新型杀菌剂双季铵盐BQAS性能试验研究

新型杀菌剂双季铵盐以其低毒、性能优良而受到广泛的关注。以自制的N,N-二甲基十二烷基叔胺和1,4-二溴丁烷为原料合成产物双季铵盐(BQAS)。对双季铵盐BQAS的杀菌性能及缓蚀性能研究表明,双季铵盐对SRB和TGB的杀灭能力均优于1227,双季铵盐在有氧中性水介质中表现出一定的缓蚀性能,并具有较强的杀菌能力,是一种吸附成膜型缓蚀剂。     

实施经济可持续发展战略方法初探

通过对人类社会生态环境系统物质循环全过程的研究得出:实现资源高效可持续利用是实施可持续发展战略的关键;实施可持续经济发展战备必须从人类社会经济系统发展的全过程考虑;生产环节要推行清洁生产和标准化管理;消费领域要倡导绿色消费方式;发展循环经济,减少人类活动对自然环境的压力。     

井下作业温度对事故影响关系的灰色关联分析

笔者基于灰色系统理论 ,结合煤矿井下运输生产实际 ,建立了以死亡人数为参考数列、以不同作业温度为比较数列的灰色关联分析体系。通过对构造的不同数据列的无量纲化处理、求取差序列 ,计算灰色关联系数等 ,得到了不同作业温度对伤亡事故影响的灰色关联度 ,并据此分析结果而找出了井下作业温度对死亡事故的影响关系 ,为预防事故发生、减少伤亡损失及改善作业环境提供了有用的依据     

延津县沙荒地的开发与治理

本文客观地分析了延津县沙区的自然资源状况，开发潜力及存在的问题，提出了开发治理的方向和关键技术，为我国同类地区风沙化土地的开发治理提供了经验。     

地震勘探作业过程中环境保护措施分析

文章对目前国内地震勘探作业过程中的环境保护措施现状进行了分析,并对照部分国外石油公司的作法和IAGC及国家《清洁生产促进法》的要求寻找差距,再结合国内的实际情况提出了对地震勘探作业环境保护措施的建议,同时为国内物探行业开拓国际市场,树立绿色施工、文明施工、清洁施工的良好企业形象提供了有益的参考。     

在地震勘探作业中实施"绿色勘探"

根据国家和中国石油天然气集团公司有关清洁发展、环境保护的要求,结合地震勘探生产作业的特点和实际情况,提出在地震勘探作业中实施绿色勘探需要开展的主要工作,以及完成这些工作所要具备的必要条件.     

危险化学品活性反应危害及混配危险的规则研究(XV)

第五十六类无机碱 活性特点: 无机碱一般为金属氢氧化物.常见的无机碱包括碱金属氢氧化物、碱土金属氢氧化物等.其中最常用的为碱金属氢氧化物,如氢氧化钠、氢氧化钾等.     

Bamboo charcoal enhances cellulase and urease activities during chicken manure composting: Roles of the bacterial community and metabolic functions

Microbial enzymes are crucial for material biotransformation during the composting process. In this study, we investigated the effects of adding bamboo charcoal (BC) (i.e., at 5%, 10%, and 20% corresponding to BC5, BC10, and BC20, respectively) on the enzyme activity levels during chicken manure composting. The results showed that BC10 could increase the cellulose and urease activities by 56% and 96%, respectively. The bacterial community structure in BC10 differed from those in the other treatments, and Luteivirga, Lactobacillus, Paenalcaligenes, Ulvibacter, Bacillus, Facklamia, Pelagibacterium, Sporosarcina, Cellvibrio, and Corynebacterium had the most important roles in composting. Compared with other treatments, BC10 significantly enhanced the average rates of degradation of carbohydrates (D-xylose (40%) and α-D-lactose (44%)) and amino acids (L-arginine (16%), L-asparagine (14%), and L-threonine (52%)). We also explored the associations among the bacterial community and their metabolic functions with the changes in the activities of enzymes. Network analysis demonstrated that BC10 altered the co-occurrence patterns of the bacterial communities, where Ulvibacter and class Bacilli were the keystone bacterial taxa with high capacities for degrading carbon source, and they were related to increases in the activities of cellulase and urease, respectively. The results obtained in this study may help to further enhance the efficiency of composting.     

Effect of plant-based carbon source supplements on denitrification of synthetic wastewater: focus on the microbiology

Environmental Science and Pollution Research - The effects of plant-based carbon source addition on wastewater NO3?-N removal and the involved microorganisms, especially denitrifying...     

A facile hydrothermal method–fabricated robust and ultralight weight cellulose nanocrystal-based hydro/aerogels for metal ion removal

Environmental Science and Pollution Research - Heavy metal ion contamination, in particular that associated with Pb2+, Cd2+, and Cu2+, poses a considerable threat to aquatic environments and human...