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Journal of Iron and Steel Research International 2020年第8期27卷 952-963页

作者： Yang-huan zhang Wei zhang Ze-ming Yuan Wen-gang Bu Yan Qi Shi-hai Guo Key Laboratory of Integrated Exploitation of Baiyun Obo Multi-Metal Resources Inner Mongolia University of Science and TechnologyBaotou 014010Inner MongoliaChina Department of Functional Material Research Central Iron and Steel Research InstituteBeijing 100081China

Both element substitution and surface modification were utilized to enhance the electrochemical performances of Mg–Ni-based alloys. Nanocrystalline and amorphous -Mg1?xCexNi0.9Al0.1 (x?=?0–0.08)?+?50 wt.% Ni hydrogen storage alloys were synthesized through mechanical milling. The sample alloys show excellent activation property and have good electrochemi-cal hydrogenation and dehydrogenation property at normal temperature. The discharge capacity has a peak value with Ce content varying which is 461.6 mAh/g for 10-h milled alloy, while that of -Ce0.04 alloy augments from 352.6 to 536.9 mAh/g with milling time extending from 5 to 30 h. Cycle stability is conspicuously improved with Ce content and milling duration augment. To be specific, when cycle number is fixed at 100, the capacity retention rate augments from 41% to 72% after Ce dosage rising from 0 to 0.08 for the 10-h milled alloy and from 58% to 76% after milling duration extending from 5 to 30 h for -Ce0.06 alloy. Additionally, the electrochemical kinetics of the alloys own peak values with Ce proportion varying;however, they always rise with milling duration extending.

关键词： Mg–Ni-based alloy Ce replacing Mg Surface modification Mechanical milling Electrochemical performance

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辽宁省稻瘟病菌群体交配型分布及育性差异

植物病理学报 2024年第4期54卷 679-686页

作者：闫晗陈立杰韩涛董海徐晗褚晋缪建锟杨皓李志强辽宁省农业科学院植物保护研究所沈阳110161 沈阳农业大学植物保护学院沈阳110886 东港市示范繁殖农场丹东118300

稻瘟病菌在田间具有丰富的多态性。在辽宁省5个粳稻主产区采集并分离了336株稻瘟菌单孢菌株,并对其交配型分布和育性能力差异进行了检测,分析稻瘟病菌的变异机制。通过PCR技术检测交配型,发现所有供试菌株均属于单一交配型MAT1-2,群体... 详细信息

稻瘟病菌在田间具有丰富的多态性。在辽宁省5个粳稻主产区采集并分离了336株稻瘟菌单孢菌株,并对其交配型分布和育性能力差异进行了检测,分析稻瘟病菌的变异机制。通过PCR技术检测交配型,发现所有供试菌株均属于单一交配型MAT1-2,群体遗传中出现了显著的交配型偏离现象。采用对峙培养杂交法,与标准菌株P9(MAT1-1)配对检测育性能力,发现所有供试菌株的平均可育性菌株比例为37.50%,平均形成子囊壳38.8个,可育菌株比例整体偏低,存在地域性分布规律,稻瘟病菌群体育性可能受积温影响。本研究首次明确了辽宁省稻瘟菌交配型分布和育性能力地域性差异。鉴于交配型的单一和可育菌株的缺乏,辽宁省粳稻主产区田间流行的稻瘟菌多是无性繁殖构成群体。

关键词：辽宁省稻瘟病菌交配型育性

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Designing All‑Solid‑State Batteries by Theoretical Computation:A Review

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Electrochemical Energy Reviews 2023年第1期6卷 790-829页

作者： Shu zhang Jun Ma Shanmu dong Guanglei Cui Qingdao Industrial Energy Storage Research Institute Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101ShandongChina

All-solid-state batteries(ASSBs)with solid-state electrolytes and lithium-metal anodes have been regarded as a promis-ing battery technology to alleviate range anxiety and address safety issues due to their high energy density and high *** the fundamental physical and chemical science of ASSBs is of great importance to battery *** confirm and supplement experimental study,theoretical computation provides a powerful approach to probe the thermody-namic and kinetic behavior of battery materials and their interfaces,resulting in the design of better *** this review,we assess recent progress in the theoretical computations of solid electrolytes and the interfaces between the electrodes and electrolytes of *** review the role of theoretical computation in studying the following:ion transport mechanisms,grain boundaries,phase stability,chemical and electrochemical stability,mechanical properties,design strategies and high-throughput screening of inorganic solid electrolytes,mechanical stability,space-charge layers,interface buffer layers and dendrite growth at electrode/electrolyte ***,we provide perspectives on the shortcomings,challenges and opportunities of theoretical computation in regard to ASSBs.

