检索结果-南通市图书馆

Genetic and histological relationship between pheromone-secreting tissues of the musk gland and skin of juvenile Chinese forest musk deer(Moschus berezovskii Flerov,1929)

引用

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2023年第9期24卷 807-822页

作者： Long LI Heran CAO Jinmeng YANG Tianqi JIN yuxuan ma Yang WANG Zhenpeng LI Yining CHEN Huihui GAO Chao ZHU Tianhao YANG Yalong DENG Fangxia YANG Wuzi DONG College of Animal Science and Technology Northwest A&F UniversityYangling712100China College of Forestry Northwest A&F UniversityYangling712100China Biology Research Centre of Qin Mountains Wildlife Northwest A&F UniversityYangling712100China

Background The musk glands of adult male Chinese forest musk deer(Moschus berezovskii Flerov,1929)(FMD),which are considered as special skin glands,secrete a mixture of sebum,lipids,and proteins into the musk ***,these components form musk,which plays an important role in attracting females during the breeding ***,the relationship between the musk glands and skin of Chinese FMD remains ***,the musk gland and skin of Chinese FMD were examined using histological analysis and RNA sequencing(RNA-seq),and the expression of key regulatory genes was evaluated to determine whether the musk gland is derived from the *** A comparative analysis of musk gland anatomy between juvenile and adult Chinese FMD was ***,based on the anatomical structure of the musk gland,skin tissues from the abdomen and back as well as musk gland tissues were obtained from three juvenile *** tissues were used for RNA-seq,hematoxylin-eosin(HE)staining,immunohistochemistry(IHC),western blot(WB),and quantitative real-time polymerase chain reaction(qRT-PCR)*** Anatomical analysis showed that only adult male FMD had a complete glandular organ and musk pod,while juvenile FMD did not have any well-developed musk *** data revealed that 88.24%of genes were co-expressed in the skin and musk gland *** Encyclopedia of Genes and Genomes(KEGG)signaling pathway analysis found that the genes co-expressed in the abdomen skin,back skin,and musk gland were enriched in biological development,endocrine system,lipid metabolism,and other *** Ontology(GO)enrichment analysis indicated that the genes expressed in these tissues were enriched in biological processes such as multicellular development and cell ***,the Metascape predictive analysis tool demonstrated that genes expressed in musk glands were skin ***-PCR and WB revealed that sex-determining region Y-box protein 9(Sox9),Caveoli

关键词： Forest musk deer Pheromones Musk gland Skin tissues Transcriptome Sebaceous gland

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

Low Resource Chinese Geological Text Named Entity Recognition Based on Prompt Learning

引用

Journal of Earth Science 2024年第3期35卷 1035-1043页

作者： Hang He Chao ma Shan Ye Wenqiang Tang yuxuan Zhou Zhen Yu Jiaxin Yi Li Hou Mingcai Hou State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Institute of Sedimentary GeologyCollege of Computer Science and Cyber SecurityChengdu University of TechnologyChengdu 610059China Key Laboratory of Deep-Time Geography and Environment Reconstruction and Applications of Ministry of Natural Resources Chengdu University of TechnologyChengdu 610059China School of Information Engineering China University of Geosciences(Beijing)Beijing 100083China

Geological reports are a significant accomplishment for geologists involved in geological investigations and scientific research as they contain rich data and textual *** the rapid development of science and technology,a large number of textual reports have accumulated in the field of ***,many non-hot topics and non-English speaking regions are neglected in mainstream geoscience databases for geological information mining,making it more challenging for some researchers to extract necessary information from these *** Language Processing(NLP)has obvious advantages in processing large amounts of textual *** objective of this paper is to identify geological named entities from Chinese geological texts using NLP *** propose the RoBERTa-Prompt-Tuning-NER method,which leverages the concept of Prompt Learning and requires only a small amount of annotated data to train superior models for recognizing geological named entities in low-resource dataset *** RoBERTa layer captures context-based information and longer-distance dependencies through dynamic word ***,we conducted experiments on the constructed Geological Named Entity Recognition(GNER)*** experimental results show that the proposed model achieves the highest F1 score of 80.64%among the four baseline algorithms,demonstrating the reliability and robustness of using the model for Named Entity Recognition of geological texts.

