Conference news

Exhaust gases from automobiles contribute significantly to atmospheric pollution. This paper provides information on the effect of automobile emission on a few wild dicotyledonous plants growing along roads with much traffic. There is a close connection between the distance of the plants from the road and diminution in soluble protein and chlorophyll a contents, and these two physiological traits may serve as indicators of pollution level.     

Conference news

RESOURCES: ENVIRONMENT AND POLICY, by John Fernie and Alan Pitkethly, Harper and Row, London, 1985, 338 pp. (#bp12.95, paperback)

THE ECONOMICS OF FORESTRY AND NATURAL RESOURCES, by Per‐Olov Johansson and Karl‐Gustaf Lofgren, Basil Blackwell, Oxford, 1985, 292 pp. (#bp29.50, hardback only)

ENVIRONMENTAL PROTECTION: STANDARDS, COMPLIANCE AND COSTS, edited by T. J. Lack, J. Wiley &; Son, Chichester, 1984, 329 pp. (#bp30, hardback)

ENVIRONMENT AND ENFORCEMENT: REGULATION AND THE SOCIAL DEFINITION OF POLLUTION, by K. Hawkins, Clarendon Press, Oxford, 1984, 253 pp. (#bp15 hardback; #bp6.95, paperback)

ENVIRONMENTAL POLICY, VOLUME 1: ELEMENTS OF ENVIRONMENTAL ANALYSIS, by George Tolley, Philip Graves and Glenn Blomquist, Ballinger, Cambridge, Mass, and Harper and Row, London, 1981. (#bp27.50, hardback)

ENVIRONMENTAL POLICY, VOLUME 4: SOLID WASTES, by George Tolley, Jospeh Havlicek and Robert Fabian, Ballinger, Cambridge, Mass. and Harper and Row, London, 1985. (#bp44.00, hardback)

World Health Organisation, ENVIRONMENTAL POLLUTION CONTROL IN RELATION TO DEVELOPMENT, World Health Organisation, Geneva, Technical Report Series, 718, 1985, 63 pp.

TRANSPORT IS FOR PEOPLE: NINTH INTERNATIONAL SYMPOSIUM ON THEORY AND PRACTICE IN TRANSPORT ECONOMICS, European Conference of Ministers of Transport, 1983, Paris (#bp15.00)

RECREATION MANAGEMENT AND PRICING, by A. G. Bovaird, M. J. Tricker and R. Stoakes, Gower Press, Aldershot, 1984, 182 pp. (#bp15, hardback)

URBAN LAND AND SHELTER FOR THE POOR, by Patrick McAuslan, Earthscan#shInternational Institute for Environment and Development, London, 1985, 145 pp.

CARING FOR THE UNEMPLOYED. Prepared for the Association of Metro‐polital Authorities by Susan Balloch, Chris Hume, Brian Jones and Peter Westland. Publishers: Bedford Square Press, London, 1985, for the National Council for Voluntary Organisations.

THE LONG‐TERM UNEMPLOYED. ACTION FOR A FORGOTTEN MILLION, by Peter Ashby (Head, NVCO Policy Analysis Unit). An NCVO Policy Discussion document, Bedford Square Press, London (1985).

ANTHROPOGENIC COMPOUNDS: Volume 3 Part C of The Handbook of Environmental Chemistry, edited by O. Hutzinger, Springer‐Verlag, Germany, 248 pp. 1986. (DM 188.00)

HEAVY METALS IN NATURAL WATERS: APPLIED MONITORING AND IMPACT ASSESSMENT, by James W. Moore and S. Ramamoorthy, Springer‐Verlag, U.S.A. and Germany, viii #pl 268 pages, index, 1984. (DM 108.00)

DESTRUCTION AND DISPOSAL OF PCBs BY THERMAL AND NON‐THERMAL METHODS, by D. G. Ackerman, L. L. Scinto, P. S. Bakshi, R. G. Delumyea, R. J. Johnson, G. Richard, A. M. Takata and E. M. Sworzyn. Noyes Data Corporation, Park Ridge, New Jersey, 1983, xiv #pl 417 pages (no index). (#dl48.00)

ELECTROSTATIC PRECIPITATOR MANUAL (Pollution Technology Review No. 91), by Jack R. McDonald and Alan H. Dean, Noyes Data Corporation, U.S.A., 1982. (#dl48.00)

PATTY'S INDUSTRIAL HYGIENE AND TOXICOLOGY, edited by Lewis J. Cralley and Lester V. Cralley, Volume 3 (2nd Edition)—Theory and Rationale of Industrial Hygiene Practice: (i) Volume 3A—The Work Environment (#bp97.20); (ii) Volume 3B—Biological Responses (#bp92.00) J. Wiley and Sons Ltd., Chichester U.K. 1985.

