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微型加工设备在高分子材料综合实验教学中的应用

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高分子通报 2023年第7期36卷 894-900页

作者：施镇江朱蕾郑伟龙史同娜朱冰洁吴文华东华大学材料科学与工程学院上海201620

高分子材料的综合实验包含了分子聚合、性能表征、产物加工、样品测试四类实验,产物加工实验是承上启下的关键实验教学环节,有助于提升学生对高分子材料从聚合到样品应用的全流程认知程度,增强学生对理论知识与实际操作相互关系的理解,... 详细信息

高分子材料的综合实验包含了分子聚合、性能表征、产物加工、样品测试四类实验,产物加工实验是承上启下的关键实验教学环节,有助于提升学生对高分子材料从聚合到样品应用的全流程认知程度,增强学生对理论知识与实际操作相互关系的理解,培养学生解决复杂工程问题的能力。某高校材料科学与工程国家级教学实验示范中心在高分子材料综合实验教学课程开设中,将自主研发的微型加工设备引入产物加工实验教学,构建了包含极限式加工工艺研究、对比式配方设计、独立-合作式操作加工设备,串联理论-测试-加工知识的特色实验教学模式。

关键词：综合实验微型加工设备加工工艺配方设计快速制样

西安脉冲堆满功率运行工况内部事件二级概率安全分析

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核动力工程 2019年第2期40卷 80-84页

作者：唐秀欢王宝生朱磊沈志远杨宁单建强西北核技术研究所西安710024 西安交通大学核科学与技术学院西安710049

为评价西安脉冲堆(XAPR)裂变产物释放风险,提出了XAPR二级概率安全分析(PSA)技术要点,分析了事故进程及包容壳响应,基于满功率运行工冴内部事件开展了二级PSA。结果表明,在所有释放类(RC)中,代表成功路径的包容壳完好释放类(RC01)贡献值... 详细信息

为评价西安脉冲堆(XAPR)裂变产物释放风险,提出了XAPR二级概率安全分析(PSA)技术要点,分析了事故进程及包容壳响应,基于满功率运行工冴内部事件开展了二级PSA。结果表明,在所有释放类(RC)中,代表成功路径的包容壳完好释放类(RC01)贡献值占97.52%;在所有非正常释放类中,包容壳密封失效释放类(RC02)贡献仹额为75.81%;RC01发生频率最高,约为4.80×10^(-6)(堆·年)^(-1),核素释放量最小,为10~9～10^(13) Bq数量级;包容壳失效旁路释放类(RC06)核素释放量最大,约为10^(14) Bq数量级,释放频率达1.38×10^(-8)(堆·年)^(-1)。因此,建议在事故时应重点关闭废气特排系统和堆厅排风系统。

关键词：西安脉冲堆(XAPR) 二级概率安全分析(PSA) 研究堆

Advanced strategies for marine antifouling based on nanomaterial-enhanced functional PDMS coatings

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Nano Materials Science 2024年第4期6卷 375-395页

作者： Xiaohui Shi Hao Wei Wenjun Zhou Paul E.D.Soto Rodriguez Cunguo Lin lei Wang Zhijia Zhang School of Materials Science and Chemical Engineering Harbin Engineering University Qingdao Innovation and Development Center of Harbin Engineering University State Key Laboratory for Marin Corrosion and Protection Luoyang Ship Material Research Institute (LSMRI) Instituto de Estudios Avanzados IUDEA Departamento de Física Universidad de La Laguna C/Astrofísico Francisco Sanchez School of Chemistry and Chemical Engineering Harbin Institute of Technology

Marine biofouling seriously affects human marine exploitation and transportation activities, to which marine antifouling(AF) coatings are considered to be the most cost-effective solution. Since the mid-20th century, human beings have dedicated their efforts on developing AF coatings with long cycle and high performance, leading to a large number of non-target organisms? distortion, death and marine environmental pollution. Polydimethylsiloxane(PDMS), is considered as one of the representative environment-friendly AF materials thanks to its non-toxic, hydrophobic, low surface energy and AF properties. However, PDMS AF coatings are prone to mechanical damage, weak adhesion strength to substrate, and poor static AF effect, which seriously restrict their use in the ocean. The rapid development of various nanomaterials provides an opportunity to enhance and improve the mechanical properties and antifouling properties of PDMS coating by embedding *** on our research background and the problems faced in our laboratory, this article presents an overview of the current progress in the fields of PDMS composite coatings enhanced by different nanomaterials, with the discussion focused on the advantages and main bottlenecks currently encountered in this field. Finally, we propose an outlook, hoping to provide fundamental guidance for the development of marine AF field.

