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Eco-friendly high-performance silicide thermoelectric materials

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National Science Review 2017年第4期4卷 611-626页

作者： Wei Liu kang yin Qingjie Zhang Ctirad Uher Xinfeng Tang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Department of Physics University of Michigan

Silicide-based thermoelectrics are examples of cost-efficient and environmentally friendly new energy materials, which can be used for power-generation applications in the range of 500–800 K. We review the research focusing on the exploration of n-type Mg2IV-based solid solutions(IV = Si, Ge and Sn) and summarize the most prominent discoveries achieved so far in their studies. Owing to their superior performance compared to other silicides, including p-type Mg2IV, higher manganese silicides(HMS) are commonly considered as a suitable p-type material to be used in thermoelectric modules in conjunction with n-type Mg2IV-based solid solutions for mid-temperature power-generation applications. We describe the strategies used to improve the thermal and electronic transport properties of n-type Mg2IV-based solid solutions and mention some key features of HMS. We also point out the importance of mechanical properties and thermal stability of this family of materials and offer perspectives on the future research work to further improve their performance.

关键词： silicides band convergence carrier doping composition manipulation mechanical properties thermal stability

A review of China's energy consumption structure and outlook based on a long-range energy alternatives modeling tool

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Petroleum Science 2017年第1期14卷 214-227页

作者： kang-yin Dong Ren-Jin Sun Hui Li Hong-Dian Jiang School of Business Administration China University of Petroleum-Beijing Department of Agricultural Food and Resource EconomicsRutgers State University of New Jersey Energy Systems Research Center University of Texas at Arlington

China＇s energy consumption experienced rapid growth over the past three decades, raising great concerns for the future adjustment of China＇s energy consumption structure. This paper first presents the historical evidence on China＇s energy consumption by the fuel types and sectors. Then, by establishing a bottom-up accounting framework and using long-range energy alternatives plan- ning energy modeling tool, the future of China＇s energy consumption structure under three scenarios is forecast. According to the estimates, China＇s total energy con- sumption will increase from 3014 million tonnes oil equivalent （Mtoe） in 2015 to 4470 Mtoe in 2040 under the current policies scenario, 4040 Mtoe in 2040 under the moderate policies scenario and 3320 Mtoe in 2040 under the strong policies scenario, respectively, lower than those of the IEA＇s estimations. In addition, the clean fuels （gas, nuclear and renewables） could be an effective alternative to the conventional fossil fuels （coal and oil） and offer much more potential. Furthermore, the industry sector has much strong reduction potentials than the other sectors. Finally, this paper suggests that the Chinese government should incorporate consideration of adjustment of the energy consumption structure into existing energy policies and measures in the future.

关键词： Energy consumption structure China-LEAPmodel Scenario analysis Clean fuels Industrial sector

Notes and correspondence on ensemble-based three-dimensional variational filters

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Journal of Zhejiang University-Science C(Computers and Electronics) 2013年第8期14卷 634-641页

作者： Hong-ze LENG Jun-qiang SONG Fu-kang yin Xiao-qun CAO College of Computer National University of Defense Technology

Several ensemble-based three-dimensional variational (3D-Var) filters are compared. These schemes replace the static background error covariance of the traditional 3D-Var with the ensemble forecast error covariance, but generate analysis ensemble anomalies (perturbations) in different ways. However, it is demonstrated in this paper that they are all theoretically equivalent to the ensemble transformation Kalman filter (ETKF). Furthermore, a new method named EnPSAS is presented. The analysis shows that EnPSAS has a small condition number and can apply covariance localization more easily than other ensemble-based 3D-Var methods.

