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Nuclear encoded elongation factor EF-Tu is required for chloroplast development in rice grown under low-temperature conditions

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Journal of Genetics and Genomics 2022年第5期49卷 502-505页

作者： Liang Cai zongkai liu Long Cai Xiaofeng Yan Yuan Hu Benyuan Hao Zhuang Xu Yunlu Tian Xi liu Linglong liu Ling Jiang Shirong Zhou Jianmin Wan State Key Laboratory for Crop Genetics and Germplasm Enhancement Jiangsu Plant Gene Engineering Research CenterNanjing Agricultural UniversityNanjingJiangsu 210095China National Key Facility for Crop Gene Resources and Genetic Improvement Institute of Crop ScienceChinese Academy of Agricultural SciencesBeijing 100081China

As a thermophilic crop that originated in tropical and subtropical areas, rice is sensitive to low temperatures, particularly during the early seedling stage. Cold stress at the seedling stage inhibits chlorophyll biosynthesis and causes oxidative damage, resulting in death(Zhao et al., 2020). Investigation of the mechanism of chloroplast development in rice seedlings under low-temperature conditions is important for breeding varieties with increased cold resistance.

关键词： seedling breeding originated

Experimental and Numerical Analysis of Surface Magneto-Hydrodynamic Propulsion Induced by NdFeB Magnets

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Fluid Dynamics & Materials Processing 2021年第2期17卷 427-439页

作者： zongkai liu College of Automation Nanjing University of Science and TechnologyNanjing210094China Nanjing Yue Bo Power System Co. Ltd.Nanjing210094China

The so-called surface Magneto-hydro-dynamic(MHD)propulsion relies on the Lorentz force induced in weak electrolyte solutions(such as seawater or plasma)by NdFeB Magnets.The Lorentz force plays an important role in such dynamics as it directly affects the structures of flow boundary layers.Previous studies have mainly focused on the development of such boundary layers and related fluid-dynamic aspects.The main focus of the present study is the determination of electromagnetic field distributions around the propulsion units.In particular dedicated experiments and numerical simulations(based on the finite volume method)are conducted considering a NACA0012 airfoil immersed in seawater.The results show that,along the propulsion unit,the field strength undergoes a rapid attenuation in the direction perpendicular to the wall.

关键词： Vector finite element method edge element method NdFeB magnet Lorentz force

High-throughput haploid induction in species with bisexual flowers

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Plant Communications 2023年第1期4卷 209-212页

作者： Xiaolong Qi Jinchu liu zongkai liu Chen Chen Baojian Chen Shuwei Guo Zhongfu Ni Yu Zhong Shaojiang Chen Chenxu liu College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193China National Maize Improvement Center China Agricultural UniversityBeijing 100193China Hainan Yazhou Bay Seed Laboratory Sanya 572024China

Dear Editor,Doubled haploid(DH)technology can significantly accelerate the development of homozygous lines.DH breeding has achieved great success inmaize because of the discovery of the first haploid inducer,Stock6,and the development of a series of high-efficiency haploid inducers(Hu et al.,2016).Pioneering studies on the genetic basis of haploid induction(HI)revealed that loss-offunction mutation of the phospholipase gene ZmPLA1/MATL/NLD triggers HI and that the HI rate(HIR)can be dramatically enhanced by a single nucleotide substitution from T to C in ZmDMP(Jacquier et al.,2020).Remarkably,knockout of ZmPLA1/MATL/NLD homologs in rice,wheat,and foxtail millet results in HIRs of 2%–6%,5%–15%,and 2%–3%,respectively(Jacquier et al.,2020;Cheng et al.,2021).In addition,loss of function of ZmDMP-like genes enables HI in species including Arabidopsis,tomato,rapeseed,tobacco,etc.,with an average HIR of around 2%(Zhong et al.,2020,2022a,2022b).These successes have laid solid foundations for the construction of a universal DH breeding system in different crop species.More importantly,HI-Edit/IMGE systems that enable gene editing in elite germplasms have been established on the basis of HI,making HI even more important(Kelliher et al.,2019;Wang et al.,2019).

