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Thermal stability analysis of a satellite-borne optical bench based on quasi-kinematic support

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Earth and Planetary Physics 2023年第1期7卷 119-124页

作者： huan Zhang ChunYu Yu Le Suo WenBo Luo ding Yuan JiaMing Ou Beijing Institute of Spacecraft System Engineering Beijing 100094China Institute of Remote Sensing Satellite China Academy of Space TechnologyBeijing 100094China State Key Laboratory of Lunar and Planetary Sciences Macao University of Science and TechnologyMacaoChina

Macao Science Satellite-1(known as MSS-1)is a low-inclination mission that will be launched at the beginning of *** optical bench is used for accessing high-precision strength and direction measurements of the magnetic *** this paper,we present a thermal stability design for the optical bench based on quasi-kinematic support by kinematic hinges on the *** change in angles with the finite element method(FEM)model modified by thermal deformation test data is *** robustness of the structure is also investigated via the Monte Carlo *** main results are ***,the peak-to-peak value(Vp-p)of the inter-boresight angle is at most 1.24″,and the Vp-p of the inter-boresight angle modification and analysis is no more than 3.13″,both of which are better than those on the Swarm satellites in ***,the 90°fibers of the carbon-reinforced arm need to be strictly controlled during the technological process.

关键词： thermal stability finite element method Monte Carlo

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产业用生物基纤维的发展现状分析

合成纤维 2024年第5期53卷 15-18,51页

作者：丁欢李涵胡建胡进张柳青重庆市计量质量检测研究院重庆401123

生物基纤维作为一种环保型纺织原料,具有性能优异、绿色再生、可生物降解等特性,相对于传统化纤更低碳环保,且具有缓解能源短缺、减少环境污染及降低纺织垃圾生成的优势,引领着纺织纤维的新发展。生物基纤维发展历史虽短,但经济和生态... 详细信息

生物基纤维作为一种环保型纺织原料,具有性能优异、绿色再生、可生物降解等特性,相对于传统化纤更低碳环保,且具有缓解能源短缺、减少环境污染及降低纺织垃圾生成的优势,引领着纺织纤维的新发展。生物基纤维发展历史虽短,但经济和生态效益突出,对于产业用纺织具有重要意义。针对生物基纤维的发展、分类和特性、存在的问题和建议进行了论述。

关键词：生物基纤维现状分类特性

家庭护士食疗理论在超重/肥胖代谢综合征病人饮食干预中的实证研究

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护理研究 2024年第12期38卷 2092-2098页

作者：丁志英韩世范王效华赵奕雯程俊香张欢朱瑞芳山西医科大学护理学院山西030001 山西医科大学食疗科技研究中心山西省食疗和农产品处方产业技术创新战略联盟山西省大健康产教融合重大平台载体与实训基地山西医科大学第一医院山西医学期刊社有限责任公司山西全能家庭护士医药科技有限公司

目的:基于家庭护士食疗理论,探讨优化不同非营养素搭配比例的家庭护士食疗优化方案对超重/肥胖代谢综合征病人调节代谢的效果,验证家庭护士食疗理论抗炎、抗氧化的有效性。方法:招募符合标准的超重/肥胖代谢综合征受试者70例,随机分为... 详细信息

