检索结果-南通市图书馆

American Journal of Plant Sciences 2020年第5期11卷 604-625页

作者： jordan d. Stanley Grant H. Mehring Jochum J. Wiersma Joel K. Ransom Syngenta Crop Protection LLC Glyndon Minnesota USA WestBred Bayer Crop Science Fargo North Dakota USA department of Agronomy and Plant Genetics University of Minnesota Crookston Minnesota USA department of Plant Sciences North Dakota State University Fargo North Dakota USA

Genotype and agronomic management greatly influence crop growth and grain yield in wheat (Triticum aestivum L.). To ensure sustainable production, seeding rate selection is important to maximize efficiency of every plant. Tillering can allow wheat plants to adjust growth relative to plant density and quality of growing conditions. This research sought to determine a method for assessing tillering of wheat cultivars and develop a standardized approach for characterizing cultivar tillering capacity. Nine cultivars with diverse genetic and phenotypic characteristics were seeded in 2017-2018 at Prosper, Nd using various seeding techniques at differing plant spacing arrangements to evaluate tillering habit and spikes plant-1. Cultivars grown at population densities common in grower fields did not express full tillering potential. Spaced-plantings of cultivars promoted cultivar expression of tillering phenotype. The SOFATT (seed only a few, and then thin) method, where average spikes plant-1 was determined from multiple plants sampled from a cultivar grown at spaced-plantings (inter-row and intra-row spacing at 30 ± 12 cm), is recommended to properly assess tillering habits of wheat cultivars. Breeders and researchers can use results from SOFATT evaluations to determine tillering capacity rating for each cultivar based on raw or transformed z-score values for spikes plant-1.

关键词： Tillering Capacity Wheat Cultivar Seeding density Plant Spacing Z-Score

Structure and magnetostructural correlation of ferrimagnetic meso-tetraphenylporphinatoman- ganese（III） dimethyl-N,N＇-dicyanoquinone diiminide, [MnTPP]~[Me2dCNQI]＂-

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国科学：化学 2012年第6期42卷 907-910页

作者： L.Arthur jordan H.Lapidus Saul W.Stephens Peter S.Miller Joel department of Chemistry University of Utah Salt Lake City Utah 84112-0850 USA department of Physics Photon Sciences directorate Brookhaven National Laboratory Upton NY 11973 USA

The structure [MnⅢTPP][Me2dCNQI] (TPP = tetraphenylporphinato; Me2dCNQI = 2,5-dimethyl-N,N′- dicyanoquinone-diimine) has been determined from X-ray powder diffraction data. The nonsolvated structure is composed of linear (1-d) chains of alternating [MnⅢTPP]+and μ-[Me2dCNQI]·- with intrachain Mn···Mn separations of 12.83 Å, and a Mn-NdCNQIdistance of 2.18 Å. The dihedral angle between the mean Mn(N4)TPPand [Me2dCNQI]·-planes, and the Mn-(N-C)dCNQIangle are 84.18° and 143.6°, respectively. [MnⅢTPP][Me2dCNQI] has a Tcof 4.3 K from the 10 Hz c"(T) data, 2-K coercivity of 5,600 Oe, and 6,300 emuOe/mol remnant magnetization that are reduced from that observed for related materials, and their inclusion extends the magnetostructural correlation between the intrachain coupling and both the dihedral angle between the mean Mn(N4)TPPand [TCNE]·-(TCNE = tetracyanoethylene) planes and Mn-(N-C)TCNEangles. This is in accord with the intrachain coupling arising from the overlap of the MnⅢdz2-like singly occupied molecular orbital (SOMO) and the z component of the [TCNE]·-π*(πz*) SOMO, which increases with decreasing dihedral angle between the mean Mn(N4)TPPand [TCNE]·-planes and Mn-(N-C)TCNEangle.

