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Morphology-Tailored Dynamic State Transition in Active-Passive Colloidal Assemblies

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Research 2024年第3期2024卷 751-760页

作者： Nan Yu Zameer h.shah Mingcheng Yang Yongxiang Gao Institute for Advanced Study Shenzhen University518060ShenzhenChina Key Laboratory of Optoelectronic Device and Systems of Ministry of Education and Guangdong Province College of Optoelectronic EngineeringShenzhen University518060ShenzhenChina Beijing National Laboratory for Condensed Matter Physics and Laboratory of Soft Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Songshan Lake Materials Laboratory DongguanGuangdong 523808China.

Mixtures of active self-propelled and passive colloidal particles promise rich assembly and dynamic states that are beyond reach via equilibrium ***,controllable transition between different dynamic states remains ***,we reveal a plethora of dynamic behaviors emerging in assemblies of chemically propelled snowman-like active colloids and passive spherical particles as the particle shape,size,and composition are *** example,assembles of one or more active colloids with one passive particle exhibit distinct translating or orbiting states while those composed of one active colloid with 2 passive particles display persistent“8”-like cyclic motion or hopping between circling states around one passive particle in the plane and around the waist of 2 passive ones out of the plane,controlled by the shape of the active colloid and the size of the passive particles,*** morphology-tailored dynamic transitions are in excellent agreement with state diagrams predicted by mesoscale dynamics *** work discloses new dynamic states and corresponding transition strategies,which promise new applications of active systems such as micromachines with functions that are otherwise impossible.

关键词： Transition otherwise transitions

Contraceptive practice among postpartum urban women in Zibo city of Shandong province

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生殖医学杂志 2002年第Z1期11卷 65-70页

作者：张立英刘云嵘 iqbal h.shah National Research Institute for Family Planning Bei-jing 100081China Special Program of Research Development and Re-search Training in Human ReproductionDepartment of Re-productive Health ResearchWorld Health Organization

Objectives: The objective of this study was to investigate the existing pattern of contraceptive use among postpartum women in urban areas of ***: A hospital based longitudinal study was carried out in Z ibo city, Shandong province of China from June 1996 to November 1997. Both quant itative and qualitative research approaches were used. This report mainly deals with the quantitative data. Qualitative data provided insights into the behavior of breastfeeding and contraceptive use, which helped to understand the percepti ons and behavior of people and community in this area. Information was obtained from 496 new parturient women who gave birth in the five district hospitals wher e they first were interviewed. They were then followed-up three timings for int erview at 42 days, four months and one year after delivery, respectively. Struct ured interview questionnaires filled out by trained interviewers. Total subjects of 492 women were for analysis in this ***: The results showed that 74.4% of women were using contr aceptive methods when they resuming the first sexual activity after delivery. Du ring postpartum period, the majority of women interviewed used condom within 3 m onths, for instance, at 3 months after delivery, there were still 84.5% of women use condom. Afterwards, most of them switched to IUD. Life table analysis shows that the continuation rates of full breastfeeding, abstinence, amenorrhea and a cceptance of contraceptive methods at 4 months after delivery were 35.5%, 68.2%, 5.0%, and 86.3%, respectively. Conclusion: The policy implications of this study are that contr aceptive services and information for postpartum women in urban areas need to be improved further. The contraceptive methods providing for postpartum women shou ld have more methods to let women choose and instead of only one method for all of postpartum women.

关键词： Contraception Postpartum Breastfeeding

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上海市大学生非意愿性行为的聚类特征分析

中国卫生统计 2011年第1期28卷 33-36页

作者：冯永亮牛红峰左霞云高尔生 iqbal h.shah 楼超华复旦大学公共卫生学院 200032 山西医科大学公共卫生学院 030001 上海市计划生育科学研究所 200032 世界卫生组织生殖健康与研究部 RHA/WHO

目的了解上海市大学生非意愿性行为的发生情况、聚类特征及相关因素。方法采用计算机辅助自填问卷的方法,结合聚类分析、判别分析方法对大学生非意愿性行为进行研究。结果 669名大学女生非意愿性行为可聚类为3类:第一类(589人,占88.04%... 详细信息

