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Chinese Journal of Polymer Science 2016年第12期34卷 1479-1489页

作者： zhi-hao Zhao Fei-fei Wang Man Zhou kai-zhi shen 张杰 College of Polymer Science and Engineer'ing State Key Laboratory of Polymer Materials En~neeringSichuan UniversityChengdu 610065China

High density polyethylene （HDPE） with moderate content of crosslink network （CPE） was successfully prepared through chemical method. Specimens for structural characterization have been molded by conventional injection molding （CIM） and pressure vibration injection molding （PVIM）. Influence of crosslink network on hierarchical morphology distribution and mechanical properties was systematically studied. Polarized light microscopy （PLM） revealed that both CIM and PVIM PE samples have a typical ＂skin-core＂ structure and the thickness of shear layer of CIM PE and PVIM CPE samples obviously increase. Scanning electron microscopy （SEM） showed that shish-kebab structures are clearly observed in shear layer of CIM CPE sample, indicating that the crosslink network can surely improve the formation of shish-kebab structures. Moreover, we suppose that shish-kebab structures emerged in shear and core layer of PVIM CPE sample. Wide- angle X-ray diffraction （WAXD） and small-angle X-ray scattering （SAXS） confirmed that more orientation and shish-kebab structures form even in core layer of PVIM CPE sample, which demonstrated that the hierarchical morphology was apparently altered by periodical shear and crosslink network. Finally, the mechanical properties revealed that this oriented structure increase the tensile strength from 31 MPa of CIM PE sample to 46 MPa of PVIM CPE sample. However, the tensile behavior tended to change from ductile fracture to brittle fracture.

关键词： Shish-kebab Morphology distribution Periodical shear Mechanical properties.

Simultaneously Improving the Tensile and Impact Properties of Isotactic Polypropylene with the Cooperation of co-PP and β-nucleating Agent through Pressure Vibration Injection Molding

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Chinese Journal of Polymer Science 2016年第8期34卷 1001-1013页

作者： Man Zhou Xin-peng Li Ming Jin Chao Xia kai-zhi shen 张杰 College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China

In this article, crystalline morphology and molecular orientation of isotactic polypropylene （iPP）, random copolymerized polypropylene （co-PP） and ,β-nucleating agent （β-NA） composites prepared by pressure vibration injection molding （PVIM） have been investigated via polarized light microscopy, scanning electron microscopy, wide-angle X-ray diffraction and differential scanning calorimetry. Results demonstrated that the interaction between co-PP and iPP molecular chains was beneficial for the mechanical improvement and the introduction of β-NA further improved the toughness of iPP. In addition, after applying the pressure vibration injection molding （PVIM） technology, the shear layer thickness increased remarkably and the tensile strength improved consequently. Thus, the strength and toughness of iPP/co-PP/β-NA composites prepared by PVIM were simultaneously improved compared to those of the pure iPP prepared by conventional injection molding （CIM）： the impact toughness was increased by five times and tensile strength was increased by 9 MPa. This work provided a new method to further enhance the properties of iPP/co-PP composites through dynamic processing strategy.

关键词： Mechanical properties Orientation structures Periodical shear field Morphology.

Vibration Assisted Extrusion of Polypropylene

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Chinese Journal of Polymer Science 2015年第5期33卷 688-696页

作者： Fang-zhen An 高雪芹雷军 Cong Deng Zhong-ming Li kai-zhi shen Department of Polymer Science and Materials State Key Laboratory of Polymer Materials EngineeringSichuan University Analytical and Testing Center Sichuan University

A new homemade apparatus, i.e. vibration assisted extrusion equipment, is employed to extrude polypropylene. Vibration assisted extrusion is based on the application of a specific macroscopic shear vibration field. Reduction of apparent melt viscosity as a function of vibration frequency is measured at different screw speeds and die temperatures. The effect of the process is investigated by performing mechanical tests, differential scanning calorimetry studies, polarized light microscopy and wide-angle X-ray diffraction. It is found that, compared with conventional extrusion, vibration assisted extrusion could effectively improve the rheological properties of PP melt by incorporating an extra shear vibration field. Both the tensile strength and elongation at break increased under the shear vibration field. For vibration assisted extrusion samples, both the melting temperature and crystallinity increased, accompanied by remarkable grain refinement. Vibration assisted extrusion induced a significantly enhanced bimodal orientation with a high fraction of a^＊-oriented α-crystallites, while only a limited improvement in the flow direction orientation. A structural model, i.e. bimodal c-axis and a^＊-axis orientation of PP macromolecular chains, was adopted to explain the experimental results.

