Effects of sulfur dioxide and nitric oxide on mercury oxidation and reduction under homogeneous conditions

This paper is particularly related to elemental mercury (Hg0) oxidation and divalent mercury (Hg2+) reduction under simulated flue gas conditions in the presence of nitric oxide (NO) and sulfur dioxide (SO2). As a powerful oxidant and chlorinating reagent, Cl2 has the potential for Hg oxidation. However, the detailed mechanism for the interactions, especially among chlorine (Cl)-containing species, SO2, NO, as well as H2O, remains ambiguous. Research described in this paper therefore focused on the impacts of SO2 and NO on Hg0 oxidation and Hg2+ reduction with the intent of unraveling unrecognized interactions among Cl species, SO2, and NO most importantly in the presence of H2O. The experimental results demonstrated that SO2 and NO had pronounced inhibitory effects on Hg0 oxidation at high temperatures when H2O was also present in the gas blend. Such a demonstration was further confirmed by the reduction of Hg2+ back into its elemental form. Data revealed that SO2 and NO were capable of promoting homogeneous reduction of Hg2+ to Hg0 with H2O being present. However, the above inhibition or promotion disappeared under homogeneous conditions when H2O was removed from the gas blend.     

利用百合(Lilium davidii)根尖细胞的微核细胞率作为环境监测指标的探讨

首次报道了利用百合根尖细胞微核细胞率作为环境监测指标的可行性和优越性。实验证明,百合根尖比蚕豆根尖细胞的微核细胞率更敏感。     

企业实用安全评价方法初探--一种简单易行的企业自我评价方法

分析了当前我国安全评价中存在的问题,探讨一种企业实用的安全综合评价方法.介绍该方法的评价原理、程序和步骤,总结该评价方法的功能、特点和适用范围,提出改进方向.     

丹江口水库总氮较高原因初步分析

通过对丹江口水库库区、河南省辖入库河流及其它水体含氮类指标的对比,对水库总氮偏高的原因加以分析,指出总氮标准与硝酸盐、氨氮标准有差异,提出合理评价总氮指标及水库水质、加强水质保护措施的建议。     

芦笛·芦叶·芦花

早春二月,与小草一起先绿起来的要数河滩上的芦苇了。一场春雨过后,芦苇就像竹笋一样直往上窜,一天一个样子,好似在一夜之间,河边的芦苇长得就有人高了,这时河滩上是我们玩耍最多的地方。 从河滩上传出的除了我们的阵阵笑声外,就是我们吹出的没有一点节奏的芦笛声了。最初吹出的芦笛声只有自己才能听到,现在想起来那种声音也不知算不算是芦笛的声音。那时的芦苇刚刚冒尖不久,我们抽出芦苇中间嫩嫩的芦     

海底大地震

您以为只有陆地才经常发生地震吗?不,在深深的海底,也经常发生地震。据统计,全球80％的地震都集中在幽深的海底,特别是在太平洋周围海洋平均深度4000米以上,终年暗无天日的海沟里以及它附近与群岛区的深渊中尤为多见。     

图书馆消防安全--重中之重

尽管公共场所建筑物的消防安全历来是一个重要问题,国家每年都要投入很大的人力、物力来加强预防措施以避免出现人员及财产的重大损失,但终日警钟长鸣也还是存在缝隙,仅最近一个时期,各地就连续出现公共建筑物失火伤人的重大事故。因此,日常的防微杜渐工作是十分重要的。     

非煤矿山安全评价方法探讨

介绍了非煤矿山安全评价的内容和方法,分析了目前评价方法的不足和缺陷,提出了一种新型非煤矿山安全评价方法,并结合湖北某石膏矿山安全评价的实例,阐述了这种评价方法的应用过程,最后对这种方法提出改进建议。     

危险废物风险评价与管理

从危险废物风险评价的基本含义人手,在讨论了危险废物风险评价应遵循的原则和评价依据基础上,就危险废物风险评价方法、评价内容和评价程序等内容进行了探讨。在参考相关参数和模型的基础上重点论述了危险废物风险评价参数的选择和模型。最后提到了危险废物风险评价的管理,提出了一种风险管理体系。     

Using game theory to describe strategy selection for environmental risk and carbon emissions reduction in the green supply chain

This paper provides an approach in the context of green supply chain management, using game theory to analyze the strategies selected by manufacturers to reduce life cycle environmental risk of materials and carbon emissions. Through the application of the ‘tolerability of risk’ concept, a basis for determining the extent of environmental risk and carbon emissions reduction has been established. Currently, scant attention is given to holistic supervision of the supply chain with respect to carbon emissions by governments, and thus the starting hypothesis here is that the default strategy that manufacturers will adopt is only to reduce carbon emissions, and thereby environmental risk, in so far as this is compatible with the aim of increasing revenue. Moreover, we further hypothesize that, once necessary governmental policy has been established in the supply chain management, the strategic choices of the manufacturers would be influenced by government penalties or incentives. A case example is provided to demonstrate the insight that indicates the application of game theory. The limitations of the game model and analysis are discussed, laying a foundation for further work.