关键词： Theoretical computation All-solid-state batteries Solid electrolyte Electrode-electrolyte interface

高强TB9钛合金次生α相析出行为及力学性能

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航空材料学报 2024年第2期44卷 159-168页

作者：胡明邱建科雷晓飞张金虎董利民杨锐中国科学院金属研究所师昌绪先进材料创新中心沈阳110016

研究单/双重时效热处理对TB9合金次生α相形貌及力学性能的影响规律。借助XRD分析合金相组成,采用光学显微镜和扫描电子显微镜观察显微组织,着重分析微观组织形貌随时效温度变化的演变特征,测试室温拉伸性能和断裂韧度。研究结果表明:... 详细信息

研究单/双重时效热处理对TB9合金次生α相形貌及力学性能的影响规律。借助XRD分析合金相组成,采用光学显微镜和扫描电子显微镜观察显微组织,着重分析微观组织形貌随时效温度变化的演变特征,测试室温拉伸性能和断裂韧度。研究结果表明:单重时效时,晶粒内次生α相呈锯齿状和片层状析出,随着时效温度升高,α相尺寸增大,片层状α相含量增加;430℃时效时,合金强度较低,塑性较好,在470℃时效时合金强度最高;随时效温度的提高,强度先增大后维持在同一强度水平。双重时效时,晶粒内次生α相主要呈锯齿状析出,随时效温度升高,α相尺寸增大,抗拉强度先升高后降低,最高可达1542 MPa,且塑性变化较小。双重时效下合金的抗拉强度较单重时效大幅提高,这主要是由于晶界附近第二相析出强化和晶内锯齿结构α相的共同作用。

关键词： TB9合金次生α相显微组织力学性能

Influence of heat treatment on microstructures and micro-hardness of n-SiO2/Ni composite coating

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中国有色金属学会会刊:英文版 2004年第Z1期14卷 111-114页

作者： XU Bin-shi WANG hai-dou dong Shi-yun JIANG Bin TU Wei-yi National Key Laboratory for remanufacturing Academy of Armored Force Engineering Beijing 100072 China

The n-SiO2/Ni composite electro-brush plating coating was prepared on the 1045 steel substrate. SEM and TEM were utilized to analyze the surface and cross-section morphologies or the microstructures of the composite coating before and after heat treatment, as well as a micro-hardness tester was used to measure the micro-hardness before and after heat treatment. The results show that the entrance of nano SiO2 particles into composite coating makes the micro-hardness higher. After heat treatment, due to the obstruction to growth of Ni crystals from nano particles, the composite coating still possesses a higher micro-hardness than that of common Ni-base coating.

关键词： nano SiO2 particles electro-brush plating composite coating heat treatment microstructures microhardness

An Octave-Spanning,Kerr-Lens Mode-Locked Ti:sapphire Oscillator with Double-Chirped Mirrors and BaF_(2)

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Chinese Physics Letters 2012年第11期29卷 88-90页

作者： zhang Long HAN hai-Nian zhang Qing WEI Zhi-Yi Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190

We demonstrate an octave-spanning Kerr-lens mode-locked Ti:sapphire laser with double-chirped mirrors(DCMs),BaF_(2) wedges and plate,which generates laser pulses in the spectrum range from 600 nm to 1200 nm at-45 dB below the maximum and the duration of 8.5 fs at the repetition rate of 80 *** average output power is 100 mW under 5 W pump *** carefully adjusting the insertion of BaF_(2) wedges and the optimization position of Ti:sapphire crystal in the cavity,we can obtain the smooth swings in the interferometric autocorrelation trace due to good third-order dispersion compensation.

关键词： pump wedge repetition

Degradation of sulfonamides and formation of trihalomethanes by chlorination after pre-oxidation with Fe(Ⅵ)

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Journal of Environmental Sciences 2018年第11期30卷 89-95页

作者： Tuqiao zhang Feilong dong Feng Luo Cong Li College of Civil Engineering and Architecture ZhejiangUniversity Hangzhou 310027 China

Sulfonamides are used in human therapy, animal husbandry and agriculture but are not easily biodegradable, and are often detected in surface water. Sulfamethazine （SMZ） and sulfadiazine （SDZ） are two widely used sulfonamide antibiotics that are used heavily in agriculture. In this study, they were degraded in an aqueous system by chlorination after pre-oxidation with ferrate（VI）（FeVIO2-, Fe（VI））, an environmentally friendly oxidation technique that has been shown to be effective in degrading various organics. The kinetics of the degradation were determined as a function of Fe（VI）（0-1.5 mg/L）, free chlorine （0-1.8 mg/L） and temperature （15- 35℃）. According to the experimental results, SMZ chlorination followed second-order kinetics with increasing Fe（VI） dosage, and the effect of the initial free chlorine concentration on the reaction kinetics with pre-oxidation by Fe（VI） fitted a pseudo-first order model. The rate constants of SDZ and SMZ chlorination at different temperatures were related to the Arrhenius equation. Fe（VI） could reduce the levels of THMs formed and the toxicity of the sulfonamide degradation systems with Fe（VI） doses of 0.5-1.5 mg/L, which provides a reference for ensuring water quality in drinking water systems.

