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Evolution of plasticized MnO–Al2O3–SiO2-based nonmetallic inclusion in 18wt%Cr-8wt% Ni stainless steel and its properties during soaking process 被引量:3
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作者 Jing Guo Xing-run Chen +2 位作者 Shao-wei Han Yan Yan Han-jie Guo 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2020年第3期328-339,共12页
The properties of MnO–Al2O3–SiO2-based plasticized inclusion are likely to change during soaking process due to its low melting point. In this study, the evolution of the MnO–Al2O3–SiO2-based inclusion of 18 wt%Cr... The properties of MnO–Al2O3–SiO2-based plasticized inclusion are likely to change during soaking process due to its low melting point. In this study, the evolution of the MnO–Al2O3–SiO2-based inclusion of 18 wt%Cr-8 wt%Ni stainless steel under isothermal soaking process at 1250°C for different times was investigated by laboratory-scale experiments and thermodynamic analysis. The results showed that the inclusion population density increased at the first stage and then decreased while their average size first decreased and then increased. In addition, almost no Cr2O3-concentrated regions existed within the inclusion before soaking, but more and more Cr2O3 precipitates were formed during soaking. Furthermore, the plasticity of the inclusion deteriorated due to a decrease in the amount of liquid phase and an increase in the high-melting-pointphase MnO–Cr2O3 spinel after the soaking process. In-situ observations by high-temperature confocal laser scanning microscopy(CLSM) confirmed that liquid phases were produced in the inclusions and the inclusions grew rather quickly during the soaking process. Both the experimental results and thermodynamic analysis conclude that there are three routes for inclusion evolution during the soaking process. In particular, Ostwald ripening plays an important role in the inclusion evolution, i.e., MnO–Al2O3–SiO2-based inclusions grow by absorbing the newly precipitated smaller-size MnO–Cr2O3 inclusions. 展开更多
关键词 nonmetallic inclusion soaking process Ostwald ripening stainless steel
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Fluid Evolution and Ore-forming Processes of the Jiama Cu Deposit, Tibet: Evidence from Fluid Inclusions 被引量:2
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作者 YAO Xiaofeng LIU Jiajun +2 位作者 TANG Juxing ZHENG Wenbao ZHANG Zhi 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2018年第1期127-143,共17页
The Jiama deposit is a large copper deposit in Tibet. Mineralization occurs in three different host rocks: skarn, hornfels and porphyry. A detailed fluid inclusion study was conducted for veins in the different host ... The Jiama deposit is a large copper deposit in Tibet. Mineralization occurs in three different host rocks: skarn, hornfels and porphyry. A detailed fluid inclusion study was conducted for veins in the different host rocks to