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| 1 | Prostate cancer in Asia:A collaborative report显示文摘The incidence of prostate cancer(PCa)within Asian population used to be much lower than in the Western population;however,in recent years the incidence and mortality rate of PCa in some Asian countries have grown rapidly.This collaborative report summarized the latest epidemiology information,risk factors,and racial differences in PCa diagnosis,current status and new trends in surgery management and novel agents for castration-resistant prostate cancer.We believe such information would be helpful in clinical decision making for urologists and oncologists,health-care ministries and medical researchers. | Rui Chen Shancheng Ren 无 Ming Kwong Yiu Ng Chi Fai Wai Sam Cheng Lap Hong Ian Seiji Naito Tadashi Matsuda Elijah Kehinde Ali Kural Jason Yichun Chiu Rainy Umbas Qiang Wei Xiaolei Shi Liqun Zhou Jian Huang Yiran Huang Liping Xie Lulin Ma Changjun Yin Danfeng Xu Kexin Xu Zhangqun Ye Chunxiao Liu Dingwei Ye Xin Gao Qiang Fu Jianquan Hou Jianlin Yuan Dalin He Tiejun Pan Qiang Ding Fengshuo Jin Benkang Shi Gongxian Wang Xiuheng Liu Dongwen Wang Zhoujun Shen Xiangbo Kong Wanhai Xu Yaoliang Deng Haibo Xia Alexa NCohen Xu Gao Chuanliang Xu Yinghao Sun | 2014 | Asian Journal of Urology2014,1,1: | 13 |
| 2 | Online scheduling of image satellites based on neural networks and deep reinforcement learning显示文摘In the ‘‘Internet Plus' era, space-based information services require effective and fast image satellite scheduling. Most existing studies consider image satellite scheduling to be an optimization problem to solve with searching algorithms in a batch-wise manner. No real-time speed method for satellite scheduling exists. In this paper, with the idea of building a real-time speed method, satellite scheduling is remodeled based on a Dynamic and Stochastic Knapsack Problem(DSKP), and the objective is to maximize the total expected profit. No existing algorithm could be able to solve this novel scheduling problem properly. With inspiration from the recent achievements in Deep Reinforcement Learning(DRL) in video games, AlphaGo and dynamic controlling,a novel DRL-based method is applied to training a neural network to schedule tasks. The numerical results show that the method proposed in this paper can achieve relatively good performance with real-time speed and immediate respond style. | Haijiao WANG Zhen YANG Wugen ZHOU Dalin LI | 2019 | Chinese Journal of Aeronautics2019,32,4: | 12 |
| 3 | Nonlinear flutter of a two-dimension thin plate subjected to aerodynamic heating by differential quadrature method显示文摘在超声的气流的一个二尺寸的薄盘子的非线性的 aerothermoelasticity 的问题被检验。von Karman 的大偏转理论的紧张排水量关系被采用描述几何非线性,空气动力学的活塞理论被采用说明空气动力学的力量的效果。一个新方法,微分照方法(DQM ) ,被用来获得运动方程的分离形式。然后, Runge Kutta 数字方法被使用解决非线性的方程,板的非线性的反应数字地被获得。结果显示由于空气动力学的加热,板稳定性被堕落,并且在系统参数的一个特定的区域,混乱运动发生,并且到混乱运动的线路经由双时期的分叉。 | Dalin Chen Yiren Yang Chenguang Fan | 2008 | Acta Mechanica Sinica2008,24,1: | 10 |
| 4 | Galectin-3 gene silencing inhibits migration and invasion of human tongue cancer cells in vitro via downregulating β-catenin显示文摘 | Dong ZHANG Zheng-gang CHEN Shao-hua LIU Zuo-qing DONG Martin DALIN Shi-san BAO Ying-wei HU Feng-cai WEI | 2013 | Acta Pharmacologica Sinica2013,34,1: | 10 |
