scholarly journals Eco-Dimensioning Approach for Planar Transformer in a Dual Active Bridge (DAB) Application

Eng ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 544-561
Author(s):  
Glauber de Freitas Lima ◽  
Boubakr Rahmani ◽  
Maud Rio ◽  
Yves Lembeye ◽  
Jean-Christophe Crebier
Keyword(s):  
Life Cycle ◽  
Energy Cost ◽  
Ecological Impact ◽  
Power Electronic ◽  
Figures Of Merit ◽  
Dual Active Bridge ◽  
Power Electronics Converters ◽  
The Earth ◽  
Main Components ◽  
Whole Life Cycle

Power electronics converters are traditionally designed regarding efficiency, power density, cost, and reliability figures of merit. Today, with the extreme spread of power electronic applications in our modern societies, together with the earth limits in terms of materials resources, it is important to consider the ecological impact of the converter not only during its usage, but over its whole life cycle. This article introduces an eco-dimensioning methodology for analyzing and accounting for the energy consumption over the entire converter life. The analysis is applied on a small DC-DC converter considering the main components dual active bridge (DAB) converter. The planar transform is one of the key elements modeled in this article, including material and manufacturing conditions. The traditional and eco-dimensioning approaches are carried out and compared in order to emphasize the possible consequences on total energy cost.

Life-Cycle Assessment of Electric Rice Cooker: A Case Study

2011 ◽  
Author(s):  
Zhenghui Sha ◽  
Gaurav Ameta
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Fossil Fuels ◽  
Raw Materials ◽  
Ecological Impact ◽  
Primary Data ◽  
Cycle System ◽  
Complete Life Cycle ◽  
Product Manufacturing ◽  
Whole Life Cycle

Nowadays, almost every family has one electric rice cooker, thus making electric rice cooker one of the most popular household appliance in our society. If the product is not designed ecologically and is used heavily, then the product may lead to large ecological impact to our environment. To assess a product’s environmental impacts, Life Cycle Assessment (LCA) methodology is utilized. However, to the best of the authors’ knowledge, for one such technology (electric rice cooker), no complete LCA studies have existed by far. Therefore, the question about the electric rice cooker’s environmental performance is still open. This paper presents an LCA study for the complete life cycle of an electric rice cooker with the power 500Watts as the functional unit. In order to conduct LCA study, the whole life cycle of electric rice cooker was divided into four primary phases: raw materials acquisition, product manufacturing, product utilization and final disposal. To facilitate the data collection and LCA implementation, the whole life cycle system was classified as two subsystems — background system and foreground system. Based on the proposed method, primary data and environmental impact calculation was aided by Simapro 7.2 software. In the light of the Ecoindicator-99 methodology, eleven impact categories (Carcinogens, Resp. organics, Resp. inorganics, Climate change, Radiation, Ozone layer, Ecotoxicity, Acidification, Land use, Minerals, Fossil fuels) were used for the classification and characterization of the life cycle impact assessment. In this paper, the LCA study was found as a very helpful tool to define ecodesign measures for this product. Several measures are suggested to the manufacturers to implement the ecodesign in the future: 1) Use recyclable plastics in the minor parts and hidden components, such as switcher, handle etc.; 2) Reduce the number of different materials in packaging; 3) Avoid incompatible plastics during recycling; 4) Minimize the volume of the heat plate on the premise of meeting the rated heating power.

scholarly journals Construction of exchange integrated information chain management model leading by information nurse for large instrument and equipment in operating room

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Jinghua Dai ◽  
Xiaoqiang Ren ◽  
Peng Wu ◽  
Xiangdong Wang ◽  
Jiang Li ◽  
...  
Keyword(s):  
Life Cycle ◽  
Life Cycle Management ◽  
Management Model ◽  
Control Group ◽  
Equipment Management ◽  
Observation Group ◽  
Chain Management ◽  
Information Chain ◽  
Whole Life Cycle ◽  
Running Mode

Abstract Background This study aims to explore the information chain management model of large instrument and equipment inter-working in the operating room (OR) led by information nurses. Methods Through the chain management process of large instruments and equipment in the OR, which was based on information nurses, the management model of inter-working and integrating information chain was established, the key links were controlled, and the whole life cycle management of instruments and equipment from expected procurement to scrapping treatment was realized. Using the cluster sampling method, 1562 surgical patients were selected. Among these patients, 749 patients were assigned to the control group before the running mode, and 813 patients were assigned to the observation group after the running mode. The related indexes for large instrument and equipment management in the department before and after the running mode were compared. Results In the observation group, the average time of equipment registration was (22.05 ± 2.36), the cost was reduced by 2220 yuan/year, and the satisfaction rate of the nursing staff was 97.62%. These were significantly better, when compared to the control group (P < 0.05). Furthermore, the awareness rate of the whole staff for equipment repair application was 95.12%, and the arrival time of maintenance personnel and the examination and approval time of equipment management were greatly shortened (P < 0.05). Conclusion The integrated management model of large instrument and equipment interworking in the OR based on chain flow realizes the whole life cycle management of instruments and equipment, which is essential to improve management efficiency.

