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Bone Loss Induced by Simulated Microgravity,Ionizing Radiation and/or Ultradian Rhythms in the Hindlimbs of Rats

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Biomedical and Environmental Sciences 2018年第2期31卷 126-135页

作者： ZHANG Ya Nan SHI wen Gui LI he HUA Jun Rui FENG xiu WEI wen Jun WANG Ju Fang he Jin Peng LEI Su wen Key Laboratory of Space Radiobiology of Gansu Province&CAS Key Laboratory of heavy Ion Radiation Biology and Medicine Institute of Modern PhysicsChinese Academy of SciencesLanzhou 730000GansuChina University of Chinese Academy of Sciences Beijing 100049China Office of health Standards Chinese Center for Disease Control and PreventionBeijing 102206China

Objective To better understand the pathological causes of bone loss in a space environment, including microgravity, ionizing radiation, and ultradian *** Sprague Dawley （SD） rats were randomly divided into a baseline group, a control group, a hindlimb suspension group, a radiation group, a ultradian rhythms group and a combined-three-factor group. After four weeks of hindlimb suspension followed by X-ray exposure and/or ultradian rhythms, biomechanical properties, bone mineral density, histological analysis, microstructure parameters, and bone turnover markers were detected to evaluate bone loss in hindlimbs of *** Simulated microgravity or combined-three factors treatment led to a significant decrease in the biomechanical properties of bones, reduction in bone mineral density, and deterioration of trabecular parameters. Ionizing radiation exposure also showed adverse impact while ultradian rhythms had no significant effect on these outcomes. Decrease in the concentration of the turnover markers bone alkaline phosphatase （bALP）, osteocalcin （OCN）, and tartrate-resistant acid phosphatase-5b （TRAP-Sb） in serum was in line with the changes in trabecular *** Simulated microgravity is the main contributor of bone loss. Radiation also results in deleterious effects but ultradian rhythms has no significant effect. Combined-three factors treatment do not exacerbate bone loss when compared to simulated microgravity treatment alone.

关键词： Bone loss Microgravity Radiation Ultradian rhythms

LUMP AND INTERACTION SOLUTIONS TO LINEAR (4+1)-DIMENSIONAL PDES

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Acta Mathematica Scientia 2019年第2期39卷 498-508页

作者： wen-xiu MA College of Mathematics and Physics Shanghai University of Electric Power Department of Mathematics King Abdulaziz University Department of Mathematics and Statistics University of South Florida Department of Mathematics Zhejiang Normal University College of Mathematics and Systems Science Shandong University of Science and Technology International Institute for Symmetry Analysis and Mathematical Modelling Department of Mathematical Sciences North-West University Mafikeng Campus

Taking a class of linear(4+1)-dimensional partial differential equations as examples, we would like to show that there exist lump solutions and interaction solutions in(4+1)-dimensions. We will compute abundant lump solutions and interaction solutions to the considered linear(4+1)-dimensional partial differential equations via symbolic computations,and plot three specific solutions with Maple plot tools, which supplements the existing literature on lump, rogue wave and breather solutions and their interaction solutions in soliton theory.

关键词： symbolic computation lump solution: interaction solution

Bi-Hamiltonian Structure of a Third-Order Nonlinear Evolution Equation on Plane Curve Motions

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Communications in Theoretical Physics 2007年第2X期48卷 211-214页

作者： REN wen-xiu Alatancang Department of Mathematics Inner Mongolia University Hohhot 010021 China Department of Mathematics Inner Mongolia University of Technology Hohhot 010051 China

In the present paper, we identify the integrability of the third-order nonlinear evolution equation ut = （1/2）（（uxz ＋ u）^-2）z in a Hamiltonian viewpoint. We prove that the recursion operator obtained by ***. Sakovich is hereditary, and then deduce a bi-Hamiltonian structure of the equation by using some decomposition of the hereditary operator. A hierarchy associated to the equation is also shown.

