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"It's no coincidence that the Asian giant is the world's largest coal user. The world's fastest-growing economy is also the world's fastest-growing coal market, accomplishing what no other nation has by navigating industrialization, urbanization and modernization all at once.

China uses coal to fuel approximately 80 percent of its electricity for basic needs and for providing the steel that creates the foundation for its fast-growing cities. It is expected to use more electricity than the entire Western Hemisphere in as little as the next two decades as hundreds of millions of citizens transition from rural to urban lifestyles.

More steel is going into the ground in China than anywhere else in the world: In fact, China consumed enough iron and steel last year to rebuild the entire U.S. commercial air fleet. Perhaps that's why China accounts for more than 60 percent of the global metallurgical coal market, most of which is used domestically for steel production."

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"Photo of a coal mine in Mongolia: Flickr/Wolfiewolf"

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Highway to Datong China, near Mongolian border

China, Mongolia plan to jointly build new highway for coal transportation

"China and Mongolia plan to jointly build new highway for coal transportation
English.news.cn 2010-10-05 15:12:46

HOHHOT, Oct. 5 (Xinhua) -- A new highway linking China and Mongolia is expected to be jointly built by the two countries with a total investment of 2.51 billion yuan (around 375 million U.S. dollars), local authorities said Tuesday.

The new highway is planned to be 245 kilometers in length and will run from Mongolia's southwest Omnogovi Aymag Province to Ganqimaodu, a border town in China's Inner Mongolia Autonomous Region, said a regional government official.

Two firms from China and Mongolia plan to set up a joint venture, which will be the main builder of the highway. The Mongolia firm will own 51 percent of the joint venture while the China firm the remaining 49 percent.

Construction of the highway is scheduled to be completed in two years.

The project plan had been submitted to the authorities of the two countries respectively, the official said.

The new highway was expected to improve coal transportation between the two countries, as well as promote economic development in China and Mongolia, the official said.

Trade between China's Inner Mongolia Autonomous Region and Mongolia reached 5.33 billion U.S. dollars and jumped 33.5 percent year on year over the first eight months of this year. As of Sept. 22, around 5.24 million tonnes of coal had been transported to China via Ganqimaodu."
 
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Construction starts on new nuclear generator in east China's Fujian

"Construction starts on new nuclear generator in east China's Fujian
English.news.cn 2010-10-03 22:08:06

FUZHOU, Oct. 3 (Xinhua) -- Ningde Nuclear Power Plant in southeast China's Fujian Province has begun building its fourth generator, the company said Sunday.

It is the last of the four generators in the first phase of construction.

The nuclear power plant will begin operating in 2012; making it the first of its kind in the province.

The nuclear plant is expected to generate 30 billion kWhs of electricity every year; guaranteeing to provide a quarter of the province's annual power consumption, when all four generators are in full operation by 2015.

The nuclear plant will also save 12 million tons of coal every year or the equivalent of about 30 million tons of greenhouse gas emissions.

Ningde nuclear power plant, co-funded and jointly run by Guangdong Nuclear Power Group, Datang International Power Generation Co. Ltd., and Fujian Energy Group Co. Ltd, started the construction of its first generator in 2008.

Another nuclear power plant in the province, Fuqing Nuclear Power Plant, is also expected to commence construction of its fifth and sixth generators before the end of this year. It is expected to start operating in 2013.

Editor: Fang Yang"
 
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SCMP
Changing countryside sees growing number seek return of rural hukou
Mandy Zuo in Zhejiang
Oct 05, 2010

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Two decades ago, many parents in the countryside of Zhejiang province were willing to spend 10,000 yuan each to buy their child an urban hukou, or permanent residential registration. As urban residents, they would be better educated and, afterwards, have access to better jobs.
Although Zhejiang was one of the richest provinces, 10,000 yuan was more than a year's income for a rural family.



But today, the situation has changed. A survey by Zhejiang authorities this year showed the number of farmers transferring their hukou to urban areas last year was 67 per cent lower than in 2004.

Bruce Huang, a college graduate who runs an online shop in Yiwu, Zhejiang, said it was much better to live in the village where he was born than to move to the city.

"In the village you have your acquaintances all around," he said. "More importantly, unlike those young men in the cities, most of whom have to pay for housing loans every month, here you can have a big four-storey house with a terrace."

Thus began the battle of Huang and his peers to regain their rural hukou, which had been transferred to urban areas when they were admitted to university. One of the issues for them is that, with urban hukou, they would not be recognised as rural property owners and would not be compensated if their homes in the countryside were demolished for whatever reason.

