Results 41 to 50 of about 1,312,739 (385)
A case of trichorrhexis nodosa
Pifu-xingbing zhenliaoxue zazhi, 2022 We report a case of trichorrhexis nodosa. A 27-year-old female presented with white nodules of hair that were easily broken for 17 years. Dermatological examination showed that the hair was sparse, dry, and there were many tiny granular white nodules ...
Sha XIAO, Tao GAO, Qingchun DIAO
doaj +1 more source
Imaging doubled shot noise in a Josephson scanning tunneling microscope [PDF]
Phys. Rev. B 100, 104506 (2019), 2019 We have imaged the current noise with atomic resolution in a Josephson scanning tunneling microscope with a Pb-Pb junction. By measuring the current noise as a function of applied bias, we reveal the change from single electron tunneling above the superconducting gap energy to double electron charge transfer below the gap energy when Andreev processes ...
arxiv +1 more source
Dental Wear: A Scanning Electron Microscope Study
BioMed Research International, 2014 Dental wear can be differentiated into different types on the basis of morphological and etiological factors. The present research was carried out on twelve extracted human teeth with dental wear (three teeth showing each type of wear: erosion, attrition,
L. Levrini +2 more
semanticscholar +1 more source
Transport Simulations on Scanning Transmission Electron Microscope Images of Nanoporous Shale
Energies, 2020 Digital rock physics is an often-mentioned approach to better understand and model transport processes occurring in tight nanoporous media including the organic and inorganic matrix of shale.
Laura Frouté +4 more
doaj +1 more source
Examination of mycological samples by means of the scanning electron microscope
Revista da Sociedade Brasileira de Medicina Tropical, 1973 Three species of Siphomycetes: Rhizopus arhizus, Rhizopus equinus and Rhizopus nigricans, as well as a Septomycete: Emericella nidulans, have been examined by means of a scanning electron microscope.
M. Thibaut, M. Ansel
doaj +3 more sources
Science and Engineering of Composite Materials, 2013 The paper presents the processing, mechanical and sliding wear characterization of particulate filled cement by-pass dust and carbon fiber (fixed) reinforced homogeneous and functionally graded vinyl ester composites.
Gangil Brijesh +2 more
doaj +1 more source
Teaching Microscopy Remotely: Two Engaging Options
Journal of Microbiology & Biology Education, 2022 The rapid switch to remote teaching with the onset of the COVID-19 pandemic forced educators to become resourceful and creative to meet course learning objectives. This was especially challenging for undergraduate microbiology laboratory exercises.
Kathryn A. Lionetti, Heather Townsend
doaj +1 more source
The trajectories of secondary electrons in the scanning electron microscope [PDF]
Scanning, 2006 AbstractThree‐dimensional simulations of the trajectories of secondary electrons (SE) in the scanning electron microscope have been performed for plenty of real configurations of the specimen chamber, including all its basic components. The primary purpose was to evaluate the collection efficiency of the Everhart‐Thornley detector of SE and to reveal ...
Ilona Müllerová, Ivo Konvalina
openaire +3 more sources
Advanced Biology, EarlyView.Hypoxia promotes the epithelial‐mesenchymal transition (EMT) of renal tubular epithelial cells via the SIRT1‐FoxO1‐FoxO3‐autophagy pathway, thereby resulting in the fibrosis of renal tubular epithelial cells. Activation of SIRT1 or induction of autophagy inhibits this process, alleviating hypoxia‐induced fibrosis.
Guangyu Wang +6 more
wiley +1 more source
Scanning electron microscope studies of Avena coleoptiles during primary leaf emergence
Acta Societatis Botanicorum Poloniae, 2014 A scanning electron microscope study of the fine structure of coleoptiles of Avena sativa L. cv. Clintford has revealed information about the relationship between aspects of coleoptilar structure and the emergence of the primary leaf. Stomata are located
Norman R. Dollahon +3 more
doaj +1 more source