Wuhan University is located in Wuhan, Hubei, China, and is administered by the Ministry of Education of the People's Republic of China. It was selected by both Project 985 and Project 211 as a major receiver of state funding. The university is situated at Luojia Hill, with palatial buildings blending the Chinese and Western style. It was commonly regarded as one of the most beautiful campuses in China. Wikipedia.
News Article | May 5, 2017
Supplements containing arsenic have been banned in the European Union since 1999 and in North America since 2013. In many countries they are still added to poultry feed to prevent parasitic infection and promote weight gain. In the journal Angewandte Chemie, scientists have now demonstrated that the danger to human health may be greater than previously thought because the metabolic breakdown of these compounds in chickens occurs via intermediates that are significantly more toxic than the initial additives. Roxarsone (3-nitro-4-hydroxyphenylarsonic acid, "Rox") is a common feed supplement that is only slightly toxic to those animals that have been tested. However, we do not yet have enough knowledge about which arsenic-containing metabolites are found in treated chickens and what risks these pose to human health. The toxicity of arsenic-containing species depends strongly on the type of compound and can vary by orders of magnitude. In a study of 1600 chickens under controlled feeding, a team headed by Bin Hu at Wuhan University in China and X. Chris Le at the University of Alberta in Canada analyzed liver samples from birds treated with Rox. Previously, these researchers found a number of different arsenic-containing species in chicken livers, breast meat, and waste. By using various mass spectrometric and chromatographic methods, they have now been able to identify three additional compounds. These compounds are Rox derivatives that have an additional methyl group (-CH3) on their arsenic atom. The three methylated compounds make up about 42 % of the total arsenic compounds found in the chicken livers. What causes this methylation? The researchers are pointing to the enzyme arsenic methyltransferase (As3MT), which is also involved in the human metabolism of arsenic. However, this enzyme only methylates trivalent arsenic, whereas Rox and its derivatives contain arsenic in its pentavalent form. Tests with reduced versions of Rox have shown that the process of breaking down Rox occurs via trivalent intermediates. Tests with cell cultures have shown that these species are 300 to 30,000 times as toxic as Rox derivatives with pentavalent arsenic. It remains to be determined whether and at what concentrations these highly toxic intermediates occur in treated chickens. In the poultry industry, Rox supplementation is usually halted five days before slaughter. Liver samples taken after this interval still contained residues of arsenic compounds at a concentration that--at least if the chicken liver is consumed--could be alarming. The researchers recommend an assessment of the extent of human exposure to various arsenic compounds to determine whether feed containing arsenic is not more problematic for human health than previously thought. Dr. Chris Le is Distinguished University Professor and Director of the Analytical and Environmental Toxicology Division at the University of Alberta. He is Fellow of the Royal Society of Canada (Academy of Science) and Canada Research Chair in Bio-analytical Technology and Environmental Health.
Wuhan University | Date: 2016-11-16
A method for recycling rare earth from a wastewater from rare earth mining or from rare earth smelting, includes the steps of: removing oil from the wastewater to obtain a degreased wastewater; purifying the degreased wastewater to obtain a purified wastewater using a pretreatment system; recycling rare earth from the purified wastewater to obtain a rare earth slurry and a low rare earth wastewater using a rare earth recycling tank; treating the low rare earth wastewater to obtain ammonia gas using an ammonium degassing device; and converting the ammonia gas to obtain aqueous ammonia using an aqueous ammonium preparing system.
