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BEIJING Giacomo Bonaventura AC Milan Jersey , Oct. 15 (Xinhua) -- Chinese authorities on Thursday announced a one-year ban on imports of African ivory acquired as hunting trophies in the country's latest effort to fight wildlife poaching and trafficking.


In a statement on its website, the State Forestry Administration (SFA) said it would stop approving imports until Oct. 15, 2016.


An unnamed official with the agency said the move underscored the stance of the Chinese government in wildlife protection and a concrete step forward in its efforts.


The policy follows a one-year ban in February on imports of African ivory carvings acquired after the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), which took effect in 1975.


The SFA said a review, which would decide whether the measure should be extended Gabriel Paletta AC Milan Jersey , on the February ban was underway.


The trade and sale of ivory carvings is legal in China if the activities conform with certain regulations. Ivory may only come from two sources -- items imported before the country joined CITES in 1981, and 62 tonnes of raw-ivory stock bought from four African countries in 2008, as permitted by the CITES.


Raw elephant ivory and its products should only be processed at designated places, sold by certain outlets and be individually tracked. Each legal product has been cataloged and is traceable by its own unique photo ID.


During President Xi Jinping's visit to the United States last month, the two countries committed to nearly-complete bans on ivory import and export Gabriel AC Milan Jersey , including significant restrictions on ivory hunting trophies, and regulation to halt the domestic commercial trade of ivory.


CERAMICS is easy to break and aluminum is easy to bend — or so many people believe.


But a team at Shanghai Jiao Tong University announced yesterday that after nearly 30 years of research they had blended the two materials together to create a new substance with a strength and rigidity that is even stronger than titanium alloy.


The composite called “alumics?” is now being tested in C919 jets and Geely automobiles, and is expected to help industries like aviation, automobile and high-speed rail develop into a new era of lighter and more energy-saving products.


Aluminum is one of the most commonly used light metals because of its tenacity and aluminum alloy has been incorporated into handsets and computers to make them light and portable.


But aluminum is easily bent. To make it stiffer, researchers have tried adding ceramics.


“Ceramics is fragile in many people’s mind Franck Kessie AC Milan Jersey , but its rigidity is actually even better than steel,” said Wang Haowei, a professor at Jiao Tong’s School of Material Science and Engineering who leads the alumics team.


A method commonly across the world is to make particles or fibers out of ceramics and then add them into the aluminum alloy.


This does add strength and rigidity to the materials, but the particles are large and the blended materials show difficulty in molding, low strength Fabio Borini AC Milan Jersey , poor plasticity and unstable quality, which keep them away from industrial application, according to Wang.


“Since it’s not a feasible way, we thought up a new method — growing ceramics in aluminum to create a nanometer material,” he said.


Their work follows a method initiated 25 years ago by Wu Renjie Davide Calabria AC Milan Jersey , founder of the university’s State Key Laboratory of Metal Matrix Composites.


“In metal metallurgy, nonmetal things are usually treated as impurities and should be get rid of,” said Wang. “But we found in our researches that they can also play favorable roles if we control the sizes, shapes and distribution of these particles by controlling chemical reaction process.”


Synthesized by a melt reaction composition, the aluminum-ceramics composites causes the ceramics particles to be reduced to a nanometer level to break through the bottlenecks of poor plasticity and processing difficulty.


The new composites are light Cristian Zapata AC Milan Jersey , strong, rigid, heat-resistant and anti-corrosive. Their strength and rigidness has proved to be better than titanium alloy.


The new material has been used in military and aerospace industries in recent years.


Wang said the material can help, for example, to reduce the weight of planes Blank AC Milan Jersey , cars, trains and bikes.


The team is cooperating with the Commercial Aircraft Corporation of China and AECC Commercial Aircraft Engine Co to apply alumics on China’s domestically made planes, according to Wang.


Wu Guanghui, chief designer of China’s self-developed jet C919 and deputy general manager of COMAC, said his company had found effective results in tests of sections made from alumics.


Wu Antonio Donnarumma AC Milan Jersey , who helped name the new material, said aviation technology has developed as material development improved.


“Alumics is very suitable in making narrow-body jets like C919, while carbon fiber composites are more suitable for wide-body planes,” said Wu.


On Friday, Jiao Tong signed a contract with the government of Huaibei City of Anhui Province Andrea Conti AC Milan Jersey , Shanghai Junyao (Group) Co and the Anhui Xiangbang Composite Co to establish an alumics innovation center to promote civil use of the material.


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