Soon, soundwaves may help find early dental decay

Washington, Aug 25 (ANI): Aussie researchers are developing a tool that can use sound waves to identify early stages of tooth decay by measuring the mineral content of teeth.

Tooth decay begins by acid-forming bacteria eating away at the enamel, causing minerals to leach from it, softening, and weakening the tooth.

Sometimes dentists can identify this demineralisation by seeing a change in the colour of the tooth, or by looking at x-rays.

They also use sharp probes that test the hardness of the enamel, and find where the rot has set in, but all such probes can be painful and cause unnecessary damage to the teeth.

But PhD researcher David Hsiao-Chuan Wang, from the University of Sydney, and colleagues are now developing a less invasive new technique to measure mineral content of teeth, using sound waves generated by laser pulses.

“We want to be able to be able to quantify mineral content of the dental enamel,” ABC Online quoted Wang as saying.

He added: “We can keep the laser power below a damaging threshold.”

Laser pulses aimed at the tooth set up a series of high frequency sound waves (ultrasound) that travel through the enamel surface, penetrating it to different depths.

As a soundwave moves through a demineralised part of the tooth, it changes its speed, which can be detected.

Each soundwave penetrates to different depths of the enamel, depending on its wavelength, enabling a profile of the tooth to be built up, showing where decay has begun.

The researchers first tested the system on different known materials, before testing it on extracted human tooth.

They still have to test the system on teeth in patients, but firstly they need to develop a convenient handheld device and obtain ethics permission to trial it in humans.

Wang said that a prototype of the hand-held device could be ready in two years.

Professor Ian Meyers of the Australian Dental Association has said that testing the technique in the mouth is important, as saliva affects the property of teeth enamel.

Meyers also said that when decay was detected early, fillings could be avoided by either stopping the demineralisation through better oral care.

Otherwise, it could also be possible to re-mineralise the tooth by using products specifically designed for this purpose.

He said that the new technique could add to the range of tools available for dentists to identify early stages of decay, as long as it is affordable

Wang has estimated that the new tool would cost “below 50,000 dollars”, and complement rather than replace conventional methods.

He said that the ultrasound technique would be particularly useful in research, especially in evaluating the effectiveness of remineralisation treatments.

The study has been published in the journal Optics Express. (ANI)

Scientists discover signaling pathway which ensures that plants remember to flower

Washington, August 21 (ANI): A team of scientists has discovered signaling pathway that ensures plants remember to flower, even without positive signals from the environment.

Scientists at the Max Planck Institute for Developmental Biology in Germany found the solution to the mystery that why do some plants blossom even when days are short and gray.

According to the researchers, an endogenous mechanism allows them to flower in the absence of external influences such as long days.

A small piece of RNA, a so-called microRNA, has a central role in this process, as a decline of its concentration in the shoot apex triggers flowering.

MicroRNAs are very short RNA snippets that have emerged in recent years as essential regulators of gene function in both plants and animals.

By binding to complementary motifs in a messenger RNA, they inhibit its translation into protein. This process thus blunts the activity of the corresponding gene.

In Tubingen, developmental biologists have discovered that the common wallcress, Arabidopsis, uses this regulatory mechanism to switch from vegetative to reproductive development.

A group of related regulators, the SPL proteins, play an important role in promoting the onset of flowering.

In young plants, high levels of microRNA156 prevent production of SPL proteins.

Jia-Wei Wang and colleagues demonstrate that independent of external cues, the concentration of the microRNA declines over time, like sand running through an hourglass.

When the microRNA concentration falls below a certain level, enough SPL proteins are produced to activate the flowering process even in the absence of other regulators that measure day length or external temperature.

This in turns allows a sufficiently old plant to flower, even in an unfavorable environment.

Interestingly, the SPLs do double duty, since they have supporting roles when plants flower in response to long days.

Furthermore, both the SPLs and other regulators eventually converge on a similar set of targets crucial for flowering.

According to Detlef Weigel, director at the Max Planck Institute for Developmental Biology, “Flowering is crucial for the long-term survival of plants. The redundancy of environment-dependent and independent mechanisms ensures that plants do not wait forever until flowering.” (ANI)

Scientists unveil new way to clinically assess condition of tooth enamel using lasers

Washington, August 19 (ANI): A collaborative study conducted by Australian and Taiwani researchers has led to a novel way to analyse the health of human teeth using lasers.

Described in the open-access journal Optics Express, the new approach involves measuring how the surface of a tooth responds to laser-generated ultrasound, which can help evaluate the mineral content of tooth enamel-the semi-translucent outer layer of a tooth that protects the underlying dentin.

This is the first time that any research team has been able to non-destructively measure the elasticity of human teeth, creating a method that can be used to assess oral health and predict emerging dental problems, such as tooth decay and cavities.

