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| 1 | Palaeoproterozoic Khondalite Belt in the western North China Craton: New evidence from SHRIMP dating and Hf isotope composition of zircons from metamorphic rocks in the Bayan Ul-Helan Mountains area显示文摘Zircom U-Pb age and Hf isotope analyses were made on gneissic granite and garnet-mica two-feldspar gneiss from the Helanshan Group in the Bayan Ul-Helan Mountains area, the western block of the North China Craton (NCC). Zircons from the gneissic granite commonly show core-mantle-rim structures, with magmatic core, metamorphic mantle and rim having ages of 2323±20 Ma, 1923±28 Ma and 1856±12 Ma, respectively. The core, mantle and rim show similar Hf isotope compositions, with single-stage depleted mantle model ages (TDM1) of 2455 to 2655 Ma (19 analyses). Most of the detrital zircons from the garnet-mica two-feldspar paragneiss have a concentrated U-Pb age distribution, with a weighted mean 207Pb/206Pb age of 1978±17 Ma. A few detrital zircons are older (2871 to 2469 Ma). The age for metamorphic overgrown rim was not determined because of strong Pb loss due to their high U content. The zircons show large variation in Hf isotope composition, with TDM1 ages of 1999 to 3047 Ma. In com- bination with previous studies, the main conclusions are as follows: (1) protolith of the khondalite se- ries in the Helanshan Group formed during Palaeoproterozoic rather than the Archaean as previously considered; (2) The results lend support to the contention that there is a huge Palaeoproterozoic Khondalite (metasedimentary) Belt between the Yinshan Mountains Block and the Ordos Block in the Western Block of NCC; (3) The widely-distributed bodies of early Palaeoproterozoic orthogneisses in the Khondalite Belt might be one of the important sources for detritus material in the khondalite series; (4) Collision between the Yinshan Block, the Ordos Block and the Eastern Block occurred in the same tectonothermal event of late Palaeoproterozoic, resulting in the final assembly of the NCC. | DONG ChunYan LIU DunYi LI JunJian WAN YuSheng ZHOU HongYing LI ChengDong YANG YueHeng XIE LieWen | 2007 | Chinese Science Bulletin2007，52，21： | 52 |
| 2 | Polysaccharides from Angelica sinensis alleviate neuronal cell injury caused by oxidative stress显示文摘Angelica sinensis has antioxidative and neuroprotective effects. In the present study, we aimed to determine the neuroprotective effect of polysaccharides isolated from Angelica sinensis. In a preliminary experiment, Angelica sinensis polysaccharides not only protected PC12 neuronal cells from H 2 O 2-induced cytotoxicity, but also reduced apoptosis and intracellular reactive oxygen species levels, and increased the mitochondrial membrane potential induced by H 2 O 2 treatment. In a rat model of local cerebral ischemia, we further demonstrated that Angelica sinensis polysaccharides enhanced the antioxidant activity in cerebral cortical neurons, increased the number of microvessels, and improved blood flow after ischemia. Our findings highlight the protective role of polysaccharides isolated from Angelica sinensis against nerve cell injury and impairment caused by oxidative stress. | Tao Lei Haifeng Li Zhen Fang Junbin Lin Shanshan Wang Lingyun Xiao Fan Yang Xin Liu Junjian Zhang Zebo Huang Weijing Liao | 2014 | Neural Regeneration Research2014，9，3： | 17 |
| 3 | Comprehensive Management of Daily Living Activities,behavioral and Psychological Symptoms,and Cognitive Function in Patients with Alzheimer's Disease:A Chinese Consensus on Alzheimer's Disease显示文摘Alzheimer's disease(AD)is the most common cognitive disorder in the elderly.Its main clinical manifestations are cognitive decline(C),behavioral and psychological symptoms(B),and a decline in the activities of daily living(A),also known as ABC symptoms.Early identification and evaluation of ABC symptoms are helpful for establishing the accurate diagnosis,comprehensive treatment,and prognosis of AD.To guide Chinese clinical practice for optimization of the comprehensive management of AD,in 2018,The Academy of Cognitive Disorder of China gathered 22 