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| 1 | COVID-19 Outbreak Caused by Contaminated Packaging of Imported Cold-Chain Products—Liaoning Province,China,July 2020显示文摘Summary What is known about this topic?Few major outbreaks of coronavirus disease 2019(COVID-19)have occurred in China after major nonpharmaceutical interventions and vaccines have been deployed and implemented.However,sporadic outbreaks that had high possibility to be linked to cold chain products were reported in several cities of China..What is added by this report?In July 2020,a COVID-19 outbreak occurred in Dalian,China.The investigations of this outbreak strongly suggested that the infection source was from COVID-19 virus-contaminated packaging of frozen seafood during inbound unloading personnel contact.What are the implications for public health practice?Virus contaminated paper surfaces could maintain infectivity for at least 17–24 days at-25℃.Exposure to COVID-19 virus-contaminated surfaces is a potential route for introducing the virus to a susceptible population.Countries with no domestic transmission of COVID-19 should consider introducing prevention strategies for both inbound travellers and imported goods.Several measures to prevent the introduction of the virus via cold-chain goods can be implemented. | Huilai Ma1 Jianqun Zhang Ji Wang Ying Qin Cao Chen Yang Song Liang Wang Jun Meng Lingling Mao Fengqin Li Ning Li Jian Cai Yong Zhang Dayan Wang Yunting Xia Hong Wang Shaofeng Jiang Xiang Zhao Peihua Niu Wenjie Tan Tao Ma Yecheng Yao Naiying Mao Zhen Zhu Tianjiao Ji Qian Yang Baoying Huang Li Zhao Jianxing Yu Li Bai Shuangli Zhu Dongyan Wang Yan Zhang Yingwei Sun Mingchun Luan Yanhai Wang Haibo Sun Shihong Yang Zhijian Bo Xiang Ren Zhongjie Li George Fu Gao Wei Yao Wenqing Yao Zijian Feng Wenbo Xu | 2021 | China CDC weekly2021，3，21： | 16 |
| 2 | The Pengguan tectonic dome of Longmen Mountains, Sichuan Province:Mesozoic denudation of a Neoproterozoic magmatic arc-basin system显示文摘Neoproterozoic igneous and metamorphic complexes occur as tectonic domes in the Longmen Mountains of the western margin of the Yangtze Block, and are important in reconstructing the Rodinian supercontinent and constraining the timing and mechanism of tectonic denudational processes. The Pengguan dome consists of granitic intrusions and metamorphic rocks of the Huangshuihe Group and is tectonically overlain by ductilly deformed Sinian to Paleozoic strata. The plutonic intrusions consist of granites with abundant amphibolite enclaves. New LA-ICP-MS zircon U-Pb dating yielded an emplacement age of 809±3 Ma and a protolith age of 844±6 Ma for the granite. The granitic rocks have geochemical signatures typical of A-type granites, indicating their formation under an extensional environment, by melting of newly formed tonalite-trondhjemite-granodiorite (TTG) rocks. A detachment fault, characterized by variable ductile shear deformation of S-C fabric and ESE-ward kinematics, separates the Pengguan dome from the Sinian-Paleozoic cover. 40Ar/39Ar dating of muscovite from the mylonite in the detachment fault of the dome demonstrates that ductile deformation occurred at ~160 Ma. This study indicates the existence of a Neoproterozoic magmatic arc-basin system, which was denudated by a Jurassic middle crustal ductile channel flow along the Longmenshan thrust belt. | YAN DanPing ZHOU MeiFu WEI GuoQing GAO JianFeng LIU ShaoFeng XU Ping SHI XiaoYing | 2008 | Science China Earth Sciences2008，51，11： | 9 |
| 3 | Quantized Phase Step Technique Based on Different Frequency Signals and Its Characteristics显示文摘 | DU Baoqiang DONG Shaofeng ZHOU Wei WANG Yanfeng GUO Shuting | 2013 | Chinese Journal of Electronics2013，22，3： | 4 |
