66 research outputs found

    Religious Ritual and the Inheriting of Culture:A Study in Indonesia Confucianism (Kongjiao)

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    本文主要依据从印尼实地调查所获得的文献资料以及口述、实物、音像等资料,考察近年愈益受到国际学术界关注而国内相当缺乏研究的印尼孔教,并探讨海外华人的宗教仪式传统与文化传承机制。全文共九章,约20万字。 印尼孔教源于中国的儒教,是土生华人特有的宗教形式与文化认同标志。中国儒教在印尼的传播,最初主要是通过华人的家庭教育和庙堂、宗祠的祭祀以及私塾、书院的文化教育。1900年成立的巴达维亚中华会馆,明确地定义孔教为一种宗教,指出孔教是华人文化中最主要的成分,并确立了孔教的基本教义。这是印尼历史上第一个正式的、较具规模的孔教组织,同时也是印尼华人民族意识觉醒的标志。 20世纪中叶,印尼从西方殖民地转变...By examining various sources collected from field work in Indonesia, this dissertation aims to explore Indonesia Confucianism (Kongjiao, the Teaching of Confucian, or Agama Kongfuzu), a topic that has drawn the attention of scholars, domestic and abroad, from different disciplines, and tries to discuss the inheriting of culture and its mechanism among Overseas Chinese through analyzing the history...学位:历史学博士院系专业:人文学院历史学系_中国近现代史学号:B20030202

    应用型本科高校人才培养的特色化研究——以厦门理工学院“亲产业”大学办学实践为例

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    应用型本科高校人才培养要基于应用型本科高校发展的合理定位,并在人才培养的全过程中力行特色化培养理念,还要有与之相呼应的质量管理机制予以保障应用型本科高校人才培养的特色化发展。厦门理工学院坚持“以生为本,服务产业,培养海西一流亲产业应用型人才“的办学思路,着力优化专业结构布局,使“专业链“紧密亲和“产业链“;实施“教学卓越工程“并采取一系列质量保障措施,培养亲产业应用型人才。这一办学实践是对应用型本科高校人才培养的特色化发展的探索。福建省社科项目“应用型本科人才培养质量研究”(项目编号:2011B241)的研究成果之

    载体酸碱性对高硫合成气制甲硫醇的K-Mo-Co催化剂结构和性能的影响

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    选取3种酸碱性不同的载体(γ-Al2O3,SiO2,MgO)制备由高硫合成气制甲硫醇的负载型K-Mo-Co催化剂。它们的活性高低顺序为:K2MoCo0.35O/SiO2>K2MoCo0.35O/γ-Al2O3>K2MoCo0.35O/MgO;程序升温脱附表征结果显示,这3种不同载体的催化剂与载体的酸碱性强弱顺序一致,弱酸性载体制备的催化剂对合成甲硫醇有利;H2程序升温还原和激光Raman光谱表征结果显示,碱性载体制备的催化剂中,Mo以易于还原和硫化的八面体构型存在,硫化后主要以MoS2存在;弱酸性载体制备的催化剂中,Mo以难于还原和硫化的四面体构型存在,硫化后主要以氧硫钼物种存在,这些物种与合成甲硫醇密切相关

