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Journal of Ocean University of China 2018年第2期17卷 311-319页

作者： WANG Bin tang Yougang cai Runbo State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin UniversityTianjin 300354China Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration Shanghai 200240China

This paper presents a study on the motion response of a tension-leg platform(TLP) under first-and second-order wave forces, including the mean-drift force, difference and sum-frequency forces. The second-order wave force is calculated using the full-field quadratic transfer function(QTF). The coupled effect of the horizontal motions, such as surge, sway and yaw motions, and the set-down motion are taken into consideration by the nonlinear restoring matrix. The time-domain analysis with 50-yr random sea state is performed. A comparison of the results of different case studies is made to assess the influence of second-order wave force on the motions of the platform. The analysis shows that the second-order wave force has a major impact on motions of the TLP. The second-order difference-frequency wave force has an obvious influence on the low-frequency motions of surge and sway, and also will induce a large set-down motion which is an important part of heave motion. Besides, the second-order sum-frequency force will induce a set of high-frequency motions of roll and pitch. However, little influence of second-order wave force is found on the yaw motion.

关键词： tension-leg platform random wave second-order wave force quadratic transfer function sum-frequency differencefrequency set-down motion

New Layered SOA-Based Architecture for Multi-robots Cooperative Online SLAM

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Chinese Journal of Electronics 2014年第1期23卷 25-30页

作者： cai Yunfei tang Zhenmin ZHAO Chunxia Institute of Pattern Recognition and Artificial Intelligence Nanjing University of Science and Technology

A new layered multi-robots architecture for cooperative online simultaneous localization and mapping based on Service-oriented architecture(SOA) is proposed. This architecture is constructed by the concepts of service-oriented and loosely coupled center *** methods make robots' underlying function realization be transparent in cooperation and avoid the impact affected by robot heterogeneous characteristics, which will be beneficial to the system construction, expansion, restructuring and maintenance. All data packages follow the SOA unified data format, which can avoid the impact affected by sensor heterogeneous characteristics. The point to point serving model reduces the path of data transmission which can improve the timeliness of the system. All of these features can satisfy the requirements of multi-robots cooperative online SLAM. The simulation results show the feasibility, applicability and practicability of this architecture.

关键词： Service-oriented architecture(SOA) Multi-robot cooperative online SLAM(MRCO-SLAM) Loosely coupled

Mechanism of inhibiting type I interferon induction by hepatitis B virus X protein

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Protein & Cell 2010年第12期1卷 1106-1117页

作者： Junyi Jiang hong tang Key laboratory of Infection and Immunity of Chinese Academy of Sciences Institute of BiophysicsBeijing 100101China Graduate School of Chinese Academy of Sciences Beijing 100049China

Hepatitis B virus(HBV)is regarded as a stealth virus,invading and replicating efficiently in human liver undetected by host innate antiviral ***,we show that type I interferon(IFN)induction but not its downstream signaling is blocked by HBV replication in HepG2.2.15 *** effect may be partially due to HBV X protein(HBx),which impairs IFNβpromoter activation by both Sendai virus(SeV)and components implicated in signaling by viral *** a deubiquitinating enzyme(DUB),HBx cleaves Lys63-linked polyubiquitin chains from many proteins except TANK-binding kinase 1(TBK1).It binds and deconjugates retinoic acid-inducible gene I(RIG I)and TNF receptor-associated factor 3(TRAF3),causing their dissociation from the downstream adaptor CARDIF or TBK1 *** addition to RIG I and TRAF3,HBx also interacts with CARDIF,TRIF,NEMO,TBK1,inhibitor of kappa light polypeptide gene enhancer in B-cells,kinase epsilon(IKKi)and interferon regulatory factor 3(IRF3).Our data indicate that multiple points of signaling pathways can be targeted by HBx to negatively regulate production of type I IFN.

关键词： hepatitis B virus(HBV) HBV X protein(HBx) deubiquitination type I interferon

Hua's Theorem with s Almost Equal Prime Variables

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Acta Mathematica Sinica,English Series 2009年第7期25卷 1145-1156页

作者： Qing Feng SUN Heng cai tang Department of Mathematics Shandong University Ji'nan 250100 P. R. China

It is proved unconditionally that every sufficiently large positive integer satisfying some necessary congruence conditions can be represented as the sum of s almost equal k-th powers of prime numbers for 2 ≤ k ≤ 10... 详细信息

关键词： the additive theory of prime numbers short intervals circle method

Phytochemical interventions for post-traumatic stress disorder:A cluster co-occurrence network analysis using CiteSpace

