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Showing posts from February, 2013

Deadly New Coronavirus

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In the news: "Scientists race to understand deadly new virus" by Tina Hesman Saey Science News February 27, 2013  BC4972 Coronavirus, a single-stranded RNA-containing virus that causes respiratory infection in humans. Credit: Eye of Science / Science Source



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Insulin Levels Regulated by Circadian Clock

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In the news: "Insulin levels wax and wane daily" by Tina Hesman Saey Science News February 22, 2013
BU6284 Islets of Langerhorns The islets of Langerhans are groups of specialized cells in the pancreas that make and secrete hormones. There are five types of cells in an islet: alpha cells (blue) that make glucagon, which raises the level of glucose (sugar) in the blood; beta cells (yellow -- shown in crossection) that make insulin; delta cells (purple) that make somatostatin which inhibits the release of numerous other hormones in the body; and PP cells and D1 cells, about which little is known. Insulin molecules are shown as green spheres; glaucagon molecules as blue spheres and glucose molecules as gray spheres. Insulin and glucagon can be seen entering the blood stream through the walls of capillaries. Degeneration of the insulin-producing beta cells is the main cause of type I (insulin-dependent) diabetes mellitus. Labeled.
Credit: Carol and Mike Werner / Science…

Electric Field of Flowers

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In the news: "Bees learn the electric buzz of flowers" by Susan Milius Science News February 21, 2013 

SK0462 Striped squill in UV light. Striped squill flower (Puschkinia scilloides) photographed to show areas that reflect ultraviolet (UV) light (base of petals) or absorb UV light (fused stamens at center of flower). The UV pattern, known as a 'nectar guide', is thought to help attract pollinating insects, which can see in UV light. This image was taken on a digital camera adapted to filter and detect UV light. UV light lies outside the visible spectrum, hence it has no true color. The monochrome image resulting from the camera is colored on computer. See image B830/3465 for the same plant in normal daylight. Credit: Bjorn Rorslett / Science Source
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Silicone Chips Not Nano Enough?

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In the news: "Nanotubes Seen as Alternative When Silicon Chips Hit Their Limits"  by John Markoff New York Times - Technology February 19, 2013 SJ1367 Buckytube. Computer artwork of a carbon nanotube, also known as a buckytube, showing the hexagonal carbon structure. This is a type of fullerene, a structural type (allotrope) of carbon. Fullerenes, which were first discovered in 1985 can be used as catalysts, lubricants and superconductors. Credit: Pasieka / Science Source

Folic Acid Supplements During Pregnancy Reduce Risk of Autism

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In the news: "Study Finds More Benefits of Folic Acid" by Roni Caryn Rabin New York Times February 12, 2013  SK6099 Vitamin B9, molecular model. The chemical formula for vitamin B9, also called folic acid or folate, is C19.H19.N7.O6. Atoms are represented as spheres and are color-coded: carbon (blue), hydrogen (gold), nitrogen (dark blue) and oxygen (red). Vitamin B9 is most concentrated in leafy vegetables such as spinach, legumes, seeds and other fruit and vegetables. It is required for fetal development in pregnancy. It also ensures normal red blood cell formation and helps to maintain a healthy central nervous system. Folate deficiency can lead to the development of forms of anemia and leukemia. Credit: Dr. Mark J. Winter / Science Source

Birds and Bees Do It...

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Animal Valentines Birds do it, bees do it, even educated fleas do it! And it's comforting to know that we all pretty much look equally ridiculous doing it, regardless of species!  So hide the children and enjoy Valentine's Dayfrom around the Animal Kingdom!

NA3340 Mating European bee-eaters (Merops apiaster) in the Danube Delta, Romania, in June. Credit: Berndt Fischer / Science Source

2013 State of the Union - Picture It

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In the news: "State of the Union 2013" Barack Obama February 12, 2013



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Endovascular Therapy has Disappointing Results

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In the news: "Widely Used Stroke Treatment Doesn't Help Patients" by Richard Knox NPR - shots Februaryy 8, 2013 SL3606 Stroke treatment. Colored angiogram of the brain of a 48 year old patient after treatment for a massive cerebrovascular accident (CVA), or stroke. The stroke occurred due to a blocked middle cerebral artery causing areas of ischemia (lack of blood flow) to parts of the brain (see image M136/0348). Here, blood flow has returned after the blockage was targeted with thrombolytic (clot-busting) drugs (urokinase) and anticoagulants (heparin) using a catheter. The symptoms, such as hemiparesis and aphasia (trouble producing and understanding speech), then begin to fade. Angiograms use a contrast dye to highlight blood vessels. Credit: Zephyr / Science Source

Vitamin D puts the D in Obesity

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In the news: "Link between obesity and vitamin D clarified" by Nathan Seppa Science News February 5, 2013 
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Obese woman working out in fitness class. Credit: Carolyn A. McKeone / Science Source
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