| 5 | Design and optimization of variable thrust hybrid rocket motors for sounding rockets显示文摘Besides safety and low-cost,the start/shutdown/restarting and throttling ability are the other two significant advantages of hy-brid rocket motors(HRMs) compared with liquid and solid ones.In this study,a two-stage variable thrust and non-toxic 98%HP/HTPB hybrid rocket motor(VTHRM) is designed and applied in a sounding rocket,and the design parameters of the motor are analyzed and optimized.A computational program is developed to design the motor system structure,to predict the interior ballistics and the ballistic trajectory.A star grain and a wheel grain are compared.The design of experiment(DOE),variance analysis and the main effect analysis are employed to investigate the influence of the main design parameters on mo-tor performance.The multidiscipline feasible(MDF) approach is applied to establish the optimization procedure after analyz-ing the system design structure matrix.A modified differential evolution algorithm is employed to maximize the load mass.The results indicate that the wheel grain could obtain a larger load mass and a lower length to diameter ratio,and that throttling markedly meliorates the motor and rocket performance.The conclusions drawn from the analysis and optimization could pro-vide instructive guide and theoretical basis for engineering designs. | RAO DaLin CAI GuoBiao ZHU Hao TIAN Hui | 2012 | Science China(Technological Sciences)2012,55,1: | 9 |
| 6 | Percent free prostate-specific antigen for prostate cancer diagnosis in Chinese men with a PSA of 4.0-10.0 ng/mL:Results from the Chinese Prostate Cancer Consortium显示文摘Objective:To test the diagnostic performance of percent free prostate-specific antigen(%fPSA)in predicting any prostate cancer(PCa)and high-grade prostate cancer(HGPCa)in a retrospective multi-center biopsy cohort with a PSA level of 4.0e10.0 ng/mL in China.Methods:Consecutive patients with a PSA of 4.0-10.0 ng/mL who underwent transrectal ultrasound-guided biopsy were enrolled at 16 Chinese medical centers from January 1st,2010 to December 31st,2013.Total and free serum PSA determinations were performed using three types of electro-chemiluminescence immunoassays recalibrated to the World Health Organization(WHO)standard.The diagnostic accuracy of PSA,%fPSA,and %fPSA in combination with PSA(%fPSA t PSA)was determined using the area under the receiver operating characteristic(ROC)curve(AUC).Results:A total of 2310 consecutive men with PSA levels between 4.0 and 10.0 ng/mL were included,and the detection rate of PCa was 25.1%.The AUC of%fPSA and %fPSA t PSA in predicting any PCa was superior to PSA alone in men aged≥60 years(0.623 vs.0.534,p<0.0001)but not in men aged 40e59 years(0.517 vs.0.518,p=0.939).Similar result was yield in predicting HGPCa.Conclusion:In a clinical setting of Chinese men with 4.0e10.0 ng/mL PSA undergoing initial prostate biopsy,adding %fPSA to PSA can moderately improve the diagnostic accuracy for any PCa and HGPCa compared with PSA alone in patients≥60 but not in patients aged 40-59 years. | Rui Chen Liping Xie Xiaobing Cai Yiran Huang Liqun Zhou Lulin Ma Xu Gao Chuanliang Xu Shancheng Ren Pengfei Shao Danfeng Xu Kexin Xu Zhangqun Ye Chunxiao Liu Dingwei Ye Li Lu Qiang Fu Jianquan Hou Jianlin Yuan Dalin He Tie Zhou Fubo Wang Biming He Yinghao Sun | 2015 | Asian Journal of Urology2015,2,2: | 8 |
| 7 | A case-control study about the association between vascular endothelial growth inhibitor gene polymorphisms and breast cancer risk in female patients in Northeast China显示文摘Objective: The inhibition of the neovascularization in tumors is a potential therapeutic target of cancer. Vascular endothelial growth inhibitor(VEGI) is a member of the TNF superfamily which has the ability to suppress the formation of new vessels in tumors. In order to study the association between VEGI gene polymorphisms and breast cancer risk, a case-control study was conducted in Chinese Han women in Northeast China.Methods: Our study involved 708 female breast cancer patients and 685 healthy volunteers. Four SNPs of VEGI gene were analyzed through the polymerase chain reaction-restriction fragment length polymorphism(PCR-RFLP) method. The association between VEGI gene polymorphisms and breast cancer risk was analyzed