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International Journal of Minerals,Metallurgy and Materials 2023年第3期30卷 515-524页

作者： Yuanyuan Zhou Zhongyi Bai Xiangyang Yang Wei Liu Bingbing Fan Zhikai Yan xiaoqin guo Henan Key Laboratory of Aeronautical Materials and Application Technology School of Material Science and EngineeringZhengzhou University of AeronauticsZhengzhou 450046China School of Chemical&Environmental Engineering China University of Mining&Technology(Beijing)Beijing 100083China School of Material Science and Engineering Zhengzhou UniversityZhengzhou 450001China

With the gradually increasing protection awareness about electromagnetic pollution,the demand for absorbing materials with renewability and environmental friendliness has attracted widespread *** this work,composites consisting of straw-derived biochar combined with NiCo alloy were successfully fabricated through high-temperature carbonization and subsequent hydrothermal *** electromagnetic parameters of the porous biocarbon/NiCo composites can be effectively modified by altering their NiCo content,and their improved absorbing performance can be attributed to the synergy effect of magnetic-dielectric *** exceptional reflection loss of-27.0 dB at 2.2 mm thickness and an effective absorption bandwidth of 4.4 GHz(11.7-16.1 GHz)were *** results revealed that the porous biocarbon/NiCo composites could be used as a new generation absorbing material because of their low density,light weight,excellent conductivity,and strong absorption.

关键词： straw-derived biochar microwave absorption interfacial polarization magnetic loss bimetallic NiCo impedance matching

Facile synthesis of yolk-shell Ni@void@SnO2（Ni3Sn2） ternary composites via galvanic replacement/Kirkendall effect and their enhanced microwave absorption properties

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Nano Research 2017年第1期10卷 331-343页

作者： Biao Zhao xiaoqin guo Wanyu Zhao Jiushuai Deng Bingbing Fan Gang Shao Zhongyi Bai Rui Zhang Provincial Key Laboratory of Aviation Materials and Application Technology Zhengzhou University of Aeronautics Zhengzhou 450046 China School of Mechatronics Engineering Zhengzhou University of Aeronautics Zhengzhou 450046 China School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001 China State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Faculty of Land Resource Engineering Kunming University of Science and Technology Kunming 650093 China

Yolk-shell ternary composites composed of a Ni sphere core and a SnO2（Ni3Sn2） shell were successfully prepared by a facile two-step method. The size, morphology, microstructure, and phase purity of the resulting composites were characterized by scanning electron microscopy, energy dispersive X-ray spectroscopy, transmission electron microscopy （TEM）, high-resolution TEM, selected-area electron diffraction, and powder X-ray diffraction. The core sizes, interstitial void volumes, and constituents of the yolk-shell structures varied by varying the reaction time. A mechanism based on the time-dependent experiments was proposed for the formation of the yolk-shell structures. The yolk-shell structures were formed by a synergistic combination of an etching reaction, a galvanic replacement reaction, and the Kirkendall effect. The yolk-shell ternary SnO2 （Ni3Sn2）@Ni composites synthesized at a reaction time of 15 h showed excellent microwave absorption properties. The reflection loss was found to be as low as -43 dB at 6.1 GHz. The enhanced microwave absorption properties may be attributed to the good impedance match, multiple reflections, the scattering owing to the voids between the core and the shell, and the effective complementarities between the dielectric loss and the magnetic loss. Thus, the yolk-shell ternary composites are expected to be promising candidates for microwave absorption applications, lithium ion batteries, and photocatalysis.

关键词： yolk-shelLNi@void@SnO2(Ni3Sn2) galvanic replacement Kirkendall effect microwave absorption

Dependence of electromagnetic wave absorption properties on the topography of Ni anchoring on reduced graphene oxide

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Chinese Chemical Letters 2021年第2期32卷 870-874页

作者： Luyang Liang Zhaoyang Li Zhongyi Bai Yuezhan Feng xiaoqin guo Jianmin Ma Chuntai Liu Key Laboratory of AdvancedεMaterials Processing Mold Ministry of EducationNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China Henan Key Laboratory of Aeronautical Materials and Application Technology School of Material Science and EngineeringZhengzhou University of AeronauticsZhengzhou 450046China Key Laboratory for Micro-/Nano-Optoelectronic Devices Ministry of EducationSchool of Physics and ElectronicsHunan UniversityChangsha 410022China

