Thermodynamic Database and Alloy Design in some Oriented Silicon Steel Systems

硅钢亦称电工钢，是电力和电讯工业用以制造发电机、电动机、变压器、互感器、继电器以及其它电器仪表的重要磁性材料。相图是材料设计的重要理论基础，在金属材料成分设计中有重要应用，因此，有必要掌握取向硅钢的相图和热力学信息。本论文通过实验测定和热力学计算两种途径，对取向硅钢部分铁基相平衡进行了实验测定和热力学计算，主要研究工作如下： (1)实验测定了Fe-Si-Zr三元系在1000℃和1100℃时全成分范围的等温截面相图，并且发现一个新相。基于本研究的实验结果和文献报道的实验计算数据，利用CALPHAD技术，对Fe-Si-Zr三元系相图进行了热力学优化与计算。 (2)实验测定了Fe-Si-Mn和F...The phase diagram is an important theoretical basis for materials design, which plays an important role on the designing composition of metal material. Therefore, it is necessary to acknowledge phase diagram and thermodynamic information of oriented silicon steel. The experimental determination and thermodynamic assessment of phase equilibria in the partial Fe-based alloys of oriented silicon stee...学位：工学硕士院系专业：材料学院_材料加工工程学号：2072010115005

厦—泉—漳城市群重大工程建设对区域地质环境影响评估的对策研究

以海峡西岸经济区城市群协调发展为背景,以厦—泉—漳城市群建设为例,介绍了城市群建设发展、正在施工项目和规划建设的重大工程等整体概况;从福建东南沿海区域地质环境、评估指标体系与评估模型、影响评估方法及计算机评估软件、地质环境修复等四个不同方面,系统提出重大工程建设对地质环境影响研究对策、研究方法和技术手段。研究对厦—泉—漳城市群和其他沿海城市群的规划发展和建设具有参考价值,对维护区域地质环境系统平衡、实现海峡西岸经济区城市群可持续发展、协调重大工程建设与地质环境保护关系等具有重要的理论和现实意义

社会资本与城乡居民的心理健康

CGSS2005年全国城乡居民生活综合研究的调查数据在用因子分析和线性回归模型进行分析后表明,在个体的基本人口学特征中,性别、年龄、受教育程度、婚姻状况和个人收入都与城乡居民的心理健康水平显著相关,而是否党员、户口对心理健康的影响不具有统计显著性。在控制了被访者的基本人口学变量后,居民的社会资本对个体的心理健康存在影响,表现在政治参与因子、邻里关系因子、信任因子和社团参与因子对心理健康的影响都具有统计显著性。国家社科基金青年项目“云南边疆民族地区群体性事件治理研究”(项目号:15CSH047);; 云南大学人文社会科学青年研究基金项目“云南边疆民族地区群体性事件处置的‘群众工作法’研究”的阶段性成

我国政府税外收费的实证分析

我国政府税外收费的实证分析□杨斌胡学勤从性质上看，一国的财政收入包括税收、利润、公债、收费四种形式，其中规范性的政府税外收费应该只包括管理性收费和惩罚性收费两种类型，但我国目前政府税外收费中大量存在的是不合理不规范的行政性收费的形式，并由此滋生出许多..

Somatotype study of the Tunguska living in China

体型是对身体形状和组成成分的描述,影响人的生理机能、运动素质、心理情感、职业选择等多方面,可帮助评价个体生长发育状况并指导健康成长,因而具有重要; 的实际意义。通古斯族群的起源、迁移及各民族之间亲缘关系问题历来为学者所关注和争论。本研究在辽宁、黑龙江、和内蒙古自治区随机抽取辽宁满族、黑龙江满; 族、鄂伦春族、鄂温克族、赫哲族成人人群(男女皆有)进行Heath-Carter法体型研究,探讨中国境内通古斯人群的体型特点及规律,为分析中国境内; 通古斯人群的亲缘关系提供体质人类学方面的证据。Somatotype analysis involves the description about body shape and; composition, which can affect, for example, physical function, sport; capabilities, mental emotions, and career choice. Additionally; somatotype can help in evaluating an individual's growth and; development, leading them to healthy growth. There have always been; debates about the origin, migration, and kinship of the Tunguska. This; paper uses the Heath-Carter somatotype method for the Liaoning Manchu,; Heilongjiang Manchu, Oroqen, Ewenki, and Hezhen adults (both males and; females) who were chosen randomly from the autonomous regions of; Liaoning, Heilongjiang and Inner Mongolia. This study discusses these; somatotype characteristics of the Tunguska and analyzes the kinship of; this group in China