“The ultimate goal is to come up with a quick, efficient, cost-effective, and non-destructive way to evaluate the mineralization of human dental enamel,” says David Hsiao-Chuan Wang, a graduate student at the University of Sydney in Australia and first author on the paper.

For research purposes, “nano-indentation” is commonly used for gaining information on the elasticity of tooth enamel-a measure of its mineral content. However, nano-indentation destroys the measured regions of the enamel in the process and is only used to look at extracted teeth.

Wang and his advisor Simon Fleming, a physics professor at the University of Sydney’s Institute of Photonics and Optical Science, said that they wanted to develop a clinical method that would give as much information as nano-indentation and could be used to assess tooth enamel in actual patients while being completely non-destructive.

So, added the researchers, they developed a way to measure the elasticity of tooth enamel by adapting laser ultrasonic surface wave velocity dispersion, a method similar to what industrial engineers use to evaluate the integrity of thin films and metals.

They have revealed that their approach uses short duration laser pulses to excite ultrasonic waves that propagate along the surface, and penetrate only a small distance into a tooth.

The velocity of these waves is influenced by the elastic properties of the enamel on a tooth, and by detecting the ultrasonic waves with fibre optics at various points, they can determine the enamel’s elasticity, which is directly related to its mineralisation.

In their research article, the researchers have written that they could use this technique on extracted human teeth.

They admit that they have not yet tested the technique on a living person’s teeth, and that it will likely take several years before any eventual device is ready for use in the dentist’s office. (ANI)

Nanotechnology used for developing new DNA cancer test

Washington, Aug 18 (ANI): Johns Hopkins University researchers have developed a highly sensitive test to look for DNA attachments that are believed to be the early warning symptoms of cancer.

The research may make the detection and treatment of cancer much easier.

To reach the conclusion, scientists used tiny crystals called quantum dots.

The test, which detects both the presence and the quantity of certain DNA changes, could alert people who are at risk of developing the disease and could tell doctors how well a particular cancer treatment is working.

The development has been reported in a paper called “MS-qFRET: a quantum dot-based method for analysis of DNA methylation,” published in the August issue of the journal Genome Research. The work also was presented at a conference of the American Association of Cancer Research.

“If it leads to early detection of cancer, this test could have huge clinical implications,” said Jeff Tza-Huei Wang, an associate professor of mechanical engineering whose lab team played a leading role in developing the technique.

“Doctors usually have the greatest success in fighting cancer if they can treat it in its early stage,” the expert added.

To make the scientific breakthrough, Wang and his students developed the test over the past three years with colleagues at the Johns Hopkins Kimmel Cancer Center. (ANI)

China charges Rio Tinto Australia executive of commercial bribery

Beijing, Aug.12 (ANI): Chinese prosecutors have charged Australian executive Stern Hu with commercial bribery, which means he could be facing up to seven years jail if found guilty by Beijing.

China’s official news agency Xinhua said Hu and three Rio Tinto Chinese colleagues were charged late on Tuesday, six days after being detained in Shanghai.

According to the Xinhua website, prosecutors had approved the arrest of the four Rio Tinto workers, citing a statement by China’s Supreme People’s Procuratorate issued late yesterday.

According to the news.com.au web site, preliminary investigations have shown that the four employees, Stern Hu, Liu Caikui, Ge Minqiang and Wang Yong, had obtained commercial secrets of China’s steel and iron industry through improper means, which had violated the country’s criminal law.

Prosecutors had also found evidence to prove that they were involved in commercial bribery, it reported.

The Federal Government has indicated that charges against Hu have been downgraded from earlier claims that he had stolen state secrets.

The Department of Foreign Affairs and Trade (DFAT) confirmed today that Beijing had informed the Australian Consulate-General in Shanghai late yesterday of the charges against the Rio Tinto executive.

Beijing had previously accused Hu of spying and stealing state secrets in the context of annual iron ore negotiations.

The episode has caused friction between Australia and China though both governments have denied it will have a major impact on the relationship. (ANI)

Filipino inmates in `Thriller’ video stage tribute

CEBU, Philippines – The Filipino inmates who shot to global fame with a YouTube video of their “Thriller” dance swayed and stomped again Saturday in a behind-bars tribute to their idol, Michael Jackson.

After being told of Jackson’s death Thursday in Los Angeles, the 1,500 inmates at the Cebu Provincial Detention and Rehabilitation Center hit the exercise yard, practicing for nine hours Friday night — and into the wee hours of Saturday morning — for the show. They took breaks only to eat or when it rained, said professional choreographer Gwendolyn Lador, hired by the prison to teach the inmates the dance.

