Improving renewable

Xem 1-20 trên 39 kết quả Improving renewable
  • Energy is important for the existence and development of humankind and is a key issue in international politics, the economy, military preparedness, and diplomacy. To reduce the impact of conventional energy sources on the environment, much attention should be paid to the development of new energy and renewable energy resources. Solar energy, which is environment friendly, is renewable and can serve as a sustainable energy source. Hence, it will certainly become an important part of the future energy structure with the increasingly drying up of the terrestrial fossil fuel.

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  • Thermal power plants are one of the most important process industries for engineering professionals. Over the past decades, the power sector is facing a number of critical issues; however, the most fundamental challenge is meeting the growing power demand in sustainable and efficient ways. Practicing power plant engineers not only look after operation and maintenance of the plant, but, also look after range of activities including research and development, starting from power generation to environmental aspects of power plants.

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  • Soil fertility describes soil nutrient status and the factors controlling the supply of nutrients to plants. Continued efforts to improve soil fertility are required to support the world's growing demand for food, fiber, and renewable fuels. Important ecological services provided by soils, such as biodiversity, buffering capacity, and nutrient recycling benefit from the amendments applied to sustain soil fertility. Those amendments need to be applied in a manner that is both economical and practical for the producer to achieve agronomic objectives that are environmentally sound.

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  • Scientists who dedicate their research activity to biomaterials pass through the typical dichotomy that often characterizes the basic researc. On one side is the wish of exploring new frontiers of chemistry, physics, biology, medicine, pharmaceutics and all other disciplines to which biomaterials can be applied. The constantly improving scientific knowledge would feed the freedom of attempting new strategies for producing materials with always tailored and improved characteristics.

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  • Biofuels such as bioethanol are becoming a viable alternative to fossil fuels. Utilizing agricultural biomass for the production of biofuel has drawn much interest in many science and engineering disciplines. As one of the major crops, maize offers promise in this regard. Compared to other crops with biofuel potential, maize can provide both starch (seed) and cellulosic (stover) material for bioethanol production.

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  • The country case studies make clear that international partners share some of the blame, particularly because they too often fail to coordinate programs to help promote more integrated, comprehensive health care for women. However, it is equally clear that many of the obstacles are wholly local in nature: National governments and policymakers are often unable or unwilling to initiate or sustain health care programs and reforms that would improve women’s access to services and, by extension, reduce rates of vertical transmission.

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  • During the last two decades, increase in electricity demand and environmental concern resulted in fast growth of power production from renewable sources. Wind power is one of the most efficient alternatives. Due to rapid development of wind turbine technology and increasing size of wind farms, wind power plays a significant part in the power production in some countries.

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  • This report uses a new methodology for profiling sectors, building a picture of the LCEGS sector from  the bottom up, rather than from the top down as is traditionally the case.   Using a full sector analysis model (see Box 2.

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  • For the last nineteen years, I have had the great pleasure and privilege of teaching and learning about healing at the Rice Diet Program in Durham, North Carolina. Participants here, fondly nicknamed Ricers, have the opportunity to experience the fastest, safest, and most effective way to lose weight and improve every other modifi able risk factor of heart disease and, in fact, most diseases.

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  • The North Carolina Solar Center at NC State University, in collaboration with the National Renewable Energy Laboratory, examined 10 state financial-incentive programs in six states using a case-study approach in order to clarify the key factors—both internal and external to the program—that influence their effectiveness at stimulating deployment of renewable energy technologies. While existing information resources such as the National Database of State Incentives for Renewable Energy (DSIRE, www.dsireusa.

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  • Renewable fuels standard (RFS) policies are becoming a popular public policy mechanism for developing the market for renewable fuels in the transportation sector. During the past decade, U.S. states and several countries began implementing these more market-based (less command and control) policies to support increased biofuels production and use. This paper presents an overview of current and proposed U.S. state-level policies, as well as selected electric sector policies and international fuel standard policies. Current U.S.

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  • ,,,and the Army Materiel Command (AMC) have been examining which systems (both type and portion of the fleet) should be recapitalized and defining what that renewal process should involve (the extent of work for each “overhaul”). Accordingly, OASA(ALT) is sponsoring RAND Arroyo Center research on how equipment age affects readiness and resource requirements, to aid analyses in support of RECAP decisions.

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  • In 2008, the price of green power for residential customers in utility programs ranged from -1.0¢/kWh (a savings compared to standard service) to 8.8¢/kWh above standard electricity rates, with an average premium of 1.8¢/kWh and median of 1.5¢/kWh. These premiums have been adjusted to account for any fuel-cost exemptions granted to green power program participants. 16 In 2008, the utility programs with the lowest premiums for energy derived from new renewable sources had premiums ranging from -1.0¢/kWh (a savings) to 0.9¢/kWh. On average, consumers spend about $5.

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  • Earlier, Lau and Yotopolous (1971) estimated an equation for the profit function in differences in economic efficiency between large and small farms in India and found that small farms attained a higher level of economic efficiency. Sahidu (1974) adopted the Lau–Yotopolous model to sample of Indian wheat farms and came out with a contrary conclusion – that large and small farms exhibited equal economic efficiency in both the technical and price senses.

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  • The National Settlement Service allows participants in private-sector clearing arrangements to do multilateral funds settlements on a net basis using balances in their Federal Reserve accounts. The service provides an automated mechanism for submitting settlement information to the Reserve Banks. It improves operational eff iciency and controls for this process and reduces settlement risk to participants by granting settlement f inality for movements of funds on settlement day.

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  • Renewable energy is shifting from the fringe to the mainstream of sustainable development. Past donor efforts achieved modest results but often were not sustained or replicated, which leads now to greater market orientation. Markets for rural household lighting with solar home systems, biogas, and small hydro power have expanded through rural entrepreneurship, government programs, and donor assistance, serving millions of households. Applications in agriculture, small industry, and social services are emerging. Public programs resulted in 220 million improved biomass cook stoves.

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  • This paper focuses primarily on application considerations for topping cogeneration cycles. For comparative purposes Figure 1 illustrates energy utilization effectiveness (the percent of total energy output from the cycle which is useful heat and/or power) for a typical non-reheat coal- fired utility/industrial plant configuration (three-stage feed water heating with steam conditions of 1450 psig / 950°F [101 bar / 510°C] steam conditions vs. a cogeneration facility utilizing the same fired boiler but with a non-condensing steam turbine generator that supplies steam to process.

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  • A key barrier to the use of plant-derived materials is the high cost of developing the market, even when unique new products have been created. As in many emerging product markets, research in new products begins in small companies that are under-capitalized and lack the resources needed to go beyond the laboratory scale. The success rate for commercialization is low and promising products often languish through lack of volume generation.

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  • At objective level, VNRC has worked closely with the ministry of health and provincial health authorities on communication efforts that aim at reducing further spread, infection, death and other impacts of HFMD. The national society has engaged in situation updates, coordination, planning and responses to HFMD at national and provincial level through using their role as a member in the steering committee for epidemic and pandemic prevention and control.

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  • Considered a “toy” language by serious web developers for most of its lifetime, Java- Script has regained its prestige in the past few years as a result of the renewed interest in Rich Internet Applications and Ajax technologies. The language has been forced to grow up quickly as client-side developers have tossed aside cut-andpaste JavaScript for the convenience of full-featured JavaScript libraries that solve difficult cross-browser problems once and for all and provide new and improved paradigms for web development....

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