News Article | May 5, 2017
Supplements containing arsenic have been banned in the European Union since 1999 and in North America since 2013. In many countries they are still added to poultry feed to prevent parasitic infection and promote weight gain. In the journal Angewandte Chemie, scientists have now demonstrated that the danger to human health may be greater than previously thought because the metabolic breakdown of these compounds in chickens occurs via intermediates that are significantly more toxic than the initial additives. Roxarsone (3-nitro-4-hydroxyphenylarsonic acid, "Rox") is a common feed supplement that is only slightly toxic to those animals that have been tested. However, we do not yet have enough knowledge about which arsenic-containing metabolites are found in treated chickens and what risks these pose to human health. The toxicity of arsenic-containing species depends strongly on the type of compound and can vary by orders of magnitude. In a study of 1600 chickens under controlled feeding, a team headed by Bin Hu at Wuhan University in China and X. Chris Le at the University of Alberta in Canada analyzed liver samples from birds treated with Rox. Previously, these researchers found a number of different arsenic-containing species in chicken livers, breast meat, and waste. By using various mass spectrometric and chromatographic methods, they have now been able to identify three additional compounds. These compounds are Rox derivatives that have an additional methyl group (–CH3) on their arsenic atom. The three methylated compounds make up about 42 % of the total arsenic compounds found in the chicken livers. What causes this methylation? The researchers are pointing to the enzyme arsenic methyltransferase (As3MT), which is also involved in the human metabolism of arsenic. However, this enzyme only methylates trivalent arsenic, whereas Rox and its derivatives contain arsenic in its pentavalent form. Tests with reduced versions of Rox have shown that the process of breaking down Rox occurs via trivalent intermediates. Tests with cell cultures have shown that these species are 300 to 30,000 times as toxic as Rox derivatives with pentavalent arsenic. It remains to be determined whether and at what concentrations these highly toxic intermediates occur in treated chickens. In the poultry industry, Rox supplementation is usually halted five days before slaughter. Liver samples taken after this interval still contained residues of arsenic compounds at a concentration that—at least if the chicken liver is consumed—could be alarming. The researchers recommend an assessment of the extent of human exposure to various arsenic compounds to determine whether feed containing arsenic is not more problematic for human health than previously thought. Explore further: Arsenic in chicken feed may pose health risks to humans More information: Hanyong Peng et al. Methylated Phenylarsenical Metabolites Discovered in Chicken Liver, Angewandte Chemie International Edition (2017). DOI: 10.1002/anie.201700736
News Article | April 20, 2017
Audiences stand in long lines to read aloud a passage from their favorite book or poem and compete for a spot on the highly popular TV program BEIJING, April 20, 2017 /PRNewswire/ -- On April 14th, more than a hundred university students stood in a long line in front of the Reading Pavilion at Wuhan University for an opportunity to make a three-minute-long audio recording of themselves reading their favorite passage from a book or piece of poetry. Similar scenes have been taking place in China's first-tier cities of Beijing, Shanghai, Guangzhou and Shenzhen, as well as in several second-tier cities, among them, Hangzhou, Kunming and Xi'an. Recently, public reading events has become a craze across China. The unprecedented upsurge in an interest in reading has been driven, more than anything, by The Reader, a television variety show launched two months earlier. In every episode, five to seven groups of readers from different areas selected are invited onto the show where they will share their personal stories and read a passage from a literary classic that holds special meaning for them. As producer and host of the program, popular Chinese anchor Dong Qing has brought her years of experience in broadcast television to the show. Backed by the inspiring stage design created by Ms. Dong and her sophisticated production team, the culturally-relevant content of the program resonates deeply with the show's Chinese audiences. Soon after the first episode was broadcast, similar reading events started popping up all over the country, especially in military barracks and on school and college campuses. As an important setting of the program, the Reading Pavilions are specialized mobile recording studios outfitted with simple recording and sound insulation equipment and are open to anyone with a favorite literary passage and the desire to give a voice to the words in the passage. Reading Pavilions are making their way through many of China's first- and second-tier cities. Wherever a Reading Pavilion has made a stop, it has immediately drawn the attention of the local citizenry and become a focus of the local media. Aspiring readers, a relatively even mix of men and women spanning all age groups and walks of life, have gathered in long lines outside the mobile recording studios for their chance to read a meaningful, favorite passage. The Reading Pavilions have not only stimulated a renewed interest among the public in reading, but also provides them with a platform for expressing something important that they have gained from a reconnection with this simple and time-honored pastime. To view the original version on PR Newswire, visit:http://www.prnewswire.com/news-releases/cctv-program-the-reader-drives-public-reading-craze-in-china-300442549.html
Wuhan University | Date: 2016-04-13
A mechanical chameleon through dynamic real-time plasmonic tuning, the external surface of which is covered by plasmonic cells is provided. Plasmonic cells, based on the combination of bimetallic nanodot arrays and electrochemical bias, use the electrochemical method elctrodepositing and stripping Ag shells on plasmonic Au nanodomes and then we achieve the reversible full colour plasmonic cells/display. Plasmonic cells, under the control of circuits and sensors, make mechanical chameleon automatically change the color of its own when its walking to the corresponding background color and always keeping the same color with the color background. This mechanical chameleon through dynamic real-time plasmonic tuning can capture and simulate the entire colour-patterns of the environment and then drive the colour-changing process in individual cells, fully merging the mechanical chameleon into the surroundings, which makes this technology is readily approachable.