investigate the relationship between fluid evolution and ore-forming processes. Based on examination of cores from 36 drill holes, three types of veins (A, B and D) were identified in the porphyries, four types (I, II, III and IV) in the skarn, and three (a, b and c) in the hornfels. The crosscutting relationships of the veins and that of the host rocks suggest two hydrothermal stages, one early and one late stage. Fluid inclusions indicate that the Jiama hydrothermal fluid system underwent at least two episodes of fluid boiling. The first boiling event occurred during the early hydrothermal stage, as recorded by fluid inclusions hosted in type A veins in the porphyries, type a veins in the hornfels, and wollastonite in the skarns. This fluid boiling event was associated with relatively weak mineralization. The second boiling event occurred in the late hydrothermal stage, as determined from fluid inclusions hosted in type B and D veins in the porphyries, type I to IV veins in the skarns, and type b and c veins in the hornfels. This late boiling event, together with mixing with meteoric water, was responsible for more than 90% of the metal accumulation in the deposit. The first boiling only occurred in the central part of the deposit and the second boiling event took place across an entire interlayered structural zone between hornfels and marble. A spatial zoning of ore-elements is evident, and appears to be related to different migration pathways and precipitation temperatures of Cu, Mo, Pb, Zn, Au and Ag. 展开更多
关键词 fluid inclusion fluid evolution ore-forming processes Jiama deposit TIBET
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Magma Evolution Processes in the Southern Okinawa Trough:Insights from Melt Inclusions 被引量:1
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作者 ZHANG Yujiao ZHAI Shikui 《Journal of Ocean University of China》 SCIE CAS CSCD 2021年第6期1383-1397,共15页
The Okinawa Trough is an initial back-arc basin that is influenced by the subduction of the Philippine Sea Plate and develops on the continental crust.The Okinawa Trough is a natural laboratory for the study of basin ... The Okinawa Trough is an initial back-arc basin that is influenced by the subduction of the Philippine Sea Plate and develops on the continental crust.The Okinawa Trough is a natural laboratory for the study of basin evolution,magmatism,and crustmantle processes in the early stage of back-arc spreading.Melt inclusions are small droplets of magma that are captured during the mineral crystallization process and can record the geochemical composition changes during magma evolution.In this study,the geochemical compositions of melt inclusions in host plagioclases of two volcanic rock samples at Station nos.9-1 and 9-2 from the southern Okinawa Trough are systematically analyzed.Based on previous studies,the origin and evolution of magma and the introduction of subducting materials in the study area are