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Artykuły w czasopismach na temat "Microscopie – Analyse informatique"

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da, Silva Carolina Prandi, Almeida Rafael Felipe de, Talita Kely Bellonzi, and Eduardo Custódio Gasparino. "Evolution of pollen grain morphology in Amorimia and allies evidences the importance of palynological apomorphies and homoplasies in Malpighiaceae systematics." Plant Ecology and Evolution 156, no. (3) (2023): 399–415. https://doi.org/10.5091/plecevo.102524.

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Background and aims – Pollen grain morphology is an important morphological character for aiding the systematics of flowering plants. For Malpighiaceae, only a single unpublished palynological study has comprehensively sampled ca 60 of this family's 75 currently accepted genera. To test the systematic relevance of pollen morphology in <i>Amorimia</i> and allies, we characterised the pollen morphology of these lineages. We scored, coded, and mapped 12 characters onto the most recent molecular phylogeny of <i>Amorimia</i> and allies. Material and methods – We sampled 13 species of <i>Amorimia</i
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Rosen, Arlene Miller. "Ancient Town and City Sites: A View from the Microscope." American Antiquity 54, no. 3 (1989): 564–78. http://dx.doi.org/10.2307/280783.

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Archaeological studies concerned with reconstructing activity areas, room functions, and site-formation processes can benefit greatly from analyses of the microartifacts found on and within occupation surfaces. These remains are often primary refuse directly related to activities, and can be used to identify such locations as food-preparation areas, flint-knapping stations, and storage facilities. In addition, certain microartifacts are informative about site-formation processes. For example, the grain-size distribution of charcoal may be indicative of primary vs. secondary refuse, high percen
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Kucheriavyi, Y. P. "TRANSMISSION ELECTRON MICROSCOPY FOR THE DIRECT ANALYSIS OF FIBRIN CLOT STRUCTURE." Biotechnologia Acta 16, no. 2 (2023): 30–31. http://dx.doi.org/10.15407/biotech16.02.030.

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The aim of our study was to compare the structure of clots formed as a result of thrombin-induced fibrin polymerization in the presence or absence of monoclonal fibrin-specific antibodies fragments as factors that change the clot structure. We concentrated on the final stage of fibrin clot formation at maximal turbidity point for every sample. Methods. Fibrin polymerization was studied by transmission electron microscopy (TEM) of negatively contrasted samples on H-600 Transmission Electron Microscope (“Hitachi”,Japan); 1% water solution of uranyl acetate (“Merck”, Germany) was used as a negati
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Demicheli, Romano, William Hrushesky, Michael Retsky, and Elia Biganzoli. "Interpreting Breast Cancer Survival Data by the Hazard Function: Remarkable Findings from Event Dynamics." Medicina 56, no. 9 (2020): 468. http://dx.doi.org/10.3390/medicina56090468.

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The report addresses the role of the hazard function in the analysis of disease-free survival data in breast cancer. An investigation on local recurrences after mastectomy provided evidence that uninterrupted growth is inconsistent with clinical findings and that tumor dormancy could be assumed as working hypothesis to understand the clinical course of the disease. Additionally, it was deemed that the lag-time between primary tumor removal and tumor recurrence is dynamically dependent on the subclinical metastasis development within the host-tumor system and, therefore, may be informative abou
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Iñiguez, Alena Mayo, Lorrayne Brito, Lucélia Guedes, and Sergio Augusto de Miranda Chaves. "Helminth infection and human mobility in sambaquis: Paleoparasitological, paleogenetic, and microremains investigations in Jabuticabeira II, Brazil (2890 ± 55 to 1805 ± 65 BP)." Holocene 32, no. 3 (2021): 200–207. http://dx.doi.org/10.1177/09596836211060490.

