Author Archives: Guest Post

Researchers Develop Faster, Precise Silica Coating Process for Quantum Dot Nanorods

Materials researchers at North Carolina State University have fine-tuned a technique that enables them to apply precisely controlled silica coatings to quantum dot nanorods in a day – up to 21 times faster than previous methods. In addition to saving time, the advance means the quantum dots are less likely to degrade, preserving their advantageous optical properties. (more…)

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Die Klagen der Bauern im Callejón de Huaylas

In den peruanischen Anden hadern Kleinbauern mit dem Wetter, verändernde Niederschlagsmuster erschweren demnach den traditionellen Anbau. Gemeinsam mit Hamburger Sozialgeographen haben Innsbrucker Meteorologen diese subjektiven Beobachtungen mit Daten von Wetterstationen verglichen und kommen zu einem überraschenden Ergebnis. (more…)

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Climate change alters the rules of sperm competition in the sea

The impact of climate change on global seawater conditions could change the rules of sperm competition for many important marine species, a pioneering new study has shown.

Researchers from the University of Exeter have shown that increasing ocean acidification, brought about by manmade carbon emissions, reduces sperm performance in a species of sea urchin, slowing down sperm in future ocean conditions. Interestingly, they found that different males were affected to different extents and that this could change the outcome when rival male ejaculates competed to fertilise a batch of eggs in the sea. (more…)

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Die Flora Afrikas auf einen Klick

Der Online-Fotoführer „African Plants“ wächst kontinuierlich: Kürzlich hat die Senckenberg-Datenbank die 5000er-Marke der illustrierten Pflanzenarten geknackt. Damit bildet die öffentlich zugängliche Fotosammlung etwa 10 Prozent der bekannten Pflanzenarten im kontinentalen Afrika ab. Derzeit werden weitere Fotos aus dem schwer zugänglichen Zentralafrika ergänzt und stehen so Hobbybotanikern, Afrika-Reisenden und Wissenschaftlern gleichermaßen zur Verfügung. (more…)

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Immune system, brain and behavior

Researchers find prenatal infection may create risk for later disorders

The Zika virus now active in numerous countries, and the severe birth defects associated with it, makes it clear that infection in pregnant women can have immediate and devastating effects on the developing baby. (more…)

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Hirnregionen automatisch bestimmen

Biologen entwickeln neue Analysemethode von Hirnaufnahmen und zeigen deren Anwendbarkeit am Beispiel von Fruchtfliegen

Muster in der genetischen Aktivität von Nervenzellen erkennen und daraus Rückschlüsse auf den Aufbau des Gehirns ziehen: Wie das möglich ist, zeigt ein Team von Biologinnen und Biologen um Prof. Dr. Andrew Straw am Beispiel von Fruchtfliegen. Die Arbeiten zu der Studie, die in der Fachzeitschrift „Current Biology“ erschienen ist, fanden an der Universität Freiburg und am Forschungsinstitut für Molekulare Pathologie (IMP) in Wien/Österreich statt.

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Political pitfalls in handling Ebola may carry over to Zika

ANN ARBOR — If the United States responds to Zika the way it did to Ebola—and early indications are that in many ways it is—the country can expect missteps brought about by a lack of health care coordination and a lot of political finger pointing, according to an analysis by the University of Michigan. (more…)

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Conception timed with periods of low mosquito activity could reduce Zika virus infection

Women could prevent contracting the mosquito-borne Zika virus while pregnant by timing the first months of pregnancy with seasonal declines in mosquito activity, according to a new paper. The paper is the first to suggest that women in the numerous countries affected by the Zika virus epidemic can still safely pursue motherhood rather than forgo pregnancy altogether. (more…)

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