Results 91 to 100 of about 841,302 (305)

Staphyloma-related chorioretinal folds

American Journal of Ophthalmology Case Reports, 2020
Purpose: To report a case of bilateral idiopathic chorioretinal folds that seemed to be related to an atypical staphyloma. Observations: A 49-year old man without medical history consulted for slight vision loss and metamorphopsia in the left eye.
Audrey Giocanti-Auregan, Carlo Lavia, Alain Gaudric, Typhaine Grenet, Salomon Y. Cohen   +4 more
doaj   +1 more source

Investigation of Hamamatsu H8500 phototubes as single photon detectors [PDF]

, 2015
We have investigated the response of a significant sample of Hamamatsu H8500 MultiAnode PhotoMultiplier Tubes (MAPMTs) as single photon detectors, in view of their use in a ring imaging Cherenkov counter for the CLAS12 spectrometer at the Thomas ...
Hoek, M., Lucherini, V., Mirazita, M., Montgomery, R. A., Orlandi, A., Pereira, S. Anefalos, Pisano, S., Rossi, P., Viticchiè, A., Witchger, A.   +9 more
core   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

FEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli, Mohammad Nour Alsamsam, Ugnė Bagdonaitė, Van Truc Vu, Chun‐Jen Huang, Polina Kuzhir, Mindaugas Zaremba, Aurimas Kopūstas, Marijonas Tutkus   +8 more
wiley   +1 more source

Detection of tumor mass based on laser scanning imaging

مجلة النهرين للعلوم الهندسية, 2017
Optical methods are widely used for medical diagnostic and therapeutic purposes. The use of laser source as non-ionized radiation in the imaging is considered safe, and has advantages more than the other radiological methods The laser application in ...
Munqith S. Dawood, Eman Ghadhban Khalil, Halah Hadi Saleh   +2 more
doaj  

Sample size and power determination when limited preliminary information is available

BMC Medical Research Methodology, 2017
Background We describe a novel strategy for power and sample size determination developed for studies utilizing investigational technologies with limited available preliminary data, specifically of imaging biomarkers.
Christine E. McLaren, Wen-Pin Chen, Thomas D. O’Sullivan, Daniel L. Gillen, Min-Ying Su, Jeon H. Chen, Bruce J. Tromberg   +6 more
doaj   +1 more source

Multi-Color Imaging of Magnetic Co/Pt Multilayers [PDF]

, 2017
We demonstrate for the first time the realization of a spatial resolved two color, element-specific imaging experiment at the free-electron laser facility FERMI.
Capotondi, F., Eisebitt, Stefan, Günther, Christian M., Jal, Emmanuelle, Korff Schmising, Clemens von, Lüning, Jan, Mahieu, B., Merhe, A., Pedersoli, Emanuele, Pfau, Bastian, Schneider, Michael, Vodungbo, Boris, Weder, David, Willems, Felix   +13 more
core   +2 more sources

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

A combined experimental and theoretical study on realizing and using laser controlled torsion of molecules

, 2009
It is demonstrated that strong laser pulses can introduce torsional motion in the axially chiral molecule 3,5-diflouro-3',5'-dibromo-biphenyl (DFDBrBPh).
Holmegaard, L., Johansson, M. P., Jorgensen, K. A., Kumarappan, V., Madsen, C. B., Madsen, L. B., Poulsen, T. B., Stapelfeldt, H., Viftrup, S. S.   +8 more
core   +1 more source

Large‐scale bidirectional arrayed genetic screens identify OXR1 and EMC4 as modifiers of αSynuclein aggregation

FEBS Open Bio, EarlyView.
Activation of the mitochondrial protein OXR1 increases pSyn129 αSynuclein aggregation by lowering ATP levels and altering mitochondrial membrane potential, particularly in response to MSA‐derived fibrils. In contrast, ablation of the ER protein EMC4 enhances autophagic flux and lysosomal clearance, broadly reducing α‐synuclein aggregates.
Sandesh Neupane, Lea Nikolić, Lorenzo Maraio, Thomas Goiran, Nathan Karpilovsky, Stefano Sellitto, Vangelis Bouris, Jiang‐An Yin, Ronald Melki, Edward A Fon, Adriano Aguzzi, Elena De Cecco   +11 more
wiley   +1 more source

Experimental comparison of autodyne and heterodyne laser interferometry using a Nd:YVO4 microchip laser

, 2011
Using a Nd:YVO4 microchip laser with a relaxation frequency in the megahertz range, we have experimentally compared a heterodyne interferometer based on a Michelson configuration with an autodyne interferometer based on the laser optical feedback imaging
Blaize, Bramati, Eric Lacot, Gilles, Hugon, Hugues Guillet de Chatellus, Kawai, Ko, Kolobov, Lacot, Lacot, Lacot, Lacot, Lacot, Laroche, Muzet, Okamoto, Olivier Hugon, Olivier Jacquin, Otsuka, Otsuka, Otsuka, Otsuka, Otsuka, Suddo, Wilfried Glastre, Witomski, Zaykowski   +27 more
core   +2 more sources