| 4 | A new discrete Fourier transform randomness test显示文摘The randomness of random number generators(RNGs) is important for the reliability of cryptographic systems since the outputs of RNGs are usually utilized to construct cryptographic parameters.Statistical tests are employed to evaluate the randomness of the RNG outputs. The discrete Fourier transform(DFT) test is an important test item of the most popular statistical test suite NIST SP800-22. In the standard NIST DFT test and related improved studies, there exist accuracy and efficiency issues. First, the bit sequences generated by known good RNGs have a high probability to be rejected when the sequences are long or the sequence number is large, due to the deviation between the actual distribution of the test statistic values and the assumed normal distribution. Second, the long test time and high memory consumptions of the complex DFT test algorithm also affect its practicability. To solve these problems, we propose a new DFT test method for long sequences(106 or more bits). Different from the previous DFT test methods focusing on making the distribution of the test statistic values closer to the normal distribution, we reconstruct the statistic to follow the chi-square distribution. Our experiment result shows that our method has higher reliability in the two-level test, and could effectively reduce the test time and the memory consumptions.When applying our method on randomness test, the test efficiency has been increased to about 4 times for 106-bit sequences and 7 times for 107-bit sequences. In conclusion, our method has lower probability of making errors, and is more suitable for practical application scenarios. | Meihui CHEN Hua CHEN Limin FAN Shaofeng ZHU Wei XI Dengguo FENG | 2019 | Science China(Information Sciences)2019，62，3： | 3 |
| 5 | Crystal-KMC: Parallel Software for Lattice Dynamics Monte Carlo Simulation of Metal Materials显示文摘Kinetic Monte Carlo(KMC) is a widely used method for studying the evolution of materials at the microcosmic level. At present, while there are many simulation software programs based on this algorithm, most focus on the verification of a certain phenomenon and have no analog-scale requirement, so many are serial in nature. The dynamic Monte Carlo algorithm is implemented using a parallel framework called SPPARKS, but it does not support the Embedded Atom Method(EAM) potential, which is commonly used in the dynamic simulation of metal materials. Metal material — the preferred material for most containers and components — plays an important role in many fields, including construction engineering and transportation. In this paper, we propose and describe the development of a parallel software program called Crystal-KMC, which is specifically used to simulate the lattice dynamics of metallic materials. This software uses MPI to achieve a parallel multiprocessing mode, which avoid the limitations of serial software in the analog scale. Finally, we describe the use of the parallel-KMC simulation software Crystal-KMC in simulating the diffusion of vacancies in iron, and analyze the experimental results. In addition, we tested the performance of Crystal-KMC in 'meta-Era' supercomputing clusters, and the results show the Crystal-KMC parallel software to have good parallel speedup and scalability. | Jianjiang Li Peng Wei Shaofeng Yang Jie Wu Peng Liu Xinfu He | 2018 | Tsinghua Science and Technology2018，23，4： | 2 |
| 6 | Degradation of organic matterin the sediments of Hongfeng Reservoir显示文摘In this work, the distribution of organic carbon, DNA and lipids in the sediments of Hongfeng Reservoir were described in addition to SO42? profile in pore water. The con- tents of organic carbon in the sediments range from 23.3 to 76.8 mg·g?1, with the peak value appearing at the depth of 8 cm bellow the sediments water interface (SWI), and tend to decrease gradually with sedimentation depth. The concentra- tions of SO42? decreased from 40.50 mg·L?1 to 12.00 mg·L?1 at SWI in top 4 cm sediment, and was kept at 12.0 mg·L?1 bel- low that depth. Newly produced organic carbon can be con- served as long as 14 years in the sediments. The contents of DNA were relatively high in top 9 cm surface sediments, as revealed by agarose gel images, close to those of organic car- bon and sulphate reduction index (SRI). This study shows that bacteria played an important role in organic matter degradation; SO42? is the primary electron acceptor under anaerobic condition in this reservoir; DNA in the lake sedi- ments can provide important information for the study of cycling of nutrient elements in the lake. | WEI Zhongqing LIU Congqiang LIANG Xiaobing WANG Fushun WANG Shaofeng | 2005 | Chinese Science Bulletin2005，50，20： | 2 |
