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Journal of Pharmaceutical Analysis 2016年第3期6卷 203-206页

作者： Hong-Peng Chen Wen-jia pan Nan Tang Yuan Zhang Mei-Ling Yu xing-da wu School of Information Engineering Guangdong Medical University Xincheng Road Dongguan 52380& China School of Pharmacy Guangdong Medical University Xincheng Road Dongguan 523808 China Department of Pharmacology Zhongshan School of Medicine Sun Yat-Sen University Guangzhou 510080 China Department of Pharmacy the First Affiliated Hospital of Bengbu Medical College Benghu 233004 China

Two non-destructive instrumental methods, infrared spectroscopy （IR） and X-ray diffraction （XRD）, were studied for qualiW evaluation of Lobelia chinensis Lour. （L chinensis）. We obtained the IR spectra and XRD patterns of L chinensis collected from different sources. The similarity of samples was analyzed by cal- culating the cosine coefficient. The cosine values were in the range of 0.83-0.90, indicating that the main components ofL chinensis samples are similar. Sample L1 and L6 showed a slightly lower similarity than that of L2, L3, L4, L5 detected by the two methods, which revealed that IR and XRD methods exhibited analogous detection ability for quality evaluation of L. chinensis. The two methods could be highly re- commended as simple and rapid detection means for quality evaluation of L. chinensis.

关键词： Lobelia chinensis Lour Infrared spectroscopy X-ray diffraction Quality evaluation

Determination of the geographical origin of Chinese teas based on stable carbon and nitrogen isotope ratios

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2012年第10期13卷 824-830页

作者： Long ZHANG jia-rong pan Cheng ZHU College of Life Sciences Zhejiang UniversityHangzhou 310058China College of Life Sciences China Jiliang UniversityHangzhou 310018China

The objective of this study was to investigate the geographical origin of Chinese teas using carbon and nitrogen stable isotope ratio *** results showed that inter-provincial dispersion of teas in Guangdong(GD),Guangxi(GX),Hainan(HA),Fujian(FJ),Shandong(SD),Sichuan(SC),Chongqing(CQ),and Henan(HN) provinces was high,while in Zhejiang(ZJ),Hubei(HB),Yunnan(YN),and Anhui(AH) provinces,it was *** samples from GD,GX,HA,and FJ provinces were clustered in one group and separated from those from AH and HB ***,carbon and nitrogen stable isotope ratio technology could discriminate teas from among some provinces of China,but not from among *** separation might be obtained with a combination of isotopic ratios and other indexes,such as elemental data and organic components.

关键词： Geographical origin Stable carbon isotope ratios Stable nitrogen isotope ratios Tea

Juvenile hormone regulates photoperiod-mediated male reproductive diapause via the methoprene-tolerant gene in the ladybeetle Harmonia axyridis

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Insect Science 2022年第1期29卷 139-150页

作者： Qiao Gao Bei Li Bing-Xin Wei Wen Liu pan Wang jia-Lu Wang xing-Miao Zhou Xiao-Ping Wang Hubei Key Laboratory of Insect Resources Utilization and Sustainable Pest Management College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan430070China Department of Plant Protection Wuhan Vegetable Research InstituteWuhan430065China

Juvenile hormone (JH) absence induces photoperiod-mediated reproductive diapause, which is characterized by reproductive cessation. Although the role of methoprene-tolerant (Met)-mediated JH signaling in photoperiod-mediated female reproduction has been well documented, its role in male reproduction remains unclear. In this study, we investigated the role of JH in regulating photoperiod-mediated development of the male internal reproductive system (IRS) in the predatory ladybeetle Harmonia axyridis (Pallas). In a previous study, we found that adult male H. axyridis reared under either a short-day (SD) or long-day (LD) photoperiod had obvious differences in IRS development, but we were unable to identify the regulators of male reproductive diapause. In this study, we found that beetles reared under an SD photoperiod had significantly lower JH titer and a relatively undeveloped male IRS compared with those reared under an LD photoperiod. Additionally, application of the JH analog (JHA) methoprene promoted IRS development. Furthermore, Met knockdown strongly blocked JH signaling in males reared under the LD photoperiod, thereby slowing IRS development. Moreover, exogenous JHA did not reverse the suppressed development of the male IRS caused by Met knockdown. These results indicate that photoperiod regulates male IRS development in H. axyridis through a conserved Met-dependent JH signaling pathway.