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Journal of Integrative Medicine 2023年第4期21卷 385-396页

作者： Biao Gao Yi-cui Qu Meng-yu cai Yin-yin Zhang hong-tao Lu hong-xia Li Yu-xiao tang Hui Shen Department of Naval Nutrition and Food Hygiene Naval Medical UniversityShanghai 200433China Teaching and Research Support Center Naval Medical UniversityShanghai 200433China

Objective:This study investigated trends in the study of phytochemical treatment of post-traumatic stress disorder(PTSD).Methods:The Web of Science database(2007-2022)was searched using the search terms“phytochemicals”and“PTSD,”and relevant literature was *** clustering co-occurrence analysis and qualitative narrative review were ***:Three hundred and one articles were included in the analysis of published research,which has surged since 2015 with nearly half of all relevant articles coming from North *** category is dominated by neuroscience and neurology,with two journals,Addictive Behaviors and Drug and Alcohol Dependence,publishing the greatest number of papers on these *** studies focused on psychedelic intervention for *** timelines show an“ebb and flow”phenomenon between“substance use/marijuana abuse”and“psychedelic medicine/medicinal cannabis.”Other phytochemicals account for a small proportion of the research and focus on topics like neurosteroid turnover,serotonin levels,and brain-derived neurotrophic factor ***:Research on phytochemicals and PTSD is unevenly distributed across countries/regions,disciplines,and *** 2015,the research paradigm shifted to constitute the mainstream of psychedelic research thus far,leading to the exploration of botanical active ingredients and molecular *** studies focus on anti-oxidative stress and anti-inflammation.

关键词： Phytochemical Post-traumatic stress disorder Text analysis Clustering co-occurrence network Psychedelic

Stable Runge-Kutta discontinuous Galerkin solver for hypersonic rarefied gaseous flow based on 2D Boltzmann kinetic model equations

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Applied Mathematics and Mechanics(English Edition) 2017年第3期38卷 343-362页

作者： Wei SU Zhenyu tang Bijiao HE Guobiao cai School of Astronautics Beihang University Beijing 100191 China Beijing Institute of Spacecraft Environment Engineering Beijing 100094 China

A stable high-order Runge-Kutta discontinuous Galerkin(RKDG) scheme that strictly preserves positivity of the solution is designed to solve the Boltzmann kinetic equation with model collision integrals. Stability is kept by accuracy of velocity discretization, conservative calculation of the discrete collision relaxation term, and a limiter. By keeping the time step smaller than the local mean collision time and forcing positivity values of velocity distribution functions on certain points, the limiter can preserve positivity of solutions to the cell average velocity distribution functions. Verification is performed with a normal shock wave at a Mach number 2.05, a hypersonic flow about a two-dimensional(2D) cylinder at Mach numbers 6.0 and 12.0, and an unsteady shock tube flow. The results show that, the scheme is stable and accurate to capture shock structures in steady and unsteady hypersonic rarefied gaseous flows. Compared with two widely used limiters, the current limiter has the advantage of easy implementation and ability of minimizing the influence of accuracy of the original RKDG method.

关键词： model equation hypersonic flow discontinuous Galerkin (DG) conservative discretization positivity-preserving limiter Courant-Friedrichs-Lewy (CFL) condition

Texture of AZ31B magnesium alloy sheets produced by differential speed rolling technologies

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Rare Metals 2012年第5期31卷 415-419页

作者： LIU Huaqiang tang Di cai Qingwu LI Zhen National Engineering Research Center of Advanced Rolling Technology University of Science & Technology Beijing Beijing 100083 China

The effects of differential speed rolling (DSR) on the texture of AZ31B magnesium alloy sheets were investigated, which were achieved by tailoring deformation temperature, reduction, and speed ratio. The results show that the intensity of basal texture weakens with DSR. With the increase of the rolling temperature, the intensity of basal texture decreased first and then increased, which had a relation with the change of the orientation of the new grains of dynamic recrystallization during rolling. The effect of the reduction on the basal texture was made with the changing degree of sharp point of texture. With increasing the deformation at the same rolling temperature, the intensity of basal texture decreased, and the extending of contour lines decreased in the transverse direction, which was close to the circular distribution. Differential speed ratio has a greater impact on the intensity of the basal texture and has a less effect on the basal deflection. © The Nonferrous Metals Society of China and Springer-Verlag Berlin Heidelberg 2012.