关键词： Prompt Learning Named Entity Recognition(NER) low resource geological text text information mining big data geology.

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

High contrast linking six lasers to a 1 GHz Yb:fiber laser frequency comb

引用

Chinese Optics Letters 2019年第4期17卷 62-65页

作者： yuxuan ma Fei Meng Yan Wang Aimin Wang Zhigang Zhang State Key Laboratory of Advanced Optical Communication System and Networks School of Electronics Engineering and Computer Science Peking University National Institute of Metrology

We demonstrate a 0.95 GHz repetition rate fully stabilized Yb:fiber frequency comb without optical amplification. Benefitting from the high mode power and high coherence, this comb achieved 35 to 42 dB signal to noise ratio on the direct heterodyne beat signals with at least six continuous wave lasers(at 580, 679, 698, 707, 813, and922 nm) while keeping >40 dB carrier envelope frequency signal. It can be used for the direct measurement of optical frequencies at visible and near-infrared wavelengths and has great potential on simultaneous comparison of multiple optical frequencies.

关键词： 0.95 GHz power and high coherence optical frequencies

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

基于肠道菌群探究针刺对抑郁症的干预作用

引用

针灸临床杂志 2024年第7期40卷 96-99页

作者：王伽松马育轩方芳龙宇郭媛琦李禹洋应雨校陶文轩周乔木黑龙江中医药大学黑龙江哈尔滨150040

抑郁症为慢性复发性精神疾病,针刺治疗抑郁症的疗效较好,症状可得到明显改善。研究表明,抑郁症的发病与肠道菌群有很高的相关性,而针刺治疗则可以减轻患者对空肠黏膜屏障的损害,恢复肠道菌群的多样性及丰度,达到治疗抑郁症的效果。本研... 详细信息

抑郁症为慢性复发性精神疾病,针刺治疗抑郁症的疗效较好,症状可得到明显改善。研究表明,抑郁症的发病与肠道菌群有很高的相关性,而针刺治疗则可以减轻患者对空肠黏膜屏障的损害,恢复肠道菌群的多样性及丰度,达到治疗抑郁症的效果。本研究主要基于肠道菌群角度探究针刺治疗抑郁症的作用机制,为进一步探究针刺治疗抑郁症的作用提供参佐。

关键词：抑郁症肠道菌群针刺

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

Experimental Study on Tilt Adjustment Technique of Tripod Bucket Jacket Foundation for Offshore Wind Turbine in Sand

引用

Journal of marine Science and Application 2022年第4期21卷 192-204页

作者： Puyang Zhang yuxuan ma Conghuan Le Hongyan Ding State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin UniversityTianjin 300072China School of Civil Engineering Tianjin UniversityTianjin 300072China

For the tripod bucket jacket foundations used in offshore wind turbines, the probable critical tilt angles should be avoidedduring tilt adjustment operation. Thus, these critical values must be identified by engineers, and remedial techniques mustbe established prior to the occurrence of the problem. Model tests were carried out for typical tilting conditions of tripodbucket foundations, which were allowed to tilt freely at various penetration depths without interruption by manualoperation. After the foundation ceased its tilting, some measures, such as water pumping, water injection, air injection, or acombination of the above methods, were enabled for adjustment. The research results showed two critical values in thetilting state of the tripod bucket jacket foundation, namely the terminal and allowable angles. In the installation condition,the terminal angle was negatively correlated with the initial penetration depth, but the opposite was observed with theremoval condition. The allowable angle was less than or equal to the terminal angle. The allowable angle in the installationwas related to the terminal angle. The critical angles all varied linearly with the initial penetration depth. When tiltingduring installation, adjustment measures can be used in the order of high drum pumping, low drum water injection, highdrum pumping and low drum water injection, air injection, and exhaust. When tilting during removal, the sequential use oflow drum water injection, air, and exhaust was applied. For buckets that were sensitive to angle changes, adjustmentmeasures of the “point injection” mode can be selected.

