后适应在接受直接PCI治疗的急性ST段抬高性心肌梗死患者中的临床疗效:基于随机对照试验的meta分析(英文)

目的:探讨后适应对接受直接经皮冠状动脉介入(PCI)治疗的急性ST段抬高性心肌梗死(STEMI)患者心血管不良事件的影响。创新点:进一步明确后适应处理对STEMI患者临床预后的影响。方法:对符合入选标准的随机对照临床试验进行meta分析。结论:缺血后适应显著降低ST段抬高性心肌梗死患者心衰风险。     

The influence of several doped ions on gas sensitivity of hematite

１　Ｉｎｔｒｏｄｕｃｔｉｏｎ　Ｉｎｏｒｄｅｒｔｏｄｅｔｅｃｔｔｏｘｉｃｇａｓｌｅａｋａｇｅａｎｄｔｏｐｒｅｖｅｎｔｓｐｏｎｔａｎｅｏｕｓｃｏｍｂｕｓｔｉｏｎａｎｄｅｘｐｌｏｓｉｏｎｏｆｃｏｍｂｕｓｔｉｂｌｅｇａｓｅｓａｎｄｏｒｇａｎｉｃｒｅａｇｅｎｔ,ｖａｒｉｏｕｓｓｏｒｔｓｏｆｇａｓｓｅｎｓｏｒｓｈａｖｅｂｅｅｎｄｅｖｅｌｏｐｅｄ,ｔｈｅｄｅｖｉｃｅｓｔｈａｔｗｅｒｅｓｐｅｃｉａｌｌｙｕｓｅｄｔｏｄｅｔｅｃｔｔｒａｃｅｏｆｔｏｘｉｃｇａｓａｌｓｏｈａｖｅｂｅｅｎｒｅｓｅａｒｃｈｅｄ．Ｔｈｅｂ…     

Wax from Pyrolysis of Waste Plastics as a Potential Source of Phase Change Material for Thermal Energy Storage

Over the past half-century, plastic consumption has grown rapidly due to its versatility, low cost, and unrivaled functional properties. Among the diff erent implemented strategies for recycling waste plastics, pyrolysis is deemed the most economical option. Currently, the wax obtained from the pyrolysis of waste plastics is mainly used as a feedstock to manufacture chemicals and fuels or added to asphalt for pavement construction, with no other applications of wax being reported. Herein, the th...     

雾从哪里来

正“哎,真困。等一下还要上学,先起来呼吸点新鲜空气吧。”我带着睡意起了床。“咦,今天又起雾了呀。”刚起床,我就看见一幢幢房子都罩上了白白的雾,本来的好心情一下子消失得无影无踪,“哎,这几天隔三差五就起雾,真奇怪。”这时,我脑子里立刻冒出了一个问题:雾是怎么形成的?有了这个问题,我的睡意全无,赶紧跑到学校,问知识渊博的“小博士”。可是“小博士”竟然也不知道。     

Science Letters：A robust statistical procedure to discover expression biomarkers using microarray genomic expression data

Microarray has become increasingly popular biotechnology in biological and medical researches, and has been widely applied in classification of treatment subtypes using expression patterns of biomarkers. We developed a statistical procedure to identify expression biomarkers for treatment subtype classification by constructing an F-statistic based on Henderson method Ⅲ. Monte Carlo simulations were conducted to examine the robustness and efficiency of the proposed method. Simulation results showed that our method could provide satisfying power of identifying differentially expressed genes （DEGs） with false discovery rate （FDR） lower than the given type I error rate. In addition, we analyzed a leukemia dataset collected from 38 leukemia patients with 27 samples diagnosed as acute lymphoblastic leukemia （ALL） and 11 samples as acute myeloid leukemia （AML）. We compared our results with those from the methods of significance analysis of microarray （SAM） and microarray analysis of variance （MAANOVA）. Among these three methods, only expression biomarkers identified by our method can precisely identify the three human acute leukemia subtypes.     

