检索结果-南通市图书馆

Heterogeneously integrated,superconducting silicon-photonic platform for measurementdevice-independent quantum key distribution

引用

Advanced Photonics 2021年第5期3卷 28-35页

作者： xiaodong zheng Peiyu Zhang Renyou Ge Liangliang Lu Guanglong He Qi Chen Fangchao Qu Labao Zhang Xinlun Cai Yanqing Lu Shining Zhu Peiheng Wu Xiao-Song Ma Nanjing University National Laboratory of Solid-state MicrostructuresSchool of PhysicsResearch Institute of Superconducting ElectronicsSchool of Electronic Science and EngineeringCollege of Engineering and Applied SciencesCollaborative Innovation Center of Advanced MicrostructuresNanjingChina Sun Yat-sen University State Key Laboratory of Optoelectronic Materials and TechnologiesSchool of Electronics and Information TechnologyGuangzhouChina

Integrated photonics provides a route to both miniaturization of quantum key distribution(QKD)devices and enhancing their performance.A key element for achieving discrete-variable QKD is a singlephoton *** is highly desirable to integrate detectors onto a photonic chip to enable the realization of practical and scalable quantum *** realize a heterogeneously integrated,superconducting silicon-photonic *** the unique high-speed feature of our optical waveguide-integrated superconducting detector,we perform the first optimal Bell-state measurement(BSM)of time-bin encoded qubits generated from two independent *** optimal BSM enables an increased key rate of measurement-device-independent QKD(MDI-QKD),which is immune to all attacks against the detection system and hence provides the basis for a QKD network with untrusted *** with the timemultiplexed technique,we have enhanced the sifted key rate by almost one order of *** a 125-MHz clock rate,we obtain a secure key rate of 6.166 kbps over 24.0 dB loss,which is comparable to the state-of-the-art MDI-QKD experimental results with a GHz clock *** with integrated QKD transmitters,a scalable,chip-based,and cost-effective QKD network should become realizable in the near future.

关键词： quantum key distribution hybrid photonics single-photon detector Bell-state measurement time-multiplexing

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

On the Occurrence Time of an Earthquake Cluster in the Shanxi Reservoir

引用

Earthquake Research in China 2006年第4期20卷 406-411页

作者： Niu Anfu Zhang xiaodong zheng Dalin Li Xiaofan Ji Ping China Earthquake Networks Center CEABeijing 100036 China

An earthquake cluster occurred in the Shanxi reservoir, located around Wenzhou city in Zbejiang Province. From February 4 to February 11, 2006, 9 earthquakes with ML ≥ 4.0 occurred, and the greatest magnitude was ML4.6. The correlations of earthquake occurrence time with reservoir level changes and tides are discussed, and the possible factors that induced the reservoir earthquakes and the trend of seismic activity are analyzed based on the characteristics of earthquake occurrence time. Finally, we suggest that it is necessary to slow down the speed of storing water and to maintain a level below the highest historical level to avoid greater earthquakes in the reservoir.

关键词： Shanxi reservoir Water level Earthquake cluster Solid tide

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

多边形棒状透镜出端辐射均匀性的研究

引用

光子学报 2006年第12期35卷 1964-1968页

作者：金新华郑晓东王政浙江大学现代光学仪器国家重点实验室浙江大学光及电磁波研究中心杭州310027 Shibuya OpticsInc.

研究了用多角形棒状透镜产生高均匀性正方形和圆形照明的最佳结构参量·结果表明,对于正方形棒状透镜,输出端的照明均匀性随透镜的长度振荡变化,在某些特定长度达到极小值·对于圆形照明面积,比较了从三角到八角的六种多边形·利用三角... 详细信息

研究了用多角形棒状透镜产生高均匀性正方形和圆形照明的最佳结构参量·结果表明,对于正方形棒状透镜,输出端的照明均匀性随透镜的长度振荡变化,在某些特定长度达到极小值·对于圆形照明面积,比较了从三角到八角的六种多边形·利用三角形积分透镜可以获得最佳的照明均匀性,但光能利用率相对较低,六角形积分透镜可同时获得较高的照明均匀性和光能利用率·

关键词：积分透镜照明系统均匀性多角形

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Identi?cation and Analysis of the Intermediates from Photodegradation of 3,3′-diamino-4,4′-azoxyfurazan (DAAF)by SERS and HPLC–MS/MS

