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Computer simulation model identifies key factors for successful transit of sperm in the genital tract A research team at the Humboldt University Berlin and the Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) developed an agent-based computer model to simulate the journey of sperm cells through the female genital tract. Key factors for a successful transit could be identified without the use of animal experiments and were published in the scientific journal "PLoS Computational Biology". During mating in wildlife species, males transfer millions of sperm into the female genital tr...

SARS-CoV-2 mutations occur in essentially the same locations, research finds New research from the University of Nebraska-Lincoln has shown that the mutations arising in the COVID-19-causing SARS-CoV-2 virus seem to run in the family -- or at least the genus of coronaviruses most dangerous to humans. After comparing the early evolution of SARS-CoV-2 against that of its closest relatives, the betacoronaviruses, the Nebraska team found that SARS-CoV-2 mutations are occurring in essentially the same locations, both genetically and structurally. The mutational similarities between SARS-CoV-2 and ...

Elektronen in Quantenflüssigkeit tanken Laserenergie Erkenntnisse eröffnen der ultraschnellen Elektronenmikroskopie neue Türen Lunghammer – TU Graz Leonhard Treiber, hier mit Doktorvater Markus Koch (rechts) machte die Entdeckung im Rahmen seiner Abschlussarbeit an der TU Graz. Hineinzoomen ").addClass("image-details"); var $imageCaption = $("").addClass("image-caption").text(caption); $imageDetails.append($imageCaption); element = $(" ").append('×').append($imageHolder).append($imageDetails)[0]; ...

Static magnetic field from MRI scanner decreases blood-brain barrier opening volume MRI-guided focused ultrasound combined with microbubbles can open the blood-brain barrier (BBB) and allow therapeutic drugs to reach the diseased brain location under the guidance of MRI. It is a promising technique that has been shown safe in patients with various brain diseases, such as Alzheimer's diseases, Parkinson's disease, ALS, and glioblastoma. While MRI has been commonly used for treatment guidance and assessment in preclinical research and clinical studies, until now, researchers did not know the im...

 E-Mail IMAGE: A new design from Chalmers University of Technology could help produce e-readers, advertising signs and other digital screens with optimal colour display and minimal energy consumption view more  Credit: Image: Marika Gugole/Chalmers University of Technology Imagine sitting out in the sun, reading a digital screen as thin as paper, but seeing the same image quality as if you were indoors. Thanks to research from Chalmers University of Technology, Sweden, it could soon be a reality. A new type of reflective screen - sometimes described as 'electronic paper' - offers opt...