关键词： Tripod bucket jacket foundation Tilt adjustment Penetration and removal Terminal angle Allowable angle Offshore wind turbine

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

Design of pH-responsive antimicrobial peptide melittin analog-camptothecin conjugates for tumor therapy

引用

Asian Journal of Pharmaceutical Sciences 2024年第1期19卷 135-146页

作者： Sujie Huang yuxuan Gao Ling ma Bo Jia Wenhao Zhao Yufan Yao Wenyuan Li Tongyi Lin Rui Wang Jingjing Song Wei Zhang Institute of Pharmacology School of Basic Medical SciencesLanzhou UniversityLanzhou 730000China Key Laboratory of Preclinical Study for New Drugs of Gansu Province School of Basic Medical Sciences&Research Unit of Peptide ScienceChinese Academy of Medical SciencesLanzhou UniversityLanzhou 730000China State Key Laboratory of Veterinary Etiological Biology College of Veterinary MedicineLanzhou UniversityLanzhou 730000China Lanzhou University Second Hospital Lanzhou UniversityLanzhou 730000China

Melittin,a classical antimicrobial peptide,is a highly potent antitumor ***,its significant toxicity seriously hampers its application in tumor *** this study,we developed novel melittin analogs with pH-responsive,cell-penetrating and membranelytic activities by replacing arginine and lysine with *** conjugation with camptothecin(CPT),CPT-AAM-1 and CPT-AAM-2 were capable of killing tumor cells by releasing CPT at low concentrations and disrupting cell membranes at high concentrations under acidic ***,we found that the C-terminus of the melittin analogs was more suitable for drug conjugation than the ***-AAM-1 significantly suppressed melanoma growth in vivo with relatively low ***,the present study demonstrates that the development of antitumor drugs based on pH-responsive antimicrobial peptide-drug conjugates is a promising strategy.

关键词： Antimicrobial peptide Peptide-drug conjugate Cell-penetrating activity Membrane disruption Antitumor activity

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

Experimental study of pre-cracked concrete subjected to cryogenic freeze-thaw cycles based on an LNG concrete tank

引用

Journal of Southeast University(English Edition) 2022年第3期38卷 260-269页

作者： Zhang Puyang ma yuxuan Liu Yang Xu Yunlong Ding Hongyan State Key Laboratory of Hydraulic Engineering Simulation and Safety Tianjin UniversityTianjin 300072China CNOOC Petroleum and Gas Power Group Co. Ltd.Beijing 100020China

To investigate the mechanical properties of concrete under the leakage condition for a liquefied natural gas storage tank,cryogenic freeze-thaw cycle tests were performed under liquid nitrogen refrigeration and water immersion *** effects of the cryogenic temperature,freeze-thaw cycle,pre-crack,and addition of steel fiber on the compressive strength,flexural strength,and splitting tensile concrete strength were *** experimental results show that the width of pre-cracks tends to expand after freeze-thaw *** the freezing temperature is -80℃,the relative width of the pre-cracks expands by 1 to 2 ***,when the freezing temperature is -120℃,the relative width of the pre-cracks expands by 2 to 5 *** with the specimens without steel fibers,the specimens with steel fibers can still maintain a relatively complete appearance structure after the mechanical property *** compressive strength,flexural strength,and splitting tensile concrete strength decrease with the drop in the freezing *** adding steel fibers,all of the three strengths increased.

关键词： cryogenic temperature freeze-thaw cycle pre-cracked concrete steel fibers mechanical properties

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

Surface-neutralization engineered NiCo-LDH/phosphate hetero-sheets toward robust oxygen evolution reaction

引用

Green Energy & Environment 2024年第7期9卷 1151-1158页

作者： Shunfa Zhou yuxuan Liu Jing Li Zhao Liu Jiawei Shi Liyuan Fan Weiwei Cai Sustainable Energy Laboratory Faculty of Materials Science and Chemistry China University of Geosciences College of Science and Engineering James Cook University

