835,183 research outputs found

    Corrugated bamboo roofing sheets (1)

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    What are corrugated bamboo roofing sheets? Corrugated bamboo roofing sheets (CBRS) are an excellent alternative to corrugated asbestos, iron, plastic or zinc roofing sheets. They are produced from natural materials and are attractive, durable and resilient to adverse weather conditions and pest attack. They can be produced in a range of standard sizes and can be used to roof dwellings, stores, animal pens and other buildings. How are they produced? CBRS are produced by pressing firmly together woven bamboo mats that have been impregnated with an adhesive resin. The corrugations are formed by pressing them between corrugated pressing plates in the pressing machine. What is the market for corrugated bamboo roofing sheets? The market for CBRS is somewhat variable in different regions of the world but depends to a large extent on successful marketing strategies. CBRS is popular in rural areas where the low prices are attractive. The potential to increase the use of CBRS in more affluent areas is enormous, and there is considerable export potential in the markets of the more affluent countries where their eco-friendly nature could be a major selling point. What is the role of a corrugated bamboo roofing sheets unit in rural development? The unit itself will provide employment to a range of people and there will be extra employment generation in its forward and backward linkages, such as cultivation and harvesting of bamboos, primary processing, mat weaving, marketing and retailing. A unit producing 500, 000 m2 of sheets per year will require a total workforce of over 200 people. The need for a sustainable supply of raw materials will encourage the proper management of bamboo stands, and the establishment of new plantations, with their associated environmental benefits. How do I establish a corrugated bamboo roofing sheets-making enterprise? A corrugated bamboo roofing sheets manufacturing unit requires a regular supply of bamboo mats, electricity, labour and access to markets. An enterprise with a capacity of 500, 000 m2 per year can be established for approximately USD $26, 000 in Vietnam but costs will vary in other countries.Corrugated bamboo roofing sheet

    Corrugated bamboo roofing sheets (2)

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    Corrugated bamboo roofing sheets are plywood-like roofing materials made from layers of woven bamboo mats that have been coated with glue and then pressed firmly together. The corrugations are formed by pressing the mats between corrugated pressing plates. Corrugated bamboo roofing sheets are an excellent alternative to asbestos, iron, zinc or plastic roofing sheets. They are attractive, durable and highly resistant to adverse weather conditions and pest attacks. Corrugated bamboo roofing sheets can be produced in a variety of sizes and used to roof a wide range of buildings.Corrugated bamboo roofing sheet

    Ecology and environment

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    In introduction I want mention a briefly about ecology, then I will mention some problems and solution. Ecology is the study of the ways in which organisms (plants and animals) depend upon each other and upon their surroundings. Each organism requires conditions in order to be able to live and breed. These conditions are its environment by changing the ecological conditions. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3157

    Acoustics of weirs: Potential implications for micro-hydropower noise.

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    There is great potential for the expansion of the small or micro scale hydropower network. Of the 43 thousand weirs in the UK there are only 500 consented hydro schemes. Planning applications for such schemes require a noise assessment. Noise evaluation of a proposed renewable scheme is often complicated by the turbine sites having distinct noise characteristics in the first instance, which are often caused by the weirs themselves. Three types of weir were studied: Broad Crest weirs were studied in detail; this is complimented by further studies in Flat V and Crump weirs. Flow data was collected for ten sites from the Environment Agency and the National Rivers Flow Archive to assess the collected Sound Pressure Level (SPL) and calculated Sound poWer Level (SWL) in relation to various river flows. Weir head height, width and meteorological data were also collected. It has been shown that the SPL data collection method used was the right choice, as the greatest amplitudes at the water impact interface at all weir types was recorded. SPL and SWL were found to be within a 36e82 dBz and 45e86 dBz range respectively for all weir types. These values can be used in computer simulations of sound propagation. The mean SPL and SWL difference between the weir types are 6.1 dBz and 6.3 dBz. Head height has the greatest effect on SPLs. Attenuation with distance was found to be similar to that of a free field line source in general

    Symposium on Llangrose Lake: the ecology and conservation of a large nutrient-rich lake in South Wales

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    This paper summarises a meeting which discussed the ecology and conservation of Llangorse Lake in South Wales. The meeting was organised by the British Ecological Society (Aquatic Ecology Group), in association with the Countryside Council for Wales (CCW), Brecon Beacon National Park Authority (BBNPA) and Environment Agency Wales. It took place on 22 October 1998

    Ecology, Environment and Sustainable Development in Indian Fiscal Federalism

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    This paper argues that the incorporation of new references in the Thirteenth Finance Commission mandate relating to ecology, environment and climate change and quality of public expenditure pose new challenges. The challenges arise because the operationalization of these items require various reforms-legal, administrative, costing, valuation, institutional, and monitoring which require political will as well as reorientation in public expenditure management techniques. In this regard, there is a need for the Commission to look at the issues in a holistic manner, integrate environment considerations in public policy making and initiate ecological fiscal reforms, thereby achieving the sustainable development. The paper also suggests that for sustainable management of shared environmental resources like river basin, forest etc. the regional governance structures need to be established. The Commission should provide financial incentives for regional cooperation. This paper also reviews the UNs environmental policy and Indias pollution prevention and control policy and discusses various ecotaxes on polluting inputs and outputs and provides rationale for such taxes.Environment, sustainable development, Federalism

    Physical environment, nutrient budget, and ecology of Lake Moana-nui, Tokoroa

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    This report is based on fortnightly monitoring data collected over a 14 month period from November 2000 to January 2002 and a survey of the lake bathymetry and vegetation distribution. The project also included a detailed investigation into the associations between macroinvertebrates and the native and exotic plants in the lake, and experiments evaluating the effects of the large populations of the water flea Simocephalus vetulus that the lake maintains on algal concentrations and therefore water clarity. The aim of this report is to present and discuss the results of the monitoring, surveys, and experiments in order to make recommendations for the future management and health of Lake Moana-nui

    On the difference between exclosures and enclosures in ecology and the environment

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    Rehabilitation of degraded land in arid and semiarid environments often involves excluding livestock from degraded sites, creating what are usually but unfortunately not consistently, called _exclosures_. Their main objective is to allow native vegetation to regenerate as a means of providing fodder and woody biomass, to reduce soil erosion and to increase rain water infiltration. We are concerned that some of the alternative names for this practice that are reported in the international literature, including _closed area_, _area closure_ and _enclosure_, may lead to confusion and misunderstanding, especially when these are used as synonyms. Here we aim to illustrate the difference between exclosures and enclosures using recent ecological and environmental literature and provide guidance for their proper use

    Ecology and Environment: They\u27ve Been Integrated into J-Education Thinking

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    The article focuses on the impact of ecology and the environment on journalism education. Environmental concerns have measurably affected curricula, internships, public service programs and professional liaisons in journalism education. Environmentally-related breadth courses are required or primarily, optional in 28 percent of the programs, with about 68 percent of those programs requiring or recommending traditional, natural science-oriented environmental courses, and 45 percent including those with social science orientation, perhaps reflecting the social overtones of environmental problems made salient by the environmental era

    The ecology of the intestinal flora in a changing environment Final report

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    Resume of publications and recommendations from symposium on intestinal flora ecology in changing environment
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