华中地区钢铁企业植物配置探讨

钢铁企业为重污染企业,依据华中地区钢铁企业的立地条件提出了在华中地区钢铁企业环境建设中,植物品种的选择和植物配置的原则,得出在华中地区钢铁企业中植物配置的方法.并通过武汉钢铁(集团)公司和涟源钢铁(集团)公司中多年的实地栽培经验介绍适合华中地区钢铁企业的植物配置.     

Choosing heat sinks for cooling in tropical climates

Efforts to limit CO₂emissions from buildings in the tropics either focus on reducing energy demand, i.e., air-conditioning, or on replacing fossil with renewable sources. The link between energy demand and supply is often overlooked, especially the effect of the temperature lift of air-conditioning systems on energy consumption. But while heat and humidity gains define energy demand, operating temperatures of the system define the necessary energy input. We aim to transfer our experience of using the LowEx paradigm for heat pump systems in moderate climates to the tropical climate of Singapore. In this paper, we took a systematic overview of a range of heat sinks, to which we refer to as anergy sinks. We analysed their thermal properties and their effect on the performance of air-conditioning systems, expressed as COP. The predominantly used dry air-cooled condenser units performed worst, especially when subject to a stack effect in (semi-)confined spaces. The performance is highest for cooling towers using the wet bulb temperature followed by water body based anergy sinks and the soil. The wide spread of results confirms that the heat rejection temperature is a decisive factor for the performance of the overall cooling system and the input of primary energy.     

Transmittance Study of a Tubular Cover Collector

Transmittance of a tubular cover collector has been calculated for a particular orientation. Tilt of the collector is optimised for the four typical days (two equinoxes and two solstices) at Delhi and Madras, a high and low latitude station respectively. Only the two nearest neighbouring tube elements are considered, in order to take into account the shadowing effect. In the present system, where the thickness of the tube and the flat glass sheets, has been taken to be the same, the transmittance of the tubular cover has been found to be comparitively less than that of a cover formed by two parallel sheets of window glass. However, because of its cylindrical geometry, very thin glass tubes can be used for all practical purposes, thereby, increasing the transmittance to a great extent. It has also been concluded that for all tubular covers including this system, hour angle instead of angle of incidence is an exact parameter to study the variation of effective transmittance. The difference in the mode of variation of transmittance with hour angle in the present system, with that in case of tubular collector, is attributed to the variation of average angle of incidence (local) with hour angle.     

Kiln-, Solar-, and Air-Drying Behavior of Lumber of Tectona grandis and Gmelina arborea from Fast-Grown Plantations: Moisture Content,Wood Color,and Drying Defects

Tectona grandis and Gmelina arborea are common in commercial reforestation in the tropics. However, color variations, moisture content, and drying defects are also present in dried lumber. Moisture content variations, drying defects, and color changes were evaluated in the present work for three drying methods (kiln, solar, and air drying) during three seasons (dry, rainy, and transition season) in Costa Rica. According to the results, kiln drying had the fastest drying times, regardless of the season. On the other hand, air drying had slower drying time and higher final moisture content. With regard to defects, kiln drying produced the highest number and magnitude of defects in both species, whereas air drying showed the lowest quantity and severity of defects. No variations due to the drying methods or the season were observed in check and split, though solar drying presented intermediate values in all drying defects. The seasons of the year did not present any effect on drying defects. Finally, T. grandis dried lumber is darker than green lumber, and dried G. arborea wood is clearer. In addition, there is an increase in red ( a ^* ) and yellow ( L ^* ) tonalities, and color changes (Δ E ^* ) are considered perceptible or very perceptible in both species. No differences were found among the three drying methods in Δ E ^* , although the season of the year affected dif L ^* and dif C ^* significantly.     

关于尽早确定梅花、牡丹为我国国花的倡议书

首先对国花下了定义,再确认其本质,并提出评选原则是“约定俗成”。接着简述我国国花历史,和1982年提出“一国一花“（梅花）,1988年提出“一国两花“（梅花、牡丹）及其后评选过程,然后,提出了建议以梅花、牡丹为中国双国花的理由,并附62位院士的签名名单（附专业）。     

论谢灵运《山居赋》植物之美

摘要：谢灵运隐居在始宁庄园著《山居赋》以记载植物之美。他提出“贞观厥美”的观物方法,即以一种中立不倚的方法来观山水之“正”,以体察万物之“真”。他在山居中长期细致地观察植物,极物之形、尽物之性、感物之情,写出植物的美趣、生机。谢灵运将山中植物纳入审美欣趣之中,使其具有一种文人气息：另～方面谢灵运描摹植物的自然清新之美,以此体现植物的自然美,与两汉园林的植物之美有质的区别。     

合肥市旧工业厂房现状的反思与探索

合肥市产业升级带来旧工业厂房的大量拆除和废置,旧工业厂房的现状令人堪忧。旧工业厂房具有很大的价值和可利用空间,废置和拆除不是最佳的解决方式,合肥市旧工业厂房保护与改造再利用势在必行。现阶段,合肥市旧工业厂房改造刚刚开始萌芽。随着国家政策的调整、地方政府的支持、社会各界关注度的日益提高,合肥市旧工业厂房改造必会迎来新的春天。     

浅谈城市快速路绿化植物景观建设--以北京为例

在城镇化发展牵引下,我国城市快速路迅猛发展,城市快速路绿化植物景观越来越引起人们的高度重视。城市快速路绿地(包括主线绿地,互通立交绿地等等),作为城市景观的点与线的重要元素,在改善、恢复环境方面发挥重大作用,但是如何对这些绿地进行有效的规划设计一直是风景园林行业关注的热点。本文是以北京城区互通立交绿地为研究对象,力图探讨较为系统、融生态、视觉美学、地域文化于一体的城市快速路绿化植物景观的设计方法。     

上海市春季彩叶树种类及应用调查

以上海市春季彩叶树种为研究对象,通过观察记录、比较分析,总结出上海地区春季应用的彩叶树种类,旨在为“彩色上海”园林景观设计提出春季彩叶树种应用的可行性建议。介绍了上海市春季彩叶树种类及其应用现状,并对今后上海市彩叶树种的引种、应用及栽培管理提出建议,为彩叶树种的进一步研究提供依据。     

地被植物在传统景点改造中的地位和作用——以杭州曲院风荷公园为例

近年来,杭州加大了对地被植物的研究和应用,在传统景点改造中配置许多新优地被植物,从而大大丰富了景观多样性和植物多样性,提升了景点品位。以曲院风荷公园为例,在对其地被植物种类进行实地调查的基础上,分析和总结了该公园地被植物的应用历史、现有种类及其具体的应用方式,并据此提出了需要进一步探讨的问题。认为今后应大力开发应用乡土地被植物;尽量选用植株低矮的地被植物;在选择地被植物进行配置时坚持适地适种的原则;园林应用中应尽量选择自然高度在30～80cm左右的地被植物。