نتایج جستجو برای: recycling materials

تعداد نتایج: 462427  

2015
Chaofeng Liang Tiejun Liu Jianzhuang Xiao Dujian Zou Qiuwei Yang

Damping characterizes the energy dissipation capacity of materials and structures, and it is affected by several external factors such as vibrating frequency, stress history, temperature, and stress amplitude. This study investigates the relationship between the damping and the stress amplitude of environment-friendly recycled aggregate concrete (RAC). First, a function model of a member's loss...

2017
Derek R Lovley

The growing ubiquity of electronic devices is increasingly consuming substantial energy and rare resources for materials fabrication, as well as creating expansive volumes of toxic waste. This is not sustainable. Electronic biological materials (e-biologics) that are produced with microbes, or designed with microbial components as the guide for synthesis, are a potential green solution. Some e-...

Journal: :The American naturalist 2014
Isabelle Gounand Nicolas Mouquet Elsa Canard Frédéric Guichard Céline Hauzy Dominique Gravel

The paradox of enrichment has been studied almost exclusively within communities or metacommunities, without explicit nutrient dynamics. Yet local recycling of materials from enriched ecosystems may affect the stability of connected ecosystems. Here we study the effect of nutrient, detritus, producer, and consumer spatial flows-combined with changes in regional enrichment-on the stability of a ...

Journal: :Environmental science & technology 2007
Elisa Alonso Jeremy Gregory Frank Field Randolph Kirchain

Many authors suggest that market forces are inadequate to successfully manage the problems of resource availability and use. The fundamental question is whether these inadequacies are intrinsic to the market or if they arise from a failure of firms to detect and respond to subtle market signals. This paper explores the latter by describing (1) mechanisms that can limit materials availability, (...

2015
Dominik Wiedenhofer Julia K. Steinberger Nina Eisenmenger Willi Haas

Material stocks are an important part of the social metabolism. Owing to long service lifetimes of stocks, they not only shape resource flows during construction, but also during use, maintenance, and at the end of their useful lifetime. This makes them an important topic for sustainable development. In this work, a model of stocks and flows for nonmetallic minerals in residential buildings, ro...

Journal: :Waste management 2015
Susana Xará Manuel Fonseca Almeida Carlos Costa

The potential environmental impact of Landfilling, Incineration and Recycling of spent household alkaline batteries collected in continental Portugal was compared using LCA methodology and the Recipe Impact Assessment method. Major contributors and improvement opportunities for each system were identified and scenarios for 2012 and 2016 legislation targets were evaluated. For 13 out of the 18 i...

Solid waste is an integral part of human life, generation of various quantities and qualities of which is one of the greatest environmental problems of the current era. Application of modern tools and technology to find the right place for recycling, where the volume of recyclable materials can be reduced, seems vital for reusing the recoverable materials contained in normal waste and their rec...

2003
Thomas Spengler

Due to the latest developments in European environmental legislation, producers will be responsible for collecting, sorting and recycling of discarded products at the end of their service life. They will be charged by the total recycling costs which leads to higher lifecycle costs of their products. Therefore, a close cooperation with recycling companies and their integration in producers suppl...

2007
Kee Mo Jeong Seok Jin Hong Ji Yong Lee Tak Hur

This study aims at evaluating the environmental impacts stemmed from End-of-Life Vehicle (ELV) treatment system in Korea, using Life Cycle Assessment (LCA) method. In the process of the assessment, not only the environmental burdens originated from ELV dismantling processes and recycling processes but also the environment benefits obtained from the avoided effects of recycled materials on the e...

ژورنال: سلامت و محیط زیست 2020

Background and Objective:  one of the major challenges in urban management in human societies is related to the collection, recycling and disposal of solid waste and sewage. Poor waste management causes pollution of water, soil and air. It will have a major impact on public health. The aim of present study was to investigate the current status and select the best options of management of munici...

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