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)     

HDPE/CB-GP复合材料体系电性质的研究

当HDPE含量46％（质量分数，以下同）、其它添加剂（如抗氧剂、阻燃剂、交联剂和润滑剂等辅助填料）的含量11％，两种导电填料石墨（GP）和碳黑（CB）的总含量为43％时，研究结果表明石墨含量的变化对HDPE/CB-GP复合材料室温电阻率、阴C强度和后NTC强度有显著的影响．HDPE/CB-GP复合材料中GP的含量〈8．6％时，样品的室温电阻率〈30Ω·m，PTC强度〉7、后NTC强度〈1．3；电阻率．温度曲线经过17次冷热循环后重现性好，复合材料具有实际应用价值；GP在复合材料中为层片状结构。     

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     

土壤固化剂无侧限抗压强度试验研究

针对山西省长治市石子河河道处理问题 ,采用固化剂粘土进行了无侧限抗压强度试验 ,并与水泥土进行了比较。发现固化剂 2的无侧限抗压试验强度最佳 ,为工地现场试验及河道综合治理提供了更为有力的理论依据     

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。     

柱塞泵弹簧座失效原因及解决办法

对某工厂废水处理用液压柱塞泵的弹簧座进行了受力分析、强度计算和金相检验,找出了弹簧座内表面产生晶间腐蚀的原因和解决的方法.     

催化裂化再生系统设备应力腐蚀开裂成因分析及解决对策

通过对催化裂化装置再生系统设备裂纹断口分析 ,以及对再生烟气的组分、冷凝水酸度及露点等的分析及对设备焊接残余应力测试 ,阐明了设备应力腐蚀开裂发生的原因 ,指出了富氧操作、高露点温度和高应力水平对再生系统设备应力腐蚀的影响作用 ,并重点提出了解决和防止应力腐蚀开裂的一系列有效措施和部分应用情况