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When Viruses Infect Bacteria

By Guest PostJuly 9, 2011Sciencebacterial dna, bacteriophages, coevolution of a virus and its host, flu virus, human hosts, in vitro, microfluidic technology, national science foundation, phages, plant hosts, prophage, rob phillips, termite, termite hindgut, tobacco mosaic virus, viral dna, virus bacterium interactions, viruses, viruses infecting bacteria

*Looking in vivo at virus-bacterium associations sets stage for better understanding of such interactions in human health*

Viruses are the most abundant parasites on Earth. Well known viruses, such as the flu virus, attack human hosts, while viruses such as the tobacco mosaic virus infect plant hosts.

More common, but less understood, are cases of viruses infecting bacteria known as bacteriophages, or phages. In part, this is due to the difficulty of culturing bacteria and viruses that have been cut off from their usual biological surroundings in a process called in vitro. (more…)

‘Combining Therapies Appears Safe, May Benefit Patients with Advanced Liver Cancer’

By Guest PostJuly 9, 2011Healthadvanced primary liver cancer, bayer healthcare, cancer, chronic hepatitis c infection, cirrhosis, diarrhea, drugs, epidemics of obesity and diabetes, fatigue, hcc, hepatocellular carcinoma, hepatologists, inflammation, james caridi, liver cancer, metabolic syndrome, nonalcoholic fatty liver disease, onyx pharmaceuticals, paul martin, roniel cabrera, side effects, skin reactions, sorafenib, transarterial chemoembolization, tumor feeding blood vessels, tumors, type of liver cancer, unexpected toxic effects, united states, university of florida, university of miami, viable treatment options, world health organization

GAINESVILLE, Fla. — Few treatments exist for patients with advanced primary liver cancer, but University of Florida researchers have found a new way to broaden the range of options and potentially improve health outcomes by combining two treatments.

In the first study of its kind, the researchers combined sorafenib, the only Food and Drug Administration-approved pill for treating advanced liver cancer, with another routinely used therapy known as transarterial chemoembolization, which works by cutting off the blood supply to tumors. No unexpected toxic effects were seen, and the combo appears to have the potential to improve survival for certain groups of patients. (more…)

Being Small Has Its Advantages, If You Are a Leaf

By Guest PostJuly 8, 2011Natureeffects of embolism, leaf veins, leaves venation systems, patterns of veins, size of leaves, smaller leaves, vein systems

The size of leaves can vary by a factor of 1,000 across plant species, but until now, the reason why has remained a mystery. A new study by an international team of scientists led by UCLA life scientists goes a long way toward solving it. (more…)

Children Who Seldom Smile, Laugh or Hug a Parent Might be at Risk for Depression

By Guest PostJuly 8, 2011Healthamy gentzler, charles george, children, daniel shaw, history of depression, hugging a parent, laboratory assessment, maria kovacs, negative emotions, negative moods, nestor lopez duran, positive displays, positive emotions, smiling and laughing, thomas olino, university of michigan, university of pittsburgh, vulnerability to depressive disorders

ANN ARBOR, Mich.— A new study from the University of Michigan and the University of Pittsburgh shows that even if a child isn’t crying, frowning or displaying other negative emotions on a consistent basis, another warning sign is when a child shows fewer positive displays, like hugging a parent or smiling and laughing.

“Surprisingly, it seems that it is low levels of happiness, as opposed to high levels of sadness, what may help explain why these kids too often develop depressive disorders,” said Nestor Lopez-Duran, an assistant professor of psychology at U-M and one of the study’s authors. (more…)

Earliest Image of Egyptian Ruler Wearing “White Crown” of Royalty Brought to Light

By Guest PostJuly 8, 2011Culture, Generalakap, archaeologists, aswan, aswan kom ombo archaeological project, belgium, cutting edge digital methodology, dynasty 0 and narmer, egypt, egyptian crown, egyptian dynastic power, egyptian ruler, egyptian western desert, egyptologists, epigraphic survey in luxor, fifth dynasties, following of horus, gatto and antonio curci, Germany, hieroglyphic annotation, hieroglyphic text, human and divine power, image, italy, john coleman darnell, labib habachi, maria carmela gatto, nag el hamdulab, nag el hamdulab scenes, northern nubia, palermo stone, pharaonic cycles, predynastic jubilee, provinciale hogeschool of limburg, royal court, royal economic control, royal jubilee, royal pharaonic jubilee, the nile, university of bologna, west bank, white crown, yale university

The earliest known image of an Egyptian ruler wearing the “White Crown” associated with Egyptian dynastic power has been brought to light by an international team of archaeologists led by Egyptologists from Yale University.