关键词： breeding elite enable

Electric Field Measurement and Application Based on Rydberg Atoms

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Electromagnetic Science 2023年第2期1卷 38-53页

作者： Bang liu Lihua Zhang zongkai liu Zian Deng Dongsheng Ding Baosen Shi Guangcan Guo Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China

Microwave sensing offers important applications in areas such as data communication and remote sensing.It has thus received much attention from academia,industry,and governments.Atomic wireless sensing uses the strong response of the large electric dipole moment of a Rydberg atom in response to an external field to achieve precise measurement of a radio frequency(RF)signal.This method offers advantages over traditional wireless sensing including ultrawide energy level transitions,which makes it responsive to RF electric fields over a wide bandwidth.Here,we briefly review the progress of electric field measurement based on Rydberg atoms.We discuss the properties of Rydberg atoms,measurement using Rydberg atoms,experimental progress in electric field measurement of different bands,and different methods for detecting electric fields(such as atomic superheterodyne,machine learning,and critically enhanced measurement).The development of Rydberg atomic measurement focuses on the advantages of Rydberg atomic sensing,especially when compared to conventional microwave receivers.This work is of major significance to developing Rydberg-based measurements in astronomy,remote sensing,and other fields.

关键词： Rydberg atoms Microwave sensing Atomic transition Machine learning

Establishment of an efficient haploid identification system by engineering anthocyanin accumulation in the wheat embryo

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Plant Communications 2023年第3期4卷 7-10页

作者： Xiaolong Qi Shuwei Guo Yu Zhong Baojian Chen zongkai liu Tongzheng Yan Bin Feng Zhongfu Ni Shaojiang Chen Chenxu liu College of Agronomy and Biotechnology China Agricultural UniversityBeijing 100193China National Maize Improvement Center China Agricultural UniversityBeijing 100193China Sanya Institute of China Agricultural University Sanya 572024China Hainan Yazhou Bay Seed Laboratory Sanya 572024China These authors contributed equally to this article

Dear Editor,Bread wheat(Triticum aestivum)is one of the most important food crops and provides approximately 20%of the food calories for human consumption.A 70%increase in wheat production is needed by 2050 to keep pace with the growing global population(International Wheat Genome Sequencing,2014).Developing superior cultivars is an efficient way to improve yield.Nevertheless,conventional breeding is time consuming,as more than eight generations are needed to develop new plant varieties.Using doubled haploid(DH)technology,homozygous lines can be produced in only two generations,dramatically accelerating the breeding process.In wheat,haploids can be obtained by cross pollination with corn pollen followed by embryo rescue(Laurie and Bennett,1988).In maize,haploids can be induced by haploid inducer lines derived from Stock6(liu et al.,2022).The cloning of two genes that control haploid induction(HI)in maize,MATL/ZmPLA1/NLD and ZmDMP,paved the way for DH breeding in more crop species(Jacquier et al.,2020).Further studies have shown that loss of function of TaPLAs triggers wheat HI with an efficiency of 5.88%to 31.6%(liu et al.,2020a,2020b);this would be a promising approach for establishing a new,simple,and more efficient DH breeding method in wheat.

关键词： breeding crops cultivar

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基于射击时机的坦克射击门分析及改进

火力与指挥控制 2024年第3期49卷 124-129页

作者：张贤椿姚志军王军刘宗凯南京理工大学自动化学院南京210094 白城兵器试验中心吉林白城137001

针对坦克的射击门控制逻辑,分析现有射击门在坦克高速行进条件下在射击时机判断上的不足,提出基于预测机制的射击门改进方法,该射击门在考虑射击时延和炮口切向速度影响的情况下,去除了身管必须满足进入简单射击门的角度约束,可更大限... 详细信息

针对坦克的射击门控制逻辑,分析现有射击门在坦克高速行进条件下在射击时机判断上的不足,提出基于预测机制的射击门改进方法,该射击门在考虑射击时延和炮口切向速度影响的情况下,去除了身管必须满足进入简单射击门的角度约束,可更大限度地把握有效射击时机,数字仿真结果验证了改进射击门的优越性。

