检索结果-南通市图书馆

Quantum Teleportation of Tripartite Arbitrary State via W State

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

Communications in Theoretical Physics 2005年第6X期44卷 1021-1024页

作者： XUE Zheng-Yuan YI You-min CAO Zhuo-liang Anhui Key Laboratory of Information Material & Devices School of Physics & Material Science Anhui University Hefei 230039 China

A scheme of teleportation of a tripartite state via W state is suggested. The W state serves as quantum channels. Standard Bell-state measurements and Von Neumann measurements are performed. After the sender operates the measurements and informs the receiver her results, he can reconstruct the original state by the corresponding unitary transformation. The probability of the successful teleportation is also obtained.

关键词： teleportation entanglement W state unitary transformation

QuEChERS-UPLC-MS/MS快速测定茶叶中23种真菌毒素

在线全文

学校读者我要写书评

暂无评论

化学研究与应用 2024年第2期36卷 380-389页

作者：叶梦薇冯丽凤黄芊黄媛梁敏蔡小明国家加工食品质量监督检验中心福建省产品质量检验研究院福建福州350002

建立了QuEChERS(Quick、Easy、Cheap、Effective、Rugged、Safe)-超高效液相色谱-串联质谱法(Ultra-high-performance Liquid Chromatography-Tandem Mass Spectrometry,UPLC-MS/MS)快速测定茶叶中23种真菌毒素的分析方法。样品经过二次提取,十八烷基键合硅胶吸附剂(C_(18))净化,以ACQUITY UPLC^(TM)BEH C_(18)色谱柱分离,采用超高效液相色谱-质谱多反应监测(MRM)模式进行检测,外标法定量。在优化的条件下,23种真菌毒素在各自的线性响应范围内线性关系良好,相关系数(r^(2))均大于0.995,在五种茶叶基质的三个不同加标水平下平均回收率为70.2%~112%,相对偏差(RSD)为1.50%~11.6%(n=6),方法检出限为0.02~9.08μg·kg^(-1)。此方法具有分析速度快、稳定性好、灵敏度高的特点,能够满足5大类茶叶中23种真菌毒素的快速检测需求。

关键词：茶叶真菌毒素 QuEChERS UPLC-MS/MS

An analysis of the mechanism underlying photocatalytic disinfection based on integrated metabolic networks and transcriptional data

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2020年第6期32卷 28-37页

作者： Xiao-Long liang Zhan-min liang Shuo Wang Xiao-Hui Chen Yao Ruan Qing-Ye Zhang Hong-Yu Zhang Hubei Key Laboratory of Agricultural Bioinformatics College of InformaticsHuazhong Agricultural UniversityWuhan430070PR China

Photocatalytic disinfection has long been used to combat pathogenic ***,the specific mechanism underlying photocatalytic disinfection and its corresponding targets remain *** this study,an analysis of the potential mechanism underlying photocatalytic disinfection was performed based on integrated metabolic networks and transcriptional *** sets of RNA-seq data(wild type and a photocatalysis-resistant mutant mediated by titanium dioxide(TiO2))were processed to constrain the genome scale metabolic models(GSMM)of *** analyzing the metabolic network,the differential metabolic flux of every reaction was computed in constrained GSMM,and several significantly differential metabolic fluxes in reactions were extracted and *** of these reactions were involved in the transmembrane transport of substances and occurred on the inner membrane or were an important component of the cell *** results,which are consistent with the reported information,validated our analysis *** addition,our work also identified other new and valuable metabolic pathways,such as the reaction ALCD2x,which has a great effect on the energy production process under bacterial anaerobic *** DHAK reaction is also related to the metabolic process of *** reactions with large differential metabolic fluxes merit further ***,to provide a strategy to address photocatalysis-resistant mutant bacteria,a metabolic compensation analysis was also *** metabolic compensation analysis results provided suggestions for a combined method that can effectively combat resistant *** method could also be used to explore the mechanisms of drug resistance in other microorganisms.

关键词： Photocatalytic disinfection Genome scale metabolic models(GSMM) RNA-seq analysis Mechanism Metabolic compensation

Sequential One-Pot Three-Enzyme Synthesis of the Tetrasaccharide Repeating Unit of Group B Streptococcus Serotype Ⅷ Capsular Polysaccharide

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemistry 2022年第9期40卷 1039-1044页

作者： min liang Wei Gong Chongzhen Sun Jielin Zhao Hong Wang Zonggang Chen min Xiao Guofeng Gu National Glycoengineering Research Center Shandong Provincial Key Laboratory of Carbohydrate Chemistry and GlycobiologyShandong University72 Binhai RoadQingdaoShandong 266237China School of Pharmaceutical Science Shandong University44 West Wenhua RoadJinanShandong 250012China NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate-based Medicine Shandong UniversityQingdaoShandong 266237china

The biochemical property and functional identification of three recombinant glycosyltransferases,includingβ-1,4-rhamnosyltransferase(Cps8R),β-1,4-galactosyltransferase(Cps8) and α-2,3-sialyltransferase(Cps8K)involved in the biosynthesis of the tetrasaccharide repeating unit of serotypeⅧcapsular polysaccharide(CPS)of Group B Streptococci(GBS),were systematically ***,these recombinant enzymes were employed for one-pot three-enzyme efficient synthesis of the tetrasaccharide repeating unit of GBS serotypeⅧCPS using the chemically synthesized Glca-PP-(CH2)ir-OPh as the starting substrate in a satisfying yieldof 87%.