Developing highly active oxygen evolution reaction（OER） electrocatalysts with robust durability is essential in producing high-purity hydrogen through water electrolysis. Layered double hydroxide（LDH） based catalysts have demonstrated efficient catalytic performance toward the relatively sluggish OER. By considering the promotion effect of phosphate（Pi） on proton transfer, herein, a facile phosphate acid（PA）surface-neutralization strategy is developed to in-situ construct NiCo-LDH/NiCoPi hetero-sheets toward OER catalysis. OER activity of NiCoLDH is significantly boosted due to the proton promotion effect and the electronic modulation effect of NiCoPi. As a result, the facilely prepared NiCo-LDH/NiCoPi catalyst displays superior OER catalytic activity with a low overpotential of 300 mV to deliver 100 ma cm-2OER and a Tafel slope of 73 mV dec-1. Furthermore, no visible activity decay is detected after a 200-h continuous OER operation. The present work,therefore, provides a promising strategy to exploit robust OER electrocatalysts for commercial water electrolysers.

关键词： Oxygen evolution reaction Phosphate Layered double hydroxide Hetero-sheets Stability

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

Defect engineered nickel hydroxide nanosheets for advanced pseudocapacitor electrodes

引用

Nano Research 2024年第6期17卷 5233-5242页

作者： Yaohang Gu yuxuan Zhang Xuanyu Wang Ateer Bao Bo Ni Haijun Pan Xiaoyan Zhang Xiwei Qi School of materials Science and Engineering Northeastern UniversityShenyang 110189China College of Metallurgy and Energy North China University of Science and TechnologyTangshan 063210China Key Laboratory of Dielectric and Electrolyte Functional material Hebei Province School of Resources and MaterialsNortheastern University at QinhuangdaoQinhuangdao 066004China School of Resources and materials Northeastern University at QinhuangdaoQinhuangdao 066004China

While the past years have witnessed great achievement in pseudocapacitors,the inauguration of electrode materials of high-performance still remains a formidable ***,the capacity and rate capability of the electrode depends largely on its electrical conductivity,which ensures fast charge transfer kinetics in both the grain bulk and grain ***,nickel hydroxides with oxygen vacancies are facilely fabricated via a hydrothermal *** active materials exhibit a high specific capacitance of 3250 F·g^(−1)and a high areal of capacitance of 14.98 F·cm^(−2)at 4.6 ma·cm^(−2).The asymmetric supercapacitor device based on our material delivers a high energy density of~71.6 Wh·kg^(−1)and a power density of~17,300 W·kg^(−1)and could retain~95%of their initial capacitance even after 30,000 *** addition,the defect-rich hydroxides demonstrate higher electrical conductivity as well as dielectric constant,which is responsible for the superior pseudocapacitive *** new scientific strategy in terms of taking the advantages of oxygen vacancies might open up new opportunities for qualified pseudocapacitive materials of overall high performances not only for nickel hydroxides but also for other metal hydroxides/oxides.

关键词： pseudocapacitors nickel hydroxides oxygen vacancies electrical conductivity

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

高速结构光器件及其在光学成像与测量中的应用

引用

光学学报 2022年第17期42卷 343-355页

作者：马宇轩孟照魁黄宏旭孙鸣捷北京航空航天大学仪器科学与光电工程学院北京100191

结构光场通常在空间分布上具有独特的光学特征,在显微、成像、通信和测量等领域有广泛的应用。结构光器件的种类繁多,制作材料和调制机理各不相同,在调制速度、调制深度、空间分辨率等性能指标上存在较大差异。介绍了主要的结构光器件(... 详细信息

结构光场通常在空间分布上具有独特的光学特征,在显微、成像、通信和测量等领域有广泛的应用。结构光器件的种类繁多,制作材料和调制机理各不相同,在调制速度、调制深度、空间分辨率等性能指标上存在较大差异。介绍了主要的结构光器件(液晶空间光调制器、数字微镜器件、硅基光学相控阵、LED阵列等)的工作原理及其性能特点,分析了这些结构光器件各自的适用范围,总结了结构光技术在显示投影、显微成像、鬼成像、三维成像、激光雷达等领域的典型应用情况。系统地展示了多种结构光器件的最新研究进展和前沿技术应用,这将为相关领域的研究者提供参考。

关键词：信号处理结构光器件显示投影显微成像鬼成像三维成像激光雷达

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：