Specific topographic Ni anchoring on reduced graphene oxide(rGO) composites show an astronomical potential as effective wave absorbers due to the synergistic electromagnetic loss ***,Ni/rGO composites with different topography were successfully prepared via hydrothermal in-situ reduction *** structure and morphology characteristics revealed that particle-like,chain-like,coin-like and flower-like Ni were closely anchored onto rGO,*** electromagnetic wave absorption(EMA) performance revealed that chain-like Ni/rGO exhibited the optimal reflection loss of-43.7 dB with a thickness of 1.8 mm as well as the EAB of 6.1 GHz at 2.0 mm among all samples due to the good impedance match and the synergistic dielectric and magnetic ***,one conclusion can be drawn that excellent magnetic coupling effect and impedance matching were the main reasons for significantly improving the EMA *** the systematic dependence of morphology on EMA,this work provides a perspective for designing high-performance absorbing materials.

关键词： Ni/rGO Morphology structure Magnetic coupling effect Synergistic effect Electromagnetic wave absorption

Development and Practice of Integrated Nursing Model NNN Link for Breastfeeding Clinical Nursing Model as a Whole

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Open Journal of Nursing 2016年第2期6卷 88-93页

作者： xiaoqin guo Lecturer of the Graduate School Shanxi Medical University Taiyuan China

Objective: To establish breastfeeding clinical holistic nursing model used in clinical nursing and teaching, it is possible to improve nurses and nursing students to master knowledge of breastfeeding, analysis, judgment, decision-making and the ability to care-related issues, promoting pure improve breastfeeding rates. Method: 1) The North American Nursing Diagnosis Nursing Association (NANDA), Nursing Outcomes Classification (NOC) and Nursing Classification (NIC) link (NNN link) clinical clues reasoning to determine the contents of the questionnaire were used. Then, the Delphi method to care was used. 2) The survey questionnaire was designed. The content included the clinical holistic nursing care model in breastfeeding and the model’s use situation. 3) Questionnaire survey: in the national midwifery care industries, volunteers were collected who were willing to use the breastfeeding clinical holistic nursing care model in the nursing work. We issued 98 questionnaires and took back 76 valid questionnaires. Results: The construction of the breastfeeding clinical holistic nursing model includes 9 nursing diagnoses which contain the breastfeeding effective, the lack of knowledge, the decision conflicts, the risk of breast tenderness, the risk of cracked nipple, the invalid hazard occurring in breastfeeding, the risk of caregiver role strain, the risk of breast feeding jaundice and the ineffective community coping, 18 nursing outcomes and 64 nursing measures. In the composition of breastfeeding after clinical holistic nursing model in clinical practice, 100% of obstetric nurses think that the breastfeeding nursing model can promote the nursing staff to care patients according to the nursing process, can help nurses to analyze, evaluate, make decision, and care about breastfeeding related problems, as well as can promote the mother’s milk feeding rate. Conclusion: The establishment of the breastfeeding nursing model provides a learning material for obstetric breast-feed

关键词： Breastfeeding Clinical Global Care Model Nursing Diagnosis Care Outcomes Nursing

Structure-dependent electromagnetic wave absorbing properties of bowl-like and honeycomb TiO_(2)/CNT composites

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Journal of Materials Science & Technology 2022年第14期109卷 105-113页

作者： Hua Jian Qinrui Du Qiaoqiao Men Li Guan Ruosong Li Bingbing Fan Xin Zhang xiaoqin guo Biao Zhao Rui Zhang Henan Key Laboratory of Aeronautical Materials and Application Technology School of Material Science and EngineeringZhengzhou University of AeronauticsZhengzhou 450046China School of Chemical Engineering Northwest UniversityXi’an 710069China Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Zhengzhou Research Institute for Abrasives&Grinding Co. Ltd.Zhengzhou 450001China School of Material Science and Engineering Luoyang Institute of Science and TechnologyLuoyang 471023China