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Sambaquis or shellmounds are archeological sites constructed by hunter-fisher-gatherers that inhabited the Brazilian coast about 10,000–2000 yrs BP. Jabuticabeira II (JABII: 2890 ± 55 to 1805 ± 65 BP) is one of dozens of contemporaneous sambaquis of the Santa Catarina state, South Brazil, and contains hundreds of neatly organized burials, indicating great population density. In order to gather information about the health, diet and way of life of people in JABII, a paleoparasitological, paleogenetic, and micro-human remains investigation was carried out. Pelvic region and environmental control
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Carter, Francis, Alfred Anwander, Mathieu Johnson, et al. "Assessing quantitative MRI techniques using multimodal comparisons." PLOS One 20, no. 7 (2025): e0327828. https://doi.org/10.1371/journal.pone.0327828.

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The study of brain structure and change in neuroscience is commonly conducted using macroscopic morphological measures of the brain such as regional volume or cortical thickness, providing little insight into the microstructure and physiology of the brain. In contrast, quantitative Magnetic Resonance Imaging (MRI) allows the monitoring of microscopic brain change non-invasively in-vivo, and provides directly comparable values between tissues, regions, and individuals. To support the development and common use of qMRI for cognitive neuroscience, we analysed a set of qMRI and dMRI metrics (R1, R
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Thuy, Ben, Larry Knox, Lea D. Numberger-Thuy, Nicholas S. Smith, and Colin D. Sumrall. "Ancient deep ocean as a harbor of biotic innovation revealed by Carboniferous ophiuroid microfossils." Geology 51, no. 2 (2023): 157–61. http://dx.doi.org/10.1130/g050596.1.

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Abstract Fossil-informed molecular phylogenies have emerged as the most powerful tool for correlating biotic evolution and Earth history. The accuracy of these trees, however, depends on the completeness of fossil sampling. For most organismal clades, the available fossil record is insufficiently sampled. This is especially true for groups with a multi-element skeleton, such as echinoderms and vertebrates, where sampling efforts focus largely on rare finds of intact skeletons. For these groups, inconspicuous but informative skeletal fragments are commonly neglected. This sampling bias excludes
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Boccacci, Giulia, Francesca Frasca, Chiara Bertolin, and Anna Maria Siani. "Influencing Factors in Acoustic Emission Detection: A Literature Review Focusing on Grain Angle and High/Low Tree Ring Density of Scots Pine." Applied Sciences 12, no. 2 (2022): 859. http://dx.doi.org/10.3390/app12020859.

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Among non-destructive testing (NDT) techniques applied to structural health monitoring in existing timber structures, ranging from visual inspection to more sophisticated analysis, acoustic emission (AE) is currently seldomly used to detect mechanical stresses in wooden building assets. This paper presents the results from a systematic literature review on AE NDT applied to monitor micro and macro fracture events in softwood, specifically Scots pine. This survey particularly investigates its application with respect to the tree rings density and grain angle inspection, as influencing factors w
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Burykina, S. I., S. P. Uzhevska, and N. V. Pylyak. "METHOD OF ASSESSING THE NEMATOCIDAL EFFECTIVENESS OF A BIOPREPA-RATION BASED ON PREDATORY MICROMYCETE AGAINST THE POTATO STEM NEMATODE." Microbiology&Biotechnology, no. 3(59) (December 20, 2023): 14–25. http://dx.doi.org/10.18524/2307-4663.2023.3(59).292392.

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Aim – Studing of methods for determining the effectiveness of Nematophagin BT against potato stem nematode in the laboratory. Materials and methods. For the experiment, potato tubers with signs of damage by the stem nematode Ditylenchus destructor Thorne, 1945 were selected. The method of treatment of cut potato tubers with the preparation was used. It was compared with the method of treatment of whole tubers in the laboratory. The effect of the microbiological nematicidal preparation (Nematofagin BT) developed by ITI Biotechnology of NAAS was determined. The effectiveness of the microbiologic
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Zeleneva, Yu V., Ph B. Gannibal, I. А. Kazartsev, and V. P. Sudnikova. "Molecular Identification, Effector genes and Virulence of Isolates of <i>Parastagonospora nodorum</i> from Altai Krai (Russia)." Микология и фитопатология 57, no. 5 (2023): 362–71. http://dx.doi.org/10.31857/s0026364823050124.