“I felt sad because we lost our idol,” said inmate Wenjiel Resane, who plays the role of Jackson’s girlfriend in the video.

Crisanto Nieri, 38, was feeling a little extra stress. He danced Jackson’s part in “Thriller.”

“Even as a kid, he was already my idol,” said Nieri, who is serving seven years on drug charges. “I am happy that our video became famous, but I feel some pressure to perform well.”

A crowd of 700 Cebuanos and foreign tourists watched the performance from a second-floor corridor, swaying to the music and applauding as the inmates, dressed in orange prison T-shirts and sweat pants, stomped and clapped in unison in the hilltop prison, behind thick stone walls topped by electrified razor wire.

Other numbers included “Ben,” “I’ll Be There” and “We Are the World.” The inmates then held up a 5-by-10 foot (1.5-by-3 meter) tarpaulin showing Michael Jackson holding a sword with his name written below it.

Others waved the flags of the Philippines and other nations.

Before the show, the performers dedicated a prayer to Jackson’s family.

“I was sad because one of the songs of Michael Jackson, `Thriller,’ made us famous around the world,” said Francis Mercader, 36, who has spent a year in detention while on trial for drug charges.

Byron Garcia, the Cebu provincial security consultant who came up with the idea of adding synchronized dancing to poorly attended exercise sessions, said he was surprised by the popularity of the 2007 video — one of more than a dozen inmate dance numbers he has posted on YouTube.

“Thriller” has attracted 24.3 million hits since it was posted two years ago, with nearly a million of them in the 24 hours since news of Jackson’s death spread.

The inmates “consider Michael Jackson as a god here,” Garcia said. “If not for Michael Jackson, they would not have this international recognition.”

“The fame brought them back their self-esteem,” he told reporters. “So that’s why we have these public performances.”

Inmate Alfredo Gaballo, 52, says Jackson “inspired us, so we are all sad about his death.”

“The performance today has been amazing,” said Karen Benrad, 29, from London. She and about two dozen foreign and local tourists later joined the inmates at the prison quadrangle, dancing to the tune of “Macarena” and “I just can’t get enough.”

Kim Hua-sung, a 23-year-old South Korean student in Cebu who watched the inmates’ performance, said he is also a Jackson fan. “I’m sad that I can’t listen to more songs from him.”

In Taiwan, two top Michael Jackson impersonators donned fedora hats and sequined outfits Saturday, moonwalking to “Billie Jean” in their own tribute to the pop star.

Thirty-year-old Wang Chih-wei told The Associated Press he secured a photo op with his idol during Jackson’s whirlwind tour in 1993 after winning an impersonation contest.

“I didn’t know much English so I could only tell him, ‘I love you,’” Wang said. “He was very friendly. I melted when he put his hand on my shoulder for the photo.”

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On the Net:

Performance of “Thriller” Video

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Associated Press writer Debby Wu contributed to this report from Taipei, Taiwan.

Source By – http://news.yahoo.com/s/ap/20090627/ap_en_ot/as_michael_jackson_dancing_inmates

Sino-US navies try to resolve maritime discords

New Delhi, May 15 (ANI): The Chinese and US navies have been searching for ways to “alleviate disagreements” over international law on maritime rights, a senior military source has said.

The source admitted the two militaries still disagree on how to interpret the international law concerning maritime waters. But both sides have “expressed their views candidly in the latest round of military exchange.”

The China Daily quoted the source as saying that in the latest exchange, US naval operations chief Admiral Gary Roughead and Chinese Navy chief Admiral Wu Shengli held talks in Qingdao last month during a sea parade to mark the 60th anniversary of the PLA Navy.

But some experts said the US navy will not stop spying activities in the western part of the Pacific, and reconciliation at sea may not be reached easily.

“The US has always wanted to maintain its influence in Asia through military means. It has conducted military activities around the Taiwan Straits and the East China Sea, and now wants to expand to the South China Sea,” said Professor Yuan Peng, an expert at the China Institute of Contemporary International Relations.

He added that the US is keen to see Southeast Asian countries in territorial disputes with China so that it can retain its influence in those countries and contain China’s rise.

Wang Hanling, a researcher on maritime affairs and international law at the Chinese Academy of Social Sciences, said Sino-US disputes at sea mainly arise from the different interpretation of items related to the “freedoms of navigation and over flight in an exclusive economic zone.”

US Admiral Robert Willard, new commander of the Pacific Fleet, said on Tuesday that the US is attempting to overcome disagreements with China after frank discussions between high-level US officials and their Chinese counterparts over recent confrontations at seas.