引用

Journal of Analysis and Testing 2024年第3期8卷 351-360页

作者： Qi Wu Zhenqi Zhang Wenxu zheng Juan Li Nan Ma Rui Li Bo Yang Weimiao Wang xiaodong Li Meikun Fan Faculty of Geosciences and Environmental Engineering Southwest Jiaotong University Institute of Chemical Materials China Academy of Engineering Physics College of Materials and Energy South China Agricultural University Southwest University of Science and Technology

Understanding the structural changes and degradation mechanisms of organic pollutants is critical in environmental *** this work, a xenon lamp was used as an analog light source to simulate the eff ect of sunlight on 3,3′-diamino-4,4′-azoxyfurazan (DAAF) in aqueous solution. Combining high-performance liquid chromatography coupled with tandem mass spectrometry (HPLC–MS/MS), surface-enhanced Raman spectroscopy (SERS) with density functional theory (DFT), the degradation intermediates and mechanisms of DAAF were investigated. The sequential breakdown of the–NH 2and–O–N=bonds, followed by the removal of atomic O from–N=N(O)–, was emphasized and investigated using two-dimensional correlation spectroscopy (2D-COS) and SERS spectra. Three intermediates with mass-to-charge ratios (m/z) 181, 251 and180 were identifi ed and characterized by integrating experimental SERS data with DFT-calculated Raman spectra based on structures hypothesized from MS spectra. The fi ndings from HPLC–MS and SERS not only corroborate each other but also provide a foundation for a detailed examination of the DAAF degradation process.

关键词： DAAF High-performance liquid chromatography coupled with tandem mass spectrometry (HPLC–MS/MS) Photodegradation products Reaction pathways Surface-enhanced Raman spectroscopy (SERS)

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Tetrastigma hemsleyanum flavones exert antihepatic carcinoma property both in vitro and in vivo

引用

Food Quality and Safety 2021年第4期5卷 398-411页

作者： Yangyang Liu Yonglu Li Wen Chen Xiang Ye Ruoyi Jia Lushuang Yu Qiong Tang Pengcheng Tu Yong Jiang Qiang Chu xiaodong zheng Department of Food Science and Nutrition Zhejiang Key Laboratory for Agro-food ProcessingFuli Institute of Food ScienceZhejiang UniversityHangzhouChina Shanghai zhengyue Enterprise Management Co. Ltd.ShanghaiChina School of Materials Science and Engineering State Key Laboratory of Silicon MaterialsZhejiang UniversityHangzhouChina

Tetrastigma hemsleyanum(***)has been regarded as an anticancer food in ***,its corresponding mechanisms remains ***,in this study,the antitumor activity of flavones-rich fraction of root of ***(FRTH)was investigated in vitro and in *** results indicated that FRTH could inhibit the proliferation and migration of human hepatoellular carcinomas(HepG2)cells in vitro by the phosphatidylinositol 3-kinase/protein kinase B(PI3K/AKT)*** could increase the level of reactive oxygen species and change the mitochondrial membrane potential in HepG2 *** addition,FRTH treatment(300 mg/kg and 600 mg/kg,body weight)significantly suppressed tumor growth on HepG2 tumor-bearing nude ***,immunohistochemistry assays and western blotting revealed that FRTH enhanced the expression level of Bcl-2 associated X protein/B-cell lymphoma-2(Bax/Bcl-2),cytochrome C,caspase-3,caspase-9,and cleaved-caspase-3,and downregulated the expression level of platelet endothelial cell adhesion molecule-1(CD31),ki67,and vascular endothelial growth factor(VEGF)factor in HepG2 tumor-bearing *** study suggests *** as a kind of promising candidate medicine for liver cancer treatment.

关键词： Tetrastigma hemsleyanum human hepatoellular carcinomas(HepG2) flavone antitumor apoptosis

来源：

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

不同西洋梨品种果实糖酸组分及含量分析

引用

青岛农业大学学报（自然科学版） 2024年第2期41卷 79-86,115页

作者：郭可欣孙志娟李庆余韩磊张勇王彩虹田义轲郑晓东青岛农业大学园艺学院山东青岛266109 烟台市农业科学研究院山东烟台265500

为了给梨果实综合评价及产业品种结构调整提供理论依据,以烟台市十个代表性果园三个西洋梨品种(‘巴梨’‘三季梨’和‘红茄梨’)为研究对象,采用高效液相色谱法(HPLC)测定果实中可溶性糖和有机酸的组分及含量。研究结果表明:在三个西... 详细信息

