Compositional changes in the hydrophobic acids fraction of drainage water from different land management practices

Dissolved organic matter (DOM) can play a key role in many environmental processes, including carbon cycling, nutrient transport and the fates of contaminants and of agrochemicals. Hydrophobic acids (Ho), the major components of the DOM, were recovered from the drainage waters from well-drained (WDS) and poorly-drained (PDS) Irish grassland soils in lysimeters, amended with N fertiliser (F) and with bovine urine (U) and were studied using 1D and 2D solution-state Nuclear Magnetic Resonance (NMR) spectroscopy. The Diffusion Edited (DE) ¹H NMR spectra indicated that the Ho consisted largely of larger molecules, or of molecules that formed rigid aggregates, and the 1D and the 2D (Heteronuclear Multiple Quantum Coherence - HMQC, the Total Correlation Spectroscopy - TOCSY, and the Nuclear Overhauser Effect - NOESY) spectra indicated that the samples were composed of lignin residues, carbohydrates, protein/peptides, and aliphatic components derived from plant waxes/cuticular materials and from microbial lipids. The F amendments increased the concentrations of Ho in the waters by 1.5 and 2.5 times those in the controls in the cases of WDS and PDS, respectively. The lignin-derived components were increased by 50% and 300% in the cases of the Ho from the WDS and PDS, respectively. Applications of F + U decreased the losses of Ho, (compared to the F amendments alone) and very significantly decreased those of the lignin-derived materials, indicating that enhanced microbial activity from U gave rise to enhanced metabolism of the Ho components, and especially of lignin. In contrast the less biodegradable aliphatic components containing cuticular materials increased as the result of applications of F + U. This study helps our understanding of how management practices influence the movement of C between terrestrial and aquatic environments.     

比较北欧、日本工业设计构建中国现代设计美学

通过对北欧、日本两大优秀设计文化的观察、比较,以及对中国自然资源环境和传统美学的观察,得出在全球化浪潮中构建中国现代意义的本土设计美学的价值和意义.并且这种建设活动应该在尊重我国自然环境、尊重民族传统美学观念;同时将本土传统和西方现代文化二者放在平等的立场上;进行从审美内核开始、而非从形式到形式的、"对冲互补"以求和谐的中国的、现代意义的设计美学构建.     

京津冀北地区建立常规型生态补偿机制的探讨

京津冀北地区同处于海河北系一个大的流域系统,冀北地区为京津二市及下游地区无偿提供着生态服务,造成上下游之间发展机会不均等,不利于生态文明建设和社会经济的可持续发展,在京津冀北地区建立常规型生态补偿机制非常之必要。     

Local government and state control: Municipalising the Northern Territory land councils

If implemented, the recommendations of a recent review of the Aboriginal Land Rights (Northern Territory) Act 1976 would see relatively strong provisions for Aboriginal people to obtain and manage their traditional lands abolished. A centrally regulated and assimilationist system of local governance would be substituted. The neo-colonial implications of the proposals are masked by liberal rhetoric of community and local democracy.     

Technical information

The centre of glass thermal performance of evacuated glazing is better than the performance of argon‐filled atmospheric pressure double glazings. Mitigation, or elimination of evacuated glazing edge effects will bring total window thermal performance on par, or better than, competing ‘superwindow’ options; thus increasing the commercial attractiveness of these glazings. The results of the computer‐based thermal modelling at the Universities of Sydney and Ulster compare well with each other and with the infrared thermography measurements at Lawrence Berkeley.     

东魏北齐贪污现象的普遍性及其原因探析

翻阅《北齐书》，“聚敛”、“受纳”等有关贪污受贿的字眼俯拾皆是，由此感觉北齐一朝的贪污现象很严重。仔细分析原因，除了个人因素，比如人性的贪婪；勋贵政治、统治者的政策失误与奢侈生活才是北齐贪污现象普遍的主要原因     

武山铜矿北副井延深工程施工实践

本文简述了武山铜矿北副井延深工程的施工方案、施工技术与管理、施工后的效果及其施工经验总结     

Devolving Housing Policy and Practice in Northern Ireland 1998-2002

This paper reviews the effect of devolution on housing policy and practice in Northern Ireland. It outlines the history and context of devolution and housing policy in Northern Ireland, including the legacy and persistence of intense social conflict. Current devolution arrangements are reviewed, including the implications of enforced coalition for policy governance. The paper focuses on three dimensions of housing and housing-related policy development and implementation: social housing, especially the distinctive history and changing organisation of social housing provision; policies affecting the housing market, including the changing regime for spatial planning; and, regeneration and tenant participation. The paper argues that housing policy has tended to converge with policies in England, rather than moving towards a distinctively local agenda. Local political agendas remain dominated by disagreements over constitutional status thus policy formulation is determined more by officials than by elected politicians.     

一个新的金矿成矿系列：论粤北新洲褶皱式逆冲推覆构造与金矿化的关系

粤北新洲地区存在一个中—大型的褶皱式逆冲推覆构造。逆冲推覆早期矿化主要发生在Ⅰ级推覆断层带中,形成石英—碳酸盐糜棱岩型金矿床。中期矿化发生在Ⅱ级逆冲推覆断层带及下盘高角度推覆剪切带中,形成一种新类型金矿床—碎裂钠长石岩型金矿床。晚期矿化发生在Ⅲ—Ⅳ级逆冲推覆断层带中,形成碎裂富硫化物石英脉型金矿床。从矿化早期至晚期,变形环境从韧性→脆性,成矿深度和差异应力逐渐变小,形成一个完整的矿化系列。     

Oil／Gas Accumulation Characteristics and Exploration Methods of the Deltaic Lithologic Reservoirs in Northern Shaanxi Area

鄂尔多斯盆地陕北地区中生界三叠系延长组发育大型三角洲体系,形成了两套有利的生储盖组合,并发育多套油层。勘探实践证明:油藏的形成和分布受延长组生油凹陷的控制,三角洲储集砂体是形成大型油田的物质基础,次生浊沸石溶解在低渗透背景上形成相对高渗区,储油砂体上倾岩性变化构成隐蔽性岩性圈闭遮挡条件,形成的三角洲油藏具有规模大、工业产层多、油气资源丰富的特点。通过对鄂尔多斯盆地陕北地区石油成藏地质条件进行分析,总结出岩性油藏的成藏特征及勘探方法,深化和丰富了岩性油藏勘探理论,推动了陕北地区三角洲油藏的勘探步伐。