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Freeze in Biological News

Killer freeze of '07 illustrates paradoxes of warming climate

OAK RIDGE, Tenn., March 5, 2008 -- A destructive spring freeze that chilled the eastern United States almost a year ago illustrates the threat a warming climate poses to plants and crops, according to a paper just published in the journal BioScience. The study was led by a team from the Department...

Technique may allow cancer patients to freeze eggs, preserving fertility before starting treatment

A new technique might allow women diagnosed with cancer the opportunity to have children when chemotherapy and radiation treatments rob them of their fertility, researchers at the University of Michigan Comprehensive Cancer Center have found. By having her eggs frozen before she begins cancer tr...

Jet-propelled imaging for an ultrafast light source

...les) and fits to the side of the beamline's vacuum chamber. After passing through the beam, the liquid droplets and the gas (typically carbon dioxide) freeze in a trap opposite the injection point, without significantly reducing the vacuum. In 2008 Spence and his colleagues, including Berkeley Lab's Dav...

Spring cold snap helps with stream ecosystem research

... OAK RIDGE, Tenn., July 23, 2009 -- A rare April freeze in 2007 provided researchers at the Department of ...over the next several months. This early April freeze resulted in positive effects for a well-studied Ea...nvironmental Sciences Division. In this case, a freeze caused the Walker Branch stream to prosper, but an...

Fossil evidence of missing link in the origin of seals, sea lions, walruses found in Canadian Arctic

...icate this location during the Miocene had a cool, coastal temperate environment, similar to present-day New Jersey. Given that freshwater lakes would freeze in the winter, it is likely that Puijila would travel over land to the sea for food. The transition from freshwater to saltwater in semi-aquatic mam...

Ancient ecosystem thrives millions of years below Antarctic glacier

...m contains a diversity of bacteria that thrive in cold, salty water loaded with iron and sulfur. The water averages 14 degrees Fahrenheit, but doesn't freeze because the water is three or four times saltier than the ocean. The scientists made a breakthrough discovery when they learned that the bacteria ...

Case Western Reserve University engineers hit pay dirt with clay mixture

.... Schiraldi says almost anyone can make the composites if they have pure clay in a form that resembles cat litter pellets, a blender and a $50,000 freeze dryer. The researcher bought his equipment with $75,000 he won in the 2005 North Coast Nanotechnology Business Idea Competition that encouraged ...

Recession Puts Focus on Business Optimisation and Excellence to Strengthen Business Core

...their companies through the recession. The usual strategy of following the "order of practice of the industry" would be to review headcount, freeze and reduce budgets and other radical cost-cutting measures. The consequence of overreacting to this, is that it may handicap a company’s future ...

Freezing prostate cancer does a man's body good

...entional radiologists insert a probe through the skin, using imaging to guide the needle to the tumor; the probe then circulates extremely cold gas to freeze and destroy the cancerous tissue. This minimally invasive treatment targets only the cancer itself, sparing healthy tissue in and around the prostate ...

Scientists create tough ceramic that mimics mother of pearl

...nisms, are expelled and entrapped in the space between the layers. The resulting architecture roughly resembles that of nacre. "Since seawater can freeze like a layered material, we allowed nature to guide the process by which we were able to freeze-cast ceramics that mimicked nacre," said Tomsia when t...

Captain Birdseye's robotic nose

... The Captain can't freeze smelly fish that's past its best - and Icelandic scientists can now help him out by detecting the levels of stench-making bacteria faster than ever be...

Remote technology sees through ice, snow and hot air to monitor power plants

...ill study the frozen cooling lake at a traditional gas-powered plant in Midland, Mich. It's the only cooling lake in the United States large enough to freeze because it was originally created for a nuclear facility never built. Infrared sensors flown overhead can detect and "read" hot water plumes discha...

Tiny invasive snail impacts Great Lakes, alters ecology

...it their expansion," says Levri. "That means that recreational water users must be very careful moving from one place to another. We advise anglers to freeze waders and fishing gear, or use Formula 409 or something like that to kill the snails." He notes that signs are beginning to mark areas in New Yor...