Detection of gross errors using mixed integer optimization approach in process industry

A novel mixed integer linear programming （NMILP） model for detection of gross errors is presented in this paper. Yamamura et al.（1988） designed a model for detection of gross errors and data reconciliation based on Akaike information criterion （AIC）. But much computational cost is needed due to its combinational nature. A mixed integer linear programming （MILP） approach was performed to reduce the computational cost and enhance the robustness. But it loses the super performance of maximum likelihood estimation. To reduce the computational cost and have the merit of maximum likelihood estimation, the simultaneous data reconciliation method in an MILP framework is decomposed and replaced by an NMILP subproblem and a quadratic programming （QP） or a least squares estimation （LSE） subproblem. Simulation result of an industrial case shows the high efficiency of the method.     

Transformer real-time reliability model based on operating conditions

Operational reliability evaluation theory reflects real-time reliability level of power system. The component failure rate varies with operating conditions. The impact of real-time operating conditions such as ambient temperature and transformer MVA (megavolt-ampere) loading on transformer insulation life is studied in this paper. The formula of transformer failure rate based on the winding hottest-spot temperature (HST) is given. Thus the real-time reliability model of transformer based on oper- ating conditions is presented. The work is illustrated using the 1979 IEEE Reliability Test System. The changes of operating conditions are simulated by using hourly load curve and temperature curve, so the curves of real-time reliability indices are ob- tained by using operational reliability evaluation.     

高校学生宿舍文化建设的有效途径

加强学生宿舍管理,开发和建设宿舍文化,是高校思想政治工作的重要组成部分和加强高校思想政治教育的必要手段.本文拟从高校育人工作的目标和要求出发,结合学生宿舍的具体情况,积极探索学生宿舍文化建设的有效途径.     

Role of deubiquitinating enzymes in DNA double-strand break repair

DNA is the hereditary material in humans and almost all other organisms. It is essential for maintaining accurate transmission of genetic information. In the life cycle, DNA replication, cell division, or genome damage, including that caused by endogenous and exogenous agents, may cause DNA aberrations. Of all forms of DNA damage, DNA double-strand breaks(DSBs) are the most serious. If the repair function is defective, DNA damage may cause gene mutation, genome instability, and cell chromosome loss, which in turn can even lead to tumorigenesis. DNA damage can be repaired through multiple mechanisms. Homologous recombination(HR) and non-homologous end joining(NHEJ) are the two main repair mechanisms for DNA DSBs. Increasing amounts of evidence reveal that protein modifications play an essential role in DNA damage repair.Protein deubiquitination is a vital post-translational modification which removes ubiquitin molecules or polyubiquitinated chains from substrates in order to reverse the ubiquitination reaction. This review discusses the role of deubiquitinating enzymes(DUBs) in repairing DNA DSBs. Exploring the molecular mechanisms of DUB regulation in DSB repair will provide new insights to combat human diseases and develop novel therapeutic approaches.     

A method to eliminate effect of phase noise in OFDM synchronization system

１　Ｉｎｔｒｏｄｕｃｔｉｏｎ　ＴｈｅＯＦＤＭｔｅｃｈｎｏｌｏｇｙｉｓｗｉｄｅｌｙｕｓｅｄｉｎｔｈｅｍｏｄｅｒｎｈｉｇｈｓｐｅｅｄｄａｔａｃｏｍｍｕｎｉｃａｔｉｏｎａｐｐｌｉｃａｔｉｏｎｓ,ｓｕｃｈａｓｔｈｅｄｉｇｉｔａｌｂｒｏａｄｃａｓｔｉｎｇｓｙｓｔｅｍｉｎｃｌｕｄｉｎｇＤＶＢ（ｔｈｅｄｉｇｉｔａｌｖｉｄｅｏｂｒｏａｄｃａｓｔｉｎｇ）ａｎｄＤＡＢ（ｔｈｅｄｉｇｉｔａｌａｕｄｉｏｂｒｏａｄｃａｓｔｉｎｇ）,ｔｈｅｂｒｏａｄｂａｎｄａｃｃｅｓｓｎｅｔｗｏｒｋｉｎｃｌｕｄｉｎｇＡＤＳＬ（ｔｈｅａｓ…