检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

基于感性设计方法的战斗机座舱概念设计研究

包装工程 2024年第4期45卷 33-39页

作者：杨舒婷张学永李珍曹淮吴磊毛非一中国航空工业集团公司沈阳飞机设计研究所沈阳110035 华中科技大学机械科学与工程学院武汉430074

目的基于感性设计方法对战斗机座舱开展设计研究,探究战斗机座舱的工业设计方法,以提升飞行员的操作感受和用户体验。方法对相关文献进行梳理,厘清感性设计的概念和理论来源;对装备感性设计和飞机座舱的工业设计方法进行文献回顾;针对... 详细信息

目的基于感性设计方法对战斗机座舱开展设计研究,探究战斗机座舱的工业设计方法,以提升飞行员的操作感受和用户体验。方法对相关文献进行梳理,厘清感性设计的概念和理论来源;对装备感性设计和飞机座舱的工业设计方法进行文献回顾;针对以技术为主导的战斗机座舱设计,其外观设计受到功能的严格限制。通过构建基于创意感性的战斗机座舱感性设计方法,将“感性”思维融入战斗机座舱的工业设计程序,通过风格意象、主题分析、主题造型化等设计阶段产出设计方案,最后进行验证评估。结论根据感性设计方法对战斗机座舱开展概念设计案例实践,验证了感性设计方法的可行性,为战斗机座舱工业设计提供相应的参考建议。

关键词：战斗机座舱设计方法感性设计意象

基于PVAR模型的广西乡村旅游-新型城镇化-生态环境的动态关系研究——基于广西14个地级市面板数据

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

运筹与模糊学 2024年第3期14卷 707-719页

作者：廖方丽徐庆娟杨舒婷南宁师范大学数学与统计学院广西南宁

广西乡村旅游资源丰富,生态环境优越,但随着新型城镇化的发展,它们三者之间的影响关系引起了人们的广泛关注。本文基于2010~2021年广西14个地级市乡村旅游、新型城镇化和生态环境的相关面板数据,对广西乡村旅游、新型城镇化和生态环境... 详细信息

广西乡村旅游资源丰富,生态环境优越,但随着新型城镇化的发展,它们三者之间的影响关系引起了人们的广泛关注。本文基于2010~2021年广西14个地级市乡村旅游、新型城镇化和生态环境的相关面板数据,对广西乡村旅游、新型城镇化和生态环境之间的动态关系进行实证研究。首先,构建了三个系统的综合评价指标体系,利用熵权法得到三个系统的综合评价指数。在此基础上,利用平稳性检验、PVAR模型、格兰杰因果关系检验、脉冲响应函数分析、方差分解等进行实证研究。结果显示,广西乡村旅游是新型城镇化的单向格兰杰原因,广西新型城镇化是生态环境的单向格兰杰原因。广西乡村旅游、生态环境与新型城镇化均为相互促进关系。最后,提出了一些政策建议。

关键词：广西乡村旅游新型城镇化生态环境 PVAR模型格兰杰因果关系脉冲响应函数

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

酶解糖化滇黄精多糖的结构表征及其免疫活性

现代食品科技 2024年第4期40卷 104-112页

作者：黄俊源袁晚晴苏艺杨淑婷黎攀陈建萍杜冰华南农业大学食品学院广东广州510642 香港大学李嘉诚医学院中医药学院中国香港999077

该论文研究了酶解糖化下的滇黄精多糖结构和免疫活性,以探究酶解糖化下的黄精多糖结构特征及免疫活性的影响。结果表明,酶解糖化黄精多糖(SPKP)的多糖和还原糖含量分别为94.05%、4.1%。多糖结构分析表明,SPKP的红外光谱在1016~1147和931... 详细信息