目的了解上海市大学生非意愿性行为的发生情况、聚类特征及相关因素。方法采用计算机辅助自填问卷的方法,结合聚类分析、判别分析方法对大学生非意愿性行为进行研究。结果 669名大学女生非意愿性行为可聚类为3类:第一类(589人,占88.04%)为不易发生非意愿性行为组,第二类(63人,占9.42%)为言语性骚扰和一般身体性骚扰高发组,第三类(17人,占2.54%)为除言语性骚扰外,其他非意愿性行为高发;一般身体性骚扰在第二、三类均高发。大学女生的居住地、认为自己时尚和漂亮、吸烟、饮酒、醉酒、离家出走、打架、自杀、看过和被迫看过黄色书刊或DVD等在三类间差别有统计学意义(P<0.05)。结论具有一定个人及行为特征的青少年容易遭受非意愿性行为的侵扰,应针对这些特征因素采取有效措施以减少青少年非意愿性行为的发生。

关键词：非意愿性行为聚类分析青少年

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与中国25年社会科学合作研究的回顾与思考

国际生殖健康／计划生育杂志 2010年第6期29卷 381-384页

作者： iqbal h.shah 左霞云（译）楼超华（审校世界卫生组织生殖健康和研究部瑞士日内瓦不详

shah博士是中国生殖健康科学家的良师益友,25年来他作为一名世界卫生组织(WhO)的官员,悉心扶持并大力推动中国有关生殖健康的社会科学研究,见证了中国生殖健康研究的蓬勃发展。2010年5月shah博士又一次访华,参加有关青少年生殖健康的国... 详细信息

shah博士是中国生殖健康科学家的良师益友,25年来他作为一名世界卫生组织(WhO)的官员,悉心扶持并大力推动中国有关生殖健康的社会科学研究,见证了中国生殖健康研究的蓬勃发展。2010年5月shah博士又一次访华,参加有关青少年生殖健康的国际学术会议,我们对shah博士进行了专访。在访问过程中他生动地描绘了他的访华经历,并具体地回顾与中国科学家亲密合作的历程,更重要的是还对未来发展提出了中肯的建议,下面是shah博士在访谈中讲话的内容摘要。

关键词：中国科学家社会科学合作生殖健康世界卫生组织科学研究博士青少年

Mathematical modeling and simulations of stress mitigation by coating polycrystalline particles in lithium-ion batteries

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Applied Mathematics and Mechanics(English Edition) 2024年第6期45卷 947-962页

作者： N.iqbal J.ChOI S.F.shah C.LEE S.LEE Department of Mechanical Roboticsand Energy EngineeringDongguk University-SeoulSeoul 04620Republic of Korea

A chemo-mechanical model is developed to investigate the effects on the stress development of the coating of polycrystalline Ni-rich LiNixMnyCo_(z)O_(2)(x≥0.8)(NMC)particles with poly(3,4-ethylenedioxythiophene)(PEDOT).The simulation results show that the coating of primary NMC particles significantly reduces the stress generation by efficiently accommodating the volume change associated with the lithium diffusion,and the coating layer plays roles both as a cushion against the volume change and a channel for the lithium transport,promoting the lithium distribution across the secondary particles more ***,the lower stiffness,higher ionic conductivity,and larger thickness of the coating layer improve the stress *** paper provides a mathematical framework for calculating the chemo-mechanical responses of anisotropic electrode materials and fundamental insights into how the coating of NMC active particles mitigates stress levels.