neurologists and gerontologists in China to build a consensus on the comprehensive management of AD.Based on a review of the evidence,the consensus summarizes the pathogenesis,pathological changes,clinical manifestations,evaluation,diagnosis,drug and non-drug treatment,and patient care for AD.Focus group discussion was used to establish a flowchart of comprehensive ABC management for AD patients.The new consensus provides a feasible AD management process for clinicians. | Jianjun Jia Jun Xu Jun Liu Yongjun Wang Yanjiang Wang Yunpeng Cao Qihao Guo Qiuming Qu Cuibai Wei Wenshi Wei Junjian Zhang Enyan Yu | 2021 | Neuroscience Bulletin2021，37，7： | 10 |
| 4 | Efficient visible light photo-Fenton-like degradation of organic pollutants using in situ surface-modified BiFeO_3 as a catalyst显示文摘The visible light photo-Fenton-like catalytic performance of BiFeO3 nanoparticles was investigated using Methyl Violet(MV),Rhodamine B(RhB) and phenol as probes.Under optimum conditions,the pseudo first-order rate constant(k) was determined to be 2.21 × 102,5.56 × 102 and 2.01 × 102 min 1 for the degradation of MV(30 μmol/L),RhB(10 μmol/L) and phenol(3 mmol/L),respectively,in the BiFeO3-H2O2-visible light(Vis) system.The introduction of visible light irradiation increased the k values of MV,RhB and phenol degradation 3.47,1.95 and 2.07 times in comparison with those in dark.Generally,the k values in the BiFeO3H2O2-Vis system were accelerated by increasing BiFeO3 load and H2O2 concentration,but decreased with increasing initial pollutant concentration.To further enhance the degradation of pollutants at high concentrations,BiFeO3 was modified with the addition of surface modifiers.The addition of ethylenediamineteraacetic acid(EDTA,0.4 mmol/L) increased the k value of MV degradation(60 μmol/L) from 1.01 × 102 min-1 in the BiFeO 3-H2O2-Vis system to 1.30 min-1 in the EDTA-BiFeO3-H2O2-Vis system by a factor of 128.This suggests that in situ surface modification can enable BiFeO3 nano-particles to be a promising visible light photo-Fenton-like catalyst for the degradation of organic pollutants. | Junjian An Lihua Zhu Yingying Zhang Heqing Tang | 2013 | Journal of Environmental Sciences2013，25，6： | 10 |
| 5 | Chrysophanol protects against doxorubicin-induced cardiotoxicity by suppressing cellular PARylation显示文摘The clinical application of doxorubicin(DOX) in cancer chemotherapy is limited by its lifethreatening cardiotoxic effects. Chrysophanol(CHR), an anthraquinone compound isolated from the rhizome of Rheum palmatum L., is considered to play a broad role in a variety of biological processes.However, the effects of CHR’s cardioprotection in DOX-induced cardiomyopathy is poorly understood. In this study, we found that the cardiac apoptosis, mitochondrial injury and cellular PARylation levels were significantly increased in H9 C2 cells treated by Dox, while these effects were suppressed by CHR. Similar results were observed when PARP1 activity was suppressed by its inhibitors 3-aminobenzamide(3 AB)and ABT888. Ectopic expression of PARP1 effectively blocked this CHR’s cardioprotection against DOX-induced cardiomyocyte injury in H9 C2 cells. Furthermore, pre-administration with both CHR and 3 AB relieved DOX-induced cardiac apoptosis, mitochondrial impairment and heart dysfunction in Sprague–Dawley rat model. These results revealed that CHR protects against DOX-induced cardiotoxicity by suppressing cellular PARylation and provided critical evidence that PARylation may be a novel target for DOX-induced cardiomyopathy. | Jing Lu Jingyan Li Yuehuai Hu Zhen Guo Duanping Sun Panxia Wang Kaiteng Guo Dayue Darrel Duan Si Gao Jianmin Jiang Junjian Wang Peiqing Liu | 2019 | Acta Pharmaceutica Sinica B2019，9，4： | 8 |