SAFE DRINKING WATER. THE IMPACT OF CHEMICALS ON A LIMITED RESOURCE, edited by R. G. Rice, J. Wiley and Sons, Chichester, U.K., Lewis Publishers Inc. Chelsea MI, 1985. (#bp36.00)

PLANTS FOR ARID LANDS. (Proceedings of the Kew International Conference on Economic Plants for Arid Lands held in the Jodrell Laboratory, Royal Botanic Gardens, Kew, England, 23‐27 July 1984), edited by G. E. Wickens, J. R. Goodwin and D. V. Field. George Allen and Unwin, London, 1985. (#bp30.00)

REGULATED RIVERS, edited by A. Lillehammer and S. J. Saltveit, Univer‐sitetsforlaget AS, Oslo, 1984. (#bp47.50)

NUTRIENT CYCLING IN TROPICAL FOREST ECOSYSTEMS, by C. F. Jordan, Wiley, Chichester, 1985. (#bp13.45)     

Conference news

Fungal metabolism can be divided into two broad areas. Primary metabolism provides the organism with energy, synthetic intermediates, and key macromolecules. Secondary metabolism yields a range of species‐specific compounds which are of no obvious utility to the producing organism. The mycotoxins are fungal secondary metabolites which are toxic to mammals and which are produced on animal and human foodstuffs. It is best to see the structural relationships and biosynthesis of mycotoxins in relation to fungal metabolism in general. The paper discusses the relationship of primary and secondary metabolism, and the relative importance of the various bio‐synthetic processes in the fungi. Mycotoxins illustrate these processes.     

Conference news

The results and deductions are given from a Survey of 100 Battered Wives, seen at a Womens’ Aid Crisis Refuge and in psychiatric practice. The patterns and life history and the psycho‐social implications are discussed and deductions drawn. The pattern of how violence breeds and nurtures violence is shown, but results also postulate that it is possible for women to be drawn into a violent marital relationship, either by deprivation or by misdirected well‐meaning intent. Many of the relationships were of a precipitous type with the traditional values of courtship and engagement being replaced by pre‐marital sexual intercourse with consequent pregnancy.     

浅谈自压节水灌溉系统在农业灌溉上的应用

我们国家是贫水国之一,这在世界上是所被公认的。但是我国却也是一个农业大国,并且农业灌溉的技术并不高,这造成了大量水资源的浪费。国内许多地区由于对灌溉技术的缺乏、水资源的短缺,因此造成粮食的减产。     

城市地下空间开发利用的问题与对策浅议--以武汉为例

当前,我国地下空间开发利用存在法规体系不健全、管理体制不明确、审批制度不完善等问题,无法适应城市的发展需求,研究应重点从这三方面入手。本文对武汉市地下空间的开发利用进行了分析,提出了相关规划建议和实施措施。     

喷灌与滴灌相结合的灌溉模式设计探析

对管道灌溉、滴灌、喷灌等灌溉方式进行了介绍,着重探讨了灌溉模式的选择方法及要点,指出对于开荒地,选择喷灌和滴灌相结合的方式,既减少了出地管的数量,又方便耕作,具有较好的经济效益。     

对当前城市消防规划编制工作的研究

以当前城市消防规划编制工作的开展现状为切入点,着重阐述了当前城市消防规划编制中存在的问题,并结合实际工作经验,提出了相应的解决措施,以消除消防安全隐患,保证社会公众群体的生命财产安全。     

城市地下空间开发利用的问题与对策浅议--以武汉为例

当前,我国地下空间开发利用存在法规体系不健全、管理体制不明确、审批制度不完善等问题,无法适应城市的发展需求,研究应重点从这三方面入手。本文对武汉市地下空间的开发利用进行了分析,提出了相关规划建议和实施措施。     

城景互融——银川传统区域风景系统

古代银川具有城郊一体的区域风景系统.通过文献考证与空间复原,解析银川传统区域风景系统的构成与特征.以山水格局与灌溉水网为基底,历西夏、明、清的经营,银川形成了包含山水风景、灌区风景及城内风景3个层次在内的区域风景系统.远郊集宫、陵、寺、塔、渡为一体,近郊汇聚了湖塘、园林、桥梁和渠庙之景,城内侧重防御、楼塔与园林的营建;...     