The two nations do not see eye to eye on the issue of maritime rights, but “we’re going to have to work our way through it … so they don’t continue to escalate,” Willard said on the sidelines of a regional naval conference in Singapore. (ANI)

China’s first emperor banned Buddhism, claims expert

New Delhi, May 12 (ANI): A researcher has said that the first emperor of a united China could go down in history not only for the Great Wall or the terra cotta army of guards and horses, but also for his attempt to crush Buddhism by banning it.

“China’s first and most influential history book, the Historical Records, stated clearly that Emperor Qin Shihuang (259 BC-210 BC) strictly banned Buddhism and Buddhist temples,” said Han Wei, a noted researcher with Shaanxi Provincial Institute of Archeology.

According to the Historical Records, the ban went alongside the emperor’s major military strategies including the deportation of the invading Huns, and applied far beyond the ancient capital Xianyang in today’s Xi’an to cover the whole country.

Though the book, written between 104 B.C. to 91 B.C., provided no evidence of temples destroyed or monks exiled, Han said he believed the ban had been very effective.

“Buddhism never appeared again in historical documents until 2 B.C.,” Han said.

Emperor Qin Shihuang’s ban on Buddhism indicated the religion was already popular in China’s interior regions in his reign, said Han, whose thesis on the subject was published rercently in Xi’an.

Han recommended that textbooks be changed to reflect his discovery.

Historians generally believed Buddhism was introduced into China around 67 A.D. in Han Dynasty that succeeded Qin.

But, Han held it must have spread to China from today’s Xinjiang Ugyur Autonomous Region and central Asian countries, along the ancient Silk Road, more than two centuries earlier.

Noted Silk Road archaeologist Wang Jianxin said that Han’s research finding, based on linguistic, historical as well as archeological studies, sounded “reasonable”.

“Another scholar raised the same hypothesis in the early 1900s,but couldn’t provide sufficient evidence,” Wang said. (ANI)

City-dwellers more likely to develop late-stage cancer than rural residents

Washington, May 11 (ANI): A new study has revealed that people who live in urban areas are at higher risk of developing late-stage cancer than those who live in suburban and rural areas.

The findings indicate a need for more effective urban-based cancer screening and awareness programs.

To explore the rural and urban differences in late-stage cancer diagnoses, Sara L. McLafferty, Ph.D., of the University of Illinois and Fahui Wang, Ph.D., of Louisiana Sate University analyzed data from the Illinois State Cancer Registry from 1998 to 2002.

The researchers assessed late-stage cancer diagnoses of the four major types of cancer (breast, colorectal, lung, and prostate) throughout the state, comparing data from cities with those from less-populated regions.

They found that for all four cancers, risk was highest in the most highly urbanized area (Chicago) and decreased as areas became more rural.

However, in the most isolated rural areas, risk was also high. Risks were considerably low among patients living in large towns in rural areas.

For colorectal and prostate cancers, and to a lesser extent breast cancer, these disparities stemmed mainly from differences in the ages and races of individuals in the various geographic areas.

A high concentration of vulnerable populations and economically disadvantaged areas in Chicago and its suburbs accounted for the high rates of late-stage diagnosis found in these highly urban areas.

Among the different races, the black population was particularly vulnerable to late diagnosis. On the other hand, the lower rates of late-stage diagnosis in rural areas reflected the greater presence of elderly patients who have a lower risk of late-stage diagnosis, likely because of frequent doctors’ visits and age-related cancer screenings.

Differences in age and race did not explain the geographic disparities seen for lung cancer, indicating that other factors-such as cancer awareness or diagnostic differences-account for the rural-urban differences in late-stage lung cancer diagnosis.

The researchers said that their study found a reversal of the commonly held view that late-stage cancer risks are highest for rural residents.

“The concentration of health disadvantage in highly urbanized places emphasizes the need for more extensive urban-based cancer screening and education programs, especially programs targeted to the most vulnerable urban populations and neighbourhoods,” they said.

The study is published in the June 15, 2009 issue of CANCER, a peer-reviewed journal of the American Cancer Society. (ANI)

New nanocrystal shows potential for cheaper and more versatile lasers

Washington, May 11 (ANI): Scientists at the University of Rochester, along with researchers at the Eastman Kodak Company, have created a nanocrystal that constantly emits light, which has potential for the development of cheaper and more versatile lasers and brighter LED lighting.

Many molecules, as well as crystals just a billionth of a meter in size, can absorb or radiate photons. But, they also experience random periods when they absorb a photon, but instead of the photon radiating away, its energy is transformed into heat.

These “dark” periods alternate with periods when the molecule can radiate normally, leading to the appearance of them turning on and off, or blinking.

“A nanocrystal that has just absorbed the energy from a photon has two choices to rid itself of the excess energy-emission of light or of heat,” said Todd Krauss, associate professor of chemistry at the University of Rochester and lead author on the study.