关键词： Vibration assisted extrusion Polypropylene Mechanical properties Microstructure

Synergic Enhancement of High-density Polyethylene through Ultrahigh Molecular Weight Polyethylene and Multi-flow Vibration Injection Molding: A Facile Fabrication with Potential Industrial Prospects

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Chinese Journal of Polymer Science 2021年第6期39卷 756-769,I0008页

作者： Rui Hong Yi-Xin Jiang Jie Leng Ming-Jin Liu kai-zhi shen Qiang Fu Jie Zhang College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065China

General-purpose plastics with high strength and toughness have been in great demand for structural engineering *** achieve the reinforcement and broaden the application scope of high-density polyethylene(HDPE),multi-flow vibration injection molding(MFVIM)and ultrahigh molecular weight polyethylene(UHMWPE)are synergistically employed in this ***,the MFVIM has better shear layer control ability and higher fabrication advantage for complex parts than other analogous novel injection molding technologies *** reinforcing effect of various filling times and UHMWPE contents as well as the corresponding microstructure evolution are *** 5 wt%UHMWPE is added,MFVIM process with six flow times thickens the shear layer to the whole *** tensile strength and modulus increase to 2.14 and 1.39 times,respectively,compared to neat HDPE on the premise of remaining 70%impact *** characterizations indicate that the enhancement is attributed to the improvement of shish-kebab content and lamellae compactness,as well as related to the corresponding size distributions of undissolved UHMWPE *** novel injection molding technology with great industrial prospects provides a facile and effective strategy to broaden the engineering applications of HDPE ***,excessive UHMWPE may impair the synergistic enhancement effect,which is also reasonably explained.

关键词： Self-reinforced composites Self-reinforced structure Shear layer thickness Mechanical property

Excellent Heat Affected Zone Toughness Technology Improved by Use of Strong Deoxidizers

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Journal of Iron and Steel Research International 2011年第S2期18卷 141-147页

作者： YANG Jian, ZHU kai, WANG Rui-zhi, shen Jian-guo (Metallurgical Process Department, Research Institute, Baoshan Iron and Steel Co Ltd, Shanghai 201900, China) Baoshan Iron & Steel Co Ltd Res Inst Met Proc Dept Shanghai 201900 Peoples R China

Excellent Heat Affected Zone Toughness Technology Improved by use of Strong Deoxidizers (ETISD Technology) has been developed by Baosteel. When deoxidation of molten steel is conducted at the precisely controlled oxygen concentrations, the formation of the micro-meter inclusions and the nano-meter precipitates in the steel plate can be effectively controlled. During the welding process with high-heat input, the formation of acicular ferrite can be selectively promoted with the aid of micro-meter inclusions; the growth of γ grain can also be selectively restrained by the pinning effect of nano-meter precipitates. After welding with high-heat input of 400 kJ/cm, excellent heat affected zone toughness can be obtained for the steel plates with both of the above microstructures, and the average absorbed energy is greater than 200 J for V notch Charpy impact test at -20℃ .

