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轻度认知障碍老人与认知正常老人在不同单双任务下姿势控制能力的差异性

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中国组织工程研究 2025年第8期29卷 1643-1649页

作者：张雨馨于聪张翠丁建军陈岩山东体育学院山东省济南市250102 山东省体育科学研究中心山东省济南市250102 山东体育学院运动与健康学院山东省济南市250102

背景:老年人由于轻度认知障碍而引起姿势控制能力下降,导致跌倒风险增高。双任务是在接近真实生活场景下评估认知与姿势控制能力关系的主要研究范式,站立时足底压力中心位移样本熵可代表姿势控制的复杂程度。目的:基于压力中心位移样本... 详细信息

背景:老年人由于轻度认知障碍而引起姿势控制能力下降,导致跌倒风险增高。双任务是在接近真实生活场景下评估认知与姿势控制能力关系的主要研究范式,站立时足底压力中心位移样本熵可代表姿势控制的复杂程度。目的:基于压力中心位移样本熵分析轻度认知障碍老年人与认知正常老年人在姿势控制-空间工作记忆任务中姿势稳定性特征及控制策略的差异,探究认知功能损伤对站立姿势控制能力影响。方法:筛选出符合条件的16名轻度认知障碍老年人和17名认知正常老年人为研究对象,老年人分别完成5种测试任务,包括空间工作记忆、双脚平衡站立、Romberg站立、双脚平衡站立-空间工作记忆双任务、Romberg站立-空间工作记忆双任务,每个任务有效完成3次。使用Kistler三维测力台采集足底压力中心数据,测试指标包括认知行为学指标(认知得分与反应时长)、动力学指标(压力中心位移及样本熵)。结果与结论:①轻度认知障碍老年人在执行空间工作记忆任务时认知得分最大、反应时间最短,双脚平衡站立-空间工作记忆双任务居中,Romberg站立-空间工作记忆双任务认知得分最小、反应时长最长,任务间比较差异均有显著性意义(P0.05);在两种双任务下,与认知正常老年人相比,轻度认知障碍老年人的认知得分更小、反应时长更长(P<0.05),同时轻度认知障碍老年人压力中心前后、内外方向位移更大,压力中心前后、内外方向位移样本熵值更小(P<0.05);④结果表明:与认知正常老年人相比,轻度认知障碍老年人在执行双任务时姿势控制复杂度降低,系统适应性较差,自动调控能力下降,更容易受到空间工作记忆干扰,跌倒风险增大。

关键词：轻度认知障碍老年人空间工作记忆姿势控制双任务样本熵

Water dissociation on the reduced PuO2（110） surface from first principles

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Science China(Physics,Mechanics & Astronomy) 2019年第10期62卷 3-7页

作者： cui zhang Yu Yang Ping zhang Institute of Physics Chinese Academy of SciencesBeijing 100190China Institute of Applied Physics and Computational Mathematics Beijing 100088China Center for Applied Physics and Technology Peking UniversityBeijing 100871China

We present a first-principles investigation on the dynamics and mechanism of the oxidation reaction between water molecules and the reduced PuO2(110)surface using ab initio molecular dynamics(AIMD)simulations in combination with density functional theory(DFT)+U *** find a dominating dissociation preference of water molecules for the vacancy defect sites on the PuO2(110)surface,irrespective of the water or vacancy *** to hybridizations between the frontier orbitals of water molecule and the electronic states of the vacancy vicinity,partial water dissociation at the vacancy sites is exothermic and *** dissociation product,an OH group,further hydrogenates the PuO2(110)surface by occupying the vacancy *** also observe surface vacancy diffusion induced by the interactions between the water molecules and the surface oxygen atom in the proximity of the defect sites.