AGU journal highlights -- August 6, 2008

...ange reducing hail over China? Hail, defined as precipitation of balls or irregular lumps of ice produced by storm clouds, forms when liquid drops freeze at altitudes above a threshold called the "freezing level height". If drops cannot be formed above the freezing level, precipitation will remain in a ...

Antarctic fossils paint a picture of a much warmer continent

...l pond, everything else around them frozen over--and then, wham!, they went too. And it must have happened quickly because these fossils are literally freeze dried. When I visited the scientists in the field, they showed me how the moss was still green and leafy." "It is one of the most dramatic and long...

Sun to set on Ulysses solar mission on July 1

... over the years, so they have come up with ingenious ways of conserving energy. Now, however, the power has dwindled to the point where fuel will soon freeze in the spacecraft's pipelines. "When the last bits of data finally arrive, it will surely be tough to say goodbye to Ulysses," said Nigel Angold, ...

Pregnancy is possible after cancer treatment

... this sort and the women become infertile. The Erlangen physicians succeeded in removing healthy ovarian tissue from the woman before treatment and to freeze it. The patient was then given the recommended cancer treatment. She tolerated this well and has not suffered any relapse. On the other hand, her mens...

Food biotechnology: real world challenges

...ally modified crops have been widely adopted by American farmers. In spite of their use in the United States, the European Union (EU) imposed a 6-year freeze (19982004) on growing and importing transgenic crops. In 2002, transgenic food aid to African nations was rejected by the recipient governments. The...

Will global warming increase plant frost damage?

... Widespread damage to plants from a sudden freeze that occurred across the Eastern United States fro...nic and Atmospheric Administration, found that the freeze killed new leaves, shoots, flowers, and fruit of n...udy suggest that global warming could lead to more freeze and thaw fluctuations in future winters. This patt...

Extract of broccoli sprouts may protect against bladder cancer

... PHILADELPHIA A concentrated extract of freeze dried broccoli sprouts cut development of bladder tumors in an animal model by more than half, according to a report in the March 1 issue of Cancer Re...

New research suggests biofuel blending is often inaccurate

... for the inconsistencies. Improper blending of biofuels could lead to engine problems from drivers in cold climates, Reddy noted, because it could freeze or clog fuel lines. Most auto manufacturers recommend against using mixtures greater than B20, though the reasons are unclear. Reddy believes the d...

'Smart' holograms help patients help themselves

...iversity, has already developed a hand-held syringe to measure water content in aviation fuel tanks necessary because aeroplane engines are liable to freeze mid-air if there is more than 30 parts water to million fuel. The same ability to detect chemical imbalances could be used by diabetics to check th...

Cornell patents a pink lily look-alike that blooms all summer long

... Cornell, can last for two weeks in a vase, but when left in the garden, it blooms all summer long in the cooler, northern states until the first hard freeze in the fall. The new hybrid of the Inca lily ( Alstroemeria ), which was developed by a Cornell professor, is a non-fragrant perennial that is set ap...

Penn researchers shine the light of venus to learn how the herpes virus invades cells

...uld not demonstrate the split-second interaction. Penn researchers hypothesized that the encounter might be too brief and decided to look for ways to freeze it long enough to take a snapshot. Knowing that virus-cell fusion starts when gD binds to a cell receptor, these researchers monitored the remaini...

New form of compound stimulates research on hydrogen storage

...can be stabilized by chemical substitutions even at ambient pressure. For now, the teams next step is to apply chemical engineering to the compound to freeze the new form at ambient conditions and check whether it shows more favorable hydrogen storage properties than pure lithium borohydride. Despite the ...

Genetic differences in clover make one type toxic

...disadvantage. To examine both the weather factor and suicide possibility, Olsen and his colleagues are testing different types of clovers in freeze chambers at controlled temperatures to see if survival is higher for either acyanogenic or cyanogenic plants. The advantage of the clover cy...

HortTalks, a valuable scientific resource

...their desktop computers. Topics recorded at the 2007 Annual Conference include: Small Fruit and Grape Crop Injury Across the U.S. from the Historic freeze in April 2007; Transgenic Horticultural Crops: Challenges and Opportunities; Breeding Horticultural Crops for Sustainable and Organic Production; High...

