The use of renewable energy is not new. More than 150 years ago, wood, which is one form of biomass, supplied up to 90 percent of our energy needs. Today, we are looking again at renewable resources to find new ways t...The use of renewable energy is not new. More than 150 years ago, wood, which is one form of biomass, supplied up to 90 percent of our energy needs. Today, we are looking again at renewable resources to find new ways to use them to help meet our energy needs. Overall consumption from renewable sources in the United States totaled 6.8 quads BTU （quadrillion Btu） in 2007 or about 7 percent of all energy used nationally. Consumption from renewable sources was at its highest point in 1997, at about 7.2 quads. Over half of renewable energy goes to producing electricity. Renewable energy plays an important role in the supply of energy. Even with the current fluctuating prices for fuel, U.S. residents and businesses pay a significant price for their utilities. Emissions from the evaporation and combustion of these traditional fossil fuels contributing to a range of environmental and health problems, causing poor air quality, and emitting greenhouse gases caused global warming. The method of producing alternative energy from municipal solid waste plastic is considered an effective way to meet the demand of energy need and save the environment at the same time.展开更多
Entrepreneurs are facing pressures related to sustainability, quality assurance, and the ability to meet client expectations. Such pressures require effective leadership to lead, change, and improve enterprise perform...Entrepreneurs are facing pressures related to sustainability, quality assurance, and the ability to meet client expectations. Such pressures require effective leadership to lead, change, and improve enterprise performance in order to meet the demand for current and future business. Many of the new changes that are occurring in business today are transformational. They are driven by the environment and client need. The entrepreneur may not know the exact outcome at first, because it emerges throughout the process. It requires a fundamental change in their mindset and organizational culture, and requires continual course corrections to the change process. This research was conducted to help the aspiring entrepreneurs to develop and improve their leadership style. One hundred and fifty successful Bicolano entrepreneurs were surveyed and interviewed about their actual leadership styles and practices and this was the basis for developing a leadership program for aspiring or future entrepreneurs. Transformational leadership was the leadership style fairly often use of the successful entrepreneurs and this is characterized as being optimist about future of their business, enthusiastic about what needs to be accomplished, articulate a compelling vision of the future and expresses confidence that goals will be achieved.展开更多
Better understanding of the factors that influence crop nitrogen(N) requirement plays an important role in improving regional N recommendations for rice(Oryza sativa L.) production. We collected data from 1 280 plot-l...Better understanding of the factors that influence crop nitrogen(N) requirement plays an important role in improving regional N recommendations for rice(Oryza sativa L.) production. We collected data from 1 280 plot-level measurements in different reaches of the Yangtze River, China to determine which factors contributed to variability in N requirement in rice. Yield, variety, and cropping system were significantly related to N requirement. The N requirement remained consistent at about 18.6 kg N Mg^(-1)grain as grain yield increased from 7 to 9 Mg ha^(-1), then decreased to 18.1, 16.9, and 15.9 kg N Mg^(-1)grain as yield increased to 9–10, 10–11, and > 11 Mg ha^(-1), respectively. The decreased requirement for N with increasing yield was attributable to declining N concentrations in grain and straw and increased harvest index. Super rice variety had lower N requirement(17.7 kg N Mg^(-1)grain) than ordinary inbred and hybrid varieties(18.5 and 18.3 kg N Mg^(-1)grain, respectively), which was a result of lower grain and straw N concentrations of super rice. The N requirements were 19.2, 17.8, and 17.5 kg N Mg^(-1)grain for early, middle, and late rice cropping systems, respectively. In conclusion, the rice N requirement was affected by multiple factors, including yield, variety, and cropping system, all of which should be considered when planning for optimal N management.展开更多
文摘The use of renewable energy is not new. More than 150 years ago, wood, which is one form of biomass, supplied up to 90 percent of our energy needs. Today, we are looking again at renewable resources to find new ways to use them to help meet our energy needs. Overall consumption from renewable sources in the United States totaled 6.8 quads BTU （quadrillion Btu） in 2007 or about 7 percent of all energy used nationally. Consumption from renewable sources was at its highest point in 1997, at about 7.2 quads. Over half of renewable energy goes to producing electricity. Renewable energy plays an important role in the supply of energy. Even with the current fluctuating prices for fuel, U.S. residents and businesses pay a significant price for their utilities. Emissions from the evaporation and combustion of these traditional fossil fuels contributing to a range of environmental and health problems, causing poor air quality, and emitting greenhouse gases caused global warming. The method of producing alternative energy from municipal solid waste plastic is considered an effective way to meet the demand of energy need and save the environment at the same time.
文摘Entrepreneurs are facing pressures related to sustainability, quality assurance, and the ability to meet client expectations. Such pressures require effective leadership to lead, change, and improve enterprise performance in order to meet the demand for current and future business. Many of the new changes that are occurring in business today are transformational. They are driven by the environment and client need. The entrepreneur may not know the exact outcome at first, because it emerges throughout the process. It requires a fundamental change in their mindset and organizational culture, and requires continual course corrections to the change process. This research was conducted to help the aspiring entrepreneurs to develop and improve their leadership style. One hundred and fifty successful Bicolano entrepreneurs were surveyed and interviewed about their actual leadership styles and practices and this was the basis for developing a leadership program for aspiring or future entrepreneurs. Transformational leadership was the leadership style fairly often use of the successful entrepreneurs and this is characterized as being optimist about future of their business, enthusiastic about what needs to be accomplished, articulate a compelling vision of the future and expresses confidence that goals will be achieved.
基金supported by the Special Fund for Agro-scientific Research in the Public Interest, China (No. 201303103)the National Key Research and Development Program, China (No. 2016YFD0200105)the Innovative Group Grant of the National Natural Science Foundation of China (No. 31121062)
文摘Better understanding of the factors that influence crop nitrogen(N) requirement plays an important role in improving regional N recommendations for rice(Oryza sativa L.) production. We collected data from 1 280 plot-level measurements in different reaches of the Yangtze River, China to determine which factors contributed to variability in N requirement in rice. Yield, variety, and cropping system were significantly related to N requirement. The N requirement remained consistent at about 18.6 kg N Mg^(-1)grain as grain yield increased from 7 to 9 Mg ha^(-1), then decreased to 18.1, 16.9, and 15.9 kg N Mg^(-1)grain as yield increased to 9–10, 10–11, and > 11 Mg ha^(-1), respectively. The decreased requirement for N with increasing yield was attributable to declining N concentrations in grain and straw and increased harvest index. Super rice variety had lower N requirement(17.7 kg N Mg^(-1)grain) than ordinary inbred and hybrid varieties(18.5 and 18.3 kg N Mg^(-1)grain, respectively), which was a result of lower grain and straw N concentrations of super rice. The N requirements were 19.2, 17.8, and 17.5 kg N Mg^(-1)grain for early, middle, and late rice cropping systems, respectively. In conclusion, the rice N requirement was affected by multiple factors, including yield, variety, and cropping system, all of which should be considered when planning for optimal N management.