Flame Characteristics and Burning Rate of Typical Solid Fuel Under Reduced Gravity

利用实验时间为2.2 s，低重力水平为l0-2 90简易实验系统，对易升华典型固体燃料试样从常重力到低重力环境过渡的瞬态燃烧过程进行了实验研究，考察了火焰形态、火焰亮度和温度以及燃料试样燃烧速率受重力水平影响的变化趋势，结果表明，随着重力水平的变化，火焰从常重力环境中的湍流扩散火焰，过渡为低重力环境中的层流火焰，火焰高度、亮度和温度以及燃烧速率都随重力水平的下降而降低．由于进入低重力状态后，常重力燃烧诱导的空气流动并没有完全消失，观察到了逆风侧火焰温度、火焰平均亮度，以及燃烧速率因气流作用而回升的现象，这种现象会使低重力环境中的火灾复杂性和危害性增强

Biomass and growth analysis of Paspalum wettsteinii community in South Fujian, China

禾本科多年生牧草宽叶雀稗适宜在福建南亚热带丘陵酸性赤红壤上生长,人工种植的宽叶雀稗群落鲜草产量峰值在8月份,为4050g·m-2,生物量峰值(干重)则出现在9月份,其中地上部1398.8 g·m-2、地下部770.8g·m-2。群落全年生长呈周期性变化,生物量波动符合Logistic曲线:y=1634.46/(1+e2.67976-1.3.369×10-2t)。根据9月份最高现存量估计,其年净第一性生产力为2169.6g·m-2·a-1。群落生长分4个阶段:缓慢增长(2～4月)、加速增长(5～6月)、减速增长(7～9月)、生长停滞和下降(10～12月)。降雨量是影响生物量的重要因素,二者呈显著线性正相关,相关系数为0.9783,回归方程为y=-74.3779+0.9480x。Paspalum wettsteinii Hackel, a kind of perennial herbages of Graminaea, was proved to get good adaptation to hilly crimson soil in the southern part of subtropical zone in Fujian Province. Its growth curve fluctuated periodically within a year. The biomass value of above-ground part of the community reached to its highest point, 1398. 8 g m-2 in August, 1994; the under-ground part 770. 8 g m-2 in September. Biomass of the community fluctuated in accordance with the logistic curve: y=1634. 46/ (1+e2.67976-1.30369x10-2t) . The highest value of the community's fresh weights measured monthly was 4050 g m-2 (Aug. 1994) . Estimated by Peak Standing Crop in Sept. 1994, the annual NPP of the community was 2169. 6 g m-2 a-1. Through a growth analysis, the above ground part biomass of the community changes with four stages: slow increasing (Feb. -Apr. ); acceleration increasing (May-June); deceleration increasing (July-Sept. ); stagnation and descent (Oct. - Dec. ). Of all the factors that affect the biomass value, the rainfall was an important one. Their regression equation was y= - 74. 3779+0. 9480x, and the relation coefficient (r) was 0. 9783

The metabolic profilings study of serum and spinal cord from acute spinal cord injury rats ^1H NMR spectroscopy