关键词： Harmonia axyridis juvenile hormone male reproductive diapause methoprene-tolerant photoperiod RNAi

Dynamic analysis of a concentrating photovoltaic/concentrating solar power (CPV/CSP) hybrid system

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Science China(Technological Sciences) 2019年第11期62卷 1987-1998页

作者： HAN Xue XU Chao pan XinYu JU xing DU XiaoZe Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of MOE North China Electric Power University

Concentrating photovoltaic/concentrating solar power(CPV/CSP)systems suffer from varying irradiation and extreme working *** this study,a dynamic physical model is developed for the CPV/CSP hybrid system to analyze the dynamic responses of several key parameters,such as the solar radiation saltation or linear variation to represent the typical weather *** results show that the hybrid system could rapidly reach the steady state in less than about 53 s after the solar radiation saltation increases or decreases by 10%.The response time reflects that the thermal hysteresis of the hybrid system is mainly determined by varying the outlet temperature of R134a from the solar thermal ***,when the solar radiation changes linearly,a lower gradient is beneficial to remit the thermal hysteresis of the hybrid system and improve the thermal stability,and the parameters could be treated as the steady state values with a gradient of less than 0.2 W m^-2 s^-***,the quasi-steady state model was used to analyze the all-day dynamic performance of the hybrid *** shows that the power output and the flow rate are directly related to the direct normal irradiance(DNI),while the outlet temperature of R134a vapor could be almost constant except for the starting and stopping periods.

关键词： concentrating photovoltaic concentrating solar power transient simulation solar radiation disturbance dynamic performance

Multi-parameters uncertainty analysis of logistic support process based on GERT

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Journal of Systems Engineering and Electronics 2014年第6期25卷 1011-1019页

作者： Yong Wu xing pan Rui Kang Congjiao He Liming Gong School of Reliability and Systems Engineering Beihang University Board of Deputies of Air Force Ordnance and General Equipment Military

The uncertainty analysis is an effective sensitivity analysis method for system model analysis and optimization. However,the existing single-factor uncertainty analysis methods are not well used in the logistic support systems with multiple decision-making factors. The multiple transfer parameters graphical evaluation and review technique（MTP-GERT） is used to model the logistic support process in consideration of two important factors, support activity time and support activity resources, which are two primary causes for the logistic support process uncertainty. On this basis,a global sensitivity analysis（GSA） method based on covariance is designed to analyze the logistic support process uncertainty. The aircraft support process is selected as a case application which illustrates the validity of the proposed method to analyze the support process uncertainty, and some feasible recommendations are proposed for aircraft support decision making on carrier.

关键词： logistic support process uncertainty analysis graphi-cal evaluation and review technique(GERT) sensitivity analysis

Latest research advances on magnesium and magnesium alloys worldwide

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Journal of Magnesium and Alloys 2020年第1期8卷 1-41页

作者： jiangfeng Song jia She Daolun Chen Fusheng pan National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China State Key Laboratory of Mechanical Transmissions College of Materials Science and EngineeringChongqing UniversityChongqing 400044China Department of Mechanical and Industrial Engineering Ryerson UniversityTorontoOntario M5B 2K3Canada

In the past two years,significant progresses have been achieved in high-performance cast and wrought magnesium and magnesium alloys,magnesium-based composites,advanced cast technologies,advanced processing technologies,and functional magnesium materials,such as Mg ion batteries,hydrogen storage Mg materials,bio-magnesium alloys,*** contributions to the development of new magnesium alloys and their processing technologies have been made by Chongqing University,Shanghai jiaotong University,Chinese Academy of Sciences,Helmholtz Zentrum Geesthacht,Queensland University,Brunel University,*** review paper is aimed to summarize the latest important advances in cast magnesium alloys,wrought magnesium alloys and functional magnesium materials worldwide in 2018–2019,including both the development of new materials and the innovation of their processing *** on the issues and challenges identified here,some future research directions are suggested,including further development of high-performance magnesium alloys having high strength and superior plasticity together with high corrosion resistance and low cost,and fundamental research on the phase diagram,diffusion,precipitation,etc.,as well as the development of advanced welding and joining technology.

关键词： Cast magnesium alloys Wrought magnesium alloys Functional magnesium materials Cast and processing technologies Corrosion and surface treatment International standard

HEP quantification strategy based on modified CREAM

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Journal of Systems Engineering and Electronics 2019年第4期30卷 815-822页

作者： pan xing WANG Huixiong LIN Ye LIU Tun WANG Xiaoxia School of Reliability and Systems Engineering Beihang University

The accurate quantification of human error probability(HEP) has long been a main pursuit for most human reliability analysis(HRA) methods. This paper proposes a strategy to analyzeand predict human error on the basis of a further modification of theexisting cognitive reliability and error analysis method (CREAM)in HRA. Through providing a broader definition for the key parametersused in the quantification method, this paper produces arelatively flexible strategy to determine the nominal HEP (HEP0).Basing on this strategy, the actual quantification of HEP in CREAMis able to be applied to more verified conditions. To prove the validityof the method proposed, a case study of spacecraft launch isalso introduced, in which the prediction derived from the method isproved consistent with real field data.

