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BEIJING, Oct. 20 (Xinhuanet) -- British scientists used bacteria and DNA to build basic components for digital devices in a new research, according to media reports, suggesting biological computers come closer to reality.Digital devices are based on logic gates, fundamental building blocks in silicon circuitry, said Professor Richard Kitney, leading researcher of the research published in the journal Nature Communications, "Without them, we could not process digital information."According to Science Daily, Professor Kitney and his colleagues from the Imperial College London replicated the building blocks using bacteria and DNA, forming biological logic gates, which paved the way for building more complex biological processors in the future.The researchers hoped biological computers can be applied to monitoring human health in the future.They believed that small biological processors, inserted in human bodies, could roam inside the bodies, monitor the health, and correct any problems they found.These biological logic gates are the most advanced created by scientists. But there is still a long way to go to apply them in reality, said Professor Kitney.

BEIJING, Jan. 10 (Xinhuanet) -- Conflicts among hundreds of scalpers raring to stock up on the new iPhone 4S are casting a shadow over the gadget's launch on the Chinese mainland on Friday.Over the weekend, scalpers from two groups bickered and shoved each other when standing in line to purchase iPhone 4 at Apple's Sanlitun store, said witnesses.Workers from two Apple stores in Beijing told China Daily the stores have not started online bookings for the iPhone 4S so far."More than 1,000 of us have gathered to buy all the available iPhone 4 this morning," said a scalper hawking the phone outside the Sanlitun store on Sunday."We'll come again on Friday for iPhone 4S. You'll have no hope of getting an iPhone 4 or 4S from the store, but only from us."The scalpers are asking 4,450 yuan (705 U.S. dollars) for an 8-gigabyte iPhone 4, and 5,450 yuan for a smuggled iPhone 4S. Apple sells an 8-gigabyte iPhone 4 on the mainland for 3,988 yuan.An Apple employee at the Sanlitun store who declined to give her name told China Daily on Monday that the store was aware the scalpers may be planning to besiege the iPhone 4S launch, and the store has prepared for that.Calls to the public relations office of Apple China went straight to voice mail.Police of the Sanlitun police station refused China Daily's interview request.An officer of the property management company of the Sanlitun Village shopping mall, where the store is located, said on Sunday they had not been informed about the weekend fracas outside of the Apple store.But on Monday afternoon, staff members of the company dispersed the scalpers by sealing off part of the store's entrance.Workers at the Sanlitun store and property management staff confirmed two groups of scalpers fought on Saturday afternoon and Sunday when jumping the line or stopping each other to pay to get an iPhone 4.Since October 2010, Apple has ceased direct sales of iPhone 4 at its retail outlets in Beijing and Shanghai and is only accepting online orders or reservations and schedules pick-up at stores to curb rampant scalping.But the registration system for reserve and pick-up has become "momentarily unavailable because of heavy traffic volume" in recent days, said Apple's website.A scalper in his 30s outside the Sanlitun store boasted they had "hacked" Apple's reservation page. He described himself an "unofficial salesman" of Apple.Defending the actions of scalpers that lead to consumers having to pay more, he said "it's not our fault but Apple's, because they put too few products in the mainland market."This is not the first time scalpers have targeted Apple products.Two men and two women suffered minor injuries outside the Sanlitun store during a clash between a worker and angry customers as Apple fans waited to buy iPhone 4 and the newly released iPad 2 in May 2011.According to reports, the incident started when a worker confronted an alleged scalper for jumping the line. This led to a verbal conflict in which the alleged scalper was thrown against the corner of an outside wall, causing injuries to his face and wrist

WASHINGTON, Dec. 7 (Xinhua) -- The use of two drugs never tried in combination before in ovarian cancer resulted in a 70 percent destruction of cancer cells already resistant to commonly used chemotherapy agents, say researchers at Mayo Clinic in Florida.Their report, published on-line Wednesday in Gynecologic Oncology, suggests that this combination, ixabepilone and sunitinib, might offer a much needed treatment option for women with advanced ovarian cancer.Neither drug is approved for use in ovarian cancer. Ixabepilone is a chemotherapy drug that, like other taxane drugs, targets the microtubules and stops dividing cells from forming a spindle. It has been approved for use in metastatic breast cancer. Sunitinib, approved for use in kidney cancer, belongs to a class of tyrosine kinase inhibitors that stops growth signals from reaching inside cancer cells.When caught at late stages, ovarian cancer is often fatal because it progressively stops responding to the chemotherapy drugs used to treat it."Women die from ovarian cancer because their tumors become resistant to chemotherapy, so a drug that might be able to reduce that resistance -- which may be what this combination of agents is doing -- would be a boon to treatment of this difficult cancer," says study coauthor Gerardo Colon-Otero.The finding also highlights the importance of the role of a molecule, RhoB, that the researchers say is activated by the drug duo. It might be a potential biomarker that may help identify patients who might benefit from such combination therapy, the researchers say.

WASHINGTON, Dec. 16 (Xinhua) -- The U.S. International Trade Commission (USITC) Friday launched a probe into certain products from China after several U.S. companies alleged their patents were infringed.The products in question include televisions and Blu-ray players produced by Haier Group of China and Vizio Inc. under Taiwan-based Amtran Technology Company and sold in the U.S. market, the USITC said.` Five U.S. technology companies filed a complaint with USITC last month, saying those products violated Section 337 of the Tariff Act of 1930 by infringing their patents.Meanwhile, they requested the USITC issue an exclusion order and a cease and desist order against those products from China.The trade panel is scheduled to set a target date for completing the investigation within 45 days after institution of the probe. If the complaint is approved, the agency will ban importation of those products.The U.S. move came at a time when protectionism is making a comeback in the United States amid sluggish economic recovery.It is widely believed that such actions would only hurt U.S.- China trade relations that are increasingly critical to global economic recovery.

BEIJING, Nov. 20 (Xinhua) -- Chinese Vice Premier Li Keqiang visited HIV/AIDS medical personnel, volunteers of non-government organizations (NGOs), and people living with HIV ahead of the World AIDS Day which falls on Dec. 1.In the voluntary testing clinic of the Beijing Diseases Prevention and Control Center (CDC), Li said counseling and testing are crucial to the early detection and early treatment of HIV/AIDS, and encouraged the clinic staff to work hard on the very front-line of HIV prevention and control.While visiting NGOs situated in the Beijing CDC, Li greeted people living with HIV and volunteers, shaking hands with them. He recognized the role of NGOs in keeping the disease at bay, particularly in terms of HIV/ AIDS awareness education and intervention.Chinese Vice Premier Li Keqiang (C) talks with a HIV/AIDS medical personnel as he visits the voluntary testing clinic of the Beijing Diseases Prevention and Control Center (CDC), in Beijing, China, Nov. 18, 2011.Li said HIV prevention and control is a systemic project that takes the entire society to carry out, calling for establishing a mechanism to involve "social forces" into HIV prevention and control.Li asked health authorities at all levels to keep close contact with HIV-related NGOs, providing assistance needed to these organizations and their volunteers."Care, respect and assistance are the best pain relievers for people living with HIV," Li said, calling upon the entire society to pay greater attention and care to this group of people.

来源：资阳报