Investigation of iodine concentration in salt,water and soil along the coast of Zhejiang,China

Objective: We aim to describe the environment iodine concentration in salt, water and soil along Zhejiang Province coast in the China foreland. It will be helpful for us to judge whether this area is insufficient in iodine and universal iodized salt is necessary or not. Methods: We collected iodized salt samples, drinking water samples (tap water in the towns, and well water or spring water in the villages), water samples from different sources (ditches, lakes, rivers) and soil samples through random sampling in June, 2005. Salt, water and soil iodine was detected by arsenic-cerium redox method. Statistical analysis was expressed as mean±SEMby Windows SPSS 13.0. Results: (1) The iodine concentration in salt was 27.9±4.33 mg/kg (n=108). (2) Seventy-five water samples were collected. The water iodine value was 0.6～84.8 μg/L (mean of 11.66 μg/L). The watershed along the Qiantang River has significantly higher iodine content than the water in Lin'an in mountain area (P＜0.01). The iodine content and mean iodine content of tap water, well or spring water and natural water sources were 4.30±2.43 μg/L (n=34), 23.59±27.74 μg/L (n=19)and 12.72±10.72 μg/L (n=22) respectively. This indicated that among environmental water sources, the ditch iodine content was the highest with river water iodine being the lowest (P＜0.01). (3) Soil iodine value was 0.11～2.93 mg/kg (mean of 1.32 mg/kg).Though there was no statistical difference of soil iodine in different districts (P=0.131), soil iodine content correlated positively with water iodine content. Conclusion: Iodine concentration in salt accords with national policy of adding iodine in salt. Foreland has more iodine in water than mountain area. The data reflected that water and soil iodine in foreland area was not high, which suggests universal iodized salt should be necessary. Environment iodine has relatively close association with pollution.     

尊重学生 理解学生

本文讨论了平等对待学生、理解学生对于教育的重要性。通过对学生人格、独立意识、诚信的尊重以及理解学生等的论述,指出:教师对学生的尊重理解是自身获得尊敬和理解的前提,也是取得教育成功的关键。     

某市热电公司薪酬制度改革案例

引言：某市热电集团公司是一家具有几十年历史的市属国有企业。1993年6月，集团公司以其经营性资产经评估后投入生产性净资产7300万元作为国家股，并定向募集法人股和内部职工股设立热电股份公司，总股本8000万元。股份公司于1996年在上海证券交易所发行新股上市。乃至2000年初，该公司又将本市东山电厂等5个企业通过股权重组纳入集团公司体系，并经董事会议选举秦祥生担任董事长职务。秦总一上任，就遇到一个难题。原来，无论是普通员工还是各级管理人员对于现行的薪酬制度都表现出相当的不满，而科学的薪酬制度对于提升员工工作积极性、迅速打开工作局面又恰恰具有十分重要的意义，因此，必须要进行一场彻底地薪酬制度改革了。然而，受到各种主客观多方面条件的限制，要搞一次成功的薪酬制度改革并不是一件轻而易举的事情。目前，这一问题已成为秦总最为牵肠挂肚的事情。     

民办高等教育研究综述

随着市场经济的发展和我国办学体制改革的深入,我国民办高等教育开始孕育、诞生和茁壮成长.20年来民办高等教育的发展,为社会的稳步发展进步、经济的迅速发展和国民素质的不断提高发挥了不可估量的推动作用.     

Joint rate control and scheduling for wireless uplink video streaming

INTRODUCTION Video streaming is becoming one of the major driving forces of next generation wireless networks. For the currently deployed cellular networks, the practical data rates are not enough to support full rate, high quality video applications. As a result, many research efforts have been devoted to adapting video content to reconcile the conflict between the high demand of video quality and the limited wireless communication resources among users. A large body of literature utiliz…     

基于IPSec与基于MPLS的VPN的比较与分析

介绍目前两种热门的VPN技术：IPSec—VPN和MPLS—VPN,分析和比较了这两种VPN技术在安全性、可扩展性、使用方便性和QoS支持等特点,给出了两种VPN技术各自适合的应用领域。     

佛山市大气环境影响评价研究

从大气污染源、污染气象条件、大气污染现状入手,运用大气扩散模式对佛山市环境质量现状进行了模拟,并结合2000年城市总体发展规划,预测估算了大气环境的质量和容量,为该市大气污染的治理和环境管理提供了科学依据。     

教育过程视角下高校自考助学价值研究

教育过程为研究高校自考助学价值提供了一个新的角度。教育是对教育者进行教育的过程,高校自考助学作为教育的一种方式,注重的是助学教育的过程。高校自考助学具有教育的过程价值,其主要表现为自考助学过程中实现的制度价值、社会价值和教育交往价值。研究和探索自考助学的价值,对于在新形势下建设中国特色自考助学的终身学习体系具有重要的现实意义。     

我国中等职业学校师资培训研究回顾与趋向展望

在这中等职业教育面临前所未有的机遇和挑战的时期,尤其是伴随着中等职业学校国家级、省级骨干教师培训的有序开展,我国学者对中等职业教育师资培训研究投入了更多的关注。目前,职教师资整体水平得到普遍提升;培训机制、培训模式亦作为可行的操控切入点,着力创建全方位的师资培训模式,并在此基础上阐明了未来我国中等职业教育师资培训的趋向。     

Success in Geology --Give My Respects to Dad

朱筱敏——中国石油大学教授,荣获第十一次李四光地质科学奖。除去种种光环,朱教授在生活中也扮演着一个普通父亲的角色,来看看女儿眼中的朱教授是什么样子的。