqualitaet in deutschland, luftverschmutzung, vcd, weltgesundheitsorganisation, WHO

Das europäische „Jahr der Luft“ verpufft ohne entscheidende Verbesserungen für die Luftqualität und auf Kosten der Gesundheit der Bürger

Berlin- Im Europäischen Jahr der Luft 2013 starben in Europa etwa 420.000 Menschen vorzeitig an den Folgen von Luftverschmutzung. Allein in Deutschland sind circa 70.000 entsprechende Todesfälle zu beklagen. Angesichts dieser erschreckenden Zahlen fordern die Umwelt- und Verkehrsverbände die neue Bundesregierung auf, einen wirksamen Fahrplan zur Luftreinhaltung vorzulegen.

„Die scheidende Bundesregierung hat die Bemühungen zur Verbesserung der Luftqualität in Deutschland in den vergangenen vier Jahren konsequent sabotiert und sich wieder einmal als Handlanger der Industrie präsentiert. Das neue Kabinett muss jetzt beweisen, dass sie das Wohl der Bürger nicht über die Interessen einer Lobbygruppe stellt“, sagt Dorothee Saar von der Deutschen Umwelthilfe (DUH). (more…)

The Mystery of Lizard Breath

By Guest PostDecember 19, 2013Nature3d image, aerodynamic valves, african savannah, alligators, archosaurs, c g farmer, ct scans, dinosaurs, emma schachner, evolution, fast metabolisms, flying pterosaurs, gular pumping, harvard university, humans, james butler, lepidosauromorpha, lizard breath, lizard like creature, lungs, mass extinction, monitor lizards, mystery, one way patterns, oxygen consumption, permian triassic, rate, robert cieri, tidal breathing pattern, tuataras, unidirectional airflow, university of utah, varanus exanthematicus

One-Way Air Flow May Be 270 Million Years Old

Air flows mostly in a one-way loop through the lungs of monitor lizards – a breathing method shared by birds, alligators and presumably dinosaurs, according to a new University of Utah study.

The findings – published online Wednesday, Dec. 11 in the journal Nature – raise the possibility this breathing pattern originated 270 million years ago, about 20 million years earlier than previously believed and 100 million years before the first birds. Why remains a mystery. (more…)

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