Once a small county, Yiwu has recently developed into China's commodity distribution hub. Many villages have been rebuilt and absorbed into the city since the local government started a project to expand its urban area in 1999, Huang's birthplace, Shencun village, among them.

Before 2003, students from rural areas were required to transfer their hukou to the city of their university once they were admitted. Then the policy was changed, allowing rural students to decide whether to change their hukou before going to college. When that happened, Huang said, "90 per cent of the students [in Yiwu] chose to keep their rural hukou".

Huang was one of those affected by the pre-2003 policy. Since May, he and about 100 other college graduates in the same situation have been writing to local government departments and holding demonstrations to demand their rural hukou back.

Although family household registration has been around in China since the Xia dynasty (21st-16th century BC), the government introduced the current hukou system in 1951 to regulate migration by tying people to their places of birth. After China opened up in 1979, farmers flooded to the cities, seeking benefits to which they had no access at home.

An individual's hukou today is still the key to various aspects of life. It determines not only how many children a family may have and which schools they may attend, but also property ownership. It's that last aspect that is bringing even bigger benefits for rural residents.

"I wouldn't bother if getting back my rural hukou can earn me 15,000 yuan [HK$17,260], which I can make by working for maybe one year," Huang said. "But it's actually a matter of 5 million yuan, which I can't possibly make in my lifetime."

If his hukou were transferred back to Shencun, his family would be allotted an extra 90 square metres of land to build a new house if the existing one were demolished.

"Selling this 90 square metres of land means about 1 million yuan, as the average land price in Yiwu's suburbs is 13,000 yuan per square metre," Huang said. "And if I use this land to build a 4-1/2-storey house according to the government's arrangement and then sell it, it means 5 million yuan based on the current real estate price in Yiwu."

According to local regulations, selling rural residential land is allowed among villagers. And although the sale of rural residences themselves was prohibited, some people dared to cross the line, Huang said. But even if the house could not be sold, a great sum of money could be made by renting it.

"It makes a big difference whether you are a farmer or an urban resident. The two most important things are housing and a son," he said.

This is where the hukou system affects which clauses of family planning policy apply. While urban families may have only one child, rural families are allowed to have a second child if the first is a girl. Sexual discrimination is still common, especially in rural areas, as sons carry on the family name but daughters don't.

"People look down upon you if you have no son," said a mother of a one-year-old girl, a leader of the protests who is also trying to get her rural hukou back so that she and her husband may try for a son. Rural people also enjoyed better pensions and shared profits from the village's collective income such as rent from a collectively owned building, she said.

Huang and his companions were not the first to want their rural registrations back. Last month, the Supervision Department found that about 200 public servants in Yiwu who were born in rural areas had secretly moved their hukou back to their villages. Early this year in the village of Mahu, in the Binjiang district of Hangzhou , 24 college graduates petitioned the district government to have their rural hukou reinstated.

But not all the villagers agree that the petitioners should get their rural hukou back. They see it as impinging on their own benefits because if more people share the pie, it means a smaller piece for each. "The logic is clear. They did so because there's a benefit. They're trying to take advantage of a loophole," said one opponent, a 50-something Mahu woman, who admitted she could not explain where the loophole was but felt the petitioners were unreasonable.

Yuan Chongfa, deputy director of the National Development and Reform Commission's Research Centre for Small Towns and Cities, said that according to the Land Administration Law, when a rural resident became an urban resident, he lost the right to use any farmland or housing land in his home village.

"However, according to the Constitution, land is owned by either a rural collective or the state. And just because a farmer leaves his village and moves his hukou to another place doesn't mean he's no longer a part of the collective. In this sense, he still has the right to claim ownership," Yuan said.

China, with probably the fastest urbanisation in human history, has witnessed a flourishing real estate sector and soaring property prices in recent years. "A farmer's awareness of the value of land is awakened," Yuan said. "Instead of calculating the amount of crops they can grow on a piece of land, they begin to value it with a market vision, asking: 'In which way can I make it most lucrative?'"

And Zhejiang was not alone, he said. Rich areas such as Guangdong, Beijing and fast-developing central provinces such as Henan were also seeing the same situation.

The battle of Huang and his companions has recently borne fruit. Some villages have posted notifications that they will register those whose hukou was transferred to urban areas because of admission to university.

"We're not pioneers," Huang said. "Four nearby cities - Taizhou , Xiaoshan , Dongyang and Lishui - have already allowed those who lost land because of college educations to move their hukou back to their villages." He added a note of confidence that their efforts would not be in vain.

He Yunbin , a 29-year-old technician in Haining , Zhejiang, was one of the lucky children whose parents were rich enough to change his hukou from rural to urban 18 years ago.