关键词： Nanomaterials Antifouling PDMS composites Environment-friendly Marine biofouling

An electron-transfer[Fe_(2)Co_(2)]square complex exhibiting unprecedented wide room-temperature hysteresis

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Science China Chemistry 2024年第4期67卷 1198-1207页

作者： Xin-Hua Zhao Yi-Fei Deng Jia-Tao Chen Jiong Yang Yuan-zhu Zhang Department of Chemistry Southern University of Science and Technology(SUSTech)Shenzhen 518055China

Switchable molecules with magnetic bistability that can function at standard conditions are highly desirable from the perspective of practical *** the last decade,significant progress has been made in modulating thermally induced electrontransfer-coupled spin transition(ETCST)events between diamagnetic{Fe_(LS)^(Ⅱ)(μ-CN)Co_(LS)^(Ⅲ)}and paramagnetic{Fe_(LS)^(Ⅲ)(μ-CN)-Co_(HS)^(Ⅱ)}electron configurations(named LS and HS,respectively,for short)within the Fe/Co mixed-valence cyanometallate ***,we prepared a novel[Fe_(2)Co_(2)]square complex[(pzTp)Fe(CN)_(3)Co(bnbpen)]_(2)[NO_(3)]_(2)·4CH_(3)OH·2.5H_(2)O(1·Solv)and its desolvated phase[(pzTp)Fe(CN)_(3)Co(bnbpen)]_(2)[NO_(3)]_(2)(1),obtained via single-crystal-to-single-crystal(SCSC)*** 1·Solv remaining in the diamagnetic state below room temperature exhibits an irreversible ETCST behavior accompanied by desolvation upon ***,complex 1 displays an unprecedented rate-dependent ETCST behaviour involving with two diamagnetic LS states(a dynamically favoured LS1 state and a thermodynamically favoured LS2state),between which a net one-way transition from LS1 to LS2 is accessible likely via a structural phase transition(SPT)above255 ***,two well separated transition channels(HS?LS1 at around 255 K and HS←→LS2 in the temperature range of 317-350 K)are achieved according to either fast(>20 K/min)or slow rate(<1 K/min),*** a moderate rate of 3 K/min,complex 1 shows a wide hysteresis of 66 K centered at 328 K,the largest yet reported for discrete Fe/Co cyanometallate *** 1 represents the first ETCST example coupled with dynamic SPT,providing a new strategy for manipulating bistability within this fascinating cyanometallate family.

关键词： switchable molecules cyanometallate complexes electron transfer hysteresis structural phase transition

Toward Improved Accuracy in Quasi-Static Elastography Using Deep Learning

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Computer Modeling in Engineering & Sciences 2024年第4期139卷 911-935页

作者： Yue Mei Jianwei Deng Dongmei Zhao Changjiang Xiao Tianhang Wang Li Dong Xuefeng zhu Department of Engineering Mechanics State Key Laboratory of Structural Analysis for Industrial EquipmentDalian University of TechnologyDalian116023China International Research Center for Computational Mechanics Dalian University of TechnologyDalian116023China DUT-BSU Joint Institute Dalian University of TechnologyDalian116023China Department of Automotive Engineering Tongji UniversityShanghai201804China *** SeattleWA98109USA School of Automotive Engineering Dalian University of TechnologyDalian116023China

Elastography is a non-invasive medical imaging technique to map the spatial variation of elastic properties of soft *** quality of reconstruction results in elastography is highly sensitive to the noise induced by imaging measurements and *** address this issue,we propose a deep learning(DL)model based on conditional Generative Adversarial Networks(cGANs)to improve the quality of nonhomogeneous shear modulus *** train this model,we generated a synthetic displacement field with finite element simulation under known nonhomogeneous shear modulus *** the simulated and experimental displacement fields are used to validate the proposed *** reconstructed results demonstrate that the DL model with synthetic training data is able to improve the quality of the reconstruction compared with the well-established optimization ***,we emphasize that our DL model is only trained on synthetic *** might provide a way to alleviate the challenge of obtaining clinical or experimental data in ***,this work addresses several fatal issues in applying the DL technique into elastography,and the proposed method has shown great potential in improving the accuracy of the disease diagnosis in clinical medicine.

