2007年11月28日星期三
Sell Stainless Steel Wire
http://buy-or-sell.org/Chemicals/Sell-Stainless-Steel-Wire-_7JCoRFT/
2007年11月27日星期二
IBM Doubles Down Lotus Sametime 8
Technical Analysis: Bears Fire a Warning Shot
Sell Sponge Product
http://buy-or-sell.org/Chemicals/Sell-Sponge-Product-ZGVhOKXV/
Transplants Without Tears
By Mitch Leslie
ScienceNOW Daily News
26 November 2007
Bone marrow transplants can ameliorate diseases such as sickle cell anemia by replenishing hematopoietic stem cells (HSCs) that spawn white and red blood cells. But before they receive this marrow, patients must typically undergo conditioning, a course of chemotherapy (and sometimes radiation) that wipes out immune cells that might attack the transplants and eliminates the existing, faulty HSCs. However, conditioning also devastates stem cells throughout the body, triggering hair loss, diarrhea, mental decline, and other side effects.
Searching for a gentler approach, postdoc Deepta Bhattacharya and immunologist Irving Weissman of the Stanford University School of Medicine in Palo Alto, California, and colleagues dosed mice with an antibody that ties up c-kit, a receptor on the surface of HSCs that promotes their division and survival. The antibody sent the number of HSCs in the animals' bone marrow plunging by more than 98%26#37; after 8 days, the researchers report. That seemed to clear space for new cells to rebuild the animals' immune systems. Six months after a bone marrow transplant, 90%26#37; of one type of immune cell were derived from transferred HSCs, the team found.
Weissman envisions that an HSC-removing antibody will be part of a two-pronged attack on illnesses such as sickle cell anemia, severe combined immunodeficiency, aplastic anemia, and thalassemia. First, patients would receive antibodies to suppress immune cells that might reject a bone marrow transplant; such antibodies are already in use, although they can cause flulike symptoms and other side effects. Then, an HSC-deleting antibody would make room for new stem cells. Weissman cautions, however, that researchers need to find a human antibody that performs as well as the mouse version. But if successful, the strategy could eliminate the need for chemotherapy and radiation and allow transplants for diseases, such as type 1 diabetes, multiple sclerosis, and lupus, in which traditional conditioning was considered too drastic.
"It's an intriguing new approach," says stem cell biologist and clinician David Scadden of Harvard Medical School in Boston, Massachusetts. But stem cell biologist Kateri Moore of Mount Sinai School of Medicine in New York City questions whether the antibody removes all HSCs. She notes that even without a transplant, HSC numbers rebound in mice within about 3 weeks of an antibody dose. Any HSCs spared by the antibody, she warns, could compete with newcomers for space or even produce T cells that attack the transplants.
Sell High Quality Maternity Wear
http://buy.buy-or-sell.org/Apparel/Sell-High-Quality-Maternity-Wear-rbD4nEHB/
Cream Quality Asian Size Summer Used Cloth
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HP, Scalent Team For Rapid Virtual Server Deployment
2007年11月26日星期一
FCC Moves To Fund Rural Broadband
2007年11月25日星期日
American Rice: Out of Africa
By Erik Stokstad
ScienceNOW Daily News
16 November 2007
When slaves were brought to the American colonies from west Africa, they often grew various kinds of rice in small gardens to feed themselves. Rice became a cash crop for plantation owners, however, with the advent of a high-quality variety of rice in 1685. The variety came to be known as Carolina Gold, and for good reason. By 1720, rice was South Carolina's most valuable export. But from where did the key cash crop come?
The first reported import in the New World of what is thought to be Carolina Gold occurred in 1685, when a slave ship from Madagascar unloaded a cargo of rice in Charleston, South Carolina. That suggested that the rice came from that island nation off the east coast of Africa, or that, perhaps, it came from Asia and was picked up at a port on the way to America. Africa has an indigenous rice, Oryza glaberrima, which may have been domesticated about 1500 B.C.E. along the upper Niger River. It spread to west Africa, and when the first Portuguese explorers reached Guinea in 1446, they found extensive fields. Perhaps Carolina Gold descended from this plant.
To trace the origins of the crop, rice geneticist Anna McClung of the U.S. Department of Agriculture (USDA) in Stuttgart, Arkansas, and molecular geneticist Robert Fjellstrom of the USDA in Beaumont, Texas, searched the USDA Rice Germplasm Collection for varieties with a molecular marker, RM190, for a gene that controls the starch content in Carolina Gold. This marker turned up in fewer than 1%26#37; of the varieties.