“If the nanocrystal emits that energy as heat, you’ve essentially lost that energy,” he added.

Krauss worked with engineers at Kodak and researchers at the Naval Research Laboratory and Cornell University to discover the new, non-blinking nanocrystals.

Krauss and Keith Kahen, senior principal scientist of Kodak, were exploring new types of low-cost lighting similar to organic light-emitting diodes, but which might not suffer from the short lifespans and manufacturing challenges inherent in these diodes.

Kahen, with help from Megan Hahn, a postdoctoral fellow in Krauss’ laboratory, synthesized nanocrystals of various compositions.

Xiaoyong Wang, another postdoctoral fellow in Krauss laboratory, inspected one of these new nanocrystals and saw no evidence of the expected blinking phenomenon.

Remarkably, even after four hours of monitoring, the new nanocrystal showed no sign of a single blink-unheard of when blinks usually happen on a scale of miliseconds to minutes.

After a lengthy investigation, Krauss and Alexander Efros from the Naval Research Laboratory concluded that the reason the blinking didn’t occur was due to the unusual structure of the nanocrystal.

Normally, nanocrystals have a core of one semiconductor material wrapped in a protective shell of another, with a sharp boundary dividing the two.

The new nanocrystal, however, has a continuous gradient from a core of cadmium and selenium to a shell of zinc and selenium.

That gradient squelches the processes that prevent photons from radiating, and the result is a stream of emitted photons as steady as the stream of absorbed photons.

With blink-free nanocrystals, Krauss believes lasers and lighting could be incredibly cheap and easy to fabricate. (ANI)

China and Taiwan agree to strengthen business relations

Beijing – Negotiators from Taiwan and China signed a series of agreements Sunday to increase cooperation and investment across the Taiwan Strait. Taiwan’s chief negotiator Chiang Pin-kung, chairman of the Straits Exchange Foundation, met Chen Yunlin from the mainland Association for Relations Across the Taiwan Straits in the southern city of Nanjing.

Taiwan agreed to clear the way for Chinese companies to do business on the island, the state-run news agency Xinhua reported.

“Taiwan sincerely welcomes mainland companies to invest on the island,” according to a foundation statement quoted in the report.

“The goal of economic normalization between the two sides is being realized,” Wang Yi, director of China’s State Council Taiwan Affairs Office, was quoted as saying.

The negotiators, meeting for the third time since China and Taiwan resumed talks last year, also signed three separate agreements.

The first would increase the frequency and routes of cross-strait direct flights, Xinhua reported.

There would now be a total of 270 flights per week, up from 108, and new routes from Guangzhou and Shanghai to Taipei, as well as from Hefei, Harbin, Nanchang, Guiyang, Ningbo and Jinan.

In the second agreement, the two sides reportedly pledged to work together to fight cross border crimes including drugs and human trafficking, and economic crimes involving fraud, money laundering, forging or falsifying currencies and securities.

According to Xinhua, negotiators from both sides will also now consider cases where there are discrepancies between Chinese and Taiwanese laws.

Chen and Chiang also signed an agreement for a cooperative financial regulatory mechanism aimed at overseeing banking, securities, futures and insurance sectors across the Strait.

Under this agreement, financial organizations would be allowed to do business across the straits, and a currency-clearing system will gradually be set up, the report said.

The latest agreements build on six previous joint actions since last June which first saw the establishment of weekend charter flights, and the expansion of cross-strait postal and shipping. (dpa)

Now, nanoneedle to help examine biological processes of living cells

Washington, Apr 29 (ANI): Researchers from University of Illinois have developed a nanoneedle that will help in examining biological processes occurring within living cells.

“Nanoneedle-based delivery is a powerful new tool for studying biological processes and biophysical properties at the molecular level inside living cells,” said Min-Feng Yu, a professor of mechanical science and engineering and corresponding author.

During the study, he described how they deliver, detect and track individual fluorescent quantum dots in a cell’s cytoplasm and nucleus.

These quantum dots can be used for studying molecular mechanics and physical properties inside cells.

To create a nanoneedle, the researchers begin with a rigid but resilient boron-nitride nanotube. The nanotube is then attached to one end of a glass pipette for easy handling, and coated with a thin layer of gold.

The molecular cargo is then attached to the gold surface via “linker” molecules.

When placed in a cell’s cytoplasm or nucleus, the bonds with the linker molecules break, freeing the cargo.

“The nanoneedle provides a mechanism by which we can quantitatively examine biological processes occurring within a cell’s nucleus or cytoplasm,” said Yang Xiang, a professor of molecular and integrative physiology and a co-author of the paper.

“By studying how individual proteins and molecules of DNA or RNA mobilize, we can better understand how the system functions as a whole,” Xiang added.