关键词：结构组成二甲基亚铁磁性四苯基卟啉细观粉末衍射数据 TPP 二面角

Inactivation of Mitochondrial Complex Ⅰ Induces the Expression of a Twin Cysteine Protein that Targets and Affects Cytosolic, Chloroplastidic and Mitochondrial Function

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2016年第5期9卷 696-710页

作者： Yan Wang Wenhui Lyu Oliver Berkowitz jordan d. Radomiljac Simon R. Law Monika W. Murcha Chris Carrie Pedro F. Teixeira Beata Kmiec Owen duncan Olivier Van Aken Reena Narsai Elzbieta Glaser Shaobai Huang Ute Roessner A. Harvey Millar James Whelan department of Animal Plant and Soil Science Australian Research Council Centre of Excellence in Plant Energy Biology School of Life Science La Trobe University Bundoora VIC 3086 Australia Ume(a)Plant Science Centre(UPSC) Faculty of Science and Technology Ume(a)University Ume(a) Sweden Australian Research Council Centre of Excellence in Plant Energy Biology University of Western Australia 35 Stirling Highway Crawley WA 6009 Australia department of Biology I Botany Ludwig-Maximilians-Universitat Munchen Groβhaderner Strasse 2-4 82152 Planegg-Martinsried Germany department of Biochemistry and Biophysics Stockholm University Atrhenius Laboratories for Natural Sciences 10691 Stockholm Sweden School of BioSciences The University of Melbourne Melbourne VIC 3010 Australia

At12Cys-1 （At5g64400） and At12Cys-2 （At5g09570） are two closely related isogenes that encode small, twin cysteine proteins, typically located in mitochondria. At12Cys-2 transcript is induced in a variety of mutants with disrupted mitochondrial proteins, but an increase in At12Cys protein is only detected in mutants with reduced mitochondrial complex I abundance. Induction of At12Cys protein in mutants that lack mitochondrial complex I is accompanied by At12Cys protein located in mitochondria, chloroplasts, and the cytosoh Biochemical analyses revealed that even single gene deletions, i.e., At12cys-1 orAtl2cys-2, have an effect on mitochondrial and chloroplast functions. However, only double mutants, i.e., At12cys-1：At12cys.2, affect the abundance of protein and mRNA transcripts encoding translation elongation factors as well as rRNA abundance. Blue native PAGE showed that At12Cys co-migrated with mitochondrial supercomplex I ＋ lU. Likewise, deletion of both At12cys-1 and At12cys-2 genes, but not single gene deletions, results in enhanced tolerance to drought and light stress and increased anti-oxidant capacity. The induction and multiple localization of At12Cys upon a reduction in complex I abundance provides a mechanism to specifically signal mitochondrial dysfunction to the cytosol and then beyond to other organelles in the cell.

关键词： mitochondria complex I retrograde signaling chloroplast cytosol

Fundamentals of corporate finance 7th ed.

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Engineering and characterization of dehalogenase enzymes from delftia acidovorans in bioremediation of perfluorinated compounds

2008年

作者： Stephen A. Ross Randolph W. Westerfield Bradford d. jordan.

来源：畅想之星图书光盘版（南... 评论

在线全文

畅想之星图书光盘版（南通市图书馆镜像）

学校读者我要写书评

暂无评论

Synthetic and Systems Biotechnology 2022年第2期7卷 683-688页

作者： Jackson d.Harris Collin M.Coon Megan E.doherty Eamon A.McHugh Margaret C.Warner Conley L.Walters Olivia M.Orahood Abigail E.Loesch david C.Hatfield John C.Sitko Erin A.Almand J.jordan Steel department of Biology United Stated Air Force AcademyColorado SpringsCO80840USA department of Biochemistry United States Air Force AcademyColorado SpringsCO80840USA department of Civil Engineering United States Air Force AcademyColorado SpringsCO80840USA