Beyond batteries: Storing power in a sheet of paper

... a liquid salt, as the batterys electrolyte. Its important to note that ionic liquid contains no water, which means theres nothing in the batteries to freeze or evaporate. This lack of water allows the paper energy storage devices to withstand extreme temperatures, Kumar said. Along with use in small han...

Mutation improves memory, may lead to memory-enhancing pill

... a mild foot shock or are exposed to a tone paired with a foot shock. Their memory for the earlier bad experience is determined based on how much they freeze in response to the "scary" place or sound 24 hr later. Importantly, the researchers also showed that treatment of animals with a small molecule t...

Freeze! Scientists film proteins at work by freezing them at different states

...imetics is an exciting possibility for developing future drugs. In order to produce the film, the team used the ESRF-IBS “Cryobench?laboratory to freeze the protein in three different states while the reaction took place. In order to make sure that they “trapped?the right intermediate states, the resea...

Fast-freeze snapshot yields new picture of nerve-muscle junction

...echnique described in the new study, high-pressure freeze electron microscopy and immuno-gold staining, now ...aboratory in New York, developed the high-pressure freeze technique to view synapses while working in the la... fraction of a second when using the high-pressure freeze method. What's more, during gluteraldhyde fixation...

What animals can tell us about hemorrhage, organ transplants and aging

...ds of miles to understand how they fuel their metabolisms for grueling transoceanic flights They slog through wetlands, studying frogs that literally freeze during the winter, then hop away in the spring as though nothing unusual occurred Comparative physiologists study all kinds of animals -- bears,...

Iowa State researchers improving plastics made from corn and soy proteins

...ewell knows a lot about: he worked 12 years in research and development for the Branson Ultrasonics Corp. of Danbury, Conn. He has used ultrasonics to freeze strawberries, process rice and handle many other applications. The researchers are also using microcellular foaming technologies from Trexel Inc....

Researchers report technique for freezing and preserving genetically enhanced pig embryos

...can be transplanted to a surrogate. Swine embryos have been difficult to freeze and preserve because of their sensitivity to cold due to a high level of li...lls of the embryos. It was expected that it would be even more difficult to freeze and preserve swine embryos that had been produced by in vitro methods. D...

New technology addresses female fertility preservation

... Women at risk for infertility, such as those needing cancer treatment, can freeze mature, fertilized eggs, but the process can take up to six weeks and for some this delay of treatment is not an option. Immature follicles (the fem...

Researchers discover which organs in Antarctic fish produce antifreeze

...al fluids in notothenioids are about one-half as salty as seawater. While seawater reaches its freezing point at ?.91 degrees Celsius, fish fluids freeze at about ? degree Celsius. These species dwell in water that rarely rises above the freezing point and is regularly filled with ice crystals. From ...

New egg freezing technique offers hope to hundreds of women

...nd sperm cells and embryos. "For decades men have had the opportunity to freeze sperm prior to treatment for malignant diseases, and thousand of babies hav...vivor of cancer treatment. With the current techniques, women would need to freeze hundreds of oocytes in order to have a reasonable chance of obtaining a chi...

Chromosomal abnormalities in sperm higher after vasectomy reversal

...female genital tract may select the best sperm for fertilisation. "But this is still uncertain, and until we know more it would probably be safer to freeze ejaculated sperm before vasectomy. We need a lot more evidence and research on this issue before we can be certain of avoiding the dangers." ...

Discovery may speed forest biotechnology

...say, reflect a critical tradeoff between tree growth and survival. Temperate trees have to stop growing and go dormant in the winter or they literally freeze to death. "From an evolutionary perspective, it's easy to understand why forest trees don't flower and produce seed and pollen earlier," Strauss sa...

Secrets of the sea yield stronger artificial bone

...hetic substance is extremely difficult. Then, the Berkeley Lab researchers thought of sea ice. "We allow nature to guide the process. Seawater can freeze like a layered material, so why not use this property to cast ceramics that mimic nacre," says Antoni Tomsia of Berkeley Lab's Materials Sciences Divi...
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