discussed.Results show that melt inclusions are characterized by the relative enrichment of large-ion lithophile elements,depletion of high-field-strength elements,and slight enrichment of rare earth elements.Indeed,the subduction of the Philippine Sea Plate introduced sediment-derived melts and fluids into the magma source area of the southern Okinawa Trough.Subsequently,4%to 5%partial melting of the hydrated mantle produces basaltic magma.The melt inclusions of andesite and dacite investigated in this study were formed by fractional crystallization of basaltic magma.Finally,the crystallization of plagioclase,pyroxene,and magnetite occurred during the late stage of magma evolution.The temperature-pressure data show that the melt inclusions in plagioclase have two capture periods:one is at temperatures above 1250℃and the other is at temperatures between 1180℃and 1200℃.The capture pressure of the inclusions at temperatures between 1180℃and 1200℃is between 5.6 kPa and 6.1 kPa,corresponding to the depth of 15–17 km below the seafloor.The geochemical characteristics of major and trace elements in inclusions show that the samples from two stations(i.e.,9-1 and 9-2)have similar or identical magma source areas.However,the crystallization differentiation reflected by inclusions in sample 9-1 is more obvious than that in sample 9-2.The inclusions were captured during magma evolution and were not contaminated by crustal materials. 展开更多
关键词 melt inclusions magma evolution processes contamination of crustal materials introduction of subducting materials the southern Okinawa Trough
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Metallogenic Processes:Evidencesfrom Zoning Patterns of Mineralization and alteration and fluid inclusion geochemistryin the Lehong Zn-Pb Deposit in Northeastern Yunnan, China
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作者 ZHAO dong HAN Runshen +4 位作者 REN Tao WANG Jiasheng ZHANG Xiao-pei WU Yongtao CUI Junhao 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2017年第S1期251-252,共2页
1 Introduction The large clusters of Zn-Pb deposits in northeastern Yunnan,located in the southwestern margin of the Yangtze Block,are an important part of the Sichuan-YunnanGuizhou Pb-Zn Poly-metallic Metallogenic Tr... 1 Introduction The large clusters of Zn-Pb deposits in northeastern Yunnan,located in the southwestern margin of the Yangtze Block,are an important part of the Sichuan-YunnanGuizhou Pb-Zn Poly-metallic Metallogenic Triangle Area 展开更多
关键词 In Pb Metallogenic processes:Evidencesfrom Zoning Patterns of Mineralization and alteration and fluid inclusion geochemistryin the Lehong Zn-Pb Deposit in Northeastern Yunnan China Zn
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Formation and Characteristics of Acrylonitrile/Urea Inclusion Compound
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作者 邹均庭 王雨松 +2 位作者 庞文民 石磊 鲁非 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2013年第2期198-202,I0004,共6页