Materials that can efficiently absorb electromagnetic waves(EMWs)are required to deal with electromagnetic *** design appears to be an efficient way to improve the EMW-absorption performance of such materials,particularly when adjustment of the constitution or mixing ratio is *** this study,bowl-like and honeycomb titanium dioxide/carbon nanotube(TiO_(2)/CNT)composites with different CNT contents were fabricated using the methods of hierarchical and mixing vacuum-assisted filtration,*** to the honeycomb structure,the bowl-like structure simultaneously facilitated greater interfacial polarization and conduction loss in favor of dielectric polarization,and augmented multiple *** high porosity of the honeycomb structure was conducive to optimizing the impedance matching *** bowl-like TiO_(2)/CNT composite exhibited a minimum reflection loss(RL_(min))of-38.6 dB(1.5 mm)with a wide effective absorption band(EAB;<-10 dB)of4.2 GHz,while the honeycomb TiO_(2)/CNT composite showed an RLminof-34.8 dB(2.1 mm)with an EAB of 4.3 *** required mixing ratio in the matrix was only 15 wt%,outperforming that of the most closely related ***,both the bowl-like and honeycomb TiO_(2)/CNT composites are ideal candidates for light-weight and highly efficient EMW-absorbing materials.

关键词： Bowl-like structure Honeycomb structure TiO_(2)/CNT composite Electromagnetic wave absorption

Self-Healing Liquid Metal Magnetic Hydrogels for Smart Feedback Sensors and High-Performance Electromagnetic Shielding

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Nano-Micro Letters 2023年第6期15卷 112-125页

作者： Biao Zhao Zhongyi Bai Hualiang Lv Zhikai Yan Yiqian Du xiaoqin guo Jincang Zhang Limin Wu Jiushuai Deng David Wei Zhang Renchao Che School of Microelectronics Fudan UniversityShanghai 2000433People’s Republic of China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsAcademy for Engineering&TechnologyFudan UniversityShanghai 200438People’s Republic of China Key Laboratory of Separation and Processing of Symbiotic‑Associated Mineral Resources in Non‑Ferrous Metal Industry School of Chemical&Environmental EngineeringChina University of Mining&Technology(Beijing)Beijing 100083People’s Republic of China Institute of Optoelectronics Fudan UniversityShanghai 200433People’s Republic of China Henan Key Laboratory of Aeronautical Materials and Application Technology School of Material Science and EngineeringZhengzhou University of AeronauticsZhengzhou 450046HenanPeople’s Republic of China Zhejiang Laboratory Hangzhou 311100People’s Republic of China Inner Mongolia University Hohhot 010021People’s Republic of China

Hydrogels exhibit potential applications in smart wearable devices because of their exceptional sensitivity to various external ***,their applications are limited by challenges in terms of issues in biocompatibility,custom shape,and ***,a conductive,stretchable,adaptable,self-healing,and biocompatible liquid metal GaInSn/Ni-based composite hydrogel is developed by incorporating a magnetic liquid metal into the hydrogel framework through crosslinking polyvinyl alcohol(PVA)with sodium *** excellent stretchability and fast self-healing capability of the PVA/liquid metal hydrogel are derived from its abundant hydrogen binding sites and liquid metal ***,owing to the magnetic constituent,the PVA/liquid metal hydrogel can be guided remotely using an external magnetic field to a specific position to repair the broken wires with no need for manual *** composite hydrogel also exhibits sensitive deformation responses and can be used as a strain sensor to monitor various body ***,the multifunctional hydrogel displays absorption-dominated electromagnetic interference(EMI)shielding *** total shielding performance of the composite hydrogel increases to~62.5 dB from~31.8 dB of the pure PVA hydrogel at the thickness of 3.0 *** proposed bioinspired multifunctional magnetic hydrogel demonstrates substantial application potential in the field of intelligent wearable devices.

