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Large-scale synthesis of nickel sulfide micro/nanorods via a hydrothermal process

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International Journal of Minerals,Metallurgy and Materials 2015年第7期22卷 762-769页

作者： Peng-fei Yin xiang-yu han Chao Zhou Chuan-hui Xia Chun-lian Hu Li-li Sun College of Science Chongqing Jiaotong University Department of Materials Science Chongqing Jiaotong University Department of Physics Third Military Medical University

Rhombohedral-phase NiS micro/nanorods were synthesized on a large scale through a hydrothermal method using NiCl2·6H2O and thiourea crystals as starting precursors. Recrystallized thiourea was observed to play an important role in the formation of mi- cro/nanosized rods and flower-like structures. The molar ratio and reaction temperature of the precursors influenced the morphology and phase of NiS products. Pure rhombohedral NiS micro/nanorods were obtained on a large scale when the molar ratio between NiCl2·6H2O and thiourea crystals was fixed at 2：1, and the mixture was heated at 250℃ for 5 h. Flower-like NiS nanostructures were formed when the molar ratio between NiCl2·6H2O and thiourea crystals was maintained at 1：1. The Raman and Fourier-transform infrared （FTIR） spectra of the as-prepared rhombohedral NiS micro/nanorods were collected, and their magnetic properties were investigated. The results showed that the FTIR absorption peaks of the as-prepared product are located at 634 cm^-1 and their Raman peaks are located at 216 and 289 cm^-1; the as-prepared NiS micro/nanorods exhibited weak ferromagnetic behavior due to the size effect.

关键词： nickel sulfide nanorods hydrothermal synthesis optical properties magnetic measurement

Composition of Wheat Rhizosphere Antagonistic Bacteria and Wheat Sharp Eyespot as Affected by Rice Straw Mulching

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Pedosphere 2010年第4期20卷 505-514页

作者： CHEN Huai-Gu CAO Qi-Guang XIONG Gui-Lin LI Wei ZhanG Ai-xiang yu han-Shou WANG Jin-Sheng College of Plant Protection Nanjing Agricultural University Nanjing 210095 (China) Institute of Plant Protection Jiangsu Academy of Agricultural Nanjing 210014 (China) College of Life Sciences Nanjing Agricultural University Nanjing 210095 (China)

To assess the effect of rice straw mulching on changes of antagonistic bacteria and the incidence of wheat sharp eyespot, a multi-year field study was performed to compare unmulched plots and the plots mulched with rice straw for two or three years. Bacterial and fungal populations were evaluated in the cultures prepared from the wheat rhizosphere and bulk soils. Rice straw mulching increased the number of pseudomonas colony forming units in wheat rhizosphere and bulk soils. The proportion of total bacteria that were fluorescent pseudomonads was higher in mulched than in unmulched soil. Bacterial isolates antagonistic to Rhizoctonia cerealis were identified using an inhibition zone test. A series of these isolates were typed by partial sequencing of the 16S rRNA gene. Pseudomonads had higher antagonistic activity against R. cerealis than other species, and more than 80% of rhizosphere fluorescent pseudomonads were antagonistic to R. eerealis. The disease indices were lower in the mulched plots than in the unmulched control. These results suggest that rice straw mulching in a rice-wheat rotation increases the number of fluorescent pseudomonads. Additionally, these fluorescent pseudomonads may contribute to the control of wheat sharp eyespot.

关键词： antagonistic microorganisms disease control fluorescent pseudomonads Rhizoctonia cerealis rice-wheat rotation

Effects of solid solution treatment and cooling on morphology of LPSO phase and precipitation hardening behavior of Mg-Dy-Ni alloy

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Transactions of Nonferrous Metals Society of China 2017年第11期27卷 2381-2389页

作者： Li-tao yuAN Guang-li BI yuan-dong LI Jing JIANG yu-xiang han Da-qing FANG Ying MA State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of Technology Lanzhou 730050 China College of Materials Science and Engineering Taiyuan University of Science and Technology Taiyuan 030024 China

Effects of solid solution treatment and cooling on the morphology of long period stacking order(LPSO)phase and precipitation hardening behavior of Mg?2Dy?0.5Ni(molar fraction,%)alloy were *** of the as-cast alloy mainly consisted ofα-Mg phase,bamboo-like Mg12DyNi phase with LPSO structure distributed between dendrites and small amounts of cubic Dy *** solid solution treatment at565oC for12h and subsequent different cooling conditions,dot-shaped,block,fine lamellar and rod-shaped LPSO phases precipitate in Mg matrix,*** continuous cooling conditions(furnace and air cooling),the fine lamellar LPSO phase generally forms in grain interior and its volume fraction increases and block LPSO phase coarsens with increasing cooling *** discontinuous cooling conditions(air cooling after furnace cooling to415and265°C),the dot-shaped LPSO grows into the rod-shaped phase,which results in an decrease of cooling hardening behavior of alloy.

