Semidwarf breeding has boosted crop production and is a well-known outcome from the first Green Revolution. The Green Revolution gene Semidwarf 1(SD1), which modulates gibberellic acid(GA) biosynthesis, plays a princi...Semidwarf breeding has boosted crop production and is a well-known outcome from the first Green Revolution. The Green Revolution gene Semidwarf 1(SD1), which modulates gibberellic acid(GA) biosynthesis, plays a principal role in determining rice plant height. Mutations in SD1 reduce rice plant height and promote lodging resistance and fertilizer tolerance to increase grain production. The plant height mediated by SD1 also favors grain yield under certain conditions. However, it is not yet known whether the function of SD1 in upland rice promotes adaptation and grain production. In this study, the plant height and grain yield of irrigated and upland rice were comparatively analyzed under paddy and dryland conditions. In response to dryland environments, rice requires a reduction in plant height to cope with water deficits. Upland rice accessions had greater plant heights than their irrigated counterparts under both paddy and dryland conditions, and appropriately reducing plant height could improve adaptability to dryland environments and maintain high grain yield formation. Moreover, upland rice cultivars with thicker stem diameters had stronger lodging resistance, which addresses the lodging problem. Knockout of SD1 in the upland rice cultivar IRAT104 reduced the plant height and grain yield, demonstrating that the adjustment of plant height mediated by SD1 could increase grain production in dryland fields. In addition, an SD1 genetic diversity analysis verified that haplotype variation causes phenotypic variation in plant height. During the breeding history of rice, SD1 allelic mutations were selected from landraces to improve the grain yield of irrigated rice cultivars, and this selection was accompanied by a reduction in plant height. Thus, five known mutant alleles were analyzed to verify that functional SD1 is required for upland rice production. All these results suggest that SD1 might have undergone artificial positive selection in upland rice, which provides further insights concerning greater plant height in upland rice breeding.展开更多
While navigating the brave new world of online shopping,China should strike a balance between embracing the future and preserving the traditions that enrich its cultural fabric.IN the bustling streets of China,a quiet...While navigating the brave new world of online shopping,China should strike a balance between embracing the future and preserving the traditions that enrich its cultural fabric.IN the bustling streets of China,a quiet revolution has taken place,reshaping the way people shop and interact with the market.E-commerce has emerged as a dominant force,offering a plethora of products and services at the fingertips of tens of millions.From the tiny needle to the grandest household appliances,from branded shoes to fresh fruits and vegetables,everything is just a click away.展开更多
Chinese-style modernization emphasizes the harmonious coexistence of man and nature and actively yet prudently promotes carbon peak and carbon neutrality.It delves deeply into the energy revolution,upholding the follo...Chinese-style modernization emphasizes the harmonious coexistence of man and nature and actively yet prudently promotes carbon peak and carbon neutrality.It delves deeply into the energy revolution,upholding the following principles:the“independence”of energy production,the“green”energy supply,the“security”of energy reserves,the“efficiency”of energy consumption,the“intelligence”of energy management,and the“economy”of energy costs.Efforts are being made to accelerate the planning and construction of a new type of energy system that is green and smart,with new energy,new electricity,new stored energy,and new smart energy as the mainstays,to ensure energy security.Currently,China is an energy power but not an energy superpower,and its energy consumption structure still needs further optimization.China’s new energy security strategy is composed of energy consumption revolution,energy supply revolution,energy technology revolution,and energy system revolution,complemented by comprehensive strengthening of international cooperation.This approach is aimed at advancing China’s energy revolution and transforming the nation’s energy supply pattern and shifting from a consumption mix in 2022.展开更多
