Variability of light absorption properties in optically complex inland waters of Lake Chaohu,China

Absorption coefficients of phytoplankton, colored detrital matter (CDM), non-algal particles (NAP), colored dissolved organic matter (CDOM), and their relative contributions to total non-water absorption (a_t ? w) are essential variables for bio-optical and radiative transfer models. Light absorption properties showed large range and variability sampled at 194 stations throughout Lake Chaohu between May 2013 and April 2015. The a_t ? w was dominated by phytoplankton absorption (a_ph) and NAP absorption (a_d). The contribution of CDOM absorption to a_t ? w was lower than 30%. Phytoplankton and NAP were the primary sources of spatial and vertical variability in absorption properties. Light absorption by CDOM, though significant in magnitude, was relatively constant. CDM absorption (a_dg) was dominated by NAP. The spatial variation of the absorption coefficients from each of the optically active constituents were driven by several main inflow rivers in the western and middle part of Lake Chaohu. Algal blooms and bottom resuspension contributed to vertical variability as observed by phytoplankton and NAP profiles. Specific absorption of phytoplankton had significant spatial and seasonal variations without vertical variation. The spectral slope of absorption showed no significant spatial variability (p > 0.05). Variations of absorption affected different ranges of remote sensing reflectance (R_rs) spectrum, thereby increasing the difficulty of applying the remote sensing algorithm in optically complex waters. Parameters and relationships presented in this study provide useful information for bio-optical models and remote sensing of lakes similar to Lake Chaohu in terms of optical properties.     

水平带式真空过滤机的选择与应用

本文介绍了水平带式真空过滤机的特点和选用，特别讨论了往复盘水平带式真空过滤机的工作原理及主要特点，提出了应用实例及其发展方向。     

普通用途防撕裂钢丝绳芯输送带的研制

介绍了普通用途防撕裂钢丝绳芯输送带的研制。主要包括纵向骨架材料的选择、横向增强层（防撕裂层）的选择、覆盖胶和芯胶及贴胶配方的设计和实际生产工艺。经过试验测试，产品性能符合HG3646－1999标准。该产品已获国家专利。     

基于改进A*算法的越野路径规划研究

针对车辆的越野路径规划问题, 研究并分析了地形坡度和地表属性对于车辆路径规划的综合影响。引入了窗口移动法对地形进行先期的坡度计算和通行性分析, 就轮式车辆和履带式车辆分别建立了地表属性的粗糙度评价指标, 并采用面积占优法将地表属性栅格化。通过建立禁忌表, 叠加了坡度与粗糙度的约束影响以减少搜索范围, 提高搜索效率。构造了改进A*算法的估价函数, 并结合expand表、open表、closed表以及path表设计了考虑坡度和粗糙度约束的路径优化算法。仿真结果表明, 该算法能够快速有效地实现符合真实地形环境的越野路径规划。     

微机用于抛物线齿同步带传动强度理论的研究

采用啮合原理与弹性力学复交函数相结合的方法，借助计算机对抛物线齿同步带传动强度理论进行了系统研究，并将整个计算过程编制成ＲＨＤＧＲＡＰＨ软件。利用该软件进行了带齿和轮齿及刀具齿形设计、啮合原理分析、应力和变形计算、刀具可加工最小齿数的确定及加工误差分布计算。     

The electrochemical reduction of VO2 in acidic solution at high overpotentials

An investigation has been carried out to attempt to understand the unusually low apparent symmetry factor observed during the reduction of V(5) at higher overpotentials at carbon electrodes (typically <0.13, or >460 mV decade⁻¹). This reaction is of interest because it occurs in vanadium redox-flow batteries (VRBs) during discharge. Polarisation curves were measured using a rotating disk electrode (RDE). The reaction was not solution mass transport controlled, was pH independent (ca from 0 to 1), and the observed Tafel slope was unaffected by V(5) concentration over a range from 0.031 to 280 mM. Electrode double layer capacitance measurements were also carried out in sulphuric acid with and without vanadium. These tests showed that the presence of V(5) caused a suppression of the normal carbon surface quinone pseudocapacitance, as well as the appearance of two new pseudocapacitance peaks, one around 0.175-0.2 V and the other around 0.675-0.725 V versus SCE. The observed results do not appear consistent with a precipitated film causing diffusion limitations or causing IR drop. A model is developed to try to explain the data, which involves electron transfer through an adsorbed layer of vanadium.     

同步带成型工艺的探讨

介绍模压法橡胶同步带成型工艺流程及装备，重点阐述了耐磨布套的制作，强力层的缠绕，张力的控制及张力器原理，最佳胶层厚度控制，及它们与成品带质量的关系。     

短纤维-橡胶复合材料在输送带中的应用

介绍了以不连续的聚酯短纤维群为骨架材料，ＮＲ／ＳＢＲ为基质胶的定向短纤维橡胶复合材料（ＯＳＦＲＣ）在输送带中的应用。结果表明，ＯＳＦＲＣ输送带与棉帆布芯输送带相比，使用寿命提高１倍，带体综合物理性能好，在应力作用下不脱层，无受潮霉烂现象，输送平稳且不打滑，适宜在苛刻条件下使用。     

高陡边坡的监测与稳定性分析

从现场监测仪器获取的位移、应力方面的原始数据入手,绘制出位移、应力随时间变化的曲线图,并运用回归拟合分析方法,在综合分析开挖过程中各种影响因素以及锚固工具对边坡锚固效果的基础上,掌握了边坡的变形趋势及稳定状况。可为预测、预报及整治工程地质灾害等提供可靠的资料和科学的依据,为工程的安全进行提供理论保障。     

边坡锚固工程分析中的水平条分法

对目前中国规范推荐用于边坡加固计算的垂直条分传递系数法进行研究,发现将该方法用于边坡锚固受力分析时,不仅存在垂直条块与加固结构体（锚杆和锚索）相互交叉,而且计算得出的锚固力与加固体的实际锚固力存在偏差等缺陷。在相关资料提出的、用于加筋土稳定性分析的水平条分法基础上,结合边坡锚固工程的特点,将该水平条分法做进一步拓展,使其能适用于锚杆和锚索等边坡锚固工程的稳定性计算,并通过工程实例对拓展后的水平条分法进行了验证。