| 6 | Real-time PCR diagnosis of Schistosoma japonicum in low transmission areas of China显示文摘Background:Schistosomiasis in the People’s Republic of China(PRC)can be traced back to antiquity.In the past 60 years,the Chinese government has made great efforts to control this persistent disease with elimination slated by 2020 through the implementation of a comprehensive control strategy.This strategy aims to reduce the role of bovines and humans as sources of infection as a pre-requisite for elimination through transmission interruption.The goal of elimination will be achievable only by the implementation of a sustainable surveillance and control system,with sensitive diagnosis a key feature so that the true disease burden is not underestimated.Currently used diagnostics lack the necessary sensitivity to accurately determine the prevalence of Schistosoma japonicum infection in areas with low infection intensities.It is of critical importance to find and treat people and to identify animals with low-level infections if the National Control Programme for China is to achieve schistosomiasis elimination.Methods:We evaluated a real-time polymerase chain reaction(qPCR)assay using 633 human stool samples collected from five villages in Hunan,Anhui,Hubei,and Jiangxi provinces,and 182 bovine(70 cattle and 112 buffalo)stool samples obtained from four villages in Hunan,Anhui,and Jiangxi provinces in the PRC.All stool samples were subjected to the miracidium hatching test(MHT,a diagnostic procedure used in the National Schistosomiasis Control Programme)and the qPCR assay.Samples positive by MHT were subjected to either the Kato-Katz technique for humans,or the formalin-ethyl acetate sedimentation-digestion(FEA-SD)procedure for bovines,to determine infection intensities.Results:The qPCR assay exhibited a high level of sensitivity in the detection of S.japonicum infections.With both the human and bovine samples,a significantly higher prevalence was determined using the qPCR assay(11.06%humans,24.73%bovines)than with the MHT(0.93%humans,7.69%bovines).The animal contamination index(calculated using data obtained with the qPCR technique)for all positive bovines was 27618000 eggs per day,indicating a considerable amount of environmental egg contamination that would be underestimated using less sensitive diagnostic procedures.Conclusions:The qPCR assay we have evaluated will be applicable as a future field diagnostic and surveillance tool in low-transmission zones where schistosomiasis elimination is targeted and for monitoring post-intervention areas to verify that elimination has been maintained. | Pei He Catherine A.Gordon Gail M.Williams Yuesheng Li Yuanyuan Wang Junjian Hu Darren J.Gray Allen G.Ross Donald Harn Donald P.McManus | 2018 | Infectious Diseases of Poverty2018，7，1： | 7 |
| 7 | Soil Polycyclic Aromatic Hydrocarbons Across Urban Density Zones in Shenzhen, China: Occurrences, Source Apportionments,and Spatial Risk Assessment显示文摘Urbanization may cause increased exposure levels to polycyclic aromatic hydrocarbons(PAHs) and associated health risks for over half of the world's population living in cities,but little evidence has shown a direct spatial relationship between urbanization and soil PAH pollution.Based on the monitored PAH concentrations in 188 topsoil(0-5 cm) samples in Shenzhen,the most rapidly developing city in China,in recent decades,we applied geographical demarcation to determine the occurrences,source apportionments,and spatial ecological risks of soil PAHs across five zones of varying urban densities.Mean concentrations of the 16 US Environmental Protection Agency(EPA) priority PAHs(Σ_(16)PAHs) and the 7 carcinogenic PAHs(Σ_7CarPAHs) both followed the order:Zone D(60%-80%constructive land density(CLD)) > Zone E(80%-100%CLD) > Zone C(40%-60%CLD) > Zone B(20%-40%CLD) > Zone A(0%-20%CLD),suggesting that the highest PAH levels occurred in the suburban-urban center transitional zone(Zone D) rather than the urban center zone(Zone E) in Shenzhen.There were significant correlations of Σ_(16)PAHs to TOC and sampling altitude across all samples but not within highly-urbanized regions(Zones D and E),implying a considerable disturbance of urbanization to the soil PAH pool.Source apportionments suggested that soil PAHs of all zones were mainly derived from fossil fuel combustion,with Zone E showing the highest contribution from oil sources among different zones.Spatial ecological risk analysis showed that the contaminated area(467 km^2;23.9%of total area;toxic equivalency quotients > 33 ng g^(-1)) had a higher contribution from the highly-urbanized regions(Zones D and E) than the uncontaminated area(42.3%vs.18.1%).Overall,our study highlighted a strong spatial relationship between urbanization and soil PAH pollution. | ZHANG Di WANG Junjian ZENG Hui | 2016 | Pedosphere2016，26，5： | 7 |