| 7 | Value of big data to finance:observations on an internet credit Service Company in China显示文摘Background:his paper presents a case study on 100Credit,an Internet credit service provider in China.100Credit began as an IT company specializing in e-commerce recommendation before getting into the credit rating business.The company makes use of Big Data on multiple aspects of individuals’online activities to infer their potential credit risk.Methods:Based on 100Credit’s business practices,this paper summarizes four aspects related to the value of Big Data in Internet credit services.Results:1)value from large data volume that provides access to more borrowers;2)value from prediction correctness in reducing lenders’operational cost;3)value from the variety of services catering to different needs of lenders;and 4)value from information protection to sustain credit service businesses.Conclusion:The paper also discusses the opportunities and challenges of Big Databased credit risk analysis,which needs to be improved in future research and practice. | Shaofeng Zhang Wei Xiong Wancheng Ni Xin Li | 2015 | Financial Innovation2015，1，1： | 2 |
| 8 | Preparation of collagen-coated electrospun nanofibers by remote plasma treatment and their biological properties显示文摘 | Yuanyuan Duan Zhongyi Wang Wei Yan Shaohai Wang Shaofeng Zhang Jun Jia | 2007 | Journal of Biomaterials Science Polymer Edition2007，，9： | 1 |
| 9 | Mercury concentrations and air/soil fluxes in Wuchuan mercury mining district, Guizhou province, China显示文摘 | Shaofeng Wang Xinbin Feng Guangle Qiu Lihai Shang Ping Li Zhongqing Wei | 2007 | Atmospheric Environment2007，，28： | 1 |
| 10 | Characteristics of mercury exchange flux between soil and air in the heavily air-polluted area, eastern Guizhou, China显示文摘 | Shaofeng Wang Xinbin Feng Guangle Qiu Xuewu Fu Zhongqing Wei | 2007 | Atmospheric Environment2007，，27： | 1 |
| 11 | An electrocatalyst with anti-oxidized capability for overall water splitting显示文摘 | Chang Yu Huawei Huang Si Zhou Xiaotong Han Changtai Zhao Juan Yang Shaofeng Li Wei Guo Bowen An Jijun Zhao Jieshan Qiu | 2018 | Nano Research2018，11，6： | 1 |
| 12 | Polymer-Supported Bimetallic Ag @ AgAu Nanocomposites: Synthesis and Catalytic Properties 显示文摘 | Shaofeng Zhang Wei Wu Xiangheng Xiao | 2012 | Chemistry-An Asian Journal2012，7，8： | 1 |
| 13 | Combined nanosuspensions from two natural active ingredients for cancer therapy with reduced side effects显示文摘Tumor drug resistance and systemic side effects of chemotherapeutic drugs are the main reasons for the failure of cancer treatment.In recent years,it was found that some natural active ingredients can reverse MDR and regulate body immunity to enhance the efficacy and reduce toxicity of chemotherapeutic drugs.In this paper,a new nanosuspensions,HCPT and QUR hybrid nanosuspensions(HQ-NPs),was prepared by the microprecipitation-high pressure homogenization method to reverse tumor drug resistance,reduce toxicity,and increase therapeutic efficacy.The in vitro investigation results showed that HQ-NPs had a unique shape(particle size was about 216.3±5.9 nm),changed crystalline,and different dissolution rates compared with HCPT-NPs and QUR-NPs,which is attributed to the strong intermolecular forces between HCPT and QUR as indicated by the results of the molecule dock.It was verified that the HQ-NPs could double the retention of HCPT in cells and enhance the cytotoxicity to A549/PTX cells in vitro tests compared with HCPT-NPs.We also found that HQ-NPs can significantly enhance the accumulation of HCPT in tumor sites,improve the antitumor activity of HCPT,and protect the immune organs and other normal tissues(P<0.01),compared with HCPT-NPs.Therefore,hybrid nanosuspensions can offer promising potential as the drug delivery system for HCPT and QUR to increase the therapeutic efficacy and reduce the toxicity of HCPT. | Yonghui Qiao Zhihao Wei Tingting Qin Rufeng Song Zhiqiang Yu Qi Yuan Juan Du Qingbing Zeng Lanlan Zong Shaofeng Duan Xiaohui Pu | 2021 | Chinese Chemical Letters2021，32，9： | 1 |