The formation process and composition of the acrylonitrile/urea inclusion compounds (AN/UIC) with different aging times and AN/urea molar feed ratios are studied by differential scanning calorimetry (DSC) and X-ra... The formation process and composition of the acrylonitrile/urea inclusion compounds (AN/UIC) with different aging times and AN/urea molar feed ratios are studied by differential scanning calorimetry (DSC) and X-ray diffraction (XRD). It is suggested that DSC can determine the guest/host ratio and the heat of decomposition. Meanwhile, the guest/host ratio and heat of decomposition are obtained, which are 1.17 and 5361.53 J/mol, respec- tively. It is suggested AN molecules included in urea canal lattice may be packed flat against each other. It is found that the formation of AN/UIC depends on the aging time. XRD results reveal that once AN molecules enter urea lattice, AN/UIC are formed, which possess the final structure. When AN molecules are sufficient, the length of AN molecular arrays in urea canals increases as aging time prolonging until urea tunnels are saturated by AN. 展开更多
关键词 ACRYLONITRILE Urea inclusion compound Molar ratio Heat of decomposition Formation process
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Modeling study on fluid flow and inclusion motion in 6-strand bloom caster tundishes 被引量:3
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作者 GuanghuaWen LifengZhang +4 位作者 PingTang ZhenjiangSu MingmeiZhu WuanGut andKewenZhao: 《Journal of University of Science and Technology Beijing》 CSCD 2004年第4期310-314,共5页
The behavior of fluid flow and particle motion in a 6-strand bloom castertundish was investigated by a water model and numerical simulation. Compared with a device withoutflow control, the tundish with flow control ha... The behavior of fluid flow and particle motion in a 6-strand bloom castertundish was investigated by a water model and numerical simulation. Compared with a device withoutflow control, the tundish with flow control has an important effect on the fluid flow pattern andinclusion removal. It is revealed that by non-isothermal process, which is real productioncondition, the fluid flow in tundish shows a strong buoyancy pattern, which drives particles to moveupwards. The particle removal was quantitatively studied by mathematical and physical simulations. 展开更多
关键词 physical and mathematical simulation non-isothermal process fluid flow inclusion removal multi-strand tundish
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ULTRASONIC SEPARATION OF MICRO-SIZED INCLUSIONS IN MOLTEN METAL
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作者 X.Q. Bai and J.C. He Key Laboratory of National Education Ministry for Electromagnetic Processing of Materials, Northeastern University, Shenyang 110004, China 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2001年第5期375-379,共5页