关键词： Streptococcus agalactiae Capsular polysaccharide Oligosaccharides Enzyme catalysis Biosynthesis

Variational quantum algorithms for trace norms and their applications

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

Communications in Theoretical Physics 2021年第10期73卷 90-96页

作者： Sheng-Jie Li Jin-min liang Shu-Qian Shen ming Li College of Science China University of Petroleum266580 QingdaoChina School of Mathematical Sciences Capital Normal University100048 BeijingChina

The trace norm of matrices plays an important role in quantum information and quantum computing. How to quantify it in today’s noisy intermediate scale quantum(NISQ) devices is a crucial task for information processing. In this paper, we present three variational quantum algorithms on NISQ devices to estimate the trace norms corresponding to different *** with the previous methods, our means greatly reduce the requirement for quantum resources. Numerical experiments are provided to illustrate the effectiveness of our algorithms.

关键词： quantum algorithm trace norm variational algorithm

长期时效处理对21-4NWNb钢组织与性能的影响

在线全文

学校读者我要写书评

暂无评论

金属热处理 2024年第7期49卷 78-84页

作者：赵守忠王守乾朱治愿闵亮徐超凡沈佳宝江苏科技大学材料科学与工程学院江苏镇江212000

研究了经过标准热处理(1050℃×30 min+750℃×4 h)的21-4NWNb钢在750℃长期时效过程中的组织转变和力学性能变化情况。结果表明,长期时效过程中21-4NWNb钢的晶粒尺寸变化不明显,时效200 h时,组织中分布有少量规则块状M_(23)C_(6)型碳化... 详细信息

研究了经过标准热处理(1050℃×30 min+750℃×4 h)的21-4NWNb钢在750℃长期时效过程中的组织转变和力学性能变化情况。结果表明,长期时效过程中21-4NWNb钢的晶粒尺寸变化不明显,时效200 h时,组织中分布有少量规则块状M_(23)C_(6)型碳化物,时效500 h以后,晶内逐渐出现σ相(AB)。21-4NWNb钢硬度在200 h时最高为324 HV,最大抗拉强度为971 MPa,伸长率为22.2%。时效200 h以后,随着时效时间的延长,其硬度和抗拉强度均表现为逐渐下降的趋势;时效2000 h后钢的伸长率降至15%以下。

关键词： 21-4NWNb钢长期时效 σ相

Review and comparison of methods and benchmarks for automatic modal identification based on stabilization diagram

在线全文

学校读者我要写书评

暂无评论

Journal of Traffic and Transportation Engineering(English Edition) 2024年第2期11卷 209-224页

作者： min He Peng liang Jiuxian Liu Zhiqiang liang School of Architecture and Civil Engineering Xi'an University of Science and TechnologyXi'an 710064China School of Highway Chang'an UniversityXi'an 710064China

Automatic modal identification via automatically interpreting the stabilization diagram provides key technique in bridge structural health *** paper reviews the progress in the area of automatic modal identification based on interpreting the stabilization *** whole identification process is divided into four steps from establishing the stabilization diagram to removing the outliers in the identification *** criteria and algorithms used in each step in the existing studies are carefully summarized and *** between typical methods in cleaning and interpreting the stabilization diagram are also *** structure benchmarks used in the existing studies to validate the proposed automatic modal identification methods are also *** on the review and comparison,the specific ratio method for cleaning the stabilization diagram,the hierarchical clustering method for interpreting the stabilization diagram and the adjusted boxplot for removing the outliers in the identification results are the most suitable methods for each *** key point of automatic modal identification based on interpreting the stabilization diagram has also discussed,and it is recommended to pay more attention to cleaning the stabilization *** study about automatic modal identification under situation with very few sensors deployed should be more *** review aims to help researchers and practitioners in implementing existing automatic modal identification algorithms effectively and developing more suitable and practical methods for civil engineering structures in the future.

关键词： Bridge structural health monitoring Automatic modal identification Stabilization diagram Eriteria and methods Real structure benchmarks

Mutually Pumped Phase-Conjugate Mirror: Sickle Configuration

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1996年第9期13卷 678-681页

作者： ZHANG liang-min ZHANG Jing-wen SHAO Zong-shu MU Xiao-dong CHEN Huan-chu JIANG min-hua National Laboratory of Crystal Materials Shandong UniversityJinan 250100

A mutually pumped phase conjugator is demonstrated with a novel photorefractive crystal of copper-doped potassium sodium strontium barium niobate,in which the beams travel in a geometric path similar to the outline of a *** maximum reflectivity is up to 168%.Faster response times are measured and are also simulated as a function of incident beam power *** available input geometries are *** phase conjugation signals exist wide range of angular and positional *** apparent cross talk is *** faster build-up process of phase conjugation beams is tentatively explained.

关键词： pumped Configuration mutually

Modular Design of Adaptive Robust Controller for a Class of Stochastic Nonlinear Systems

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

Modular Design of Adaptive Robust Controller for a Class of ...