The objective-scientific conclusions obtained from the researches conducted in various fields of science prove that era and worldview are in unity and are phenomena that determine one another,and era and worldview are...The objective-scientific conclusions obtained from the researches conducted in various fields of science prove that era and worldview are in unity and are phenomena that determine one another,and era and worldview are the most important phenomena in the understanding of geniuses,historical events,including personalities who have left a mark on the history of politics,and every individual as a whole.And it is appropriate to briefly consider the problem in the context of human and personality factors.It is known that man has tried to understand natural phenomena since the beginning of time.Contact with the material world naturally affects his consciousness and even his subconscious as he solves problems that are important or useful for human life.During this understanding,the worldview changes and is formed.Thus,depending on the material and moral development of all spheres of life,the content and essence of the progress events,as the civilizations replaced each other in different periods,the event of periodization took place and became a system.If we take Europe,the people of the Ice Age of 300,000 years ago,who engaged in hunting to solve their hunger needs,in other words,the age of dinosaurs,have spread to many parts of the world from Africa,where they lived in order to survive and meet more of their daily needs.The extensive integration of agricultural Ice Age People into the Earth included farming,fishing,animal husbandry,hunting,as well as handicrafts,etc.,and has led to the revolutionary development of the fields.As economic activities led these first inhabitants of the planet from caves to less comfortable shelters,then to good houses,then to palaces,labor activities in various occupations,including crafts,developed rapidly.Thus,the fads of the era who differed from the crowd(later this class will be called personalities,geniuses...-Kh.G.)began to appear.If we approach the issue from the point of view of history,we witness that the world view determines the development in different periods.This idea can be expressed in such a way that each period can be considered to have developed or experienced a crisis according to the level of worldview.In this direction of our thoughts,the question arises:So,what is the phenomenon of worldview of this era-XXI century?Based on the general content of the current events,characterized as the globalization stage of the modern world,we can say that the outlook of the historical stage we live in is based on the achievements of the last stage of the industrial revolution.In this article,by analyzing the history of the artificial intelligence system during the world industrial revolutions,we will study both the concept of progress of the industrial revolutions and the progressive and at the same time regressive development of the artificial intelligence system.展开更多
Since the Cession of Hong Kong for the British since the news of speech terms is strictly limited, long-term Hong Kong residents can not participate in local politics. But to allow discussion of political affairs in C...Since the Cession of Hong Kong for the British since the news of speech terms is strictly limited, long-term Hong Kong residents can not participate in local politics. But to allow discussion of political affairs in China outside Hong Kong. Thus, the various historical periods in the future, the progressive intellectuals to Hong Kong newspaper, publicity revolution, the process of democratic revolution in China, plays a very important role.展开更多
Animal Farm,full of symbolism,is regarded as a classic portrayal of anti-utopianism in the real world and a satire on the Russian Revolution.George Orwell expresses his views of totalitarianism by using animals to rep...Animal Farm,full of symbolism,is regarded as a classic portrayal of anti-utopianism in the real world and a satire on the Russian Revolution.George Orwell expresses his views of totalitarianism by using animals to represent the major characters from the period of the Russian Revolution,from Karl Marx and Tsar Nicholas II to Stalin and Trotsky.His characters and scenar io paint a vision of a world of communism in Soviet Union,and Animal Farm chronicles the events and people of the Russian Revolution.Based on the historical background of the novel,this thesis is to reveal the real-life counterparts that the fictional characters in Animal Farm represent,thus uncovering the true meaning of the story.展开更多
