Microscopy and Microanalysis最新文献

A Reference Hydride Ratio Method for the Resolution of Al/Fe Peak Overlapping in Atom Probe Tomography Experiments. 原子探针层析实验中分辨Al/Fe峰重叠的参考氢化物比方法。

IF 2.9 4区工程技术

Microscopy and Microanalysis Pub Date : 2025-05-09 DOI: 10.1093/mam/ozaf030

Aidar Zakirov, Yann Le Bouar, Frédéric Fossard, Williams Lefebvre

{"title":"A Reference Hydride Ratio Method for the Resolution of Al/Fe Peak Overlapping in Atom Probe Tomography Experiments.","authors":"Aidar Zakirov, Yann Le Bouar, Frédéric Fossard, Williams Lefebvre","doi":"10.1093/mam/ozaf030","DOIUrl":"https://doi.org/10.1093/mam/ozaf030","url":null,"abstract":"Precise Fe concentration measurements are essential to understand the kinetics of precipitation and evolution of mechanical properties in Al-Fe alloys. Moreover, with the increasing proportion of recycled metals, it is mandatory to rely on techniques capable of tracking impurities in Al-alloys to elucidate their effects on microstructure and properties. Atom Probe Tomography (APT) is a powerful material analysis tool capable of precise composition measurements. As it relies on time-of-flight mass spectrometry, the quality of the composition measurements is highly dependent on the proper peak identification and solving peak overlapping. The complexity of peak decomposition multiplies if molecular ions such as hydrides or oxides are present in the mass spectrum. Al-Fe is one of these systems, where three out of four peaks of Fe isotopes are overlapping with Al, AlH, and AlH2 mass intervals. To solve this complex peak overlapping case, an approach has been developed here. It is based on acquiring the Al-hydride formation ratio from APT analyses of standard materials, where no overlap with Fe peaks is observed. This simple method aims to improve the precision of Fe concentration measurements in Al-Fe system.","PeriodicalId":18625,"journal":{"name":"Microscopy and Microanalysis","volume":"31 3","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144032914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Novel Focused Ion Beam Techniques for Enhanced Sample Preparation for In Situ Transmission Electron Microscopy Heating and Irradiation Experiments. 用于原位透射电镜加热和辐照实验的新型聚焦离子束增强样品制备技术。

IF 2.9 4区工程技术

Microscopy and Microanalysis Pub Date : 2025-05-09 DOI: 10.1093/mam/ozaf029

Kerui Wei, Matthew Lindley, Xuzhao Liu, Sarah J Haigh, Ping Xiao, Philip J Withers, Anamul Haq Mir, Graeme Greaves, João P Martins, Junquan Lao, Xiangli Zhong

引用次数: 0

Morphology of Mouthparts and Distribution of Sensilla in Immature Stages and Adults of Parthenium Beetles. 幼虫和成虫口器形态及感受器分布。