目的:基于家庭护士食疗理论,探讨优化不同非营养素搭配比例的家庭护士食疗优化方案对超重/肥胖代谢综合征病人调节代谢的效果,验证家庭护士食疗理论抗炎、抗氧化的有效性。方法:招募符合标准的超重/肥胖代谢综合征受试者70例,随机分为对照组和干预组,每组各35例。对照组给予富含非营养素的家庭护士食疗方案(家庭护士®专用茶+富含非营养素的个性化饮食),干预组给予家庭护士食疗优化方案(优化非营养素的家庭护士®蛋白复配粉+家庭护士®专用茶+富含非营养素的个性化饮食)。观察干预6周后两组受试者体重、代谢指标、炎症指标及氧化应激指标。结果:干预6周后,两组体重、体质指数和腰围均有下降(P<0.05),干预组的变化值高于对照组。干预6周后,干预组低密度脂蛋白胆固醇、丙氨酸氨基转移酶、收缩压、同型半胱氨酸较干预前改善(P<0.05),两组空腹胰岛素、胰岛素抵抗指数、总胆固醇、三酰甘油、天门冬氨酸氨基转移酶、尿酸均较干预前明显改善(P<0.05)。干预6周后,干预组超敏C⁃反应蛋白、超氧化物歧化酶水平明显改善(P<0.05)。干预组饮食依从性优于对照组。结论:家庭护士食疗优化方案在减重、抗炎和抗氧化应激方面的改善效果优于富含非营养素的家庭护士食疗方案,进一步验证了家庭护士食疗理论的有效性。

关键词：家庭护士食疗理论代餐炎症氧化应激代谢综合征护理

探测激子极化激元在超薄范德华微晶中的光传播

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Chinese Journal of Chemical Physics 2024年第1期37卷 35-42,I0001-I0004,I0117页

作者： Talha Ijaz 边琦曹琰丁皓璇陈晓瑞卢欢杨树邢雪婷方思敏刘孟源张鑫高健智潘明虎陕西师范大学物理学与信息技术学院西安710062 华中科技大学物理学院武汉430074 洛阳师范大学物理与电子信息学院洛阳英国伯明翰大学物理与天文学院伯明翰B152TT 西安文理学院机械与材料工程学院西安710065 陕西师范大学地理与旅游学院西安710119 复旦大学信息科学与工程学院上海200433 珠海复旦创新研究院珠海519000 西北大学物理学院西安710069

激子极化激元是一种准粒子,过渡金属二硫族化合物材料即使在室温下也能支持传播激子极化子,是非常好的纳米光子学研究平台.已有研究表明,通过散射型扫描近场光学显微镜可以对过渡金属二硫族化合物薄片中激子极化激元进行实空间探测,但... 详细信息

激子极化激元是一种准粒子,过渡金属二硫族化合物材料即使在室温下也能支持传播激子极化子,是非常好的纳米光子学研究平台.已有研究表明,通过散射型扫描近场光学显微镜可以对过渡金属二硫族化合物薄片中激子极化激元进行实空间探测,但波导厚度仅限于低至30 nm.本文采用三种不同波长的入射光(1550和1064 nm的近红外以及633 nm的可见光),通过基于原子力显微镜的散射型扫描近场光学显微镜测量,探测到MoS2和WSe2薄片中激子极化子普通横电模式的纳米光学成像.在厚度分别低至~3 nm(相当于4原子层)和~8 nm(相当于12原子层)的超薄MoS2和WSe2薄片上,可以清楚地观察到干涉条纹图案,大大打破了之前的测量厚度限制.当厚度接近几个原子层时,波矢量始终保持在1.6k0~1.7k0左右,而不是理论预言的1k0.这些模式的特性表明,体系是由近乎悬浮的过渡金属二硫族化合物薄片的三层对称波导构成,其对激子极性子的传播产生限域效应.研究结果为探索基于超薄过渡金属二硫族化合物材料的近红外区极化器件提供了深入的理解和开辟了新的途径.

关键词：二维过渡金属二硫族化合物材料散射型扫描近场光学显微镜激子极化子

6种第二代抗精神病药物治疗药物监测结果的回顾性分析

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中国医院药学杂志 2024年第1期44卷 88-93页

作者：丁靖张锁邢欢李璐瑶龚阳泽田秘陈延明杨柳西安市精神卫生中心药学实验室陕西西安710100 西安市精神卫生中心药剂科陕西西安710100 西安市精神卫生中心精神科陕西西安710100 西安市精神卫生中心科教科陕西西安710100

目的:分析6种第二代抗精神病药物治疗药物监测结果,为6种药物治疗精神分裂症的个体化、合理化用药提供参考。方法:采用回顾性分析方法,收集西安市精神卫生中心2020年1-12月在门诊及住院进行6种第二代抗精神病药物治疗药物监测的结果。采... 详细信息

