检索结果-南通市图书馆

基于深度学习的图像识别技术在选矿中的应用进展

在线全文

学校读者我要写书评

暂无评论

矿冶 2024年第1期33卷 131-140页

作者：胡雅祺孔静李宇恒陈天星西安建筑科技大学资源工程学院西安710055

基于我国开展“矿山智慧化”的战略部署,未来矿产资源开发利用实现机械化、自动化、信息化、智能化已经成为行业发展的必然趋势。近年来,随着计算机图像处理技术的飞速发展,机器视觉在工业中得到广泛应用,基于深度学习的图像识别技术也... 详细信息

基于我国开展“矿山智慧化”的战略部署,未来矿产资源开发利用实现机械化、自动化、信息化、智能化已经成为行业发展的必然趋势。近年来,随着计算机图像处理技术的飞速发展,机器视觉在工业中得到广泛应用,基于深度学习的图像识别技术也将成为选矿厂智能化的重要工具。简述了图像识别的主要技术及方法,介绍了图像识别技术在重选、磁选、浮选中的研究现状,并对图像识别技术在选矿中的应用进行了展望,以期能够为相关学者提供参考。

关键词：图像识别深度学习选矿

In-situ study on hydrogen bubble evolution in the liquid Al/solid Ni interconnection by synchrotron radiation X-ray radiography

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2019年第7期35卷 1388-1392页

作者： Zongye Ding Qiaodan hu Wenquan Lu Xuan Ge Sheng Cao Siyu Sun tianxing Yang Mingxu Xia Jianguo Li Shanghai Key Laboratory of Materials Laser Processing Modification School of Materials Science and EngineeringShanghai Jiao Tong University200240ShanghaiChina Monash Centre for Additive Manufacturing (MCAM) Monash UniversityClaytonVIC3800Australia

Synchrotron X-ray radiography was used to carry out an in-situ observation of the hydrogen bubble evolution in the liquid Al/solid Ni interconnection. The individual bubble mainly grows in a stochastic way during heating. The size distribution for groups of bubbles follows a Gaussian distribution in the early stage and Lifshitz-Slyozov-Wagner(LSW) diffusion controlled distribution in the final stage. The intermetallic compounds(IMCs) first form during solidification, following by the hydrogen bubbles. The bubbles between two adjacent Al3Ni grains grow unidirectionally along the liquid channel, with the bottom being impeded by the Al3Ni phase and the radius of the growth front being smaller. For the bubbles at triple junctions, they grow along the liquid channel and the crack with morphology transition.

关键词： Synchrotron radiation Liquid Al/solid Ni interconnection Hydrogen bubble Intermetallic compounds Growth behavior

Algorithm of Micro-Grooving and Imaging Processing for the Generation of High-Resolution Structural Color Images

在线全文

学校读者我要写书评

暂无评论

Nanomanufacturing and Metrology 2020年第3期3卷 187-198页

作者： Tianfeng Zhou Yupeng He tianxing Wang Xiaobin Dong Peng Liu Wenxiang Zhao Yao hu Jiwang Yan Key Laboratory of Fundamental Science for Advanced Machining.Beijing Institute of Technology Beijing 100081China Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology Beijing Institute of TechnologyBeijing 100081China Department of Mechanical Engineering Faculty of Science and TechnologyKeio UniversityYokohama 223-8522Japan

The use of submicron structures for structural coloration of surfaces has broad applications for color filters,projection displays,virtual reality,and ***,structural color images lack high resolution due to low manufacturing *** this study,the axial-feed fly cutting(AFC)method is proposed to fabricate submicron grooves for the diffraction of visible light to create structural color *** establish the relationship between the color information in the pixels of the original image and the parameters of the array units corresponding to the *** algorithm to determine groove spacing and the tool path is established,and array units with the desired groove spacing are machined to reproduce the structural color *** submicron grooves fabricated by AFC have high quality and good *** to the excellent diffraction performance of the machined grooves,images with high saturation and resolution can be *** is verified that images with various colors can be efficiently fabricated using the proposed method and algorithm.

关键词： Subniicron structure Microgroove Structural coloration Structural-color image Fly cutting Micromachining

Unveiling the Growth Mechanism of Faceted Primary Al_(2)Cu with Complex Morphologies During Solidification

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

Acta Metallurgica Sinica(English Letters) 2022年第1期35卷 124-132页

作者： Zongye Ding Qiaodan hu Fan Yang Liao Yu tianxing Yang Naifang Zhang Wenquan Lu Jingwei Yang Jian Qiao Jianguo Li School of Mechatronic Engineering and Automation Foshan UniversityFoshan528225China Shanghai Key Laboratory of Materials Laser Processing and Modification School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai200240China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai200240China

The growth characteristic of primary faceted Al_(2)Cu intermetallic compounds(IMCs)during solidification was observed directly by synchrotron *** formation and transition mechanisms of Al_(2)Cu IMCs with diverse morphologies were elucidated by first-principle calculations combined with electron backscatter diffraction *** Al_(2)Cu crystals preferred to grow along the[001]direction and were bounded by{110}planes with the lowest surface *** faceted Al_(2)Cu rod-like clusters consisted of multiple crystals with complete rod,hollowness and partial sides,which was attributed to the increase in strain energy and solute redistribution during *** faceted Al_(2)Cu with branches was characteristic with the perpendicular relationship between the main branches and side steps and partial coalescence at the junction,which was ascribed to the continuous propagation and growth of newly formed crystals along the diagonal direction.