IF 2.9 4区工程技术

Microscopy and Microanalysis Pub Date : 2025-05-09 DOI: 10.1093/mam/ozaf035

Priyanka Yadav, Arvind Kumar Patel, Desh Deepak Chaudhary, Bhupendra Kumar

{"title":"Morphology of Mouthparts and Distribution of Sensilla in Immature Stages and Adults of Parthenium Beetles.","authors":"Priyanka Yadav, Arvind Kumar Patel, Desh Deepak Chaudhary, Bhupendra Kumar","doi":"10.1093/mam/ozaf035","DOIUrl":"https://doi.org/10.1093/mam/ozaf035","url":null,"abstract":"The Parthenium beetle, Zygogramma bicolorata Pallister (Coleoptera: Chrysomelidae) is a notable biocontrol agent against invasive Parthenium weed in Australia, South Africa, and the Indian subcontinent. While larvae consume both inflorescences and leaves, and adults feed exclusively on leaves, no prior study has compared the mouthparts of Z. bicolorata larvae and adults. Present study utilized scanning electron microscopy to investigate the morphology and distribution of sensilla on mouthparts of fourth-instar larvae, pupae, and adults. Our results revealed that fourth-instar larvae had 9-different sensillum types: sensilla chaetica (Sch I-III), sensilla basiconica (Sb I-V), and sensilla digitiformia (Ds) on their mouthparts, whereas pupal sensilla were fewer and less distinct. In adults, 13-different sensillum types were present: sensilla chaetica (Sch I-III) on labrum, labium, mandibles, and maxillae; sensilla basiconica (Sb I-VI) on labium, epipharyx, lacinia, maxillary palps, and labial palps; sensilla digitiformia (Ds) on maxillary palps; and sensilla campaniformia (Sca), and sensilla coeloconica (Sco I-II) on epipharyx. These sensilla likely play vital roles in feeding behavior, sensory perception, and host plant detection. Our findings provide a microscopic morphological foundation for further research on food recognition mechanisms and local adaptations in specialist phytophagous insects.","PeriodicalId":18625,"journal":{"name":"Microscopy and Microanalysis","volume":"31 3","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143993106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Innovative Transmission Electron Microscopy-Based Ultrastructural Imaging Methodology for the Diagnosis of Respiratory Ciliary Disorders. 一种基于透射电子显微镜的诊断呼吸道纤毛疾病的创新超微结构成像方法。

IF 2.9 4区工程技术

Microscopy and Microanalysis Pub Date : 2025-05-09 DOI: 10.1093/mam/ozaf033

Shikha Chaudhary, Kana Ram Jat, Subhash Chandra Yadav

{"title":"An Innovative Transmission Electron Microscopy-Based Ultrastructural Imaging Methodology for the Diagnosis of Respiratory Ciliary Disorders.","authors":"Shikha Chaudhary, Kana Ram Jat, Subhash Chandra Yadav","doi":"10.1093/mam/ozaf033","DOIUrl":"https://doi.org/10.1093/mam/ozaf033","url":null,"abstract":"Transmission electron microscopy is a classical methodology for diagnosing many ciliary disorders. However, heterogeneity in sampling, low yield of ciliary epithelium by cytology, improper fixation, and different orientations of cylindrical axes of cilia section create difficulties in achieving the appropriate ciliary ultrastructure for diagnosis. We have reported an improvement in the number and proportion of ciliary epithelial cells up to 32 times. These include cleaning the nose before sample collection, changing the collection brush used for the cervical cytology (eight times), and paired nose collection (four times). We have optimized the primary fixation to preserve cilia ultrastructure, modified ultra-sectioning, and improved the number of reportable ultrastructure of cilia by tilting the sample angles of α axes (up to ±40°) and β axes (up to ±25°). These optimizations resulted in ∼20 times more reportable cilia (parallel to cylindrical axes concerning the electron beam, clearly visible dynein arms, 9 + 2 patterns, and compound cilia). This resulted in an enhanced diagnosis of ciliary disorders, up to 67% (reported in 135 among 200 patients), compared with 5% achieved using conventional routine practices at our facility. With certain advancements in conventional method, we could achieve an accuracy comparable to the new sophisticated cryo-electron tomography imaging.","PeriodicalId":18625,"journal":{"name":"Microscopy and Microanalysis","volume":"31 3","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144078976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Three-dimensional Ultrastructural and Anatomical Analysis of the Relationship Between Subepithelial Stromal Cells and Shape of Basement Membrane of the Epithelium of Prostatic Duct in Mice. 小鼠前列腺导管上皮下基质细胞与基底膜形态关系的三维超微结构及解剖分析。

IF 2.9 4区工程技术

Microscopy and Microanalysis Pub Date : 2025-05-09 DOI: 10.1093/mam/ozaf027

Kei-Ichiro Uemura, Akinobu Togo, Tasuku Hiroshige, Keisuke Ohta, Yoshihiro Kawaguchi, Kosuke Ueda, Kiyoaki Nishihara, Makoto Nakiri, Shingo Hirashima, Tsukasa Igawa, Kei-Ichiro Nakamura