Conference reports

The aim of the study was to observe the effect of Cd on the activity of chymotrypsin (ACHT) and trypsin (AT) in droppings of Japanese quails. The birds (24) were divided into four groups of six subjects each. The animals in group 1 received 0.12 mg Cd/d in drinking water, whereas those in group 2 were given 4 mg Zn/d. The quails in group 3 were supplied a combination of 0.12 mg Cd/day and 4 mg Zn/d. The quails in group 4 were not given any supplements, acting as controls. ACHT and AT were determined after 35 and 58d of supplementation. The addition of Cd in drinking water resulted in inhibition of ACHT and AT (p < 0.001) in group G1 in comparison to the control. Zinc showed a positive effect (p < 0.001) on the increase of ACHT and AT in groups 2 and 3. The significantly higher (p < 0.001) ACHT and AT were observed in group G3 with addition of Cd and Zn than in group G1 with addition of Cd. Our results indicated that long‐term supplementation of Zn can have a positive effect on ACHT and AT in droppings of Japanese quails.     

人居视角下我国传统灌区研究

传统灌区形成了中国以农业为基础的国土空间基本 景观结构。灌区整体风貌与空间肌理表达了地形地貌、河流水 系、植被等自然环境特征,以及叠加于之上的水利系统、农业 体系和聚落系统等文化特色,由此形成不断演变和适应的国土 人文自然系统。将灌区视为水文驱动下的人居环境单元,首先 简述我国灌区分布和发展,确定灌区的基本类型和各自特征, 并剖析不同尺度的灌区的水文和空间结构,在此基础上分析灌 区根据分水体制而形成的社会人文结构,最后论述灌区在风景 审美和营建方面的潜在影响,以期为理解我国传统国土空间提 供一种新的视角。     

某办公楼的多功能会议系统设计

多功能会议系统向多元集成化方向发展,逐步融会了各种最新的技术,如:图像显示技术、数字会议技术、计算机技术、远程音像传输技术等,以最大限度的增加会议的信息容量,提高会议的效率。     

广州白云国际会议中心智能化电子会议系统的设计

本文以广州白云国际会议中心为例，针对超大型会议中心的电子会议系统的设计特点，提出了一些创新的设计思想与亮点。     

农田水利灌溉管理存在的问题及对策

本文分析了农田水利灌溉的基本要求,加强农田水利灌溉管理的意义,进而分析了农田水利灌溉管理存在的问题。为了改善农田水利灌溉工程,构建科学合理的管理模式是有必要的,要健全农田水利灌溉管理制度,加大灌溉工程管理资金投入,使农田水利灌溉得到很好的利用。     

喷滴灌工程管网的水力计算

对喷滴灌工程设计中的水力计算部分,论述了两种灌溉方式水力计算的基本步骤,提出在实际计算中需要注意的若干问题,供设计时参考。     

Estimating industry-level productivity trends in the building industry from building cost and price data

A method of measuring total-factor productivity (TFP) trends in the building industry is described in this paper. This method is an improved version of the approach described in a paper by Chau and Walker in that it requires less restrictive assumptions and is theoretically less biased while requiring only slightly more data. With small modification, the same method can be used to measure other productivity trends corresponding to other productivity concepts. The data used in measuring TFP of Hong Kong's building industry are also different from those proposed in Chau and Walker. A number of modifications have been made. These modifications have been possible both as a result of work by Chau and the increased availability of statistics in recent years.

One of the major difficulties in measuring TFP trends in the building or construction industry has been the lack of data. This is also one of the major reasons for the dearth of empirical studies in this area. Very few attempts have been made to solve the problem of data availability. Lowe recognizes the dificulties in obtaining suitable data for measuring TFP of the British construction industry. His suggestion, however, is to use capital productivity as the second-best alternative to TFP rather than solving the problem. Chau and Walker's solution is to develop a method for estimating TFP from construction cost and price data. The method is then used to measure the TFP of Hong Kong's building industry. Since construction cost and price data are usually more readily available in most countries, Chau and Walker's approach is potentially useful in these countries. There are, however, certain deficiencies in Chau and Walker's approach in that some of the underlying assumptions are relatively restrictive.

As more statistics are now available in Hong Kong, this has rendered Chau and Walker's approach a crude tool for making full use of the data. This paper presents a modified approach which requires less restrictive assumptions and can make better use of the newly available data.