钼矿尾矿铜铅重金属离子溶出规律研究

为了评估钼矿尾矿的环境危害,通过105 d连续静态浸泡试验,定期监测钼矿尾矿浸泡液的pH值及其铜铅重金属离子浓度,研究了尾矿的离子溶出规律.结果表明,尾矿对酸性溶液有很强的中和能力,可将pH=3.5～6的酸性溶液在8 d内中和到pH=7的中性状态,并维持不变.液固比为1:10的浸泡液中Cu~(2+)和Pb~(2+)的浓度都在25 d内达到最大值(分别为29.52和9.40μg/L),此后浓度下降,并发生震荡,但Cu~(2+)和Pb~(2+)的浓度随时间的变化趋势不同.浸泡液中Cu~(2+)和Pb~(2+)的平均浓度分别为19.37和4.29μg/L,尾矿中Cu和Pb的平均溶出率分别为0.097%和0.043%.钼矿尾矿可在中性条件下长期释放Cu~(2+)和Pb~(2+),且Cu比Pb更容易溶出.     

临海市防洪堤稳定分析

防洪堤稳定分析中土体抗剪强度指标的选取对分析结果有很大的影响,通过采用简化毕肖普法分别进行三轴试验,室内浸泡试验及考虑波浪（潮汐）循环荷载作用得到的抗剪强度指标,对临海城市防江北防洪堤土提段进行了稳定性分析,经对比分析计算结果,得到了一些有益的结论。     

Two Methods,One Goal: Structural Differences between Cocrystallization and Crystal Soaking to Discover Ligand Binding Poses

In lead optimization, protein crystallography is an indispensable tool to analyze drug binding. Binding modes and non-covalent interaction inventories are essential to design follow-up synthesis candidates. Two protocols are commonly applied to produce protein–ligand complexes: cocrystallization and soaking. Because of its time and cost effectiveness, soaking is the more popular method. Taking eight ligand hinge binders of protein kinase A, we demonstrate that cocrystallization is superior. Particularly for flexible proteins, such as kinases, and larger ligands cocrystallization captures more reliable the correct binding pose and induced protein adaptations. The geometrical discrepancies between soaking and cocrystallization appear smaller for fragment-sized ligands. For larger flexible ligands that trigger conformational changes of the protein, soaking can be misleading and underestimates the number of possible polar interactions due to inadequate, highly impaired positions of protein amino-acid side and main chain atoms. Thus, if applicable cocrystallization should be the gold standard to study protein–ligand complexes.     

天然青海湖水浸泡凹凸棒石对胶体性能的影响

利用天然青海湖水浸泡凹凸棒石黏土,考察了浸泡时间对其胶体性能的影响.红外光谱(FTIR)、X-射线衍射(XRD)、扫描电镜(SEM)和Zeta电位分析以及胶体性能测试结果表明,湖水浸泡未改变凹凸棒石的晶体结构和棒晶形态,湖水中的金属离子与凹凸棒石棒晶表面的离子发生了交换反应.浸泡90 d后凹凸棒石的表面电荷增加,浸泡180 d后样品旋转黏度从1188 mPa·s提高到2376 mPa·s,胶体稳定性也最好.     

Adhesive properties of water-washed cottonseed meal on four types of wood

The interest in natural product-based wood adhesives has been steadily increasing due to the environmental and sustainable concerns of petroleum-based adhesives. In this work, we reported our research on the utilization of water-washed cottonseed meal (WCM) as wood adhesives. The adhesive strength and water resistance of WCM adhesive preparations on poplar, Douglas fir, walnut, and white oak wood veneers were tested with press temperatures of 80, 100, and 130 °C. Our data indicated that raising the hot press temperature from 80 to 100–130 °C greatly increased the bonding strength and water resistance of the WCM adhesives. The general trend of the adhesive strength of WCM on the four wood species was Douglas fir > poplar ≈ white oak > walnut. The rough surface of Douglas fir with tipping features could enhance the mechanical interlocking between the wood fibers and adhesive slurry, contributing to the high adhesive strength. The dimensional swelling of the bonded wood pairs due to water soaking was in the order: thickness > width (i.e. perpendicular to the wood grain) > length (i.e. parallel to the wood grain). The greatest dimensional changes were observed in Douglas fir specimens. However, the highest decrease in adhesive strength by water soaking was with poplar wood specimens. These observations suggested that the wood dimensional changes were not dominant factors on water weakening the bonding strength of these wood pairs.     

应用VISUAL BASIC开发过程控制型专家系统工具

为适应现代工业生产过程自动化的需要,本文开发了一个结构简单、界面友好、用于过程控制的专家系统工具Visual Basic Expert System Tool(简称：VB-EST)。此工具用Visual Basic语言开发完成,它包括如下三个部分：1．知识库、2．推理机、3．跟踪及帮助。本文已用VB－EST工具成功地开发了均热炉群调度管理专家系统,其速度较高、效果良好。     

基于模糊推理的均热炉温度迭代学习控制研究

根据均热炉装钢的初值条件，基于模糊推理基本理论，获得温度控制的前馈量，构成知识库，利用迭代学习算法，修正前次迭代输入的前馈量。在烧钢加热过程中，采用前馈、反馈与迭代学习算法相结合的控制方案。     

稠油分注选注专家系统

系统通过对储层物性、油井生产动态、测试、油井射孔、固井等相关资料的分析，以数值模拟计算为手段，结合互层状稠油油藏蒸汽吞吐中后期的油藏及流体特征，确定了分注选注措施的实施方案。该系统对稠油分注选注工艺的实施具有很好的指导作用，目前已经应用于现场，并取得了较好的经济效益。     

Stability of a-Si:H solar cells deposited by Ar-treatment or by ECR techniques

Stability against light soaking was studied for amorphous silicon (a-Si:H) solar cells using three different i-layers; (a) device-quality a-Si:H (standard a-Si:H) with bandgap of 1.75 eV, (b) narrow bandgap (1.55 eV) a-Si:H fabricated by Ar* chemical annealing and (c) a-Si:H(Cl) fabricated from SiH₂Cl₂. Both the narrow bandgap a-Si:H and the a-Si:H(Cl) solar cells showed much improved stability than that of the standard a-Si:H solar cells: e.g., fill factor of the narrow bandgap a-Si:H cell only slightly decreased from 56% to 53%, while that of the standard a-Si:H cell degraded from 62% to 51%. In addition, mobility–lifetime products of the a-Si:H(Cl) cell also exhibited improved stability than that of the standard a-Si:H solar cell.     

燃气组成改变对均热炉热效率的影响

运用CFD软件对均热炉的燃烧进行了数值模拟,分析了燃气组成变化对均热炉燃烧温度、烟气辐射强度、炉内流场和炉内温度场均匀性的影响。在理论分析的基础上对均热炉进行了实际测试。不同燃气组成,在热值相近或相差较大的情况下对均热炉的热效率均有很大影响,均热炉仍有节能减排潜力。