为了给梨果实综合评价及产业品种结构调整提供理论依据,以烟台市十个代表性果园三个西洋梨品种(‘巴梨’‘三季梨’和‘红茄梨’)为研究对象,采用高效液相色谱法(HPLC)测定果实中可溶性糖和有机酸的组分及含量。研究结果表明:在三个西洋梨品种中,总糖含量和甜度值最高的是‘红茄梨’,‘三季梨’次之,‘巴梨’的总糖含量最少;三种西洋梨成熟果实可溶性糖积累以葡萄糖和果糖为主,可溶性糖含量由高到低为葡萄糖>果糖>山梨醇>蔗糖;另外,三种西洋梨果实总酸含量差异不显著,有机酸积累以柠檬酸和苹果酸为主,这两种酸占有机酸总量的90%左右;‘红茄梨’甜酸比和糖酸比最高,显著高于‘巴梨’,与‘三季梨’差异不显著。综上所述,‘红茄梨’糖酸风味优异,可作为烟台地区西洋梨产业结构调整的备选推广品种。

关键词：西洋梨可溶性糖有机酸甜酸比糖酸比

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

MdWRKY11 improves copper tolerance by directly promoting the expression of the copper transporter gene MdHMA5

引用

Horticulture Research 2020年第1期7卷 1459-1468页

作者： Kun Shi Xuan Liu Yunpeng Zhu Yixue Bai Dongqian Shan xiaodong zheng Lin Wang Haixia Zhang Chanyu Wang Tianci Yan Fangfang Zhou Zehui Hu Yanzhao Sun Yan Guo Jin Kong College of Horticulture China Agricultural University100193 BeijingChina College of Biological Sciences China Agricultural University100193 BeijingChina

Overuse of fungicides and fertilizers has resulted in copper(Cu)contamination of soils and toxic levels of Cu in apple *** breed Cu-resistant apple(Malus domestica)cultivars,the underlying molecular mechanisms and key genes involved in Cu resistance must be ***,we show that MdWRKY11 increases Cu tolerance by directly promoting the transcription of ***5 is a Cu transporter that may function in the storage of excess Cu in root cell walls and stems for Cu tolerance in *** transcription factor MdWRKY11 is highly induced by excess ***11 overexpression in transgenic apple enhanced Cu tolerance and decreased Cu *** calli transformed with an MdWRKY11-RNAi construct exhibited the opposite *** an in vivo chromatin immunoprecipitation assay and an in vitro electrophoretic mobility shift assay indicated that MdWRKY11 binds to the promoter of ***,MdWRKY11 promoted MdHMA5 expression in transgenic apple plants,as revealed by quantitative ***,inhibition of MdWRKY11 expression by RNA interference led to a significant decrease in MdHMA5 ***,MdWRKY11 directly regulates MdHMA5 *** work resulted in the identification of a novel MdWRKY11-MdHMA5 pathway that mediates Cu resistance in apple.

关键词： copper walls transformed

来源：

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

Large‑scale transcriptomic and genomic analyses reveal a novel functional gene SERPINB6 for chicken carcass traits

引用

Journal of Animal Science and Biotechnology 2024年第4期15卷 1466-1481页

作者： Di Zhao Ranran Liu xiaodong Tan Huimin Kang Jie Wang zheng Ma Haiquan Zhao Hai Xiang zhengfen Zhang Hua Li Guiping Zhao Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding School of Life Science and EngineeringFoshan UniversityFoshanChina State Key Laboratory of Animal Biotech Breeding Institute of Animal SciencesChinese Academy of Agricultural SciencesBeijingChina Guangdong Tinoo’s Foods Group Co. Ltd.QingyuanChina