关键词： 3D-Var Ensemble Kalman filter (EnKF) Ensemble transformation Kalman filter (ETKF) Physical space analysis system (PSAS) Ensemble data assimilation

Upregulation of cell adhesion through delta Np63 silencing in human 5637 bladder cancer cells

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Asian Journal of Andrology 2012年第5期14卷 788-792页

作者： Yun-Feng He Dai-yin Tian Zheng-Jin Yi Zhi-kang yin Chun-Li Luo Wei Tang Xiao-Hou Wu Department of Urology The First Affiliated HospitalChongqing Medical UniversityChongqing 400016China Department of Respiratory Medicine Children's HospitalChongqing Medical UniversityChongqing 400014China Department of Urology Staffs'General Hospital of Panzhihua Iron and Steel Ltd Co.Panzhihua 617023China Faculty of Laboratory Medicine Chongqing Medical UniversityChongqing 400016China

Some researchs have demonstrated that the loss of delta Np63 is associated with aggressive phenotypes and poor prognosis. However, other research indicates that delta Np63 is considered to have oncogenic properties. Delta Np63 overexpression is often observed in association with the oncogenic growth of squamous cell carcinomas and bladder cancer. In this study, we investigated the oncogenic role of delta Np63 in regulating cell adhesion in transitional cell carcinoma of the bladder （TCCB）. The cells were stably transfected with the delta Np63 short hairpin RNA （shRNA） plasmid. Immunocytochemistry was performed to determine the knockdown efficiency. Tumour cells were studied for their ability to adhere to vascular endothelial cells. Confocal microscopy was used to analyse the changes in cytoskeletal F-actin. F-actin expression was measured by flow cytometry. Cell invasion ability was assessed using transwell chambers. The delta Np63-silenced tumour cells were shown to adhere more tightly than controls to vascular endothelial cells （P〈0.05）. The content of F-actin in the delta Np63-silenced cells was enhanced （P〈0.05）. The Matrigel invasion assays showed that human 5637 bladder cancer cells had a lower degree of motility when transfected with pdelta Np63-shRNA （P〈0.05）. In conclusion, silencing of the delta Np63 expression can enhance the adhesiveness of 5637 cells by inducing F-actin cytoskeleton production, and it will possibly inhibit the TCCB invasion and metastasis.

关键词： bladder transitional cell carcinoma cell adhesion delta Np63

Selecting China＇s strategic petroleum reserve sites by multi-objective programming model

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Petroleum Science 2017年第3期14卷 622-635页

作者： Hui Li Ren-Jin Sun kang-yin Dong Xiu-Cheng Dong Zhong-Bin Zhou Xia Leng School of Business Administration China University of Petroleum-Beijing Beijing 102249 China Energy Systems Research Center University of Texas at Arlington Arlington TX 76019 USA Department of Agricultural Food and Resource EconomicsRutgers State University of New Jersey New BrunswickNJ 08901 USA School of Management Yangtze University Hubei 434023China Sinopec Offshore Oilfield Services Company Shanghai 200000 China

An important decision for policy makers is selecting strategic petroleum reserve sites. However, policy makers may not choose the most suitable and efficient locations for strategic petroleum reserve（SPR） due to the complexity in the choice of sites. This paper proposes a multi-objective programming model to determine the optimal locations for China＇s SPR storage sites. This model considers not only the minimum response time but also the minimum transportation cost based on a series of reasonable assumptions and constraint conditions. The factors influencing SPR sites are identified to determine potential demand points and candidate storage sites. Estimation and suggestions are made for the selection of China＇s future SPR storage sites based on the results of this model. When the number of petroleum storage sites is less than or equals 25 and the maximum capacity of storage sites is restricted to 10 million tonnes, the model＇s result best fit for the current layout scheme selected thirteen storage sites in four scenarios. Considering the current status of SPR in China,Tianjin, Qingdao, Dalian, Daqing and Zhanjiang, Chengdu,Xi＇an, and Yueyang are suggested to be the candidate locations for the third phase of the construction plan. The locations of petroleum storage sites suggested in this work could be used as a reference for decision makers.

关键词： Strategic petroleum reserve Storage siteselection Multi-objective modeling China

Application value analysis of magnetic resonance imaging and computed tomography in the diagnosis of intracranial infection after craniocerebral surgery

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World Journal of Clinical Cases 2020年第23期8卷 5894-5901页

作者： Lan Gu Xiao-Liang Yang Hui-kang yin Ze-Hua Lu Cheng-Jun Geng Department of Medical Imaging Wuxi Medical College of Anhui Medical University904th Hospital of Joint Logistic Support Force of PLAWuxi 214044Jiangsu ProvinceChina