该论文研究了酶解糖化下的滇黄精多糖结构和免疫活性,以探究酶解糖化下的黄精多糖结构特征及免疫活性的影响。结果表明,酶解糖化黄精多糖(SPKP)的多糖和还原糖含量分别为94.05%、4.1%。多糖结构分析表明,SPKP的红外光谱在1016~1147和931 cm-1处有吡喃糖特征吸收峰;单糖组成及摩尔比为阿拉伯糖:半乳糖:葡萄糖:甘露糖:果糖=0.032:0.117:0.419:0.048:0.383,重均分子量(Mw)为3820 u。甲基化结果表明SPKP主要的糖苷键连接方式为(→4-Glcp-1→),占比47.1%,分支度为34.1%结合碘碘化钾和刚果红实验结果可以推测SPKP是一种含有复杂分支的三股螺旋多糖。RAW264.7细胞实验结果表明,酶解糖化黄精多糖在比较广的浓度范围内无毒性,均能促进细胞增殖,且有较高的细胞吞噬能力和NO水平,因此可以推测SPKP具有较好的免疫活性,且与其多糖结构有一定的关系。该研究可以为多糖与免疫活性的构效关系以及黄精新炮制方法的开发提供一定参考。

关键词：滇黄精酶解糖化多糖结构免疫活性

维普期刊数据库博看期刊

Type Ⅱ collagen-positive progenitors are important stem cells in controlling skeletal development and vascular formation

在线全文

学校读者我要写书评

暂无评论

Bone Research 2022年第4期10卷 741-756页

作者： Xinhua Li shuting yang Gongsheng Yuan Dian Jing Ling Qin Hu Zhao Shuying yang Department of Basic and Translational Sciences School of Dental MedicineUniversity of PennsylvaniaPhiladelphiaPA 19104USA Department of Orthopedics Shanghai General HospitalShanghai Jiao Tong UniversitySchool of MedicineShanghai 200080P.R.China Department of Spinal Surgery East HospitalTongji UniversitySchool of MedicineShanghai 200120China Department of Restorative Sciences College of DentistryTexas A&M UniversityDallasTXUSA Department of Orthopedic Surgery Perelman School of MedicineUniversity of PennsylvaniaPhiladelphiaPA 19104USA The Penn Center for Musculoskeletal Disorders School of MedicineUniversity of PennsylvaniaPhiladelphiaPA 19104USA Center for Innovation&Precision Dentistry School of Dental MedicineSchool of Engineering and Applied SciencesUniversity of PennsylvaniaPhiladelphiaPA 19104USA

Type II collagen-positive(Col2^(+))cells have been reported as skeletal stem cells(SSCs),but the contribution of Col2^(+)progenitors to skeletal development both prenatally and postnatally during aging remains *** address this question,we generated new mouse models with ablation of Col2^(+)cells at either the embryonic or postnatal *** embryonic ablation of Col2^(+)progenitors resulted in the death of newborn mice due to a decrease in skeletal blood vessels,loss of all vertebral bones and absence of most other bones except part of the craniofacial bone,the clavicle bone and a small piece of the long bone and ribs,which suggested that intramembranous ossification is involved in long bone development but does not participate in spine *** postnatal ablation of Col2^(+)cells resulted in mouse growth retardation and a collagenopathy *** tracing experiments with embryonic or postnatal mice revealed that Col2^(+)progenitors occurred predominantly in the growth plate(GP)and articular cartilage,but a limited number of Col2^(+)cells were detected in the bone ***,the number and differentiation ability of Col2^(+)progenitors in the long bone and knee joints decreased with increasing *** fate-mapping study further revealed Col2^(+)lineage cells contributed to,in addition to osteoblasts and chondrocytes,CD31^(+)blood vessels in both the calvarial bone and long ***,almost all blood vessels in calvarial bone and 25.4%of blood vessels in long bone were Col2^(+)lineage ***,during fracture healing,95.5%of CD31^(+)blood vessels in long bone were Col2^(+)lineage *** vitro studies further confirmed that Col2^(+)progenitors from calvarial bone and GP could form CD31^(+)vascular ***,this study provides the first demonstration that intramembranous ossification is involved in long bone and rib development but not spine ***2^(+)progenitors contribute to CD31^(+)skeletal blood vessel format

关键词： progenitor skeletal healing

Synthesis and electrochemical properties of Th-doped LiMn_2O_4 powders for lithium-ion batteries