Two years ago, his family's house in the village of Hejia was one of 30 torn down to make room for an industrial park. They were relocated to a nearby parcel of land to build new houses, and all family members except his father were made urban residents holding urban hukou.

"The compensation for the farmland lost and the change of hukou was 30,000 yuan per head," He said, but because he was already an urban resident, he was not among the beneficiaries.

Though it was a much smaller sum compared with such places as Yiwu and Hangzhou, it was still a loss for him.

"At that time, it was beyond our imagination how the value of a rural hukou could change," He said. "Who could have foreseen that being a farmer may be a lot easier than living in the city today?"
 
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"Due to the longstanding U.S. trade embargo against Cuba, the embargo limits the amount of U.S. technology that can be used" by Cuba. To unlock her offshore oil wealth, Cuba had to wait until China's equipment-manufacturing industry was sufficiently advanced to provide the complex technology. The time has come.

Cuba to Start Offshore Oil Exploration in Early 2011 | Offshore Energy Today

"Cuba to Start Offshore Oil Exploration in Early 2011
Posted on Aug 3rd, 2010

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A Chinese-built drilling rig is expected to arrive in Cuban waters in early 2011; likely opening the way for full-scale exploration of the island’s untapped offshore fields.

Companies with contracts to search for oil and gas in Cuba’s portion of the Gulf of Mexico have already begun preparations to drill once the Scarabeo 9 rig gets on the spot. An official with Saipem, a unit of Italian oil company Eni told Reuters the massive semisubmersible rig should be completed at the Yantai Raffles shipyard in Yantai, China, by the end of this year.

The journey to Cuba will take two months, and once it arrives it will be put into operation almost immediately, said the official, who asked not to be identified. It will be used first as an exploratory well for a consortium led by Spanish oil giant Repsol YPF, which drilled the only offshore well in Cuba in 2004 and said at the time it had found hydrocarbons.

Cuba has said it may have 20 billion barrels of oil in its offshore, but the U.S. Geological Survey has estimated a more modest 4.6 billion barrels and 10 trillion cubic feet of gas. Repsol has been mostly silent on the long delay in drilling more wells, but it is widely assumed in the oil industry it was due to the longstanding U.S. trade embargo against Cuba.

The embargo limits the amount of U.S. technology that can be used, which complicates finding equipment because U.S. companies have long dominated the offshore oil business.

A number of oil service companies have solicited information about Cuban regulations, diplomats said. Cuba’s state-owned oil company Cupet has been silent about the offshore activity and rejected requests for interviews.

A government official said the requests were denied because Cupet did not want to speak during the BP oil spill in the Gulf.

The spill has never reached Cuba, but it has heightened safety concerns both in the government and among oil companies with offshore blocks, sources said.

The prospect of drilling in Cuban waters has also raised pollution fears in Florida, which is just 80 km away from the island’s maritime boundary."
 
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Repsol's offshore Brazilian fields

Repsol Sells Brazil Stake to Sinopec for $7.1 Billion - WSJ.com

"Repsol Sells Brazil Stake to Sinopec for $7.1 Billion
OCTOBER 1, 2010, 5:29 A.M. ET
By SANTIAGO PEREZ

MADRID—In one of the largest Chinese oil acquisitions to date, Spain's Repsol SA Friday announced the sale of 40% of its Brazilian assets to China Petroleum & Chemical Corp. for $7.1 billion.

The joint-venture, valued at $17.8 billion overall, guarantees Repsol key funding to explore vast and coveted offshore oil fields in South America's largest economy, Repsol said in a statement. Sinopec officials couldn't be reached Friday.

The joint Brazilian operation will become one of Latin America's largest foreign-controlled energy ventures, as it will develop some of the world's most important exploratory discoveries in recent years, Repsol said in a filing with the stock market regulator. Repsol will have controlling interest in the joint venture with a 60% share.

"With this new investment, Repsol Brasil is fully capitalized to develop all of its current projects in Brazil, including world class discoveries in the Guara and Carioca pre-salt basins," Repsol said in a press release.

The transaction is also another sign of China's growing prominence on the international energy scene, as it expands its access and ownership of raw materials needed to back the country's economic expansion. The largest oil takeover by a Chinese company to date has been Sinopec Group's $7.2 billion acquisition in 2009 of Addax Petroleum Corp., based in Switzerland, only slightly more than the venture announced Friday.

In June, the International Energy Agency said that overseas investments by China's national oil companies in 2010 look as if they will outpace by far the $18.2 billion spent in 2009, and that was before the Repsol-Sinopec announcement. From January 2009 to April 2010 alone, the three majors—China National Petroleum Corp., Sinopec and Cnooc—spent around $29 billion world-wide to acquire oil and gas assets, the IEA said.