关键词： lithium-ion battery(LIB) polycrystalline particle coating finite element simulation Ni-rich LiNixMnyCo_(z)O_(2)(x>0.8)(NMC)

青少年性相关知识来源的偏好:中国性教育的启示

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国际生殖健康／计划生育杂志 2010年第6期29卷 422-428,433页

作者：张立英 iqbal h.shah 李晓铭尹文强傅继华夏志森 Bonita Stanton 韦恩州立大学医学院儿科预防研究中心美国密歇根州底特律市48202 国家人口计生委科研所世界卫生组织生殖健康与研究部潍坊医学院卫生管理学院山东省疾病预防控制中心美国疾病预防控制中心

目的:探讨分析15～24岁年龄段青少年性教育来源的偏好。方法:本研究所使用的数据来自于一项由世界卫生组织(WhO)资助的项目(WhO第98200号项目)。此项目是在中国东北某城市实施的基于社区为基础的横断面调查。住户样本的抽取采用按规模... 详细信息

目的:探讨分析15～24岁年龄段青少年性教育来源的偏好。方法:本研究所使用的数据来自于一项由世界卫生组织(WhO)资助的项目(WhO第98200号项目)。此项目是在中国东北某城市实施的基于社区为基础的横断面调查。住户样本的抽取采用按规模大小成比例的概率抽样原则,进行3阶段系统抽样设计。共有1319名15～24岁的青少年接受调查,并在参与调查前签署了知情同意书,参与者被告知自愿参加并有权退出调查和跳过其不愿回答的问题。最终有1227条记录进入分析阶段。运用描述性统计和多元Logistic回归分析方法对青少年获取性相关知识的来源偏好和实际获得知识的来源之间的差异进行分析。结果:青少年在过去实际使用的知识来源和其对来源的偏好方面存在差异。"父母","医生","书籍和报纸"和"电视"未能发挥青少年所预期的作用。青少年倾向于将"医生"作为获得"青春期"、"性知识"及"性传播疾病/艾滋病"等知识的主要渠道,而实际使用与来源偏好方面大概有10.2%～11.0%的差距。实际来自于父母对孩子的性教育则比偏好约低0.1%～2.7%。"书籍和报纸"和"电视"作为获得性相关知识的实际来源比偏好低3.3%～7.5%。多因素Logistic回归分析结果显示,年龄、性别、教育水平、工作经历和有无兄弟姐妹等因素影响青少年对获取性知识来源的偏好。20～24岁的男性更倾向于将"电视"作为其获取青春期知识的首选来源(回归系数=0.408,P<0.05),而女性则不倾向于将"电视"作为其首选来源去获取青春期知识、性知识和性传播疾病/艾滋病知识(回归系数分别为-1.305,-0.989和-0.653,P<0.05或P<0.01)。受过大学或研究生教育的被调查者不倾向将"老师"作为首选来源去获取青春期知识及性知识(回归系数分别为-0.544和-0.638,P<0.05)。相对于没有工作经历的被调查者,有工作经历的被调查者更倾向于将"同伴"作为获取有关"性传播疾病/艾滋病"知识的首选来源(回归系数=0.939,P<0.01)。女性更倾向于将"父母"作为首选知识来源获得青春期知识、性知识及性传播疾病/艾滋病知识(回归系数分别为1.649,1.449和1.110,P<0.01或P<0.05)。结论:现况调查表明中国青少年在实际获取性相关知识(即青春期知识,性知识,以及性传播疾病/艾滋病知识)的主要渠道与自己对获取性相关知识的来源偏好方面存在差异。书籍和报纸是青少年获取性相关知识中更喜欢选择的最主要来源,青少年也更喜欢从医生和父母那里得到性教育。目前研究的结果表明青少年不倾向于选择"老师"作为获取性相关知识来源,这为现在和将来的性教育干预方案提供了一些启示。父母和医生在未成年人和青少年性教育中的角色有待加强。学校课堂中,教师传授的性相关知识的内容及教学方法可能有待改善,而且需要学生们来进行评价。对于性教育中社会方面的积极作用,如媒体的作用不容忽视。综合的全方位的性教育需要进一步发展和强化,以满足青少年性知识和生殖健康方面的需要。

关键词：青少年性教育获得性免疫缺陷综合征性传播疾病数据收集

男性暴力行为和经期性交与妻子妇科疾患的关联

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中国计划生育学杂志 2004年第12期12卷 724-727页

作者：刘云嵘张立英 iqbal h.shah 吴思鹍杨元潘钦瑞常勇杰国家人口计生委科研所北京100081 世界卫生组织生殖健康研究部贵州省计划生育科研所

妇女罹患妇科疾患较为普遍.尽管这些疾患是由多种因素决定的,有直接的也有间接的,但很少有研究对与妇科疾患有关的社会和文化背景进行探讨[1],对家庭暴力行为和性暴力与妇科疾患的关系研究得更少.

