Bone marrow, the spongy tissue inside long bones, produces new blood cells and helps the lymphatic system work properly. But it may also turn out to be a progressively hostile microenvironment that induces vascular dysfunction and ossification, or hardening, of blood vessels.
Rhonda Prisby, who is using a rat model to study bone vascular physiology and morphology, was recently surprised when she used light microscopy to look at bone marrow vessels. (more…)
Das Atomkraftwerk Gundremmingen in Bayern weist nach einer Studie des ehemaligen Leiters der deutschen Atomaufsicht, Professor Wolfgang Renneberg, gravierende Sicherheitsmängel auf. Dennoch hat der AKW-Betreiber RWE eine Leistungsausweitung der beiden Siedewasserreaktoren beantragt, über deren Genehmigung in den kommenden zwei Wochen entschieden werden könnte.
Wolfgang Renneberg, Professor am Institut für Sicherheits- und Risikowissenschaften der Universität für Bodenkultur Wien, listet mit großer Detailkenntnis Probleme beim Reaktor und bei dem Genehmigungsverfahren zur Leistungserhöhung auf. Besonders bedenklich: Das AKW Gundremmingen hat nicht die von den kerntechnischen Sicherheitsregeln geforderten ausreichenden Notkühlsysteme. Auch ist die Atomanlage nicht gegen den Absturz heutiger großer Verkehrsflugzeuge ausgelegt. Schon der jetzige Betrieb verstößt erheblich gegen kerntechnische Sicherheitsvorschriften. Die Leistungsausweitung kann nach geltenden Vorschriften nicht genehmigt werden. (more…)
ANN ARBOR — When water is scarce, Ecuador laurel trees ramp up their investment in a syrupy treat that sends resident ant defenders into overdrive, protecting the trees from defoliation by leaf-munching pests.
The water-stressed tropical forest trees support the production of more honeydew, a sugary excretion imbibed by the Azteca ants that nest in the laurels’ stem cavities. In return, ant colonies boost their numbers and more vigorously defend the life-sustaining foliage. (more…)
If you look at the lives of singles there are many who are seen busy planning for things like dating. With the advent of a number of online dating sites, the idea of dating has become simpler and accessible by all. Earlier people feared approaching a girl or a boy however, with anonymity over the web you do not hesitate in approaching women/men for dating. However, whether you happen to be an expert or a novice in online dating one thing is sure, you are bound to make mistakes. The experts might commit fewer mistakes while the newbie would do more. Before you consider yourself as an over confident fellow for being an online dating expert, make sure you check certain mistakes even the seasoned dating guys commit. The following are the big 5 mistakes which experts commit. Let’s check them out:
1). Posting old pictures and inaccurate details
When it comes to making a profile for online dating, many seasoned people are seen committing a mistake of putting inaccurate information on it along with posting older pictures or photos of their friends and other people. Make sure you list down the exact information as you never know you may lose a good person just for uttering a lie over your profile or for the picture you have posted. It is a big mistake, which even experts commit in online dating by starting a relationship with a lie. Never do this. (more…)
A growing body of evidence suggests that the brain plays a key role in glucose regulation and the development of type 2 diabetes, researchers write in the Nov. 7 ssue of the journal Nature. If the hypothesis is correct, it may open the door to entirely new ways to prevent and treat this disease, which is projected to affect one in three adults in the United States by 2050.
In the paper, lead author Dr. Michael W. Schwartz, UW professor of medicine and director of the Diabetes and Obesity Center of Excellence, and his colleagues from the universities of Cincinnati, Michigan, and Munich, note that the brain was originally thought to play an important role in maintaining normal glucose metabolism With the discovery of insulin in the 1920s, the focus of research and diabetes care shifted to almost exclusively to insulin. Today, almost all treatments for diabetes seek to either increase insulin levels or increase the body’s sensitivity to insulin. (more…)
Textilunternehmen entdecken Äthiopien als billiges Produktionsland. Für stabile Rahmenbedingungen sorgt ein repressives Regime.
Die Regierung Äthiopiens lässt Oppositionelle und missliebige Journalisten systematisch misshandeln und foltern. Das schreibt die MenschenrechtsorganisationHuman Rights Watchin einem kürzlich veröffentlichten Bericht. Laut Human Rights Watch sind unter den Gefangenen der Haftanstalt Maekelawi in der Hauptstadt Addis Abeba «Hunderte Oppositionspolitiker, Journalisten, Organisatoren von Protesten und angebliche Unterstützer von ethnischen Aufständen». Ihnen würden der Zugang zu Anwälten verweigert und Wasser und Nahrung entzogen, sie würden geschlagen und an den Handgelenken aufgehängt. (more…)
A Russian mission to the Martian moon Phobos, launching in 2020, would return samples from Phobos that contain bits and pieces of Mars itself. A new study calculates how much Martian material is on the surface of Phobos and how deep it is likely to go.
PROVIDENCE, R.I. [Brown University] — A planned mission to return a sample from the Martian moon Phobos will likely be a twofer, according to a study by Brown University geologists. (more…)
Snail study reveals that stress is bad for memory.
New research on pond snails has revealed that high levels of stress can block memory processes. Researchers from the University of Exeter and the University of Calgary trained snails and found that when they were exposed to multiple stressful events they were unable remember what they had learned.
Previous research has shown that stress also affects human ability to remember. This study, published in the journal PLOS ONE, found that experiencing multiple stressful events simultaneously has a cumulative detrimental effect on memory. (more…)