In addition to those direct investments, CNPC and Sinopec were involved in 11 loan-for-oil deals with eight countries worth $77 billion, and the companies entered contracts committing them to invest at least $18 billion in future exploration and development, mostly in Iraq and Iran, the IEA noted.

Sinopec Chairman Su Shulin at a post-earning press conference on Aug. 23 said his company was studying more overseas acquisition possibilities and confirmed that parent company Sinopec Group, which is state-owned, was in talks with Brazil's OGX Petroleo e Gas Participacoes SA over a bid for offshore assets in Brazil. Sinopec's 2010 first-half net profit rose 6.7% to 35.46 billion Chinese yuan ($5.3 billion) from 33.25 billion yuan a year. Sinopec has oil and gas exploration and production projects in more than 20 countries.

Brazil is a key target for Chinese investment, with resources deals worth $4.3 billion agreed so far this year compared with $362 million in 2009, according to data from Dealogic

Brazilian state oil company Petroleo Brasileiro SA, or Petrobras, also agreed to a $10 billion loan from China Development Bank last May in exchange for crude-oil supply to Sinopec's parent, China Petrochemical Corp., over 10 years. Petrobras also gave Sinopec rights to explore two deep-water blocks in Brazil for oil and natural gas.

Under the deal announced Friday, Repsol will retain 60% of the Brazilian venture, which is valued at $17.8 billion following the stake sale agreement. Repsol and Sinopec will continue their respective expansion plans in Brazil and will participate, jointly or individually, in future bidding rounds in the area, Repsol added.

Recently, Repsol shares were among top gainers and most actively traded in Spain, rising 5.1% to €18.9 ($25.8), lifting Madrid's key IBEX-35, which was 0.3% higher after opening little-changed on Friday. Shares in construction company Sacyr Vallehermoso SA, which owns 20% of Repsol, were jumped 10.7% to €4.85.

Write to Santiago Perez at santiago.perez@dowjones.com"

Sinopec invests $7bn in Brazil oil alliance with Repsol | beyondbrics | FT.com

"Sinopec invests $7bn in Brazil oil alliance with Repsol
October 1, 2010 10:03am
by Barney Jopson
...
China considers access to oil and gas supplies a matter of national security as it is the world’s second-largest oil consumer, after the US, and produces less than half it needs domestically.

Repsol had been preparing its Brazilian operations for an IPO, but that plan will now be abandoned in favour of the Sinopec partnership. A Repsol spokesman told beyondbrics:

"We’re very pleased with this deal because it’s not only giving us funds for development, but will give us the possibility of having a stable and committed partner when we develop further projects."

For China’s oil majors, a presence in Brazil’s offshore “pre-salt” fields - so called because the oil is trapped under several kilometres of seawater, rock and a layer of salt - could help them gain operating experience in technically challenging situations."
 
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China and Ghana sign US$15 billion worth of contracts

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Chinese President Hu Jintao (R) shakes hands with his Ghanaian counterpart John Evans Atta Mills during a welcoming ceremony for President Mills at the Great Hall of the People in Beijing, capital of China, on Sept. 20, 2010. (Xinhua/Ding Lin)

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Ghana is an enormous West African country. It is seven times larger than Taiwan or 80 percent the size of Italy. Africa (e.g. 30,221,532 km2) is an enormous continent that is three times larger than China (e.g. 1/15th of Earth's land-mass or 9,671,018 km2).

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Ghana's offshore oil blocks are mostly unexplored. China can provide the technology and financing to enable Ghana to extract its offshore wealth.

China Business News: China, Ghana sign US$1.5 bln for infrastructure, oil and gas

"China, Ghana sign US$15 bln for infrastructure, oil and gas

Sep. 28, 2010 (China Knowledge) - China and Ghana, a West African country, last week signed a total of US$15 billion worth of contracts, including US$10.4 billion of bank lending for infrastructure project and US$3 billion of bank loan for oil and gas development, during a six-day Beijing visit by Ghanaian President John Atta Mills, sources reported.

The move is the latest in a string of Chinese investments on the resource-rich continent.

China Export Import Bank and the government of Ghana signed a US$10.4 billion concessionary-loan agreement for various infrastructure projects. The 20-year loan is subject to approval from the Ghanaian parliament and cabinet.

Ghana also signed a US$3-billion loan agreement with the China Development Bank to help develop Ghana's oil-and-gas sector. In addition, CDB guaranteed more than US$400 million for water and e-governance projects in Ghana.