关键词： nonlinear evolution equation bi-Hamiltonian structure hereditary operator integrability

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胆总管汇合部微切开探查取石术的优越性

中华普通外科学文献（电子版） 2013年第2期7卷 28-30页

作者：陈剑缪刚李尧贺修文叶晓华陈敏韦军民卫生部北京医院普外科北京100730 卫生部北京医院放射科北京100730

目的探讨汇合部胆道微切开取石术治疗胆管结石的优越性,并进一步明确胆道取石中放置T管的适用范围。方法针对85例实施胆道微切开手术的患者,运用MRCP(磁共振胰胆管造影)、Advantage Workstation AW4.2-07sdc软件、术中胆道镜成像系统、... 详细信息

目的探讨汇合部胆道微切开取石术治疗胆管结石的优越性,并进一步明确胆道取石中放置T管的适用范围。方法针对85例实施胆道微切开手术的患者,运用MRCP(磁共振胰胆管造影)、Advantage Workstation AW4.2-07sdc软件、术中胆道镜成像系统、图画等方法,对胆道微切开取石的适用范围进行了系统性地讨论。结果绝大多数胆管结石患者的胆总管宽度在8mm以上,而胆管的宽度可能与结石的大小和多少相关。胆管宽度≥11mm(16例)的MRCP结石影像面积(mm2)较胆管宽度<11mm(14例)的MRCP结石影像面积显著性增大(148±67 vs 47±31,P<0.05)。对于胆总管下段非游离、多发、结构致密结石,由于一次性彻底取石困难,需留置T管引流备二次胆道镜检查。结论胆道微切开取石技术可避免大多数不必要的术后T管处理,尤其适合于早期诊断的胆管结石。T管引流多仅限于一次性彻底取石困难、病情复杂的患者。

关键词：胆管结石微切开 T管引流 MRCP

Rapid Hypoeutectic Growth Within a Highly Undercooled Liquid Under containerless Condition

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Chinese Physics Letters 2002年第4期19卷 584-587页

作者： Han xiu-Jun, Yao wen-Jing Department of Applied Physics Northwestern Polytechnical University

Rapid hypoeutectic growth from a highly undercooled liquid was accomplished by containerless processing Ni-32%Sb hypoeutectic alloy in a 3m drop tube. The containerless state during the free fall of the droplet produces substantial undercooling up to 350K (0.24TL). The growth mechanism is found to transform from primary α-Ni dendrite plus lamellar eutectic to lamellar eutectic and finally to anomalous eutectic if droplet undercooling exceeds the two thresholds of 112K and 242K, respectively. Based on the current eutectic and dendritic growth models, the eutectic coupled zone is calculated and used to explain the growth mechanism transition. Calculations also indicate that the growth of α-Ni primary dendrite was mainly controlled by solute diffusion.

关键词： growth(materials) Dendrites dendrites hypoeutectic growth solute diffusion free fall hypoeutectic alloy Undercooling EUTECTIC Growth anomalous eutectic

Integrable nonlocal PT-symmetric generalized so(3,R)-mKdV equations

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Communications in Theoretical Physics 2023年第12期75卷 19-24页

作者： Shou-Ting Chen wen-xiu Ma School of Mathematics and Statistics Xuzhou University of TechnologyXuzhou 221008JiangsuChina Department of Mathematics Zhejiang Normal UniversityJinhua 321004ZhejiangChina Department of Mathematics King Abdulaziz UniversityJeddah 21589Saudi Arabia Department of Mathematics and Statistics University of South FloridaTampaFL 33620-5700United States of America School of Mathematical and Statistical Sciences North-West UniversityMafikeng CampusPrivate Bag X2046Mmabatho 2735South Africa

Based on a soliton hierarchy associated with so(3,R),we construct two integrable nonlocal PT-symmetric generalized mKdV *** key step is to formulate two nonlocal reverse-spacetime similarity transformations for the involved spectral matrix,and therefore,integrable nonlocal complex and real reverse-spacetime generalized so(3,R)-mKdV equations of fifth-order are *** resulting reduced nonlocal integrable equations inherit infinitely many commuting symmetries and conservation laws.

关键词： integrable equation lax pair nonlocal reduction PT-symmetry zero curvature equation

Crisis of Transient Chaos

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Chinese Physics Letters 2002年第7期19卷 901-903页

作者： Wang wen-xiu, Lu Yun-Qing Department of Physics and Complexity Science Center Yangzhou University

A new kind of crisis, which is marked by a sudden change of a strange repeller, is observed in an electronic relaxation oscillator. Firstly, by its simplified piecewise linear model, we show analytically that a strange repeller appears after a hole-induced crisis, and that the fractal dimension of the strange repeller and the average lifetime of the iterations in the region occupied by the original attractor suddenly change at the critical parameter value when the repeller disappears. Our numerical investigation convinces us that the corresponding phenomenon can be found in the original electronic relaxation oscillator.

