检索结果-南通市图书馆

spin squeezing in Dicke-class of states with non-orthogonal spinors

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2019年第6期28卷 66-71页

作者： k s Akhilesh k s Mallesh sudha Praveen G Hegde Department of Physics University of MysoreManasagangotriMysuru-570006KarnatakaIndia Department of Physics Kuvempu UniversityShankaraghattaShimoga-577451India Inspire Institute Inc. AlexandriaVirginia 22303USA

The celebrated Majorana representation is exploited to investigate spin squeezing in different classes of pure symmetric states of N qubits with two distinct spinors, namely the Dicke-class of states. On obtaining a general expression for spin squeezing parameter, the variation of squeezing for different configurations is studied in detail. It is shown that the states in the Dicke-class, characterized by two-distinct non-orthogonal spinors, exhibit squeezing.

关键词： Majorana representation of pure symmetric multiqubit states spin squeezing Dicke states

Impact of Zika virus non-structural protein mutations on hippocampal damage

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第8期20卷 2307-2308页

作者： Larissa M.G.Cassiano Roney s.Coimbra Neurogenômica/Imunopatologia Instituto RenéRachouFiocruzBelo HorizonteBrazil Departamento de Bioquímica e Imunologia Instituto de Ciências BiológicasUniversidade Federal de Minas GeraisBelo HorizonteBrazil

The Zika virus(ZIkV),a member of the Flaviviridae family,attracted worldwide attention for its connection to severe neurological effects,notably microcephaly in newborns,first reported during the 2015 epidemic in ***,its impact goes beyond fetal and neonatal abnormalities,also affecting the central nervous system(CNs)in both children and adults,leading to enduring cognitive and behavioral impairments.

关键词： damage fetal neonatal

Identification of ExpIdentification of Expressed Resistance Gene Analogs from Peanut (Arachis hypogaea L.) Expressed sequence Tags

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2013年第5期55卷 453-461页

作者： Zhanji Liu suping Feng Manish k. Pandey Xiaoping Chen albert k. Culbreath Rajeev k. Varshney Baozhu Guo University of Georgia Department of Plant Pathology shandong Academy of Agricultural sciences High-Tech Research Center Qiongzhou University College of Bioscience and Biotechnology International Crops Research Institute for the semi-Arid Tropics (ICRIsAT) Guangdong Academy of Agricultural sciences Crops Research Institute Us Department of Agriculture Agricultural Research ServiceCrop Protection and Management Research Unit

Low genetic diversity makes peanut （Arachis hypogaea L.） very vulnerable to plant pathogens, causing severe yield loss and reduced seed quality. several hundred partial genomic DNA sequences as nucleotide-binding-site leucine-rich repeat （NBs-LRR） resistance genes （R） have been identified, but a small portion with expressed transcripts has been found. We aimed to identify resistance gene analogs （RGAs） from peanut expressed sequence tags （EsTs） and to develop polymorphic markers. The protein sequences of 54 known R genes were used to identify homologs from peanut EsTs from public databases. A total of 1,053 EsTs corresponding to six different classes of known R genes were recovered, and assembled 156 contigs and 229 singletons as peanut-expressed RGAs. There were 69 that encoded for NBs-LRR proteins, 191 that encoded for protein kinases, 82 that encoded for LRR-Pk/transmembrane proteins, 28 that encoded for Toxin reductases, 11 that encoded for LRR-domain containing proteins and four that encoded for TM-domain containing proteins. Twenty-eight simple sequence repeats （ssRs） were identified from 25 peanut expressed RGAs. One ssR polymorphic marker （RGA121） was identified. Two polymerase chain reaction-based markers （Ahsw-1 and Ahsw-2） developed from RGA013 were homologous to the Tomato spotted Wilt Virus （TsWV） resistance gene. All three markers were mapped on the same linkage group AhIV. These expressed RGAs are the source for RGA-tagged marker development and identification of peanut resistance genes.

关键词： Arachis hypogaea expressed sequence tags resistance gene analogs Tomato spotted Wilt Virus.

synthesis of Pyrrole-Imidazole Polyamide

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2000年第3期11卷 207-208页

作者： Jun Hua XIAO Gu YUAN Wei Qiang HUANG Fei Li TANG albert s.C.CHAN k.L.Daniel LEE Bioorganic Molecular Engineering Laboratory Department of ChemistryPeking UniversityBeijing 100871 Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic UniversityHK

One simple and versatile method is established far the synthesis of DNA recognition molecules-polyamides containing alternating N-methylpyrrole and N-methylimidazole without necessitating NH2- group protection.

关键词： polyamides DNA recognition molecules pyrroles and imidazoles

Cleavable Cys labeling directed Lys site-selective stapling and single-site modification

在线全文

学校读者我要写书评

暂无评论

science China Chemistry 2022年第7期65卷 1356-1361页

作者： Jian Li Qi-Long Hu Zhendong song albert s.C.Chan Xiao-Feng Xiong Guangdong key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical SciencesSun Yat-sen UniversityGuangzhou 510006China

site-selective modification of peptide/protein is a vital approach to disclose post-translational modifications(PTMs) and plays a crucial role in chemical biology, as well as drug development. Compared with synthetic and chemical biology methods, chemical modification of native peptide/protein provides a more versatile approach to achieve late-stage diversification for functional studies. Lysine featured high nucleophilicity, frequency, and solvent accessibility, making its site-selective modification important but elusive. Herein, we reported a visible-light-driven and Cys-directed Lys site-selective stapling approach for peptide/protein. By cleavable Cys anchoring, site-selective Lys single-site modification was achieved, and this method could be applied to multi-functionalization.