The ability to deliver a small number of molecules or nanoparticles into living cells with spatial and temporal precision may make feasible numerous new strategies for biological studies at the single-molecule level, which would otherwise be technically challenging or even impossible.

“Combined with molecular targeting strategies using quantum dots and magnetic nanoparticles as molecular probes, the nanoneedle delivery method can potentially enable the simultaneous observation and manipulation of individual molecules,” said Ning Wang, a professor of mechanical science and engineering and a co-author of the paper.

“Nanoneedles can be used as electrochemical probes and as optical biosensors to study cellular environments, stimulate certain types of biological sequences, and examine the effect of nanoparticles on cellular physiology,” said Yu.

The study appears in Nano Letters (ANI)

Chinese police apologizes for arresting blogger

Beijing, Apr. 18 (ANI): A Chinese police officer has publicly apologized for arresting a blogger, who wrote against a local party for illegally acquisitioning farmland.

“I would like to apologize to Wang and his family as I am partly responsible for the incident. There was not enough evidence to arrest Wang Shuai on defamation charges,” the China daily quoted Qin Yuhai, Director of Henan Provincial Public Security Bureau, as saying.

The 24-year-old Shanghai resident had accused the city government of Lingbao, his hometown in Henan province, of illegally acquiring farmland.

Wang said he had reported the city government’s misuse of farmland for developing an industrial zone, to the local Land Administration Bureau. Wang received no response from the authority even after six months, and so had decided to express his views on his blog.

The Lingbao police traveled to Shanghai and arrested Wang on March 6. He was detained for eight days on charges of defamation, but was later released on bail.

“One can only be charged for defamation when the accusation is completely made-up and is intended to harm the public. Wang’s action doesn’t match any of the criteria,” Qin said.

Later the Municipal Public Security Bureau of Lingbao issued a press release saying that the department will send someone to apologize to Wang personally.

Wang will be compensated as per the State Compensation Law, the release stated.

“The personnel responsible for his detention will be punished. We recognize that the Internet is the ‘new channel’ for public opinion,” Quin said. (ANI)

8ft tall Chinese circus performer may be world’s tallest man

London, April 17 (ANI): An 8ft 1in tall man in China, who staggered staff at a hospital when he went there for a foot operation, may be the world’s tallest man.

Zhao Liang, 27, is a circus performer. His father is 5ft 11in and mum Wang Keyun 5ft 6in tall.

If Liang’s stature is confirmed, it would mean that he is nearly 4in taller than fellow 7ft 9in countryman Bao Xishun, 58, who holds the current Guinness world record.

Liang mother revealed how her son consumes three meals, and eight giant buns every day for lunch.

“I am so worried about his marriage, his job and his health that my hair has turned white,” the Mirror quoted her as saying.

However, doctors who examined him in Tianjin, northern China, say that he is perfectly healthy and his foot surgery was a success.

Liang, who lives in central China’s Henan province, was a promising basketball player until the foot injury a decade ago.

He was unemployed until he joined the circus troupe in 2006.

He performs magic tricks and plays the flute and sax. (ANI)

China, Taiwan to discuss cross-Straits relations

Beijing, Apr. 15 (ANI): In a bid to improve cross-Straits relations, China’s mainland negotiator Chen Yunlin and his Taiwan counterpart Chiang Pin-kung are planning to hold a new round of talks in April or May.

“The talks between the mainland’s Association for Relations Across the Taiwan Straits (ARATS) and the Taiwan-based Straits Exchange Foundation (SEF) will focus on joint efforts to crack down on crime, regular cross-Straits flights, financial cooperation and judiciary assistance,” State Council Taiwan Affairs Office spokesman Li Weiyi said at a press conference. he two sides are also expected to discuss mainland investment in the island. Progress has already been made through exchanges of experts from both organizations,” the China Daily quoted Li, as saying.

Li Weiyi added that Chinese Premier Wen Jiabao would meet a delegation from the Taiwan-based Cross-Straits Common Market Foundation during the upcoming Boao Forum for Asia Annual Conference 2009.

Head of the Taiwan Work Office of the Communist Party of China (CPC) Central Committee Wang Yi, would also meet Taiwan delegates at a round-table discussion on cross-Straits financial cooperation on the sidelines of the forum.

The ARATS and SEF are authorized by the mainland and Taiwan to handle cross-Strait exchanges. Negotiations had been suspended for almost 10 years until June 2008 when Chen and Chiang held their first meeting in Beijing.

