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Static Properties of Λ-Hypernuclei

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Chinese Physics Letters 2001年第8期18卷 1030-1032页

作者： TAN Yu-Hong LUO Yan-An ning ping-Zhi MA Zhong-Yu Department of Physics Nankai UniversityTianjin 300071 China Institute of Atomic Energy Beijing 102413

Static properties ofΛ-hypernuclei are calculated self-consistently in the relativistic mean-field *** effect ofΛon the core nucleons are *** is found that the rms radii of neutron become smaller than those of ordina... 详细信息

关键词： model ordinary relativistic

Crystal Structure and Fluorescent Property of a 2D Coordination Polymer:[Eu(PCPA)_3(H_2O)]_n

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Chinese Journal of Structural Chemistry 2006年第7期25卷 844-848页

作者： SUN Rui-Qing ZHANG Han-Hui CAO Yan-ning CHEN Yi-ping WANG Zhen YANG Qi-Yu Department of Chemistry Fuzhou University＇ Fuzhou Fujian 350002 China

The title coordination polymer [Eu（PCPA）3（H2O）]n （PCPA = p-chlorophenoxyacetate） has been synthesized under hydrothermal condition, determined by single-crystal X-ray diffraction and characterized by FT-IR, UV-VIS and fluorescent spectra. The crystal belongs to triclinic system, space group PI^- with a = 7.8036（1）, b = 12.7458（4）, c = 14.0208（3） A, α = 81.610（8）, β = 79.406（8）, γ = 77.567（7）°, V = 1330.40（5） A^3, C24H20Cl3EuO10, Mr = 726.71, Z = 2, F（000） = 716, Dc= 1.814 g/cm^3, λ（MoKa） = 0.71073 A, μ（MoKα） = 2.713 mm^-1, the final R = 0.0284 and wR = 0.0678 for 5529 observed reflections with I 〉 2σ（I）. The europium ions are located in a nine-coordinate environment. PCPA ions with two different coordination modes connect the metal ions to form 1D zigzag chains which are arranged to generate 2D supramolecular layers by intermolecular hydrogen bonds. The luminescence properties of the rare-earth ions are studied in this paper.

关键词： crystal structure europium p-ehiorophenoxyaeetate fluorescent property

Lime and Phosphate Could Reduce Cadmium Uptake by Five Vegetables Commonly Grown in South China

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Pedosphere 2011年第2期21卷 223-229页

作者： TAN Wan-Neng LI Zhi-An QIU Jing ZOU Bi LI ning-Yu ZHUANG ping WANG Gang South China Botanical Garden Chinese Academy of Sciences Guangzhou 510650 (China)

A pot experiment was conducted in artificially Cd-contaminated （5 mg Cd kg 1） soils to investigate the feasibility of using lime （3 g kg-1） or phosphate （80 mg P kg-1） to mitigate uptake of Cd by vegetables. Five common vegetables in South China, including lettuce （Lactuca sativa L. var. ramosa Hort.）, Chinese cabbage [Brassica rapa L. subsp. Chinensis （L.） var. parachinensis （L. H. Bailey） Hanect], Chinese broccoli （Brassica oleracea L. vat. albiflora Kuntze）, white amaranth （Amaranthus tricolor L.） and purslane （Amaranthus viridis L.）, were grown in the soils and harvested after 60 d. The results showed that liming significantly reduced Cd uptake by most vegetables by 40%-50% （or a maximum of 70%）, mainly due to immobilization of soil Cd. Increased availability of Ca in the soil might also contribute to the Cd uptake reduction as a result of absorption competition between Ca and Cd. Liming caused biomass reduction in white amaranth and purslane, but did not influence growth of the other vegetables. Phosphate decreased Cd uptake by vegetables by 12% 23%. Compared with lime, phosphate decreased, to a smaller extent, the bioavailability of Cd in most cases. Phosphate markedly promoted growth of vegetables. Changes in soil chemistry by adding lime or phosphate did not markedly influence nutrient uptake of vegetables except that lime increased Ca content and phosphate increased P content in shoots of the vegetables. The results suggested that a proper application of lime could be effective in reducing Cd uptake of vegetables, and phosphate could promote growth of the vegetables as well as alleviate the toxicity of Cd.