{"title":"Three-dimensional Ultrastructural and Anatomical Analysis of the Relationship Between Subepithelial Stromal Cells and Shape of Basement Membrane of the Epithelium of Prostatic Duct in Mice.","authors":"Kei-Ichiro Uemura, Akinobu Togo, Tasuku Hiroshige, Keisuke Ohta, Yoshihiro Kawaguchi, Kosuke Ueda, Kiyoaki Nishihara, Makoto Nakiri, Shingo Hirashima, Tsukasa Igawa, Kei-Ichiro Nakamura","doi":"10.1093/mam/ozaf027","DOIUrl":"https://doi.org/10.1093/mam/ozaf027","url":null,"abstract":"This study examined the three-dimensional (3D) ultrastructural relationship between subepithelial stromal cells (SESCs) and the basement membranes (BM) of the prostatic epithelium in mice. Three 13-week-old male C57BL/6 mice were used for analysis of the lower urinary tract via en bloc staining as well as 3D ultrastructural analysis of SESCs, stroma, and luminal and basal epithelial cells. Morphologically, two types of epithelial BMs were observed: wavy and straight. SESCs associated with straight BMs were sheet-like in structure and much larger than those associated with the wavy BMs, with occasional protrusions extending toward the BM. SESCs with wavy BMs were of two major types: one type was sheet-like and relatively large, frequently extending its projections toward the BM, whereas the other type was small and mostly did not extend its projections toward the BM. Some SESCs with wavy and straight BMs exhibited contact with nerves. However, none of the analyzed SESCs showed vascular contact. Our study revealed the relationship between SESCs and the BM of epithelia in the mouse prostatic duct. Each SESC had a distinctive morphology that matched the shape of the epithelial BM. SESCs could be a new target for research in the fields of anatomy and physiology.","PeriodicalId":18625,"journal":{"name":"Microscopy and Microanalysis","volume":"31 3","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144026678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Scanning Transmission Electron Microscopy-Atom Probe Tomography Correlative Analysis for the Characterization of Solute-defect Interactions. 扫描透射电子显微镜-原子探针层析成像表征溶质缺陷相互作用的相关分析。

IF 2.9 4区工程技术

Microscopy and Microanalysis Pub Date : 2025-05-09 DOI: 10.1093/mam/ozaf039

Siwei Chen, Jonathan D Poplawsky, Steven J Zinkle, Matthew Boebinger, Yajie Zhao

{"title":"Scanning Transmission Electron Microscopy-Atom Probe Tomography Correlative Analysis for the Characterization of Solute-defect Interactions.","authors":"Siwei Chen, Jonathan D Poplawsky, Steven J Zinkle, Matthew Boebinger, Yajie Zhao","doi":"10.1093/mam/ozaf039","DOIUrl":"https://doi.org/10.1093/mam/ozaf039","url":null,"abstract":"Atom probe tomography (APT) and (scanning) transmission electron microscopy ((S)TEM) are complementary techniques that provide spatially resolved chemical and structural information at the atomic scale. In this study, we employ two different STEM/APT correlative analysis methods to investigate Cr segregation at dislocation loops in ultra-high purity Fe-Cr alloys. APT needles for the correlative analysis were extracted either from bulk material or from thinned TEM lamellae. STEM analysis was used to determine the Burgers vectors of ion-irradiation-induced dislocation loops, while APT reconstruction of the same region revealed the Cr segregation to these loops. We extended the g•b = 0 invisibility criterion of dislocation loops from TEM mode in a lamella to STEM mode in a needle-shaped specimen. STEM and APT analysis on the same needle provide straightforward correlative analysis, although it is limited by a small observation volume. In contrast, iterative STEM analysis of TEM lamellae, followed by the selective extraction of specific regions of interest for APT analysis, expands the observation area by up to 100 times but requires additional time-consuming steps for APT needle extraction from the lamellae.","PeriodicalId":18625,"journal":{"name":"Microscopy and Microanalysis","volume":"31 3","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144019025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quasi-ray Tracing Method for Coulomb Interaction Estimation in Charged Particle Systems. 带电粒子系统库仑相互作用估计的准射线追踪方法。