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Septoria blotches represent some of the most harmful wheat diseases that encompass all grain-producing countries worldwide. They are caused mainly by fungi of the genera Parastagonospora and Zymoseptoria. The aims of the research were to analyze the nucleotide sequences of two phylogenetically informative DNA loci, ITS and tub2, of Parastagonospora nodorum isolates from the Altai Krai, to detect the presence of Tox1, Tox3, ToxA effector genes and to study the virulence of the isolates. Microscopic analysis of fragments of affected plant tissue was used for primary identification of the Septori
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Rozprawy doktorskie na temat "Microscopie – Analyse informatique"

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Cazorla, Clément. "Analyse d'images en microscopie par réseaux de neurones dans un contexte frugal." Electronic Thesis or Diss., Université de Toulouse (2023-....), 2024. http://www.theses.fr/2024TLSES028.

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Dans ce manuscrit de thèse, nous explorons l'usage de réseaux de neurones dans un contexte frugal, c'est-à-dire avec peu de données d'entraînement, appliqué à des tâches d'analyse d'images de microscopie. Au cours de ces travaux, j'ai fourni un travail substantiel d'intégration dans des interfaces utilisateur ergonomiques. Celles-ci prennent la forme de plugins Napari, un logiciel open-source de visualisation d'images multi-dimensionnelles. Plus largement, ce travail permet de rapprocher les utilisateurs de microscopes et les technologies d'apprentissage profond, actuellement complexes à appré
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Bonnail, Nicolas. "Analyse des données, modélisation et commande pour la microscopie en champ proche utilisant des actionneurs piézoélectriques." Aix-Marseille 2, 2001. http://www.theses.fr/2001AIX22059.

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Dupé, François-Xavier. "Restauration et reconnaissance des formes dans des images avec bruit de Poisson : application à l'analyse des neurones en microscopies de fluorescence." Caen, 2010. http://www.theses.fr/2010CAEN2002.

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Dans le cadre de l'étude du cerveau, les biologistes et les médecins s'intéressent à de petites excroissances sur les dendrites appelées épines dendritiques. Ces épines jouent un rôle important au niveau des transmissions synaptiques. Elles sont observées par fluorescence avec un microscope confocal. Les images acquises sont difficiles à exploiter car elles sont 1) dégradées par le flou dû aux limites de la diffraction et du bruit, 2) les épines présentent une grande diversité morphologique et 3) une dendrite peut posséder une densité importante d'épines. Cette thèse se décompose donc en trois
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Camilleri, Fabrice. "Analyse de la morphologie cellulaire in vitro pour l'évaluation de la sécurité des petites molécules et des risques pour l'homme." Electronic Thesis or Diss., Université Côte d'Azur, 2024. http://www.theses.fr/2024COAZ4059.

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Le paradigme traditionnel de l'évaluation des risques des produits chimiques pour l'homme repose en grande partie sur des études menées sur des animaux de laboratoire. Cependant, les études in vivo sont longues, coûteuses, soulèvent des problèmes éthiques et ne sont pas considérées comme totalement pertinentes pour la physiologie humaine. En réponse, les autorités réglementaires encouragent l'adoption d'alternatives non animales pour l'évaluation des risques, basées sur des cultures de cellules humaines. Dans le cadre de cette évolution, plusieurs méthodes de nouvelle approche (NAM) sont en co
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Bruch, Jean-Frédéric. "Analyse du cordon ombilical par microscopie informatisée "HOME" (Highly Optimized Microscope Environment) : algorithmes de segmentation et de paramétrisation, ergonomie des interfaces homme-machine, applications médicales concrètes." Paris 12, 1996. http://www.theses.fr/1996PA120080.

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Ce travail traite de la mise au point d'un nouvel outil d'analyse morphometrique du cordon ombilical par la technique de microscopie informatisee home pour highly optimized microscope environment, afin de mieux caracteriser et comprendre les malies funiculaires dans les maladies vasculaires de la grossesse. On etablit un principe d'analyse angio-architecturale selon trois niveaux: (i) structural (anatomie, developpement) ; (ii) fonctionnel (hemodynamique, regulation paracrine ; (iii) relations structure/fonction (biomecanique, modelisation). Cette etape aboutit a (i) la specification de parame
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Andronov, Leonid. "Development of advanced methods for super-resolution microscopy data analysis and segmentation." Thesis, Strasbourg, 2018. http://www.theses.fr/2018STRAJ001.