Carved around 3200 BCE, this unique record of a royal celebration at the dawn of the Egyptian dynastic period was found at a site discovered almost a half-century ago by Egyptologist Labib Habachi at Nag el-Hamdulab, on the West Bank of the Nile to the north of Aswan. (more…)

Mastering Disaster: Students Create Software to Save Lives

By Guest PostJuly 7, 2011Technologybosnia and herzegovina, brazil, chulalongkorn university, claire bonilla, czech republic, dam collapse, disaster victims, echo project, edward g happ, European Union, Facebook, flood, floodsim project, floodwaters, geographical information assistant, global positioning system, igor peric, imagine cup, imagine cup 2011, international red cross and red crescent societies, jon perera, kriangkrai pipatvilaikul, largest student technology competition, maps, microsoft sponsored event, nethope, new york city, northern thailand, pdas, personal digital assistants, smartphone application, social networks, software projects, spread of cholera, spu, team gina, terra, thailand team newkrean, tsunami, world, zbynek poulicek

*At the Imagine Cup 2011 Worldwide Finals, dozens of student teams showcase software projects that in some cases are already improving disaster relief efforts.*

REDMOND, Wash. – July 7, 2011 – When floodwaters swept across northern Thailand last fall, Kriangkrai Pipatvilaikul knew he had to help. So he boarded a bus with fellow students from Chulalongkorn University and went to a devastated village he had seen on TV.

The students joined scores of volunteers arriving at the same village with food, water and medical supplies. As they helped with the relief effort, the group heard about a harder hit area, one that hadn’t made the news, and they decided to push on. What they found shocked them. As they paddled through the submerged town, desperate villagers surrounded their boat and tried to grab whatever food they could. The students realized no other volunteers had been there despite the short distance from the previous site. (more…)

Cassini Captures Images and Sounds of Saturn Storm

By Guest PostJuly 7, 2011Scienceandrew ingersoll, austrian academy of sciences, california institute of technology, cassini, cassini spacecraft, cloud, earth, georg fischer, graz, hemispheres, iowa city, journal nature, jupiter, NASA, northern hemisphere, pasadena, pictures from cassini, saturn storm, saturn storm watch, solar illumination, storm alley, university of iowa, weather on saturn

PASADENA, Calif. — Scientists analyzing data from NASA’s Cassini spacecraft now have the first-ever, up-close details of a Saturn storm that is eight times the surface area of Earth.

On Dec. 5, 2010, Cassini first detected the storm that has been raging ever since. It appears approximately 35 degrees north latitude of Saturn. Pictures from Cassini’s imaging cameras show the storm wrapping around the entire planet covering approximately 2 billion square miles (4 billion square kilometers). (more…)

Warming Ocean Layers Will Undermine Polar Ice Sheets

By Guest PostJuly 6, 2011Environmentantarctic ice sheets, atmospheric warming, climate models, future ocean warming, global warming, greenhouse gases, greenland, jianjun yin, joellen l. Russell, nature geosciences, overpeck, polar ice sheets, the university of arizona, undermine polar, underwater, warming air, warming ocean layers, warming of the ocean's subsurface layers, warming seawater

*The UA-led research, based on climate models, shows that melting of the ice sheets will occur in this century and next.

Warming of the ocean’s subsurface layers will melt underwater portions of the Greenland and Antarctic ice sheets faster than previously thought, according to new University of Arizona-led research. Such melting would increase the sea level more than already projected.

The research, based on 19 state-of-the-art climate models, proposes a new mechanism by which global warming will accelerate the melting of the great ice sheets during this century and the next. (more…)

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*The UA-led research, based on climate models, shows that melting of the ice sheets will occur in this century and next.