News Article | May 19, 2017
DURHAM, N.C. and KUNSHAN, China, May 19, 2017 /PRNewswire/ -- Duke Kunshan University in Kunshan, China, will welcome the first batch of students in its undergraduate degree program in August 2018. The four-year bachelor's degree program is based in the liberal arts and sciences tradition, allowing students to explore a variety of subjects and build a broad base of knowledge before selecting a major. Designed by faculty at Duke University, a leading world university, and with input from Chinese higher education experts, Duke Kunshan's curriculum develops deep subject matter expertise while integrating coursework from multiple disciplines, ensuring that graduates are well prepared for employment or advanced study in their chosen field. Courses will be taught in English and will be primarily conducted in small-sized, discussion-based classes. Overall, Duke Kunshan will have a student-faculty ratio of 10:1. Undergraduate students will participate in a university community that fosters learning inside and outside of the classroom. Opened in 2014, the Duke Kunshan campus features classrooms, lab spaces, housing and dining facilities for students and faculty members, as well as arts and recreation areas with current educational technology. Duke Kunshan students and faculty will come from all over the world, creating an international environment on campus. In addition, students will have the opportunity to study abroad at Duke University in the United States. Graduates of the program will receive a bachelor's degree from Duke University, an institution consistently ranked among the top universities in the world, as well as a degree from Duke Kunshan University approved by China's Ministry of Education. They will join Duke's global network of more than 170,000 alumni, many of whom are widely recognized for their leadership in business, government, technology, athletic and philanthropic activities. Charlie Soong, the father of the well-known Soong sisters in China, was the first international student at Duke. Duke Kunshan University was jointly founded by Duke University, China's Wuhan University and the City of Kunshan in 2013 and has offered master's degree programs in business, global health and medical physics, and a Global Learning Semester program for undergraduates, since 2014. A new master's program in environmental policy will begin later this year. "The undergraduate degree program at Duke Kunshan University will open in 2018 with an innovative curriculum specially designed to educate and challenge students in this unique global setting," said Duke University President Richard Brodhead. "I look forward to joining my faculty colleagues in the fall of 2018 to take part in teaching the incoming class at Duke Kunshan," added Brodhead, who will step down from the Duke presidency this June. Brodhead is also a member of the American Academy of Arts and Sciences and an expert in the 19th-century American literature. Duke Kunshan will initially offer eight undergraduate majors designed to equip students for either further study or immediate employment in settings where they will be expected to draw on knowledge from multiple fields in order to succeed. The initial eight majors are: Additional majors are under development, including humanities majors that integrate history, philosophy, literature, and the arts, as well as social science majors integrating economics, sociology, anthropology, and psychology. "After the successful launch and operation of our master's programs since 2014, we are now fully prepared to offer the undergraduate degree program," said Liu Jingnan, chancellor of Duke Kunshan and academician of the Chinese Academy of Engineering. "We are confident in helping students become citizens of rooted globalism who put knowledge and discoveries to use for the sake of the society." Denis Simon, executive vice chancellor of Duke Kunshan and an expert on U.S.-China science and technology relations, added, "As China grows on the international stage, we are delighted to offer a unique international learning experience for students from across the world. Our program is designed not only to help students gain better access to international opportunities, but also define and create new jobs for the 21st century." Dou Xiankang, president of Wuhan University, said, "Wuhan University will work closely with partners to help cultivate students who think globally and act firmly, and help build Duke Kunshan University into a world-class university with a top-notch undergraduate program." Duke Kunshan University will offer merit-based and need-based scholarships for qualified Chinese and international students, reflecting the university's commitment to recruiting a cohort of highly talented students from a diverse set of backgrounds and experiences. Applications for admission will be accepted beginning in August 2017 through the university and Common Application websites. Students with PRC citizenship are required to take the Gaokao as a replacement for standardized tests such as the SAT and ACT. Further information about the undergraduate degree program is available at undergrad.dukekunshan.edu.cn. Duke Kunshan is a partnership between Duke University, Wuhan University, and the City of Kunshan to create a world-class university offering a range of academic programs for students from China and around the world. A non-profit, joint-venture institution, Duke Kunshan was granted accreditation approval by China's Ministry of Education in September 2013 and welcomed its inaugural class of students in August 2014. Duke Kunshan currently offers four master programs in medical physics, global health, environmental policy and management studies, which grant Duke degrees to its graduates. An undergraduate Global Learning Semester program offers a semester-long learning experience to undergraduate students currently enrolled at other Chinese and international universities. The Duke Kunshan University campus is located in Kunshan, Jiangsu province, China. Located in close proximity to both Shanghai and Suzhou and connected to both by high-speed rail, the city of Kunshan is a center for business, high-tech research and manufacturing and has one of the fastest