太原市公共场所环境空气质量现状与对策分析

对2010年太原市9个公共场所的室内空气质量状况进行检测并做出评价,以便为太原市公共场所空气质量全年的现状以及提出整改对策提供依据。监测发现,太原市在二季度时公共场所内的空气质量相对较好,基本达标;一、四季度在饭店和宾馆这类人群密集场所空气中主要污染物为苯系物,而三季度空气中的污染物主要是甲醛和氨。     

太原市大气环境质量时空变化分析

本研究利用太原市空气质量数据,分析太原市2013至2017年间大气环境质量的时、空变化及发展趋势.结果表明:太原市大气环境质量呈逐年好转态势,其空气质量综合指数呈逐年递减趋势,除二氧化氮外,各污染物浓度逐年下降;太原市市区的空气质量大致呈西北部空气质量最好,中部地区最差,并以太原市市区中部为中心大致呈同心圆状向外辐射,其空气质量由中心向外部逐渐变好.本研究的开展可为改善或治理太原市大气环境质量提供一些科学依据或支撑.     

太原和吕梁环境状况比较分析

以太原市和吕梁市为研究对象,通过对2015—2018年两市各空气质量相关数据的分析,探讨了两市污染物浓度变化趋势。分析得出:PM10和NO2对空气质量的贡献值比较大;根据综合指数判定,太原市空气质量劣于吕梁市;4类污染物浓度呈现各自的变化特征。     

疫情期间太原市空气质量影响因素探讨

综合分析了新型冠状病毒疫情期间2020年1—5月太原市大气空气质量监测数据中大气污染的6项污染物浓度、优良天数、污染物对空气质量指数的贡献度,同时与太原市2019年1—3月的相关大气空气质量监测数据进行了对比。结果表明:因为疫情影响停产停工后空气质量明显好于往年同期,随着复工复产大气中6项污染物浓度又开始逐渐升高,优良天数逐渐减少。基于以,提出了改善太原大气污染现状的建议。     

研究制定《太原市锅炉污染物排放标准》

为了改善太原市环境空气质量，保证2005年空气质量功能区全面达标，促进太原市社会、经济发展和燃煤技术进一步提高，由太原市环境保护局组织成立了锅炉污染物排放标准领导小组，研究制定了《太原市锅炉污染物排放标准》(以下简称《标准》)，并被列为太原市科学技术局重点项目。     

浅谈太原市能源现状与建设清洁能源技术服务平台的必要性

从太原市能源现状、环境空气质量现状等方面进行了论述,指出了太原市在能源利用方面存在的问题。为了改变现状,提高能源利用效率,改变空气质量,提出了建设清洁能源技术服务平台的有效措施。     

论太原市空气质量影响因素

对2014—2017年间太原市AQI指数、空气质量等级和优良天数的变化特征进行了综合分析。研究结果表明,太原市北面、西面AQI指数和优良天数要优于太原市南面和东面,这既有地形地貌的影响,也有产业结构、能源结构、城市发展和汽车保有量等因素的影响。基于太原市环境空气质量的现状和存在的问题,提出了减缓太原市大气污染的建议。     

低碳背景下太原市大气O3和PM2.5协同防治研究

近年来,太原市推行重污染企业关停和防治,城中村改造和市容市貌综合整治等,环境空气质量明显好转.煤焦钢铁产业污染排放量大,及盆地地形和静稳天气等不利条件,使太原市环境空气质量改善面临巨大压力.本研究简要分析了太原市近五年环境空气质量的演变趋势,污染源贡献,最后从空气质量改善需求提出太原市2020-2060年低碳背景下的能...     

论API指数和综合污染指数

ＡＰＩ指数法和综合污染指数法均是反映和评价城市环境空气质量状况的方法,它们既有联系,又有区别。通过２种评价方法在对城市空气质量状况进行评价时,所反映出的２种不同的评价结果的论述（太原市为例）,从而指出２种方法的局限性和需要进一步改进和完善的地方,使这２种方法在实际应用中更好地发挥作用。     

太原市清洁能源项目执行情况评价及发展前景分析

从环境目标、规划项目实施情况、其他清洁能源行动目标三个方面对太原市清洁能源项目执行情况进行分析评价,说明清洁能源行动项目的实施对城市大气环境和空气质量的改善起到积极作用,并进一步提出太原市清洁能源的发展前景。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

海南岛地体及其毗邻陆缘晚中生代—新生代古地磁研究和构造演化

本文叙述了对海南岛及其毗邻大陆边缘白垩纪到第四纪地层岩石进行古地磁研究的全部工作过程。通过分析岩石中剩余磁矢量的磁偏角及磁倾角的变化,提出海南岛白垩纪以来经历的构造演化模式如下:早期伴随顺时针旋转而向南迁移,后期伴随逆时针转动并向北运移。联系该地区及邻区的地质、地球物理资料,对海南岛上述的构造地体运动提出以下认识:北部湾内早期有一拉张作用,主要是该作用使湾内地壳显著伸长减薄,形成北部湾盆地。从而导致了海南岛的早期构造运动,而海南岛后期的构造运动则主要是受南海海底扩张的影响。海南地体运动规律的阐明对于了解北部湾油气盆地的形成演化有重要的理论和实际意义。     

An Index mechanism for multi-scale view in spatial databases

There are numerous geometric objects stored in the spatial databases. An importance function in a spatial database is that users can browse the geometric objects as a map efficiently. Thus the spatial database should display the geometric objects users concern about swiftly onto the display window. This process includes two operations:retrieve data from database and then draw them onto screen. Accordingly, to improve the efficiency, we should try to reduce time of both retrieving object and displaying them. The former can be achieved with the aid of spatial index such as R-tree, the latter require to simplify the objects. Simplification means that objects are shown with sufficient but not with unnecessary detail which depend on the scale of browse. So the major problem is how to retrieve data at different detail level efficiently. This paper introduces the implementation of a multi-scale index in the spatial database SISP (Spatial Information Shared Platform) which is generalized from R-tree. The difference between the generalization and the R-tree lies on two facets: One is that every node and geometric object in the generalization is assigned with a importance value which denote the importance of them, and every vertex in the objects are assigned with a importance value,too. The importance value can be use to decide which data should be retrieve from disk in a query. The other difference is that geometric objects in the generalization are divided into one or more sub-blocks, and vertexes are total ordered by their importance value. With the help of the generalized R-tree, one can easily retrieve data at different detail levels.Some experiments are performed on real-life data to evaluate the performance of solutions that separately use normal spatial index and multi-scale spatial index. The results show that the solution using multi-scale index in SISP is satisfying.     

《Chinese Science Bulletin》SUBJECT INDEX TO VOLUME 59(2014)

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Achieving Unusual States of Matter Under High Pressure

The elongation method,originally proposed by Imamura was further developed for many years in our group.As a method towards O(N)with high efficiency and high accuracy for any dimensional systems.This treatment designed for one-dimensional(ID)polymers is now available for three-dimensional(3D)systems,but geometry optimization is now possible only for 1D-systems.As an approach toward post-Hartree-Fock,it was also extended to     

Exciton Seebeck in Molecular Systems

Various applications relevant to the exciton dynamics,such as the organic solar cell,the large-area organic light-emitting diodes and the thermoelectricity,are operating under temperature gradient.The potential abnormal behavior of the exicton dynamics driven by the temperature difference may affect the efficiency and performance of the corresponding devices.In the above situations,the exciton dynamics under temperature difference is mixed with