目的探讨多模型迭代重建技术对早期肺癌低剂量GE revolution CT成像质量的影响。方法将2018年1月~2019年6月于北京世纪坛医院就诊的240例早期肺癌患者作为观察对象,所有患者均行低剂量GE revolution CT成像检查,并采用多模型迭代重建技...目的探讨多模型迭代重建技术对早期肺癌低剂量GE revolution CT成像质量的影响。方法将2018年1月~2019年6月于北京世纪坛医院就诊的240例早期肺癌患者作为观察对象,所有患者均行低剂量GE revolution CT成像检查,并采用多模型迭代重建技术对图像进行重建。比较图像重建前后肺窗图像质量、纵膈窗图像质量及图像质量参数。结果与低剂量GE revolution CT图像相比,应用多模型迭代重建技术重建后的肺窗和纵膈窗图像质量提高,图像噪声降低(8.83±1.95 Hu vs 9.21±2.17 Hu),信噪比升高(7.21±1.30 vs 6.89±1.22),差异均有统计学意义(P<0.05),而CT值比较差异无统计学意义(65.01±7.94 Hu vs 65.38±8.26 Hu,P>0.05)。结论多模型迭代重建技术能够提高早期肺癌低剂量GE revolution CT成像质量,对早期肺癌的筛查具有重要临床应用价值。展开更多
基金supported by grants from the National Natural Science Foundation of China(32272079 and 32060474)the Yunnan Provincial Science and Technology Department,China(202101AS070001 and 202201BF070001-011)。
文摘Semidwarf breeding has boosted crop production and is a well-known outcome from the first Green Revolution. The Green Revolution gene Semidwarf 1(SD1), which modulates gibberellic acid(GA) biosynthesis, plays a principal role in determining rice plant height. Mutations in SD1 reduce rice plant height and promote lodging resistance and fertilizer tolerance to increase grain production. The plant height mediated by SD1 also favors grain yield under certain conditions. However, it is not yet known whether the function of SD1 in upland rice promotes adaptation and grain production. In this study, the plant height and grain yield of irrigated and upland rice were comparatively analyzed under paddy and dryland conditions. In response to dryland environments, rice requires a reduction in plant height to cope with water deficits. Upland rice accessions had greater plant heights than their irrigated counterparts under both paddy and dryland conditions, and appropriately reducing plant height could improve adaptability to dryland environments and maintain high grain yield formation. Moreover, upland rice cultivars with thicker stem diameters had stronger lodging resistance, which addresses the lodging problem. Knockout of SD1 in the upland rice cultivar IRAT104 reduced the plant height and grain yield, demonstrating that the adjustment of plant height mediated by SD1 could increase grain production in dryland fields. In addition, an SD1 genetic diversity analysis verified that haplotype variation causes phenotypic variation in plant height. During the breeding history of rice, SD1 allelic mutations were selected from landraces to improve the grain yield of irrigated rice cultivars, and this selection was accompanied by a reduction in plant height. Thus, five known mutant alleles were analyzed to verify that functional SD1 is required for upland rice production. All these results suggest that SD1 might have undergone artificial positive selection in upland rice, which provides further insights concerning greater plant height in upland rice breeding.
文摘While navigating the brave new world of online shopping,China should strike a balance between embracing the future and preserving the traditions that enrich its cultural fabric.IN the bustling streets of China,a quiet revolution has taken place,reshaping the way people shop and interact with the market.E-commerce has emerged as a dominant force,offering a plethora of products and services at the fingertips of tens of millions.From the tiny needle to the grandest household appliances,from branded shoes to fresh fruits and vegetables,everything is just a click away.
文摘Chinese-style modernization emphasizes the harmonious coexistence of man and nature and actively yet prudently promotes carbon peak and carbon neutrality.It delves deeply into the energy revolution,upholding the following principles:the“independence”of energy production,the“green”energy supply,the“security”of energy reserves,the“efficiency”of energy consumption,the“intelligence”of energy management,and the“economy”of energy costs.Efforts are being made to accelerate the planning and construction of a new type of energy system that is green and smart,with new energy,new electricity,new stored energy,and new smart energy as the mainstays,to ensure energy security.Currently,China is an energy power but not an energy superpower,and its energy consumption structure still needs further optimization.China’s new energy security strategy is composed of energy consumption revolution,energy supply revolution,energy technology revolution,and energy system revolution,complemented by comprehensive strengthening of international cooperation.This approach is aimed at advancing China’s energy revolution and transforming the nation’s energy supply pattern and shifting from a consumption mix in 2022.