scholarly journals BIM-Based Tools for Managing Construction and Demolition Waste (CDW): A Scoping Review

2021 ◽  
Vol 13 (15) ◽  
pp. 8427
Author(s):  
Bahareh Nikmehr ◽  
M. Reza Hosseini ◽  
Jun Wang ◽  
Nicholas Chileshe ◽  
Raufdeen Rameezdeen
Keyword(s):  
Life Cycle ◽  
Scoping Review ◽  
Construction And Demolition Waste ◽  
Future Research ◽  
Demolition Waste ◽  
Scant Attention ◽  
Intellectual Deficiencies ◽  
Whole Life Cycle ◽  
Point Of Reference ◽  
Design And Construction

This article provides a picture of the latest developments in providing BIM-based tools for construction and demolition waste (CDW) management. The coverage and breadth of the literature on offering BIM-based tools and technologies for dealing with CDW throughout the whole life cycle of construction are investigated, and gaps are identified. Findings reveal that, although various BIM-based technologies are closely associated with CDW, much of the existing research on this area has focused on the design and construction phase; indeed, the problem of CDW in post-construction stages has received scant attention. Besides, the now available tools and technologies are lacking in cross-phase insights into project waste aspects and are weak in theoretical rigor. This article contributes to the field by identifying the intellectual deficiencies in offering BIM-based tools and technologies when dealing with CDW. So, too, it points to major priorities for future research on the topic. For practitioners, the study provides a point of reference and raises awareness in the field about the most advanced available BIM-based technologies for dealing with CDW problems.

scholarly journals Interaction of Plasmodium falciparum apicortin with α- and β-tubulin is critical for parasite growth and survival

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Malabika Chakrabarti ◽  
Nishant Joshi ◽  
Geeta Kumari ◽  
Preeti Singh ◽  
Rumaisha Shoaib ◽  
...  
Keyword(s):  
Plasmodium Falciparum ◽  
Life Cycle ◽  
Specific Protein ◽  
Parasite Growth ◽  
Growth And Survival ◽  
Apicomplexan Parasites ◽  
Parasite Replication ◽  
Main Components ◽  
Β Tubulin

AbstractCytoskeletal structures of Apicomplexan parasites are important for parasite replication, motility, invasion to the host cell and survival. Apicortin, an Apicomplexan specific protein appears to be a crucial factor in maintaining stability of the parasite cytoskeletal assemblies. However, the function of apicortin, in terms of interaction with microtubules still remains elusive. Herein, we have attempted to elucidate the function of Plasmodium falciparum apicortin by monitoring its interaction with two main components of parasite microtubular structure, α-tubulin-I and β-tubulin through in silico and in vitro studies. Further, a p25 domain binding generic drug Tamoxifen (TMX), was used to disrupt PfApicortin-tubulin interactions which led to the inhibition in growth and progression of blood stage life cycle of P. falciparum.

Innovation and Corporate Social Responsibility in SMEs

2015 ◽  
Vol 808 ◽  
pp. 359-363
Author(s):  
Cristina Feniser ◽  
Florin Lungu
Keyword(s):  
Corporate Social Responsibility ◽  
Life Cycle ◽  
Open Innovation ◽  
Social Goals ◽  
New Approach ◽  
Rational Management ◽  
Corporate Social ◽  
Qualitative Exploration ◽  
Whole Life Cycle ◽  
The Relationship

So far little attention has been given the differences or the compatibilities between CSR and innovation. Few works treats CSR in combination with innovation. What exactly is the relationship between CSR and innovation? Recent phenomena such as open innovation is based on the concept that the stakeholder's dialogue that overlaps with some dimensions of CSR. Being innovative means to bring organizational and technical improvements which will translate into a better position in the market. These improvements don't just aim the product, but the process by which it is obtained and its whole life-cycle. We're talking about a new approach to innovation, namely its orientation towards sustainability. Although SMEs have many features which facilitate implementation of CSR, activities of this type in such organizations are still limited. SMEs managers often make choices that are related to rational management. This leads to divergence between economical and social goals. Through a qualitative exploration of the concepts of CSR and innovation, we wanted to find out from some managers whether there is a link between innovation and CSR in SMEs and whether the activities corresponding to the two concepts overlap in a certain measure.

Life Cycle Assessment of Urban Wastewater Treatment

2014 ◽  
Vol 535 ◽  
pp. 346-349
Author(s):  
Mei Wang ◽  
Ming Yang ◽  
Jun Liu ◽  
Jian Fen Li
Keyword(s):  
Wastewater Treatment ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Wastewater Treatment Plant ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Urban Wastewater ◽  
Urban Sewage ◽  
Urban Wastewater Treatment ◽  
Whole Life Cycle

Effect and benefits of a product or service could be analyzed and evaluated by life cycle assessment during the whole life cycle. Urban sewage treatment plants could improve and control urban water pollution escalating, but it also had certain harm to environment. Effect and benefits of urban wastewater treatment plant A and B were analyzed and evaluated, 13 factors were selected, and comprehensive benefits were researched quantificationally using the method of analytic hierarchy process. It found that urban wastewater treatment plant A who applied A/O process had better benefits than urban wastewater treatment plant B who applied BIOLAK process.

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