高压注浆加固中、低压缩性土层实例浅析

以高压注浆加固中、低压压缩性土层,提高地基承载力特征值的工程为实例,通过对复合地基承栽力特征值的检测,说明用高压注浆的地基处理方法加固中、低压缩性土层是切实可行的。     

Medical nonadherence in pediatric HIV: Psychosocial risks and intersection with the child protection system for medical neglect

Nonadherence to antiretroviral treatment has serious health implications for HIV-infected children, at times warranting referral to child protective services (CPS). The current study of 134 children with perinatally acquired HIV infection aimed to investigate rates of treatment adherence and CPS involvement, multilevel variables associated with nonadherence, and the manner in which these risks operated together in the prediction of adherence outcomes. Risk factors for nonadherence were grouped on the basis of confirmatory factor models, and factor score regression was carried out to determine which factors were uniquely predictive of adherence. A series of indirect effects models were then tested in order to examine how these factors operated together in the prediction of adherence. Results showed that almost half of the sample demonstrated suboptimal adherence to treatment, and in one-fifth, CPS was involved for medical neglect. Caregiver Health, Caregiver Involvement, Caregiver Acceptance, and Child Adaptation were predictive of nonadherence, and together explained 54% of the variance in treatment adherence. There were significant indirect effects of Caregiver Health on adherence that operated through Caregiver Involvement and Child Adaptation and an indirect effect of Caregiver Involvement on adherence through Child Adaptation. Findings extend current literature that has independently linked various factors predictive of medical adherence in pediatric HIV by showing separate but simultaneous associations with nonadherence and unique pathways to adherence involving multilevel risks. Healthcare and child welfare implications are discussed.     

TiO_2光催化氧化法处理偶氮染料废水的研究方法

偶氮染料废水是一种有机物含量高、成分复杂、色度高、可生化性差的难降解废水,其处理方法已引起广泛关注。TiO2具有较高的光稳定性和反应活性,是一个能高效光催化降解有机污染物的催化剂。概述了近几年来TiO2光催化降解偶氮染料废水的研究方法。     

The Implications of Teacher Selection and the Teacher Effect in Individually Randomized Group Treatment Trials

Abstract

In some experimental evaluations of classroom-level interventions it is not practically feasible to randomly assign teachers to experimental conditions. Given such restrictions, researchers may randomly assign students to experimental conditions and consider the teacher to be a part of the intervention. However, in an individually randomized evaluation of a classroom-level intervention, unless teachers are randomized to experimental conditions, it will not be clear whether differences in outcomes between program and control group students are a result of the core components of the intervention or the teachers (i.e., teacher effects). This article clarifies the correct interpretation of “program impacts” when this study design is used. In addition, using the magnitude of estimated teacher effects from past research, this article demonstrates that, if teachers are not randomly assigned to experimental conditions, it is difficult to establish whether the program works or whether the types of teachers selected to teach in program classrooms are simply more or less effective than their control group counterparts. The significant implications of the correct causal interpretation are discussed, and the limitations of this research design are explored.     

一种计算多个独立基础相互影响下的地基沉降量新方法

针对目前《建筑物地基基础设计规范》中介绍的“规范法”在手动计算多个独立基础相互影响下的地基沉降量时,“规范法”查表工作量大且效率低．文章在对地基沉降计算公式进行分析和进一步推导后,提出一种修正后的应力面积法,即利用求解多个基础荷栽在地基中产生的叠加后总附加应力面积与地基土压缩模量的比值来计算地基沉降量．结果表明：这种方法可以省掉大量的附加应力系数查表工作,提高计算效率,可以在计算地基沉降量问题中得到应用,但精度略低．     

化学实验室中常见废液的初步处理

对化学实验室中含酸、碱的废液,含重金属废液以及含氰离子废液处理提出了简捷有效的方法,为化学实验废液的处理提供了有效的参考。     

Changing research trends in the field of archaeological wood at the Conservation Department,Faculty of Archaeology,Cairo University

Abstract

Since 1980, much research in the field of treatment and conservation of archaeological wood has been carried out at the Conservation Department, Faculty of Archaeology, Cairo University. Materials and methods used in conservation have been changing gradually over the years worldwide. It was necessary to study critically previous masters and doctoral dissertations on Egyptian archaeological and historic wood, all written in Arabic. This review of them includes a brief history of the Conservation Department at Cairo University and five main focal points of past research: types of wood used throughout Egyptian history, assessment of wood decay, wood properties and composition, treatment and conservation of decorated wood, and the evaluation of chemicals and polymers used in the treatment of archaeological wood and composite objects containing wood.     

论《三国演义》中诸葛亮形象的智者之愚

诸葛亮这一人物形象所展示出的人格魅力和演绎出的超凡入神的智慧故事,无疑是《三国演义》的最大看点之一。然而＂智者千虑、终有一失＂,本文从诸葛亮日常生活的失调、用人方面的失误、军事方面的失策等角度分析诸葛亮＂出师未捷身先死＂及蜀国迅速衰亡的原因。     

体操运动中踝关节损伤的机理与防治

在体操教学和训练中,踝关节软组织损伤非常多,伤病虽小,但恢复时间较长,直接影响到教学和训练的系统性,文中就体操运动中造成踝关节损伤的致损因素及其防治措施进行了分析和探讨。     

济宁市地面沉降的趋势面分析

本文利用统计分析软件SPSS对济宁市地面沉降及其有关因素进行分析,结果表明,利用趋势面分析对地面沉降进行研究是可行的,可为进一步的分析研究提供基础数据.