关键词： surface science first principles molecular dynamics water dissociation

Removal of steroid hormones from mariculture system using seaweed Caulerpa lentillifera

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Frontiers of Environmental Science & Engineering 2022年第2期16卷 1-11页

作者： Jian Lu cui zhang Jun Wu CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation Yantai Institute of Coastal Zone Research(YIC)Chinese Academy of Sciences(CAS)Shandong Key Laboratory of Coastal Environmental ProcessesYICCASYantai 264003China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China Yantai Research Institute and Graduate School Harbin Engineering UniversityYantai 265501China

The removal of steroid hormones from the mariculture system using seaweeds(Caulerpa lentillifera,Ulva pertusa,Gracilaria lemaneiformis,and Codium fragile)was *** results illustrated that both 17β-estradiol(E_(2))and 17α-ethinylestradiol(EE_(2))could be removed by the seaweeds at different levels,and the Caulerpa lentillifera was the most efficient *** than 90%of E_(2) or EE_(2) at concentration of 10μg/L was removed by Caulerpa lentillifera within 12 *** including initial quick biosorption,the following slow accumulation,and biodegradation might explain the removal mechanisms of E_(2)/EE_(2) by Caulerpa lentillifera.E_(2)/EE_(2) removal was positively related to the nutrient level and the initial concentration of steroid hormone.A significant linear relationship for E_(2) and EE_(2) existed between the initial pollutant concentration and the average removal *** highest removal kinetic constant(k)value was obtained at 30℃as 0.34/h for E_(2) and at 20℃as 0.28/h for EE_(2),demonstrating the promising application potential of Caulerpa lentillifera in the water purification of the industrialized mariculture system with relatively high water *** and efficient removal of E_(2) and EE_(2) by Caulerpa lentillifera was still achieved after 3 cycles in the pilot-scale *** steroid hormones and nutrients in mariculture wastewater could also be simultaneously removed using Caulerpa *** findings demonstrated that Caulerpa lentillifera was the promising seaweed for the removal of steroid hormones in mariculture systems.

关键词： Phycoremediation Steroid hormones Seaweed Mariculture Caulerpa lentillifera

Anti-programmed death 1 antibody in the treatment of coexistent Mycobacterium fortuitum and lung cancer: A case report

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World Journal of Clinical Cases 2022年第12期10卷 3801-3807页

作者： cui-cui zhang Peng Chen Department of Thoracic Oncology Tianjin Medical University Cancer Institute and HospitalTianjin 300060China

BACKGROUND Nontuberculous mycobacterium(NTM) refers to all mycobacteria except Mycobacterium tuberculosis and Mycobacterium leprae, also known as environmental Mycobacterium. The patients with lung cancer and NTM are somewhat special;the two diseases are inevitably influenced by each other. It brings difficulties and challenges to the choice of treatment. Recently, cancer immunotherapy has been considered one of the pillars for the treatment of lung cancer. However, the clinical experience in the application of immune checkpoint inhibitors is scarce for lung cancer patients with pulmonary tuberculosis, and lung cancer with NTM is even more rare. Although it ameliorates lung cancer, immunotherapy with immune checkpoint inhibitors presents complications of infectious diseases, including tuberculosis and *** SUMMARY A 61-year-old male patient visited a doctor in May 2019. His admitting diagnoses were:(1) Cancer of the left lung with a pathological diagnosis of poorly differentiated non-small cell carcinoma, likely poorly differentiated adenocarcinoma, clinical stage Ⅲb(T3N3M0);and(2) Mycobacterium fortuitum(M. fortuitum) infection. We chose to proceed with pembrolizumab treatment. After two treatment cycles, a chest computed tomography scan showed a new irregular subpleural mass in the anterior segment of the left upper lobe of the lung, a reduction in the mediastinal enlarged lymph node, and no other obvious changes. Next, an ultrasound-guided biopsy of the new tumor was performed. Pathological examination showed that a large number of carbon particles were deposited in the alveolar tissue with histiocyte reaction and multinucleated giant cell formation. The tuberculosis(TB) specialist suggested that anti-TB therapy be combined with continued antitumor treatment. The patient continued to be treated with pembrolizumab. After 14 cycles, the lesion shrunk by 79%, there was no recurrence of M. fortuitum infection, and there were no intolerable adverse ***

关键词： Mycobacterium fortuitum Nontuberculous mycobacterium Non-small cell lung cancer Immune checkpoint inhibitors Case report