关键词： Nonhomogeneous elastic property distribution reconstruction deep learning finite element method inverse problem elastography conditional generative adversarial network

On the Useof Interior Monologueand Narrated M onologue in The Jilting of Gr anny Weather all

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科技视界 2015年第29期 194-194页

作者：朱蕾 Department of Foreign Languages Ankang University

The Jilting of Granny Weatherall is one of Katherine Anne Porter’s most famous and successful short stories which shows her use of the stream-of-consciousness techniques *** thesis tries to focus on the use of interi... 详细信息

关键词： Katherine anne porter Interior monologue Narrated monologue

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声音干预对育肥猪采食行为和生产性能的影响

江西农业大学学报 2022年第1期44卷 151-158页

作者：廖正睿阳娜朱晓彤王丽娜朱磊江青艳华南农业大学动物科学学院/广东省动物营养调控重点实验室广东广州510642 云南楚雄安友畜牧有限公司云南楚雄675200

【目的】旨在研究声音干预对育肥猪采食行为和生产性能的影响。【方法】选择180头日龄相同、体质量接近的杜长大健康育肥猪,随机平均分成4个声音干预试验组和2个对照组,每组3个重复,每个重复10头猪。正式试验前,分别使用不同的声音(育... 详细信息

【目的】旨在研究声音干预对育肥猪采食行为和生产性能的影响。【方法】选择180头日龄相同、体质量接近的杜长大健康育肥猪,随机平均分成4个声音干预试验组和2个对照组,每组3个重复,每个重复10头猪。正式试验前,分别使用不同的声音(育肥猪采食声、育肥猪饥饿叫声、母猪哺乳声音和轻音乐《花好月圆》)对试验组进行诱食训练,以建立相应的条件反射,对照组不做声音干预处理,试验的预试期与正试期均为7 d。正试期间每日在喂料前播放干预声音(时间段为:07:30—07:35,11:00—11:05,14:00—14:05,17:00—17:05),并使用摄像机记录分析各组育肥猪为期3 d的采食、饮水、排泄、争斗、休息、探究、攀爬、操纵、坐立、躺卧和侧卧等11种采食及相关行为的规律;同时,检测不同干预声音对育肥猪平均日增重、日采食量和料肉比等生产性能的影响。【结果】在育肥猪摄食过程中,采用育肥猪采食声和育肥猪饥饿叫声作为干预声源均可有效延长育肥猪的采食时间,并显著提高其平均采食量和日增重(P0.05)。【结论】在育肥猪摄食过程中以育肥猪的采食声和育肥猪饥饿叫声进行声音干预可以有效增加猪的采食量,改善其生产性能。

关键词：声音干预育肥猪采食行为生产性能

女博士身份在媒体报道中的话语建构——以女博士被骗85万的相关报道为例

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山东女子学院学报 2019年第1期 66-74页

作者：朱蕾邢志杰天津商业大学天津300134

一直以来女博士的身份都备受关注。在社会的认知中,她们虽然学历高却往往被贴上一些带有偏见的标签,比如"第三类人""灭绝师太"等。随着社会的进步,人们已逐渐改变把女博士看成是第三种性别的认识,但性别偏见依然存在。以广州医科大学女... 详细信息

一直以来女博士的身份都备受关注。在社会的认知中,她们虽然学历高却往往被贴上一些带有偏见的标签,比如"第三类人""灭绝师太"等。随着社会的进步,人们已逐渐改变把女博士看成是第三种性别的认识,但性别偏见依然存在。以广州医科大学女博士饶源被骗这一案件为例,运用Martin的评价理论和Fairclough话语分析框架,通过分析相关新闻报道的标题、正文及网友评论可以得出以下结论:媒体话语不仅单方面反映了公众对女博士的刻板印象,也会对女博士形象起到积极或消极的建构作用,这就是话语和社会现实之间互为因果的辩证关系。

关键词：女博士身份建构媒体话语批评性话语分析

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铒对氢氧化镍电极高温充放电性能的影响

中国稀土学报 2008年第5期26卷 570-576页

作者：谢守韫方庆成艳简旭宇朱磊王忠尉海军北京有色金属研究总院能源材料与技术研究所北京100088

覆Co(Ⅲ)球镍具有优良的电化学性能,是镍氢动力电池较理想的活性材料,然而其高温性能仍待提高。本文研究了通过不同方式在覆Co(Ⅲ)球镍中添加铒改善镍电极的高温性能。结果表明,采用机械混合在球镍中添加1%(原子分数)Er2O3以及表面化学... 详细信息

覆Co(Ⅲ)球镍具有优良的电化学性能,是镍氢动力电池较理想的活性材料,然而其高温性能仍待提高。本文研究了通过不同方式在覆Co(Ⅲ)球镍中添加铒改善镍电极的高温性能。结果表明,采用机械混合在球镍中添加1%(原子分数)Er2O3以及表面化学沉积方式在球镍表面包覆1%Er(OH)3的电极70℃时1C充/放电效率分别比无添加的电极提高11.7%和12.6%。循环伏安测试表明,铒的添加提高了镍电极在高温下的析氧过电位,明显提高了电极在高温环境下的充电效率。

关键词：镍氢电池氢氧化镍电极稀土添加剂表面包覆高温性能