The coagulation time and position of micro-sized non-metallic inclusions in molten metal during ultrasonic separation process were investigated, and the motion course of micro-sized non-metallic inclusions in an ultra... The coagulation time and position of micro-sized non-metallic inclusions in molten metal during ultrasonic separation process were investigated, and the motion course of micro-sized non-metallic inclusions in an ultrasonic standing wave field was numerically simulated. The results of theoretical analysis and numerical simulation show that the movement of inclusions depends on the balance between the acoustic radiation force, effective buoyancy force and viscous drag force. It is presented that micro-sized inclusions, agglomerated at antinode-planes may be removed further with horizon tal ultrasound.`` 展开更多
关键词 ULTRASOUND molten metal micro-sized non-metallic inclusion numerical simulation process parameter
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Theoretical Study on the Inclusion Complex of β-Cyclodextrin and Nitrobenzene
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作者 解菊 殷亚星 +2 位作者 金国莲 何茂霞 刁国旺 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2011年第5期706-716,共11页
Quantum chemical calculations were carried out to investigate the structures and properties for the inclusion complexes of nitrobenzene (NB) into β-cyclodextrin. Two low-energy conformations of β-cyclodextrin (A ... Quantum chemical calculations were carried out to investigate the structures and properties for the inclusion complexes of nitrobenzene (NB) into β-cyclodextrin. Two low-energy conformations of β-cyclodextrin (A and B) in the gas phase were initially investigated by the PM3 and B3LYP/6-31+G(d,p) calculations, respectively. Three different orientations were considered in the inclusion process of A and B with NB to form 1:1 complexes. Potential energy scan by PM3 calculations indicated that the phenyl orientation Ab for conformation A and the equator orientation Bc for conformation B are more favorable in energy, respectively. We also considered the 2:1 inclusion complexes of host A or B with guest NB in the gas phase. PM3 calculation indicated that the host-guest interaction energies to form 1:1 complexes are more negative than those to form 2:1 NB/B complexes. Finally, we studied the solvent effect of NB/CD complex, and PM3 results show that the influence of water molecules on the inclusion process is very important. The driving forces for the inclusion process and the geometries of complexes were discussed in detail. 展开更多
关键词 Β-CYCLODEXTRIN inclusion complex host-guest interaction quantum chemical calculation
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Studies on Cyclodextrin Inclusion Complex by Fluorescence Anisotropy
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作者 Jiang Yunbao, Huang Xianzhi and Chen Guozhen (Department of Chemistry, Xiamen University, Xiamen) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1990年第4期327-331,共5页
