国外立体绿化景观现状分析

对立体绿化概念及其在现代景观设计中的作用进行简要表述;根据立体绿化的几种形式,对国外的优秀立体绿化案例进行分析。     

Zoonotic enteric protozoa

A growing number of enteric protozoan species are considered to have zoonotic potential. Their clinical impact varies and in many cases is poorly defined. Similarly, the epidemiology of infections, particularly the role of non-human hosts, requires further study. In this review, new information on the life cycles and transmission of Giardia, Cryptosporidium, Entamoeba, Blastocystis and Balantidium are examined in the context of zoonotic potential, as well as polyparasitism and clinical significance.     

化肥深施对作物产量的影响

本文介绍了化肥深施、增产降耗的原理。通过对比实验,证明化肥深施可有效地减少挥发损失和冲洗损失,提高作物产量。科学施肥具有深远的生态意义。     

菊苣族植物的花粉形态

本文对我国15属,28种菊苣族(Cichorieae)植物的花粉进行了研究。根据花粉萌发孔的数目,极面特征及纹饰特点,菊苣族植物花粉可分为6类:(1)4孔沟花粉类型,(2)具发达极板3孔沟花粉类型;(3)具小极板3孔沟花粉类型;(4)多小穴3孔沟花粉类型;(5)具条纹3孔沟花粉类型;(6)具3苣极面网胞3孔沟花粉类型。据各属种主要花粉特征,作出了花粉形态分属种检索表。本文还对菊苣族植物花粉形态的多样性、萌发孔的演化趋向,以及花粉类型和纹饰在分类中的意义进行了讨论。     

简述文献资源共享的前提之一--文献合作采购

图书馆资源共享，一直以来被受图书馆界关注。各馆从采购、流通、互借等诸多方面进行了研究．并逐步实施。本文围绕着图书馆文献合作采购进行了探讨，从文献采购的意义、国内外的发展状况及文献合作采购中需关注的问题加以阐述、说明。作好这项工作是文献资源共享的形式之一。     

菠萝植株性状相关的通径分析

根据161株菲律宾品种菠萝植株的果实重量、果眼数、叶片数、叶片重和茎重等5个性状的观测数据,进行通径分析,获得关于这些性状的特征数、通径图、通径系数、决定系数;并对通径系数进行显著性检验,建立“最优”回归方程:y=242.292 2.5084x_1 8.3126x_2 0.3663x_3。它的复相关系数为R=0.9275。结果期的菠萝植株所具有的叶片重是影响果实重量的最重要性状。由于性状间均存在着显著的正相关,其他性状(x_1,x_2,x_4)对菠萝果实重量的间接影响也很大,必须同时兼顾。     

苏锡常地区城市公园土壤微量元素分布特征及其环境指示意义

在江苏省国土1/250 000多目标地球化学调查基础上,选择苏州市、吴江市、无锡市、江阴市、常州市、金坛市等45个城市公园土壤作为研究对象,系统研究了当地典型城市公园土壤中Cd、Hg、Pb、Zn、Sb、Sn、B、Se、N、稀土元素(REE)等50个元素含量及土壤pH、总有机碳(TOC)等分布特征。结果表明,城市公园土壤的微量元素分布与城区污染土壤、农田土壤有显著差异,公园土壤的重金属含量总体偏低、N与TOC含量明显低于农田土壤,在公园土壤中S、Se、Cd、Pb、Zn、TOC等元素未出现高强度的人为富集,重金属污染以轻度Hg污染为主,S、Se、Cd、Pb、TOC、pH等指标在200 cm深度内分布相对稳定、未出现元素含量在不同深度的显著变化,指示多数公园土壤的微量元素分布总体上较一般城市土壤更少受人为因素干扰,可为人为活动对城市土壤环境的影响研究提供重要的参比对象。     

Ecological and economical significance of homestead forest to the household of the offshore island in Bangladesh

An explanatory survey was conducted to assess the contribution of plant diversity to the ecological and socio-economic condition of the rural household in the offshore island of Bangladesh.Assessment was done by means of multistage random sampling.The homestead sizes of the study area were classified into 3 groups viz,large (>0.25 ha),medium (0.05-0.25 ha) and small (<0.05 ha) based on the result obtained from a preliminary survey,and a total of 45 homesteads,15 from each group,were selected randomly for the study.The average annual income from homestead's plant diversity varied from Tk 5730.00 (US$95.5) to Tk 17500.00 (US$291.67).The rural people were mainly dependent on their homegarden for woodfuel and nutritional requirement as forest was unavailable in the island.The rural people here also cultivated the plant species as a safety measure from frequent cyclone.Constraints hindering the development of homestead plantation were identified and suggestions were given such as the adequate supply of seedlings of fast growing native species and conservation of endangered species to meet the demand of the household as well as to keep ecological balance.     

浅谈国有建筑施工企业经营管理体制创新的重要性

经营管理是企业永恒的主题。企业核心竞争力的提高有待于经营管理机制的创新,企业通过经营管理创新,形成新的动力源,以激发全员的积极性和创造性,为国有建筑施工企业的持续、健康、快速发展提供有力的保障。     

Whole wheat bread: Effect of bran fractions on dough and end-product quality

Consumption of whole-wheat based products is encouraged due to their important nutritional elements that benefit human health. However, the use of whole-wheat flour is limited because of the poor processing and end-product quality. Bran was postulated as the major problem in whole wheat breadmaking. In this study, four major bran components including lipids, extractable phenolics (EP), hydrolysable phenolics (HP), and fiber were evaluated for their specific functionality in flour, dough and bread baking. The experiment was done by reconstitution approach using the 2⁴ factorial experimental layout. Fiber was identified as a main component to have highly significant (P < 0.05) and negative influence on most breadmaking characteristics. Although HP had positive effect on farinograph stability, it was identified as another main factor that negatively impacted the oven spring and bread loaf volume. Bran oil and EP seemed to be detrimental to most breadmaking characteristics. Overall, statistical analysis indicates that influence of the four bran components are highly complex. The bran components demonstrate multi-way interactions in regards to their influence on dough and bread-making characteristics. Particularly, Fiber appeared to have a high degree of interaction with other bran components and notably influenced the functionality of those components in whole wheat bread-making.