Background Carcass traits are crucial indicators of meat production ***,the molecular regulatory mechanisms associated with these traits remain *** In this study,we conducted comprehensive transcriptomic and genomic analyses on 399 Tiannong partridge chickens to identify key genes and variants associated with carcass traits and to elucidate the underlying regulatory *** on association analyses with the elastic net(EN)model,we identified 12 candidate genes(AMY1A,AP3B2,CEBPG,EEF2,EIF4EBP1,FGFR1,FOXD3,GOLM1,LOC107052698,PABPC1,SERPINB6 and TBC1D16)for 4 carcass-related traits,namely live weight,dressed weight,eviscerated weight,and breast muscle ***6 was identified as the only overlapping gene by 3 analyses,EN model analysis,weighted gene co-expression network analysis and differential expression ***-level experiments confirmed that SERPINB6 promotes the proliferation of chicken DF1 cells and primary *** expression genome-wide association study and association analysis indicated that rs317934171 is the critical site that enhances SERPINB6 ***,a dual-luciferase reporter assay proved that gga-miR-1615 targets the 3′UTR of *** Collectively,our findings reveal that SERPINB6 serves as a novel gene for chicken carcass traits by promoting fibroblast and myoblast ***,the downstream variant rs317934171 regulates SERPINB6 *** results identify a new target gene and molecular marker for the molecular mechanisms of chicken carcass traits.

关键词： Carcass traits Chicken Genome SERPINB6 Transcriptome

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

***2 regulates plant height by affecting the main inflorescence length and first effective branch height in Brassica napus L.

引用

The Crop Journal 2024年第4期12卷 1102-1111页

作者： Chengke Pang Jun Yu Liang Zhang Min Tang Hongfang Liu Ying Cai Feng Chen Jiefu Zhang Wei Hua xiaodong Wang Ming zheng Oil Crops Research Institute of the Chinese Academy of Agricultural Sciences Key Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of Agriculture and Rural AffairsWuhan 430062HubeiChina Key Laboratory of Cotton and Rapeseed Ministry of Agriculture and Rural AffairsKey Laboratory of Jiangsu Province for AgrobiologyInstitute of Industrial CropsJiangsu Academy of Agricultural SciencesNanjing 210014JiangsuChina National Key Laboratory of Crop Genetic Improvement Huazhong Agricultural UniversityWuhan 430070HubeiChina

Rapeseed(Brassica napus L.)is one of the main oil crops in the world,and increasing its yield is of great significance for ensuring the safety of edible ***,improving rapeseed plant architecture is an effective way to increase rapeseed yield with higher planting ***,the regulatory mechanism of rapeseed plant architecture is poorly *** this study,a dwarf rapeseed mutant dwarf08(df08)is obtained by ethyl methane sulfonate(EMS)-*** decrease in plant height of df08 is mainly caused by the reduction in main inflorescence length and first effective branch height and controlled by a single semi-dominant *** hybrid plants(F1)show a semi-dwarf *** map-based cloning and transgenic assay,we confirm that the nonsynonymous single nucleotide variant(SNV)(C to T)in ***2,which is homologous with Arabidopsis(Arabidopsis thaliana)BIN2,is responsible for the dwarfism of ***2 interacts with BnaBZR1/BES1 and involves in brassinosteroids(BRs)signal *** to Leucine substitution in 284(P284L)enhances the protein stability of ***2-D,disrupts BRs signal transduction and affects the expression of genes regulating cell division,leading to dwarfism of *** study provides a new insight for the mechanism of rapeseed plant height regulation and creates an elite germplasm that can be used for genetic improvement of rapeseed architecture.

关键词： Brassica napus Plant height Brassinosteroids BIN2

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

几丁质对海洋拮抗酵母防治梨果实采后青霉病的影响

引用

中国食品学报 2016年第2期16卷 151-158页

作者：卢黄娉郑晓冬浙江大学食品科学与营养系浙江农产品加工重点实验室馥莉食品研究院杭州310058

本文研究几丁质对海洋酵母防治由扩展青霉引起的梨果实采后青霉病的影响,结果表明,几丁质诱导培养能够显著增强海洋酵母在室温(25℃)和冷藏(4℃)条件下对扩展青霉的拮抗效力,并可促进其在梨果实伤口处的生长。几丁质诱导培养的酵母处理... 详细信息

本文研究几丁质对海洋酵母防治由扩展青霉引起的梨果实采后青霉病的影响,结果表明,几丁质诱导培养能够显著增强海洋酵母在室温(25℃)和冷藏(4℃)条件下对扩展青霉的拮抗效力,并可促进其在梨果实伤口处的生长。几丁质诱导培养的酵母处理后梨果实的多酚氧化酶活性显著高于未经诱导的酵母处理,且丙二醛含量也显著降低。此外,几丁质诱导培养对海洋酵母的细胞结构没有影响。在普通培养基中添加几丁质是提高海洋酵母生防效力的有效途径。

关键词：海洋酵母扩展青霉梨果实几丁质生物防治

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：