关键词： Mg.Dy.Ni alloy LPSO phase microstructure precipitation hardening

Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao xiang Feng Gao yu-Gui Peng Peng Wu Zong-Lin Li Xue-Feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

Catalytic Performance of Carbon Smoke over Ag-LSCF Composite Catalysts

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 30-34页

作者： GUO Guanlun han Ming LU Shaomin yu Jing JU Hongling 无 Hubei Key Laboratory of Advanced Technology for Automotive Components&Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan University of TechnologyWuhan 430070China College of Mechanical and Transportation Southwest Forestry UniversityKunming 650000China

To improve the catalytic performance of La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3)(LSCF)towards carbon soot,we utilized the impregnation method to incorporate Ag into the prepared LSCF *** conducted a series of characterization tests and evaluated the soot catalytic activity of the composite catalyst by comparing it with the LaCoO_(3) group,LaFeO_(3) group,and catalyst-free *** results indicate that the Ag-LSCF composite catalyst exhibits the highest soot catalytic activity,with the characteristic temperature values of 376.3,431.1,and 473.9℃at 10%,50%,and 90%carbon soot conversion,*** values are 24.8,20.2,and 23.1℃lower than those of the LSCF *** also shows that LSCF can improve the catalytic activity of soot after compounding with Ag,and reflects the necessity of using catalysts in soot combustion *** characterization and BET test show that Ag-LSCF has more abundant surface-adsorbed oxygen species,larger specific surface area and pore volume than LSCF,which also proves that Ag-LSCF has higher soot catalytic activity.

关键词： metallic composites carbon smoke oxidation perovskite catalyst soot

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基于高阶π演算的构件演化行为研究

计算机科学 2017年第3期44卷 202-208页

作者：何海洋李强余祥韩翔宇电子工程学院合肥230037

用形式化的方法分析软件演化过程中构件的行为已成为目前构件开发中的研究热点。为了满足构件演化过程中行为建模形式化的需要,建立了一种基于高阶π演算的构件演化行为分析方法。对构件演化行为进行分类,将顺序图表示的演化请求转换成... 详细信息

用形式化的方法分析软件演化过程中构件的行为已成为目前构件开发中的研究热点。为了满足构件演化过程中行为建模形式化的需要,建立了一种基于高阶π演算的构件演化行为分析方法。对构件演化行为进行分类,将顺序图表示的演化请求转换成高阶π演算进程表达式,通过高阶π演算的语法语义和等价理论等数学基础对演化行为进行推演,并检测演化中是否存在死锁问题。最后通过实例对该方法进行分析说明,从而验证了该方法的可行性和有效性。

关键词：构件演化演化行为高阶π演算

等离子喷涂Li_(0.5)Fe_(2.5)O_4防护涂层及其表征

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中国表面工程 2016年第6期29卷 107-112页

作者：祝志祥韩钰陈新马壮杨长龙张宏宇全球能源互联网研究院先进输电技术国家重点实验室北京102211 全球能源互联网研究院电工新材料研究所北京102211 北京理工大学材料学院北京100081 国网辽宁省电力有限公司沈阳110004

以Li_2CO_3和Fe_2O_3粉末为原料,通过高温固相煅烧、喷雾造粒及热处理制备出纯净单相的Li_(0.5)Fe_(2.5)O_4热喷涂粉体,采用等离子喷涂技术在Q235钢表面沉积出Li_(0.5)Fe_(2.5)O_4铁氧体涂层,并研究其微观组织结构、物理电气和耐腐蚀性... 详细信息