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Parmi les méthodes de super-résolution, la microscopie par localisation de molécules uniques se distingue principalement par sa meilleure résolution réalisable en pratique mais aussi pour l’accès direct aux propriétés des molécules individuelles. Les données principales de la microscopie par localisation sont les coordonnées des fluorochromes, un type de données peu répandu en microscopie conventionnelle. Le développement de méthodes spéciales pour le traitement de ces données est donc nécessaire. J’ai développé les logiciels SharpViSu et ClusterViSu qui permettent d’effectuer les étapes de tr
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Marak, Laszlo. "On continuous maximum flow image segmentation algorithm". Phd thesis, Université Paris-Est, 2012. http://tel.archives-ouvertes.fr/tel-00786914.

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In recent years, with the advance of computing equipment and image acquisition techniques, the sizes, dimensions and content of acquired images have increased considerably. Unfortunately as time passes there is a steadily increasing gap between the classical and parallel programming paradigms and their actual performance on modern computer hardware. In this thesis we consider in depth one particular algorithm, the continuous maximum flow computation. We review in detail why this algorithm is useful and interesting, and we propose efficient and portable implementations on various architectures.
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Fadili, Jalal M. "Une exploration des problèmes inverses par les représentations parcimonieuses et l'optimisation non lisse." Habilitation à diriger des recherches, Université de Caen, 2010. http://tel.archives-ouvertes.fr/tel-01071774.

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Ce mémoire résume mon parcours de recherche lors des dix dernières années. Ces travaux de recherche se trouvent à la croisée des chemins entre les mathématiques appliquées et le traitement du signal et des images. Ils s'articulent autour du triptyque: (i) modélisation stochastique-estimation statistique; (ii) analyse harmonique computationnelle-représentations parcimonieuses; (iii) optimisation. Ces trois piliers constituent le socle théorique de mes activités pour développer des approches originales capables de résoudre des problèmes classiques en traitement d'images comme les problèmes inver
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Sotomayor, Gonzalez Miguel. "Analisi e sviluppo di una procedura di post-processing per immagini acquisite da telecamere in toni di grigio." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/20459/.

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Ai giorni nostri, la Microscopia è diventata una disciplina fortemente legata all’acquisizione di immagini digitali, in questo scenario, disporre di una telecamera in grado di acquisire immagini a colori, ad esempio una telecamera RGB, diventa fondamentale per varie discipline della Microscopia. Tuttavia, nel campo della Microscopia a Fluorescenza, dove si perde la correlazione cromaticità-tessuto e dove si contano fotoni emessi da sonde fluorescenti legate a particolari compartimenti sub-cellulari di interesse, sono tipicamente utilizzate telecamere in toni di grigio, molto più sensibili di q
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Conard, Didier. "Traitement d'images en analyse de défaillances de circuits intégrés par faisceau d'électrons." Grenoble INPG, 1991. http://tel.archives-ouvertes.fr/tel-00339510.

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Cette thèse présente l'étude et la réalisation d'un système automatique et intégré d'analyse de défaillances de circuits VLSI par faisceau d'électrons. Le principe d'analyse consiste a comparer les images représentant en contraste de potentiel le fonctionnement interne du circuit défaillant a celles d'un circuit de référence. L'application de cette technique de test a des circuits dont la structure détaillée est inconnue, a nécessité le développement d'un outil automatique permettant d'extraire les différences de contraste sur la totalité du circuit. L'automatisation s'est heurtée aux problème
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Książki na temat "Microscopie – Analyse informatique"

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Mutter, Walter P. Urinalysis. Edited by Christopher G. Winearls. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199592548.003.0006.

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Physicians have examined urine for over 6000 years. Urine microscopy was first employed to diagnose kidney disease in the seventeenth century and remains an indispensable tool. The value of urinalysis for diagnosis and management of renal and genitourinary disease is well accepted. Urinalysis aids in the diagnosis of renal disease especially in cases when a renal biopsy is not immediately available or is contraindicated. It is most informative when done by the treating physician with knowledge of the clinical context. Inspection is done by eye. Routine chemical analysis is done by dipstick but
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Hawkes, Peter W. Advances in Electronics and Electron Physics (Advances in Imaging and Electron Physics). Academic Press, 1990.