| 8 | Epithelial-mesenchymal transition and cancermetastasis显示文摘上皮间充质的转变(EMT ) 开始在哺乳动物,以及维持重要身体的稳定性的一个基本生物事件的 embryogenesis 期间被看作生理的现象。最近的研究显示 EMT 在各种各样的肿瘤前进,上皮的癌症通过入侵并且转移起一个关键作用。房间特征在 EMT,房间在失去房间房间和房间矩阵相互作用和顶端的极性期间被改变,重新组织他们的细胞骨架,并且变得孤立,对 anoikis 能动,以及抵抗,然后成为塑造锭子的间充质的房间。这评论在关于 EMT 学习房间形态发生,制造者和分子的机制规定上放强调,讨论在 EMT 和癌症发展和转移之间的关系。 | Junjian Deng Ximing Xu | 2011 | The Chinese-German Journal of Clinical Oncology2011，10，3： | 7 |
| 9 | Assessing site-safeguard effectiveness and habitat preferences of Bar-headed Geese (Anser indicus) at their stopover sites within the Qinghai-Tibet Plateau using GPS/ GSM telemetry显示文摘Background:The Bar-headed Goose(Anser indicus)breeds across the high plains and plateau of Central Asia and winters in the Qinghai-Tibet Plateau(QTP),the Yunnan-Guizhou Plateau and the Indian sub-continent.Of the two recognized discrete flyways of the Bar-headed Goose,the Eastern Tibetan Flyway(ETF)is the larger,comprising at least six migration routes.However,we remain ignorant about their migratory connectivity,habitat use and effectiveness of site-safeguard mechanisms set in place for the species.Methods:We tracked 30 ETF Bar-headed Geese from Chinese and Mongolian breeding areas to their wintering grounds using GPS/GSM transmitters,to determine their migration routes and stopover staging patterns within the QTP,overlaying these upon GIS layers of protected area status and habitat type,to model their habitat selection.Results:In total,14 tagged Bar-headed Geese provided information on their entire autumn migration and 4 geese on their entire spring migration.Qinghai Lake marked birds overwintered in the QTP(n=2),geese tagged in Mongolia wintered either in the QTP(n=3)or in India/Bangladesh(n=9),representing three of the migration routes within the ETF.In total,tagged birds staged at 79 different stopover sites within QTP in autumn and 23 in spring,of which 65%(autumn)and 59%(spring)of all fixes fell within the boundaries of either National Nature Reserves(NNRs)or Important Birds Areas(IBAs)in the QTP.Bar-headed Geese predominantly occurred on four land-cover types:grassland(mostly by day),water bodies(at night),wetlands and bare substrates(salt flats,dry lake/river substrates and plough)with little change in proportion.Generalized linear mixed models comparing presence with pseudo-absence data suggested geese strongly selected for wetlands as staging habitat,avoiding bare substrates in spring.Conclusions:Based on our limited observations of these tagged geese,this study is the first to show that the current designated National Nature Reserves in place in the staging areas within the QTP appear adequate to protect this increasing population.In addition,Hala Lake in Qinghai Province and adjacent areas used as initial QTP staging during autumn migration(currently outside of designated as NNRs/IBAs)are recommended for protection,based on their use by tagged birds from this study.Habitat modelling confirmed the importance of natural wetlands as feeding areas and safe areas of open water as roosting places. | Junjian Zhang Yanbo Xie Laixing Li Nyambayar Batbayar Xueqin Deng Iderbat Damba Fanjuan Meng Lei Cao Anthony David Fox | 2020 | Avian Research2020，11，4： | 5 |
