Tag: "thaw" at biology news
For first time, brain cells generated in a dish
... cells and freeze them until we need them. Then we thaw
them, begin a cell-generating process, and produce a ton of new neurons." If the discovery can translate to human applications, it will enhance efforts aimed at finding ways to use large numbers of a person's own cells to restore damaged brain functi...
Israeli scientists successfully transplant frozen-thawed ovaries in sheep
...ible in a large animal species, to remove, freeze, thaw
and replace ovaries, obtain oocytes and maintain n...ective was to see if they could remove, freeze and thaw
the right ovary from eight sheep, including the vascular pedicles (the attachment that contains the ...
UC faculty members break new ground while treading gently on the Alaskan tundra
...ndscape changes of the North Slope, especially the thaw
lakes of Alaska. Thaw lakes are shallow lakes formed by local thaw
action. About 20 percent of the land is covered by thousands of lakes -- the land looks like Swiss c...
Lands surface change on Alaska tundra creating longer, warmer summers in Arctic
...Epstein said that since the early 1960s the spring thaw
in Alaska's tundra country is arriving an average of 2.3 days earlier each decade. As a result, plants in the region now "leaf out" about 2.7 days earlier than in previous decades. Likewise, the first freeze each year is arriving slightly later, allo...
Most of Arctic's near-surface permafrost to thaw by 2100
... covered by this topmost layer of permafrost could thaw
by 2050 and as much as 90 percent by 2100. Scientists expect the thawing to increase runoff to the Arctic Ocean and release vast amounts of carbon into the atmosphere. The study, using the NCAR-based Community Climate System Model (CCSM), is the firs...
US woman gives birth to baby from world's first frozen donor egg bank
...rizona. The technology to successfully freeze and thaw
donor sperm for infertile couples has been available for decades. However, the technology to successfully freeze women's eggs did not exist until recently, prompting Cryo Eggs International (CEI) to open its doors and offer donor eggs to infertile pa...
Siberian lakes burp 'time-bomb' greenhouse gas
...osition." "Permafrost models predict significant thaw
of permafrost during this century, which means tha...and used it to quantify methane emissions from two thaw
lakes in North Siberia. As they walked across the frozen lakes they mapped locations and types of d...
Ecological change, climate variation addressed at international conference, September 20-24
...elt: Geochemical evidence of increasing permafrost thaw
in the Arctic Despite evidence of Arctic warming....These measurements of the maximum depth of summer thaw
in soils are traditionally made using steel probes, which are limited in their use.Working at the Ar...
Alaska study offers strategies to mitigate climate warming
...owered regional water tables, increased permafrost thaw
and subsequent thermokarsts, which contribute to the failure of roads, homes and other infrastructure. "We took stock of these changes and from that we assessed what society is going to need to respond to these changes," said Gary Kofinas, co-au...
Alaska graduate receives nation's top dissertation honor
...t melts. Her data demonstrated that North Siberian thaw
lakes are a significantly larger source of methane than previously recognized and are largely fueled by thermokarst. Walter's results suggest an important positive feedback to global warming and are expected to improve the accuracy of climate models....
Studies to find better ways to preserve human eggs, ovarian tissue under way
...dding that ice formation aside, it is difficult to thaw
rock-solid tissue at room temperature in a matter of seconds, meaning the current approach could have extremely limited use. A study he published in March 2000 in Nature Biotechnology showed the approach he uses works well, at least in blood vessel...
First baby is born after oocytes were matured in the lab and frozen
...imulated ovaries, mature them in vitro, freeze and thaw
them and then achieve pregnancies and live births, without the risk of aggravating the patients hormone-sensitive disease, delaying their treatment for cancer or re-instituting a metastatic malignant disease, he concluded. ...
Climate change and permafrost thaw alter greenhouse gas emissions in northern wetlands
... temperatures are accelerating rates of permafrost thaw
in northern regions, says MSU researcher Merritt Turetsky. In the report, The Disappearance of Relict Permafrost in Boreal North America: Effects on Peatland Carbon Storage and Fluxes, in this weeks online edition of Global Change Biology, Turetsky...