关键词： human reliability cognitive reliability and error analysismethod(CREAM) context influence nominal human errorprobability(HEP0)

Transceiver designs with matrix-version water-filling architecture under mixed power constraints

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Science China(Information Sciences) 2016年第10期59卷 169-180页

作者： Chengwen xing Zesong FEI Yiqing ZHOU Zhengang pan Hualei WANG School of Information and Electronics Beijing Institute of Technology Wireless Communication Research Center Institute of Computing TechnologyChinese Academy of Sciences China Mobile Research Institute

In this paper, we investigate the multiple-input multiple-output(MIMO) transceiver design under an interesting power model named mixed power constraints. In the considered power model, several antenna subsets are constrained by sum power constraints while the other antennas are subject to per-antenna power constraints. This kind of transceiver designs includes both the transceiver designs under sum power constraint and per-antenna power constraint as its special cases. This kind of designs is of critical importance for distributed antenna systems(DASs) with heterogeneous remote radio heads(RRHs) such as cloud radio access networks(C-RANs). In our work, we try to solve the optimization problem in an analytical way instead of using some famous software packages e.g., CVX or Se Du Mi. In our work, to strike tradeoffs between performance and complexity, both iterative and non-iterative solutions are proposed. Interestingly the non-iterative solution can be interpreted as a matrix-version water-filling solution extended from the well-known and extensively studied vector version. Finally, simulation results demonstrate the accuracy of our theoretical results.

关键词： convex optimization MIMO matrix-version water-filling transceiver designs mix power constraints

Multi-scale fusion residual encoder-decoder approach for low illumination image enhancement

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The Journal of China Universities of Posts and Telecommunications 2022年第2期29卷 63-72页

作者： pan Xiaoying Wei Miao Wang Hao jia Fengzhu School of Computer Science and Technology Xi'an University of Posts and TelecommunicationsXi'an 710121China Shaanxi Key Laboratory of Network Data Analysis and Intelligent Processing Xi'an University of Posts and TelecommunicationsXi'an 710121China School of Software Northwestern Polytechnical UniversityXi'an 710072China

The sensing light source of the line scan camera cannot be fully exposed in a low light environment due to the extremely small number of photons and high noise,which leads to a reduction in image quality.A multi-scale fusion residual encoder-decoder(FRED)was proposed to solve the *** directly learning the end-to-end mapping between light and dark images,FRED can enhance the image’s brightness with the details and colors of the original image fully restored.A residual block(RB)was added to the network structure to increase feature diversity and speed up network ***,the addition of a dense context feature aggregation module(DCFAM)made up for the deficiency of spatial information in the deep network by aggregating the context’s global multi-scale *** experimental results show that the FRED is superior to most other algorithms in visual effect and quantitative evaluation of peak signal-to-noise ratio(PSNR)and structural similarity index measure(SSIM).For the factor that FRED can restore the brightness of images while representing the edge and color of the image effectively,a satisfactory visual quality is obtained under the enhancement of low-light.

关键词： image enhancement low illumination feature fusion residual network

EPOR mRNA level: A valuable prognostic indicator for patients with ER+ breast cancer

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Asian Pacific Journal of Tropical Medicine 2018年第4期11卷 297-304页

作者： Jing pan xing-Hua Han Wei Wang Yue-Yin pan Department of Medical Oncology Anhui Provincial Hospital Anhui Medical University Department of Medical Oncology The First Affiliated Hospital of University of Science and Technology of China

Objective: To explore the expression level and prognostic significance of erythropoietin receptor(EPOR) in patients with breast cancer(BRCA) based on estrogen receptor(ER) status and different molecular subtypes. Methods: The Cancer Genome Atlas(TCGA) and GTEx data were collected in GEPIA initially to identify the dysregulated genes. Further, bc-GenExMiner 4.1 online bioinformatics tool was used to evaluate EPOR mRNA differential expression level according to different classification of clinicopathologic parameters in patients with breast cancer. Additionally, the prognostic value between EPOR mRNA expression and free survival of metastatic relapse(MR) or any event(AE, namely any relapse or death) in patients with breast cancer was done. Results: EPOR mRNA was significantly downregulated in BRCA(1 085 cases) compared to normal tissues(291 cases)(P<0.05). Univariate Cox analysis revealed that high EPOR mRNA expression was remarkably correlated to a decreased risk of MR(HR: 0.79, P<0.000 1) and AE(HR: 0.87, P=0.000 7) especially in breast cancer patients with ER+. Besides, high EPOR mRNA level also associated with a favorable MRfree survival(HR: 0.81, P=0.007 2) and AE-free survival(HR: 0.88, P =0.029 9) in ER+ breast cancer patients. However, no similar above phenomenon was detected in ER-patients. Moreover, the subsequent prognostic adjusted analyses and univariate Cox analysis of AE based on SSP or SCM molecular subtypes validated the above results. Conclusion: EPOR mRNA level is a valuable prognostic indicator for patients with ER+ breast cancer.

关键词： Breast cancer EPOR Prognosis Bioinformatics