关键词：坦克炮身管射击门预测机制射击时机

基于里德堡原子电场传感的计量、通信以及混合量子系统

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Science Bulletin 2024年第10期69卷 1515-1535页

作者：张好马宇廖开宇杨文广刘宗凯丁冬生颜辉李文辉张临杰 State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Laser SpectroscopyShanxi UniversityTaiyuan 030006China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230036China Key Laboratory of Atomic and Subatomic Structure and Quantum Control(Ministry of Education) Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of MatterSchool of PhysicsSouth China Normal UniversityGuangzhou 510006China Centre for Quantum Technologies National University of SingaporeSingapore 117543Singapore Hefei National Laboratory Hefei 230088China

Rydberg atoms-based electric field sensing has developed rapidly over the past decade.A variety of theoretical proposals and experiment configurations are suggested and realized to improve the measurement metrics,such as intensity sensitivity,bandwidth,phase,and accuracy.The Stark effect and electromagnetically induced transparency(EIT)or electromagnetically induced absorption(EIA)are fundamental physics principles behind the stage.Furthermore,various techniques such as amplitude-or frequency-modulation,optical homodyne read-out,microwave superheterodyne and frequency conversion based on multi-wave mixing in atoms are utilized to push the metrics into higher levels.In this review,different technologies and the corresponding metrics they had achieved were presented,hoping to inspire more possibilities in the improvement of metrics of Rydberg atom-based electric field sensing and broadness of application scenarios.

关键词： Rydberg atom Electric field sensing Atomic sensor

基于中国高校教学科研成果大数据分析平台期刊发文分析——以2016~2021年平顶山学院为例

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甘肃科技纵横 2022年第12期51卷 54-58页

作者：刘宗凯平顶山学院图书馆河南平顶山467000

目的/意义:介绍中国高校教学科研成果大数据分析平台的使用方法,拓展高校科研成果统计分析路径,标定高校科研优势学科。方法/过程:利用中国高校教学科研成果大数据分析平台,对2016~2021年平顶山学院师生在国内外学术期刊发表的论文数据... 详细信息

目的/意义:介绍中国高校教学科研成果大数据分析平台的使用方法,拓展高校科研成果统计分析路径,标定高校科研优势学科。方法/过程:利用中国高校教学科研成果大数据分析平台,对2016~2021年平顶山学院师生在国内外学术期刊发表的论文数据进行趋势分析、对比分析和学科分析。结果/结论:通过对WAJCI、SCI、南大核心、北大核心以及国内学术期刊论文总量等发文指数大数据的聚类、分类和赋值分析,找出平顶山学院各指标体系发文数据的差异和规律,为学校科研导向、目标制定、重点学科建设以及科研评价机制提供参考和建议。

关键词：大数据科研成果期刊论文高校平顶山学院

高校图书馆中华优秀传统文化经典阅读推广的实践与策略

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河南图书馆学刊 2022年第12期42卷 42-44页

作者：刘宗凯平顶山学院图书馆河南平顶山467000

中华优秀传统文化为阅读推广注入了源水和活力,阅读推广也为中华优秀传统文化经典引来了更多拥趸,高校图书馆应基于大学生的年级、专业、研究层次等特点,构建完善的中华优秀传统文化经典阅读推广体系。文章梳理归纳了高校图书馆开展中... 详细信息

中华优秀传统文化为阅读推广注入了源水和活力,阅读推广也为中华优秀传统文化经典引来了更多拥趸,高校图书馆应基于大学生的年级、专业、研究层次等特点,构建完善的中华优秀传统文化经典阅读推广体系。文章梳理归纳了高校图书馆开展中华优秀传统文化经典阅读推广的实践,提出了通过构建常态化机制、合作联动、创建沉浸式阅读空间等措施,以期提升中华优秀传统文化阅读推广的效能。

关键词：高校图书馆传统文化阅读推广经典