| 10 | Removing lignin model pollutants with BiFeO_3–g-C_3N_4 compound as an efficient visible-light-heterogeneous Fenton-like catalyst显示文摘BiFeO_3–g-C_3N_4 nanoscaled composite was prepared with a hydrothermal method and evaluated as a highly efficient photo-Fenton like catalyst under visible light irradiation. The BiFeO_3–g-C_3N_4 composite exhibited much stronger adsorption ability to lignin model pollutant(guaiacol) than that of BiFeO_3, which may be due to the higher specific surface area(BiFeO_3–g-C_3N_4: 35.59 m^2/g > BiFeO_3: 7.42 m^2/g) and the adsorption form of π–π stack between g-C_3N_4 and guaiacol. The composite exhibited excellent visible light-Fenton like catalysis activity, being influenced by the solution pH value and the proportions of BiFeO_3 and g-C_3N_4 nanosheets. Under optimal conditions with visible light irradiation, the BiFeO_3–g-C_3N_4 composite yielded fast degradation of guaiacol with an apparent rate constant of 0.0452 min^(-1), which were 5.21 and 6.80 folds of that achieved by using BiFeO_3 and the mixture of BiFeO_3 and g-C_3N_4 nanosheets, respectively. The significantly enhanced visible light-Fenton like catalytic properties of the BiFeO_3–g-C_3N_4 composite in comparison with that of BiFeO_3 was attributed to a large surface area, much increased adsorption capacity and the semiconductor coupling effect between BiFeO_3 and g-C_3N_4 in the composite. | Junjian An Guangyan Zhang Rongfeng Zheng Peng Wang | 2016 | Journal of Environmental Sciences2016，28，10： | 5 |
| 11 | Silica shell-assisted synthetic route for mono-disperse persistent nanophosphors with enhanced in vivo recharged near-infrared persistent luminescence显示文摘在红外线附近(NIR ) 坚持光的 nanoparticles 作为在 vivo 成像是有希望的为的没有背景的对比代理人的一个新班出现了。下一个关键障碍是为综合建立一个柔韧、可控制的方法有高光亮度和长坚持的持续时间的 monodisperse nanoparticles。此处,我们报导包含 SiO 2 壳的 coating/etching 获得小 NIR 高度坚持的光 ZnGa 2 O 4:Cr3+,Sn4+(ZGOCS ) nanoparticles。优化 ZGOCS nanoparticles 有 ~ 的优秀尺寸分布没有任何凝块和 NIR 的 15 nm 被 13.5 的一个因素提高的坚持的光,由于在在退火以后阻止 nanoparticle 凝块的 SiO 2 壳的关键角色。ZGOCS nanoparticles 有比以前报导的 ZnGa 2 是的 O 4:Cr3+(ZGC-1 ) nanoparticles 一根 NIR 坚持光的探针为在 vivo bioimaging。而且,从 ZGOCS nanoparticles 的坚持光的信号能被一根白 lightemitting 二极管反复与外部刺激在 situ 再装;因此, nanoparticles 对合适在 vivo 成像应用长期。我们的学习为与好 biocompatibility 制作新奇高效的光 nanoparticles 建议改进策略。 | Rui Zou Junjian Huang Junpeng Shi Lin Huang Xuejie Zhang Ka-Leung Wong Hongwu Zhang Dayong Jin Jing Wang Qiang Su | 2017 | Nano Research2017，10，6： | 5 |
| 12 | Transplantation of human umbilical cord blood mesenchymal stem cells to treat a rat model of traumatic brain injury显示文摘In the present study, human umbilical cord blood mesenchymal stem cells were injected into a rat model of traumatic brain injury via the tail vein. Results showed that 5-bromodeoxyuridine-labeled cells aggregated around the injury site, surviving up to 4 weeks post-transplantation. In addition, transplantation-related death did not occur, and neurological functions significantly improved. Histological detection revealed attenuated pathological injury in rat brain tissues following human umbilical cord blood mesenchymal stem cell transplantation. In addition, the number of apoptotic cells decreased. Immunohistochemistry and in situ hybridization showed increased expression of brain-derived neurotrophic factor, nerve growth factor, basic fibroblast growth factor, and vascular endothelial growth factor, along with increased microvessel density in surrounding areas of brain injury. Results demonstrated migration of transplanted human umbilical cord blood mesenchymal stem cells into the lesioned boundary zone of rats, as well as increased angiogenesis and expression of related neurotrophic factors in the lesioned boundary zone. | Junjian Zhao Naiyao Chen Na Shen Hui Zhao Dali Wang Jun Shi Yang Wang Xiufeng Cui Zhenyu Yan Hui Xue | 2012 | Neural Regeneration Research2012，7，10： | 5 |
| 13 | SUMMATION OF ABSOLUTE VALUE TEST FOR MULTIPLE OUTCOME COMPARISON WITH MODERATE EFFECT显示文摘In biomedical research,in order to evaluate the effect of a drug,investigators often need to compare the differences between one treatment group and another one by using multiple outcomes.The rank-sum tests can handle the case where the outcome differences between two groups are in the same direction.If they are not,MAX can handle it and is very useful when one/some of the differences is/are relatively larger than the others.When the individual outcome difference between two groups is moderate,a new method,summation of the absolute value of rank-based test for each outcome,is proposed in this work.Power comparison with the existing methods based on simulation studies and a real example show that the proposed test is a robust test,and works well when the difference for each outcome is moderate.The authors also derive some theoretical results for comparing the power between MAX and the the proposed method. | LI Zhengbang CAO Fan ZHANG Junjian LI Qizhai | 2013 | Journal of Systems Science & Complexity2013，26，3： | 4 |