Three-dimensional massive Kiselev AdS black hole and its thermodynamics

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Communications in Theoretical Physics 2021年第10期73卷 158-164页

作者： Yuan-zhang cui Wei Xu School of Mathematics and Physics China University of GeosciencesWuhan 430074China

We present an exact three-dimensional massive Kiselev AdS black hole solution. This Kiselev black hole is neither perfectly fluid, nor is it the quintessential solution, but the BTZ black hole modified by the anisotropic matter. This black hole possesses an essential singularity at its radial origin and a single horizon whose radius will increase monotonically when the parameter of the anisotropic matter field ω decreases. We calculate all thermodynamic quantities and find that the first law of thermodynamics of this massive Kiselev AdS black hole can be protected, while the consistent Smarr formula is only held in the extended thermodynamic phase space. After examining the sign of free energy, we conclude that there is no Hawking-Page transition since the massive Kiselev AdS black hole phase is always thermodynamically favored. Moreover, we study the phase transition between the Kiselev AdS black hole and BTZ black hole by considering the matchings for their temperature. We find that the Kiselev AdS black hole is still a thermodynamically more preferred phase, because it always has a smaller amount of free energy than the BTZ black hole, which seems to indicate that the anisotropic matter field may emerge naturally in BTZ black hole spacetime under some thermal fluctuations. We also show a first order phase transition between the Kiselev AdS black hole phase with -1

关键词： Kiselev black hole black hole thermodynamics three dimensions

The Influence of the Number of Non-（sub）normal Non-abelian Subgroups on Solvability of Finite Groups

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Algebra Colloquium 2016年第2期23卷 325-328页

作者： Jiangtao Shi cui zhang School of Mathematics and Information Science Yantai University Yantai Shandong 264005 China

We obtain some sufficient conditions on the number of non-（sub）normai nonabelian subgroups of a finite group to be solvable, which extend a result of Shi and zhang in 2011.

关键词： non-abelian subgroup non-normal non-subnormal solvable

A Note on TI-Subgroups of a Finite Group

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Algebra Colloquium 2014年第2期21卷 343-346页

作者： Jiangtao Shi cui zhang School of Mathematics and Information Science Yantai University Yantai Shandong 264005 China Department of Applied Mathematics and Computer Science Technical University of Denmark DK-2800 Lyngby Denmark

Let G be a finite group and H a subgroup of G. Recall that H is said to be aTI-subgroup ofG ifHg∩H = 1 or H for each b∈ G. In this note, we prove that if all non-nilpotent subgroups of a finite non-nilpotent group G... 详细信息

关键词： finite group non-nilpotent subgroup TI-subgroup normal

Some Sufficient Conditions on the Number of Non-abelian Subgroups of a Finite Group to be Solvable

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Acta Mathematica Sinica,English Series 2011年第5期27卷 891-896页

作者： Jiang Tao SHI cui zhang LMAM & School of Mathematical Sciences Peking University Beijing 100871 P. R. China University of Primorska FAMNIT Glagoljaska 8 6000 Koper Slovenia University of Primorska PINT Muzejski trg 2 6000 Koper Slovenia

Thompson＇s theorem indicates that a finite group with a nilpotent maximal subgroup of odd order is solvable. As an important application of Thompson＇s theorem, a finite group is solvable if it has an abelian maximal subgroup. In this paper, we give some sufficient conditions on the number of non-abelian subgroups of a finite group to be solvable.

关键词： Finite group abelian subgroup solvable group

A SET OF SYMMETRIC QUADRATURE RULES ON TRIANGLES AND TETRAHEDRA

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Journal of Computational Mathematics 2009年第1期27卷 89-96页

作者： Linbo zhang Tao cui Hui Liu LSEC ICMSEC Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China

We present a program for computing symmetric quadrature rules on triangles and tetrahedra. A set of rules are obtained by using this program. Quadrature rules up to order 21 on triangles and up to order 14 on tetrahedra have been obtained which are useful for use in finite element computations. All rules presented here have positive weights with points lying within the integration domain.

关键词： Finite element Numerical integration Quadrature Cubature Triangle Tetrahedron.