经理致词

中国石化北京石油化工工程公司自创业以来的指导思想是抓住时代给予的挑战和机遇,以始终如一的敬业精神为社会、为客户提供一流技术和服务。本公司四十五年来完成了国内外上千个工程项目的设计建设。     

用心丈量大地的人——记灵宝市土地与矿产勘查测绘中心主任郭海生

匆匆地行走,背负着阳光雨露,背负着春夏秋冬。打桩、立标、测绘、读数、记录,然后扛着仪器继续前行,日复一日地重复着这样的动作,既单谓又乏味。灵宝市国土资源局土地与矿产勘查测绘中心主任郭海生从2006年起就干起了这一行当,且乐此不疲,其顽强意志和敬业精神可见一斑。     

袁复礼教授对中国地质教育的贡献及主要学术成就

1993年12月31日是著名的地质学家、考古学家和地质教育学家袁复礼教授百年诞辰,我国20多个学术团体和地质单位将联合举办纪念活动及学术报告会,中国地质大学出版纪念专辑,几代学生撰文弘扬袁老师的历史功绩与高尚品德,说明袁老师的敬业精神感人之深。     

抓住冬闲良机 结合乡村换届——宁陵县在全县党员干部中开展国土法律知识培训活动

由中央和国务院六部委倡导的全国县乡村国土资源法律知识培训活动,全省自2007年10月10日开始,截至目前,已经基本结束。如何进一步巩固和发展这一成果是摆在各级领导面前需要回答的问题。在这方方面,宁陵县的同志们以他们的创新实践给人们做出了令人鼓舞的回答。他们这种不等不靠的创新精神和进取敬业精神很值得我们认真学习。     

"全国建设行业技术能手"温关成同志的事迹

在社会主义现代化建设事业中,建设系统涌现出了一批优秀的技术能手,他们具有良好的职业道德、敬业精神和技术技能水平,取得了明显的经济和社会效益。此次全国建设行业技术能手的评选,勘察设计领域共有9位同志获得光荣称号,对这些同志的先进事迹,我刊将进一步整理,在“人物表彰”栏目中宣传报道。     

打不垮的国土铁人——记平舆县国土资源局副主任科员马超

在平舆县国土资源局,主管执法监察工作的局党组成员、副主任科员马超同志,从事国土资源工作20多年,一直以饱满的热情、严谨的态度、扎实的作风,认真做好每一项工作,得到了领导和同事们的一致肯定。而3年来,他以顽强的意志与病魔抗争,带病坚持工作的敬业精神,更是为人们所称道,人们称他是＂打不垮的铁人＂。     

教学评估方法浅析：学生评教意见的合理采纳

教学评估是一项评估指标具有模糊性,评估层面具有多样性的特殊评估工作,其中对学生层面的评估信息历来十分重视,但目前高校学生群体中普遍存在的对课程学习缺乏主动性的现实,使我们在采纳其评估意见时必须认真筛选,合理使用,其重点应放在其对教师敬业精神,理论知识水平的课堂表现以及教学方法的革新等几个较易获得客观评价的方面。     

关于表彰全国建设行业技术能手的通报

各省、自治区建设厅,直辖市建委及有关部门,新疆生产建设兵团建设局: 在社会现代化建设事业中,建设系统涌现出了一批优秀的技术能手,他们具有良好的职业道德、敬业精神和技术技能水平,取得了明显的经济和社会效益。根据《评选全国建设行业技术能手的通知》精神,为了表彰和宣传建设行业优秀技术能手,配合全国技术能手的评选,经过单位申报,省、自治区、直辖市建设行政     

深化改革 不断创新 努力为我国勘察设计事业做出新贡献——在中国勘察设计协会四届一次常务理事会上的书面讲话

同志们: 建设工程勘察设计是建设过程中的重要环节,勘察设计的好坏直接决定了建设项目的投资效益、环境效益、社会效益。党和政府历来就十分重视勘察设计工作,十分珍惜勘察设计人员的创造性劳动成果。 我国勘察设计涉及各行各业,设计人员是一支知识资源丰富、技术人才密集、敬业精神强和具有创造性的科技队伍。改革开放以来,勘察设计体制、经营模式和运作机制发生了重大的改革。广大     

永恒的回忆——写在父亲逝世10周年之际

我们的父亲出生在一个淳朴的农民家庭,简朴的生活培育了他对故土、对人民深厚朴素的感情。他为人正直,性情豁达,襟怀坦荡。在遭遇坎坷时,始终对生活充满热爱和信心。父亲作为中国老一代的土壤学家,为了中国土壤科学的发展和农业生产的进步呕心沥血,经常奔波忙碌在祖国各地。在他主持和参加过的工作中,如西藏和新疆等地的农业综合科学考察、湖南南山牧场的建设和华北黄淮海盐碱地治理等主要工作中,处处体现出他的爱国之心和敬业精神,使我们深受教育,激励着我们永远前进。     