文摘The objective-scientific conclusions obtained from the researches conducted in various fields of science prove that era and worldview are in unity and are phenomena that determine one another,and era and worldview are the most important phenomena in the understanding of geniuses,historical events,including personalities who have left a mark on the history of politics,and every individual as a whole.And it is appropriate to briefly consider the problem in the context of human and personality factors.It is known that man has tried to understand natural phenomena since the beginning of time.Contact with the material world naturally affects his consciousness and even his subconscious as he solves problems that are important or useful for human life.During this understanding,the worldview changes and is formed.Thus,depending on the material and moral development of all spheres of life,the content and essence of the progress events,as the civilizations replaced each other in different periods,the event of periodization took place and became a system.If we take Europe,the people of the Ice Age of 300,000 years ago,who engaged in hunting to solve their hunger needs,in other words,the age of dinosaurs,have spread to many parts of the world from Africa,where they lived in order to survive and meet more of their daily needs.The extensive integration of agricultural Ice Age People into the Earth included farming,fishing,animal husbandry,hunting,as well as handicrafts,etc.,and has led to the revolutionary development of the fields.As economic activities led these first inhabitants of the planet from caves to less comfortable shelters,then to good houses,then to palaces,labor activities in various occupations,including crafts,developed rapidly.Thus,the fads of the era who differed from the crowd(later this class will be called personalities,geniuses...-Kh.G.)began to appear.If we approach the issue from the point of view of history,we witness that the world view determines the development in different periods.This idea can be expressed in such a way that each period can be considered to have developed or experienced a crisis according to the level of worldview.In this direction of our thoughts,the question arises:So,what is the phenomenon of worldview of this era-XXI century?Based on the general content of the current events,characterized as the globalization stage of the modern world,we can say that the outlook of the historical stage we live in is based on the achievements of the last stage of the industrial revolution.In this article,by analyzing the history of the artificial intelligence system during the world industrial revolutions,we will study both the concept of progress of the industrial revolutions and the progressive and at the same time regressive development of the artificial intelligence system.
文摘Since the Cession of Hong Kong for the British since the news of speech terms is strictly limited, long-term Hong Kong residents can not participate in local politics. But to allow discussion of political affairs in China outside Hong Kong. Thus, the various historical periods in the future, the progressive intellectuals to Hong Kong newspaper, publicity revolution, the process of democratic revolution in China, plays a very important role.
文摘Animal Farm,full of symbolism,is regarded as a classic portrayal of anti-utopianism in the real world and a satire on the Russian Revolution.George Orwell expresses his views of totalitarianism by using animals to represent the major characters from the period of the Russian Revolution,from Karl Marx and Tsar Nicholas II to Stalin and Trotsky.His characters and scenar io paint a vision of a world of communism in Soviet Union,and Animal Farm chronicles the events and people of the Russian Revolution.Based on the historical background of the novel,this thesis is to reveal the real-life counterparts that the fictional characters in Animal Farm represent,thus uncovering the true meaning of the story.
文摘目的探讨多模型迭代重建技术对早期肺癌低剂量GE revolution CT成像质量的影响。方法将2018年1月~2019年6月于北京世纪坛医院就诊的240例早期肺癌患者作为观察对象,所有患者均行低剂量GE revolution CT成像检查,并采用多模型迭代重建技术对图像进行重建。比较图像重建前后肺窗图像质量、纵膈窗图像质量及图像质量参数。结果与低剂量GE revolution CT图像相比,应用多模型迭代重建技术重建后的肺窗和纵膈窗图像质量提高,图像噪声降低(8.83±1.95 Hu vs 9.21±2.17 Hu),信噪比升高(7.21±1.30 vs 6.89±1.22),差异均有统计学意义(P<0.05),而CT值比较差异无统计学意义(65.01±7.94 Hu vs 65.38±8.26 Hu,P>0.05)。结论多模型迭代重建技术能够提高早期肺癌低剂量GE revolution CT成像质量,对早期肺癌的筛查具有重要临床应用价值。