关键词： Solidification Synchrotron radiography Internetallic compounds Crystal growth Morphology

DESIGN OF MICROPHYSIOMETER BASED ON MULTIPARAMETER CELL-BASED BIOSENSORS FOR QUICK DRUG ANALYSIS

在线全文

学校读者我要写书评

暂无评论

Journal of Innovative Optical Health Sciences 2012年第1期5卷 36-47页

作者： NING hu DA HA CHENGXIONG WU GONG CHENG huI YU tianxing WANG JIEYING WU huA CAI QINGJUN LIU PING WANG Biosensor National Special Laboratory Key Laboratory for Biomedical Engineering of Education Ministry Department of Biomedical Engineering Zhejiang University Hangzhou 310027P.R.China ACEA Bioscience Inc.West Lake Technology and Economy Park Hangzhou 310030 P.R.China

Cellular metabolism arouses the changes of substance in extracellular physiological microenvironment,and the metabolic level reflects the physiological state of *** paper developed a novel microphysiometer automatic analysis instrument based on multiparameter cell-based biosensors for quick drug *** study included the multiparameter cell-based biosensors,cell culture chamber,drug auto-injection detection and *** analysis instrument was capable of real-time detection for the acidic product and other chemical parameters generated by the cellular metabolism in the ***,the paper employs human breast cancer cell line MCF-7 and drug experiments to verify the performance of microphysiometer,and study effects of different drugs on cell ***,the research explores drug analysis method of the multiparameter *** results showed that the cell-based microphysiometer system provides a utility platform for rapid,long-term and automatic cell physiological environment detection and drug analysis.

关键词： Microphysiometer multiparameter cell-based biosensor extracellular acidification cancer cells drug analysis

Surveillance of ClassⅠNewcastle Disease Virus at Live Bird Markets and Commercial Poultry Farms in Eastern China Reveals the Epidemic Characteristics

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

Virologica Sinica 2021年第4期36卷 818-822页

作者： Xiaolong Lu Xiaoquan Wang Tiansong Zhan Yifan Sun Xin Wang Naiqing Xu tianxing Liao Yu Chen Min Gu Shunlin hu Xiaowen Liu Xiufan Liu Animal Infectious Disease Laboratory College of Veterinary MedicineYangzhou UniversityYangzhou 225000China Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis Yangzhou UniversityYangzhou 225000China Jiangsu Key Laboratory of Zoonosis Yangzhou UniversityYangzhou 225000China

Dear Editor,Newcastle disease(ND),caused by virulent Newcastle disease virus(NDV),is a highly contagious and economically devastating viral disease of birds(Habib et al.2018).NDV,also termed as avian paramyxovirus type 1(APMV-1),belongs to the genus Orthoavulavirus in the family Paramyxoviridae according to the International Committee on Taxonomy of Viruses(ICTV)(Amarasinghe et al.2019).According to the latest phylogenetic classification system.

关键词： Newcastle ClassⅠ Poultry

Characteristics of alveolar macrophages in bronchioalveolar lavage fluids from active tuberculosis patients identified by single-cell RNA sequencing

在线全文

学校读者我要写书评

暂无评论

The Journal of Biomedical Research 2022年第3期36卷 167-180,I0001,I0002页

作者： Qianqian Chen Chunmei hu Wei Lu tianxing Hang Yan Shao Cheng Chen Yanli Wang Nan Li Linling Jin Wei Wu Hong Wang Xiaoning Zeng Weiping Xie Department of Respiratory and Critical Care Medicine the First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu 210029China Department of Tuberculosis the Second Hospital of NanjingNanjingJiangsu 210029China Jiangsu Provincial Center for Disease Control and Prevention NanjingJiangsu 210029China Department of Bioinformatics Nanjing Medical UniversityNanjingJiangsu 210029China School of Biological Science and Medical Engineering Southeast UniversityNanjingJiangsu 210029China

Tuberculosis(TB),is an infectious disease caused by Mycobacterium tuberculosis(***),and presents with high morbidity and *** macrophages play an important role in TB pathogenesis although there is heterogeneity and functional *** study aimed to show the characteristics of alveolar macrophages from bronchioalveolar lavage fluid(BALF)in active TB ***-cell RNA sequencing(scRNA-seq)was performed on BALF cells from three patients with active TB and additional scRNA-seq data from three healthy adults were established as *** profiles were analyzed and compared by differential gene expression and functional enrichment *** applied pseudo-temporal trajectory analysis to investigate correlations and heterogeneity within alveolar macrophage *** macrophages from active TB patients at the single-cell resolution are *** found that TB patients have higher cellular percentages in five macrophage *** macrophage subclusters with increased percentages were involved in inflammatory signaling pathways as well as the basic macrophage *** TB-increased alveolar macrophage subclusters might be derived from M1-like polarization state,before switching to an M2-like polarization state with the development of *** ***-cell communications of alveolar macrophages also increased and enhanced in active TB ***,our study demonstrated the characteristics of alveolar macrophages from BALF in active TB patients by using scRNA-seq.

