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Growth and micromagnetic simulation of magnetite nanoparticles

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Science China(Physics,Mechanics & Astronomy) 2011年第7期54卷 1208-1212页

作者： zhao sufen SUN Qian WANG RongMing HAN YuNan Key Laboratory of Micro-nano Measurement-Manipulation and Physics (Ministry of Education) and Department of Physics Beijing University of Aeronautics and Astronautics Beijing 100191 China School of Physics Hunan University of Science and Technology Xiangtan 411201 China

Magnetite nanoparticles with different sizes and different assemblies were synthesized via hydrothermal *** simulation shows the magnetite nanocubes with different sizes have different energy states,which determines the assembly *** nanocubes with the side length of 30-60 nm tended to be dispersed while both nanochains and dispersed nanoparticles were found to grow for the nanocubes with the side length less than 30 nm,which can be explained in the fact that the above two assembly modes have very close *** assembly mode of nanocubes with the size bigger than 60 nm is generally nanorings consisting of connected inter-grown nanocubes and the nanocubes are no longer single *** simulations are consistent with the experimental results.

关键词： Fe3O4 nanoparticles micromagnetic simulation assemble magnetization distribution

Heterogeneous Network Embedding: A Survey

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Computer Modeling in Engineering & Sciences 2023年第10期137卷 83-130页

作者： sufen zhao Rong Peng Po Hu Liansheng Tan School of Computer Science Wuhan UniversityWuhan430072China School of Computer Science Central China Normal UniversityWuhan430079China

Real-world complex networks are inherently heterogeneous;they have different types of nodes,attributes,and *** recent years,various methods have been proposed to automatically learn how to encode the structural and semantic information contained in heterogeneous information networks(HINs)into low-dimensional embeddings;this task is called heterogeneous network embedding(HNE).Efficient HNE techniques can benefit various HIN-based machine learning tasks such as node classification,recommender systems,and information ***,we provide a comprehensive survey of key advancements in the area of ***,we define an encoder-decoder-based HNE model ***,we systematically overview,compare,and summarize various state-of-the-art HNE models and analyze the advantages and disadvantages of various model categories to identify more potentially competitive HNE *** also summarize the application fields,benchmark datasets,open source tools,andperformance evaluation in ***,wediscuss open issues and suggest promising future *** anticipate that this survey will provide deep insights into research in the field of HNE.

关键词： Heterogeneous information networks representation learning heterogeneous network embedding graph neural networks machine learning

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大红鹳整体骨骼标本的制作与形态学特征

野生动物学报 2024年第1期45卷 103-109页

作者：赵岩李曦刘金鹏胥哲李辉国欣欣陈希鑫普天春赵素芬北京动物园管理处北京100044 中央美术学院北京100105

结合传统及改进工艺,采用剥皮、去除内脏、剔肉、拆解、消化、脱脂、漂白、装架、保存等工序制作成年雄性大红鹳(Phoenicopterus roseus)整体骨骼标本。制作时,选用市售84消毒液水溶液进行软组织消化,并在剔肉时保留腕关节、肘关节、膝... 详细信息

结合传统及改进工艺,采用剥皮、去除内脏、剔肉、拆解、消化、脱脂、漂白、装架、保存等工序制作成年雄性大红鹳(Phoenicopterus roseus)整体骨骼标本。制作时,选用市售84消毒液水溶液进行软组织消化,并在剔肉时保留腕关节、肘关节、膝关节等轴关节处的肌腱组织,在装架完毕后小心剔除,以确保大面积关节接触面或细碎籽骨的精确组装。制作的骨骼标本形态完整、外观莹白,易于长期保存,适宜推广应用。同时在制作过程中,对标本进行系统的形态学观察和描述,发现大红鹳不仅具备鸟类骨骼轻便和坚固的共性,其下颌骨、颈椎及下肢骨也具备适应饮食和涉水生活习性的特性,收集的相关骨骼参数为未来鸟类的骨骼系统研究提供基础数据。

