Search results for "Sources"
showing 10 items of 2554 documents
FUEL CELL POWERED WITH CANOLA OIL EMULSION
2017
The paper presents possibility of using canola oil as active substance to fuel cell powering. For this purpose a prototype fuel cell was built. Cell was powered with canola oil emulsion. As a detergent Syntanol DS-10 was used. The mesh electrode with Pt catalyst was used as a anode, and mesh electrode with Ni-Co catalyst was used as a cathode. The measurements conducted in the temperature range 293-333K. The maximum current density reached the level of 2 mA/cm2, and maximum power reached the level of 21 mW (at temp. 333K). So, the possibility of delivery of canola oil (in emulsion form) directly to the anode was shown. The obtain power is low, but was shown that it is possible to build the …
ELECTROOXIDATION OF USED SYNTHETIC ENGINE OIL IN AQUEOUS SOLUTION OF H2SO4
2017
The paper presents possibility of using used synthetic engine oil to direct electricity production. The measurements conducted in the temperature range 293-333 K. Were measured electrooxidation of used synthetic engine oil emulsion on a smooth platinum electrode in an aqueous solution of H2SO4. The emulsion prepared on the basis of a nonionic surfactant Syntanol DS-10. The maximum current density reached the level of 22 mA/cm2 (temp. 333 K). Measurements shows possibility of direct electricity production from used synthetic engine oil emulsion, so powering fuel cell of this oil.
USE OF Ni-Co ALLOY AS CATHODE CATALYST IN SINGLE CHAMBER MICROBIAL FUEL CELL
2017
Technology of microbial fuel cells allowing for the direct production of electricity from biodegradable materials can provide only energy production, but also wastewater treatment. This technology is seen as supporting of the traditional wastewater treatment. One of the problems with microbial fuel cells is a low current density of those energy sources. Nonetheless, it is possible to increase the current density by using the catalyst for electrodes (anode and cathode). The possibility of wastewater treatment using the Ni-Co alloy as catalyst for single chamber microbial fuel cells is presented in this paper. The studies have included measurements of H2O2 reduction on Ni-Co catalyst, power o…
Sustainable financing through crowdfunding
2019
The phenomenon of crowdfunding has been widely studied, while the sustainability of crowdfunded ventures is attracting growing interest from academia and society. In light of this interest, we conducted bibliometric analysis to study the relationship between crowdfunding and crowdfunded ventures&rsquo
Emotional Intelligence and Psychobiosocial States: Mediating Effects of Intra-Team Communication and Role Ambiguity
2020
Emotional intelligence is an important variable related to the interaction and functioning of sports teams. The present study examined the relationship between players’ trait emotional intelligence and functional and dysfunctional psychobiosocial states. In particular, we examined the mediating effects of intra-team communication efficacy and role ambiguity in this relationship. The participants were 291 (174 men and 117 women) Italian players involved in various team sports (i.e., futsal, soccer, volleyball, handball, and rugby). They completed a multi-section questionnaire assessing the study variables during the early/middle part of their competitive seasons. Structural equation modeling…
ROMANIAN SMES VERSUS THE GLOBAL FINANCIAL CRISISIMPEDIMENTS AND OPPORTUNITIES
2012
This paper studies the way small and medium sized enterprises have reacted towards the global financial crisis. It also attempts to study the impact this crisis had on both the activity of these enterprises and on the business mentality in Romania. The article studies the reasons which determined the SMEs’ vulnerability during the crisis; these belong to a wide range, spreading from the tightening of the financing options or of the activity, up to the management’s nature. The impact of the economic crisis is studied starting with the statistics in the specialty literature, which highlight the SMEs’ situation starting with 2008. Having as support these numbers, the paper analyzes the effects…
A New Water Governance Model Aimed at Supply–Demand Management for Irrigation and Land Development in the Mendoza River Basin, Argentina
2019
This study aimed at achieving an organizational solution for improving the governance of water and land use and, consequently, improving the supply&ndash
The Use of Non-Conventional Water Resources as a Means of Adaptation to Drought and Climate Change in Semi-Arid Regions: South-Eastern Spain
2019
Drought is a climatic risk with notable repercussions on water supply systems. The aim of this study is to analyze the principal measures for management and planning implemented during recent decades in south-eastern Spain (Segura River Basin) to respond to drought situations, focusing on the role played by non-conventional water resources (desalination and treated water). The results demonstrate that the study area (despite being one of the driest places of Spain) is less vulnerable to drought than regions with an Atlantic climate and greater availability of water. This has been possible thanks to the integration of non-conventional water resources as a means of adaptation to confront this…
Impact of Farmland Abandonment on Water Resources and Soil Conservation in Citrus Plantations in Eastern Spain
2019
Due to the reduction in the prices of oranges on the market and social changes such as the ageing of the population, traditional orange plantation abandonment in the Mediterranean is taking place. Previous research on land abandonment impact on soil and water resources has focused on rainfed agriculture abandonment, but there is no research on irrigated land abandonment. In the Valencia Region&mdash