关键词： lysine protein modification single-site modification stapling

同方期刊数据库

Transference of Love-type waves in a bedded structure containing a functionally graded material and a porous piezoelectric medium

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2019年第8期40卷 1083-1096页

作者： s.MONDAL s.A.sAHU k.k.PANkAJ Department of Applied Mathematics Indian Institute of Technology (ISM)

The frequency of the Love-type surface waves in a bedded structure con- sisting of a porous piezoelectric (PP) medium and a functionally graded material (FGM) substrate is approximated. The FGM layer is assumed to have a constant initial stress. The Wentzel-kramers-Brillouin (WkB) approximation technique is used for the wave solution in the FGM layer, and the method of separation of variables is applied for the solution in the porous piezoelectric medium. The dependence of the wave frequency on the wave number is obtained for both electrically open and short cases. The effects of the gradient coefficient of the FGM layer, the initial stresses (tensile stress and compressive stress), and the width of the FGM layer are marked distinctly and shown graphically. The findings may contribute towards the design and optimization of acoustic wave devices.

关键词： porous piezoelectric (PP) material functionally graded material (FGM) Love-type wave Wentzel-kramers-Brillouin (WkB) approximation

Ray Wu's Golden Rules:How he achieved greatness in work,and in life

在线全文

学校读者我要写书评

暂无评论

science China(Life sciences) 2009年第2期52卷 101-107页

作者： albert W. Wu Christina C. Wu Diana k. sugg Health Policy and Management at the Johns Hopkins Bloomberg school of Public Health

Overview When Ray Wu passed away on February 10, 2008, he was 79, working full-time in his lab at Cornell University, and was at or near the top of his long and noteworthy career. He had developed the first method for DNA sequencing and pioneered recombinant DNA technology. He had identified key genes related to stress tolerance in plants and was poised to apply these to boost crop yields of rice and

关键词： work Figure

Quantitative mineralogical characterization of chrome ore beneficiation plant tailing and its beneficiated products

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2015年第4期22卷 335-345页

作者： s.k.Das CsIR-Institute of Minerals and Materials Technology

Mineralogical characterization and liberation of valuable minerals are primary concerns in rnineml processing industries. The pre- sent investigation focuses on quantitative mineralogy, elemental deportment, and locking-liberation characteristics of the beneficiation of tailings from a chrome ore beneficiation plant in the sukinda region, Odisha; methods used for the study of the beneficiated tailings are QEMsCAN~, X-ray diffraction （XRD）, and mineral chemistry by a scanning electron microscope equipped with an energy-dispersive spec- trometer （sEM-EDs）. The tailing sample was fine grained （69.48wt% below 45 μm size）, containing 20.25wt% Cr203 and 39.19wt% Fe203, with a Cr：Fe mass ratio of 0.51. Mineralogical investigations using QEMsCAN studies revealed that chromite, goethite, and gibbsite are the dominant mineral phases with minor amounts of hematite, kaolinite, and quartz. The sample contained 34.22wt% chromite, and chromite liberation is more than 80% for grains smaller than 250 ~tm in size. Based on these results, it was predicted that liberated chromite and high-grade middling chromite particles could be separated from the gangue by various concentration techniques. The tailing sample was beneficiated by hydrocyclone, tabling, wet high-intensity magnetic separation （WHIMs）, and flotation in order to recover the chromite. A chromite concentrate with 45.29wt% Cr203 and a Cr：Fe mass ratio of 1.85 can be produced from these low-grade chromite ore beneficiation plant rejects.

关键词： tailings mineralogy chromites beneficiation

Influence of Cold Deformation on the Aging Behaviour of Al-Cu-si-Mg Alloy

在线全文

学校读者我要写书评

暂无评论

Journal of Materials science & Technology 2011年第3期27卷 193-198页

作者： s.k.Ghosh Department of Metallurgy and Materials Engineering Bengal Engineering and Science University

The present study deals with the effect of cold deformation and subsequent aging on the microstructure and mechanical properties of AI-Cu-si-Mg alloy. Differential scanning calorimetry indicates that precipitation occurs in the temperature range of 258-272℃ for the as quenched wrought alloy. The activation energy value estimated by kissinger method for the aforesaid precipitation reaction is obtained as 106 kJ/mol. 45% cold deformation prior to aging indicates the first dissolution reaction at about 50℃ and the precipitation reaction at a temperature of about 82℃. Microstructural investigations have revealed the formation of fine precipitates within the matrix after aging of the cold deformed sample. As-quenched alloy reveals prominently the aging response, The increase in hardness, yield and tensile strength with simultaneous decrease in elongation in the deformed alloy is found to be primarily due to the deformation strengthening and not due to the precipitation hardening.

关键词： Aluminium alloy Aging Cold deformation Differential scanning calorimetry kissinger method