以Li_2CO_3和Fe_2O_3粉末为原料,通过高温固相煅烧、喷雾造粒及热处理制备出纯净单相的Li_(0.5)Fe_(2.5)O_4热喷涂粉体,采用等离子喷涂技术在Q235钢表面沉积出Li_(0.5)Fe_(2.5)O_4铁氧体涂层,并研究其微观组织结构、物理电气和耐腐蚀性能。结果表明,热喷涂制备的Li_(0.5)Fe_(2.5)O_4涂层表面致密均匀,平均孔隙率为4.1%,且与钢基体具有良好的界面结合,结合强度平均值为27.6 MPa,涂层电阻率为2.14×10^(-5)Ω·m,且涂层耐电化学腐蚀性能良好,3.5%NaCl溶液介质中的平均腐蚀速率约为0.003 7 mm/a,显示等离子喷涂制备的高质量Li_(0.5)Fe_(2.5)O_4涂层可较好满足接地材料防护涂层对其耐蚀和导电性方面的要求,可作为一种有效的腐蚀防护措施应用在传统钢质接地材料防腐工程中。

关键词：等离子喷涂防护铁氧体接地材料

Flexible Graphene Field‑Effect Transistors and Their Application in Flexible Biomedical Sensing

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Nano-Micro Letters 2025年第2期17卷 252-313页

作者： Mingyuan Sun Shuai Wang Yanbo Liang Chao Wang yunhong Zhang Hong Liu yu Zhang Lin han Institute of Marine Science and Technology Shandong UniversityQingdao 266237ShandongPeople’s Republic of China State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100ShandongPeople’s Republic of China School of Integrated Circuits Shandong UniversityJinan 250100ShandongPeople’s Republic of China Shandong Engineering Research Center of Biomarker and Artificial Intelligence Application Jinan250100ShandongPeople’s Republic of China

Flexible electronics are transforming our lives by making daily activities more *** to this innovation are field-effect transistors(FETs),valued for their efficient signal processing,nanoscale fabrication,low-power consumption,fast response times,and ***,known for its exceptional mechanical properties,high electron mobility,and biocompatibility,is an ideal material for FET channels and *** combination of graphene and FETs has given rise to flexible graphene field-effect transistors(FGFETs),driving significant advances in flexible electronics and sparked a strong interest in flexible biomedical ***,we first provide a brief overview of the basic structure,operating mechanism,and evaluation parameters of FGFETs,and delve into their material selection and patterning *** ability of FGFETs to sense strains and biomolecular charges opens up diverse application *** specifically analyze the latest strategies for integrating FGFETs into wearable and implantable flexible biomedical sensors,focusing on the key aspects of constructing high-quality flexible biomedical ***,we discuss the current challenges and prospects of FGFETs and their applications in biomedical *** review will provide valuable insights and inspiration for ongoing research to improve the quality of FGFETs and broaden their application prospects in flexible biomedical sensing.

关键词： Flexible Graphene Field-effect transistor Wearable Implantable Biosensor

含不同初始织构的Mg−Gd−Y−Zn−Zr合金热轧板材的显微组织和力学性能

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Transactions of Nonferrous Metals Society of China 2024年第6期34卷 1804-1816页

作者：陈汉胡璋韩宇翔陈韬刘楚明陈志永中南大学材料科学与工程学院长沙410083

通过光学显微镜、扫描电子显微镜、电子背散射衍射、透射电子显微镜和拉伸试验研究含不同初始织构的Mg−4.7Gd−3.4Y−1.2Zn−0.5Zr(质量分数,%)合金热轧板材的显微组织和力学性能。结果表明,初始织构为0001//RD(板材轧向)的板材获得相对较... 详细信息

通过光学显微镜、扫描电子显微镜、电子背散射衍射、透射电子显微镜和拉伸试验研究含不同初始织构的Mg−4.7Gd−3.4Y−1.2Zn−0.5Zr(质量分数,%)合金热轧板材的显微组织和力学性能。结果表明,初始织构为0001//RD(板材轧向)的板材获得相对较粗的晶粒和双峰基面织构;而初始织构为0001//TD(板材横向)的板材动态再结晶程度更高,因此,获得更细的晶粒尺寸和较强的0001//ND基面织构。此外,在两种板材中均发现沿RD拉长的不规则形状LPSO相,这种LPSO相导致各向异性的承载强化行为,并进一步引起板材的屈服各向异性。对强化机理的分析表明,晶界强化对轧制板材的强化效果最好。由于具有较小的晶粒尺寸和LPSO相带来的承载强化效果,初始织构为0001//TD的板材在RD方向上获得最高的屈服强度。

关键词： Mg−Gd−Y−Zn−Zr合金织构 LPSO相力学性能强化机理