BACKGROUND Intracranial infection is a common clinical *** tomography(CT)and magnetic resonance imaging(MRI)have certain sensitivity and have good diagnostic *** To study the application value of MRI and CT in the diagnosis of intracranial infection after craniocerebral *** We selected 82 patients who underwent craniocerebral surgery(including 40 patients with intracranial infection and 42 patients without infection)during the period from April 2016 to June 2019 in our *** 82 patients received CT and MRI examinations,and their clinical data were reviewed.A retrospective analysis was performed,and the coincidence rate of positive diagnosis and the overall diagnosis coincidence rate of different pathogenic infection types were measured with the two examination *** diagnostic sensitivity and specificity as well as the positive and negative predictive values of the two examination methods were *** For all types of pathogenic infections(Staphylococcus aureus,Staphylococcus hemolyticus,Staphylococcus epidermidis,and others),MRI scans had higher positive diagnostic coincidence rates than CT scans;the overall diagnostic coincidence rate,sensitivity,specificity,positive predictive value,and negative predictive values were significantly higher with MRI examinations than with CT examinations,and the differences were statistically significant(P<0.05).CONCLUSION MRI examination can accurately diagnose intracranial infection after clinical craniocerebral *** with CT,MRI had higher diagnostic *** diagnostic sensitivity and specificity,the diagnostic coincidence rate,and the positive and negative predictive values were significantly higher with MRI than with conventional CT,which can be actively promoted.

关键词： Computed tomography Magnetic resonance imaging Craniocerebral surgery Diagnosis of intracranial infection Diagnostic efficacy Comparative study

In the Modern Mood for Love

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Beijing Review 2022年第4期65卷 44-45页

作者： yin kang 不详

In a simple and traditional building in Beijing’s Dongcheng District,qipao master Li Kan is putting the final revisions on several dresses she has created for her *** the corner of her studio,a finished version daintily dangles from the clothes rack."We feature both the classic Beijing-style qipao,or cheongsam,and modified ones,catering to women of all ages,"said Li to Beijing Review.

关键词： finished dress client

Electrocardiogram-based artificial intelligence for the diagnosis of heart failure:a systematic review and meta-analysis

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Journal of Geriatric Cardiology 2022年第12期19卷 970-980,1011-1015页

作者： Xin-Mu LI Xin-Yi GAO Gary Tse Shen-Da HONG kang-yin CHEN Guang-Ping LI Tong LIU Tianjin Key Laboratory of Ionic-Molecular Function of Cardiovascular Disease Department of CardiologyTianjin Institute of CardiologySecond Hospital of Tianjin Medical UniversityTianjinChina Kent and Medway Medical School CanterburyUnited Kingdom National Institute of Health Data Science at Peking University Peking UniversityBeijingChina Institute of Medical Technology Peking University Health Science CenterBeijingChina

BACKGROUND The electrocardiogram(ECG)is an inexpensive and easily accessible investigation for the diagnosis of cardiovascular diseases including heart failure(HF).The application of artificial intelligence(AI)has contributed to clinical practice in terms of aiding diagnosis,prognosis,risk stratification and guiding clinical *** aim of this study is to systematically review and perform a meta-analysis of published studies on the application of AI for HF detection based on the *** We searched Embase,PubMed and Web of Science databases to identify literature using AI for HF detection based on ECG *** quality of included studies was assessed using the Quality Assessment of Diagnostic Accuracy Studies 2(QUADAS-2)***-effects models were used for calculating the effect estimates and hierarchical receiver operating characteristic curves were *** analysis was *** and the risk of bias were also *** A total of 11 studies including 104,737 subjects were *** area under the curve for HF diagnosis was 0.986,with a corresponding pooled sensitivity of 0.95(95%CI:0.86–0.98),specificity of 0.98(95%CI:0.95–0.99)and diagnostic odds ratio of 831.51(95%CI:127.85–5407.74).In the patient selection domain of QUADAS-2,eight studies were designated as high *** According to the available evidence,the incorporation of AI can aid the diagnosis of ***,there is heterogeneity among machine learning algorithms and improvements are required in terms of quality and study design.

关键词： diagnosis assessed specificity

El ventrilocuo de Beijing

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今日中国（西文版） 2022年第9期 56-57页

作者： yin kang 不详