| 14 | Cancer Immunotherapy Targeting the Telomerase Reverse Transcriptase显示文摘人的 telomerase 颠倒 transcriptase (hTERT ) 在超过 85% 肿瘤房间被表示,但是通常没在正常房间被发现,它作为理想的肿瘤伙伴抗原(TAA ) 做 hTERT 开发没有在人的癌症免疫疗法损害正常纸巾,明确地破坏癌症的潜在的疫苗。这被考察 hTERT 或它的肽和早临床的 trials using 的 immunogenicity 上的研究的基本进展在最后十年的 hTERT 疫苗途径。 | Longfei Huo Janice WS Tang Junjian Huang Peitang Huang Cuifen Huang Hsiang-fu Kung Marie C. Lin | 2006 | Cellular & Molecular Immunology2006，3，1： | 4 |
| 15 | Whole-cell matrix-assisted laser desorption/ionization time-of-flight mass spectrometry for rapid identification of bacteria cultured in liquid media显示文摘Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) has been used for many years to rapidly identify whole bacteria. However, no consistent methodology exists for the rapid identification of bacteria cultured in liquid media. Thus, in this study we explored the use of MALDI-TOF MS analysis for rapid identification of cells cultured in liquid media. We determined that 2,5-dihydroxybenzoic acid (50 mg mL-1, 50% acetonitrile, 0.1% trifluoroacetic acid) was the best matrix solution for MALDI-TOF MS for this type of study. Moreover, the tested strains were successfully differentiated by principal component analysis, and the main characteristics of the mass peaks for each species were found in mixed culture samples. In addition, we found that the minimum number of cells for detection was 1.8×103. In conclusion, our findings suggest that MS-based techniques can be developed as an auxiliary method for rapidly and accurately identifying bacteria cultured in liquid media. | ZHOU Na WANG Na XU Bin WANG Jie FANG JunJian DONG FangTing HE Kun YANG XiaoHong | 2011 | Science China(Life Sciences)2011，54，1： | 4 |
| 16 | A high-resolution small animal SPECT system developed at Tsinghua显示文摘An SPECT system dedicated to small animal imaging shall be of a millimeter spatial resolution or even better.This study was aimed at achieving 0.5-mm spatial resolution for a small animal SPECT system at low cost.It was developed from a single-head clinical SPECT scanner,with a seven-pinhole collimator and a four-degree-offreedom motion control stage.Several key techniques were developed,including high-resolution image reconstruction algorithm,high accuracy geometrical calibration method,and optimized system matrix derivation scheme.The system matrix was derived from Monte-Carlo simulation and de-noised by fitting each point spread function to a two dimensional Gaussian function.Experiments of point source and ultra micro hot rod phantom were conducted.With a spatial resolution of 0.5-0.6 mm,this system provides a practical way for low-cost high-resolution animal imaging on a clinic SPECT system. | DAI Tiantian MATianyu LIU Hui CUI Junjian WEI Qingyang LIU Yaqiang WANG Shi | 2011 | Nuclear Science and Techniques2011，22，6： | 3 |
| 17 | Data-driven Power Flow Method Based on Exact Linear Regression Equations显示文摘Power flow(PF)is one of the most important calculations in power systems.The widely-used PF methods are the Newton-Raphson PF(NRPF)method and the fast-decoupled PF(FDPF)method.In smart grids,power generations and loads become intermittent and much more uncertain,and the topology also changes more frequently,which may result in significant state shifts and further make NRPF or FDPF difficult to converge.To address this problem,we propose a data-driven PF(DDPF)method based on historical/simulated data that includes an offline learning stage and an online computing stage.In the offline learning stage,a learning model is constructed based on the proposed exact linear regression equations,and then the proposed learning model is solved by the ridge regression(RR)method to suppress the effect of data collinearity.In online computing stage,the nonlinear iterative calculation is not needed.Simulation results demonstrate that the proposed DDPF method has no convergence problem and has much higher calculation efficiency than NRPF or FDPF while ensuring similar calculation accuracy. | Yanbo Chen Chao Wu Junjian Qi | 2022 | Journal of Modern Power Systems and Clean Energy2022，10，3： | 2 |
