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Microstructure and Performances of Nanocrystalline Zinc-nickel Alloy Coatings

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材料热处理学报 2004年第05B期25卷 1275-1278页

作者： liguang-yu lianjian-she niuli-yuan jiangzhong-hao TheKeyLabofAutomobileMaterials MinistryofEducation.ChinaCollegeofMaterialsSc＇ienceandEngineeringJilinUniversityNantingCampusChangchun130025.China

Nanocrystalline zinc-nickel alloy coatings were deposited from an alkaline zincate bath contained an organic additive that can reduce polarization and a complexing agent. SEM and TEM observations and XRD analysis were performed to examine the microstructure and phase composition of the coatings. The nickel content in deposits is 12.0-14.7% and the coating is consisted of single nanocrystalline y-phase structure (Ni5Zn2i), with grain average grain size about 15nm. The nanocrystalline zinc-nickel alloy coatings have better corrosion resistance, less bnttleness and higher microhardness than the conventional zinc coatings.

关键词：显微结构纳米结晶锌镍合金 SEM TEM

Impact of Burial Dissolution on the Development of Ultradeep Fault-controlled Carbonate Reservoirs:Insights from High-temperature and High-pressure Dissolution Kinetic Simulation

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Acta Geologica Sinica(English Edition) 2025年第1期99卷 228-242页

作者： TAN Xiaolin ZENG Lianbo she Min LI hao MAO Zhe SONG Yichen YAO Yingtao WANG Junpeng LU yuzhen National Key Laboratory of Petroleum Resources and Engineering China University of Petroleum(Beijing)Beijing 102249China College of Geoscience China University of Petroleum(Beijing)Beijing 102249China PetroChina Hangzhou Institute of Geology Hangzhou 310023China shenzhen Branch of CNOOC(China)Co. Ltd.Shenzhen 518000China

Burial dissolution is a critical diagenetic process influencing ultra-deep carbonate reservoir development and *** carbonate samples with different internal structures were prepared,and high-temperature and highpressure dissolution kinetic simulations were *** results demonstrate that the intensity of burial dissolution is controlled by temperature and pressure,while tectonic-fluid activity influences the development pattern of burial dissolution,ultimately determining the direction of its differential *** burial dissolution is likely to occur primarily at relatively shallow depths,significantly influencing reservoir formation,preservation,modification,and *** development of faults facilitates the maintenance of the intensity of burial *** maximum intensity of burial dissolution occurs at the tips and overlap zones of faults and intersections of multiple *** larger the scale of the faults,the more conducive it is to the development of burial *** dissolution fosters the formation of fault networks characterized by enhanced reservoir capacity and *** dissolution controlled by episodic tectonic-fluid activity is a plausible explanation for forming the Tarim Basin's ultra-deep fault-controlled“stringbead-like”reservoirs.

关键词： burial dissolution tectonic-fluid ultra-deep carbonate reservoirs high-temperature and high-pressure dissolution kinetic simulation

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烟雨化青瓷——瓷器釉色变化解读与展示

化学教育(中英文) 2025年第2期46卷 53-59页

作者：姚虹厍德贺艺豪严悦曹文昱刘星宇西北师范大学化学化工学院甘肃兰州730070

非物质文化遗产研究的热度逐年上升,各种学说层出不穷,但对非遗文化中蕴含的科学原理进行深入探究和科学普及的工作却不多见。本实验秉持深耕非遗沃土,让传统文化焕发科技魅力的初心,致力于模拟复刻传统陶瓷施釉工艺,解读瓷器釉色千变... 详细信息

非物质文化遗产研究的热度逐年上升,各种学说层出不穷,但对非遗文化中蕴含的科学原理进行深入探究和科学普及的工作却不多见。本实验秉持深耕非遗沃土,让传统文化焕发科技魅力的初心,致力于模拟复刻传统陶瓷施釉工艺,解读瓷器釉色千变万化的科学原理。从瓷釉彩料制备、釉面装饰工艺和釉质变色过程3方面入手,用常见生活用品代替专业材料,室温反应代替高温烧制,不仅实现了室温下釉层变色的展示效果,同时对釉上彩、釉下彩和斗彩3种传统瓷器釉面装饰工艺流程也进行了复刻。与此同时,团队自主开发虚拟仿真程序,线上线下联动,推进了陶瓷传统工艺相关的多维度梯度科普。

关键词：陶瓷釉料彩绘施釉氧化还原反应绿色化学

Rapid recognition of Chinese herbal pieces of Areca catechu by different concocted processes using Fourier transform mid-infrared and near-infrared spectroscopy combined with partial least-squares discriminant analysis

