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灌溉和氮肥对普通型与奥帕克-2型玉米籽粒中赖氨酸和蛋白质含量的影响

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园艺与种苗 1992年第5期 20-24页

作者： K.R.Kniep s.c.mason 李晓晶

玉米是全世界最重要的谷物和营养蛋白来源之一。但玉米蛋白质中缺少非反刍动物食料中第一限制性氨基酸——赖氨酸。将纯合的隐性突变基因奥帕克-2(以下简称O2——译者注)转育到普通玉米中,可以改进玉米胚乳蛋白质的氨基酸结构,包括赖氨... 详细信息

玉米是全世界最重要的谷物和营养蛋白来源之一。但玉米蛋白质中缺少非反刍动物食料中第一限制性氨基酸——赖氨酸。将纯合的隐性突变基因奥帕克-2(以下简称O2——译者注)转育到普通玉米中,可以改进玉米胚乳蛋白质的氨基酸结构,包括赖氨酸的含量(Mertz等,1984;Nelson,1966)。

关键词：蛋白质含量质中玉米籽粒籽粒产量普通型氮肥水平杂交种杂交品种赖氨酸二氨基己酸帕克

灌溉和氮肥对普通型与奥帕克-2型玉米籽粒中赖氨酸和蛋白质含量的影响

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国外农学（杂粮作物） 1992年第5期 20-24页

作者： K.R.Kniep s.c.mason 李晓晶

关键词：玉米氮肥赖氨酸蛋白灌溉

乙烯利对玉米的可收获产量、籽粒品质和倒伏的影响

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园艺与种苗 1989年第5期 36-39页

作者： O.s.Norberg s.c.mason 王一民

据Zuber等(1978)估计,每年玉米的产量损失有5～25％是由茎秆倒伏造成的。现已证明,生长调节剂乙烯利能降低大麦和小麦的株高,减轻倒伏,从而增加可收获的产量。先前的一些研究表明,乙烯利同样也能改变玉米植株的形态,使株高和穗位高降低... 详细信息

据Zuber等(1978)估计,每年玉米的产量损失有5～25％是由茎秆倒伏造成的。现已证明,生长调节剂乙烯利能降低大麦和小麦的株高,减轻倒伏,从而增加可收获的产量。先前的一些研究表明,乙烯利同样也能改变玉米植株的形态,使株高和穗位高降低、茎秆增

关键词：乙烯利 2-氯乙基膦酸植物生长调节物质玉米杂交种籽粒产量籽粒品质

Geochemistry and depositional environment of fuchsite quartzites from sargur Group,western Dharwar craton,India

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Acta Geochimica 2024年第3期43卷 555-570页

作者： c.s.sindhuja G.Harshitha c.Manikyamba K.s.V.subramanyam csIR(council of scientific and Industrial Research)-National Geophysical Research Institute(NGRI) Uppal RoadHyderabad 500007India

Meso-Neoarchean fuchsite quartzites are present in different stratigraphic positions of Dharwar craton including the oldest(~3.3 Ga)sargur Group of western Dharwar *** present study deals with the petro-graphic and geochemical characteristics of the fuchsite quartzites from the Ghattihosahalli belt to evaluate their genesis,depositional setting and the enigma involved in the ancient sedimentation *** major mineral assemblages include quartz,fuchsite,and feldspars along with accessory kyanite and *** geochemical com-positions are characterized by high siO_(2),Al_(2)O_(3),low MgO,caO,strongly enriched cr(1326–6899 ppm),Ba(1165–3653 ppm),sr(46–210 ppm),V(107–868 ppm)and Zn(11–158 ppm)contents compared to the upper continental crust(Ucc).The Ucc normalized rare earth element(REE)patterns are characterized by depleted light REE[(La/sm)Ucc=0.33–0.95]compared to heavy REE[(Gd/Yb)_(Ucc)=0.42–1.65]with conspicuous positive Eu-anomalies(Eu/Eu^(*)=1.35–18.27)characteristic of hydrothermal solutions evidenced through the interlayered *** overall major and trace element systematics reflect a combined mafic-felsic provenance and suggest their deposition at a passive continental margin *** comprehensivefield,petrographic,and geo-chemical studies indicate that these quartzites are infiltrated by cr-richfluids released during high-grade metamorphism of associated ultramafic *** sargur and the subse-quent Dharwar orogeny amalgamated diverse lithounits from different tectonic settings,possibly leading to the release of cr-richfluids and the formation of fuchsite quartzite during or after the *** sug-gest a pre-existing stable crust prior to the sargur Group and the link between orogenic events and various mineral deposits in the Dharwar craton.

