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47 resultados encontrados.

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Análise invasiva e não invasiva do fuso meiótico de oócitos humanos obtidos de ciclos estimulados: dados preliminares Invasive and noninvasive analysis of the meiotic spindle of human oocytes obtained from stimulate cycles: preliminary results
Artigo
Artigo
Análise invasiva e não invasiva do fuso meiótico de oócitos humanos obtidos de ciclos estimulados: dados preliminares Invasive and noninvasive analysis of the meiotic spindle of human oocytes obtained from stimulate cycles: preliminary results
Luciana Azôr Dib et al · Federação Brasileira das Sociedades de Ginecologia e Obstetrícia · 2012 · ISSN 0100-7203
OBJETIVOS: Avaliar a concordância entre as técnicas de microscopia de polarização e microscopia confocal na avaliação do fuso meiótico de oócitos humanos maturados in vivo. MÉTODOS: Estudo prospectivo que avalio...
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Optical force microscopy: combining light with atomic force microscopy for nanomaterial identification
Artigo
Artigo
Optical force microscopy: combining light with atomic force microscopy for nanomaterial identification
Jahan Nusrat et al · Wiley · 2019 · ISSN 2192-8606
Scanning probe techniques have evolved significantly in recent years to detect surface morphology of materials down to subnanometer resolution, but without revealing spectroscopic information. In this review, we discuss ...
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Oócitos aparentemente maduros injetados em telófase I apresentam piores resultados de reprodução assistida Apparently matured oocytes injected in telophase I have worse outcomes from assisted reproduction
Artigo
Artigo
Oócitos aparentemente maduros injetados em telófase I apresentam piores resultados de reprodução assistida Apparently matured oocytes injected in telophase I have worse outcomes from assisted reproduction
Luciana Azôr Dib et al · Federação Brasileira das Sociedades de Ginecologia e Obstetrícia · 2012 · ISSN 0100-7203
OBJETIVO: Avaliar o estágio de maturação nuclear de oócitos com o primeiro corpúsculo polar (CP) visível de pacientes inférteis submetidas à estimulação ovariana para injeção intracitoplasmática de espermato...
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Diffraction order-engineered polarization-dependent silicon nano-antennas metagrating for compact subtissue Mueller microscopy
Artigo
Artigo
Diffraction order-engineered polarization-dependent silicon nano-antennas metagrating for compact subtissue Mueller microscopy
Li Qingyuan et al · Wiley · 2025 · ISSN 2192-8614
A polarization-dependent silicon nano-antennas metagrating (PSNM) is proposed for parallel polarization transformation by engineering diffraction orders, upon which a compact Mueller microscopy system is implemented for ...
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High numerical aperture imaging allows chirality measurement in individual collagen fibrils using polarization second harmonic generation microscopy
Artigo
Artigo
High numerical aperture imaging allows chirality measurement in individual collagen fibrils using polarization second harmonic generation microscopy
Harvey MacAulay et al · Wiley · 2023 · ISSN 2192-8606
Second harmonic generation (SHG) microscopy is a commonly used technique to study the organization of collagen within tissues. However, individual collagen fibrils, which have diameters much smaller than the resolution o...
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Electrically-switched differential microscopy based on computing liquid-crystal platforms
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Artigo
Electrically-switched differential microscopy based on computing liquid-crystal platforms
Liu Shuoqing et al · Wiley · 2024 · ISSN 2192-8614
Detection of transparent phase specimens especially biological cells with desired contrasts is of great importance in visual display and medical diagnosis. Due to the pure-phase nature, conventional detection approaches ...
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Optimizing the localization precision in coherent scattering microscopy using structured light
Artigo
Artigo
Optimizing the localization precision in coherent scattering microscopy using structured light
Hohenester Ulrich et al · Wiley · 2025 · ISSN 2192-8614
We employ the concept of quantum Fisher information to optimize the focused excitation fields in coherent scattering microscopy. Our optimization goal is to achieve the best possible localization precision for small scat...