Moreover, Ghana inked an agreement worth US$1.2 billion with Chinese company Bosai Minerals Group to build a bauxite and aluminum refinery in Ghana over four years. Bosai Minerals would purchase an 80% stake in Ghana Bauxite Co."


China To Build Two Regional Hospitals In Ghana | Social | Peacefmonline.com

"China To Build Two Regional Hospitals In Ghana
Date: 24-Sep-2010

Shangai Construction Company in China has agreed to build two regional hospitals in Wa and Kumasi to enhance healthcare delivery. The gesture by the Chinese company is in support of the government’s ‘Better Ghana’ agenda in the health sector.

This was the outcome of President John Evans Atta Mills tour of the offices of the Shangai Construction Company on Thursday, September 23 as part of his official visit to China. Speaking to the Daily Graphic via telephone from China, the Communications Director at the Presidency, Mr. Koku Anyidoho, said the company had given the indication to support Ghana’s development efforts, particularly in the fields of infrastructural development and health delivery, which were of prime importance to President Mills.

President Mills enjoys special friendship with his Chinese counterpart, both of whom were Vice-President in the history of their respective countries. Mr. Anyidoho quoted President Hu as saying that his commitment to support the Mills administration was born of his conviction that “Whatever we do for Ghana will not be abused and misused”.

President Mills thanked the company for the support, believing that the good health of the people would lead to a healthy nation. He gave the assurance that whatever had been received would be used for their intended purpose.

In a related development, Mr. Anyidoho said a telecommunication company, Huawei, had pledged $6 million towards Ghana’s e-Governance project. Additionally, the company has agreed to offer scholarships to 30 Ghanaians to receive training in telecommunications in China.

Source: Daily Graphic"

GBC News, Top Story, Ghana, China to sign $270m Agreement for Kpong Water Project

"Ghana, China to sign $270m Agreement for Kpong Water Project

A $270 million loan facility to carry out expansion works at the Kpong Water Project is expected to be signed between the governments of Ghana and China when President John Evans Atta Mills begins his state visit to that country on September, 19.

The deal will ensure an additional supply of 40 million gallons of water daily to Accra and its environs to reduce the perennial water shortages in some parts of the national capital.

This was a key outcome of bilateral discussions between Vice-President John Mahama and the Minister of Commerce of China, Chen Deming, held on the sidelines of the World Investment Forum taking place at the port city of Xiamen , China .

In his remarks prior to a closed door meeting with Mr. Chen, Vice-President Mahama said the government was looking forward to signing the agreement as it would be a landmark of Ghana-China relations, especially on the eve of the 50th anniversary celebration of diplomatic relations between the two countries.

He told the Chinese minister that the Kpong water expansion project would contribute in no small way to helping Ghana to achieve the Millennium Development Goal on water. He said though the country was on track to attaining the MDG goal on water, the same could not be said for sanitation.

Government, he said was leaving no stone unturned in ensuring that progress was made in the sanitation sub-sector and the area of maternal and infant mortality. He stated also that Ghana was on course to halve poverty by 50% by 2015.

Vice-President Mahama expressed the hope that with the assistance and support of countries such as China , Ghana would be able to marshal the requisite investments and development assistance to enable it to achieve the MDG targets."
 
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SCMP/Reuters
Germany to help China gain market status from EU
Reuters in Berlin
2:04pm, Oct 06, 2010

Germany will work to get the European Union to recognise China as a market economy by 2016, giving it benefits under international trade rules, according to a joint communique issued after leaders of the countries met on Tuesday.
China has urged the EU to recognise it as a market economy, a status that would make it less vulnerable to anti-dumping charges under rules of the World Trade Organisation.

Chancellor Angela Merkel met Premier Wen Jiabao at the Meseberg Palace north of Berlin after an EU-Asia summit in Brussels.

The statement issued in Berlin added that China had agreed to hold talks with the EU on the issue. It also said China would still have to fulfil certain EU conditions.

Both governments also said they want the UN climate talks in Cancun, Mexico later this year to agree steps to fight climate change.
 
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Molecular biology:Eliminate to survive : Article : Nature China

"Molecular biology: Eliminate to survive
Published online: 4 August 2010 | doi:10.1038/nchina.2010.87
Felix Cheung

A protein that induces autophagy may help to suppress tumour growth

Original article citation
Zhao, Y. et al. Cytosolic FoxO1 is essential for the induction of autophagy and tumour suppressor activity. Nature Cell Biol. doi:10.1038/ncb2069 (2010).

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© (2010) Nature Cell Biology

Although previous studies have highlighted the possible link between autophagy — the cellular process for eliminating damaged proteins and organelles in the cytosol — and tumour suppression, the exact mechanism that connects them is still unknown. Weiguo Zhu and co-workers at Peking University in Beijing[1] have now identified a protein that induces both autophagy and tumour suppressor activity.