Per-and Polyfluorinated alkyl substances(PFAS)are a broad class of synthetic compounds that have fluorine substituted for hydrogen in several or all locations and are globally categorized as PFCs(perfluorochemicals;commonly called fluorinated chemicals).These compounds have unique chemical and physical properties that enable their use in non-stick surfaces,fire-fighting efforts,and as slick ***,recent concerns over the health effects of such compounds,specifically perfluorooctanoic acid and perfluorooctane sulfonic acid(PFOA,PFOS;PFOA/S),have led to increased attention and research by the global community into degradation *** this study,soil samples from PFAS-contamination sites were cultured and screened for microbes with PFOA/S degradation potential,which led to the identification of delftia *** was found that *** isolated from PFAS-contaminated soils was capable of growth in minimal media with PFOA as a sole carbon resource,and an observable fluoride concentration increase was observed when cells were exposed to *** suggests potential activity of a dehalogenase enzyme that may be of use in PFOA or PFAS microbial remediation *** associated haloacid dehalogenases have been identified in the *** genome and have been engineered for expression in Escherichia coli for rapid production and *** enzymes have shown potential for enzymatic defluorination,a significant step in biological degradation and removal of PFOA/S from the *** hypothesize that bioremediation of PFAS using naturally occurring microbial degradation pathways may represent a novel approach to remove PFAS contamination.

关键词： iGEM PFAS Bioremediation Bioengineering delftia acidovorans

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

将555定时器转换为脉宽调制器的模拟开关

电子设计技术 EdN CHINA 2007年第5期14卷 113-113页

作者： jordan dimitrov Tradeport Electronics VaughanON

本设计实例描述一种新方法．用一只基于555定时器的自激振荡器产生一个占空比可变波形。该电路有宽的调制范围．可在很宽的占空比值范围内作高度线性化控制．出色的线性使它最适合基于PWM（脉冲宽度调制）的控制应用。图1为基本电路．... 详细信息

本设计实例描述一种新方法．用一只基于555定时器的自激振荡器产生一个占空比可变波形。该电路有宽的调制范围．可在很宽的占空比值范围内作高度线性化控制．出色的线性使它最适合基于PWM（脉冲宽度调制）的控制应用。图1为基本电路．工作原理如下：当IC1的输出为高电平时．开关S、闭合．而IC1的内部放电开关S2打开。电容器C1通过R1和R2充电。当IC1输出为低电平时．S1打开．而S2闭合．C1通过R2和R3放电。

关键词： 555定时器脉宽调制器模拟开关线性化控制脉冲宽度调制基本电路放电开关自激振荡器

在线全文

学校读者我要写书评

暂无评论

有良好线性和动态范围的廉价VFC

电子设计技术 EdN CHINA 2012年第3期19卷 66-66页

作者： jordan dimitrov 不详

已故模拟专家Bob Pease和Jim Williams都喜欢用VFC（电压-频率转换器）电路（参考文献1-5）。本设计是献给他们的一种低价而高性能的电路。从一家本地电子商店，只要花几美元就能买所有元件。

关键词： VFC 动态范围电压-频率转换器廉价线性参考文献电子商店 Bob

使电源电容快速放电的可再触发单稳态多谐振荡器

在线全文

学校读者我要写书评

暂无评论

电子设计技术 EdN CHINA 2008年第6期15卷 120-120页

作者： jordan dimitrov Tradeport Electronics VaughanONCanada

通用电源必须在电网供电为90V～264V交流电压,频率为50Hz或60Hz的情况下工作。直接将输入电压进行整流会使滤波电容充电到120V～370V的直流电压。对于电源研制或修理人员来说,这是一个很大的危险。所以,希望在电网电源切断时滤波电容的... 详细信息

通用电源必须在电网供电为90V～264V交流电压,频率为50Hz或60Hz的情况下工作。直接将输入电压进行整流会使滤波电容充电到120V～370V的直流电压。对于电源研制或修理人员来说,这是一个很大的危险。所以,希望在电网电源切断时滤波电容的电能够被放掉,使工作人员可以安全地处理电源。采用交流继电器是一个简单的解决方法，但继电器不能在宽输入电压范围内工作，并且会消耗较大的功率，占用较大的空间，而且继电器动作次数也有限。图1显示了一个替代电路，该电路几乎可用于任何电容值的电容。

关键词：电源切断电容充电多谐振荡器快速放电单稳态交流继电器触发电网供电