关于新农村经济建设中湿地保护的若干思考

我国的城市化、工业化正以前所未有的速度和规模突飞猛进,耕地、林地、草地资源的保护力度也得到前所未有的强化,但在新农村建设中,湿地治理和保护仍存在一系列问题。要把湿地治理好、保护好,还需要全社会共同努力,需要采取一系列的湿地保护措施,以达到更好地保护湿地的目的。     

浅析购置与安装磁共振设备的前期准备

目的:充分了解各品牌仪器性能,为医院购置磁共振提供可靠依据。方法:通过对几大品牌实际用户的实地调研与各品牌销售代表的谈判。结果:为医院提供确实有效的,与事实相结合的调研结论,为采购提供有效依据。     

一种新的湿式烟气脱硫系统烟囱防腐措施探讨

湿式烟气脱硫系统中,由于烟气脱硫后含湿量增加,露点温度升高,大量水蒸汽凝结为小水滴吸收烟气中的二氧化硫,产生大量白雾排放到大气中,对烟囱及周围建筑中的钢结构造成腐蚀。可以通过降低吸收塔入口处吸收液的温度,使其脱硫效率增加,同时使含湿量和露点温度降低,从而有效地防治白雾生成和烟囱腐蚀。     

冲刺阶段的高考化学备考策略

在高考最后几个月冲刺阶段,要提高备考效率,必须掌握新课标高考化学备考的基本策略。本文阐述了具体的化学备考策略。     

关于1-溴丁烷制备实验的一些探讨

1-溴丁烷的制备是基础有机化学实验的重要内容.本文对学生在该实验中常出现的问题进行系统的分析,并提出了相应的改进方法,即利用乙醚萃取的方法替代蒸馏方法提取1-溴丁烷粗产品.本方法克服了蒸馏末期产品容易碳化的弊端,简化了实验过程,提高了收率,具有明显的优越性.     

Healthy Birth Practice #1: Let Labor Begin on Its Own

As cesarean rates have climbed to almost one-third of all births in the United States, current research and professional organizations have identified letting labor begin on its own as one of the most important strategies for reducing the primary cesarean rate. At least equally important, letting labor begin on its own supports normal physiology, prevents iatrogenic prematurity, and prevents the cascade of interventions caused by labor induction. This article is an updated evidence-based review of the “Lamaze International Care Practices That Promote Normal Birth, Care Practice #1: Let Labor Begin on Its Own,” published in The Journal of Perinatal Education, 16(3), 2007.     

The Preparation of Master's‐Level Professional Counselors for Positions in College and University Counseling Centers

This study investigated college and university counseling center directors’ perceptions of the adequacy of the preparation of master's‐level counselors for work in college and university counseling centers. Results indicated that counselors were rated on average as prepared; however, many directors had concerns about counselors’ ability to work with students presenting more severe mental health issues. Findings are discussed, and implications for the training and preparation of college counseling practitioners are presented.     

Preparing students for college admissions tests

Attaining successful outcomes on the SAT can have profound educational and financial consequences for college-bound students. Using archival data from a private tutoring centre, we investigated variables we hypothesised to contribute to SAT score increases. Our analyses revealed significant effects of time on task and rate of SAT homework completion. Starting preparation earlier in the junior year and distributing tutoring sessions over larger intervals contributed to higher SAT score improvements. Testing effects were significant: more frequent practice tests significantly increased SAT scores. Official SAT administrations contributed more to score increases than did unofficial practice tests. Individual tutoring hours yielded greater increases than did group tutoring hours. Student characteristics such as gender, SES, or private or public school attendance were not significant. Implications for improving test preparation for students as well as directions for future research are discussed.     

活性白土的性质及应用

活性白土具有优异的性能,广泛用于油脂脱色、化工产品精制、工业催化、环境保护等领域,文章概述了活性白土的制备方法、结构及性质。     

海洋环境自动监测站试剂调配系统设计

以配制一种R3SAA溶液为参考对象,借助蠕动泵、PLC等重要的电控器件,结合设计的一个机械摇匀机构,通过PLC编写程序控制,完成一个机电一体化的海洋环境自动监测站试剂调配系统,实现对海洋环境自动监测站中的试剂自动化配置,缩短了监测周期。