矿井通风系统评价的可拓方法

首先提出通风系统评价的指标体系,该指标体系主要涵盖了技术可行性、经济合理性和安全可靠性等3个方面的13个评价指标;然后应用可拓学的理论与方法,建立多层次可拓综合评价模型。该模型以综合关联度作为评价准则,避免了评价中的主观性。通过将该方法对河南神火煤电股份有限责任公司新庄矿通风系统进行评价,指出该矿通风系统整体状况的优劣,通风系统中存在的问题并提出了相应的改进对策。结果表明,该方法较其他评价方法更加客观,结论更符合生产实际。     

Effect of objective risk on key actor support for seismic mitigation policy

This article investigates the policy formulation process related to seismic hazard mitigation. A preemergent policy climate is identified by focusing on key actors, assessments of seismic risk, and policy alternatives. Two major factors were found to affect key actor support for policy development: (a) the objective risk to which their constituent community is exposed, and (b) their elective or appointive position at the local level of government.     

Effect of Degree of Substitution of Octenyl Succinate Starch on the Emulsification Activity on Different Oil Phases

Octenyl succinic starch (OSA starch) was synthesized from an aqueous medium and pyridine medium using previously established literature methods. Such a substitution would conceivably impart some hydrophobicity to the already hydrophilic starch chain. Thus, an amphiphilic character could be introduced wherein while the water solubility of the final product would be retained or enhanced, interactions with hydrophobic phases could be enhanced. These products find a variety of applications. The emulsifying activity of OSA starch was tested against different oil phases. It was found that the activity was dependent on the oil phase chosen. The activity was largely independent of the concentration of the substrates when the modification was conducted in an aqueous medium. Products from an organic medium did show an increase in activity with concentration. This difference in activity was attributed to the molecular weight of the final product, which seemed to be lower for the products from an organic medium as suggested by viscometry. The granular state of starch could also have a great effect on the properties of modified starch.     

Degradation of Cellulosic Materials Under the Alkaline Conditions of a Cementitious Repository for Low- and Intermediate-Level Radioactive Waste. II. Degradation Kinetics

The degradation of cellulosic materials, differing mainly in the degree of polymerization and the number of reducing end groups, was studied under the alkaline conditions similar to those existing in a cementitious repository for low- and intermediate-level radioactive waste (pH 13.3, T = 25°C). The kinetics of alkaline degradation (peeling-off reaction) were studied and the data analyzed by the model of Haas et al. [13]. The observed kinetic parameters for the propagation reaction and overall stopping reaction were compared with literature data. Although measured under different experimental conditions, literature data and data from this study show a consistent picture. Differences in the extent of degradation observed for the different cellulosic materials could be satisfactorily explained by differences in reducing end group content and, consequently, by differences in the degrees of polymerization. Besides the number of reducing end groups, the degree of amorphousness also plays an important role. The main degradation products formed under the experimental conditions used are - and -(gluco)isosaccharinic acid. This is in agreement with many other studies on alkaline degradation of cellulose. The two isomers are formed in roughly equal amounts.     

矿井(煤矿)通风系统安全度

分析了矿井（煤矿）通风系统的安全性,提出了评价矿井通风系统安全性的指标,确定了矿井通风系统安全性等级。     

井下运输人—机—环境系统安全性灰色多层次综合评判

为了分析与评价井下运输系统的安全状况,笔者基于灰色关联分析理论,确定了井下运输系统安全状况综合评判的指标体系,建立了灰色多层次安全综合评判模型。通过对影响井下运输系统安全的人、机、环境的１１ 种因素进行的实际分析与计算,指出了井下不同运输子系统的安全状况及其薄弱环节。该方法使评判结果更具科学性、可比性和实用性,而且为进一步搞好安全评价工作提供了理论依据。     

不同水源补给情形的溪流沟渠沉积物磷形态及释放风险分析

2015年5~12月,在合肥地区3条分别以城市污水厂尾水、食品加工废水和农业排水-地下水渗流为主要补给水源的溪流沟渠上,按季节采集表层沉积物样,分析沉积物磷赋存形态;通过磷吸附指数(PSI)、磷吸附饱和度(DPS)和磷释放风险指数(ERI)计算,评估溪流沟渠沉积物的磷潜在释放风险,并以非参数检验方法,对3条溪流沟渠开展差异性分析.结果表明:1关镇河支渠和陶冲小溪流水体磷素污染严重,3条溪流沟渠磷污染程度排序为:关镇河支渠陶冲小溪流磨店小溪流,其中关镇河支渠沉积物TP平均含量为1 376.95 mg·kg-1,分别是磨店小溪流和陶冲小溪流的2.94和1.91倍;2 3条溪流沟渠沉积物中各形态磷含量差异显著,且在含量高低排序方面存在一定差异性;3 3条溪流沉积物的PSI值季节性变化特征明显,而且每条溪流沟渠所有采样点变化规律基本一致,即总体上都表现出秋季最高,冬季次之,春、夏季基本相当且相对最低的变化特征;4由PSI、DPS及ERI评估得到的磷释放风险特征基本一致,相应的磷释放风险高低排序为:关镇河支渠陶冲小溪流磨店小溪流;5差异性分析表明,3条溪流沟渠几乎在所有指标上存在显著的差异性.     

电力通信机房监控系统对室内空气净化程度检测研究

为解决当前电力通信机房室内空气监控系统抗干扰能力弱,室内空气净化检测精度低等问题.设计了基于ARM的电力通信机房室内空气监控系统,以提高室内空气净化检测精度.选用DHT11温度传感器,引入专用数字单元采集技术和温度传感技术,实现空气温度监控.安设 HS1101传感器,监控空气湿度.采用OLED液晶显示作为系统的可视化窗口,完成电力通信机房监控系统设计.实验结果表明,该系统能耗低,抗干扰能力强,为准确检测室内空气净化程度起到重要作用.     

融雪剂对园林植物种子萌发的影响

使用融雪剂是高纬度城市冬季除雪的主要措施之一,但融雪剂中含有的盐类物质可以对园林植物造成伤害。在此研究了融雪剂对刺（Robinia pseudoacacia）、万寿菊（Tagetes erecta）、矮紫薇（Lagerstroemia indiea’Petite pinkie＇）、草地早熟禾（Poa pratensis）、侧柏（Platycladus orientalis）种子发芽率和相对受害率的影响。试验结果表明：5种植物种子的发芽率随融雪剂浓度的升高而降低．相对受害率则随融雪剂浓度升高而增大。其中草地早熟禾种子时融雪剂最敏感,可以用草地早熟禾种子萌发为指示,间接检验融雪剂对植物的伤害程度。     

环境与经济协调发展定量评判及实例分析

根据协调发展理论构建了环境-经济协调发展评价指标体系,采用基于层次分析法和熵权法的组合赋权法确定各项指标的权重,运用协调发展度模型对安徽省环境与经济协调发展状况进行了纵向的动态对比分析,得出安徽省环境与经济协调发展度呈现由不协调发展-中级协调环境滞后型-良好协调经济滞后型的演化轨迹。并提出安徽省环境与经济协调发展的对策建议。