优化SMC模压工艺控制制品收缩率和表面粗糙度

优化SMC模压工艺参数：模压压力分为二阶段，选定最佳压力释放时机和压力；适宜降低模压温度。可显著降低SMC制品的固化收缩率，提高其表观质量、试验表明，同时采用的线收缩率和表面粗糙度两种检测和村定方法具有很好的同一性。     

Do changes in cognitive factors influence outcome following multidisciplinary treatment for chronic pain? A cross-lagged panel analysis.

Changes in maladaptive cognitions may constitute therapeutic processes of multidisciplinary pain programs. A cross-lagged panel design was used to determine whether (a) early-treatment cognitive change predicted late-treatment outcome index change, but not vice versa; and (b) these effects remained significant with depression change controlled. Ninety chronic pain patients, in a 4-week multidisciplinary program, completed measures of catastrophizing, pain helplessness, depression, pain, interference, and activity level at pre-, mid-, and posttreatment. With depression changes controlled, early-treatment catastrophizing and pain helplessness changes predicted late-treatment outcome index changes, but not vice versa; early-treatment depression changes predicted late-treatment activity changes, but not vice versa. Findings advance understanding of pain treatment process and suggest that negative cognition changes may indeed affect improvements in treatment outcome. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Trajectories leading to school-age conduct problems.

The present study applied a semiparametric mixture model to a sample of 284 low-income boys to model developmental trajectories of overt conduct problems from ages 2 to 8. As in research on older children, 4 developmental trajectories were identified: a persistent problem trajectory, a high-level desister trajectory, a moderate-level desister trajectory, and a persistent low trajectory. Follow-up analyses indicated that initially high and low groups were differentiated in early childhood by high child fearlessness and elevated maternal depressive symptomatology. Persistent problem and high desister trajectories were differentiated by high child fearlessness and maternal rejecting parenting. The implications of the results for early intervention research are discussed, with an emphasis on the identification of at-risk parent-child dyads. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

基于注塑件收缩率预测的模具型腔尺寸生成方法研究

针对注射模具CAD/CAM系统普遍采用平均收缩率来计算模具型腔尺寸所存在的不足，提出基于注塑件的收缩率预测结果生成模具成型尺寸的方法，并给出注塑件尺寸与模具成型尺寸之间的换算方法。最后通过反求工程中的曲面重构技术完成模具型腔表面的造型。     

大型深水湖泊可持续发展制约因子识别与发展对策研究——以千岛湖流域为例

千岛湖是较为典型的大型深水湖泊，近年来其发展受到自然和人为等因素的影响。通过研究千岛湖可持续发展的制约因子，提出适合千岛湖水域环境保护的思路，并制定湖泊水环境保护的方向性和战略性目标。结果表明，千岛湖作为集多种功能于一体的较深大型淡水湖泊，探索出的一条环境保护与经济发展的行之有效的途径，可为国内其它湖泊提供发展的借鉴。     

建筑师难以出精品之原因分析

指出当今建筑业良好的市场给建筑师们提供了展示自己作品的广大空间 ,但其精品却为之甚少。为此 ,对建筑业存在的一些问题及制约建筑师出精品的主、客观因素进行了分析 ,指出建筑师应提高自身素质 ,树立精品意识 ,增强市场竞争能力     

Thermally stimulated shrinkage forces in oriented polymers: 1. Temperature dependence

Temperature dependences of shrinkage forces appearing in oriented polymer samples when heated at constant length were recorded for polycarbonate, polyethylene terephthalate, polyethylene and polypropylene. The influence of various processing conditions on thermally stimulated shrinkage forces is demonstrated. A four-state model is proposed which qualitatively describes the temperature dependences of shrinkage forces in amorphous polymers.     

已二醇二丙烯酸酯对真丝的接枝改性研究

研究了用二醇二丙烯酸酯为接枝单体、过硫酸铵（APS）为引发剂对真丝的接枝共聚反应，分析了接枝率的影响素，并测试了改性真丝的主要应用性能。结果表明：乳液和乙醇/水为溶剂的2种体系都能在真丝上获得较高接枝率。对于乙醇/水体系v(乙醇）：v(H2O）=1:1，接枝单体20～30g/L,2%甲酸4ml，引发剂APS 0.5g/L,65～70℃接枝60min的接枝率高。改性后真丝的断裂强度、延伸度、吸湿性能都可获得改善，对酸、碱的溶解性提高，但染色性能提高不明显，对泛黄性改善一般。     

絮凝法处理油田作业废液技术研究(1)——悬浮物处理

利用絮凝法对胜利油田作业过程中产生的废液进行处理,考察了两种絮凝剂A、B的使用浓度对悬浮物处理效果的影响。正交实验的结果表明:复配絮凝剂A+B能有效脱除作业废液中的悬浮物,絮凝剂A的浓度与污水体系的pH值是影响处理效果的主要因素,通过正交实验筛选出复合絮凝剂对悬浮物处理的最佳实验条件。