关键词： Dharwar craton Ghattihosahalli Fuchsite quartzite Provenance Depositional setting

Early Phases of star Formation: Testing chemical Tools

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Research in Astronomy and Astrophysics 2024年第1期24卷 96-118页

作者： N.c.Martinez s.Paron cONIcET-Universidad de Buenos Aires.Instituto de Astronomía y Física del Espacio Ciudad Universitaria(C1428EGA)Ciudad Autónoma de Buenos AiresArgentina

star-forming processes strongly influence the IsM ***,many high-quality databases are available at millimeter *** them,it is possible to carry out studies that review and deepen previous *** these studies involve large samples of sources,it is preferred to use direct tools to study the molecular *** the aim of testing these tools such as the use of the HcN/HNc ratio as a thermometer,and the use of H^(13)cO^(+),Hc_(3)N,N_(2)H^(+) and c_(2)H as "chemical clocks," we present a molecular line study toward 55 sources representing massive young stellar objects at different evolutionary stages:infrared dark clouds(IRDcs),highmass protostellar objects(HMPOs),hot molecular cores(HMcs) and ultracompact H II *** found that the use of the HcN/HNc ratio as a universal thermometer in the IsM should be taken with care because the HcN optical depth is a big issue that can affect the ***,this tool should be utilized only after a careful analysis of the HcN spectrum,checking that no line,neither the main nor the hyperfine ones,presents absorption *** point out that the analysis of the emission of H^(13)cO^(+),Hc_(3)N,N_(2)H^(+) and c_(2)H could be useful to trace and distinguish regions among IRDcs,HMPOs and *** molecular line widths of these four species increase from the IRDc to the HMc stage,which can be a consequence of the gas dynamics related to the starforming processes taking place in the molecular *** results not only contribute with more statistics,acting as a probe of such chemical tools,useful to obtain information in large samples of sources,but also complement previous works through the analysis of other types of sources.

关键词： stars:formation IsM:molecules IsM:clouds

Mathematical modeling and simulations of stress mitigation by coating polycrystalline particles in lithium-ion batteries

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Applied Mathematics and Mechanics(English Edition) 2024年第6期45卷 947-962页

作者： N.IQBAL J.cHOI s.F.sHAH c.LEE s.LEE Department of Mechanical Roboticsand Energy EngineeringDongguk University-SeoulSeoul 04620Republic of Korea

A chemo-mechanical model is developed to investigate the effects on the stress development of the coating of polycrystalline Ni-rich LiNixMnyco_(z)O_(2)(x≥0.8)(NMc)particles with poly(3,4-ethylenedioxythiophene)(PEDOT).The simulation results show that the coating of primary NMc particles significantly reduces the stress generation by efficiently accommodating the volume change associated with the lithium diffusion,and the coating layer plays roles both as a cushion against the volume change and a channel for the lithium transport,promoting the lithium distribution across the secondary particles more ***,the lower stiffness,higher ionic conductivity,and larger thickness of the coating layer improve the stress *** paper provides a mathematical framework for calculating the chemo-mechanical responses of anisotropic electrode materials and fundamental insights into how the coating of NMc active particles mitigates stress levels.