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Proving Geobacter biofilm connectivity with confocal Raman microscopy
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Artigo
Proving Geobacter biofilm connectivity with confocal Raman microscopy
Robuschi, Luciana et al · Elsevier Science Sa · 2016 · ISSN 1572-6657
We report here an . in-vivo, non-invasive, depth profiling study on an electrically-active biofilm by Confocal Raman Microscopy. Films based on . Geobacter sulfurreducens bacteria were grown onto an indium tin oxide (ITO...
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Qijia Rougan Formula alleviates liver fibrosis by inhibiting NLRP3-mediated pyroptosis and regulating macrophage polarization
Artigo
Artigo
Qijia Rougan Formula alleviates liver fibrosis by inhibiting NLRP3-mediated pyroptosis and regulating macrophage polarization
Xin Ding et al · Frontiers Media S.A · 2026 · ISSN 1664-3224
BackgroundStage F3 liver fibrosis represents a critical phase for intercepting the progression toward irreversible cirrhosis. Despite its clinical significance, effective interventions remain scarce. Clinical observation...
LCC LCC:Immunologic diseases. AllergyIdioma Inglés
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Super-resolution optical microscopy using cylindrical vector beams
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Artigo
Super-resolution optical microscopy using cylindrical vector beams
Liu Min et al · Wiley · 2022 · ISSN 2192-8614
Super-resolution optical microscopy, which gives access to finer details of objects, is highly desired for fields of nanomaterial, nanobiology, nanophotonics, etc. Many efforts, including tip optimization and illuminatio...
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Analysis of artificial opals by scanning near field optical microscopy
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Artigo
Analysis of artificial opals by scanning near field optical microscopy
Barrio, J. et al · American Institute of Physics · 2011 · ISSN 0021-8979
Herein we present a detailed analysis of the optical response of artificial opal films realized employing a near-field scanning optical microscope in collection and transmission modes. Near-field patterns measured at the...
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Confocal polarization tomography of dielectric nanocavities
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Artigo
Confocal polarization tomography of dielectric nanocavities
Schröder Frederik et al · Wiley · 2025 · ISSN 2192-8614
We employ polarization tomography to characterize the modal properties of a dielectric nanocavity with sub-wavelength mode confinement. Our analysis of reflection spectra shows that the Fano-lineshape depends strongly on...
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Imaging the crystal orientation of 2D transition metal dichalcogenides using polarization-resolved second-harmonic generation
Artigo
Artigo
Imaging the crystal orientation of 2D transition metal dichalcogenides using polarization-resolved second-harmonic generation
Maragkakis George Miltos et al · Editorial Office of Opto-Electronic Journals Group, Institute of Optics and Electronics, CAS, China · 2019 · ISSN 2096-4579
We use laser-scanning nonlinear imaging microscopy in atomically thin transition metal dichalcogenides (TMDs) to reveal information on the crystalline orientation distribution, within the 2D lattice. In particular, we pe...
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Comprehensive study of garlic peel extract coating against mild steel corrosion in saline medium
Artigo
Artigo
Comprehensive study of garlic peel extract coating against mild steel corrosion in saline medium
Bindu Mangla et al · Springer · 2026 · ISSN 2730-7700
Abstract Natural materials (NMs) have emerged as better alternatives for the mitigation of corrosion of metals. NMs can be used as both inhibitors and coatings; however, they have been used mostly as inhibitors. In this ...
LCC LCC:Chemical engineeringIdioma Inglés
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Flexible fiber-laser ultrasound sensor for multiscale photoacoustic imaging
Artigo
Artigo
Flexible fiber-laser ultrasound sensor for multiscale photoacoustic imaging
Bai-Ou Guan et al · Editorial Office of Opto-Electronic Journals Group, Institute of Optics and Electronics, CAS, China · 2021 · ISSN 2096-4579
Photoacoustic imaging (PAI) is a noninvasive biomedical imaging technology capable of multiscale imaging of biological samples from organs down to cells. Multiscale PAI requires different ultrasound transducers that are ...
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Fluorescence imaging with tailored light
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Artigo
Fluorescence imaging with tailored light
Tang Jialei et al · Wiley · 2019 · ISSN 2192-8606
Fluorescence microscopy has long been a valuable tool for biological and medical imaging. Control of optical parameters such as the amplitude, phase, polarization, and propagation angle of light gives fluorescence imagin...
