Peanut(Arachis hypogaea L.)is an important oil crop.Oleic acid is a major factor that determines the quality of peanuts.Therefore,the high oleic and high oleic to linoleic acid ratio are the target traits in an advanc...Peanut(Arachis hypogaea L.)is an important oil crop.Oleic acid is a major factor that determines the quality of peanuts.Therefore,the high oleic and high oleic to linoleic acid ratio are the target traits in an advanced peanut breeding program.This study provided an extensive evaluation of the genetic and physical characteristics as well as disease resistance of 220 high oleic peanut varieties in China.Notably,these varieties clustered into five major categories based on their traits.A majority of these varieties have been bred using interspecific hybridization or selected from mutants of self-crossed parents,with the main parent varieties being Kaixuan 016 and CTWE.Analysis of disease resistance showed that most high oleic peanut varieties could resist two or three diseases.However,those varieties with resistance to multiple diseases were relatively scarce.Moreover,some high oleic peanut varieties showed no disease resistance or inadequate testing.The results further indicate that the genetic basis for high oleic peanut breeding is insufficient,highlighting the need for its further development.Importantly,our findings lay a critical foundation for future high oleic peanut breeding and promote better understanding of the genetic and trait diversity offered by these varieties.展开更多
The new energy power generation is becoming increasingly important in the power system.Such as photovoltaic power generation has become a research hotspot,however,due to the characteristics of light radiation changes,...The new energy power generation is becoming increasingly important in the power system.Such as photovoltaic power generation has become a research hotspot,however,due to the characteristics of light radiation changes,photovoltaic power generation is unstable and random,resulting in a low utilization rate and directly affecting the stability of the power grid.To solve this problem,this paper proposes a coordinated control strategy for a newenergy power generation system with a hybrid energy storage unit based on the lithium iron phosphate-supercapacitor hybrid energy storage unit.Firstly,the variational mode decomposition algorithm is used to separate the high and low frequencies of the power signal,which is conducive to the rapid and accurate suppression of the power fluctuation of the energy storage system.Secondly,the fuzzy control algorithm is introduced to balance the power between energy storage.In this paper,the actual data is used for simulation,and the simulation results show that the strategy realizes the effective suppression of the bus voltage fluctuation and the accurate control of the internal state of the energy storage unit,effectively avoiding problems such as overshoot and over-discharge,and can significantly improve the stability of the photovoltaic power generation systemand the stability of the Direct Current bus.It is of great significance to promote the development of collaborative control technology for photovoltaic hybrid energy storage units.展开更多
LION-shaped Yiyang City is to the south of Dongting Lake in north-central Hunan Province. The Zijiang River runs through the city from west to east, dividing it into two, and emptying into Dongting Lake. The Zishui Hi...LION-shaped Yiyang City is to the south of Dongting Lake in north-central Hunan Province. The Zijiang River runs through the city from west to east, dividing it into two, and emptying into Dongting Lake. The Zishui Highway Bridge links the areas north and south of the river.In ancient times the Zijiang River was called Yishui. As at that timeany place situated on the northern bank of a river was referred to as yang, and Yiyang was on the northern bank of what was then the Yishui River, hence its name.展开更多
Oral diseases, such as periodontitis, salivary gland diseases, and oral cancers, significantly challenge health conditions due to their detrimental effects on patient's digestive functions, pronunciation, and esth...Oral diseases, such as periodontitis, salivary gland diseases, and oral cancers, significantly challenge health conditions due to their detrimental effects on patient's digestive functions, pronunciation, and esthetic demands. Delayed diagnosis and non-targeted treatment profoundly influence patients' prognosis and quality of life. The exploration of innovative approaches for early detection and precise treatment represents a promising frontier in oral medicine.展开更多
[目的/意义]将以某个国家为研究对象的科学研究过程称为对该国的学术关注,并从国家层面开展学术关注度量与影响因素分析;旨在从宏观上了解国家学术关注行为的影响因素,并为理解国际关系提供新视角。[方法/过程]基于Web of Scicence核心...[目的/意义]将以某个国家为研究对象的科学研究过程称为对该国的学术关注,并从国家层面开展学术关注度量与影响因素分析;旨在从宏观上了解国家学术关注行为的影响因素,并为理解国际关系提供新视角。[方法/过程]基于Web of Scicence核心合集数据库,采集1998―2021年世界各国有关其他国家研究的论文数据,开展国家学术关注的度量和描述性统计分析;并从主客体国家特征和国家联系两个维度,采用多重线性回归方法,探索国家学术关注行为的影响因素。[局限]由于国家学术关注的影响因素非常复杂,不少因素存在难以获取和难以量化的问题。对于国家学术关注的影响因素的回归分析不够精确,有待进一步优化。[结果/结论]从散点图看,一个国家对于全球的学术关注程度和受到全球的学术关注量均受到该国的地理因素、社会因素、经济因素、科技因素、军事因素的影响。通过回归分析发现,在其它因素不变的情况下,军费开支大、国土面积大、人口总数大的国家受到全球的学术关注量更大,人口年度增长率高的国家对于全球的学术关注程度更大;部分情况下国土面积小、科技论文发文量小的国家对于全球的学术关注程度更高。与中国之间的自然、文化和经济联系均显著影响中国对其他国家的学术关注,在其他因素不变的情况下,与中国具有共同官方语言、国土接壤、进出口贸易额越大的国家较全球平均水平受到中国的学术关注更大。以上各种因素的影响随着国家范围和时间的变化而变化。展开更多
基金supported by grants from the Key Program of National Natural Science Foundation of China(NSFC)(No.U22A20475)Key Scientific and Technological Project of Henan Province(No.221111110500,161100111000,HARS-22-05-G1)the Key Scientific Research Project of Henan Higher Education Institutions(24A210007).