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2006年第z1期25卷 58-61页

作者： LI Chao FAN Yanliang LI Shuzhong XIE Bing BI Lei yang shuting Department of Applied Chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Engineering Research Centre for New Power Source Materials of Henan Province Xinxiang 453002 China Department of Applied Chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Engineering Research Centre for New Power Source Materials of Henan ProvinceXinxiang 453002 China Department of Applied Chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Department of Applied Chemistry College of Material Science and Chemical Engineering Zhengzhou Institute of Light Industry Zhengzhou 450002 China Department of Chemical Engineering College of Chemistry and Environmental Science Henan Normal University Xinxiang 453002 China

To improve the cycle performance of eco-friendly and cost-effective spinel LiMn2O4 as the Li secondary batteries, the Th-doped LiThxMn1-xO4 spinel powers were synthesized by solid-state method. The starting materials, Li2CO3, MnO2 and Th(NO3)4·4H2O, were mixed uniformly using a traditional ball milling, which resulted in a uniform particle size distribution in the mixed powers. Tests of X-ray diffraction, SEM, impedance spectra and charge-discharge were carried out for LiThxMn1-xO4 cathode materials. Results show that the synthesized LiTh0.01Mn1.99O4 material exhibits standard spinel structure, regular particle morphology and excellent property of charge-discharge for big current. The capacity retention of the material modified by doping Th is more than 85.1% of the first discharge specific capacity of 111.5 mAh·g-1 after 20 cycles at the current rate 1C, while the pristine LiMn2O4 is only 57% of the first discharge specific capacity of 110.2 mAh·g-1 after the same cycles at the same current rate.

关键词： lithium ion batteries Th-doped electrochemical properties AC impedance

在线全文

学校读者我要写书评

暂无评论

超导电缆的研究现状与前景分析

电力与能源 2024年第1期45卷 1-7页

作者：杨舒婷蓝耕王平羽周婕国网上海市电力公司电缆分公司上海200122

超导电缆相较于传统电缆具有线损低、容量大、占地小、低碳环保等优势,可以解决输电走廊紧张、输电线路损耗高等问题,是未来输配电线路的重要替代方向。概述了超导电缆的分类、结构和技术优势;介绍了超导电缆的发展历程和典型应用工程,... 详细信息

超导电缆相较于传统电缆具有线损低、容量大、占地小、低碳环保等优势,可以解决输电走廊紧张、输电线路损耗高等问题,是未来输配电线路的重要替代方向。概述了超导电缆的分类、结构和技术优势;介绍了超导电缆的发展历程和典型应用工程,并综述了超导电缆未来的主要研究方向。对超导电缆和交联聚乙烯电缆从经济性、安全性和碳排放三个方面作对比分析,基于以上分析总结了超导电缆可能的应用场景,并展望了超导电缆未来的发展前景。

关键词：超导电缆低碳环保碳排放输电走廊

Construction of robust coupling interface between MoS2 and nitrogen doped graphene for high performance sodium ion batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2020年第9期29卷 435-442,I0013页

作者： Yun Qiao Jiawei Wu Xiaoguang Cheng Yudong Pang Zhansheng Lu Xiangdong Lou Qingling Li Jin Zhao shuting yang yang Liu School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007HenanChina School of Environment and Chemical Engineering Shanghai UniversityShanghai 200444China School of Physics Henan Normal UniversityXinxiang 453007HenanChina

As a layered inorganic material,MoS2 has recently attracted intensive attention as anode for sodium ion batteries(SIBs).However,this anode is plagued with low electronic conductivity,serious volume expansion and sluggish kinetics,resulting in capacity fading and poor rate ***,we develop an interface engineering strategy to substantially enhance the sodium storage performance of MoS2 by incorporating layered MoS2 into three dimensional N-doped graphene *** strong coupling-interface between MoS2 and N-doped graphene scaffold can not only stabilize the MoS2 structure during sodium insertion/extraction processes,but also provide plenty of anchor sites for additional surface sodium *** 3D MoS2@N-doped graphene composite as anode for SIBs performs an outstanding specific capacity of 667.3 mA h g^-1 at 0.2 A g^-1,a prolonged stability with a capacity retention of 94.4%after 140cycles and excellent rate capability of 445 mA h g^-1 even at a high rate of 10 A g^-*** combined experiment and theoretical simulation to further disclose the interaction between MoS2 and N-doped graphene,adsorption and diffusion of sodium on the composite and the corresponding sodium storage *** study opens a new door to develop high performance SIBs by introducing the interface engineering technique.