growing economies in China. A private comprehensive teaching and research university, Duke traces its roots to 1838, and officially became Duke University in 1924. In addition to liberal arts and engineering education at the undergraduate level, Duke offers graduate and professional study in arts and sciences, business, divinity, engineering, the environment, law, public policy, medicine and nursing. Duke enrolls more than 14,000 students in its undergraduate, graduate and professional programs. Duke faculty members Robert J. Lefkowitz and Paul L. Modrich were each honored with the Nobel Prize in Chemistry in 2012 and 2015, respectively. Duke's home campus is situated on nearly 9,000 acres in Durham, North Carolina, a city of more than 275,000 people in the well-known Research Triangle. Duke also is active internationally through the Duke-NUS Graduate Medical School in Singapore, Duke Kunshan University in China and numerous research and education programs across the globe. More than 75 percent of Duke students pursue service-learning opportunities in Durham and around the world through DukeEngage and other programs that advance the university's mission of "knowledge in service to society." Wuhan University is a comprehensive and key national university under the direct administration of the Ministry of Education of China. It is one of the "211 Project" and "985 Project" universities with full support in construction and development from the central and local government of China. It has also been recognized as a top-ten Chinese university by university rankings including the Chinese Universities Alumni Association and Times Higher Education. Wuhan University offers courses of study in a range of disciplines including philosophy, economics, law, education, literature, history, sciences, engineering, agriculture, medicine and management. Since its establishment, Wuhan University has cultivated more than 300,000 professional talents in various occupations, among whom there are more than 100 members of the Chinese Academy of Science and the Chinese Academy of Engineering. They have made great contributions to the national construction and social advancement. The remarkable achievements of Wuhan University have won the university an extensive international reputation. In 1999, the journal Science listed Wuhan University as one of the most prominent institutions of higher education in China.
Wuhan University | Date: 2014-04-30
A daily electricity generation planning method of a cascade hydropower plants is disclosed, and the method is comprised of the steps as follows: step 1, regardless of the constraints for opening and closing the generator, taking the power similarity between the power plant group and the typical demand as one of optimization objectives, and performing a first optimization to obtain a daily electricity generation plan; step 2, according to the derived daily electricity generation plan, determining an opening and closing status for the generator; and step 3, considering the constraints for opening and closing the generator, taking the power similarity between the power plant group and the typical demand as the optimization objective, performing a second optimization to obtain the daily electricity generation plan.
Wuhan University | Date: 2016-12-13
A method for forecasting flood, the method including: 1) collecting historical flood information, estimating a mean concentration time of a basin, and determining a length of a lead time; 2) establishing hydrological models, inputting hydrological variables including precipitation and evaporation to the hydrological models while neglecting the precipitation within lead times; 3) determining an objective function, which is a sum of squared errors between a forecasted streamflow and an observed streamflow within multiple lead times, and utilizing optimized algorithms to calibrate hydrological model parameters; and 4) selecting criteria to evaluate forecasting performance of the hydrological model including a Nash-Sutcliffe efficiency, a root mean square error, a water balance index, a qualified rate of peak flow, and a qualified rate of a peak time.
Wuhan University | Date: 2017-02-20
A perovskite thin-film photovoltaic cell, including: a transparent conductive substrate, an electron transport layer, a perovskite absorption layer, a hole transport layer, and a metal electrode in that order. The electron transport layer is a tin dioxide thin-film. The invention also provides a method for preparing the perovskite thin-film photovoltaic cell. The method includes: (1) cleaning the transparent conductive substrate and then drying the transparent conductive substrate using nitrogen gas; (2) coating a SnO_(2 )electron transport layer on the transparent conductive substrate; (3) coating a CH_(3)NH_(3)PbI_(3-x)Cl_(x )or CH_(3)NH_(3)PbI_(3 )absorber on the electron transport layer; and (4) spin-coating a solution including hole transport material on the perovskite absorber layer and then evaporating the metal electrode.
Wu W.,Wuhan University
Nanoscale | Year: 2017
Owing to their capability of bypassing conventional high-priced and inflexible silicon based electronics to manufacture a variety of devices on flexible substrates by using large-scale and high-volume printing techniques, printed electronics (PE) have attracted increasing attention in the field of manufacturing industry for electronic devices. This simple and cost-effective approach could enhance current methods of constructing a patterned surface for nanomaterials and offer opportunities for developing fully-printed functional devices, especially offering the possibility of ubiquitous low-cost and flexible devices. This review presents a summary of work to date on the inorganic nanomaterials involved in PE applications, focused on the utilization of inorganic nanomaterials-based inks in the successful preparation of printed conductive patterns, electrodes, sensors, thin film transistors (TFTs) and other micro-/nanoscale devices. The printing techniques, sintering methods and printability of functional inks with their associated challenges are discussed, and we look forward so you can glimpse the future of PE applications. © The Royal Society of Chemistry 2017.