Design and Implementation of Soil and Water Loss Monitoring System for Small Watershed Based on GIS

目前，国内在水土流失方面的情况最严重的当属贵州省，一系列环境问题由水土流失引发出来，比如土地营养流失等，这些造成了贵州省经济发展的不持续性，因此，为了解决土壤退化问题，降低水土流失程度，加强环境与生态建设力度，成了贵州省经济发展的重中之重。旨在开发与管理水土流失的系统动态，方便客户浏览、查找、分析和使用等作用，论文研究并分析了GIS同水土保持等一系列相关的管理技术问题，为今后实现数据化管理提供了一定的基础，同时也符合国内当前的经济发展方向，因此该项研究有着很重要的意义。 本文的研究地点取于贵州省的怀仁市，以GIS技术为基础研究小流域地区的水土流失问题，运用关系型数据库Oracle9i和Map...At present, the domestic in the most serious soil erosion in aspects of the situation is in Guizhou Province, a series of environmental problems caused by soil erosion, such as land loss of the nutrition, these caused no continuity, the economic development of Guizhou Province, therefore, in order to solve the problem of soil degradation, low degree of soil and water loss reduction, strengthening ...学位：工程硕士院系专业：软件学院_工程硕士(软件工程)学号：X201223092

Synthesis, Characterization and Photovoltaic Effect of Porphyrin-Fullerene Compounds MP-C_(60)

The convalently linked porphyrin-fullerene ligand was synthesized by 1,3 dipolar cycloaddition reaction. The ligand and complexes were characterized by means of FT-IR, Uv-Vis, ~1HNMR, ESI-MS and elemental analysis. The photoelectricity transform performance of the compounds was studied.The result indicated that the photovoltaic effect of (n+n) heterojunction electrode formed by MP-C_(60)/GaAs was super, especially in the I_2/I_3~- and O_2/H_2O redox couples, and photovoltaic potential was preferable.The photovoltaic performance of a MP-C_(60)/GaAs electrode at 1-2 μm thinck MP-C_(60) film of appeared peak value.ProjectsupportedbytheNatureScienceFoundationofFujianprovince(E0410001)andSelf-selectProgramofXiamenUniversity(0040-Y07008)

Synthesis, characterization and photovoltaic effect of porphyrin-fullerene compounds MP-C-60

The convalendy linked porphyrin-fullerene ligand was synthesized by 1, 3 dipolar cycloaddition reaction. The ligand and complexes were characterized by means of FT-IR, Uv-Vis, (HNMR)-H-1, ESI-MS and elemental analysis. The photoelectricity transform performance of the compounds was studied. The result indicated that the photovoltaic effect of (n + n) heterojunction electrode formed by MP-C-60/GaAs was super, especially in the I-2/I-3(-) and O-2/H2O redox couples, and photovoltaic potential was preferable. The photovoltaic performance of a MP-C-60/GaAs electrode at 1-2 mu m thinck MP-C-60 film of appeared peak value

应用TG-FTIR研究鹤岗烟煤的热解特性

采用TG-FTIR联用技术研究了鹤岗烟煤的热解过程。研究表明,在升温速率为30℃/min时,该煤的热解过程可以分为4个阶段,其中在430～650℃区间发生剧烈热解反应,DTG曲线在489℃时出现最大值。热解气体的逸出情况由FTIR进行实时检测,并且定性分析了CH4、CO2、CO和焦油的析出情况。通过比较TG/DTG曲线和FTIR数据,发现TG和FTIR的分析结果是一致的。假定煤热解反应为一级反应模型,分不同的温度区间采用Coats-Redfern法求解煤热解反应动力学参数,计算结果与实验符合较好

应用TG-FTIR研究鹤岗烟煤的热解特性

采用TG-FTIR联用技术研究了鹤岗烟煤的热解过程。研究表明，在升温速率为30℃／min时，该煤的热解过程可以分为4个阶段，其中在430-650℃区间发生剧烈热解反应，DTG曲线在489℃时出现最大值。热解气体的逸出情况由FTIR进行实时检测，并且定性分析了CH4、CO2、CO和焦油的析出情况。通过比较TG／DTG曲线和FTIR数据，发现TG和FTIR的分析结果是一致的。假定煤热解反应为一级反应模型，分不同的温度区间采用Coats-Redfem法求解煤热解反应动力学参数．计算结果与实验符合较好

应用TG-FTIR研究鹤岗烟煤的热解特性

采用TG-FTIR联用技术研究了鹤岗烟煤的热解过程。研究表明，在升温速率为30℃／min时，该煤的热解过程可以分为4个阶段，其中在430-650℃区间发生剧烈热解反应，DTG曲线在489℃时出现最大值。热解气体的逸出情况由FTIR进行实时检测，并且定性分析了CH4、CO2、CO和焦油的析出情况。通过比较TG／DTG曲线和FTIR数据，发现TG和FTIR的分析结果是一致的。假定煤热解反应为一级反应模型，分不同的温度区间采用Coats-Redfem法求解煤热解反应动力学参数．计算结果与实验符合较好