Recent reports have suggested that FoxO proteins are involved in the induction of autophagy. The researchers found that in response to stress, human cancer cell lines increased their cytosolic FoxO1 expression, p62 degradation and LC3-II accumulation (the latter two being the markers of autophagy). Importantly, they found that FoxO1 underwent acetylation to trigger autophagy.

Further investigation revealed that during the process of acetylation, FoxO1 detaches from SIRT2, a histone deacetylase, and binds to Atg7, an E1-like protein involved in autophagosome formation.

Human cancer cells expressing FoxO1 stopped growing in mice (pictured right), but those expressing an empty vector continued to grow (pictured left). The researchers also compared tissue samples from normal patients and patients with colon cancer. They found that the FoxO1 expression and p62 degradation levels were much lower in cancerous tissues.

The results clearly demonstrate a connection between autophagy and tumour suppressor activity. The researchers believe that autophagy could offer a method of suppressing tumour growth, but more work is required to understand how autophagy achieves this.

The authors of this work are from:
Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Department of Biochemistry and Molecular Biology, Peking University, Peking University, Beijing, China; Department of Surgery, Secondary Affiliated Hospital, Peking University Health Science Center, Peking University, Beijing, China; Department of Biological Science and Biotechnology, Tsinghua University, Beijing, China; School of Oncology, Peking University Health Science Center, Peking University, Beijing, China.

Reference

1. Zhao, Y. et al. Cytosolic FoxO1 is essential for the induction of autophagy and tumour suppressor activity. Nature Cell Biol. doi:10.1038/ncb2069 (2010). | Article"
 
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Condensed matter physics:Mind the gap : Article : Nature China

"Condensed matter physics: Mind the gap
Published online: 4 August 2010 | doi:10.1038/nchina.2010.94
Felix Cheung

The energy gap of a topological insulator widens in films below a certain thickness

Original article citation
He, K., Xue, Q. K. et al. Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit. Nature Phys. doi:10.1038/nphys1689 (2010).

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© Nature Physics

Topological insulators are special insulators with conductive surfaces. Their electronic band structure exhibits an energy gap — the optical signature of insulators — only in the bulk region, and not on the conductive surfaces. A team of researchers led by Ke He at the Chinese Academy of Sciences and Qikun Xue at Tsinghua University, both in Beijing[1], have discovered that the surfaces develop an energy gap when the thickness of the topological insulator is reduced below a certain level.

The researchers used a highly precise technique called molecular beam epitaxy to grow the topological insulator — a bismuth selenide thin film — layer by layer, and then used angle-resolved photoemission spectroscopy to study the electronic band structure of the topological insulator surfaces. They observed an energy gap (see images) for a thickness below six quintuple layers (a quintuple layer being the smallest thickness achievable through molecular beam epitaxy). The energy gap became smaller as the film thickness was increased.

The results suggest that gapless states exist on both the upper and lower surfaces of thick topological insulator films. These gapless states could be useful for low-power electronics and quantum computing.

The authors of this work are from:
Institute of Physics, Chinese Academy of Sciences, Beijing, China; Department of Physics, Tsinghua University, Beijing, China; Department of Physics and Center for Theoretical and Computational Physics, University of Hong Kong, Hong Kong, China; Department of Physics, University of Texas, Austin, Texas, USA; Department of Physics, Stanford University, Stanford, California, USA.

Reference

1. He, K., Xue, Q. K. et al. Crossover of the three-dimensional topological insulator Bi2Se3 to the two-dimensional limit. Nature Phys. doi:10.1038/nphys1689 (2010). | Article"
 
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Virology:Influenza virus has a new weak spot : Article : Nature China

"Virology: Influenza virus has a new weak spot
Published online: 7 July 2010 | doi:10.1038/nchina.2010.76
Felix Cheung

Nucleozin treats influenza by inhibiting nuclear protein accumulation in viruses

Original article citation
Kao, R. Y. et al. Identification of influenza A nucleoprotein as an antiviral target. Nature Biotechnol. doi:10.1038/nbt.1638 (2010).

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© (2010) istockphoto.com/Ping Han

Experts are concerned about the potential emergence of a 'super flu' that no drug can treat, owing to the ability of influenza viruses to constantly evolve and become resistant to particular drugs. For this reason, scientists have been looking for drugs that can attack targets on the influenza virus. Using forward chemical genetics, Kwok Yung Yuen and Richard Yi Tsun Kao at the University of Hong Kong and co-workers[1] have established influenza virus nucleoprotein as a viable target and nucleozin as a drug that treats influenza by inhibiting nucleoprotein accumulation.