    Study on quality standard of Minghuanggao gel

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    目的:研究明黄膏质量标准。方法:采用薄层色谱(TLC)法对明黄膏中的主要成分大黄、黄连、苦参进行定性鉴别;高效液相色谱(HPLC)法测定明黄膏中大黄酚的含量。结果:TLC色谱中均能明显地检出大黄、黄连、苦参;HPLC法测得本品中大黄酚的含量为0.267~0.308 mg·g-1;在10.02~100.16 mg·L-1的范围内,溶液的浓度与峰面积呈良好线性关系,r=0.999 9;加样平均回收率为98.48% (n=6),RSD为1.20%。结论:本品定性、定量方法简便、准确,专属性强,质量标准能够控制该制剂的内在质量。OBJECTIVE To study the quality standard of Minghuanggao gel. METHODS Radix et Rhizoma Rhei, Rhizoma Coptidis and Radix Sophorae Flavescentis in Minghuanggao gel were identified by TLC. The content of chrysophanol in this preparation was determined by HPLC. RESULTS Radix and Rhizoma Rhei, Rhizoma Coptidis and Radix Sophorae Flavescentis in Minghuang-gao gel could be detected obviously by TLC. The content of chrysophanol in this gel was 0.267 - 0.308 mg·g -1 . The linear ranges were 10.02 - 100.16 mg·L -1 with good positive correlation. The average recovery of chrysophanol was 98.48% ( n =6),RSD= 1.20% . CONCLUSION TLC is a simple, method HPLC is accurate and reliable method. The quality standard can be used for quality control of this product.甘肃省科技厅中青年科技基金资助项目(编号:YS 011 A23 015

    钾修饰的MoO_3/SiO_2催化剂的XRD和TPR表征

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    采用XRD和TPR测试技术表征了一系列不同K与Mo摩尔比的MoO3/K2O/SiO2催化剂。XRD表征结果显示,随着元素K的加入,多钼物种逐渐被破坏,最终形成了单钼的K2MoO4物种。TPR表征显示,催化剂表面的钼物种有2种结构,即八面体的Mo(Oh)和四面体的Mo(Td)。八面体Mo(Oh)的还原峰在770 K附近,而四面体Mo(Td)还原峰在1 000 K附近;无K的MoO3/SiO2催化剂的低温还原峰出现在840 K,少量元素K的添加削弱了Mo与SiO2之间的作用,使得低温还原峰温度降低到770 K附近;随着元素K添加量的进一步增加,Mo(Oh)物种逐渐减少而Mo(Td)物种逐渐增多,从而使得催化剂表面的Mo更难被还原。高硫合成气制甲硫醇的活性随着钼基催化剂八面体(Oh)钼物种的增加而增加

    高硫化氢合成气制甲硫醇新型钼基催化剂研究

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    研究了一系列负载型钼基催化剂催化含高硫化氢合成气制甲硫醇的性能 ,用XPS和ESR对其进行表征 .活性测试显示 ,钾促进的钼基催化剂催化的反应产物中甲硫醇成为主导产物 .几种钼基催化剂合成甲硫醇的活性大小顺序 :K2 MoO4/CoO/SiO2 >K2 MoO4/SiO2 >MoO3 /K2 CO3 /SiO2 >K2 MoS4/SiO2 >MoS2 /K2 CO3 /SiO2 .ESR表征显示 ,反应后的催化剂可以检测到“oxo Mo(V)”和“thio Mo(V)”物种 .XPS表征显示反应后催化剂中的Mo包含着Mo4+ ,Mo5+ 和Mo6+ ,S包含着S2 -,(S—S) 2 -和S6+ 三种价态 .添加CoO后 ,“oxo Mo(V)”含量减少 ,而“thio Mo(V)”含量增加 ,(S—S) 2 -物种的生成得到抑制 ,S2 -物种的量增多 .(Mo4+ +Mo5+ ) /Mo6+ 峰强度比为 0 75以及S2 -/(S—S) 2 -接近 1有利于甲硫醇的生成 .本文提出甲硫醇的合成与“Mo S K”相关联的反应机

    Effect of Thermal Treatment on Structure and Catalytic Performance of K_2MoO_4-NiO/SiO_2 Catalyst for One-Step Synthesis of Methanethiol from High H_2S-Containing Syngas