关键词： high-heat input welding heat affected zone toughness oxide metallurgy inclusions

Repetitive transcranial magnetic stimulation in Alzheimer’s disease:effects on neural and synaptic rehabilitation

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Neural Regeneration Research 2025年第2期20卷 326-342页

作者： Yi Ji Chaoyi Yang Xuerui Pang Yibing Yan Yue Wu zhi Geng Wenjie Hu Panpan Hu Xingqi Wu kai Wang Department of Neurology The First Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders HefeiAnhui ProvinceChina Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health HefeiAnhui ProvinceChina Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefeiAnhui ProvinceChina Department of Psychology and Sleep Medicine The Second Affiliated Hospital of Anhui Medical UniversityHefeiAnhui ProvinceChina

Alzheimer’s disease is a neurodegenerative disease resulting from deficits in synaptic transmission and *** Alzheimer’s disease brain tends to be hyperexcitable and hypersynchronized,thereby causing neurodegeneration and ultimately disrupting the operational abilities in daily life,leaving patients *** transcranial magnetic stimulation is a cost-effective,neuro-modulatory technique used for multiple neurological *** the past two decades,it has been widely used to predict cognitive decline;identify pathophysiological markers;promote neuroplasticity;and assess brain excitability,plasticity,and *** has also been applied to patients with dementia,because it can yield facilitatory effects on cognition and promote brain recovery after a neurological ***,its therapeutic effectiveness at the molecular and synaptic levels has not been elucidated because of a limited number of *** study aimed to characterize the neurobiological changes following repetitive transcranial magnetic stimulation treatment,evaluate its effects on synaptic plasticity,and identify the associated *** review essentially focuses on changes in the pathology,amyloidogenesis,and clearance pathways,given that amyloid deposition is a major hypothesis in the pathogenesis of Alzheimer’s *** mechanisms associated with repetitive transcranial magnetic stimulation procedures and different pathways mediating gene transcription,which are closely related to the neural regeneration process,are also ***,we discuss the outcomes of animal studies in which neuroplasticity is modulated and assessed at the structural and functional levels by using repetitive transcranial magnetic stimulation,with the aim to highlight future directions for better clinical translations.

关键词： Alzheimer’s disease amyloid deposition apoptotic mechanisms biomarker neural regeneration neurodegeneration repetitive transcranial magnetic stimulation synaptic plasticity

跨学科学习背景下小学语文与其他学科的关系属性

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教学与管理 2025年第2期 34-37页

作者：邱志凯重庆市渝北区中央公园小学校重庆401120

《义务教育语文课程标准(2022年版)》首次将跨学科学习纳入学习任务群,旨在打破学科界限,培养学生的综合素养和创新能力。然而,在教学实践中,不少一线语文教师盲目地开展所谓的跨学科学习,致使学科间关系不清、关联不强,整个学习过程混... 详细信息

《义务教育语文课程标准(2022年版)》首次将跨学科学习纳入学习任务群,旨在打破学科界限,培养学生的综合素养和创新能力。然而,在教学实践中,不少一线语文教师盲目地开展所谓的跨学科学习,致使学科间关系不清、关联不强,整个学习过程混乱无序,未能形成解决真实问题的合力,收效甚微。基于此,可以从三个方面厘清跨学科学习背景下小学语文与其他学科的关系属性,提升跨学科学习的效果:一是借力型关系,借靠旁科学习活动,解决语文学习问题;二是助力型关系,依托语文学习活动,解决旁科学习问题;三是协力型关系,协同多科学习活动,解决综合学习问题。

关键词：小学语文跨学科学习借力型关系助力型关系协力型关系

数字克隆人:“跨媒介—交互”中的数字沉浸性研究——基于容积视频捕获技术的探讨

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东北师大学报（哲学社会科学版） 2025年第1期 154-162页

作者：沈嘉熠温凯华东师范大学传播学院上海200241

容积视频捕获(Volumetric Video)是通过光学扫描来捕捉拍摄对象并生成动静两态4D数字影像模型的前沿机器视觉技术之一。与现有的虚拟数字人不同,它生成的数字克隆人是对真人一比一的真实呈现,故而数字克隆人所具有的视觉情感与叙事场景... 详细信息