An equation for determining the equilibrium association constant (KA) of cyclodextrin inclusion complex with fluorescence anisotropy is derived and used to determine KA of pyrene-B-cyclodextrin inclusion complex. The ... An equation for determining the equilibrium association constant (KA) of cyclodextrin inclusion complex with fluorescence anisotropy is derived and used to determine KA of pyrene-B-cyclodextrin inclusion complex. The existing forms of cyclodextrin inclusion complex in solution, the interaction type of host with guest, and the possibility of application of B-cyclodextrin in the analysis of metal ions using naphthalene derivative as a ligand are discussed based on the equation derived along with the curve of fluorescence anisotropy versus cyclodextrin concentration of guest/cyclodextrin system. 展开更多
关键词 Fluorescence anisotropy Cyclodextrin inclusion complex Association constant Existing form host-guest interaction
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走向统纳式:社会组织高质量党建新思路——基于“结构-功能-过程”分析框架
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作者 张冉 张瑞 《东北大学学报(社会科学版)》 CSSCI 北大核心 2024年第5期55-65,共11页
任务导向的社会组织党建实践缺乏针对高质量的图景识别,一定程度导致对有形而非有效的关注。破解社会组织党建的理论与实践双重困局亟待回应“何为高质量党建的应然样态”。为此,跳出传统宏中观的分析定式,在“嵌入”与“统合”模式的... 任务导向的社会组织党建实践缺乏针对高质量的图景识别,一定程度导致对有形而非有效的关注。破解社会组织党建的理论与实践双重困局亟待回应“何为高质量党建的应然样态”。为此,跳出传统宏中观的分析定式,在“嵌入”与“统合”模式的基础上提出“统纳式”社会组织高质量党建新模式。同时,纳入“过程”维度以调和结构功能主义的静态逻辑,构建起“结构-功能-过程”的理论框架,继而从系统结构关系、功能维度呈现、动态周期过程三维度微观呈现了统纳式党建的应然图景。“统纳式”党建应体现结构上的系统性、关系上的柔性化、流程上的动态性,具体可通过“结构”维度的组织群域关系、“功能”维度的多维要素呈现以及“过程”维度的不同生命周期得以阐释。 展开更多
关键词 社会组织 高质量党建 “统纳式”党建 “结构-功能-过程”
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连翘与陈皮混合挥发油提取与包合工艺优化
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作者 施靖 梁婕 +2 位作者 赵宇波 王红芳 李国川 《中国药业》 CAS 2024年第16期73-78,共6页
目的优选保和颗粒组方中连翘、陈皮混合挥发油提取工艺及β-环糊精(β-CD)包合工艺。方法以饮片粉碎粒度、提取时间、加水倍数为考察因素,挥发油收率为评价指标,采用L_(9)(3^(4))正交试验法优选。以β-CD与挥发油比例(g∶m L)、包合时... 目的优选保和颗粒组方中连翘、陈皮混合挥发油提取工艺及β-环糊精(β-CD)包合工艺。方法以饮片粉碎粒度、提取时间、加水倍数为考察因素,挥发油收率为评价指标,采用L_(9)(3^(4))正交试验法优选。以β-CD与挥发油比例(g∶m L)、包合时间、包合温度为考察因素,挥发油包合率、包合物收率、包合物含油量的综合评分为评价指标,同上法优选包合工艺并验证。结果最佳提取工艺,将饮片粉碎至20目,加10倍水提取3 h。最佳包合工艺,β-CD∶挥发油为7∶1(g∶m L),45℃下包合反应3 h;紫外光谱扫描、X射线衍射、扫描电镜、薄层色谱等结果均证明形成了稳定的包合物。制成的包合物中连翘及陈皮混合挥发油的包合率为95.13%,包合物收率为87.84%,包合物含油量为10.29%,综合评分为76.70分。结论优化后的连翘及陈皮混合挥发油提取、包合工艺稳定可行。 展开更多
关键词 连翘 陈皮 挥发油 提取 包合 Β-环糊精 工艺优选
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生成式人工智能及其教育应用的基本争议和对策 被引量:15
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作者 苗逢春 《开放教育研究》 CSSCI 北大核心 2024年第1期4-15,共12页
本文是对联合国教科文组织《生成式人工智能教育与研究应用指南》的系列解读第二篇,着重讨论生成式人工智能及其教育应用引发的基本争议。“基于工作过程”技术缺陷,生成式人工智能已引发加速数据贫穷、技术不透明导致服务辖区内治理缺... 本文是对联合国教科文组织《生成式人工智能教育与研究应用指南》的系列解读第二篇,着重讨论生成式人工智能及其教育应用引发的基本争议。“基于工作过程”技术缺陷,生成式人工智能已引发加速数据贫穷、技术不透明导致服务辖区内治理缺失、未经许可搜集训练用数据、模型架构不可解释、基础模型不理解真实世界、生成的信息污染互联网、强势价值观投射、助长违法性深伪等多重争议。生成式人工智能会对平等、包容、学习主体能动性、价值观及语言文化多样性、知识建构的多元性等教育核心价值产生直接而深远的冲击,而这些核心价值应被秉承为考证生成式人工智能教育适用性的逻辑基点。决策者和实践者应遵循“优先管制、确保包容、引导应用”的逻辑路径,强化全系统监管法规和执法能力,确保教育生成式人工智能生态系统安全可信、自主可控、本地适用,进而通过能力建设和实践指导等措施引导合理的教育应用实践。 展开更多