in our study. The relation between VEGI gene variants and clinical features of breast cancer including lymph node(LN) metastasis, estrogen receptor(ER), progestrogen receptor(PR), tumor protein 53(p53), human epidermal growth factor receptor 2(Her-2) and triple negative(ER-/PR-/Her-2-) status was analyzed as well.Results: We found that the CT genotype and T allele of rs6478106 were more frequent in patients than in controls. There was also a statistical difference in the distribution of C_(rs6478106)G_(rs4263839) haplotype between patients and controls. In addition, SNP rs6478106 and rs4979462 were related with the Her-2 status.Conclusions: Our results suggest that VEGI gene variants may be related to the breast cancer risk and the clinical features of breast cancer in Chinese Han women in Northeast China. | Shaoli Han Lei Liu Fengyan Xu Shuang Chen Weiguang Yuan Zhenkun Fu Dalin Li Dianjun Li | 2016 | Chinese Journal of Cancer Research2016,28,4: | 7 |
| 8 | Silencing RhoA inhibits migration and invasion through Wnt/β-catenin pathway and growth through cell cycle regulation in human tongue cancer显示文摘地岬相当或相同的事物基因家庭成员 A (RhoA ) 作为肿瘤的一个批评管理者被识别了好攻击的行为。在 thisstudy,我们在位于有鳞的细胞 carcinomaof 舌头(TSCC ) 的生长,移植,和侵略下面的机制估计了 RhoA 的角色。TSCC 房间线 SCC-4 和 CAL27 击倒的稳定的 RhoA 用 Lentiviral transfection 被完成。房间移植,侵略,和房间增长上的 RhoA 弄空的 Theeffects 是坚定的。TSCC 房间线上的可能的位于决定 Galectin-3 (Gal-3 ) 的表示下面 mechanismof RhoA 弄空被也评估,在 vivo 的 -catenin, andmatrix metalloproteinase-9 (MMP-9 ) 。同时, TSCC 生长的内在的机制被 cyclin D1/2 的分析学习, p21 CIP1/WAF1 , 和 p27 Kip1 蛋白质层次。Immunohistochemical 评价被执行进一步证明 Gal-3 和 -catenin expression.We 的改变发现了那,在与在舌头的人的 TSCC 房间注射的老鼠, RhoA 层次与在正常纸巾的那些相比在主要肿瘤和 metastasizedlymph 节点是更高的。RhoA 的 Silencing 显著地减少了肿瘤生长, Gal-3 的 decreasedthe 层次, -catenin, MMP-9,和 cyclin D1/2,并且增加了 p21 CIP1/WAF1 和 p27 Kip1 。在 vitro, RhoA 击倒也导致了房间移植,侵略,和增长的抑制。我们的数据建议 RhoA 由通过分别地通过房间周期规定表明小径 andcell 增长的 Wnt/-catenin 调整房间移植和侵略在 TSCC 前进起 asignificant 作用。RhoA 可能是 TSCC 的一个新奇治疗学的目标。 | Guoxin Yan Ronghai Zou Zhenggang Chen Bing Fan Zhaoyan Wang Ying Wang Xiaonan Yin Dong Zhang Lei Tong Fang Yang Weina Jiang Wensheng Fu Jiwei Zheng Martin O. Bergo Martin Dalin Jiawei Zheng Shulan Chen Jianhua Zhou | 2014 | Acta Biochimica et Biophysica Sinica2014,46,8: | 7 |
| 9 | Overactive bladder symptom score to evaluate efficacy of solifenacin for the treatment of overactive bladder symptoms显示文摘 | Liu Ming Wang Jianye Yang Yong An Ruihua Wen Jianguo Guan Zhichen Zheng Shaobin Wang Dongwen Song Bo Liao Limin Guo Hongqian Xiao Jiaquan Sun Yinghao Shen Zhoujun Kong Chuize He Dalin Huang Yiran Wang Xiaofeng Zhang Xu Li Hanzhong Huang Jian Zhao Xiaokun Zeng Puqing Song Xishuang Ye Zhangqun | 2014 | Chinese Medical Journal2014,,2: | 7 |
| 10 | Nutrient fluxes induced by disturbance in Meiliang Bay of Lake Taihu显示文摘A wave flume experiment was conducted to study nutrient fluxes at water-sediment interface of Meiliang Bay under different hydrodynamic conditions. The results reveal that hydrodynamics has remarkable effects on nutrient fluxes in this area. With a bottom wave stress of 0.019 N m-2 (equivalent to disturbance caused by wind SE 5-7 m s-1 at the sediment sample site of Meiliang Bay), the fluxes of TN, TDN and NH4+-N were separately 1.92× 10-3, -1.81 × 10-4 and 5.28× 10-4 mg m-2 s-1(positive for upward and negative for downward), but for TP, TDP and SRP, the fluxes were 5.69 × 10-4, 1.68 × 10-4 and -1.29 × 10-4 mgm-2 s-1. In order to calculate the released amount of nutrients based on these results, statistic analysis on the long-term meteorological data was conducted.The result shows that the maximum lasting time for wind SE 5-7 m s-1 in this area is about 15 h in summer. Further calculation shows that 111 t TN, 32 t NH4+-N, 34 t TP and 10 t TDP can be released into water (the sediment area was 47.45% of the