目的：采用-1H NMR核磁共振代谢组学的方法研究急性脊髓损伤模型大鼠的代谢组学特征及生物标志物,探讨核磁共振代谢组学应用于脊髓损伤研究的可行性。方法：取8周龄清洁级雄性SD大鼠20只,体重（200±10）g,按照随机数字法分为假手术组和模型组,每组10只,模型组采用改良的Allens法制作急性脊髓不完全损伤模型,假手术组不损伤脊髓,术后第1、5、7天采用BBB运动功能评分法进行行为学观察,术后第7天收集脊髓组织作病理学观察,核磁共振代谢组学对两组大鼠血清和脊髓样本进行代谢组学分析。结果：BBB评分显示假手术组术后后肢运动无明显改变,各时间点差异无统计学意义,模型组大鼠术后双下肢呈迟缓性瘫痪,BBB运动评分较低,各时间点差异存在统计学意义,两组运动功能评分在各时间点的差异均有统计学意义;病理切片显示假手术脊髓结构正常,神经分布均匀,模型组脊髓组织结构紊乱,神经元数目减少,存在炎性细胞浸润和空腔坏死组织。代谢组学分析表明,血清中极低密度脂蛋白（VLDL）、低密度脂蛋白（LDL）、谷氨酰胺（glutamine）、柠檬酸（citrate）、二甲基甘氨酸（DMG）等物质和脊髓中谷胱甘肽（glutathione）、3-羟基丁酸（3-OH-butyrate）、N-乙酰天冬氨酸（NAA）、磷酸胆碱（GPC）、谷氨酸（glutamate）、抗坏血酸（ascorbate）等物质浓度有明显变化（P〈0.05）。结论 ：通过对假手术组和模型组大鼠血清和脊髓样本进行代谢组学检测和分析得到了两组样本的差异性代谢物质,有助于解释急性脊髓损伤后血清和脊髓组织中的特异性小分子物质的变化规律,为后期针对性地研究这些代谢标记物在急性脊髓损伤中的作用提供研究基础。Objective： To establish the rat model of acute spinal cord injury,followed by aprimary study on this model with 1H NMR based on metabonomics and to explore the metabonomics and biomarkers of spinal cord injury rat.Methods： Twenty eight-week-old adult male SD rats of clean grade,with body weight of （200±10） g,were divided into sham operation group and model group in accordance with the law of random numbers,and every group had 10 rats. The rats of sham operation group were operated without damaging the spinal cord,and rats of model group were made an animal model of spinal cord incomplete injury according to the modified Allen＇s method. According to BBB score to observate the motor function of rats on the 1th,5th,and 7th days after surgery. Postoperative spinal cord tissue was collected in order to pathologic observation at the 7th day,and the metabolic profilings of serum and spinal cord from spinal cord injury rats were studied by 1H NMR spectroscopy.Results： The hindlimb motion of rats did not obviously change in sham operation group,there was no significant difference at each time point;and rats of model group occurred flaccid paralysis of both lower extremities,there was a significant difference at each time; there was significant differences between two groups at each time. Pathological results showed the spinal cord structure was normal with uniform innervation in shame group,while in model group,the spinal cord structure was mussy,and the neurons were decreased,with inflammatory cells and necrotic tissue. Analysis of metabonomics showed that concentration of very low density fat protein （VLDL）,low density fat protein （LDL）,glutamine,citric acid,dimethylglycine （DMG） in the serum and glutathione,3-OH-butyrate,N-Acetyl-L-aspartic acid （NAA）,glycerophosphocholine （GPC）,glutamic acid,and ascorbate in spinal cord had significant changes（P〈0.05）.Conclusion： There are significant differences in metabolic profile from serum and spinal cord sample between model group and sha浙江省自然基金（编号：LY15H270003）;浙江省中医药科技计划项目（编号：2015ZZ017

A novel, simple method for determination of Cr(Ⅲ)in environmental samples

根据Luminol H2O2 Cr(Ⅲ)体系在碱性条件下产生很强的化学发光的原理,用光电二极管作检测器测定环境样品中的Cr(Ⅲ)。本方法具有分析速度快、选择性好、检测装置结构非常简单,成本低等优点。其检测限为5.0×10-8g/mL,线性范围为5.0×10-8～5.0×10-4g/mL,相对标准偏差小于5.0%。在实际样品的分析中,取得了令人满意的结果。A novel, simple analytical procedure for determination of chromium(Ⅲ) in environmental samples with photoelectric diode detector is presented successfully, which is based on the fact that which is based on the principle that the system of luminol-H_2O_2-Cr(Ⅲ) can yield strong chemiluminescence The single analyzing time is less than 1 min.The linearity range is 5.0×10~(-8)～5.0×10~(-4) g/mL . The detection limit is 5.0×10~(-8) g/mL . The RSD is less than 5.0%(n=6). And it's detecting equipment is simple and cheap. The method has been applied to the determination of Cr(Ⅲ) in environmental samples successfully .厦门大学高等学校重点实验室访问学者基金资助;; 国家自然科学基金资助(NO.20005005

硒在海洋浮游植物生化组分中的分布

硒在海洋浮游植物生化组分中的分布杨逸萍，李河典，胡明辉（厦门大学海洋学系）关键词硒，海洋浮游植物，生化组分前言硒为中等生物制约元素。海洋浮游植物对硒的富集系数高达103~104［1］.硒沿海洋食物链的传递［1~4］表明硒在生物体内可能被结合在细胞原生...国家自然科学基