关键词： cadmium accumulation cadmium immobilization nutrient soil amendment

Effect of microRNA-155 on angiogenesis after cerebral infarction of rats through AT1R/VEGFR2 pathway

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Asian Pacific Journal of Tropical Medicine 2015年第10期8卷 810-816页

作者： Ying-Chun Meng Zhen-Ying Ding Hai-Quan Wang Li-ping ning Chao Wang Department of Rehabilitation Affiliated Shandong Provincial Hospital of Shandong University Department of Neurology Shandong Qixia People's Hospital

Objective:To explore the function and mechanism of microRNA-155 to regulate the angiogenesis after the cerebral infarction of rats through the angiotensin Ⅱ receptor 1(AT1R)/vascular endothelial growth factor(VEGF) signaling ***:Female SD rats were chosen for the construction of cerebral infarction model of rats using the modified right middle cerebral artery *** real-time PCR(RT-PCR) method was employed to detect the expression of microRNA-155 in each group at different time points after the cerebral infarction(1 h,I d,3 d and 7 d).SD rats were randomly divided into four groups(n=20 rats):sham operation group(Sham group),MACO group,MACO+microRNA-155 mimic group,and MACO+microRNA-155 inhibitor *** group was given the free graft,while MACO+microRNA-155 mimic group and MACO+microRNA-155 inhibitor group were treated with microRNA-155 mimic and microRNA-155 inhibitor *** Zea Longa5-point scale was used to score the neurologic impairment of rats in each group;2,3,5-triphenyl tetrazolium chloride staining to evaluate the volume of cerebral infarction of rats in each group;the immunohistochemistry to detect the expression of CD31;Western blot and RT-PCR to detect the expression of AT1 R and VEGF receptor 2(VEGFR2).Results:The expression of microRNA-155 was increased in the cerebral ischemia tissue after the cerebral *** was significantly increased at 1 d of ischemia and maintained at the high level for a long *** in the Sham group had no symptom of neurologic impairment while rats in the MACO group had the obvious neurologic *** being treated with microRNA-155 inhibitor,the neural function of MACO rats had been improved,with the decreased area of cerebral *** after being treated with microRNA-155 mimic,the neural function was further worsened,with the increased area of cerebral *** of immunohistoehemical assay indicated that microRNA-155 inhibitor could up-regulate the expressi

关键词： microRNA-155 Cerebral infarction Angiogenesis AT1R

Turing Patterns in a Reaction-Diffusion System

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Communications in Theoretical Physics 2006年第4期45卷 761-764页

作者： WU Yan-ning WANG ping-Jian HOU Chun-Ju LIU Chang-Song ZHU Zhen-Gang Key Laboratory of Material Physics Institute of Solid State Physics the Chinese Academy of Sciences P.O. Box 1129 Hefei 230031 China

We have further investigated Turing patterns in a reaction-diffusion system by theoretical analysis and numerical simulations. Simple Turing patterns and complex superlattice structures are observed. We find that the shape and type of Turing patterns depend on dynamical parameters and external periodic forcing, and is independent of effective diffusivity rate σ in the Lengyel Epstein model Our numerical results provide additional insight into understanding the mechanism of development of Turing patterns and predicting new pattern formations.

关键词： Turing pattern Lengyel-Epstein (LE) model

An Effective Formulation on Quantum Hadrodynamics at Finite Temperatures and Densities

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Communications in Theoretical Physics 2006年第3期45卷 527-534页

作者： SUN Bao-Xi Lü Xiao-Fu LI Lei ning ping-Zhi SHEN Peng-Nian ZHAO En-Guang College of Applied Sciences Beijing University of Technology Beijing 100022 Chin~ Department of Physics Sichuan University Chengdu 610064 China Department of Physics Nankai University Tianjin 300071 China Institute of High Energy Physics the Chinese Academy of Sciences P.O. Box 918（4） Beijing 100049 China Institute of Theoretical Physics the Chinese Academy of Sciences Beijing 100080 China

According to Wick＇s theorem, the second order self-energy corrections of hadrons in the hot and dense nuclear matter are calculated. Furthermore, the Feynman rules are summarized, and an effective formulation on quantum hadrodynamics at finite temperatures and densities is evauated. As the strong couplings between nucleons are considered, the self-consistency of this method is discussed in the framework of relativistic mean-field approximation. Debye screening masses of the scalar and vector mesons in the hot and dense nuclear matter are calculated with this method in the relativistic mean-field approximation. The results are different from those of thermofield dynamics and Brown-Rho conjecture. Moreover, the effective masses of the photon and the nucleon in the hot and dense nuclear matter are discussed.