关键词： Ferrate(VI) Sulfadiazine Sulfamethazine Free chlorine Trihalomethanes

Pattern design on 3D triangular garment surfaces

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第10期8卷 1642-1649页

作者： WANG Jin LU Guo-dong LI Ji-tuo CHEN Long zhang dong-liang State Key Lab. of CAD ＆ CG Zhejiang University Hangzhou 310027 China Institute of Automation Chinese Academy of Sciences Beijing 100080 China Digital Fashion Ltd. Osaka 5410053 Japan

This paper focuses on a pattern design method for a 3D triangular garment surface. Firstly, some definitions of 3D style lines are proposed for designing the boundaries of patterns as drawing straight lines or splines on the triangular surface. Additionally some commonly used style lines are automatically generated to enhance design efficiency. Secondly, after style lines are preprocessed, a searching method is presented for quickly obtaining the boundaries and patches of a pattern on the 3D trian- gular surface. Finally a new pattern design reuse method is introduced by encoding/decoding the style line information. After style lines are encoded, the pattern design information can be saved in a pattern template and when decoding this template on a new garment surface, it automates the pattern generation for made-to-measure apparel products.

关键词： Pattern design Style lines 3D patch searching Encoding/decoding Design reuse

青钱柳醇提浸膏挥发性香气成分及其热裂解产物的GC-MS分析研究

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中国药科大学学报 2024年第4期55卷 493-503页

作者：张兴贵方泗杨陈蕊熊怡乐董卉林张健秦艳华殷志琦中国药科大学中药学院中药制药系南京211198 江苏中烟工业有限责任公司南京210019 江苏省中医药研究院转化医学实验室南京210028

为研究青钱柳浸膏作为添加剂应用于卷烟的可行性,采用气相-离子迁移谱(GC-IMS)分析挥发性香气成分,通过单热重-气相色谱-质谱联用技术(TGA-GC/MS)模拟燃烧过程,分析青钱柳浸膏在氮气环境中的裂解产物,并对产物可能的裂解机制进行合理推... 详细信息

为研究青钱柳浸膏作为添加剂应用于卷烟的可行性,采用气相-离子迁移谱(GC-IMS)分析挥发性香气成分,通过单热重-气相色谱-质谱联用技术(TGA-GC/MS)模拟燃烧过程,分析青钱柳浸膏在氮气环境中的裂解产物,并对产物可能的裂解机制进行合理推测。结果表明:醛类、醇类、酮类为青钱柳浸膏的主要挥发性香气成分,占总香气成分的62.28%。在不同温度条件下,青钱柳浸膏裂解产物差异较大,在200℃、360℃、440℃共鉴定出79种化合物,其中24种致香成分对卷烟风格具有重要作用,包括醛、酮、醇、酚、呋喃、芳香族化合物和其他一些天然香气物质,其中含量较多的酚类化合物主要是由含有类似愈创木酚单元和丁香酚单元结构的化合物通过侧链的断裂、脱甲基化、脱甲氧基化、脱水等形成,呋喃及呋喃衍生物主要由糖类或糖苷类化合物通过断裂糖苷键和脱水形成。

关键词：青钱柳浸膏挥发性香气成分气相色谱/质谱联用裂解产物裂解机制

Optical Properties of Nd^3＋ in Nd（DBM）3Phen-doped Poly（methyl methacrylate）

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Chinese Journal of Chemical Physics 2006年第3期19卷 273-276页

作者： Zhi-qiang Zheng Hao Liang hai Ming Qi-jin zhang Jian-ping Xie Department of Physics Fujian Normal University Fuzhou 350007 China Department of Physics University of Science and Technology of China Hefei 230025 China Department of Polymer Science and Engineering University of Science and Technology of China Hefei 230025 China

Nd（DBM）3Phen-doped （DBM is dibenzoylmethane and Phen is phenanthroline） polymethyl methacrylate （PMMA） is prepared. Optical absorption, excitation and emission spectra were analyzed for Nd^3＋ in Nd（DBM）3Phen-doped PMMA. Using the Judd-Ofelt theory, the absorption spectrum was analyzed. The Judd-Ofelt（J-O） intensity parameters of Nd（DBM）3Phen-doped polymethyl methacrylate were calculated to be Ω2 = 20.97 × 10^-20 cm^2, Ω4= 3.42 × 10^-20 cm^2, Ω6 = 2.90 × 10^-20 cm^2. The radiative lifetime （631 μs） of the excited 4F3/2 level is given. The stimulated emission cross-sections and the fluorescence branch ratios for the ^4F3/2 →^4Ij′ transitions are also evaluated. Analysis reveals that Nd（DBM）3Phen-doped PMMA is promising for application in polymer optical fibers and planar waveguides.

关键词： Radiative properties Judd-Ofelt analysis Nd(DBM)3Phen Polymer