whole surface area), resulting in concentration increase of 0.025, 0.007, 0.007 and 0.002 mg L-1 separately. With stronger disturbance (bottom wave stress is 0.217 N m-2 which is equivalent to disturbance caused by wind SE 10-11 m s-1 at the same site), there has been significant increase of nutrient fluxes (1.16× 10-2, 6.76×10-3, 1.14× 10-2 and 2.14× 10-3 mgm-2 s-1 for TN, DTN and NH4+-N and TP). The exceptions were TDP with flux having a decrease (measured to be 9.54× 10-5 mgm-2 s-1 ) and SRP with flux having a small increase (measured to be 5.42 × 10-5 mgm-2 s-1). The same statistic analysis on meteorological data reveal that the maximum lasting time for wind SE 10-11 m s-1 is no more than 5 h. Based on the nutrient fluxes and the wind lasting-time, similar calculations were also made suggesting that 232 t TN, 134.9 t TDN, 228 t NH4+-N, 42.7 t TP, 2.0 t TDP and 1.1 t SRP will be released from sediment at this hydrodynamic condition resulting in the concentration increases of 0.050, 0.029, 0.049, 0.009, 0.0004 and 0.0002 mg L-1. Therefore in shallow lakes, surface disturbance can lead to significant increase of nutrient concentrations although some components in water column had negative flux with weak disturbance (e.g. TDN and SRP in this experiment). In this case, sediment looks to be a source of nutrients. These nutrients deposited in sediment can be carried or released into water with sediment resuspension or changes of environmental conditions at water-sediment interface, which can have great effects on aquatic ecosystem and is also the characteristics of shallow lakes. | LUO Liancong, QIN Boqiang, ZHU Guangwei, SUN Xiaojing, HONG Dalin, GAO Yajun & XIE Rui Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008, China Nanjing Hydraulic Research Institute, Ministry of Water Resources, Nanjing 210024, China | 2006 | Science China Earth Sciences2006,49,z1: | 7 |
| 11 | Inverse Kinematics Analysis of a 7-DOF Space Manipulator for Trajectory Design显示文摘To solve the inverse kinematics problem for redundant degrees of freedom(DOFs)manipulators has been and still continues to be quite challenging in the field of robotics.Aiming at trajectory planning for a 7-DOF space manipulator system,joint rotation trajectories are obtained from predetermined motion trajectories and poses of the end effector in Cartesian space based on the proposed generalized inverse kinematics method.A minimum norm method is employed to choose the best trajectory among available trajectories.Numerical simulations with the7-DOF manipulator show that the proposed method can achieve the planned trajectory and pose under the circumstances of minimum angular velocities.Moreover,trajectory results from the proposed kinematics model and inverse kinematics method has the advantages of simple modelling,low computation cost,easy to solve and plan trajectory conveniently.The smooth and continuous joint rotation functions obtained from the proposed method are suitable for practical engineering applications. | Pengfei Xin Jili Rong Yongtai Yang Dalin Xiang | 2017 | Journal of Beijing Institute of Technology2017,26,3: | 5 |
| 12 | A study on accumulation and distribution of gas in southern Songliao Basin显示文摘A number of isolated fault sags in Late Jurassic--Early Cretaceous were developed in the early stage of southern Songliao Basin,and unified to a depression basin in the late stage.Therefore,multiple isolated lower petroliferous systems were formed with fault sags as source rocks.The source rocks of fault sags in Late Jurassic--Early Cretaceous were mainly described with gas generation as favorable source rocks,leading to the southern Songliao Basin rich in natural gas resources combined with organic gas resources in Nenjiang Formation.A number of tectonic movements in southern