Challenges facing components reuse in industrialized housing: A literature review

Concerns over the earth’s ability to sustain itself over the long term as a consequence of human consumption of natural resources points towards sustainable development. Since a large proportion of human consumption is linked to buildings and construction, this means managing the construction process in more sustainable ways. Strategies that target greater material efficiency and which promote circular economy concepts are among several approaches that are gaining in popularity. The adoption of life-cycle thinking and practices in design, construction and end of life through the reuse of construction components and materials is one such action to achieve a sustainable built environment. Reuse is not a new concept and technical solutions do exist; however, practical realization is hampered by many interrelated challenges. This review paper is the result of a literature review for an exploratory study that aims to identify obstacles to the reuse of building components and materials. The context is industrialized housing, particularly timber-based construction, as this is a sector where modern manufacturing and onsite practices have become established. The main obstacles identified and corroborated in the literature, along with their potential solutions, are summarized and conclusions drawn on the future direction of research needs.

Future low-carbon electricity in Africa: how much material is needed?

African countries are expected to experience some of the worst climate effects, while trying to provide higher electricity access and increase wellbeing.Concrete, steel, and aluminium pre­sent the largest opportunities for action, given their high mass or embodied emissions projections.Embodied emissions related to material use for electricity plants are evaluated in three scenarios: a refer­ence scenario, and two scenarios related to the Paris Agreement (where renewable energy increases), resulting in higher embodied emissions as renewables are integrated.Pursuing strategies to increase the use of renewables should be done along material efficiency strategies to reach the total low-carbon potential.

Recyclability and Redesign Challenges in Multilayer Flexible Food Packaging—A Review

Multilayer flexible food packaging is under pressure to redesign for recyclability. Most multilayer films are not sorted and recycled with the currently available infrastructure, which is based on mechanical recycling in most countries. Up to now, multilayer flexible food packaging was highly customizable. Diverse polymers and non-polymeric layers allowed a long product shelf-life and an optimized material efficiency. The need for more recyclable solutions asks for a reduction in the choice of material. Prospectively, there is a strong tendency that multilayer flexible barrier packaging should be based on polyolefins and a few recyclable barrier layers, such as aluminium oxide (AlOx) and silicon oxide (SiOx). The use of ethylene vinyl alcohol (EVOH) and metallization could be more restricted in the future, as popular Design for Recycling Guidelines have recently reduced the maximum tolerable content of barrier materials in polyolefin packaging. The substitution of non-recyclable flexible barrier packaging is challenging because only a limited number of barriers are available. In the worst case, the restriction on material choice could result in a higher environmental burden through a shortened food shelf-life and increased packaging weights.

Analisa Perbandingan Squid 2.7, Squid3, Dan Squid Lusca Sebagai Cache Proxy Server Pada Ubuntu Server

RT/RW Net Joho Baru is one of the internet service provider organizations. As one of the growing internet service provider RT/RW Net Joho Baru has to give the best and the quickest services to the customers. So that it need appropriate technology which is support to the best networks to give good services to the customers. The Important factors are cost and speed factors which related to the material efficiency and time. This research is comparing about proxy server operating systems such as Squid 2.7, Squid3, and Squid Lusca, so that it can easier to find out the appropriate operating systems to build the best network. SDLC Method has several steps. The first step is the analysis of feasibility study which included software and hardware. The second step is the analysis of needs which is planning relate to the system project. Then network planning design is going apply. Next, continuing design system to system testing. Based on these steps, the proxy server is successfully to shorten time management on accessing the website. The results of the efficiency acquisition are Squid 2.7 at 75,1%, Squid3 at 83,5%, and Squid Lusca at 86,9%.

Sustainable Architectural Investigations on Bugis Vernacular House: Case Study of Tenun Tourism Village, Samarinda Seberang, East Kalimantan, Indonesia

Sustainability is a global problem, and architecture can contribute through vernacular architecture. To find out the potential of vernacular architecture to contribute, it is necessary to study sustainable architecture in vernacular houses. In this study, an investigation of sustainable architecture in Bugis vernacular houses will be carried out with a case study of the Tenun Tourism Village. We find that to contribute to the field of architecture, an approach through the concept of sustainable architecture is needed, one of which is green architecture. Thus, we conclude that there is a need for a sustainable architectural investigation of Bugis vernacular houses with green architecture approach and through the assessment of EDGE indicators. The results of this study indicate that the Bugis vernacular architecture in the Tenun Tourism Village can contribute to the issue of sustainability. However, it needs some renovations and additional technology. In addition, the material efficiency can still be maintained even though the material is replaced with the latest material.

The Market’s Maturity for Public Procurement of Circular Furniture: A Study from Latvia

Public procurement plays an important role in the market by making up 14% of the Gross Domestic Product in the European Union, therefore it is seen as an important instrument to promote such products and services that better meet society’s demands, for example, sustainability. Starting from 2015, circularity is an important aspect of sustainability. Furniture is among the product groups with a significant impact on the material footprint, therefore approaches to increase material efficiency and circularity are of high value. With this research, the authors investigate the market’s maturity, i.e. the readiness of suppliers to offer circular furniture and services, as well as the readiness of municipalities to uptake it. 20 companies and 27 municipalities took part in the survey. Results show that the surveyed companies currently are more ready to offer more circular products and services than municipalities require in the procurement tenders. Most surveyed municipalities are maintaining and repairing the furniture by themselves that is a circular approach but without outsourcing. The market consultation before the tendering could help to understand the market abilities better and lead to more circular purchasing contracts. This is an important task considering the importance of public procurement in promoting a circular economy.