Survey of Trogoderma spp. in Spanish mills and warehouses

The distribution of Trogoderma granarium Everts has expanded steadily in recent years. This is a very destructive coleopteran species with many economic implications for the trade of grains in countries where it is present. Therefore, it is important to gather data that can confirm or reject the pest’s establishment in a particular country. Spain has been cited as a location where the species is established; however, the present study demonstrates that no actual data support its stablishment in Spain. We surveyed fifteen storage premises (mills and warehouses for animal feed, wheat, and rice) distributed along the Iberian Peninsula over two years. We used traps baited with Trogoderma spp. sex pheromone to conduct the survey. Collected samples were morphologically and molecularly identified, since the morphological identification of this species is difficult. Although we found populations of T. inclusum in most of the sampled premises, and even T. variabile in one of them, no T. granarium was found in any of them. Abundant samples of other coleopterans were captured in the traps, including Oryzaephilus surinamensis, Tribolium spp., Sitophilus spp., Cryptolestes ferrugineus, Lasioderma serricorne and Rhyzopertha dominica. In conclusion, no T. granarium was found in our samplings in Spain.     

Establishment and optimization of an evaluation index system for brownfield redevelopment projects: An empirical study

Brownfield redevelopment has recently become the focus of attention of governments, communities, environmental advocates, scientists, and researchers around the world. The purpose of this study is to provide a framework for establishing and optimizing an evaluation index for brownfield redevelopment projects (BRPs). This framework involves three steps: the initial design, testing and optimization, and verification. With the help of two standard statistical software packages, the reliability and validity of the initialized index system are established, and then the optimization of the initial index system is carried out by means of Factor Analysis. The effectiveness of the optimization of the index system is verified through Structural Equation Modeling. Furthermore, an illustration example is used to show how to apply the established index system in the real world.     

浅谈施工索赔的机会形成

施工索赔直接关系到承包商的施工成本与收益，关系到承包商的切身利益，承包商应时刻树立高度的索赔意识，不断提高和积累索赔知识、经验和技巧，善于发现和抓好各种可能的索赔机会，通过成功索赔保证项目效益目标的实现。     

现代大地测量参考系统的定义

说明了现代大地测量参考系统的定义及建立在大地测量系统的基础。给出在目前全球尺度已达到几个cm量级精度的基础上，现代大地测量参考系统确立的4个步骤。     

2005年公寓住宅产品设计趋势

本文从居生区规划形态，景观设计、户型设计，立面风格，配套设施，建设技术等方面对2005年公寓住宅产品设计趋势进行了探讨与展望。     

新版《城市规划编制办法》总体规划阶段的现代技术应对与方法

在城市总体规划编制阶段,现代新技术的方法和应用是落实新版《城市规划编制办法》的重要保证和支持。新《办法》修订的"六个转变"的基本思路,体现了应用现代技术的可行性与紧迫性,而现代技术的应用是实现城乡统筹、区域协调、规划整合、社会和谐的重要手段。     

Yield potential and stand establishment for 20 candidate bioenergy feedstocks

Here we assess 20 bioenergy crop accessions across 10 species, and examine the influence of weed management and annual harvest treatments over three growing seasons in Virginia and one season in Kentucky. Species in this study include: Andropogon gerardii, Arundo donax, Miscanthus × giganteus (sterile triploid and seeded tetraploid), Miscanthus sinensis (ornamental and naturalized), Miscanthus sacchariflorus, Panicum virgatum, Phalaris arundinacea, Saccharum sp., Sorghum bicolor and the unconventional choice of Sorghum halepense. There was a large difference in yield between locations at the end of the planting year, with all accessions producing equivalent or greater biomass in Kentucky. Weed management did not impact yield in the establishment year, as biomass was predictably low. After the third growing season, only A. gerardii and two accessions of naturalized M. sinensis had noticeable reductions in yield due to competition from weeds. After three growing seasons, we obtained the highest yields from M. × giganteus (63, 51 and 39 Mg ha⁻¹ for ‘Illinois’, ‘PowerCane’ and ‘Nagara’ varieties, respectively), naturalized accessions of M. sinensis (54 Mg ha⁻¹), and A. donax (39 Mg ha⁻¹), using traditional cropping practices. Few accessions had low establishment rates limiting overall yields (<10 Mg ha⁻¹); however, when aboveground biomass was calculated on an individual plant basis, yields were comparable to high yielding species, encouraging further examination at higher population densities. Our results indicate that site characteristics such as soil parameters and water availability may be more important for yield than weed competition, especially over time.     

关于企业建立质量反馈系统的探索

质量反馈系统是企业保证产品质量稳步提高的一种有效措施.结合企业实际,通过对质量反馈系统建立的探索,提出了系统建立的基本思路、方法和典型示例.     

编制山地城市控制性详细规划的思考

沿袭平原地区的城市控制性详细规划空间布局模式和技术指标,使山地城市建设难以因地制宜的适应多样化环境的要求,其自身原有的鲜明个性和地方风韵也逐渐淡化和消失.为了寻求山地城市建设发展的规律性与特殊性,避免出现山地城市"平原化"的倾向,作者根据多年在山区工作的经验和体会,对山地城市控制性详细规划的编制内容和技术路线、存在问题...     

基于和利时LK系列PLC的选矿DCS系统搭建

针对选矿工艺对DCS的要求,以某金矿选矿厂自动化系统建设为背景,介绍基于和利时LK系列PLC搭建选矿DCS全过程。对DCS进行功能设计,分析系统集成方式从而选用合适的PLC模块,搭建DCS网络并配置系统。阐述PLC程序设计及实现方法,人机界面的设计与应用。实践证明,该DCS系统运行稳定、操作方便、扩展性强,达到了降低劳动强度、优化选矿工艺指标、提高生产管理效率的目的。