Songliao Basin led to the formation of abundant structural traps and complex fault systems,and controlled the distribution strata and positions of sources rocks in Late Jurassic--Early Cretaceous fault sags.The oil-gas reservoirs can be divided into two types,i.e.,primary and secondary ones.The primary oil-gas reservoirs were distributed in the fault sag strata and the bottom of overlying depression strata(lower Quan-1 Member).The oil-gas reservoir accumulation depended on the trap development situation and the distance from source rocks.The preservation conditions of oil-gas reservoirs depended on the degree of reconstruction in the late tectonism.The secondary oil-gas reservoirs were distribution in the Quantou Formation of depression strata,where oil and gas reservoir accumulation depended on three conditions,i.e.,trap development situation,deep gas sources and the fault to connect the shallow traps and deep gas sources.The southern Songliao Basin is rich in lower coal type gas,upper oil-gas and biogas resources,which are important resources in the future. | WANG Dehai KANG Haiping ZHAO Yanwei ZHAO Dalin LV Shicong WU Jianan CHEN Chunguang | 2013 | Global Geology2013,16,1: | 4 |
| 13 | Effects of folic acid on in vitro astrocytic differentiation of neural stem cells from neonatal rats显示文摘BACKGROUND:Folic acid is essential for normal functioning of the nervous system.Previous studies have focused on the effects of folic acid on astrocyte proliferation. OBJECTIVE:To explore the effects of folic acid on astrocyte differentiation of neural stem cells (NSCs) and the related mechanisms in vitro. DESIGN,TIME AND SETTING:A randomized,controlled,grouping experiment was performed in Tianjin Medical University between August 2007 and October 2008. MATERIALS:Folic acid and 5-bromo-2-deoxyuridine(BrdU) were obtained from Sigma,MO,USA. Primary antibodies[rabbit anti-rat nestin,β-tubulin-Ⅲ,glial fibrillary acidic protein,and neurogenin1 (Ngn1);mouse anti-rat BrdU andβ-actin monoclonal antibodies]were purchased from Santa Cruz Biotechnology,USA. METHODS:At 6 days of NSC proliferation from 24-hour-old neonatal rats,BrdU incorporation assay was performed.Seven days after primary culture,NSCs were induced to differentiate with medium containing 5%fetal bovine serum.Cultured NSCs were assigned to three groups:control,low-dose (liquid media with 8 mg/L folic acid),and high-dose folic acid(liquid media with 44 mg/L folic acid). MAIN OUTCOME MEASURES:At day 7 after primary culture,the cells were identified as NSCs by immunocytochemical methods.Double-label immunofluorescence technique for glial fibrillary acidic protein/BrdU detected differentiated cells 7 days after induction.Western blot was used to analyze expression of Ngn1 protein in NSCs. RESULTS:In serum-free suspension medium,neurospheres comprised a large number of Nestin-, glial fibrillary acidic protein-,β-tubulin-Ⅲ-,and BrdU-positive cells.Compared with the control group, high-dose folic acid supplementation led to an marked increase in the percentage of glial fibrillary acidic protein/BrdU-positive cells(P<0.05),and significantly decreased Ngn1 protein expression (P<0.05). CONCLUSION:Folic acid promotes astrocytic differentiation of NSCs,which might be related to downregulation of Ngn1 protein expression. | Xumei Zhang Guowei Huang Zhihong Tian Guanglei Wang Dalin Ren | 2009 | Neural Regeneration Research2009,4,8: | 4 |