关键词： Crystallization Deformation Dynamic recrystallization Magnesium alloys Speed

Preparation and characterization of organic polymer modified composite polyaluminum chloride

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Journal of Environmental Sciences 2006年第2期18卷 214-220页

作者： SHI Bao-you tang hong-xiao State Key Laboratory of Environmental Aquatic Chemistry Chinese Academy of Sciences Beijing 100085 China

Compared with traditional aluminum salts, polyaluminum chloride （PACI） has better coagulation-flocculation performance in turbidity removal. However, it is still inferior to organic polymers in terms of bridging function. In order to improve the aggregating property of PACl, different composite PACl flocculants were prepared with various organic polymers. The effect of organic polymer on the distribution or Al（Ⅲ） species in composite flocculants was studied using ^27TAl NMR and Al-ferron complexation methods. The charge neutralization and surface adsorption characteristics of composite flocculants were also investigated. Jar tests were conducted to evaluate the turbidity removal efficacy of organic polymer modified composite flocculants. The study shows that cationic polymer and anionic polymer have significant influences on the coagulation-flocculation behaviors of PACl. Both cationic and anionic polymers can improve the turbidity removal performancc of PACl but the mechanisms arc much different： cationic organic polymer mainly increases the charge neutralization ability, but anionic polymer mainly enhances the bridging function.

关键词： polyaluminum chloride(PACl) organic polymer composite flocculant

Serum ferritin levels in children with attention deficit hyperactivity disorder and tic disorder

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World Journal of Clinical Cases 2022年第22期10卷 7749-7759页

作者： cai-Yun tang Fang Wen Department of Psychiatry Beijing Children’s HospitalCapital Medical UniversityNational Center for Children’s HealthBeijing 100045China

BACKGROUND Iron plays an important role in neurodevelopmental functions in the *** ferritin levels are different in children with attention deficit hyperactivity disorder and tic disorder than in healthy *** To explore the current status of iron deficiency in children with neurodevelopmental disorders and its sex and age *** A total of 1565 children with attention deficit hyperactivity disorder(ADHD),1694 children with tic disorder(TD),93 children with ASD and 1997 healthy control children were included between January 1,2020,and December 31,2021 at Beijing Children's *** describe the differences in age levels and ferritin levels between different disease groups and their sex *** differences between the sexes in each disease were analyzed using the t *** incidence rate of low serum ferritin was used to describe the differences between different diseases and different age groups.A chi-square test was used to analyze the difference in the incidence of low serum ferritin between the disease group and the control *** of variance was used for comparisons between subgroups,and regression analysis was used for confounding factor *** A total of 1565 ADHD patients aged 5-12 years were included in this study,and the average serum ferritin levels of male and female children were 36.82±20.64μg/L and 35.64±18.56μg/L,respectively.A total of 1694 TD patients aged 5-12 years were included in this study,and the average serum ferritin levels of male and female children were 35.72±20.15μg/L and 34.54±22.12μg/L,*** age increased,the incidence of low serum ferritin in ADHD and TD first decreased and then increased,and 10 years old was the turning point of rising *** incidence of ADHD with low serum ferritin was 8.37%,the incidence of TD with low serum ferritin was 11.04%,and the incidence of the healthy control group with low serum ferritin was 8.61%,among which male children with TD accounte

关键词： Iron deficiency Attention deficit hyperactivity disorder Tic disorder Serum ferritin levels Retrospective study

Multichannel DEM reconstruction method based on Markov random fields for bistatic SAR

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Science China(Information Sciences) 2015年第6期58卷 39-52页

作者： hong Feng tang JiangWen LU PingPing Institute of Electronics Chinese Academy of Sciences(IECAS) Department of Space Microwave Remote Sensing System University of Chinese Academy of Sciences

It appears very interesting and particularly useful to perform DEM reconstruction with the configuration of multichannel bistatic SAR(Bi SAR) because of its considerable advantages. In typical processing flow of multichannel interferometric synthetic aperture radar(In SAR), techniques based on statistical methods or iterative methods does not work very well with limits of specific Bi SAR configurations. Moreover, the tradeoff between the correctness and precision of the reconstruction of different baselines needs to be overcome as *** on the advantages of multichannel Bi SAR configuration, basic idea is the joint utilization of amplitude data, iterative reconstruction results and ML results to help the optimization of the total MRF energy ***, a multichannel DEM reconstruction method based on Markov Random Fields(MRFs) for Bi SAR, which concerns much about discontinuities and energy functions, is proposed to achieve not only correct but also more precise results. Afterward, the strategy to determine the weight parameter and processing flow is ***, simulated and real data experiments are given to validate the proposed method.

关键词： interferometric synthetic aperture radar(In SAR) Markov random fields(MRFs) unwrapping multichannel/multibaseline bistatic SAR(B