关键词： Sodium-ion batteries Anode Interface engineering MoS2 Energy storage

DOPA-IGF-1 Coated HA/PLGA Microspheres Promoting Proliferation and Osteoclastic Differentiation of Rabbit Bone Mesenchymal Stem Cells

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2019年第3期35卷 514-520页

作者： LIU Guomin LI Yalong yang shuting ZHAO Yian LU Tiancheng JIA Wenyuan JI Xuan LUO Yungang Department of Prosthdontics the Hospital of StomatologyJilin UniversityChangchun 130021P.R.China Department of Stomatology the Second Hospital cf Jilin UniversityChangchun 130041P.R.China Life Sciences College Jilin Agricultural UniversityChangchun 130118P.R.China Jilin Provincial Changbai Mountain Medicine Anti-tumor Engineering Center the Second Hospital of Jilin UniversityChangchun130041P.R.China

To explore the ability of dihydroxyphenylalanine-insulin-like growth factor-1 (DOPA-IGF-1) coated hydroxyapatite/poly(lactic-co-glycolic acid)(HA/PLGA) microspheres to promote the proliferation and osteoclastic differentiation of rabbit bone mesenchymal stem cells(rBMSCs), HA/PLGA microspheres with different HA content (10%, 30%, 50%, mass fraction) were prepared by electrospinning method and HA/PLGA microspheres with 50% HA were coated with IGF-1 and DOPA-IGF-1, respectively. They were co-cultured with rBMSCs, respctively. Cell counting kit-8(CCK-8) detection, confocal laser scanning microscopy(CLSM), alkaline phosphatase(ALP) detection and osteogenesis related genes COL IA1, Runx2 and bone morphogenetic protein-2(BMP-2) detection were conducted to detect the proliferation activity, cell morphology, differentiation ability and the expression level of osteogenesis-related genes of cells cultured on all microspheres groups. The results showed that rBMSCs proliferation increased in an HA content dependent manner, and cells proliferated more in the IGF-1 coated and DOPA-IGF-1 coated groups, in particular in DOPA-IGF-1 coated group, and the differences were more remarkable over time (P<0.05). HA/PLGA microspheres promoted the proliferation and osteogenic differentiation of rBMSCs, and DOPA-IGF-1 coating enhanced the proliferation and osteogenic differentiation of rBMSCs.

关键词： Biomaterial Electrospinning Biocompatibility Hydrophilic polymer

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

牛支原体黏附相关因子的研究进展

畜牧与兽医 2024年第1期56卷 140-144页

作者：杨舒婷李媛王茗雨檀雅洁梁家豪荆婷婷付磊储岳峰兰州大学甘肃兰州730000 中国农业科学院兰州兽医研究所/动物疫病防控全国重点实验室甘肃兰州730000

牛支原体是严重危害世界养牛业的重要病原之一,可导致牛患肺炎、乳腺炎、关节炎等疾病,在全球范围内流行,给全球养牛业造成了较大经济损失。牛支原体的致病机理尚不清楚,黏附是牛支原体感染宿主并影响宿主细胞膜功能的关键步骤,而黏附... 详细信息

牛支原体是严重危害世界养牛业的重要病原之一,可导致牛患肺炎、乳腺炎、关节炎等疾病,在全球范围内流行,给全球养牛业造成了较大经济损失。牛支原体的致病机理尚不清楚,黏附是牛支原体感染宿主并影响宿主细胞膜功能的关键步骤,而黏附相关因子是牛支原体黏附不同宿主细胞的主要参与者,与牛支原体的致病性相关。本文主要论述了牛支原体黏附相关因子及其作用研究进展,以期为牛支原体致病机制的阐释提供参考。

关键词：牛支原体黏附相关因子致病机制

维普期刊数据库博看期刊