The forthcoming meeting will be the third round of talks held between the ARATS and the SEF. (ANI)

Obama, Hu stress crisis response in first meeting, AS

BEIJING (AP) President Barack Obama and his Chinese counterpart, Hu Jintao, promised to work together to renew global growth and build a strategic partnership but did not discuss Beijing’s unease about its holdings of U.S. debt and other disputes in their first meeting at the London economic summit. Obama accepted an invitation to visit Beijing this year and the two leaders agreed to create a new U.S.-China Strategic Economic Dialogue, said a senior American official who briefed reporters in London.

The official said Obama agreed during the meeting Thursday on the need to change the International Monetary Fund to give China and other developing countries an “an appropriate role” but the two leaders did not discuss details. A bigger voice in managing the world’s finances is a key Chinese demand, and Beijing has suggested its contribution to global bailout efforts will be contingent on receiving it.

“The presidents agreed that the strong links between China and the U.S. economies have been a great mutual benefit, both in terms of trade and investment, and they were eager to build on that,” said the official, who talked on condition of anonymity in line with U.S. government policy. “Each side explained what they were doing and the goals they had in mind, and just expressing the importance that we, together, stimulate our economies and get growth going,” the official said.

The Strategic Economic Dialogue, due to meet later this year, succeeds a twice-a-year forum begun under former President George W. Bush to address a wide range of disputes over trade and other issues. The new forum, held once a year, is to be led by U.S. Secretary Clinton and Treasury Secretary Timothy Geithner and, on the Chinese side, by Vice Premier Wang Qishan and State Counselor Dai Bingguo.

Hu and Obama avoided U.S.-Chinese disputes, possibly to avoid fueling public pessimism about the global ecomomy. They did not discuss Beijing’s unease about the safety of its vast holdings of U.S. government bonds and its proposal last month for a global currency to replace the dominant dollar, according to the American official.

“There was no mention of either of those two subjects,” the official said. Hu and Obama also avoided expressing their government’s criticisms of each other’s stimulus plans.

Beijing is uneasy that Washington’s heavy spending might fuel inflation and weaken the dollar and has appealed to Obama to steps that might erode the value of China’s estimated $1 trillion in U.S. government debt. Washington needs Beijing to help finance its stimulus by buying more U.S. Treasury securities, and other Western governments want Chinese money to help finance a global bailout fund.

China has said its biggest contribution to a recovery will be to ensure strong growth in its own economy, the world’s third-largest. “There was not a detailed discussion of stimulus,” the official said.

However, he said Obama expressed awareness of the risks of higher inflation from stimulus spending and promised to bring down the U.S. budget deficit after economic growth revives.

Obama, Hu stress crisis response in first meeting, AS

BEIJING (AP) President Barack Obama and his Chinese counterpart, Hu Jintao, promised to work together to renew global growth and build a strategic partnership but did not discuss Beijing’s unease about its holdings of U.S. debt and other disputes in their first meeting at the London economic summit. Obama accepted an invitation to visit Beijing this year and the two leaders agreed to create a new U.S.-China Strategic Economic Dialogue, said a senior American official who briefed reporters in London.

The official said Obama agreed during the meeting Thursday on the need to change the International Monetary Fund to give China and other developing countries an “an appropriate role” but the two leaders did not discuss details. A bigger voice in managing the world’s finances is a key Chinese demand, and Beijing has suggested its contribution to global bailout efforts will be contingent on receiving it.

“The presidents agreed that the strong links between China and the U.S. economies have been a great mutual benefit, both in terms of trade and investment, and they were eager to build on that,” said the official, who talked on condition of anonymity in line with U.S. government policy. “Each side explained what they were doing and the goals they had in mind, and just expressing the importance that we, together, stimulate our economies and get growth going,” the official said.

The Strategic Economic Dialogue, due to meet later this year, succeeds a twice-a-year forum begun under former President George W. Bush to address a wide range of disputes over trade and other issues. The new forum, held once a year, is to be led by U.S. Secretary Clinton and Treasury Secretary Timothy Geithner and, on the Chinese side, by Vice Premier Wang Qishan and State Counselor Dai Bingguo.

Hu and Obama avoided U.S.-Chinese disputes, possibly to avoid fueling public pessimism about the global ecomomy. They did not discuss Beijing’s unease about the safety of its vast holdings of U.S. government bonds and its proposal last month for a global currency to replace the dominant dollar, according to the American official.

“There was no mention of either of those two subjects,” the official said. Hu and Obama also avoided expressing their government’s criticisms of each other’s stimulus plans.

Beijing is uneasy that Washington’s heavy spending might fuel inflation and weaken the dollar and has appealed to Obama to steps that might erode the value of China’s estimated $1 trillion in U.S. government debt. Washington needs Beijing to help finance its stimulus by buying more U.S. Treasury securities, and other Western governments want Chinese money to help finance a global bailout fund.