关键词：妇科疾患性交经期男性行为重型妇女性暴力丈夫家庭暴力

Composite Fractional Trapezoidal Rule with Romberg Integration

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Computer Modeling in Engineering & Sciences 2024年第9期140卷 2729-2745页

作者： iqbal M.Batiha Rania Saadeh iqbal h.Jebril Ahmad Qazza Abeer A.Al-Nana shaher Momani Department of Mathematics Al Zaytoonah University of JordanAmman11733Jordan Nonlinear Dynamics Research Center(NDRC) Ajman UniversityAjman 346United Arab Emirates Department of Mathematics Faculty of ScienceZarqa UniversityZarqa13110Jordan Department of Mathematics Prince Sattam Bin Abdulaziz UniversityAlkharj11942Saudi Arabia Department of Mathematics The University of JordanAmman11942Jordan

The aim of this research is to demonstrate a novel scheme for approximating the Riemann-Liouville fractional integral *** would be achieved by first establishing a fractional-order version of the 2-point Trapezoidal rule and then by proposing another fractional-order version of the(n+1)-composite Trapezoidal *** particular,the so-called divided-difference formula is typically employed to derive the 2-point Trapezoidal rule,which has accordingly been used to derive a more accurate fractional-order formula called the(n+1)-composite Trapezoidal ***,in order to increase the accuracy of the proposed approximations by reducing the true errors,we incorporate the so-called Romberg integration,which is an extrapolation formula of the Trapezoidal rule for integration,into our proposed *** numerical examples are provided and compared with a modern definition of the Riemann-Liouville fractional integral operator to illustrate the efficacy of our scheme.

关键词： Composite fractional Trapezoidal rule Romberg integration

DFT investigation of half-metallic ferromagnetic rare earth based spinels Mgho_(2)Z_(4)(Z=S,Se)

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Journal of Rare Earths 2024年第1期42卷 121-128,I0005页

作者： Maiza Zanib Mumtaz Manzoor N.A.Noor M.Waqas iqbal Mazia Asghar h.h.hegazy A.Laref Department of Physics Riphah International UniversityLahore CampusPakistan Research Centre for Advanced Materials Science King Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Department of Physics Faculty of ScienceKing Khalid UniversityP.O.Box 9004AbhaSaudi Arabia Department of Physics and Astronomy College of ScienceKing Saud UniversityRiyadh11451Saudi Arabia

half-metallic ferromagnetism,mechanical as well as thermoelectric properties for rare earth-based spinels Mgho_(2)Z_(4)(Z=S,Se)were investigated using density functional theory(DFT).Structural optimization was done with Perdew-Burke-Ehrenzorf(PBE)sol-generalized gradient approximation(GGA)to calculate the lattice constant of both spinels comparable to experimental *** addition,Born stability criteria and negative formation energy show that our studied spinels are also structurally and dynamically stable in the cubic *** ferromagnetic(FM)state stability,we also calculated the energy differences among FM,antiferromagnetic(AFM),and non-magnetic(NM)***,Curie temperatures of ferromagnetic phases were also *** used Trans-Blaha improved BeckeJohnson(TB-mBJ)potential functional for electronics as well as magnetic characteristics,which lead to the consistent explanation of half-metallic ferromagnetism,representing the whole band-occupancy in material with exact detail of density of states(DOS).The stable FM state was examined in spinels due to the exchange splitting of ho cation consisting of p-d hybridizations compatible with the result achieved for electronics band structure and ***,spin magnetic moment was explained in terms of anion,cation,and sharing charge on studied *** addition,the calculated thermoelectric properties clearly show that operation range of these systems may be utilized by future experimental works for identifying the potential applications of these systems.

关键词： ho-based spinels DFT simulations Mechanical parameters Electronic properties hM ferromagnetism Figure of merit