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    王 琪. Tel: (0551)2901458; Fax: (0551)2901450; E-mail: [email protected][中文文摘]在不同焙烧温度和焙烧气氛下对共浸渍法制备的K2MoO4-NiO/SiO2催化剂进行热处理,并采用X射线衍射、热重-差示扫描量热、氢气程序升温还原、拉曼光谱和电子自旋共振波谱等手段对催化剂进行了表征,同时考察了催化剂催化高硫化氢合成气一步法制甲硫醇的性能.结果表明,由于催化剂中所含柠檬酸氧化放热,空气中焙烧的催化剂发生严重烧结.随着焙烧温度的升高,八面体配位的Mo(Oh)逐渐向四面体配位的Mo(Td)转变,导致催化剂的还原能力降低,配位不饱和Mo(CO吸附位)减少,因而CO转化率降低.甲硫醇的生成与Mo–S–K相密切相关,而MoS2晶相表面主要生成烃类.与氮气中焙烧的催化剂相比,空气中焙烧的催化剂表面的MoS2相较多,而Mo–S–K相较少,因此具有更高的烃类选择性和更低的甲硫醇选择性. [英文文摘]K2MoO4-NiO/SiO2 catalyst samples prepared by the co-impregnation method were calcined at different temperatures and atmosphere. X-ray diffraction, thermal gravimetric-differential scanning calorimetry, hydrogen temperature-programmed reduction, Raman spectroscopy, and electron spin resonance techniques were used to characterize the catalyst samples. The catalytic performance of the catalyst for one-step synthesis of methanethiol from high H2S-containing syngas was evaluated. The results showed that the catalyst calcined in air sintered seriously because of the heat release from citric acid oxidation. With the increase of calcination temperature, octahedral coordination Mo(Oh) gradually changed into tetrahedral coordination Mo(Td), which made the reduction of Mo6+ more difficult, decreased the number of CO adsorption sites (coordinatively unsaturated sites) of Mo, and at last led to the decrease of CO conversion. Methanethiol synthesis was closely related to the Mo–S–K phase, and hydrocarbon synthesis was related to the MoS2 phase. Compared with the catalyst calcined in N2, there were more MoS2 phase and less Mo–S–K phase on the surface of the catalyst calcined in air, resulting in the higher selectivity for hydrocarbon and lower selectivity for CH3SH

    Novel Mo-based catalysts for methanethiol synthesis from high H2S-containing syngas

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    A series of supported Mo-based catalysts for methanethiol synthesis from high H2S-containing syngas were investigated by kinetics and XPS, ESR characterization. The activity evaluating results show that upon the potassium-promoted Mo-based catalysts, the methanethiol will become dominant product of the reaction, and the activity sequence of several Mo-based catalysts for the reaction is as follows: K2MoO4/CoO/SiO2 > K2MoO4/SiO2 > MoO3/K2CO3/SiO2 > K2MoS4/SiO2 > MoS2/K2CO3/SiO2. In the ESR characterization of the catalysts used the resonant signals of "oxo-Mo(V)" and "thio-Mo(V)" can be detected. The XPS characterization indicates that mixed valence Mo species Mo4+, Mo5+ and Mo6+ and three kinds of S species S2-, (S-S)(2-) and S6+ exist in the catalysts. As a promoter CoO was introduced into Mo-based catalysts. It was observed that the addition of CoO leads to decrease of the amount of "oxo-Mo(V) " in the catalysts, but increase of the amount of "thio-Mo(V)", which may be connected with "Mo-S-K" phase or "Co-Mo-S-K" phase, meanwhile CoO in die catalyst was found to enhance the formation of S2-, but inhibit the formation of (S-S)(2-). It was found also that the methanethiol synthesis is favored if the peak intensity ratios of (Mo4+ + Mo5+)/Mo6+ and S2-/(S-S)(2-) are kept at about 0.75 and 1 level respectively. A possible mechanism about the relationship of CH3SH formation with "Mo-S-K" phase was proposed

    Studies on Preparation of Porous Carbons by Using Non-metallic Minerals as Templates