| 18 | Resilience Analysis and Cascading Failure Modeling of Power Systems Under Extreme Temperatures显示文摘In this paper, we propose an AC power flow based cascading failure model that explicitly considers external weather conditions, extreme temperatures in particular, and evaluates the impact of extreme temperature on the initiation and propagation of cascading blackouts. Based on this model, resilience analysis of the power system is performed with extreme temperatures. Specifically, the changes of load and dynamic line rating are modeled due to temperature disturbance. The probabilities for transmission line and generator outages are evaluated, and the timing for each type of events is calculated to decide the actual event sequence. It should be emphasized that the correlated events, in the advent of external temperature changes, could contribute to voltage instability. Besides, we model undervoltage load shedding and operator re-dispatch as control strategies for preventing the propagation of cascading failures. The effectiveness of the proposed model is verified by simulation results on the RTS-96 3-area system. It is found that temperature disturbances can lead to correlated load change and line/generator tripping, which will greatly increase the risk of cascading and voltage instability. Critical temperature change, critical area with temperature disturbance, the identification of most vulnerable buses, and the comparison of different control strategies are also investigated. | Seyyed Rashid Khazeiynasab Junjian Qi | 2021 | Journal of Modern Power Systems and Clean Energy2021，9，6： | 2 |
| 19 | Mineralization Ages of the Jiapigou Gold Deposits,Jilin显示文摘The Jiapigou gold deposits are typical vein type deposits associated withArchaean greenstone belts in China. According to the crosscutting relationships between dykesand auriferous veins, single hydrothermal zircon U-Pb dating and quartz K-Ar,40Ar-39Ar andRb-Sr datings, the main mineralization stage of the Jiapigou deposit has been determined to be2469-2475 Ma, while mineralization superimposition on the gold deposit occurred in1800-2000 Ma and 130-272 Ma. They form a mineralization framework of one oldermetallogenic epoch (Late Archaean-Early Proterozoic) and one younger metallogenic epoch(Mesozoic) of gold deposits in Archaean greenstone belts in China. | Li Junjian Shen Baofeng Mao Debao Li Shuangbao Zhou Huifang and Cheng Yuming Tianjin Institute of Geology and Mineral Resources,Chinese Academy of Geological Sciences, Tianjin Nonferrous Metal Geological Exploration Bureau, Changchun, Jilin | 1997 | Acta Geologica Sinica(English Edition)1997，71，2： | 2 |
| 20 | An improved multi-objective optimization algorithm for solving flexible job shop scheduling problem with variable batches显示文摘In order to solve the flexible job shop scheduling problem with variable batches,we propose an improved multiobjective optimization algorithm,which combines the idea of inverse scheduling.First,a flexible job shop problem with the variable batches scheduling model is formulated.Second,we propose a batch optimization algorithm with inverse scheduling in which the batch size is adjusted by the dynamic feedback batch adjusting method.Moreover,in order to increase the diversity of the population,two methods are developed.One is the threshold to control the neighborhood updating,and the other is the dynamic clustering algorithm to update the population.Finally,a group of experiments are carried out.The results show that the improved multi-objective optimization algorithm can ensure the diversity of Pareto solutions effectively,and has effective performance in solving the flexible job shop scheduling problem with variable batches. | WU Xiuli PENG Junjian XIE Zirun ZHAO Ning WU Shaomin | 2021 | Journal of Systems Engineering and Electronics2021，32，2： | 2 |
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