关键词 生成式人工智能 内容加工 训练数据集来源 公平、包容及语言文化多样性
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深层—超深层走滑断裂带储层流体来源与油气成藏过程研究——以塔里木盆地富满油田为例
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作者 薛一帆 文志刚 +5 位作者 黄亚浩 张银涛 乔占峰 张天付 李梦勤 王彭 《油气藏评价与开发》 CSCD 北大核心 2024年第4期549-559,共11页
以富满油田北部走滑断裂带深部储层孔洞缝充填脉体为研究对象,基于脉体的岩相学特征、微区稀土元素和Sr(锶)同位素、油包裹体荧光光谱、显微热力学和碳酸盐岩U-Pb同位素定年进行分析。结果表明:富满油田北部走滑断裂带发育2期方解石脉体... 以富满油田北部走滑断裂带深部储层孔洞缝充填脉体为研究对象,基于脉体的岩相学特征、微区稀土元素和Sr(锶)同位素、油包裹体荧光光谱、显微热力学和碳酸盐岩U-Pb同位素定年进行分析。结果表明:富满油田北部走滑断裂带发育2期方解石脉体,脉体来源于中下奥陶统海源地层水,未见氧化性流体侵入,表明深层—超深层油气晚期具有良好的封闭性。通过包裹体测温投点埋藏史结合碳酸盐岩低U-Pb同位素定年技术,厘定塔里木盆地富满油田北部走滑断裂带深层奥陶系存在3期油气充注过程,分别对应于距今(459±7.2)Ma(加里东中期)、(348±18)Ma(海西早期)和268Ma(海西晚期),富满油田北部深层—超深层碳酸盐岩油气成藏关键期为海西早期,且油气充注与断裂活动有较好的对应关系。 展开更多
关键词 塔里木盆地 富满油田 油气成藏 流体包裹体 U-PB同位素定年 流体演化
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不同碱度渣对42CrMoS4钢中硫化物的影响
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作者 王旭冀 潘锡泉 +1 位作者 杨庚朝 黄振华 《特殊钢》 2024年第2期56-60,共5页
为研究不同精炼工艺对齿圈钢42CrMoS4钢中硫化物的影响,从钢中硫化物的形态与分布着手,在精炼工序设计两种不同的碱度渣和钙含量工艺,试验生产4炉。对比分析铸坯和轧材中不同双层结构复合硫化物特征与硫化物形成机理。结果表明,LF造高... 为研究不同精炼工艺对齿圈钢42CrMoS4钢中硫化物的影响,从钢中硫化物的形态与分布着手,在精炼工序设计两种不同的碱度渣和钙含量工艺,试验生产4炉。对比分析铸坯和轧材中不同双层结构复合硫化物特征与硫化物形成机理。结果表明,LF造高碱度渣(R=6.5~7.2)进RH后不进行钙处理,铸坯1/4厚度位置复合硫化物整体成块状形貌,核心内部氧化物同样也成规则的块状,轧材内部氧化物主要以CaO为主,外围硫化物主要是高CaS比例的(Ca,Mn)S,基本不变形,A类细系夹杂物级别为2.0~3.0级;在LF造弱碱度渣(R=3.6~4.2)进RH后进行二次钙处理,将w[Ca]由0.001 4%左右提升至0.002 5%~0.003 2%,铸坯1/4厚度位置复合硫化物整体成椭球状形貌,核心内部氧化物同样也成规则的球状,轧材内部氧化物为较低CaO比例的钙镁铝酸盐,外围硫化物主要是低CaS比例的(Ca,Mn)S,硫化物成纺锤状,具有很好的变形能力,A类细系夹杂物级别控制在2.0级以内。 展开更多
关键词 硫化物 钙处理 纺锤状 渣碱度 精炼工艺 夹杂物
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脱氧工艺对车轮钢洁净度与大型夹杂物形成的影响
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作者 翟万里 马建超 +2 位作者 张洪才 肖梦旋 王晓峰 《现代交通与冶金材料》 CAS 2024年第6期52-55,67,共5页
通过炼钢工业试验,研究了高硅系列车轮钢采用不同的脱氧工艺对钢的洁净度与大型夹杂物产生的影响,得出如下结论:冶炼全程限制铝脱氧、采用碱度1.8~3.0精炼渣系、钢的成品Al控制在0.006%~0.010%的脱氧造渣工艺方案1,精炼炉渣氧化性较高,... 通过炼钢工业试验,研究了高硅系列车轮钢采用不同的脱氧工艺对钢的洁净度与大型夹杂物产生的影响,得出如下结论:冶炼全程限制铝脱氧、采用碱度1.8~3.0精炼渣系、钢的成品Al控制在0.006%~0.010%的脱氧造渣工艺方案1,精炼炉渣氧化性较高,钢中氧含量较高,钢中内生夹杂物为CaO⁃SiO_(2)⁃Al_(2)O_(3)⁃MgO类复合物,易因浸入式水口上夹杂物的大量聚集而产生大型夹杂物。冶炼全程使用铝脱氧、采用碱度3.5~3.0精炼渣系、钢的成品Al控制在0.013%~0.018%的工艺方案2,精炼炉渣氧化性较低,钢中氧含量较低,钢中内生夹杂物为CaO⁃Al_(2)O_(3)⁃MgO复合物,浸入式水口上夹杂物聚集而产生大型夹杂物的风险较低。 展开更多
关键词 脱氧工艺 大型夹杂物 炉渣碱度 AL含量 夹杂物成分
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基于基准关联度与信息熵权法优选桂枝配方颗粒中挥发性成分的β-环糊精包合工艺
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作者 陈雅茜 李卓远 +6 位作者 陶琳 陈娜娜 柯益鑫 沈雯 谢薇 张雯 李俊松 《南京中医药大学学报》 CAS CSCD 北大核心 2024年第6期582-588,共7页
目的结合基准关联度与信息熵权法,采用正交试验对β-环糊精(β-Cyclodextrin,β-CD)与桂枝配方颗粒中挥发性成分的包合工艺进行优化。方法在单因素考察的基础上,选择β-CD与桂枝芳香水的投料比、包合温度、包合时间为主要影响因素,以包... 目的结合基准关联度与信息熵权法,采用正交试验对β-环糊精(β-Cyclodextrin,β-CD)与桂枝配方颗粒中挥发性成分的包合工艺进行优化。方法在单因素考察的基础上,选择β-CD与桂枝芳香水的投料比、包合温度、包合时间为主要影响因素,以包合物中桂皮醛的包合率、载药量及基准关联度为评价指标,采用信息熵权法计算各评价指标的权重系数,进行综合评价和优化正交试验包合工艺。通过薄层色谱法、紫外可见吸收光谱、傅里叶红外光谱、X射线衍射等方法对包合物进行表征。结果优选的最佳包合工艺为β-CD与芳香水的投料比3∶100(g·mL^(-1)),包合温度50℃,包合时间1 h。经验证,桂皮醛包合率为80.48%,载药量为8.63%,基准关联度为0.91。薄层、紫外、红外等表征实验表明芳香水中挥发性成分成功进入β-CD空腔,包合物制备成功。结论优选的包合工艺稳定可行,可为桂枝配方颗粒的制剂工艺研究提供参考。 展开更多
