Results 21 to 30 of about 26,276 (188)

Cutaneous collagenous vasculopathy: light and transmission electron microscopy [PDF]

Anais Brasileiros de Dermatologia, 2019
Cutaneous collagenous vasculopathy is a rare acquired idiopathic microangiopathy characterized by progressive development of diffuse asymptomatic telangiectasias and histologically by accumulation of collagen type IV around the affected vessels.
Debora Sarzi Sartori, Hiram Larangeira de Almeida Jr., Timotio Volnei Dorn, Caroline Pires Ruas   +3 more
doaj   +1 more source

Atomic-scale imaging of electron sensitive zeolites with aberration corrected transmission electron microscopy

Open Ceramics, 2023
The spatial resolution of transmission electron microscopes (TEMs) and scanning transmission electron microscopes (STEMs) has been drastically improved by introducing aberration correction.
Kaname Yoshida, Atsushi Nakahira
doaj   +1 more source

Nanostructured, mesoporous Au/TiO2 model catalysts – structure, stability and catalytic properties

Beilstein Journal of Nanotechnology, 2011
Aiming at model systems with close-to-realistic transport properties, we have prepared and studied planar Au/TiO2 thin-film model catalysts consisting of a thin mesoporous TiO2 film of 200–400 nm thickness with Au nanoparticles, with a mean particle size
Matthias Roos, Dominique Böcking, Kwabena Offeh Gyimah, Gabriela Kucerova, Joachim Bansmann, Johannes Biskupek, Ute Kaiser, Nicola Hüsing, R. Jürgen Behm   +8 more
doaj   +1 more source

Transmission Electron Microscopy for Tobacco Chloroplast Ultrastructure

Bio-Protocol, 2015
The chloroplast is the site of photosynthesis that enabled and sustains aerobic life on Earth. Chloroplasts are relatively large organelles with a diameter of ~5 μm and width of ~2.5 μm, and so can be readily analysed by electron microscopy.
lina Yin, Shiwen Wang, Norihiro Shimomura, Kiyoshi Tanaka   +3 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Electron counting detectors in scanning transmission electron microscopy via hardware signal processing

Nature Communications, 2023
Transmission electron microscopy is a pivotal instrument in materials and biological sciences due to its ability to provide local structural and spectroscopic information on a wide range of materials.
Jonathan J. P. Peters, Tiarnan Mullarkey, Emma Hedley, Karin H. Müller, Alexandra Porter, Ali Mostaed, Lewys Jones   +6 more
doaj   +1 more source

Comprehensive profiling of lncRNAs and mRNAs enriched in small extracellular vesicles for early noninvasive detection of colorectal cancer: diagnostic panel assembly and extensive validation

Molecular Oncology, EarlyView.
Small extracellular vesicles are a promising source of diagnostic molecules. We conducted a comprehensive study, including transcriptome profiling and RT‐qPCR validation on large cohorts of samples. Diagnostic panels enabling sensitive detection of colorectal cancer and precancerous lesions were established. Some molecules were differentially expressed
Petra Vychytilova‐Faltejskova, Marketa Pavlikova, Lucie Pifkova, Robin Jugas, Tana Machackova, Lenka Radova, Milana Sachlova, Renata Bartosova, Tetiana Samoilenko, Zuzana Feckova, Jana Orlickova, Erika Slamova, Elleni Ponechal Michu, Dagmar Al Tukmachi, Michaela Ruckova, Martina Vodinska, Jan Kotoucek, Tina Catela Ivkovic, Marie Boudna, Lucia Bohovicova, Teodor Stanek, Jana Halamkova, Martin Svoboda, Vladimir Prochazka, Tomas Grolich, Zdenek Kala, Ondrej Slaby   +26 more
wiley   +1 more source

Adaptaquin is selectively toxic to glioma stem cells through disruption of iron and cholesterol metabolism

Molecular Oncology, EarlyView.
Adaptaquin selectively kills glioma stem cells while sparing differentiated brain cells. Transcriptomic and proteomic analyses show Adaptaquin disrupts iron and cholesterol homeostasis, with iron chelation amplifying cytotoxicity via cholesterol depletion, mitochondrial dysfunction, and elevated reactive oxygen species.
Adrien M. Vaquié, Davod R. Shah, Eliane E. S. Brechbühl, Michael McNicholas, Zhaoyang Xu, John H. Stockley, Laura Morcom, Diana Gold Diaz, Gemma C. Girdler, Rachel V. Seear, Gabriel Balmus, Rajiv R. Ratan, Harry Bulstrode, James A. Nathan, Manav Pathania, Kevin M. Brindle, David H. Rowitch   +16 more
wiley   +1 more source

Oriented attachment explains cobalt ferrite nanoparticle growth in bioinspired syntheses

Beilstein Journal of Nanotechnology, 2014
Oriented attachment has created a great debate about the description of crystal growth throughout the last decade. This aggregation-based model has successfully described biomineralization processes as well as forms of inorganic crystal growth, which ...
Annalena Wolff, Walid Hetaba, Marco Wißbrock, Stefan Löffler, Nadine Mill, Katrin Eckstädt, Axel Dreyer, Inga Ennen, Norbert Sewald, Peter Schattschneider, Andreas Hütten   +10 more
doaj   +1 more source

ELECTRON TRANSMISSION MICROSCOPY

Le Journal de Physique Colloques, 1974
The purpose of this short lecture is to explain why defects are imaged in the electron microscope, and to emphasize that a good understanding of the theory can lead to important informations about the defects. First, the different notions and parameters describing the diffraction of electrons by a perfect foil are introduced and discussed to some ...
openaire   +3 more sources