IF 2.9 4区工程技术

Microscopy and Microanalysis Pub Date : 2025-05-09 DOI: 10.1093/mam/ozaf031

Mingkang Wang, Weiming Ren, Zizhou Gong

{"title":"Quasi-ray Tracing Method for Coulomb Interaction Estimation in Charged Particle Systems.","authors":"Mingkang Wang, Weiming Ren, Zizhou Gong","doi":"10.1093/mam/ozaf031","DOIUrl":"https://doi.org/10.1093/mam/ozaf031","url":null,"abstract":"Coulomb interaction (CI) is a crucial factor contributing to the degradation of resolution in charged particle imaging systems. For example, certain inspection applications of scanning electron microscopes (SEM) require high probe current, which exacerbates resolution degradation due to CI. However, current methods for estimating CI, such as direct ray tracing and analytical approaches, struggle to balance speed and accuracy. This limitation significantly impedes the efficient optimization of SEM design parameters. In this study, we propose a quasi-ray tracing method based on perturbation theory, which simulates CI-induced trajectory displacement and the Boersch effect using a Monte Carlo ray tracing approach. Our method eliminates the need for iterative solvers employed in conventional direct ray tracing, thereby increasing simulation speed by over 105 times. Benchmarking against the direct ray tracing method demonstrates an error margin of less than 1% over a broad parameter range covering typical SEM applications. This quasi-ray tracing approach offers a fast, accurate, and general solution for CI estimation in charged particle imaging systems.","PeriodicalId":18625,"journal":{"name":"Microscopy and Microanalysis","volume":"31 3","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144035194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comprehensive Comparison Between STEM-HAADF and TEM Bright-field Mode for Imaging Resin Embedded Biological Samples. STEM-HAADF与TEM亮场模式在树脂包埋生物样品成像中的综合比较

IF 2.9 4区工程技术

Microscopy and Microanalysis Pub Date : 2025-05-09 DOI: 10.1093/mam/ozaf038

Kayla Lynne Haberman, Jelena Danilovic Lukovic, Snezana Kovacevic, Xinyi Zhang, Bessie Kebaara, Joseph Taube, Debora Berti, Bernd Zechmann

{"title":"Comprehensive Comparison Between STEM-HAADF and TEM Bright-field Mode for Imaging Resin Embedded Biological Samples.","authors":"Kayla Lynne Haberman, Jelena Danilovic Lukovic, Snezana Kovacevic, Xinyi Zhang, Bessie Kebaara, Joseph Taube, Debora Berti, Bernd Zechmann","doi":"10.1093/mam/ozaf038","DOIUrl":"https://doi.org/10.1093/mam/ozaf038","url":null,"abstract":"Most investigations of resin embedded biological samples by transmission electron microscopy (TEM) have been performed in TEM bright-field mode where the electron beam transmits through the sample. Modern TEMs can also be used in scanning TEM mode (STEM) where the beam scans across the sample. The preferred detector for STEM mode is the high-angle annular dark-field (HAADF) detector. The aim of this study was to compare image quality of resin embedded biological samples such as yeast (Saccharomyces), algae (Chlorella, Haematococcus), plant leaves (Nicotiana), human cells (MCF7), and animal tissue (mouse liver and brain) between TEM bright-field and STEM-HAADF mode. Generally, images taken in STEM-HAADF mode showed better image quality in terms of contrast, brightness, and signal-to-noise ratio. Samples of sections that did not receive postcontrasting with uranyl acetate or lead citrate appeared significantly less grainy. Specifically, STEM-HAADF mode resulted in significantly better image quality of algae cells, MCF7, and liver cells that did not receive postcontrasting. Artifacts visible in TEM mode were absent in STEM-HAADF mode. Thus, we can conclude that STEM-HAADF mode has significant advantages when investigating resin embedded biological samples that have little contrast or sections that did not receive postcontrasting rendering postcontrasting of sections unnecessary.","PeriodicalId":18625,"journal":{"name":"Microscopy and Microanalysis","volume":"31 3","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144001668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Correlative Approach for the Assessment of Porosity in Shale Rocks by Scanning Electron Microscopy. 用扫描电镜评价页岩孔隙度的相关方法