| 14 | An Electrochemical Cinnamyl C—H Amination Reaction Using Carbonyl Sulfamate显示文摘An electrochemical cinnamyl C—H amination reaction in the absence of transition metal catalyst and oxidant was reported. The choice of carbonyl sulfamate as nitrogen source is the key to achieve desired chemoselectivity. A series of terminal amine derivatives are prepared using this protocol and the sulfonyl group can be removed with basic hydrolysis. The reaction is suggested to proceed via a continuous anodic oxidation, deprotonation, anodic oxidation, and intermolecular nucleophilic addition pathway, demonstrating the first example of electrochemical cinnamyl C—H amination. | Shuai Liu Jin Li Dalin Wang Feng Liu Xu Liu Yongyuan Gao Dai Jie Xu Cheng | 2019 | Chinese Journal of Chemistry2019,37,6: | 4 |
| 15 | 用于水蒸气重整生物质热解焦油的镍基催化剂的发展(英文)显示文摘Nickel catalysts are effective for the steam reforming of tar derived from biomass pyrolysis,but the improvement is needed in terms of activity,stability,suppression of coke deposition and aggregation,and regeneration.Our recent development of Ni-based catalysts for the steam reforming of tar is reviewed including the modification with CeO2(or MnO),trace Pt,and MgO.The role of additives such as CeO2,MnO,Pt,and MgO is also discussed. | Dalin LI Yoshinao NAKAGAWA Keiichi TOMISHIGE | 2012 | 催化学报2012,33,4: | 4 |
| 16 | Genetic associations with adverse events from anti-tumor necrosis factor therapy in inflammatory bowel disease patients显示文摘AIM To study the type and frequency of adverse events associated with anti-tumor necrosis factor(TNF)therapy and evaluate for any serologic and genetic associations.METHODS This study was a retrospective review of patients attending the inflammatory bowel disease(IBD) centers at Cedars-Sinai IBD Center from 2005-2016. Adverse events were identified via chart review. IBD serologies were measured by ELISA. DNA samples were genotyped at Cedars-Sinai using Illumina Infinium Immunochipv1 array per manufacturer's protocol. SNPs underwent methodological review and were evaluated using several SNP statistic parameters to ensure optimal allele-calling. Standard and rigorous QC criteria were applied to the genetic data, which was generated using immunochip. Genetic association was assessed by logistic regression after correcting for population structure.RESULTS Altogether we identified 1258 IBD subjects exposed to anti-TNF agents in whom Immunochip data were available. 269/1258 patients(21%) were found to have adverse events to an anti-TNF-α agent that required the therapy to be discontinued. 25% of women compared to 17% of men experienced an adverse event. All adverse events resolved after discontinuing the antiTNF agent. In total: n = 66(5%) infusion reactions; n = 49(4%) allergic/serum sickness reactions; n = 19(1.5%) lupus-like reactions, n = 52(4%) rash, n = 18(1.4%) infections. In Crohn's disease, Ig A ASCA(P = 0.04) and Ig G-ASCA(P = 0.02) levels were also lower in patients with any adverse events, and anti-I2 level in ulcerative colitis was significantly associated with infusion reactions(P = 0.008). The logistic regression/human annotation and network analyses performed on the Immunochip data implicated the following five signaling pathways: JAK-STAT(Janus Kinase-signal transducer and activator of transcription), measles, IBD, cytokine-cytokine receptor interaction, and toxoplasmosis for any adverse event. CONCLUSION Our study shows 1 in 5 IBD patients experience an adverse event to anti-TNF therapy with novel serologic, genetic, and pathways associations. | Daniel Lew Soon Man Yoon Xiaofei Yan Lori Robbins Talin Haritunians Zhenqiu Liu Dalin Li Dermot PB McGovern | 2017 | World Journal of Gastroenterology2017,23,40: | 4 |
