积极顺应时代需要 加快培养创新人才     

李飞 《江苏广播电视大学学报》2001,12(1):76-78

要培养和造就适应时代发展需要的创新人才，就必须更新教育观念，确立以创新为核心的教育思想，突破旧的教学模式，构建以培养人的创新精神和创新能力为基本价值取向的新的教育体系。本文结合《地基有基础》课程教学实践，探讨顺应时代发展需要、树立创新教育思想、实施创新教学、培养创新人才的做法。  相似文献   

高职《土力学与地基基础》教学改革与实践     

张书俭 《长江工程职业技术学院学报》2008,25(2):65-67

针对高职教育特点及教学现状,就《土力学与地基基础》课程,在教学内容、教学方法、实践环节及考核方式等方面进行了一系列的改革探索,谈了一些具体做法和设想,具有一定的实用性和可操作性。  相似文献   

湘中紫色土丘岗区农业生态工程优化模式的效益分析--以衡南县谭子山镇工联村为例     

田亚平  张慧颖 《衡阳师范学院学报》2004,25(6):84-88

湘中衡阳盆地紫色土丘陵岗地分布广泛，这里普遍植被稀疏，水土流失严重，部分地区甚至基岩裸露，土地荒芜，呈现红色荒漠化现象。本文以衡南县工联村为例，针对湘中紫色土丘岗区综合开发项目示范区的农业生态工程优化模式，采用层次分析法和对比分析法，分别从生态效益、经济效益、社会效益和综合效益等方面进行1990年与2001年的对比分析。结果显示，工联村农业生态经济系统的生态效益、经济效益和社会效益指数均有显著提高，并已由非生态农业阶段发展进入到良性生态农业阶段，为湘中紫色土丘陵综合治理、农业生态工程建设和农业结构调整提供了一个良好的示范。  相似文献   

竞争吸附剂对负载型常温精脱硫剂上活性组分的分散作用与表征     

方林霞  井强山 《许昌学院学报》2003,22(2):31-34

用浸渍沉淀法制备复合金属氧化物脱硫剂，添加竞争吸附剂可以使金属氧化物在载体γ—A12O3上高度分散，有利于其与硫化物反应．常温、缺氧条件下精脱H2S穿透硫容可达16．8％．分析了竞争吸附剂的分散作用机理，采用EP、TEM技术分析了金属氧化物活性组分的均匀分布及脱硫前后的脱硫剂微表面的变化．  相似文献   

基于IEET工程教育认证背景下的土力学实验教学方法探索     

程马遥  饶德军  曾卫 《教育教学论坛》2019,(24):275-276

工程教育认证制度是国际通行的质量保证办法,是工程师制度改革的基础,是未来工程师能力水平的保证。IEET推动的工程教育认证是一项非政府的审查机制,主旨为“以学生学习成果为导向(outcome-based),确保专业的教育品质”。那么结合现代信息化教学技术——微课的理念,本文主要探索土力学实验教学新模式,设计出符合创新人才培养目标要求的土力学实验课程教学内容,期待能为高等学校相关专业土力学实验课程任课教师准备实验教学内容提供参考,同时也为同行开展相关实验及学生设计创新实验提供借鉴。  相似文献   

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

陆颖理  王宁荐  朱岚  王国兴  吴晖  匡琳  朱文明 《Journal of Zhejiang University. Science. B》2005,6(12):1200-1205

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.  相似文献   

Land degradation,government subsidy,and smallholders’ conservation decision: the case of the loess plateau in China     

石敏俊 《浙江大学学报(A卷英文版)》2004,5(12):1533-1542

Land degradation is one of the severe environmental problems in China. In order to combat land degradation, a soil conservation program was introduced since 2000 to reduce soil erosion by converting slope-cultivated land into forestry and pasture. This paper represents the first systematic attempt to investigate the impact of the soil conservation program on land degradation in the loess plateau. The results indicate that the soil conservation program to convert slope fields into forest or pasture is an effective way to combat soil erosion. However, a subsidy that is higher than profit of land use activity of slope fields before their conversion into forest and pasture is needed to encourage farmers to join the conservation program. A policy measure to encourage and assist farmers to develop sedentary livestock by using crops produced from fields as well as fodder and forage grass from the converted slope fields might contribute to combat soil erosion. Increase in off-farm job opportunities may encourage households to reduce cultivation in slope fields. That implies a policy measure to encourage rural urbanization might contribute to combat soil erosion.  相似文献   

天然甘蓝食用色素化学稳定性研究   总被引：3，自引：0，他引：3  

白慧云  宋建荣 《长治学院学报》2006,23(5):51-52

蔬菜花色素是天然食用色素中的一个主要类别,属水溶性色素.甘蓝色素是蔬菜花色素中新近开发的一种.本文测定了甘蓝色素吸收光谱和其在溶液中呈现红紫色的适宜酸度条件,观察了不同pH对该色素的影响和这些添加剂存在下它的光照稳定性.为甘蓝色素的开发应用提供了依据.  相似文献   

折线型坡面时土压力的近似计算     

李和平  黄强 《洛阳工业高等专科学校学报》2003,13(1):16-17

针对折线形坡面，通过经典库仑土压力理论，对挡土墙的土压力作出近似的计算。  相似文献   

黄河三角洲及渤海莱州湾滨海区土壤资源及其合理开发利用   总被引：6，自引：0，他引：6  

郭洪海赵树慧史立本林守宗刘兆辉 《资源科学》1994,16(3):12-19

黄河三角洲及渤海莱州湾滨海区土壤含盐量高和肥力低为其突出特点。干旱的气候、黄河尾闾河道的摆动、咸水的侵染、风暴潮的侵袭等自然条件和人类活动决定着土壤发生与发展的总趋势。生物与工种措施相结合综合治理旱、涝、盐、咸、瘦、农、林、牧、渔、盐综合发展，是合理开发4黄河三角洲、土壤资源、土壤盐  相似文献