80%莠灭净水分散粒剂的配方

采用了挤压造粒的加工工艺对高含量莠灭净固化新剂型WG(水分散粒剂)进行了研制,尤其对该制剂中的润湿剂、悬浮分散剂、粘结剂和崩解剂的种类及用量进行了筛选,并对该制剂的润湿、崩解、悬浮等性能进行了检测,根据试验结果得到了由2%的烷基萘磺酸钠、4%的马来酸-丙烯酸共聚物钠盐、3%的聚乙烯吡咯烷酮、2.5%的可溶淀粉、83.3%的莠灭净原药(含量为96%)和适量膨润土等组成的较佳配方,该产品的悬浮率在90%以上,崩解时间在1min以内,在(54±2)℃下贮存4周后的分解率小于5%,各项性能指标均符合水分散粒剂的要求。     

Dynamics of fluid circulation in coupled free and heterogeneous porous domains

Fluid flow in coupled free and porous domain, particularly when the porous medium is heterogeneous, is encountered in many hydro-environmental conditions, e.g., leakage from underground pipe, combined groundwater lake-subsurface interactions. One of the most difficult problems in the study of coupled flow behaviour has been the development of a universally applicable modelling scheme for combining the flow regimes. This is because the free/porous interfacial properties (e.g., shear-stress; velocity slip) that govern the coupled flow behaviour are difficult to determine experimentally under hydro-environmental conditions. On the other hand, the implications of various forms of heterogeneity in the porous media properties can be very different on the fluid-flow behaviour. Difficulties may also arise in direct coupling of the model equations that govern the fluid flow in the individual regions (e.g., Navier-Stokes for free-flow region and the Darcy's equation for the porous flow region). Consequently, models of coupled free and porous flow for hydro-environmental conditions are not very well developed at the moment. While there are some indications that fluids in coupled free and porous domains may circulate (i.e., development of flow cells), there is a lack of appropriate 3D analysis on how heterogeneities in porous media may affect such flow patterns. In this paper, we aim to analyse how porous media heterogeneity affects the dynamics of flow circulation in the porous side of a coupled free and porous domain. For this purpose, we analyse flow patterns in several model domains made up of two porous layers with differing permeabilities. The governing model equations are discretised and solved using the standard finite volume method on a staggered cell-centred mesh. The temporal discretisation is done using the explicit method. An in-house graphical user interface (GUI) has been created specifically to aid in the visualisation of otherwise complex flow patterns. The GUI contains many post-processing options and provides a comprehensive tool for the analysis of hydrodynamics and contaminant motion (not discussed in this paper) in coupled free and porous flow domains. This GUI is described in this paper briefly. The effects of altering the aspect ratio (i.e., multi-scale) of the domain on the coupled flow pattern have also been discussed.     

天然中草药美白祛斑化妆品

根据色斑的形成机理，采用相应的天然草本植物提取物淡化色斑。根据细胞内黑色素形成机理，选用适当抑制剂。减少黑色素的过量生成，防止皮肤表皮的继续黑化，提出美白与祛斑化妆品的合理配制方法。     

Insect sex pheromones

The half-lives (t _1/2) for evaporative loss ofn-alkyl andn-alkenyl acetates from rubber septa were determined at temperatures varying from 15 to 35 °C. The changes int _1/2 with temperature gave high correlations with the equation, Int _1/2 = H/RT+y _o where H is the heat of vaporization,R is the gas constant,T is the absolute temperature, andy _o is a constant. Half-lives changed dramatically with temperature and the degree of change with temperature increased with increasing molecular weight. For mixtures, component ratios changed with temperature, but the degree was modest. At 20 °C there was a 7.5-fold ratio oft _1/2 between members of the homologousn-alkyl orn-alkenyl acetates differing by two carbon atoms. The large change int _1/2 with temperature and with number of carbon atoms is a consequence of the thermodynamic relationships and the temperature range of pheromone usage. Therefore, a similar degree of change inf _1/2 with temperature and number of carbon atoms will apply to other formulations of the same type (those in which the rate of evaporation is first order). The values oft _1/2 at 20 °C mainly agreed very well with those reported previously at room temperature. However, our previously reported values for pentadecyl and hexadecyl acetate were revised. Half-lives were shown to depend on the vapor pressure of a compound in the formulation substrate, but not on the vapor pressure of the pure compound.Mention of a commercial or proprietary product does not constitute an endorsement by the USDA.     

黄河水水质配方实验及其应用

该文通过水质调查和大量实验数据，对循环水改为黄河水质运行的配方进行了筛选，并提出了自然ｐＨ全有机配方的概念，通过监测数据，对黄河水配方运行情况进行了总结，该配方投用后，不但能节约地下水资源，而且经济效益显著。     

豆油脚脂肪酸制备松香改性醇酸树脂的配方研究

利用豆油脚脂肪酸-松香-甘油-苯酐，采用脂肪酸法制备松香改性醇酸树脂。通过实验得到较佳工艺条件，确定经济合理的配方和各种原料用量，制备出符合标准的醇酸树脂产品，为加工成各色醇酸调合磁漆和脂肪酸调合磁漆奠定基础。此方法有效利用了废弃的大豆下脚料以代替市场紧缺的天然桐油和亚麻油，为豆油脚在涂料工业上的开发和利用开辟了新途径。     

Numerical solution of viscous flow past a solid sphere with the control volume formulation

The control volume formulation with the QUICK finite difference scheme is used to solveincompressible liquid flow past a solid sphere in terms of stream function and vorticity.Several tech-nical points are addressed on improving the accuracy and efficiency of numerical simulation of similarproblems of fluid flow.In particular,the importance of suitable specification of the distortion func-tion to enforcing the far field boundarv conditions is emphasized.     

蔬果磷稳定性研究

用非离子型表面活性剂和吡咯类化合物作稳定剂，加入由约含８０％蔬果磷原药配制的２５％乳油中，制剂被装入安瓿瓶内，在５４℃条件下，储存１４天。分析蔬果磷的含量，没有加稳定剂的，蔬果磷仅残留约５３．４４％，加入稳定剂的，蔬果磷含量至少存在９６．２９％。然而当蔬果磷２５％乳油用３５％左右的原药和稳定剂配制时，在上述储存条件下蔬果磷的分解率为４５％－７０％。     

微型橡胶同步带的研制

研制了一种微型橡胶同步带。强力层材料选用进口玻璃纤维线绳；包布层材料选用无锡产尼龙变形纱织物。带背和带齿胶料配合为：ＣＲ１００；氧化锌４；硬脂酸１；软化剂５；氧化镁５；防老剂３．５；炭黑５０；促进剂ＮＡ－２２，ＴＴ，ＤＭ适量。经检测和实际应用证明，成品带各项性能指标均超过本所企业标准和日本ＪＩＳＫ６３７９—８９标准，并达到国内同类产品的先进水平．