Geochemical Mapping——Evolution of Its Aims, Ideas and Technology

The development of geochemical mapping progressed from local geochemical prospecting through regional geochemical exploration and regional geochemical mapping to national and global geochemical mapping. This paper discusses the evolution of aims, ideas and methodology of geochemical mapping in Western countries, Russia and China. The sophistication of geochemical mapping methodology will make great contributions to solving resources and environmental problems in the 21st century.     

交通行业应用型测绘工程专业实践教学体系构建与实践

实践教学是应用型人才培养的重要环节和关键因素。在交通行业背景下,文中针对华东交通大学测绘工程专业特点,以培养测绘工程专业实践能力强、创新务实的高素质应用型人才为目标,在深入研究该专业实践教学规律的基础上,构建集实践技能培养和创新能力培养于一体的测绘工程专业实践教学体系,并通过实践验证该体系的合理性和有效性。     

Applied geomorphology and the impact of natural hazards on the built environment

This paper examines the scope and limitations of geomorphological investigation of the sites of architectural and engineering works. Various degrees of vulnerability, forms of impact, and types of applied geomorphological response are summarized. Aspects of land development and construction practice that may increase the vulnerability of buildings and structures to geomorphological hazards are discussed. Strengths and weaknesses of the geomorphological input to hazard mitigation are reviewed. Examples are described that show both negative and positive influences exerted by geomorphological site analysis on urban and regional planning for unstable terrains in Italy. It is concluded that societal choice, within the overall matrix of a society's culture (sensu largo), will influence the way in which vulnerability is managed at sites, and hence the scope for utilizing geomorphological analysis of the physical risks.     

地震分析预报实用化软件联调系统简介

本文主要介绍各学科实用化攻关与综合预报以及专家系统等软件组成的统一软件系统,使该软件系统与在 IBM 机和 VAX 机上建立的数据库联接起来,并介绍了该系统的主要功能。     

无人机机载SAR在地理国情监测中的应用研究

在我国,由于特殊的地理位置和气候条件使得局部地区获取数据较为困难,导致在地理国情监测中利用传统光学成像监测手段获取数据难以满足监测需求。随着无人机机载微型化合成孔径雷达高分辨率对地观测成像技术的不断发展,使得全天时、全天候航空遥感监测成为可能。本文通过对无人机机载合成孔径雷达监测系统集成构建,利用该套系统高分辨率微波成像,验证了其在地理国情监测应用中的适用性。为无人机机载SAR技术在地理国情监测中的应用提供了新的解决手段。     

Suburban Food Security: Walkability and Nutritional Access in Metropolitan Detroit

This article explored the relationship between the local food environment and walkability in the socioeconomically diverse, inner-ring suburbs of metropolitan Detroit. The availability and cost differentials of food were surveyed using a modified version of the Nutrition Environment Measures Survey for Stores (NEMS–S), and a geographic information system–based method was designed to map walkability relative to licensed food retail establishments. Results showed that minority communities lack access to fresh produce and nutritionally adequate foods, which is compounded by limited mobility. By incorporating local-based economic incentives, low-income communities can better align neighborhood goals of obtaining nutritionally adequate food (and other services) with economic opportunity.     

方斑东风螺性畸变现象的解剖学和组织学研究

以解剖学和组织学方法研究了方斑东风螺未成熟和成熟的正常雌、雄个体以及性畸变个体的生殖系统结构.性畸变个体除具有正常的雌性器官外,还有输精管或阴茎.在正常雄性输精管的个体发育过程中再现了系统发育的过程,而且在性畸变个体输精管的形成过程和发育过程中组织学结构特征的变化与正常雄性输精管的个体发育过程的相似.性畸变雌体的性腺发育受阻.目前,性畸变现象仅存在于成熟个体,但这并不表明未成熟个体中不会发生性畸变现象.具有较高食用价值的方斑东风螺因有机锡污染可能会对人类健康不利,应引起人们的关注.     

海马(HIPPOCAMPUS)消化道的解剖学与组织学研究

本文研究了大海马Hippocampus kuda Bleeker,日本海马H·japonicus kauP和三斑海马H.trimacutatue Leach消化道的形态学。三种鱼类消化道的解剖学特点基本相同。消化道均可区分出头肠、前肠、中肠和后肠。中肠最长。口孔小,口腔呈管状,口鳃腔内无齿,无鳃耙,无舌,鳃孔小。不具胃,也无幽门垂,中肠前部稍为扩大形成假胃。 组织学方面共同特点为:粘膜上皮主要由柱状细胞和球形分泌细胞组成。上皮内无多细胞消化腺,未发现味蕾。大海马与日本海马在食道纵褶的形状,球形分泌细胞的分布区,假胃肌层的排列及上皮细胞的形状等方面有种的差别。     

玉米栽培研究中的数据库管理系统应用程序

本系统是为玉米高产、稳产栽培试验研究而编制的。作者着重介绍数据库管理系统与应用程序包之间交互作用,数据库的条件检索方法以及整个系统的结构和功能。研究过程中证实,使用本系统大大提高了工作效率。