有机废水有效微生物处理实验研究

应用有效微生物对高浓度有机工业废水进行处理实验,初步探讨了影响有效微生物废水处理的几个重要主其特点。首先对有效微生物进行驯化,然后进行工业废水处理实验。结果表明,采取间歇式曝气,采取间歇式曝气,接种量为１／５０００,酸度控制在偏酸性范围,与常规废水处理相比,具有节约能源、废泥产生量少、除臭等特点。     

ICP/ MS 法对实验室用水的分析

采用电感耦合等离子光谱和质谱法对超纯水、去离子水和蒸馏水3种实验用水进行半定量和定量分析。通过对主要相关元素的分析结果比较，超纯水的水质优于其他两种，更适宜作为无机元素痕量分析的实验用水。     

硫化物溶液标准物质稀释后稳定性的研究

本文在稀释后硫化物溶液稳定性实验研究的基础上,提出硫化物溶液用纯水稀释均匀性好,但稳定性差;用pH4.5的缓冲溶液稳定和用0.2%乙酸锌—乙酸钠溶液稀释可在2周内使用;用乙酸锌—乙酸钠溶液稀释,稀释溶液可稳定3周的结论。     

APV激光流场诊断系统及其应用

讨论了ＡＰＶ系统的测量原理,散射光性质数值模拟和测量光路布局方法,并应用该系统对细水雾流场特性进行了测量研究。     

高超声速风洞进气道流量系数测量精度影响因素研究

进气道是飞行器动力装置的重要组成部分,准确测量进气道流量系数是进气道风洞试验的重要内容。对来流马赫数Ma=4.5,5.0和6.0状态下皮托管进气道开展流量系数测量研究,通过对比理论值和实测值,获取各状态流量系数修正系数。试验结果表明,随着来流马赫数增加,进气道流量系数与理论值偏差较明显,并逐渐增大。超声速风洞试验通常认为测量截面总温与来流总温相等,通过对测量截面总温与来流总温偏差以及测量截面流场畸变情况的分析,判断测量偏差主要是由测量截面总温等于来流总温的假设导致的。在高超声速风洞试验中,由于模型壁面热交换的存在,测量截面总温低于来流总温,进气道流量系数测量时需要进行总温修正,以提高流量测量精度。      

Ecological Rhetoric through Vicarious Narrative: The Enduring Significance of Garrett Hardin's The Tragedy of the Commons

“The Tragedy of the Commons,” a 1968 article on overpopulation by Garrett Hardin, achieved rapid and widespread popularity, and still remains influential. Hardin uses an extended hypothetical example that functions as a vicarious narrative to postulate a syllogistic proof he then applies enthymematically and by analogy to social and environmental issues. Although Hardin's inconsistent application of his analogy reveals that adopting his rhetorical strategy in environmental communication necessitates acceptance of neither Hardin's overpopulation thesis nor his political and social views, his article remains a landmark in environmental as well as ecological rhetoric.     

Projecting Canadian Prairie Runoff for 2041–2070 with North American Regional Climate Change Assessment Program (NARCCAP) Data

The South Saskatchewan River Basin (SSRB) of Alberta, Canada, is semiarid and under severe water stress due to increasing human demands. We present the first examination of projected changes in SSRB runoff from a large set of North American Regional Climate Change Assessment Program regional climate models (RCMs) plus one Coordinated Regional Climate Downscaling Experiment RCM. We used six different runoff estimation methods: total surface and subsurface runoff (total runoff), surface runoff, and four estimations based on Budyko functions. Most RCM estimations showed substantial biases and distribution differences when compared to observed data; thus bias correction was necessary. Total runoff was the best of the six variables in modeling observed runoff for each of the four SSRB subbasins. Projected total runoff for 2041–2070 shows a geographic gradient in the SSRB, with possible drying in the southern Oldman River subbasin and possible increased runoff in the northernmost Red Deer River subbasin. A shift to an earlier spring peak in runoff and drier late summer, with a need for increased irrigation, should be expected. In a first examination of the important question of projected changes in interannual variability, we show increasing magnitude. This result further adds to adaptation challenges over the course of this century in this basin, which is already largely closed to further allocation.     

高层建筑火灾防烟空气幕的实验研究

通过分析高层建筑火灾时引起烟气流动的因素 ,建立了高层建筑火灾时防烟空气幕流量、吹风口宽度和吹风口的射流速度的计算模型。通过实验研究 ,验证了理论计算的正确性     

几种防灰结构消声元件性能参数的试验研究

介绍一种阻性和抗性组合式消声箱的试验，通过不同结构的组合几种防灰结构消声元件的性能参数进行试验研究。结果表明，防灰结构消声器的经验设计法是可行的，通流断面的变化对消声器的压力损失影响较大。     

关于学校化学教学实验废液量及废液管理状况的调研报告

利用基于实验内容的废液量统计方法，对北京大学、湖南大学、首都师范大学3所有代表性高校的化学实验教学中心以及3所普通高中的废液量进行了统计。得到的数据对于学校实验室废液的管理具有一定的参考价值。通过网页浏览、文献检索、实地考察、电话访谈等方式对国内一些知名大学的废液管理状况进行了考查，针对存在的主要问题，提出了进一步加强学校实验室废液管理的建议。