Tag: "frozen" at biology news
Making the most of stem cells
...e stored and transported in a cryopreserved state, frozen
to -320 degrees Fahrenheit, the temperature of their liquid nitrogen storage bath. But when scientists thaw the cells for use in the lab, less than 1 percent awake from their frigid slumber and assume their undifferentiated state. This 'blank slate'...
Study shows benefits to newborns from federal ban on insecticides
...s' birth weight and length. All blood samples were frozen
and stored at -70 degrees Centigrade in order to e... pesticides. Subsequent analyses were performed on frozen
samples at three different times -- spring 2001, summer 2002 and fall 2002. They found that pr...
New human embryonic stem-cell lines to be made available to researchers
...d his colleagues with the excess, pre-implantation frozen
embryos from which the stem-cell lines were derived. Funding for the research and construction of the research facilities in which the stem-cell lines were derived was provided by HHMI, Harvard and the Juvenile Diabetes Research Foundation. Melton ha...
Stanford study questions identity of alleged Romanov bones
...vered in the original analyses. Knight agrees that frozen
DNA is more stable but points out that Ekaterinburg - which is at the same latitude as Moscow and just north of Kazakhstan - can reach 100 degrees Fahrenheit in July and August. Meanwhile, as scientists squabble over finer details of the forensic ana...
Human health, astronomy, and environmental concerns merge at Dark-Sky meeting
...resenters will talk about their experiences on the frozen
continent. Arlo Landolt was in the first group to winter over at the South Pole, many years ago, and will tell about the "First Winter in Antarctica." Comet astronomer David Levy was in Antarctica last summer for the total solar eclipse, and descr...
Capturing cell protein production in action could help fight antibiotic resistance
...roscopy uses a sample in solution which is rapidly frozen
by plunging it into liquid ethane and maintaining it at the same temperature as liquid nitrogen," he explains. "This maintains the 3D structure of the molecule and gives you instant access to the cellular process of interest. Also, the effect of free...
RNA inner workings partly unveiled in Stanford study
...th. The automated screening system stores the tiny frozen
crystals on nylon loops at the end of metal pins. A robotic arm retrieves each pin and aligns the crystal in the path of the X-ray beam. The robot can automatically test 300 samples without the need for researchers to carry out a manual transfer for ...
Comets spread Earth-life around galaxy, say scientists
...selves in the radiation-shielded surface layers of frozen
comets. A belt of such comets, the Edgeworth-Kuiper belt, lies beyond the planetary system. This belt gradually leaks comets into interstellar space, some of which will eventually reach proto-planetary discs and star-forming nebulae. There they are d...
New findings are a window into the late stages of 'Lou Gehrig's' disease
...dic ALS and 2 with familial ALS. All samples were frozen
tissues were dissected to separate gray and white matter and isolate total RNA. DNA microanalysis wa...
The Rosetta space probe's long trek to Comet 67P/Churyumov-Gerasimenko
...ithin about 500 million kilometres of the Sun, the frozen
gases that envelop it will evaporate and a trail of dust will be blown back over hundreds of thousands of kilometres. When illuminated by the Sun, this characteristic comet tail then becomes visible from Earth. In the course of the mission, the proce...
UN report: Accelerate global agreement to oversee exploitation of South Pole 'extremophiles'
...tion in cold climates, extending the shelf life of frozen
food, improving surgery involving the freezing of ...ease the shelf life of foods such as ice-cream and frozen
vegetables. The report notes that developing commercial products from naturally occurring genetic r...
A possible new form of 'supersolid' matter
...solid in the sense that all its helium-4 atoms are frozen
into a rigid crystal lattice, much like the atoms and molecules in a normal solid such as ice. The difference is that "frozen," in this case, doesn't mean "stationary." Because helium-4 lattice is so very cold, less than one tenth of a degree above...
Study finds evidence for global methane release about 600 million years ago
...ane gas was apparently derived from the melting of frozen
methane clathrate crystals that had accumulated beneath the seafloor. "The extremely negative isotopic values from these sediments provide unambiguous evidence for methane-derived carbon," said Ganqing Jiang, a researcher at the University of Califor...
NASA scientists discover spring thaw makes a difference
...tion of Earth's carbon invegetation, in seasonally frozen
and permafrost soils. Large expanses of boreal for...re underlain by permafrost, a layer of permanently frozen
soil found underneath the active, seasonally thawed soil. "Frozen soil can store carbon for hundre...
Down that long dusty trail
... said. But, liquid water could be found under the frozen
polar caps, he added. Climate changes on Mars, as with all of the nine planets that orbit the sun, are tied to its obliquity, or tilt of its axis with respect to its orbital plane. Nealson and his colleagues proposed that as the Red Planet tilted e...
Link between alcohol consumption and muscle damage in females
...usculature) was dissected into various regions and frozen
immediately and stored until analysis. Study 2: Effects of acute ethanol exposure and of raising endogenous acetaldehyde with cyanamide. Rats were divided into the following groups: saline+saline (n=7); cyanamide+saline (n=7); saline+ethanol (n=7);...
Max Planck Research awards 2003 presented
...the frost heave of a pipeline built on permanently frozen
soil. Two scientists were awarded the Max Planck Research Award 2003 in Mathematics: - Prof. Stephan Luckhaus from the Mathematics Institute at the University of Leipzig for his trail blazing model showing clear cut solutions for the transport of w...
Estrogen receptor-a disruption and vasodilation in coronary arteries
... isolated from the myocardium, as noted above, and frozen
in microcentrifuge tubes. Because there was insufficient protein in a single mouse coronary artery to allow measurement of protein content and still have sufficient sample to run on an SDS gel, it was necessary to pool samples of coronary arteries fr...
Explanation offered for Antarctica's 'blood falls'
... is just another lobe of Lake Bonney that has been frozen
over, or maybe it was a different lake, like Bonne...ers strange behaviors. Most Antarctic glaciers are frozen
to the rock below but Taylor apparently isnt, Lyons said. That could be because there are salt depos...
Story tips from the Department of Energy's Oak Ridge National Laboratory, November 2003
...se colony will be rederived from stocks of embryos frozen
in special freezers chilled by liquid nitrogen. The stock consists of more than 900 strains, some dating back to the 1940s. Strains for which there is funding about 300 -- will be brought back to life. The new mice will be housed in ORNL's brand new...
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