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Peculiarities in structure formation and corrosion of cast quasicrystalline Al63Cu25Fe12 and Al63Co24Cu13 alloys in sodium chloride aqueous solution
Artigo
Artigo
Peculiarities in structure formation and corrosion of cast quasicrystalline Al63Cu25Fe12 and Al63Co24Cu13 alloys in sodium chloride aqueous solution
O. V. Sukhova et al · Vasyl Stefanyk Carpathian National University · 2020 · ISSN 1729-4428
In this work the structure and corrosion behavior of quasicrystalline cast Al63Cu25Fe12 and Al63Co24Cu13 alloys in 5-% sodium chloride solution (рН 6.9–7.1) were investigated. The alloys were cooled at 5 К/s. The st...
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Darkfield colors from multi-periodic arrays of gap plasmon resonators
Artigo
Artigo
Darkfield colors from multi-periodic arrays of gap plasmon resonators
Ng Ray Jia Hong et al · Wiley · 2020 · ISSN 2192-8614
We present results on colors of metal disk arrays viewed under a darkfield microscope and show that the darkfield colors can be manipulated independently of the brightfield colors. We investigate the appearance of colors...
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Exciton-dielectric mode coupling in MoS2 nanoflakes visualized by cathodoluminescence
Artigo
Artigo
Exciton-dielectric mode coupling in MoS2 nanoflakes visualized by cathodoluminescence
Vu Dung Thi et al · Wiley · 2022 · ISSN 2192-8614
Two-dimensional (2D) transition metal dichalcogenides (TMDCs), possessing unique exciton luminescence properties, have attracted significant attention for use in optical and electrical devices. TMDCs are also high refrac...
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A comprehensive multidisciplinary approach for identifying asbestos exposure among underground workers
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Artigo
A comprehensive multidisciplinary approach for identifying asbestos exposure among underground workers
Salvado, Alejandro et al · Associação Nacional de Medicina do Trabalho · 2025 · ISSN 1679-4435
Introduction: Inhalation of asbestos fibers can lead to a range of diseases, including asbestosis, pleural plaques, lung cancer, and malignant mesothelioma. Despite regulatory efforts, asbestos-related diseases remain a ...
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A mode generator and multiplexer at visible wavelength based on all-fiber mode selective coupler
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Artigo
A mode generator and multiplexer at visible wavelength based on all-fiber mode selective coupler
Yao Han et al · Wiley · 2020 · ISSN 2192-8614
Using an all-fiber mode selective coupler (MSC) at the visible band, here we experimentally demonstrate a generating and wavelength multiplexing scheme for the cylindrical vector (CV) and vortex beams (VBs). The proposed...
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Anticorrosive and Antibacterial Evaluation of ZnO Nanoscale Sheets Electrosynthesized onto Ti6Al4V and Nitinol Alloys Previously Modified by Chemical Oxidation in H2O2
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Artigo
Anticorrosive and Antibacterial Evaluation of ZnO Nanoscale Sheets Electrosynthesized onto Ti6Al4V and Nitinol Alloys Previously Modified by Chemical Oxidation in H2O2
Martínez, Alejandra Leonor et al · Springer · 2024 · ISSN 1059-9495
Titanium and its alloys have a crucial function in the biomaterial field. Nonetheless, susceptibility to infections is an important drawback that needs to be considered. In this context, current research on antibacterial...
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Chiral phase-imaging meta-sensors
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Artigo
Chiral phase-imaging meta-sensors
Erturan Ahmet M. et al · Wiley · 2025 · ISSN 2192-8614
Light waves possess multiple degrees of freedom besides intensity, including phase and polarization, that often contain important information but require complex and bulky systems for their measurement. Here we report a ...
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Current Response Enhancement According to the Doping Anion’s Nature in Redox Polyelectrolyte─Enzyme Assemblies
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Artigo
Current Response Enhancement According to the Doping Anion’s Nature in Redox Polyelectrolyte─Enzyme Assemblies
Coria Oriundo, Lucy Linders et al · American Chemical Society · 2022 · ISSN 7759-7769
High-power density output in enzymatic fuel cells is a key feature to reduce the size of self-powered implantable medical devices. Electron transfer mediated through redox polyelectrolytes allows the transport of electro...
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