飞机实验室气候试验风险识别及分析

目的 研究飞机实验室气候试验过程中风险的识别及分析问题.方法 根据飞机实验室气候试验流程,针对试验设计、试验准备、试验实施和试验确认等阶段进行风险识别和分析.结果 及结论识别并分析出实验室气候试验各阶段的风险,并在国内首次某民机实验室气候试验中得到应用.     

锦纶生产废水的深度处理研究

采用曝气生物滤池对锦纶生产废水进行深度处理,试验结果表明,该工艺可有效去除CODCr和NH3-N,并在不同运行条件下的运行特性进行了考察,确定试验的最佳气水比。     

神府东胜矿区生态环境问题及对策

在调查研究分析的基础上，从分析矿区生态环境影响的特点入手，针对矿区开发建设中存在的主要生态问题，提出了保护生态环境的对策和措施，对于矿区的生态环境保护和可持续发展具有一定的参考价值。     

水环境化学作用CAI课件的制作

计算机辅助教学CAI（Computer-Assisted Instruction)是现代计算机技术发展与教学内容相结合的产物。本文主要介绍了计算机辅助教学CAI课件的优点和特点。详细说明了水环境化学作用CAI课件的制作过程，探讨了具体制作一个CAI课件的流程。     

The effects of land use and its patterns on soil properties in a small catchment of the Loess Plateau

Due to relatively strong human activities in the hilly area of Loess Plateau,the natural vegetation has been destroyed,and landscape pattern based on agricultural land matrix was land use mosaic composing of shrub land,grassland,woolland and orchard.This pattern has an important effect on soil moisture and soil nutrients.The Danangou catchment,a typical small catchment,was selected to study the effects of land use and its patterns on soil moisture and nutrients in this paper.The results are as follows:The comparisons of soil moisture among seven land uses for wet year and dry year were performed:(1)the average of soil moisture content for whole catchment was 12.11% in wet year,while it was 9.37% in dry year;(2)soil moisture among seven land uses was significantly different in dry year,but not in wet year;(3) form wet year to dry year,the profile type of soil moisture changed from decreasing type to fluctuation-type and from fluctuant type to increasing type;(4)the increasing trend in soil moisture from the top to foot of hillslope occurred in simple land use along slope,while complicated distribution of soil moisture was observed in multiple land uses along slope.The relationships between soil nutrients and land uses and landscape positions were analysed:(1)five nutrient contents of soil organic matter(SOM),total N(TN),available N(AN),total P(TP) and available P(AP) in hilly area were lower than that in other areas.SOM content was less than 1%,TN content less than 0.07%,and TP fallow land and cropland,and higher level in soil fertility was found in crop-fruit intercropping land among croplands;(3)soil nutrient distribution and responses to landscape positions were variable depending on slope and the location of land use types.     

海域岩土工程勘察施工工艺

海域岩土工程勘察因受风浪、潮汐、定位等因素影响,与陆地勘察相比,施工工艺差异较大。本文以深圳西港区(位于珠江口)某航道工程为例,详细介绍其施工工艺,以期对海域勘察工程实施有一定的参考意义。     

川中丘陵区典型土地利用方式下磷素迁移的初步研究

通过野外定位观测,对川中丘陵区坡耕地、水田与林地地表径流水中磷素迁移形态、迁移通量进行了初步研究。结果表明,坡耕地、林地磷素迁移以颗粒吸附态为主,水田磷素迁移以水溶性磷为主,所有土地利用类型径流中总磷含量已超过水体富营养化的标准。坡耕地、水田和林地地表径流水中磷迁移的通量分别为0.88 kg/(hm2.a),0.15 kg/(hm2.a)与0.33 kg/(hm2.a)。     

西宁盐碱地区高速公路植被恢复技术探讨

西宁至马场垣高速公路穿越的地区属于生态脆弱带。与其他生态脆弱区不同的是，其土壤中盐分的含量非常高，土壤碱性强，它不仅导致植物的生理干旱，还对植物细胞产生毒害作用，不良的植被恢复措施也加重其危害程度。为减轻盐碱的危害需要采取相应的措施如筛选适宜植物、农业灌溉、化学及其它措施，可以减轻危害恢复植被。     

织物干洗的工业生态研究

正确评价干洗剂对人体的毒副作用，合理地设定干洗过程挥发性有害物质的残留限量，是开发干洗业环境无害技术和绿色服务的先决条件。只有在充分保证环境安全的前提下，通过逐步推行化学清洁产品的总体选择战略，从环境管理和经济发展的结合上来规范企业的环境行为，才能最终实现干洗业的可持续发展。     

皂素清洁生产工艺的研究(Ⅰ)

黄姜淀粉经过!-淀粉酶液化,加糖化酶和酵母进行边糖化边发酵生产酒精。发酵后黄姜渣用酸水解法提取薯蓣皂素。黄姜淀粉利用率为86.30%,耗酸量为传统工艺的55%,废水的总COD比传统工艺减少了60.25%,皂素收率比传统工艺提高20.37%。