矽卡岩化作用排碳到大气中的途径SCIEI北大核心CSCD

鉴于大陆岩浆弧上盘广泛分布有碳酸盐岩,岩体上升侵位过程使其碳通量明显的高于洋内岛弧,从而有可能影响着地质历史长时间尺度(百万年)的气候变化。陆弧碳的排放可分为两部分,一部分是与喷出岩相关的火山作用,另一部分是与侵入岩相关的脱碳过程。侵入岩的体量一般是喷出岩体量的10倍以上,由此与侵入岩有关的脱碳作用释放的碳通量不可忽视,可能类似与喷出岩有关的火山作用释放的碳通量甚至更大。火山作用能够将气体直接排入大气中,因此在以往的工作中研究较为充分。但与侵入岩相关的脱碳过程如:矽卡岩化,发生在地下,关于地下脱碳过程如何将碳释放到大气中还缺少详细的工作。本文,通过对比研究火山地区和非火山地区与侵入岩相关的深部脱碳过程,发现深部碳可以通过区域断层系统、地下水系统和热泉、火山通道、隐爆角砾岩筒、高频率的岩浆热液事件等途径瞬时地释放进入大气。通过初步估算,发现单个矽卡岩矿化事件所产生的二氧化碳通量(0.02~0.2Mt/yr)能够与目前地球绝大部分的普通单个火山的碳通量(<0.5Mt/yr)类比。因此岩浆深部脱碳过程对大气的影响至少与火山相当,其对气候的影响不可忽视。     

Farewell to Wynand Kleingeld (1946 to 2020)

Mathematical Geosciences -     

An extension to the DRASTIC model to assess groundwater vulnerability to pollution: application to the Haouz aquifer of Marrakech (Morocco)

An extension to the DRASTIC model is proposed in order to assess aquifer vulnerability to pollution. In contrast to the DRASTIC model, which considers the unsaturated and saturated zones together and computes a global intrinsic vulnerability index, the suggested approach discriminates between the aquifer vertical vulnerability (a concept related to the pollutant percolation) and the groundwater susceptibility (a concept that depends on the behaviour and uses of the groundwater). This approach is applied to the Haouz aquifer (Morocco) that supplies water to the Marrakech area. This aquifer is widely overexploited and there is evidence that the groundwater quality is threatened by various sources of pollution. Evaluation of the vertical vulnerability indicates that the aquifer mainly presents a moderate-to-weak vertical vulnerability. The zones potentially most favourable to pollutant percolation are mainly located in Central Haouz, along or near the surface wadis. The aquifer susceptibility is high in places located near the N’Fis, Baaja and Issil wadis. Everywhere else, low-to-moderate susceptibility is observed. This new approach therefore enables areas of vertical vulnerability and areas of susceptibility to be delineated separately. As a result, it constitutes a valuable decision-making tool for optimising the management of aquifer water resources and land-use planning.     

水平定向钻进地层适应性的评价方法

水平定向钻进的地层适应性对施工技术方案、钻具选择、参数选取和施工效益都有着重要影响。应采用钻进地层的岩土硬度、完整性和研磨性三方面指标,对比钻进技术工艺和技术器具特点,对钻进效率、钻孔的成孔和孔壁稳定性、以及钻具寿命等进行定性及定量的评价,从而有利于大大提高水平定向钻进铺管施工的技术和经济效益。     

Modeled Nitrogen Loading to Narragansett Bay: 1850 to 2015

Nutrient loading to estuaries with heavily populated watersheds can have profound ecological consequences. In evaluating policy options for managing nitrogen (N), it is helpful to understand current and historic spatial loading patterns to the system. We modeled N inputs to Narragansett Bay from 1850 to 2000, using data on population, human waste disposal, livestock, fertilizer, and atmospheric deposition. We found that total N loading to the bay increased 250% from 1850 to 2000, and 80% from 1900 to 2000. Loading to the upper bay increased far more than that to the lower bay, and the most important source shifted from non-point animal waste to human waste concentrated at sewage treatment facilities. We also modeled future N loads in 2015 under four management scenarios. Planned improvements in sewage treatment would reduce N loads 9% below business-as-usual, to the 1990 loading rate. Greater reductions, to circa 1900 rates of loading, may be possible.     

Metal ion binding to colloids from database to field systems

Nowadays, environmental problems related to soil pollution with heavy metals are numerous, therefore, it is important to understand metals behaviour in aquatic sediments and soils and to estimate their transfer. The fate of metals in the environment is closely related to their interactions with the major reactive compartments (organic matter, iron and manganese oxides, clays). The objective of this work is to develop an approach based on the combination of several models to study metal ion speciation in different environmental systems. Models used to describe the interactions of metals with the main reactive phases in the soil are CD-MUSIC (amorphous and crystallized iron oxides), NICA-Donnan (organic matter and manganese oxides) and cationic ion exchange model (clays). First, this work implies the definition of generic parameters to describe the interactions of the studied metals with iron and manganese oxides and part of this information is missing in the literature. Then, after a validation of the approach by comparison with analytical results, this multi-surface model is applied to test sites corresponding to one soil and two riverine environments.These new models give good predictions of the behaviour of major and trace metal ions even in heterogeneous systems characteristic of natural environment. The measured free metal concentrations in the solution are in agreement with those obtained from model calculations. In the case of the soil test site, the soil solution composition and speciation are predicted using the soil major constituents characteristics.     

Modelling intra-dependencies to assess road network resilience to natural hazards

Natural Hazards - Estimating the resilience of a road network (one of the essential critical infrastructures in times of crisis) to natural hazards is crucial in achieving the goals of disaster...