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Chinese Chemical Letters 2013年第7期24卷 639-642页

作者： Hai-Yan Fu dong-Chen Huang Tian-Ming Yang yuan-Bin she hao Zhang Third Class Laboratory About Ethno-medicine of State Administration of Traditional Chinese Medicine College of PharmacySouth-Central University for Nationalities Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education.College of Chemistry and Materials Science South-Central University for Nationalities Third Class Laboratory About Ethno-medicine of State Administration of Traditional Chinese Medicine College of Pharmacy.South-Central University for Nationalities

Rapid and sensitive recognition of herbal pieces according to different concocted processing is crucial to quality control and pharmaceutical effect. Near-infrared （NIR） and mid-infrared （MIR） technology combined with supervised pattern recognition based on partial least-squares discriminant analysis （PLSDA） was attempted to classify and recognize six different concocted processing pieces of 600 Areca catechu L. samples and the influence of fingerprint information preprocessing methods on recognition performance was also investigated in this work. Recognition rates of 99.24%, 100% and 99.49% for original fingerprint, multiple scatter correct （MSC） fingerprint and second derivative （2nd derivative） fingerprint of NIR spectra were achieved by PLSDA models, respectively. Meanwhile, a perfect recognition rate of 100% was obtained for the above three fingerprint models of MIR spectra. In conclusion, PLSDA can rapidly and effectively extract otherness of fingerprint information from NIR and MIR spectra to identify different concocted herbal pieces ofA. catechu.

关键词： NIR and MIR spectroscopy Partial least-squares discriminant analysis Different concocted processing herbal pieces

慈善事业中的“她力量”——业主配偶涉入管理对公司捐赠的影响

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山西财经大学学报 2025年第2期47卷 99-112页

作者：徐世豪贺小刚陈元上海财经大学商学院上海200433 武汉轻工大学管理学院湖北武汉430048

基于社会角色理论,利用2008—2020年中国上市家族企业数据,考察业主配偶涉入管理对公司慈善捐赠的影响。研究发现:慈善事业存在显著的“她力量”,即业主配偶涉入管理提高了家族企业慈善捐赠动力;夫妻婚姻持续时间增加和后代接班准备强... 详细信息

基于社会角色理论,利用2008—2020年中国上市家族企业数据,考察业主配偶涉入管理对公司慈善捐赠的影响。研究发现:慈善事业存在显著的“她力量”,即业主配偶涉入管理提高了家族企业慈善捐赠动力;夫妻婚姻持续时间增加和后代接班准备强化了业主配偶涉入管理对家族企业慈善捐赠的促进作用;业主配偶涉入管理通过促进家族企业长期发展导向、增强公平担当意识,提高企业慈善捐赠水平;业主配偶涉入管理对公司慈善捐赠的促进作用受出生地佛教文化氛围以及是否有贫困经历的影响,但在配偶学历水平的不同分组间没有显著差异。

关键词：慈善捐赠业主配偶配偶涉入管理上市家族企业婚姻持续时间后代接班准备长期发展导向公平担当意识

Optical and Mechanical Properties of Polyurethane/Surface-modified Nanocrystalline Cellulose Composites

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Chinese Journal of Polymer Science 2014年第10期32卷 1363-1372页

作者： hao Zhang Ying she Xue Zheng He-yu Chen 蒲俊文 MOE Key Laboratory of Wooden Material Science and Application Beijing Forestry University

in order to improve the optical and mechanical performances of waterborne polyurethane （WPU）, nanocrystalline cellulose （NCC）/WPU composites were synthesized in this study. NCC （prepared by acid hydrolysis of cotton fiber） was modified by （3-aminopropyl）triethoxysilane （APTES） to enhance its compatibility with WPU, and the surface-modified NCC was characterized by grafting ratio, crystallinity and contact angle （CA）. NCC/WPU composites were examined by scanning electron microscopy （SEM）, X-ray powder diffraction （XRD） and thermogravimetric analysis （TG）. The anti-yellowing property, specular gloss, pencil hardness, and abrasion resistance of NCC/WPU composites were investigated by the methods of Chinese National Standards GB/T 23999-2009, GB/T 9754-2007, GB/T 6739-2006 and GB/T 1768-2006, respectively. The results showed that the grafting ratio of NCC modified by 6% APTES was 36.01% and the crystallinity of modified NCC was decreased with the enhancement of APTES. CA of the modified NCC was decreased by 28.8% and the nanoparticles were homogeneously dispersed in the WPU matrix. The XRD patterns of the NCC/WPU composites were relatively steady, while the thermal stability of the composites was enhanced by 6.7% with 1.0 wt% modified NCC. Modified NCC affected the specular gloss of NCC/WPU composites more obviously than the anti-yellowing property. The pencil hardness of NCC/WPU composites was increased from 2H to 4H by addition of NCC and the abrasion resistance of the composites was enhanced significantly. In general, NCC/WPU composites showed significant improvements in the optical and mechanical performances.