容积视频捕获(Volumetric Video)是通过光学扫描来捕捉拍摄对象并生成动静两态4D数字影像模型的前沿机器视觉技术之一。与现有的虚拟数字人不同,它生成的数字克隆人是对真人一比一的真实呈现,故而数字克隆人所具有的视觉情感与叙事场景于受众而言具有更深刻的沉浸性。本文从数字克隆人的生成逻辑、技术特性出发,深挖其背后生发的感知体验与情感投射,通过跨媒介叙事分析,结合实验室成果探索其沉浸意境与实践意义,揭示数字克隆人在经历“生产—创造”的过程后将客观形态和主观感性融合在一起,冲破了人与技术、人与审美、人与群体的边界,在虚拟世界中转化为现实的仿真。

关键词：沉浸体验交互叙事容积视频捕获数字克隆人

Cerebral fat embolism following autologous fat injection in facial reconstruction:A case report

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World Journal of Clinical Cases 2025年第2期13卷 50-58页

作者： Xiu-Ying Chen Fa shen Chang Cheng Yu-Han Wang Wen-Chao Cheng De-zhi Yuan Wen Huang Department of Neurology Chongqing Emergency Medical CenterChongqing University Central HospitalChongqing 400000China Department of Neurology Xinqiao HospitalThe Army Medical University(Third Military Medical University)Chongqing 400000China

BACKGROUND Autologous fat injection in facial reconstruction is a common cosmetic *** cerebral fat embolism(CFE)as a complication is rare,it carries serious health *** SUMMARY We present a case of a 29-year-old female patient who developed acute CFE following facial fat filling *** the surgery,the patient experienced symptoms including headache,nausea,vomiting,and difficulty breathing,which was followed by neurological symptoms such as slurred speech and left-sided *** physical examination and auxiliary investigations,including blood tests,head and neck computed tomography angiography,and cranial magnetic resonance diffusion-weighted imaging,were performed upon *** clinical diagnosis was acute cerebral embolism following facial fat filling *** included measures to improve cerebral circulation,dehydration for intracranial pressure reduction,nutritional support,and rehabilitation therapy for left limb *** patient showed a significant improvement in symptoms after 2 weeks of *** recovered left limb muscle strength to grade 5,had clear speech,and experienced complete relief of *** Our case highlights the potential occurrence of severe complications in patients undergoing fat injection in facial *** prevent these complications,plastic surgeons should enhance their professional knowledge and skills.

关键词： Cerebral fat embolism Mechanical thrombectomy Thrombolysis Steroid therapy Symptomatic treatment Case report

Hotspot Analysis of Traditional Drugs in Diabetes Treatment Literature

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Chinese Journal of Integrative Medicine 2021年第4期27卷 304-312页

作者： shen Hui ZHU Wei-kai LU zhi ZHOU Hai-cheng Department of Traditional Chinese Medicine the First Affiliated Hospital of Dalian Medical UniversityDalianLiaoning Province(116011)China Department of Nuclear Medicine the First Affiliated Hospital of Dalian Medical UniversityDalianLiaoning Province(116011)China Department of Endocrinology the First Affiliated Hospital of Dalian Medical UniversityDalianLiaoning Province(116011)China

Objective:To summarize current hotspots and predict the potential trends in traditional drugs of diabetes treatment for further ***:Publications on the application of traditional drugs in diabetes treatment were searched from PubMed without language *** frequent MeSH terms were identified through Bibliographic Item Co-Occurrence Matrix Builder(BICOMB).Biclustering analysis results were visualized utilizing the gCLUTO ***,a strategic diagram was ***:Totally 2,386 relevant publications were obtained from PubMed on November 9th,2018,and 69 highly frequent MeSH terms were *** analysis revealed that these highly frequent MeSH terms were classified into 7 *** calculating the density and centrality of each cluster,strategy diagram was *** 0"Chinese medicine monomers such as antioxidant and hypoglycemic effects"was considered as the most potential research ***:In this study,we found 7 topics related to the application of traditional drugs in diabetes *** molecular mechanisms of Chinese medicine monomers in diabetes could become a potential hotspot with high centricity and low density.

关键词： hotspot traditional drug diabetes bibliometrics MeSH term Chinese medicine