To narrow the search, they next looked for 43 other molecular markers in Carolina Gold. McClung and Fjellstrom found one variety that shared 42 markers. Called Bankoram, it had been sent to the USDA collection in 1972 from a seed bank in Ghana. "It's nearly a perfect match," McClung says, who presented the results last week at the annual meeting of the American Society of Agronomy in New Orleans, Louisiana. When the researchers grew the Bankoram seed, the plant was very similar to that of Carolina Gold. The finding suggest that Carolina Gold came from west Africa, just like the slaves who cultivated it.
McClung stresses that the research is preliminary. She can't yet rule out, for example, the possibility that Carolina Gold may have been taken back to Africa and wound up in the seed bank in Ghana. "There are a lot of things we need to nail down," she says. But geographer Judith Carney of the University of California, Los Angeles, says a Ghanaian origin of Carolina Gold fits with the idea that Carolina Gold arrived in the colony as food on slave ships and was then planted by the slaves.
2007年11月23日星期五
Sell Geophysical Exploration Technical Services
http://buy-or-sell.org/Business_Services/Sell-Geophysical-Exploration-Technical-Services-_0vjdBdO/
Looking for agent of public furniture
http://buy-or-sell.org/Business_Services/Looking-for-agent-of-public-furniture-4lilu5W2/
Watch Out For The Online Shopping Grinch
- Too good to be true? "The very key thing: If an offer looks too good to be true, it probably is," McDowd said. These e-mails are often phishing scams, where the link connects to a site that downloads some type of malicious software onto the computer without the user knowing.
- Look for professionalism Misspellings and typos in e-mails are a dead giveaway. Also, when visiting an online store, look for a privacy policy. Any legitimate e-commerce site will have one.
- Check for signs of encryption In the site's URL, look for "shttp" or "https," which indicates that the purchase is secured or encrypted. Encryption scrambles your credit-card number and other data that you submit to guard against a hacker intercepting it en route. The closed padlock in the browser's status bar is also a sign of encryption.
- It's cyberspace, not outer space %26#150; Earth rules apply McDowd warns that online criminals are becoming more sophisticated, increasingly including logos and other graphics in their e-mails that convince recipients that the sender is legitimate. However, no legitimate organization will ask consumers to update their information online, he said. Just as you wouldn't give out your Social Security number to someone who calls your house claiming to be from a credit bureau, don't respond to e-mails asking for personal or account information.
- Consider the sender One cunning scam that McDowd said is on the rise involves online greeting cards. Just as with other phishing scams, an e-greeting message will have a link for users to click that might take them to a site where they will be exposed to malware. The commonsense rule is harder to apply here, because an e-mail simply alerting recipients that someone has sent them an e-card from American Greetings seems innocuous enough, unlike the too-good-to-be-true offers from faux retailers. The best defense is to not click the link unless the e-card comes from someone you know.
- Fine-tuning Now is a good time to tune up the junk mail settings in your e-mail to filter out messages from known spammers and phishers. And don't forget your operating system. Make sure it's updated and enable automatic updates to receive the latest security updates. And finally, use a credit card to make purchases rather than a check card. Consumer loss is generally more limited with credit cards if the account is used to make fraudulent purchases.
2007年11月22日星期四
Latest Visual Studio Ready Ahead of Schedule
Google's Search Lead Still Growing
2007年11月10日星期六
Steer Horn Or Cow Horn
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Snail Rearing
http://buy.buy-or-sell.org/Agriculture/Snail-Rearing-60sqemiJ/
Buy Slaughter House equimpents
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Sell Cargo Tricycle
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Sell XL-D07 300A - 500A x 2.5m Booster Cable
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Sell N95 nokia 8800
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Looking For Interested Investors For Garments Industry
http://buy-or-sell.org/Apparel/Looking-For-Interested-Investors-For-Garments-Industry-qAuNGpWM/
Look For Cooperation On Glove
http://buy-or-sell.org/Apparel/Look-For-Cooperation-On-Glove-AQEjab26/
2007年11月9日星期五
'Facebook Fridays' Enrich Enterprise Software Firm
wish cooperate with foreign garment buyer or company
http://buy-or-sell.org/Apparel/wish-cooperate-with-foreign-garment-buyer-or-company-7ZKhPMpc/
Sell Ladies' Jacket
http://buy-or-sell.org/Apparel/Sell-Ladies-Jacket-_ZDH-gsn/
Sell two toe socks
http://buy-or-sell.org/Agriculture/Sell-two-toe-socks-iVxIEXKj/
IBM Announces Mainframe Tools For SOA Development
2007年11月8日星期四
Cisco Sinks Big-Cap Techs
2007年11月5日星期一
How Much Open Source Are You Using?
2007年11月2日星期五
Cisco Acquisition Portends Bigger Things
Sell Industrial Product Design(MultifunctionalKnife)
http://buy-or-sell.org/Manufacturing/Sell-Industrial-Product-DesignMultifunctionalKnife-ngCOh2Dd/