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    模板法是公认的能够有效控制多孔炭孔结构的方法。最近几年,模板法制备多孔炭的研究取得了较大进展。但迄今为止,人们使用的模板主要是以人工合成的多孔材料为主,以此类材料为模板制备得到的多孔炭的成本很高,制约了模板炭的生产和应用。另外,有关制备工艺条件对多孔炭的孔结构和性能的影响、模板的结构与多孔炭孔结构的关系以及多孔炭纳米孔结构的形成机理等方面还存在许多未知之处,需要进一步探讨和研究。 为了降低多孔炭材料制备成本和有效利用非金属矿物资源,探索制备模板多孔炭的工艺条件对多孔炭材料纳米孔形成的影响,揭示模板多孔炭纳米孔形成的规律和机理等问题,本论文开展了多孔矿物模板法制备多孔炭的研究:选择三类重要的具有代表性的非金属矿埃洛石、沸石矿和硅藻土代替人工合成的多孔物质作为模板,分别使用糠醇和蔗糖为炭源,采用模板法制备出了几种结构和性能不同的多孔炭材料;研究了催化剂、浸渍压力、浸渍次数、浸渍温度、炭源浓度和炭化温度等工艺参数对所得多孔炭材料结构、吸附性能和形貌的影响规律;利用多种先进分析手段如EDS、XRD、SEM、TEM、N2吸附、TG-DTA和FT-IR等表征了样品的元素组成、微晶结构、形貌、比表面积和孔结构等。作为对比,选择了人工合成的沸石(X型沸石和Y型沸石)为模板制备了多孔炭,并对实验中的样品进行了分析表征。 结果表明,以非金属矿为模板可以制备出较高比表面积、较窄孔径分布、中孔占优的多孔炭材料,大大降低了制备模板多孔炭的成本,拓展了无机非金属矿的应用范围;多孔炭的形貌和孔结构都与相应模板的形貌和孔结构之间存在很好的相关性,可在纳米级水平折射出模板的形貌和孔道特征;比表面积和孔容高的矿物,相应得到的多孔炭的比表面积和孔容也高;三类矿中,埃洛石为模板和盐酸处理后的沸石矿为模板制得的多孔炭具有大的总孔容和高的中孔率,其中埃洛石为模板时制得的多孔炭的比表面积可达1270 m2/g,总孔容可高达2.50 cm3/g,中孔率可高达86%;较低的炭源浓度有利于获得较高比表面积的多孔炭,加压浸渍可以提高多孔炭的比表面积和中孔率、增大多孔炭的总孔容和中孔孔容;发现以800℃焙烧后的埃洛石为模板、糠醇为炭源时制得的多孔炭的炭体上具有明显丰富的中孔;炭化温度对模板多孔炭的孔结构和形貌都有重要影响;以简单处理的沸石矿为模板,蔗糖为炭源时,浸渍过程中硫酸用量对模板多孔炭的孔结构和形貌有重要影响。其中,沸石矿为5.0 g、蔗糖为12.5 g,去离子水为50ml,硫酸用量为1.4 g时所得多孔炭的BET比表面积和总孔容最大,最大值分别是650 m2/g和0.68 cm3/g。 在分析了矿物模板炭纳米孔形成机理的基础上,探索性地提出了模板多孔炭纳米孔形成模型并通过实验结果验证了模型的合理性。模板多孔炭的纳米孔主要由三部分组成:一是脱除模板后产生的“复制孔”;二是由于模板孔道未被含炭物质完全填充而在多孔炭中留下的“继承孔”;三是在炭化过程中形成的纳米孔。三种孔的形成都与模板的作用密切相关

    Experimental study of mechanical properties of gas hydrate deposits

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    利用研制的天然气水合物沉积物合成及力学性质一体化试验设备,以粉细砂土作为土骨架,分别对冰沉积物以及对四氢呋喃(THF)、二氧化碳(CO_2)和甲烷3种水合物沉积物进行了室内合成和三轴剪切试验,分析和比较了这4种沉积物样品的应力-应变和强度特性,初步探究了冰和不同气体在水合物沉积物强度中所起的作用. 试验结果表明:4种沉积物均表现为塑性破坏;围压越大,水合物沉积物强度越高;在水合物含量相同条件下,不同气体水合物会使水合物沉积物的强度不
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