关键词： EMI shielding Liquid metal Hydrogel Self-healing properties Strain sensor Magnetic patterning

China and the United States Should Build A New Type of Major Powers Relations——A Study on China’s U.S. Policy Thinking since the New Century

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Peace 2013年第2期 20-29页

作者： Wang Gonglong guo xiaoqin China-America Study Center Shanghai Party SchoolCPC

Since the reform and opening-up to the outside world, China has formed a series of guidelines and policies towards the United States, which are the theoretical foundation of China’s U.S. policy thinking in the New Century. Entering the new century, the international situation has undergone profound and complicated changes, the national strength gap between China and the United States has narrowed, their common interests have expanded, differences and contradictions have increased. Therefore, China stands for both countries to adhere to the direction of developing cooperative partnership, respect each other, abide by the promises, seek equal and mutual benefits and win-win cooperation, and mutually respect each others core interests. The future development of China-U.S. relations still face many challenges and China’s U.S. policy thinking needs to keep abreast with the times.

关键词： A Study on China’s U.S China and the United States Should Build A New Type of Major Powers Relations Policy Thinking since the New Century

Multiple splicing types of OsRIX4,an RAD21 homolog in rice (Oryza sativa L.)

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Chinese Science Bulletin 2007年第11期52卷 1468-1474页

作者： DONG HaiTaoi guo xiaoqin PEI YanXi DAI ChengEn FANG YongQi TU QiChao ZHUANG JieYun ZHAO Dong ZHENG KangLe LI DeBao Bioinforrnatics and Gene Network Research Group Biotechnology Institute Zhejiang University Hangzhou 310029 China National Center for Rice Improvement China National Rice Research Institute Hangzhou 310006 China

The present paper describes multiple splicing types of OsRIX4,an RAD21 homolog in rice. A type of alternative splicing (AS),distinctive from all five previously known splicing types,was identified in which interior sequences of a constitutive exon could be spliced. Translation of the transcript produced with this AS type was demonstrated at the protein level. Expression of multiple transcripts was organ specific. The expression abundance of transcripts,OsRIX4-4 and OsRIX4-5,was positively correlated with fertility in rice. The splicing type identified in the present study provided the means to further un-derstand and define different mRNA splicing types in plants and suggested that post-transcription processing of mRNA and its regulation mechanism are complex.

关键词：信使核糖核酸多重叠加交替叠加性质

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信任与利益:伙伴关系管理过程的理论分析

社会主义研究 2016年第2期 144-149页

作者：郭小琴复旦大学国际关系与公共事务学院

本文试图对伙伴关系管理过程进行一个理论的阐释。通过归纳,本文认为伙伴关系运行的机制是相互促进,两个变量共同利益和信任水平通过相互促进的机制影响伙伴关系的运行。四个"理想型"伙伴关系都存在自身特有的互动动态。当前中国外交正... 详细信息

本文试图对伙伴关系管理过程进行一个理论的阐释。通过归纳,本文认为伙伴关系运行的机制是相互促进,两个变量共同利益和信任水平通过相互促进的机制影响伙伴关系的运行。四个"理想型"伙伴关系都存在自身特有的互动动态。当前中国外交正在努力构建全球伙伴关系网络,本文构建的伙伴关系管理理论框架对此有一定的启示。即范围上的全球性要求在伙伴关系管理中厘清全球利益与共同利益的交汇与区别,结构上的网络性要求在伙伴关系管理中注重信任网络的建设。

关键词：伙伴关系管理利益目标信任程度

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金刚石磨具钎焊工艺研究

金刚石与磨料磨具工程 2007年第3期27卷 40-42页

作者：郭晓琴郑州航空工业管理学院郑州450015

采用Ni-Cr合金粉末做钎料,利用800W YAG固体激光器,适当控制钎焊工艺,实现了金刚石与钢基体的牢固焊接。分析了钎料与金刚石之间的界面反应,探讨了钎料与金刚石界面处碳化物的形成机理,进行了磨削实验。结果表明,当激光输入焦比能为0.05... 详细信息

采用Ni-Cr合金粉末做钎料,利用800W YAG固体激光器,适当控制钎焊工艺,实现了金刚石与钢基体的牢固焊接。分析了钎料与金刚石之间的界面反应,探讨了钎料与金刚石界面处碳化物的形成机理,进行了磨削实验。结果表明,当激光输入焦比能为0.05-0.06 kJ/mm^2时,金刚石磨粒与基体之间有着较高的结合强度,磨粒的利用率高,金刚石磨粒在整个加工过程中没有出现脱落的情况。

关键词：钎焊金刚石磨具磨损