China has said its biggest contribution to a recovery will be to ensure strong growth in its own economy, the world’s third-largest. “There was not a detailed discussion of stimulus,” the official said.

However, he said Obama expressed awareness of the risks of higher inflation from stimulus spending and promised to bring down the U.S. budget deficit after economic growth revives.

The sexagenarian who can do 97 push-ups a minute!

New Delhi, Mar 27 (ANI): A 63-year-old Chinese woman can do 97 push-ups within a minute.

Huang Tianleng, resident in Wenjiang district of the city, has been exercising since 2002, reports China Daily.

Her exercise routine includes push-ups for one to two hours every morning, which has made Tianleng strong enough to do 97 push-ups within 60 seconds.

She had also wanted to challenge a man who could do 100 push-ups.

“I learned that a man named Wang Jiyue in our city can do 100 push-ups within one minute, I want to challenge him,” she added. (ANI)

Defecting spy tells US that China spends most of its time stealing secrets

Washington, Mar.19 (ANI) The Chinese intelligence service spends most of its time not only trying to steal secrets from overseas but also on ways to bolster Communist Party rule by repressing religious and political dissent internally, claims a spy who has defected to the United States.

“In some sense you can say that intelligence work between two countries is just like war but without the fire,” Li Fengzhi told The Washington Times in an interview aided by an interpreter.

Li worked for years as an Ministry of State Security intelligence officer inside China before defecting to the United States, where is he awaiting a response to his request for political asylum.

He gave a rare, detailed interview to The Times on Sunday regarding the activities of the MSS, China’s Communist-controlled civilian spy agency.

His prior work as a Chinese spy was confirmed to The Times by a Western government source familiar with his defection.

The source spoke on the condition of anonymity because of the sensitivity of Li’s case.

Li told The Times that the MSS focuses on both counterintelligence – working against foreign intelligence agencies – and the collection of secrets and technology.

The MSS, however, is unique from other nations’ intelligence services in that it is patterned after the former Soviet Union’s KGB political police.

Its most important mission is “to control the Chinese people to maintain the rule of the Communist Party,” he added.

Wang Baodong, a spokesman for the Chinese Embassy in Washington, did not address Li’s comments directly but repeated past Chinese government statements regarding its intelligence activities.

“Allegations of China conducting spying activities against the United States are groundless and unwarranted,” he said.

Li said he left China’s intelligence services to protest the agency’s role in government repression of political dissidents and religious groups that are outside of the ruling communist system.

In the interview, he also said:

China’s spy agency is focused on sending spies to infiltrate the U.S. intelligence community, and also on collecting secrets and technology from the United States.

China is censoring the Internet to prevent the population from knowing about what occurs outside the country.

An internal MSS manual that is kept secret from most officers outlines the primary role of the service as the promotion of Communist Party’s interests.

Ongoing cooperation between the CIA and FBI and the MSS in countering international terrorism can be constructive, but U.S. agencies need to be cautious because the MSS is mainly an organ of the Chinese Communist Party, and does not directly serve the interests of the Chinese nation or people.

Li was born in 1968 in northern China and was first recruited into a provincial Chinese intelligence service before being promoted to the MSS in Beijing after several years. (ANI)

Slimmer nanorods may revolutionise 3-D computer chip technology

Washington, Mar 18 (ANI): Scientists have developed a new technique for growing slimmer copper nanorods, a breakthrough that can pave the way for advanced integrated 3-D chip technology.

The researchers have found a new method to grow slimmer copper nanorods, which can be used as a low-temperature bonding agent for holding together the layers of next-generation 3-D integrated computer chips.

Researchers at Rensselaer Polytechnic Institute have discovered that interrupting the nanorod growth process results in thinner copper rods that fuse together, or anneal, at about 300 degrees Celsius.

The relatively low annealing temperature could make the nanorods ideal for use in heat-sensitive nanoelectronics, particularly for “gluing” together the stacked components of 3-D computer chips.

“When fabricating and assembling 3-D chips, and when bonding the silicon wafers together, you want as low a temperature as possible,” said Pei-I Wang, research associate at Rensselaer’s Center for Integrated Electronics.

He added: “Slimmer nanorods, by virtue of their smaller diameters, require less heat to anneal. These lower temperatures won’t damage or degrade the delicate semiconductors. The end result is a less expensive, more reliable device.”

Experimental 3-D computer chips are comprised of several layers of stacked components.

The researchers claimed that such layers can be coated with thin nanorods, and then heated up to 300 degrees Celsius.

Around that temperature, the thin nanorods anneal, turn into a continuous thin film, and fuse the layers together.

According to Wang, the study was the first demonstration of slimmer nanorods enabling wafer bonding.

The study has been reported in the journal Nanotechnology. (ANI)