文摘Peanut(Arachis hypogaea L.)is an important oil crop.Oleic acid is a major factor that determines the quality of peanuts.Therefore,the high oleic and high oleic to linoleic acid ratio are the target traits in an advanced peanut breeding program.This study provided an extensive evaluation of the genetic and physical characteristics as well as disease resistance of 220 high oleic peanut varieties in China.Notably,these varieties clustered into five major categories based on their traits.A majority of these varieties have been bred using interspecific hybridization or selected from mutants of self-crossed parents,with the main parent varieties being Kaixuan 016 and CTWE.Analysis of disease resistance showed that most high oleic peanut varieties could resist two or three diseases.However,those varieties with resistance to multiple diseases were relatively scarce.Moreover,some high oleic peanut varieties showed no disease resistance or inadequate testing.The results further indicate that the genetic basis for high oleic peanut breeding is insufficient,highlighting the need for its further development.Importantly,our findings lay a critical foundation for future high oleic peanut breeding and promote better understanding of the genetic and trait diversity offered by these varieties.
基金supported by the State Grid Corporation of China Science and Technology Project,grant number 52270723000900K.
文摘The new energy power generation is becoming increasingly important in the power system.Such as photovoltaic power generation has become a research hotspot,however,due to the characteristics of light radiation changes,photovoltaic power generation is unstable and random,resulting in a low utilization rate and directly affecting the stability of the power grid.To solve this problem,this paper proposes a coordinated control strategy for a newenergy power generation system with a hybrid energy storage unit based on the lithium iron phosphate-supercapacitor hybrid energy storage unit.Firstly,the variational mode decomposition algorithm is used to separate the high and low frequencies of the power signal,which is conducive to the rapid and accurate suppression of the power fluctuation of the energy storage system.Secondly,the fuzzy control algorithm is introduced to balance the power between energy storage.In this paper,the actual data is used for simulation,and the simulation results show that the strategy realizes the effective suppression of the bus voltage fluctuation and the accurate control of the internal state of the energy storage unit,effectively avoiding problems such as overshoot and over-discharge,and can significantly improve the stability of the photovoltaic power generation systemand the stability of the Direct Current bus.It is of great significance to promote the development of collaborative control technology for photovoltaic hybrid energy storage units.
文摘LION-shaped Yiyang City is to the south of Dongting Lake in north-central Hunan Province. The Zijiang River runs through the city from west to east, dividing it into two, and emptying into Dongting Lake. The Zishui Highway Bridge links the areas north and south of the river.In ancient times the Zijiang River was called Yishui. As at that timeany place situated on the northern bank of a river was referred to as yang, and Yiyang was on the northern bank of what was then the Yishui River, hence its name.
基金supported by the National Natural Science Foundation of China Grants(82370945, 82171001, 82222015 and 82370915)Research Funding from West China School/Hospital of Stomatology Sichuan University(RCDWJS2023-1)。
文摘Oral diseases, such as periodontitis, salivary gland diseases, and oral cancers, significantly challenge health conditions due to their detrimental effects on patient's digestive functions, pronunciation, and esthetic demands. Delayed diagnosis and non-targeted treatment profoundly influence patients' prognosis and quality of life. The exploration of innovative approaches for early detection and precise treatment represents a promising frontier in oral medicine.
文摘[目的/意义]将以某个国家为研究对象的科学研究过程称为对该国的学术关注,并从国家层面开展学术关注度量与影响因素分析;旨在从宏观上了解国家学术关注行为的影响因素,并为理解国际关系提供新视角。[方法/过程]基于Web of Scicence核心合集数据库,采集1998―2021年世界各国有关其他国家研究的论文数据,开展国家学术关注的度量和描述性统计分析;并从主客体国家特征和国家联系两个维度,采用多重线性回归方法,探索国家学术关注行为的影响因素。[局限]由于国家学术关注的影响因素非常复杂,不少因素存在难以获取和难以量化的问题。对于国家学术关注的影响因素的回归分析不够精确,有待进一步优化。[结果/结论]从散点图看,一个国家对于全球的学术关注程度和受到全球的学术关注量均受到该国的地理因素、社会因素、经济因素、科技因素、军事因素的影响。通过回归分析发现,在其它因素不变的情况下,军费开支大、国土面积大、人口总数大的国家受到全球的学术关注量更大,人口年度增长率高的国家对于全球的学术关注程度更大;部分情况下国土面积小、科技论文发文量小的国家对于全球的学术关注程度更高。与中国之间的自然、文化和经济联系均显著影响中国对其他国家的学术关注,在其他因素不变的情况下,与中国具有共同官方语言、国土接壤、进出口贸易额越大的国家较全球平均水平受到中国的学术关注更大。以上各种因素的影响随着国家范围和时间的变化而变化。