The influenza virus nucleoprotein is the most abundantly expressed protein during the course of infection. It accumulates in the nucleus in the early phases of infection and spreads in the cytoplasm during viral assembly and maturation.

The researchers screened a chemical library of 50,240 compounds with diverse structures on cell-based influenza virus assays and selected 950 compounds that showed protective effects. They then tested the selected compounds using a cytopathic effect assay and identified 39 compounds that were particularly potent.

When the researchers used fluorescence microscopy to examine the effects of these 39 compounds on nucleoprotein trafficking, they found five compounds that blocked the accumulation of nucleoprotein in the nucleus. Nucleozin, in particular, was deadly against influenza viruses at submicromolar levels and protected mice subjected to lethal doses of the avian influenza virus H5N1.

The study will further the development of small-molecule therapies in treating influenza.

The authors of this work are from:
Department of Microbiology, University of Hong Kong, Hong Kong, China; Research Center of Infection and Immunology, University of Hong Kong, Hong Kong, China; State Key Laboratory of Emerging Infectious Diseases, University of Hong Kong, Hong Kong, China; Department of Chemistry, University of Hong Kong, Hong Kong, China; Department of Biochemistry, University of Hong Kong, Hong Kong, China; Department of Computing Sciences, Capilano University, British Columbia, Canada.

Reference

1. Kao, R. Y. et al. Identification of influenza A nucleoprotein as an antiviral target. Nature Biotechnol. doi:10.1038/nbt.1638 (2010). | Article"
 
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Quantum physics:Entanglement for sure : Article : Nature China

"Quantum physics: Entanglement for sure
Published online: 7 July 2010 | doi:10.1038/nchina.2010.85
Felix Cheung

Researchers in Hefei have designed a linear optical circuit for deterministically producing entangled photon pairs

Original article citation
Wagenknecht, C. et al. Experimental demonstration of a heralded entanglement source. Nature Photon. doi:10.1038/nphoton.2010.123 (2010).

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© (2010) Nature Photonics

Entangled photon pairs are great information carriers for quantum communication and quantum computation. Unfortunately, spontaneous parametric down-conversion (SPDC) — the predominant mechanism for generating entangled photon pairs — is a random process and therefore has difficulty in supporting practical applications. Jianwei Pan and Kai Chen at the University of Science and Technology of China in Hefei and co-workers[1] have now overcome this limitation by designing a set-up for deterministically producing entangled photon pairs (that is, with a probability of 100%).

The set-up (see image) comprises an SPDC source for producing entangled photon pairs, an optical circuit of beamsplitters for splitting the photons, and six outputs. Single-photon detectors monitor four of the outputs and function as triggers — the detection of four photon states signals the creation of one entangled photon pair through the other two outputs.

The use of an SPDC source makes the entangled photon pairs stable and robust. The researchers say that they could also improve the performance of their set-up by using beamsplitters with different transmission ratios. So far, they have achieved a fidelity of 87% and a state-preparation efficiency of 45%. The next step in their study is to miniaturize the SPDC source and optical circuit using waveguides instead of bulk optics for on-chip integration.

The authors of this work are from:
Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany; Department of Physics and National Center for Theoretical Sciences, National Cheng Kung University, Tainan, Taiwan; Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, China.

Reference

1. Wagenknecht, C. et al. Experimental demonstration of a heralded entanglement source. Nature Photon. doi:10.1038/nphoton.2010.123 (2010). | Article"
 
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China launches "Shijian VI-04" group satellites

"China launches "Shijian VI-04" group satellites
English.news.cn 2010-10-06 14:56:53

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Long March 4B rocket, carrying two satellites of the "Shijian VI-04" group, lifts off from the launch pad in Taiyuan, capital of north China's Shanxi Province, on Oct. 6, 2010. The satellites, which have entered space orbit, will carry out probes on the space environment, radiation levels, and conduct space science experiments; according to the Taiyuan Satellite Launch Center. (Xinhua/Shang Chunya)
 
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SCMP
Beijing ups the stakes on climate change
Rich nations under fire at Tianjin summit
Shi Jiangtao in Tianjin
Oct 07, 2010

Beijing upped the ante in the last major negotiations ahead of the United Nations climate summit in Mexico, increasing pressure on Washington and drumming up support from developing-nation allies.
China's top climate official lashed out yesterday at the lack of political will among rich nations to break the impasse in climate talks, and dismissed US demands on emission caps and transparency as absurd.