IF 2.9 4区工程技术

Microscopy and Microanalysis Pub Date : 2025-05-09 DOI: 10.1093/mam/ozaf020

Federico Medina, Ignacio Jausoro, María Alejandra Floridia Addato, María Jimena Rodríguez, Alberto Caneiro

{"title":"A Correlative Approach for the Assessment of Porosity in Shale Rocks by Scanning Electron Microscopy.","authors":"Federico Medina, Ignacio Jausoro, María Alejandra Floridia Addato, María Jimena Rodríguez, Alberto Caneiro","doi":"10.1093/mam/ozaf020","DOIUrl":"https://doi.org/10.1093/mam/ozaf020","url":null,"abstract":"A correlative approach to compute porosity at the nanoscale in areas as large as 3 mm × 3 mm through field emission scanning electron microscopy (FESEM) is presented. This approach overcomes the limitation of FESEM related to its representativeness on larger areas. The strategy is based on imaging an area of 3 mm × 3 mm where a set of regions of interest (ROIs) of 600 μm × 600 μm with similar mineralogy is selected and imaged. A second selection of areas of 150 μm × 150 μm inside the ROIs is performed. The three sets of images, linked through their mineralogy and organic matter, account for pore sizes within their given resolution range, providing an efficient computational method. The cumulative porosity plot, in addition of showing the contribution of the different pore sizes to the total porosity, enables the detection of fissures. The pore size distribution function allows to discuss the practical limit for counting small pores, around 30-40 nm for the samples studied in this work, under the given experimental conditions. This value is appreciably larger than the resolution of FESEM and the minimum pore size defined considering either 1 pixel/1 pore or 9 pixels/1 pore.","PeriodicalId":18625,"journal":{"name":"Microscopy and Microanalysis","volume":"31 3","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144018452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the Formation of Quaternary Particles, Based on Lead-Barium-Antimony + Tin, Considered Characteristic of GSRs. 基于铅-钡-锑+锡的四元粒子的形成，认为是gsr的特征。

IF 2.9 4区工程技术

Microscopy and Microanalysis Pub Date : 2025-05-09 DOI: 10.1093/mam/ozaf028

Felice Nunziata, Claudio Gentile, Marco Romeo, Giancarlo Palumbo, Gabriele Rotter

{"title":"On the Formation of Quaternary Particles, Based on Lead-Barium-Antimony + Tin, Considered Characteristic of GSRs.","authors":"Felice Nunziata, Claudio Gentile, Marco Romeo, Giancarlo Palumbo, Gabriele Rotter","doi":"10.1093/mam/ozaf028","DOIUrl":"https://doi.org/10.1093/mam/ozaf028","url":null,"abstract":"The presence of tin in gunshot residue (GSR) particles from ammunitions used in short and long rifled firearms is well known and widely documented. Tin does not originate from the primer mixture itself but is typically linked to a thin disc-shaped foil placed over mercury fulminate-based primers to prevent embrittlement of the cartridge case and primer cap. However, this practice has not been previously reported or observed in hunting ammunitions. We designed an experimental protocol to investigate the formation of quaternary GSR particles containing Pb-Ba-Sb-Sn, following shots fired from a double-barrel shotgun using modified hunting ammunitions. These ammunitions were loaded with multiple pellets and included a thin tin foil over the primer's flash hole. Our results confirm that the tin foil is directly responsible for the origin and composition of the quaternary GSR particles detected on the collected stubs. Additionally, the hunting ammunitions market has recently seen increased production of environmentally friendly ammunitions, including shot pellets made of tin, tin alloys, or coated with tin. Our findings provide a foundation for further experimental studies into GSR from such eco-friendly ammunitions, especially in forensic investigations involving tin-containing pellets.","PeriodicalId":18625,"journal":{"name":"Microscopy and Microanalysis","volume":"31 3","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144010124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0