New strategies for separations through reactions

Separations through reactions can provide reliable and economically viable alternatives to established methods of separation, particularly for close boiling substances. New strategies in ‘Dissociation Extraction’ and ‘Dissociation Extractive Crystallization’ for separation of close boiling acidic/basic mixtures have been highlighted. Separations with aqueous solutions of hydrotrope and aqueous micellar solutions have been brought out. Separations by membranes with facilitated transport is potentially attractive. This paper is dedicated to Dr L K Doraiswamy on his sixtieth birthday.     

卡伦水库洪水风险调度效益浅析

本文主要从选择卡伦水库实行洪水风险调度的依据、水库洪水控制标准、调度原则及效益等方面论述卡伦水库实行洪水风险调度的重大意义。特别强调在水库洪水调度过程中适度承担风险,必须确保工程安全运行、科学调度,加强管理,依法防洪,合理蓄水,要正确把握水库安全度汛与水资源合理利用的关系,正确处理防洪与兴利的关系,正确处理风险与效益的关系,充分发挥水库的综合效益。适度承担风险进行水库洪水调度,既充分利用雨洪资源,又尽最大可能变水害为水利,实现雨洪资源化,达到人、水与自然和谐共处,促进经济社会协调发展。     

全国农田水利建设先进县的经验与启示

针对农田水利建设下滑的被动局面，各地积极探索，从加强领导、拓宽投入渠道、创新体制和机制等方面积极采取措施，取得了很大成效。对国务院2006年表彰的100个全国农田水利建设先进县（市、区）中的35个县（市、区）进行了调研，总结了它们的主要做法、经验，提出农田水利建设先进县的三点启示。     

用环境水利理念和方法建设富锦市城市防洪工程

本文结合富锦市城区堤防建设论述了城市防洪建设应从单一防洪目标逐步过渡到区域性多目标治理。以水利工 程为载体,推动促进环境的改善,实现防洪、水资源、生态环境以及城市景观建设的协调统一。     

混凝土面板堆石坝坝料开采爆破试验

介绍在某水电站进行的混凝土面板堆石坝坝料开采爆破试验的情况。试验突破了仅根据岩石坚固性系数选取单位炸药消耗量的传统习惯，结合岩体裂隙与风化程度确定单位炸药消耗量，并采取分段装药，严格控制各段装药量和炮孔堵塞长度等措施，取得了良好的爆破效果。     

一种8毫米波变张角,半径突变多模圆锥馈源

我们研制了一种8毫米波变张角、半径突变的多模圆锥馈源。计算出其模比并推导出其辐射方向图公式;给出其在两个主平面——E平面与H平面上的辐射方向图和波束场分布特性的测试结果以及电压驻波比VSWR的测量结果;同时给出频带和旁瓣特性。分析与测试共同表明,在34.5GHz～37GHz频带里,该多模馈源的辐射图在大于24dB范围内获得幅度等化且不出现旁瓣,因此具有一定的应用价值。     

型钢矫直中产生缺陷的原因及改进

结合邯郸钢铁集团公司型棒材厂型材矫直后头、尾部普遍存在的问题,分析了产生问题的原因,通过采取一些技术措施产生了一定的效果,进一步提出了对矫直机结构的改进方案。     

垃圾焚烧发电厂烟气处理系统设计研究

文中结合垃圾焚烧发电厂烟气处理设计,介绍了干法烟气净化系统设计的主要技术要点及其效果,为垃圾焚烧发电厂烟气净化处理提供了设计的方向.     

Increasing the number of psychologists of color: Public policy issues for affirmative diversity.

This article identifies the key issues involved in the debate about affirmative action. The June 2003 Supreme Court decisions allowing consideration of race to ensure that there is a "critical mass" of African American, Latino/Latina, and Native American applicants to higher education are addressed. Social psychologists have identified key myths and provided clarifications about the need for and consequences of strategies used to promote equal opportunity for persons of color and women. A brief history of affirmative action and of the problems it was designed to solve is provided. The accomplishments, benefits, and compelling interest of diversity and affirmative action are described, as well as the concerns and counterpoints. The lack of a substantial applicant pool in psychology hinders progress toward diversity. Alternative strategies for remedying this lack beyond affirmative admissions policies in psychology are briefly discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

悬浮型速溶PHPAM堵水剂及其堵水技术

本文介绍了以悬浮型速溶PHPAM为基础研制的低温油井堵水剂,讨论了影响堵水剂交联时间和成胶粘度的因素,制定了移动式弹性隔板堵水工艺并成功地应用于二连油田蒙古林砾岩油藏的油井堵水。该堵剂适用于30—60℃油井,交联时间可控、配制简便、快速、施工周期短。