关键词： lithium-ion battery(LIB) polycrystalline particle coating finite element simulation Ni-rich LiNixMnyco_(z)O_(2)(x>0.8)(NMc)

Local MFs Matrix Decomposition Algorithms for Elliptic BVPs in Annuli

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NUMERIcAL MATHEMATIcs-THEORY METHODs AND APPLIcATIONs 2024年第1期17卷 93-120页

作者： chen, c. s. Karageorghis, Andreas Lei, Min Univ southern Mississippi Sch Math & Nat Sci Hattiesburg MS 39406 USA Univ cyprus Dept Math & Stat POB 20537 CY-1678 Nicosia Cyprus Taiyuan Univ Technol Coll Math Taiyuan 030024 Peoples R China

We apply the local method of fundamental solutions (LMFs) to boundary value problems (BVPs) for the Laplace and homogeneous biharmonic equations in annuli. By appropriately choosing the collocation points, the LMFs discretization yields sparse block circulant system matrices. As a result, matrix decomposition algorithms (MDAs) and fast Fourier transforms (FFTs) can be used for the solution of the systems resulting in considerable savings in both computational time and storage requirements. The accuracy of the method and its ability to solve large scale problems are demonstrated by applying it to several numerical experiments.

关键词： Local method of fundamental solutions Poisson equation biharmonic equation matrix decomposition algorithms fast Fourier transforms BOUNDARY-VALUE-PROBLEMs FUNDAMENTAL-sOLUTIONs RBF ALGORITHMs

The occurrence,inheritance,and segregation of complex genomic structural variation in synthetic Brassica napus

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The crop Journal 2024年第2期12卷 515-528页

作者： Dandan Hu Jin Lu Wenwen Li Yinghui Yang Junxiong Xu Han Qin Hao Wang Yan Niu Huaiqi Zhang Qingqing Liu Xiangxiang He Annaliese s.mason Jchris Pires Zhiyong Xiong Jun Zou National Key Laboratory of crop Genetic Improvement College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhan 430070HubeiChina college of Agronomy Henan Agricultural UniversityZhengzhou 450002HenanChina Key Laboratory of Herbage and Endemic crop Biotechnology Inner Mongolia UniversityHohhot 010070Inner MongoliaChina Plant Breeding Department University of BonnBonn 53115Germany Department of soil and crop sciences Colorado State UniversityFort CollinsCO 80523USA

"synthetic"allopolyploids recreated by interspecific hybridization play an important role in providing novel genomic variation for crop *** synthetic allopolyploids often undergo rapid genomic structural variation(sV).However,how such sV arises,is inherited and fixed,and how it affects important traits,has rarely been comprehensively and quantitively studied in advanced generation synthetic lines.A better understanding of these processes will aid breeders in knowing how to best utilize synthetic allopolyploids in breeding ***,we analyzed three genetic mapping populations(735 DH lines)derived from crosses between advanced synthetic and conventional Brassica napus(rapeseed)lines,using whole-genome sequencing to determine genome *** observed high tolerance of large structural variants,particularly toward the telomeres,and preferential selection for balanced homoeologous exchanges(duplication/deletion events between the A and c genomes resulting in retention of gene/chromosome dosage between homoeologous chromosome pairs),including stable events involving whole chromosomes("pseudoeuploidy").Given the experimental design(all three populations shared a common parent),we were able to observe that parental sV was regularly inherited,showed genetic hitchhiking effects on segregation,and was one of the major factors inducing adjacent novel and larger ***,novel sV occurred at low frequencies with no significant impacts on observed fertility and yield-related traits in the advanced generation synthetic ***,incorporating genome-wide sV in linkage mapping explained significantly more genetic variance for *** results provide a framework for detecting and understanding the occurrence and inheritance of genomic sV in breeding programs,and support the use of synthetic parents as an important source of novel trait variation.

关键词： Allopolyploid Large Genome structural variation Linkage mapping synthetic polyploids Inheritance and segregation