关键词：大红鹳整体骨骼标本标本制作形态学特征

Micromagnetic Simulation of Demagnetization Curves for Single-Phase Nanocrystalline Nd-Fe-B Magnet

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Journal of Materials Science & Technology 2000年第2期16卷 107-108页

作者： Hanmin JIN, sufen zhao and Xuefeng WANG (Department of Physics, Jinn University, Changchun 130012, China) Department of Physics Jilin University Changchun 130012 China

The demangetization curves for the nanocrystalline Nd-Fe-B magnets of the stoichiometric composition were calculated by using the finite element technique of micromagnetism. The curve, especially iHc become smaller with increase of *** most small iHc from a series of the curves along different field directions is closer to that for N=∞. iHc increases with increase of L, and are close cr some what smaller than that the experimental values should be.

关键词： Simulation Nd Fe

基于SolidWorks的风机部件新型工装的简述

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机械管理开发 2024年第3期39卷 244-245,248页

作者：贾晓辉许嘉言赵素芬长江三峡集团江苏能源投资有限公司江苏南京210000

以江苏某海上风电场项目风机各部件的起吊和预拼为参照工程实例,详细介绍了金风科技风机叶片、轮毂、发电机和塔筒等部件进行起吊与预拼时采用新型工装的情况,为国内同类型工程的施工和安装提供了一种较为新颖、安全的起吊和预拼方式,... 详细信息

以江苏某海上风电场项目风机各部件的起吊和预拼为参照工程实例,详细介绍了金风科技风机叶片、轮毂、发电机和塔筒等部件进行起吊与预拼时采用新型工装的情况,为国内同类型工程的施工和安装提供了一种较为新颖、安全的起吊和预拼方式,具有推广应用价值。

关键词： SolidWorks 风机部件新型工装起吊支座

嘉宝果提取物/壳聚糖复合膜的制备及应用研究

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塑料包装 2024年第3期34卷 36-40,25页

作者：洪鹏蓝凤霞李剑赵素芬陈新中山火炬职业技术学院广东中山528436 广东药科大学广东中山528458 中山正和色彩资源有限公司广东中山528436

以嘉宝果果皮为原料,利用超临界流体萃取技术对嘉宝果果皮多酚进行了提取。采用溶液共混法制备不同嘉宝果提取物质量分数的壳聚糖复合膜,并对其红外光谱、透光率、溶解度、厚度、抗氧化性能等进行了测试。最后,将该复合膜应用于圣女果保... 详细信息

以嘉宝果果皮为原料,利用超临界流体萃取技术对嘉宝果果皮多酚进行了提取。采用溶液共混法制备不同嘉宝果提取物质量分数的壳聚糖复合膜,并对其红外光谱、透光率、溶解度、厚度、抗氧化性能等进行了测试。最后,将该复合膜应用于圣女果保鲜,通过失重率检测了贮藏期间圣女果的品质变化。结果表明该复合膜在圣女果保鲜上具有可行性,也为嘉宝果提取物与壳聚糖复合膜的开发和应用提供参考。

关键词：嘉宝果提取物壳聚糖复合膜抗氧化性能保鲜

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基于纸包装生物基涂层的研究进展

塑料包装 2024年第4期34卷 25-29页

作者：陈新刘俊禧方锴张钰铃赵素芬中山火炬职业技术学院广东中山528436 仲恺农业工程学院广东广州51000

随着人们环保意识的逐渐提高,环保友好、节能减排已成为全球人们关注的重点,在限塑令、禁塑令背景下,以纸代塑是实现环境保护和可持续发展的主要方式。但由于纸基材料表面疏松多孔的结构,小分子的水和气体很容易通过孔隙渗透和润湿纤维... 详细信息