关键词： Fractal dimension

Organic matter accumulation in lacustrine shale of the Permian Jimsar Sag,Junggar Basin,NW China

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Petroleum Science 2023年第3期20卷 1327-1346页

作者： xiu-Jian Ding wen-Jun he Hai-Lei Liu Xu-Guang Guo Ming Zha Zhong-Fa Jiang School of Geosciences in China University of Petroleum QingdaoShandong266580China Research Institute of Petroleum Exploration and Development PetroChina Xinjiang Oilfield CompanyKaramayXinjiang841000China

The lacustrine organic-rich shale in the Permian Lucaogou(LCG)Formation of the Jimsar Sag,Junggar Basin,is one of the main shale oil plays in *** this paper,geological and geochemical research techniques were employed to evaluate the geochemical variability of the lacustrine shale and the pro-duction of organic matter and its preservation *** LcG Formation is characterized by its complex mineral compositions and a wide range of organic matter richness and *** presence of high proportions ofβ-carotane and C2g steranes,indicates that the organic matter mainly originated from phytoplankton and aquatic algal-bacterial organisms,especially *** study found that the productivity of the Lower LCG Member(P2li)was highest,and the Middle LCG Member(P_(2)l_(2))was the *** the deposition of the Lower LCG Member,the lake's bottom water was predominantly a reducing environment,and the degradation of organic matter was largely a result of bacterial sulfate *** the deposition of the Middle and Upper LCG members,the lake's bottom water was mainly oxidizing,and the degradation of organic matter was likely to be caused by aerobic *** on a comprehensive analysis of the origin and production of organic matter,as well as its depo-sitional environment and preservation conditions,two organic matter accumulation models were pro-posed to explain the distribution of the organic-rich *** model A,the high influx of volcanic ash released nutrients and brought abundant sulfate into the water,the accumulation of organic matter was mainly controlled by the preservation of organic matter,which was mainly controlled by *** the model B,the influx of volcanic ash was small,organic matter was mainly degraded by oxygen and the accumulation of organic matter is mainly determined by the production of organic matter.

关键词： Lucaogou formation Jimsar sag Organic-matter-rich shale Organic matter accumulation Organic matter productivity Bacterial sulfate reduction

Growth and Contaminant Removal Effect of Several Plants in Constructed Wetlands

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Journal of Integrative Plant Biology 2009年第3期51卷 325-335页

作者： xiu-Yun Cheng Ming-Qiu Liang wen-Yin Chen Xu-Cheng Liu Zhang-he Chen Key Laboratory of Ecology and Environmental Science in Guangdong Higher Education and Guangdong Provincial Key Laboratory of Biotechnology for Plant Development College of Life Science South China Normal University Guangzhou 510631 China

The aim of the present study is to probe the relation between plant growth and its decontamination effect in constructed wetlands. Four species were studied in the small-scale mono-cultured constructed wetlands, which were fed with domestic wastewater. Plant growth indexes were correlated with contaminant removal performance of the constructed wetlands. Wetlands planted with Cyperus flabelliformis Rottb. showed the highest growth indexes such as shoot growth, biomass, root activity, root biomass increment, and the highest contaminant removal rates, whereas wetlands planted with Vetiveria zizanioides L. Nash had the lowest growth indexes and the lowest removal rates. Above-ground biomass and total biomass were significantly correlated with ammonia nitrogen removal, and below-ground biomass with soluble reactive phosphorus removal. Photosynthetic rate had higher correlation with nitrogen removal in these species. Root activity and root biomass increment was more correlated with 5 d biochemical oxygen demand removal. Chemical oxygen demand removal had lower correlations with plant growth indexes. All four species had higher removal rates in summer and autumn. The results suggest that the effect of plant growth on contaminant removal in constructed wetlands were different specifically in plants and contaminants.

关键词： constructed wetland contaminant removal growth plant.