目的:分析6种第二代抗精神病药物治疗药物监测结果,为6种药物治疗精神分裂症的个体化、合理化用药提供参考。方法:采用回顾性分析方法,收集西安市精神卫生中心2020年1-12月在门诊及住院进行6种第二代抗精神病药物治疗药物监测的结果。采用Med Calc 5.2医学统计软件进行数据分析。结果:6种药物监测1次频率的比例均为门诊>住院(P门诊(P0.05)。6种药物及其代谢物中,奥氮平血药浓度在治疗窗比例最高(约为74.98%),氯氮平最低(约为20.53%)。氨磺必利、阿立哌唑、阿立哌唑+脱氢阿立哌唑血药浓度均明显高于共识所推荐参考范围,而氯氮平及去乙基喹硫平血药浓度均明显低于共识所推荐参考范围。结论:在临床实践中,应加强门诊及住院患者治疗药物监测的重视程度,从而为患者实施个体化给药,保障临床用药的安全、有效。

关键词：第二代抗精神病药物治疗药物监测回顾性分析精神分裂症

Large scale synthesis of full-color emissive carbon dots from a single carbon source by a solvent-free method

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Nano Research 2022年第4期15卷 3548-3555页

作者： Hui ding Xuan-Xuan Zhou Zi-Hui Zhang Yun-Peng Zhao Ji-Shi Wei huan-Ming Xiong Key Laboratory of Coal Processing and Efficient Utilization of Ministry of Education and College of Chemical Engineering China University of Mining and TechnologyXuzhou 221116China Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Fudan UniversityShanghai 200433China

Full-color emissive carbon dots(CDs)hold a great promise for various applications,especially in light emitting diodes(LEDs).However,the existing synthetic routes for CDs are carried out in solutions,which suffer from low yields,high pressures,various byproducts,large amounts of waste solvents,and complicated photoluminescence(PL)***,it is necessary to explore large scale synthesis of CDs with high quantum yield(QY)across the entire visible range from a single carbon source by a solvent-free *** this work,a series of CDs with tunable PL emission from 442 to 621 nm,QY of 23%-56%,and production yield within 34%-72%,are obtained by heating o-phenylenediamine with the catalysis of *** characterizations identify that,the differences between these CDs with respect to the graphitization degree,graphitic nitrogen content,and oxygen-containing functional groups,are responsible for their distinct optical properties,which can be modulated by controlling the deamination and dehydrogenation processes during ***,green,yellow,red emissive films,and LEDs are prepared by dispersing the corresponding CDs into polyvinyl alcohol(PVA).All types of white LEDs(WLEDs)with high colorrendering-index(CRI),including warm WLEDs,standard WLEDs,and cool WLEDs,are also fabricated by mixing the red,green,and blue emissive CDs into PVA matrix by the appropriate ratios.

关键词： carbon dots solvent-free synthesis full-color luminescence surface state white light emitting diodes

Hydrodynamic Characteristics of Three-Bucket Jacket Foundation for Offshore Wind Turbines During the Lowering Process

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China Ocean Engineering 2023年第1期37卷 73-84页

作者： ZHANG Pu-yang QI Xin WEI Yu-mo ZHANG Sheng-wei LE Cong-huan ding Hong-yan State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin UniversityTianjin 300072China School of Civil Engineering Tianjin UniversityTianjin 300072China

The three-bucket jacket foundation is a new type of foundation for offshore wind turbine that has the advantages of fast construction speed and suitability for deep water. The study of the hoisting and launching process is of great significance to ensure construction safety in actual projects. In this paper, a new launching technology is proposed that is based on the foundation of the three-bucket jacket for offshore wind turbine. A complete time domain simulation of the launching process of three-bucket jacket foundation is carried out by a theoretical analysis combined with hydrodynamic software Moses. At the same time, the effects of different initial air storage and sea conditions on the motion response of the structure and the hoisting cable tension are studied. The results show that the motion response of the structure is the highest when it is lowered to 1.5 times the bucket height. The natural period of each degree of freedom of the structure increases with the increase of the lowering depth. The structural motion response and the hoisting cable tension vary greatly in the early phases of Stages Ⅰ and Ⅲ, smaller in Stage Ⅱ, and gradually stabilize in the middle and late phases of Stage Ⅲ.