关键词： tuberculosis macrophage bronchioalveolar lavage fluid single-cell RNA sequencing

A biosensing system employing nanowell microelectrode arrays to record the intracellular potential of a single cardiomyocyte

在线全文

学校读者我要写书评

暂无评论

Microsystems & Nanoengineering 2022年第3期8卷 185-198页

作者： Yuting Xiang Haitao Liu Wenjian Yang Zhongyuan xu Yue Wu Zhajian Tang Zhjing Zhu Zhiyong Zeng Depeng Wang tianxing Wang Ning hu Diming Zhang Department of Obstetrics and Gynecology Affiliated Dongguan People's HospitalSouthern Medical UniversityDongguan 523058China Research Center for Inelligent Sensing Systems Zhejiang LaboratoryHangzhou 311100China Research Center for humanoid Sensing Zhejiang LaboratoryHangzhou 311100China Key Laboratory of Novel Target and Drug Study for Neural Repair of Zhejiang Province School of MedicineSchool of Computer&Computing ScienceZhejiang University City CollegeHangzhou 310015China School of Brain Science and Brain Medicine Zhejiang UniversityHangzhou 310058China School of Automation Nanjing University of Science and TechnologyNanjing 210094China College of Energy and Power Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China E-Link Care Meditech Co. LtdHangzhou 310011China ZJU-Hangzhou Global Scientific and Technological Innovation Center Department of ChemitryZhejiang UniversityHangzhou 310058China

Electrophysiological recording is a widely used method to investigate cardiovascular pathology,pharmacology and developmental *** arrays record the electrical potential of cells in a minimally invasive and highthroughput ***,commonly used microelectrode arays primarily employ planar microelectrodes and cannot work in applications that require a recording of the intracellular action potential of a single *** this study,we proposed a novel measuring method that is able to record the intracellular action potential of a single cardiomyocyte by using a nanowell patterned microelectrode array(NWMEA).The NWMEA consists of five nanoscale wells at the center of each circular planar *** pulse electroporation was applied to the NWMEA to penetrate the cardiomyocyte membrane,and the intracellular action potential was continuously *** intracellular potential recording of cardiomyocytes by the NWMEA measured a potential signal with a higher quality(213.76±25.85%),reduced noise root-mean-square(~33%),and higher signal-to-noise ratio(254.36±12.61%)when compared to those of the extracellular *** to previously reported nanopillar microelectrodes,the NWMEA could ensure single cell electroporation and acquire high-quality action potential of cardiomyocytes with reduced fabrication *** NWMEA-based biosensing system is a promising tool to record the intracellular action potential of a single cell to broaden the usage of microelectrode arrays in electrophysiological investigation.

关键词： arrays potential record

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

基于曲率修正的弧齿锥齿轮齿面设计

航空动力学报 2018年第7期33卷 1743-1749页

作者：杨建军龚飞张华李天兴魏冰阳河南科技大学机电工程学院河南洛阳471003 机械装备先进制造河南省协同创新中心河南洛阳471003

针对弧齿锥齿轮小轮齿面复杂,加工参数调整计算繁琐,根据小轮切齿加工数学模型,构建与小轮齿面具有相对传动关系的共轭大轮齿面。以完全共轭大轮为基准面,提出一种大轮差齿面曲率修正构建方法。对差齿面和完全共轭齿面叠加后得到的大轮... 详细信息

针对弧齿锥齿轮小轮齿面复杂,加工参数调整计算繁琐,根据小轮切齿加工数学模型,构建与小轮齿面具有相对传动关系的共轭大轮齿面。以完全共轭大轮为基准面,提出一种大轮差齿面曲率修正构建方法。对差齿面和完全共轭齿面叠加后得到的大轮目标齿面进行离散齿面接触分析,结果显示,采用临界干涉法可有效判断啮合状态,真实获得离散齿面的啮合印痕和传动误差曲线。弧齿锥齿轮的滚检试验结果表明,利用齿面曲率修正的方法对完全共轭大轮进行Ease-off二阶修形设计,得到的接触区位置和啮合迹线方向符合满足预定的传动性能。设计的目标齿面可以作为弧齿锥齿轮大轮精密锻造的标准齿面,避免了小轮齿面加工参数的二次调整计算。

关键词：共轭齿面曲率修正传动关系差齿面接触分析