Help Me Help You (HMHY) was developed during the 2011-2012 academic year as a group-mentoring program for African-American students in the Virginia Tech College of engineering. HMHY was based on the VT PACT, a retenti...
详细信息
This study proposes the establishment of a healthy environment control system to control a building's outer layer elements, providing users with a comfortable, indoor healthy environmentTaking the L space as an ex...
详细信息
This study proposes the establishment of a healthy environment control system to control a building's outer layer elements, providing users with a comfortable, indoor healthy environmentTaking the L space as an example, a multi-objective decision-making method is used to develop an optimal control mechanism and method for a healthy environment control system, enabling the healthy environment control system to provide a healthy indoor environment and an optimal low energy consumption solution for building environmental control equipmentThe L space consequently has(1) PMV thermal comfort sensing,(2) low energy consumption building environmental control, and(3) use of natural ventilation to regulate the building's indoor microclimate, achieving the goal of establishing an energy-conserving, environmentally-friendly intelligent buildingResearch and practice uncovered important tasks for the next stage, including(1) the development of a simple environmental control microcontroller integration system, the establishment of a user interface mechanism for control system parameters, and(3) the development of logic control technology for decision trees.
Today, Mexico is one of the leading countries of the Latin American region in receiving foreign direct investment, with expected GDP growth for the coming years between 4% and 6% per annum, according to estimates publ...
详细信息
Today, Mexico is one of the leading countries of the Latin American region in receiving foreign direct investment, with expected GDP growth for the coming years between 4% and 6% per annum, according to estimates published by the OECD and other international organizations. Sustaining such growth demands the strengthening of one of the main pillars of economic development, the National Electricity Sector. To accomplish this growth in the electricity sector will require an energy portfolio that allows for three basic conditions in the sector's planning: reliability, economy and sustainability. To ensure the sustainability of the National Electric Sector, the optimal energy portfolio must meet the CO 2 eq emission reduction that the country has adopted based on international commitments. Sources of electricity generation with low water consumption as well as reduced pollutant discharge are needed, given the great importance of water efficiency in energy production. This paper determines an optimal energy portfolio involving conventional technologies, clean technologies and alternative and intermittent renewable technologies, based on a simple optimization model and using variables such as future electricity demand, CO 2 eq emissions by source, and taking into account data from several studies of life cycle assessment of the electricity sector, such as energy payback rate and water pollution. The research presented assumes two scenarios of growth in electricity demand of about 350 and 1,150 TW-hours in 2050.
With the increasing grid penetration levels of wind power, there is an increasing need to study both the power control systems and the regulatory aspects associated with frequency control capabilities of wind power pl...
详细信息
Major components of bamboo are solid hydrocarbons in the forms of cellulose, hemicellulose, lignins, and pentosan. The abundance of hydrocarbons indicates the potential of bamboo to be an excellent raw material to pro...
详细信息
Major components of bamboo are solid hydrocarbons in the forms of cellulose, hemicellulose, lignins, and pentosan. The abundance of hydrocarbons indicates the potential of bamboo to be an excellent raw material to produce hydrogen. In this study, 1-yr-old ma bamboo (Dendrocalamus latiforus) was liquefed with polyethylene glycol and then treated with plasma steam reforming to produce hydrogen. Productivity levels of hydrogen at different bamboo concentrations and pyrolysis temperatures were experimentally and theoretically studied. The liquefaction and pyrolysis apparatuses were hence optimized. A maximum productivity occurred at a weight ratio of 1:10 of ma bamboo to water and a pyrolysis temperature of 800°C by plasma treatment.
Food and agricultural production are among the most sensitive fields of application of nanotechnology. It is predicted that nanotechnology will revolutionize agriculture through new tools for disease treatment and det...
详细信息
The paper aims to investigate the potential of a water body to influence in lowering the warmth in the city of Sao Jose do Rio Preto, Brazil, due to the evaporative cooling effects. In order to verify its potential, t...
详细信息
The paper aims to investigate the potential of a water body to influence in lowering the warmth in the city of Sao Jose do Rio Preto, Brazil, due to the evaporative cooling effects. In order to verify its potential, three collecting points of temperature and humidity were placed in an urban area close to the municipal dam. The first one was placed on the dam margin, the second one, 50 m distant of the margin and, the third one, 100 m distant. The data were taken during December 2010 and then compared to the climate data of the Climate Station of CIIAGRO-Integrated Center of Agro Meteorological. The results show that the closer the collection point is to the water body, and the lower is the temperature variation. The humidity taxes verified at the closest point to the water body indicate values higher than those ones collected at the most distant point. The insertion of moisture through the water bodies in an urban environment demonstrated to be a strategy that improved the thermal conditions and has to be considered for urban planners to establish strategies of urban occupation.
Egypt is one of the most vulnerable countries to climate change due to the expected detrimental impacts on coastal zones, agriculture, water security as well as indirect social and health impacts. Egypt is responsible...
详细信息
Egypt is one of the most vulnerable countries to climate change due to the expected detrimental impacts on coastal zones, agriculture, water security as well as indirect social and health impacts. Egypt is responsible for 0.57% of the global greenhouse gas (GHG) emissions. Although Egypt is a non-annex I country not requiring any specific emission reduction or limitation targets under the Kyoto protocol, its National plans have included mitigation measures to reduce its greenhouse gases. The main sectors contributing to climate change in Egypt are energy, industry, agriculture and waste. Waste, on the other hand, has been accumulating in the streets of Egypt and along its water banks causing considerable air, soil and water pollution and indirect detrimental health impacts. However, this waste which is composed of organic municipal waste, agricultural residues, agro-industrial waste, animal manure and sewage sludge are valuable biomass resources. Utilizing the waste resources of Egypt especially the biomass or the organic component of this waste will not only solve some of the pressing economic needs of Egypt such as animal fodder, fertilizer and fuel but will also alleviate environmental burdens through decreasing air pollution and greenhouse gas emissions in the sector of waste as well as those of energy, industry and agriculture. This paper quantifies the biomass resources in Egypt generated from different waste resources. Then it demonstrates the efforts that Egypt made to contribute to global greenhouse gas emissions reductions through the Kyoto Protocol’s clean development mechanism (CDM). The projects in the waste sector already established in Egypt and approved as CDM projects are listed, which are related to waste management facilities and those which are waste to energy projects. Finally, a list of mitigation projects as proposed by the Egyptian government to decrease GHGs as related to the waste sector are enumerated.
Reusable and portable evanescent wave biosensor for rapid, sensitive and highly selective direct detection of adenoviruses was developed. Here, specific antibody for the hexon protein of the virus was used as a recogn...
详细信息
暂无评论