关键词： three-bucket jacket foundation time domain simulation hoisting construction motion response offshore wind turbine

Effects of gold core size on regulating the performance of doxorubicin-conjugated gold nanoparticles

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Nano Research 2018年第6期11卷 3396-3410页

作者： Dongyan Wu Huaisong Wang Xiaoshuang Hou huan Chen Yu Ma Yanglong Hou Jin Hong Ya ding State Key Laboratory of Natural Medicines Department of Pharmaceutical Analysis China Pharmaceutical University Nanjing 210009 China Department of Biochemistry School of Life Science and Technology China Pharmaceutical University Nanjing 210009 China Beijing Key Laboratory for Magnetoelectric Materials and Devices (BKLMMD) Beijing Innovation Center for Engineering Science and Advanced Technology (BIC-ESAT) Department of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China Key Laboratory of Biomedical Functional Materials School of Sciences China Pharmaceutical University Nanjing 210009 China

Studies on the influence of one critical parameter （e.g., size）, targeting a specific disease, while keeping other factors unchanged, are important for improving understanding and application of the molecular design of biomedical nanomaterials. In this study, we used doxorubicin （Dox）-conjugated gold nanoparticles （GNPs） to investigate the effects of the size of the gold core （10, 20, or 60 nm） on the performance of their conjugates. We found that all three conjugates differed slightly in their physicochemical properties, facilitating a direct and accurate assessment of the size effects of GNP-Dox conjugates on their in vitro and in vivo performance. The cytological properties （the cell penetration rate and efficiency, as well as the cytotoxicity） and antitumor performance （the intratumoral penetration, treatment efficacy, and biodistribution） were highly correlated to the size of the inorganic core. Among all test groups, although the conjugate with a 60-nm gold core had the highest drug loading and release efficiency, the conjugate with a 10-nm gold core displayed the best antitumor efficacy toward the liver cancer models. This was because it showed the deepest tumor permeability and the highest tumor cell-killing ability of Dox transported by the relatively small GNPs. This study provides important evidence for better understanding the effect of size on in vitro and in vivo properties of potential therapeutic nanosystems and their structure design.

关键词： size effect doxorubicin-conjugated gold nanoparticles antitumor efficacy tumor penetration liver cancer

ICT-based agricultural advisory services and nitrogen management practices:A case study of wheat production in China

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Journal of Integrative Agriculture 2022年第6期21卷 1799-1811页

作者： ding Ji-ping LI Jing-han LIU Jia-huan ZHANG Wei-feng JIA Xiang-ping College of Economics&Management Northwest A&F UniversityYangling 712100P.R.China Knowledge Technology and Innovation Group Wageningen UniversityWageningen 6706KNThe Netherlands College of Resources and Environmental Sciences China Agricultural UniversityBeijing 100094P.R.China Agricultural Information Institute Chinese Academy of Agricultural SciencesBeijing 100081P.R.China

Excessive use of nitrogen fertilizer in China and its adverse effects on agricultural production have been a national and global *** addition to massive public initiatives to promote sustainable farm practices,grass-rooted innovations are emerging in the niche,many of which take the forms of information and communication technologies(ICT)and digital *** study examines the effects of ICT-based extension services provided by an entrepreneurial startup on adopting sustainable farming *** found no significant reduction in N-fertilizer use for wheat *** the ICT-based services promoted farmers to adapt N-fertilizer use towards site-specific *** business model of the entrepreneurial venture faces great challenges in becoming participatory and financially sustainable.

关键词： venture capital innovations precision farming private-public partnerships nitrogen management