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Hawkes, Peter W. Advances in Electronics and Electron Physics (Advances in Imaging and Electron Physics). Academic Press, 1988.

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Hawkes, Peter W. Advances in Electronics and Electron Physics (Advances in Imaging and Electron Physics). Academic Press, 1990.

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Hawkes, Peter W. Advances in Electronics and Electron Physics (Advances in Imaging and Electron Physics). Academic Press, 1991.

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Hawkes, Peter W. Advances in Electronics and Electron Physics (Advances in Imaging and Electron Physics). Academic Press, 1986.

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Hawkes, Peter W. Advances in Electronics and Electron Physics (Advances in Imaging and Electron Physics). Academic Press, 1985.

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Hawkes, Peter W. Advances in Electronics and Electron Physics (Advances in Imaging and Electron Physics). Academic Press, 1989.

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Hawkes, Peter W. Advances in Electronics and Electron Physics (Advances in Imaging and Electron Physics). Academic Press, 1986.

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Hawkes, Peter W. Advances in Electronics and Electron Physics (Advances in Imaging and Electron Physics). Academic Press, 1986.

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Części książek na temat "Microscopie – Analyse informatique"

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Spence, Jackie. "Plant histology." In Plant Cell Biology. Oxford University PressOxford, 2001. http://dx.doi.org/10.1093/oso/9780199638666.003.0009.

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Abstract The microscope is one of the most important instruments used in biological research and it has contributed much to our knowledge of morphology and cell dynamics. Over the past ten years there have been many advances in light microscopical techniques including the development of the confocal microscope and improved image analysis software. However the need for simpler analytical techniques has certainly not decreased. Today molecular biologists and biochemists often require the light or fluorescence microscope to analyse gene expression patterns, mutant phenotypes, and structure-functi
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Mohite Ramesh, D., Trilok Ranjan Mudgal, and Krishan Kumar Kataria. "An Application of Magnetic and Geochemical Techniques to Determine Pollution Load In Leafy Vegetables in the Industrial Area." In Advances in Environmental Engineering and Green Technologies. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-9231-4.ch017.

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A study is carried out to evaluate the heavy metals contamination in leafy vegetables in Navi Mumbai. Samples of four leafy vegetables—spinach, radish, mayalu, and red mat—were collected from Navi Mumbai. Heavy metals are determined in washed and unwashed bulk samples using a XRF spectrometer by the turbo quant-powder method. For visual identification of natural and anthropogenic particulates, geochemical, magnetic measurements, and scanning electron microscopy analysis of some washed and unwashed vegetable samples are carried out. The observed data when compared with the data of WHO limit, Fe
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Streszczenia konferencji na temat "Microscopie – Analyse informatique"

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Xie, X. Sunney, and Robert C. Dunn. "Fluorescence Spectroscopy on a Single Molecule Basis with a Near-field Spectrometer." In Laser Applications to Chemical Analysis. Optica Publishing Group, 1994. http://dx.doi.org/10.1364/laca.1994.thd.4.

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Recent advances in near-field optical microscopy [1] have offered exciting possibilities for conducting molecular spectroscopy at the nanometer dimension. In particular, fluorescence detection of single chromophores and single proteins containing several chromophores have been achieved using this technique[2][3]. For chemical analysis and biological applications, fluorescence measurements with near-field optics will be particularly informative, providing spectroscopic information not accessible with other scanning probe techniques, such as SEM, STM and AFM.
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Demarest, James J., and Hong-Ying Zhai. "Highly Automated Transmission Electron Microscopy Tomography for Defect Understanding." In ISTFA 2011. ASM International, 2011. http://dx.doi.org/10.31399/asm.cp.istfa2011p0137.