Mainland and overseas NGOs echoed Beijing's offensive in Tianjin , turning up the heat on the US and calling it the stumbling block to the progress desperately needed to revive the foundering talks.

Analysts said China's unusual confidence in reaching out to the media and the strong support it had received from environmentalists indicated Beijing had gained the upper hand in the long-stalled negotiations.

"China's domestic effort on emission reduction has given the country a lot more bargaining chips in international negotiations and that helps explain why China has become increasingly confident," Greenpeace climate campaigner Yang Ailun said.

Xie Zhenhua , deputy director of the National Development and Reform Commission, said China had demonstrated its sincerity to move the deadlocked talks forward with its domestic emission-reduction effort, and it was time for rich nations to take action to restore trust.

"China has made its effort to cut energy waste and pollution and is prepared to do more, but we have to be fair and reasonable [when putting further demands on China]," he said.

Negotiators from more than 170 nations are meeting in Tianjin to make final preparations for a climate summit to start in Cancun, Mexico, on November 29, amid widespread pessimism over the chances of reaching a binding deal on tackling global warming this year.

In an apparent reference to the US, Xie said some countries had urged developing countries to increase transparency in their domestic effort to cut emissions of greenhouse gases yet had failed to make much progress at home or in helping poor nations with financing and technology.

"Is that justifiable?" he said.

Xie said rich nations lacked ambition for a binding deal on tackling global warming after the failure at last year's Copenhagen summit.

"How can we rebuild mutual trust between rich and poor nations if industrial countries do not honour their commitment on fast-start climate funds, which is the first priority at the moment?" he said.

He also fired a new salvo at the US and other developed nations over their assertion that China's refusal to accept carbon caps had impeded the climate talks and put poor nations vulnerable to global warming at a disadvantage in terms of the distribution of limited space for future emissions.

"It is apparently aimed at setting China and other poorer developing nations at loggerheads," Xie said.

He said there were rich countries with per capita gross domestic products of US$40,000 or higher "but their total emissions of greenhouse gases are still growing".

"You still haven't reached a peak, so what gives you the right to ask me when I'll peak?" he added.

Although China's greenhouse gas emissions continue to rise quickly, Xie pledged his government would step up efforts to keep the growth in check.

But Xie insisted China was neither seeking the leadership role in climate talks nor trying to dominate the negotiations by hosting the Tianjin meeting in the wake of Washington's setbacks on climate legislation.

Green groups also expressed anger at "continued inaction" of the US by challenging Washington to match Beijing's efforts on emission cuts and energy efficiency.

"It is time for the United States to stop using China as a scapegoat, and to move forward with whatever honest efforts it can come up with," a group of mainland academics and NGOs said in an open letter to US climate envoy Todd Stern. On average, people in the United States continue to pollute about four times as much as those in China - at 19.2 versus 4.9 tonnes per capita in 2008, the letter said. The US "as the world's richest country and its greatest historical polluter", must fulfil its global climate obligations.

"We acknowledge that China is not perfect, and will probably never be so ... But here we want to emphasise that China is not and must not continue to serve as an excuse for continued inaction by the United States, especially as China is moving forward with serious efforts," the letter said.

The US said UN climate talks were making less progress than hoped for because of a rift over emission-reduction targets for developing economies.

"There is less agreement than one might have hoped to find at this stage," said Jonathan Pershing, the US deputy special envoy for climate change and lead US negotiator in Tianjin. "It's going to require a lot of work to get to some significant outcome by the end of this week, which then leads us into a significant outcome in Cancun."

Additional reporting by Reuters
 
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China's growth projected to be 10.5% in 2010, 9.6% in 2011: IMF - People's Daily Online October 07, 2010

China's growth is projected to average 10.5 percent in 2010 and 9.6 percent in 2011, mainly driven by domestic demand, according to a report released by the International Monetary Fund (IMF) on Wednesday.

The Washington-based international institution made the projection in its biannual World Economic Outlook (WEO) before the IMF and its sibling institution World Bank annual meeting to be held this weekend.

"The slight moderation in recent activity is expected to continue through 2011 in light of tighter quantitative limits on credit growth, measures to cool off the property market and limit bank exposure to this, and the planned unwinding of fiscal stimulus in 2011," IMF said in the report.

The report said this year's sustained growth in retail sales and industrial production confirms that private sector activity has advanced beyond the lift from government stimulus.

"On average over 2010-11, private domestic demand is poised to contribute two-thirds of near term growth, and government activity about one third, whereas the contribution from net exports will be close to zero," said the report.

Despite the robustness in domestic demand, the pickup in inflation in 2010 reflected mainly higher food prices rather than core inflation, the report said.

Source:Xinhua
 
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