| 14 | Sequence-Oriented Stochastic Model of RO-TRNGs for Entropy Evaluation显示文摘Ring oscillator-based true random number generators(RO-TRNGs) are widely used to generate unpredictable random numbers for cryptographic systems.Entropy is usually adopted to quantitatively measure the unpredictability of a TRNG. There have been several stochastic models such as the time-oriented and phaseoriented ones built to evaluate the entropy of ElementaryRO-TRNGs with single oscillator. However, these models are not suitable for the TRNGs composed of multiple oscillators(Multiple-RO-TRNGs), which can obtain more randomness and higher throughput. Considering this,we propose a sequence-oriented stochastic model for the entropy evaluation of RO-TRNGs, named the first-order stationary Markov source model. This model is extensible for the Multiple-RO-TRNGs. Based on that, we present a detailed method to determine the entropy of Multiple-ROTRNGs. Our proposed model is verified by experiments.Besides, our method can also be a guide to design ROTRNGs with both high entropy and high throughput. | ZHU Shaofeng XI Wei FAN Limin CHEN Hua CHEN Meihui FENG Dengguo | 2020 | Chinese Journal of Electronics2020，29，2： | 1 |
| 15 | One-pot reaction and subsequent annealing to synthe- sis hollow spherical magnetite and maghemite nanocag- es 显示文摘 | WU Wei XIAO Xiangheng ZHANG Shaofeng | 2009 | Nanoscale Res Lett2009，4，8： | 1 |
| 16 | Effects of Different Picking Time and Different Geographical Provenances on Oil Content of Camellia oleifera显示文摘This paper studied effects of different picking time and different geographical provenances on oil content of Camellia oleifera. The results showed that different picking time had significant effects on the oil content of cold dew seeds and frost's descent seeds. With the delay of picking time,the oil content of cold dew seeds,frost's descent seeds,dry seeds and oil content of seed kernels were significantly increased.There was a significantly positive correlation between the oil content of fresh fruit of cold dew seeds and frost's descent seeds and the dry seed yield of fresh seeds and the oil content of fresh fruit( P < 0. 05),and the correlation coefficient was greater than 0. 85. Besides,the oil content of seed kernels of cold dew seeds was closely correlated with the seed yield of fresh seeds,oil content of fresh fruit,and oil content of fresh seeds. In the process of C. oleifera breeding,the thin coat,high seed yield and high oil content can be taken as the key research directions for future breeding. The oil content of ordinary C. oleifera seeds in 18 counties( cities) was 36. 42%-63. 33%,indicating that there were significant differences in the oil content of C. oleifera in different geographical provenances. In conclusion,according to the study of different picking time,the recommended picking time of cold dew seeds in Hunan area is around October 10,while the best picking time of frost's descent seeds is about October 30. The oil content of C. oleifera fruit in different geographical provenances is quite different. During the development of C. oleifera fruit,the cultivation and management of C. oleifera should be strengthened to increase the oil content of C. oleifera. | Xiaoqin MO Zhen ZHANG Yongzhong CHEN Yanming XU Yinghe PENG Longsheng CHEN Li MA Rui WANG Shaofeng PENG Zhigang LI Xiangnan WANG Meiqun LI Wei TANG | 2018 | Asian Agricultural Research2018，10，10： | 1 |
| 17 | Enhancing mass and energy integration by external recycle in reactive distillation columns显示文摘 | Haisheng Chen Kejin Huang Wei Liu Liang Zhang Shaofeng Wang San‐Jang Wang | 2012 | AIChE J2012，，6： | 1 |
| 18 | Introduction of project teaching method to improve higher vocational talents training mode 显示文摘 | Chen Xiqiu Wei Shaofeng | 2011 | Journal of Yangtze river engineering professional technology institute2011，，09： | 1 |
| 19 | Mercury emission to atmosphere from Lanmuchang Hg–Tl mining area, Southwestern Guizhou, China显示文摘 | Shaofeng Wang Xinbin Feng Guangle Qiu Zhongqing Wei Tangfu Xiao | 2005 | Atmospheric Environment2005，，39： | 1 |
| 20 | Large-scale and controlled synthesis of iron oxide mag- netic short nanotubes: shape evolution, growth mecha- nism, and magnetic properties显示文摘 | Wu Wei Xiao Xiangheng Zhang Shaofeng | 2010 | Journal of Physical Chemistry C2010，114，16： | 1 |
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