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Abstract Imaging tomography by transmission electron microscopy (TEM) is a technique which has been growing in popularity in recent years, yet it has not been widely applied to semiconductor defect studies and root cause determination [1- 3]. In part this is due to the complex equipment, computing needs, and microscope time required to generate the various images which ultimately compose the data set. However, the latest generation of TEMs—with their high level of stability and automation—are greatly reducing the resource needs to create high quality and informative movies of defects rotating
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Leavers, V. F., and M. D. Hanlon. "Establishment of the Accuracy and Consistency of Using Automatic Image Analysis to Classify Wear Debris Particles." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-64385.

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Wear debris particle analysis is an equipment health monitoring technique used to identify possible failure modes in various engine components. One of the first stages in the analysis involves the examination under a microscope of particles collected from the component’s lubrication system on magnetic drain plugs and filters. However, the subjectivity of technicians’ judgements means that diagnosis may not be consistent between technicians. A software tool capable of automatically classifying the images of wear debris particles has been developed and tested using an 800-image database. It is s
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Kim, Beomjun, Seonghee Park, Juhyun Kim, et al. "Failure Analysis Approaches for Stacking Fault Defects in FinFET Devices." In ISTFA 2019. ASM International, 2019. http://dx.doi.org/10.31399/asm.cp.istfa2019p0313.

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Abstract In this paper, the stacking fault defects in FinFETs are described as the root cause of the PLL failure. Failure analysis approaches such as photon emission microscopy and nano probing were applied to pinpoint the exact stacking fault location in even transistor level and High resolution TEM confirmed the stacking fault defects in the Fin which was isolated by nano probing. RX local density was confirmed as the key factor in stacking fault generation by TCAD simulation. RX new mask with dummy addition was made to mitigate stress and was confirmed to be effective to reduce the compress
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Al Hamad, Mohammed, Denis Klemin, Mark Ma Shouxiang, and Wael Abdallah. "Digitally Derived Capillary Pressure Data for Reservoir Evaluation." In Middle East Oil, Gas and Geosciences Show. SPE, 2023. http://dx.doi.org/10.2118/213776-ms.

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Abstract Capillary pressure (Pc) is one of the fundamental parameters in formation evaluation. Currently, three methods are routinely used for Pc measurement; i.e., mercury injection, centrifuge, and porous plate. All three methods require testing of fluid displacement at capillary equilibrium conditions, an often-challenging condition to obtain, especially in low-quality rock samples. In this study, the ability to derive Pc data was investigated using digital rock (DR) physics techniques. Two sister carbonate outcrop samples were prepared. The samples were initially analyzed using thin-sectio
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Jumanov, I. I., and R. A. Safarov. "Optimization of recognition of micro-objects based on the use of morphometric characteristics of images." In III All-Russian Scientific Conference with International Participation "Science, technology, society: Environmental engineering for sustainable development of territories". Krasnoyarsk Science and Technology City Hall, 2022. http://dx.doi.org/10.47813/nto.3.2022.6.93-108.

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Constructive approaches, principles and methods of identification, recognition and classification of micro-objects based on the use of neural networks and mechanisms for extracting morphometric characteristics of images have been developed. Information processing technology based on obtaining images of micro-objects from a photo, video camera, digital microscope is proposed. A technique has been developed for interactive measurement of the size of micro-objects, counting, determining the structure, conducting statistical analysis, isolating and segmenting fragments, selecting informative point
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Raporty organizacyjne na temat "Microscopie – Analyse informatique"

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Glazer, Itamar, Alice Churchill, Galina Gindin, and Michael Samish. Genomic and Organismal Studies to Elucidate the Mechanisms of Infectivity of Entomopathogenic Fungi to Ticks. United States Department of Agriculture, 2013. http://dx.doi.org/10.32747/2013.7593382.bard.

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The overall goal of this research was to elucidate the factors affecting early development of Metarhizium spp. (previously named M. anisopliae) on ticks or tick cuticle extracts and the molecular basis of these early infection processes. The original objectives were: 1. Characterize the pre-penetration events (adhesion, germination and appressorium formation) of spores of M. anisopliae strains with high or low virulence during tick infection. 2. Create GFP-expressing strains of M. anisopliae tick pathogens having high and low virulence to compare their progress of infection by microscopy. 3. U
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