关键词 桂枝配方颗粒 芳香水 Β-环糊精 信息熵权法 基准关联度 正交试验 包合工艺
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热轧加热对无取向硅钢中AlN和MnS析出相的影响
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作者 左锐 陆勤阳 +4 位作者 刘志鹏 李娜 王永强 夏雪兰 裴英豪 《安徽工业大学学报(自然科学版)》 CAS 2024年第4期412-422,共11页
AlN和MnS等析出相对无取向硅钢的磁性能有重要影响,受热轧加热工艺影响,无取向硅钢中的析出相与免常化工艺实现的效果紧密相关。以1.5%Si-0.3%Al无取向硅钢锻造坯为研究对象,利用热力学软件计算钢中可能的析出相,使用箱式电阻炉在不同... AlN和MnS等析出相对无取向硅钢的磁性能有重要影响,受热轧加热工艺影响,无取向硅钢中的析出相与免常化工艺实现的效果紧密相关。以1.5%Si-0.3%Al无取向硅钢锻造坯为研究对象,利用热力学软件计算钢中可能的析出相,使用箱式电阻炉在不同温度和保温时间下对实验钢进行热轧加热实验,利用光学显微镜(OM)、扫描电子显微镜(SEM)表征分析析出相的形貌、尺寸及样品晶粒尺寸,研究热轧加热温度和保温时间对实验钢中AlN和MnS析出相的影响。结果表明:实验钢中夹杂物主要为AlN和MnS,当加热温度为1050℃时,保温时间由1h延长至3 h,细小的AlN和MnS析出相(直径小于1μm)占比由33%降至19%,平均晶粒尺寸从100.0μm增加到149.7μm;保温时间为1h时,加热温度由1050℃提高至1150℃,细小的AlN和MnS析出相占比由33%降至7%,平均晶粒尺寸从100.0μm增加到124.3μm。不改变其他实验条件,热轧加热温度的提高与保温时间的延长都会使实验钢中AlN和MnS析出相与晶粒尺寸变大,有利于绿色低碳的无取向硅钢免常化生产工艺的实现。 展开更多
关键词 无取向硅钢 加热工艺 夹杂物 晶粒尺寸 析出相 绿色低碳
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基于AHP-熵权法与Box-Behnken优化陈皮挥发油提取及包合工艺
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作者 许玲 岳亚楠 +2 位作者 牛晓静 吴延娆 段晓颖 《亚太传统医药》 2024年第3期53-59,共7页
目的:筛选陈皮挥发油最佳提取、包合工艺。方法:运用Box-Behnken响应面设计法优化陈皮挥发油提取工艺;采用层次分析法(AHP)-熵权法和L 9(34)正交实验,以羟丙基-β-环糊精与挥发油的比例、包合温度、包合时间为影响因素,以含油率、包合... 目的:筛选陈皮挥发油最佳提取、包合工艺。方法:运用Box-Behnken响应面设计法优化陈皮挥发油提取工艺;采用层次分析法(AHP)-熵权法和L 9(34)正交实验,以羟丙基-β-环糊精与挥发油的比例、包合温度、包合时间为影响因素,以含油率、包合物得率和包合率为评价指标,优选陈皮挥发油最佳包合工艺。结果:挥发油最佳提取工艺为液料比为10∶1、浸泡时间为1.5 h、提取时间为4 h。挥发油最佳包合工艺为羟丙基-β-环糊精与挥发油的比例为6∶1,包合温度30℃,搅拌时间为1 h。结论:优化得到的陈皮挥发油提取及包合工艺,稳定可靠,能够为工业化生产提供依据。 展开更多
关键词 陈皮挥发油 提取及包合工艺 Box-Behnken AHP-熵权法
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互惠规范视角下包容性人力资源管理实践对员工回报行为的影响机制研究
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作者 瞿皎姣 曾颢 曹霞 《管理学报》 CSSCI 北大核心 2024年第9期1312-1322,共11页
基于社会交换理论的互惠视角,通过对179家企业共1 095名员工的3阶段问卷调查,探讨了包容性人力资源管理实践对员工回报行为的作用机制和边界条件。研究结果表明:包容性人力资源管理实践正向影响员工的互惠规范感知;互惠规范感知在包容... 基于社会交换理论的互惠视角,通过对179家企业共1 095名员工的3阶段问卷调查,探讨了包容性人力资源管理实践对员工回报行为的作用机制和边界条件。研究结果表明:包容性人力资源管理实践正向影响员工的互惠规范感知;互惠规范感知在包容性人力资源管理实践与员工的突破式创新投入、包容性人力资源管理实践与助人行为的关系中起中介作用;平衡型领导削弱了包容性人力资源管理实践通过互惠规范感知激发突破式创新投入和助人行为的中介作用,当平衡型领导水平较高时,该中介效应会减弱,说明平衡型领导与包容性人力资源管理实践存在替代效应。 展开更多
关键词 包容性人力资源管理实践 互惠规范感知 突破式创新投入 助人行为 平衡型领导
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高硅钢不同脱氧工艺下精炼渣系控制
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作者 弓涛 庞炜光 +3 位作者 刘庆 王现辉 冀建立 王敏 《现代交通与冶金材料》 CAS 2024年第2期21-27,共7页
针对“转炉→RH精炼→连铸”工艺流程生产的高硅钢精炼渣精准控制的难题,借助FactSage7.2商业热力学计算软件,计算了两种不同脱氧工艺下合理的精炼渣系控制范围。采用A脱氧工艺(铝脱氧硅合金化工艺)时,合理精炼渣系控制范围为氧化钙含量... 针对“转炉→RH精炼→连铸”工艺流程生产的高硅钢精炼渣精准控制的难题,借助FactSage7.2商业热力学计算软件,计算了两种不同脱氧工艺下合理的精炼渣系控制范围。采用A脱氧工艺(铝脱氧硅合金化工艺)时,合理精炼渣系控制范围为氧化钙含量为53%~55%,二氧化硅含量在15%~18%,三氧化二铝含量为25%~30%,氧化镁含量为3%~5%,碱度为3~5;采用B脱氧工艺(硅脱氧铝合金化工艺)时,合理的精炼渣系的主要成分范围为:氧化钙含量为53%~56%,二氧化硅含量为12%~17%,三氧化二铝含量为25%~30%,氧化镁含量为3%~5%,碱度为3~4.5。采用工业两种对不同脱氧工艺精炼渣系吸附夹杂能力进行分析,结果表明B脱氧工艺下夹杂物数量、尺寸分布方面均优于A脱氧工艺。 展开更多
关键词 高硅钢 渣系 夹杂物吸附 脱氧工艺 氧氮含量
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