关键词： Nanocrystalline cellulose Waterborne polyurethane Cotton Optical and mechanical properties Nanocomposites.

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麦什扎黄河大桥主引桥衔接设计关键技术

公路 2025年第1期70卷 183-192页

作者：王桢折孝明杨雨豪翟晓亮乔新宇马隆琛中交第一公路勘察设计研究院有限公司西安市710075

麦什扎黄河大桥主桥为一孔246 m下承式提篮钢箱—组合梁系杆拱桥,引桥为一孔40 m预应力混凝土异形现浇箱梁。主桥主拱为钢箱截面,拱轴线为二次抛物线,平面与铅垂线夹角为9°,面内矢跨比为1/5;主梁为钢混组合梁,钢结构部分为钢格构梁体系... 详细信息

麦什扎黄河大桥主桥为一孔246 m下承式提篮钢箱—组合梁系杆拱桥,引桥为一孔40 m预应力混凝土异形现浇箱梁。主桥主拱为钢箱截面,拱轴线为二次抛物线,平面与铅垂线夹角为9°,面内矢跨比为1/5;主梁为钢混组合梁,钢结构部分为钢格构梁体系;主桥施工采用斜拉扣挂配合缆索吊法施工,先拱后梁。受桥梁设计理念、资金来源、分离式墩柱和未来水平系杆索更换等多种因素影响,该桥主引桥衔接位置设计为140 cm纵桥向牛腿,引桥小桩号侧端横梁设计为类似于门式框架墩盖梁的异形端横梁。纵桥向牛腿采用了加粗门字形骨架钢筋,引桥主梁预应力钢束从牛腿正中穿过等创新设计。异形端横梁采用了减小靠近张拉端横向预应力间距,优化横向预应力布置线形,改变张拉槽口形状和锚下钢筋网等诸多设计。

关键词：桥梁工程麦什扎黄河大桥下承式系杆拱桥提篮系杆拱桥钢混组合梁主引桥衔接设计

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Evolution of Al2O3 inclusions by cerium treatment in low carbon high manganese steel

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Journal of Iron and Steel Research International 2017年第9期24卷 925-934页

作者： hao Li Yan-chong yu Xiang Ren Shao-hua Zhang she-bin Wang College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024ShanxiChina Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024ShanxiChina

The influence of cerium（Ce）treatment on the morphologies,size and distributions of Al_2O_3 inclusions in low carbon high manganese steel was investigated by OM,SEM-EDS and theoretical *** results showed that Ce can modify the morphologies and types of Al_2O_3 *** Ce treatment,the irregular Al_2O_3 inclusions were replaced by smaller and dispersive spherical cerium *** effects of treatment time and Ce content on the evolution of Al_2O_3 inclusions were *** indicated that Al_2O_3 inclusions were wrapped by rare earth inclusions to form a ring like shape Ce-enriched band around the *** was established to elucidate the evolution mechanism of Al_2O_3 *** kinetics of inclusions was discussed qualitatively to analyze the velocity controlled *** was found that diffusion of Ce^（3＋）and Al^（3＋）in solid inclusion core and the formed intermediate layer would be the limited step during the evolution process.

关键词： Low carbon high manganese steel Inclusion Cerium treatment Evolution mechanism Transferring kinetics

A Modulus Variation Model of Concrete under External Sulfate Attack:New Perspective from Statistical Evolution of Microcracks

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Journal of Wuhan University of Technology(Materials Science) 2018年第6期33卷 1465-1471页

作者： ZHANG hao she Wei School of Material Science and Engineering Southeast UniversityNanjing 211189China State Key Laboratory of High Performance Civil Engineering Material Nanjing 211100China

A numerical model was proposed to describe the modulus variation of mortar exposed to external sulfate attack and the effectivity was verified by experiments. The model joints statistical evolution of microcracks to effective elastic modulus with microcracks and is applied to predict the damage degree of mortar attacked by sulfate. The experimental results show that the model can predict the modulus variation development of the specimen and the microcraks density. The elastic modulus values calculated by the model are consistent with that measured by experiments. The model focuses on nucleation of microcracks and finds that the theoretical results of microcracks number density show a linear growth over time in mortar. Compared with other sulfate attack damage model, this model provides a more suitable damage evolution equation that can be used to analyze the chemically assisted damage.

关键词： sulfate attack effective elastic modulus microcracks number density damage evolution