随着人们环保意识的逐渐提高,环保友好、节能减排已成为全球人们关注的重点,在限塑令、禁塑令背景下,以纸代塑是实现环境保护和可持续发展的主要方式。但由于纸基材料表面疏松多孔的结构,小分子的水和气体很容易通过孔隙渗透和润湿纤维,不能满足包装材料的阻隔功能要求,同时纸张没有热封性能,无法通过加热自粘制袋的方式达到工业化生产的要求,且其在机械强度方面难以与塑料相媲美。本文主要从防潮性、阻气性、热封性和机械强度四个角度综述了生物基涂层改性纸基包装材料的研究。

关键词：以纸代塑生物基涂层

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圈养珍稀鹤类长疟原虫流行情况研究

野生动物学报 2024年第2期45卷 347-353页

作者：蒋鹏郑常明姜瑞婕杜余礼卢岩刘燕张增帅赵京孙冬婷赵素芬贾婷北京动物园圈养野生动物技术北京市重点实验室北京100044

2017—2021年,收集5家饲养单位12种圈养珍稀鹤类的284份样品进行血孢子虫病的流行调查。采用血孢子虫细胞色素b(Cyt b)基因套式PCR检测和Blast序列比对,结果显示:血孢子虫基因序列与已知长疟原虫(Plasmodium elongatum)DENVID02进化支... 详细信息

2017—2021年,收集5家饲养单位12种圈养珍稀鹤类的284份样品进行血孢子虫病的流行调查。采用血孢子虫细胞色素b(Cyt b)基因套式PCR检测和Blast序列比对,结果显示:血孢子虫基因序列与已知长疟原虫(Plasmodium elongatum)DENVID02进化支匹配度达到100%;结合虫体形态学,确定该寄生虫所属类群为长疟原虫。长疟原虫在黑颈鹤(Grus nigricollis)、白鹤(Leucogeranus leucogeranus)、丹顶鹤(Grus japonensis)、白头鹤(***)、灰鹤(***)和白枕鹤(Antigone vipio)6种鹤类中被检出,检出率为8.45%(24/284)。此外,感染长疟原虫DENVID02进化支的鹤类个体未出现明显的临床症状,所有感染个体均未采取防治措施。在跟踪监测中,发现病原体在鹤类体内消失或呈跨年度携带现象,推测鹤类可能对长疟原虫DENVID02具有先天抵抗力。

关键词：珍稀鹤类长疟原虫流行疾病防控

A rare case of giant panda cancer:Pancreatic ductal adenocarcinoma

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Animal Models and Experimental Medicine 2022年第6期5卷 582-586页

作者： Yunsheng Wang Maohua Xia Xiangxiang Li Xinxin Guo Yan Lu sufen zhao Tianchun Pu Wildlife Pathological diagnosis Laboratory Department of Veterinary HospitalBeijing ZooBeijingChina Beijing Key Laboratory of Captive Wildlife Technologies Beijing ZooBeijingChina Wildlife Clinical Laboratory Department of Veterinary HospitalBeijing ZooBeijingChina

Pancreatic ductal adenocarcinoma(PDAC)is a highly malignant cancer of the digestive system common among ***,it is rarely reported in wild *** 2018,a giant panda died in the Beijing *** subsequent histological observation of the pancreas,it was discovered that the glandular epithelial cells had lost the pancreatic acinar structure,tubular areas with obvious structure in the pancreas,and the ductal epithelium was substituted by high columnar mucus *** staining showed that there were several fibrous tissue proliferative reactions around the ductal adenocarcinoma and immunohistochemical staining revealed that CK7 and CK19 were positively expressed in the pancreatic ***,the pathological diagnosis indicated that the panda had *** this paper,the panda’s living conditions and pathological diagnosis results are examined,with the aim of providing a reference point for the future diagnosis of wild animal tumors.

关键词： giant panda pancreatic ductal adenocarcinoma(PDAC) the pathological diagnosis of wild animals