| 17 | Design and Experimental Evaluation of PID Controller for Digital Electro-Pneumatic Cabin Pressure Control System显示文摘The performance of the designed digital electro-pneumatic cabin pressure control system for the cabin pressure schedule of transport aircraft is investigated.For the purpose of this study,an experimental setup consisting of a simulated hermetic cabin and altitude simulation chamber is configured for cabin pressure control system operation.A series of experimental tests are executed to evaluate the performance of the cabin pressure control system.The parameters of the PID controller are optimized.In the optimization process,the variation regularity of the rate of cabin pressure change under various conditions is considered.An approach to prioritize the control of the rate of change of cabin pressure based on the flight status model is proposed and verified experimentally.The experimental results indicate that the proposed approach can be adopted for the designed digital electro-pneumatic cabin pressure control system to obtain a better cabin pressure schedule and rate of cabin pressure change. | Nie Jinfang Pan Quan Shen Hao Song Zhitao Zhang Dalin | 2016 | Transactions of Nanjing University of Aeronautics and Astronautics2016,33,5: | 3 |
| 18 | Steady thermal hydraulic analysis for a molten salt reactor显示文摘The Molten Salt Reactor (MSR) can meet the demand of transmutation and breeding. In this study, theoretical calculation of steady thermal hydraulic characteristics of a graphite-moderated channel type MSR is conducted. The DRAGON code is adopted to calculate the axial and radial power factor firstly. The flow and heat transfer model in the fuel salt and graphite are developed on basis of the fundamental mass, momentum and energy equations. The results show the detailed flow distribution in the core, and the temperature profiles of the fuel salt, inner and outer wall in the nine typical elements along the axial flow direction are also obtained. | ZHANG Dalin QIU Suizheng LIU Changliang SU Guanghui | 2008 | Nuclear Science and Techniques2008,19,3: | 3 |
| 19 | Geographic variation in photoperiodic diapause induction and diapause intensity in Sericinus montelus (Lepidoptera Papilionidae)显示文摘由于扑灭的风险和燕子尾巴蝴蝶的装饰价值, Sericinus montelusGray (鳞翅目:Papilionidae ) 在中国,本地改编的知识为保存和种类的节俭的利用是重要的。在现在的学习, photoperiodic diapause 正式就职和 diapause 紧张 ofS。从 Jiamusi 的 monteluspopulations (46 潩 ? 潣汬' 陶?牦浯 ? 慨杮桳?? 湵湡眠牥 ? | Xiao-Ping Wang Qiu-Sheng Yang Peter Dalin Xing-Miao Zhou Zhi-Wen Luo Chao-Liang Lei | 2012 | Insect Science2012,19,3: | 3 |
| 20 | An application of the LTP_DSEF model to heavy precipitation forecasts of landfalling tropical cyclones over China in 2018显示文摘Recently, a track-similarity-based Dynamical-Statistical Ensemble Forecast(LTP_DSEF) model has been developed in an attempt to predict heavy rainfall from Landfalling Tropical cyclones(LTCs). In this study, the LTP_DSEF model is applied to predicting heavy precipitation associated with 10 LTCs occurring over China in 2018. The best forecast scheme of the model with optimized parameters is obtained after testing 3452 different schemes for the 10 LTCs. Then, its performance is compared to that of three operational dynamical models. Results show that the LTP_DSEF model has advantages over the three dynamical models in predicting heavy precipitation accumulated after landfall, especially for rainfall amounts greater than 250 mm. The model also provides superior or slightly inferior heavy rainfall forecast performance for individual LTCs compared to the three dynamical models. In particular, the LTP_DSEF model can predict heavy rainfall with valuable threat scores associated with certain LTCs, which is not possible with the three dynamical models. Moreover, the model can reasonably capture the distribution of heavier accumulated rainfall, albeit with widespread coverage compared to observations. The preliminary results suggest that the LTP_DSEF model can provide useful forecast guidance for heavy accumulated rainfall of LTCs despite its limited variables included in the model. | Zuo JIA Fumin REN Dalin ZHANG Chenchen DING Mingjen YANG Tian FENG Boyu CHEN Hui YANG | 2020 | Science China Earth Sciences2020,63,1: | 3 |