关键词： quantum hadrodynamics Wick's theorem Debye screening masses

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精神障碍患者再入院率及影响因素的性别差异

临床精神医学杂志 2024年第1期34卷 59-62页

作者：杨纯玉钟笑梅刘伟健宁玉萍广东中山市第三人民医院 528451 广州医科大学附属脑科医院南方医科大学第一临床学院北京大学第六医院

目的:探讨精神障碍患者再入院率及影响因素的性别差异。方法:通过电子病历系统收集2009年1月1日至2018年12月31日于广州医科大学附属脑科医院住院且主要诊断为精神分裂症、抑郁症或双相情感障碍的患者的信息。采用COX回归分析探讨不同... 详细信息

目的:探讨精神障碍患者再入院率及影响因素的性别差异。方法:通过电子病历系统收集2009年1月1日至2018年12月31日于广州医科大学附属脑科医院住院且主要诊断为精神分裂症、抑郁症或双相情感障碍的患者的信息。采用COX回归分析探讨不同性别患者再入院的影响因素。结果:女性患者的再入院率较男性高(24.7%vs.22.6%,P<0.01)。有医疗保险及既往住院次数较多为男女性患者再入院的共同的危险因素(P均<0.01)。住院时间较短及主要诊断为双相情感障碍是男性患者特有的再入院危险因素(P均<0.01)。年龄较小及Charlson共病指数总分较高是女性患者特有的再入院危险因素(P均<0.01)。结论:男性患者的再入院率低于女性,住院时间短及主要诊断为双相情感障碍仅对男性患者的再入院有影响,年龄小及Charlson共病指数总分高仅对女性患者的再入院有影响。

关键词：精神障碍再入院性别差异

基于“知识-行动”模型的护理干预在胃癌根治术患者中的应用研究

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护理管理杂志 2024年第7期24卷 564-568页

作者：赵艳王梅红熊斐刘亨利练珊宁萍浙江省建德市第一人民医院手术室 311600

目的探讨基于“知识-行动”模型的护理干预方案在胃癌根治术患者中的应用效果。方法选取符合标准的300例接受胃癌根治术患者随机分为对照组和干预组,对照组接受胃癌根治术常规护理,干预组实施基于“知识-行动”模型的护理。比较干预... 详细信息

目的探讨基于“知识-行动”模型的护理干预方案在胃癌根治术患者中的应用效果。方法选取符合标准的300例接受胃癌根治术患者随机分为对照组和干预组,对照组接受胃癌根治术常规护理,干预组实施基于“知识-行动”模型的护理。比较干预前后两组胃癌根治术患者自我管理能力、希望水平、生活质量。结果干预后干预组患者自我管理能力、希望水平、生活质量得分显著高于对照组(P<0.01)。结论基于“知识-行动”模型的护理干预方案可提高胃癌根治术患者的自我管理能力、希望水平、促进患者术后恢复和改善生活质量,临床可推广应用。

关键词：知识-行动胃癌根治术护理

Serum Glypican 4 Levels Are Associated with Metabolic Syndrome in a Han Population from Guizhou Province, China

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Biomedical and Environmental Sciences 2019年第5期32卷 383-388页

作者： ning Dong ping XU Ke ZHU Hui Juan SHAN Guang Liang WANG Ding Ming ping Bo YU Yang Wen PAN Hui GONG Feng Ying Key Laboratory of Endocrinology of National Health Commission Dept. of EndocrinologyPeking Union Medical College HospitalTranslation Medicine CentreCAMS & PUMCBeijing 100730China Graduate School Hebei North UniversityZhangjiakou 075000HebeiChina Linfen Central Hospital Linfen 041000ShanxiChina Dept. of Endocrinology The First Affiliated Hospital of Wenzhou Medical UniversityZhejiang Provincial First Hospital of WenzhouWenzhou 325000ZhejiangChina Dept. of Epidemiology and Health Statistics Institute of Basic Medical SciencesCAMS & PUMCBeijing 100005China Guizhou Provincial Center for Disease Control and Prevention Guiyang 550004GuizhouChina Longli Center for Disease Control and Prevention Longli 551200GuizhouChina

Metabolic syndrome (MetS) is the presence of a battery of cardiovascular risk factors including abdominal obesity, hypertension, dyslipidemia, and disturbed carbohydrate metabolism[1]. MetS affects 20% of adults in the Western world and 33% of adults in China[2] and has become a serious public health problem worldwide. However, the mechanism underlying the occurrence and progression of MetS is still largely unclear. It is now well established that excess fat deposition leads to abdominal obesity, which plays a vital role in the underlying mechanism. Adipose tissue can function as an endocrine organ that secretes various adipokines. The dysregulated expression of adipokines caused by excess adiposity and adipocyte dysfunction, has been linked to the pathogenesis of MetS[3]. Some serum adipokines such as leptin, adiponectin, interleukin 6 (IL-6), and tumour necrosis factor-α(TNF-α), might be potential markers for MetS development.

关键词： Serum Glypican 4 Levels Metabolic Syndrome