In this paper, the function of soil and water conservation of vegetation is studied. Firstly, the mechanism of its action is analyzed, and then the current research status is discussed, so as to determine the future r...In this paper, the function of soil and water conservation of vegetation is studied. Firstly, the mechanism of its action is analyzed, and then the current research status is discussed, so as to determine the future research direction. This has an important promoting effect on solving the current soil erosion phenomenon and ensuring the vegetation coverage.展开更多
With the rapid development of economy and the increase of people＇s living standards, functional foods are being gradually embraced by consumers and have a great growth potential. Rice is the main staple food in China...With the rapid development of economy and the increase of people＇s living standards, functional foods are being gradually embraced by consumers and have a great growth potential. Rice is the main staple food in China. It plays an important role in promoting people＇s health and in improving public nutrition, and therefore there is an ever-increasing consumer demand for rice for its functional quality. This study introduces the concept of functional rice and summarizes the current research progress on this topic and the application of breeding strategies including traditional breeding, induced mutagenesis, molecular marker-assisted selection and transgenic engineering in the research of a new generation of functional rice that posses health benefits, therapeutic values, bioreactor properties, and other unique functions. We then point out the prospect of functional rice from the point of view of social development, germplasm innovation, breeding of functional rice by biological technology and the test of active material related functional rice. We conclude that developing and marketing of functional rice is becoming a subject of great importance for research and is to be the focus of research in future.展开更多
A new fit of the pion parton distribution functions is provided. Only valence quark distributions are used at a low evolution scale and are evolved with the modified Dokshitzer- Gribov-Lipatov-Altarelli-Parisi equatio...A new fit of the pion parton distribution functions is provided. Only valence quark distributions are used at a low evolution scale and are evolved with the modified Dokshitzer- Gribov-Lipatov-Altarelli-Parisi equation which is briefly introduced in this work, and the sea quark and gluon distributions are only generated by the quantum chromodynamics processes. We find that the patton distributions can explain the pion-nucleon experiments data well, and it can also be compared with the data from the leading neutron data of experiments at HERA. The momentum distributions among the partons are discussed and our results are consistent with some models.展开更多
Functional rice has functions of adjusting human physiological functions of and preventing diseases. At present,there are researches both at home and abroad about the relationship between nutritional quality and physi...Functional rice has functions of adjusting human physiological functions of and preventing diseases. At present,there are researches both at home and abroad about the relationship between nutritional quality and physiological active substances of rice and human physiological activities. Through conventional breeding,gene mutation technology,and molecular-assisted selection( MAS) technology,it is feasible to select and breed new rice varieties and plants with certain health care functions.展开更多
草地生态系统作为全球陆地生态系统的主体类型之一,其固碳潜力较大,在全球碳循环和气候变化方面具有重要的调节作用。本文使用VOSviewer和CiteSpace两种可视化软件对Web of Science(WOS)核心合集和中国知网(CNKI)数据库中1999—2022年...草地生态系统作为全球陆地生态系统的主体类型之一,其固碳潜力较大,在全球碳循环和气候变化方面具有重要的调节作用。本文使用VOSviewer和CiteSpace两种可视化软件对Web of Science(WOS)核心合集和中国知网(CNKI)数据库中1999—2022年发表的4464篇论文进行计量学分析,以期揭示草地生态系统固碳功能领域的研究现状和发展态势。结果表明:草地生态系统固碳功能研究的发文数量总体呈现上升趋势。通过VOSviewer对WOS数据库中发文国家的分析显示,中国和美国是该研究领域的主要力量。利用CiteSpace对WOS和CNKI数据库中发文机构的分析显示,在WOS数据库中发文量位居前三的研究机构分别为中国科学院、美国农业部和中国科学院大学;在CNKI数据库中,西北农林科技大学、中国科学院大学和北京林业大学的研究最为活跃,但各研究团队的交流合作还需进一步加强。目前,该领域在两个数据库中的研究热点主要集中在气候变化、人类活动和土壤微生物群落对草地生态系统固碳功能变化的驱动作用,土壤碳储量的时空分异特征,以及草地生态系统固碳功能价值评估等方面。展开更多
文摘In this paper, the function of soil and water conservation of vegetation is studied. Firstly, the mechanism of its action is analyzed, and then the current research status is discussed, so as to determine the future research direction. This has an important promoting effect on solving the current soil erosion phenomenon and ensuring the vegetation coverage.
文摘With the rapid development of economy and the increase of people＇s living standards, functional foods are being gradually embraced by consumers and have a great growth potential. Rice is the main staple food in China. It plays an important role in promoting people＇s health and in improving public nutrition, and therefore there is an ever-increasing consumer demand for rice for its functional quality. This study introduces the concept of functional rice and summarizes the current research progress on this topic and the application of breeding strategies including traditional breeding, induced mutagenesis, molecular marker-assisted selection and transgenic engineering in the research of a new generation of functional rice that posses health benefits, therapeutic values, bioreactor properties, and other unique functions. We then point out the prospect of functional rice from the point of view of social development, germplasm innovation, breeding of functional rice by biological technology and the test of active material related functional rice. We conclude that developing and marketing of functional rice is becoming a subject of great importance for research and is to be the focus of research in future.
文摘A new fit of the pion parton distribution functions is provided. Only valence quark distributions are used at a low evolution scale and are evolved with the modified Dokshitzer- Gribov-Lipatov-Altarelli-Parisi equation which is briefly introduced in this work, and the sea quark and gluon distributions are only generated by the quantum chromodynamics processes. We find that the patton distributions can explain the pion-nucleon experiments data well, and it can also be compared with the data from the leading neutron data of experiments at HERA. The momentum distributions among the partons are discussed and our results are consistent with some models.
基金Supported by Key Scientific and Technological Planning Project of Anhui Province(201503zc03029)Bozhou University-Enterprise Cooperation Technological Innovation Platform Project(2016xqzx05)
文摘Functional rice has functions of adjusting human physiological functions of and preventing diseases. At present,there are researches both at home and abroad about the relationship between nutritional quality and physiological active substances of rice and human physiological activities. Through conventional breeding,gene mutation technology,and molecular-assisted selection( MAS) technology,it is feasible to select and breed new rice varieties and plants with certain health care functions.
文摘草地生态系统作为全球陆地生态系统的主体类型之一,其固碳潜力较大,在全球碳循环和气候变化方面具有重要的调节作用。本文使用VOSviewer和CiteSpace两种可视化软件对Web of Science(WOS)核心合集和中国知网(CNKI)数据库中1999—2022年发表的4464篇论文进行计量学分析,以期揭示草地生态系统固碳功能领域的研究现状和发展态势。结果表明:草地生态系统固碳功能研究的发文数量总体呈现上升趋势。通过VOSviewer对WOS数据库中发文国家的分析显示,中国和美国是该研究领域的主要力量。利用CiteSpace对WOS和CNKI数据库中发文机构的分析显示,在WOS数据库中发文量位居前三的研究机构分别为中国科学院、美国农业部和中国科学院大学;在CNKI数据库中,西北农林科技大学、中国科学院大学和北京林业大学的研究最为活跃,但各研究团队的交流合作还需进一步加强。目前,该领域在两个数据库中的研究热点主要集中在气候变化、人类活动和土壤微生物群落对草地生态系统固碳功能变化的驱动作用,土壤碳储量的时空分异特征,以及草地生态系统固碳功能价值评估等方面。
