Results 81 to 90 of about 2,627,966 (379)

Pre‐analytical optimization of cell‐free DNA and extracellular vesicle‐derived DNA for mutation detection in liquid biopsies

Molecular Oncology, EarlyView.
Pre‐analytical handling critically determines liquid biopsy performance. This study defines practical best‐practice conditions for cell‐free DNA (cfDNA) and extracellular vesicle–derived DNA (evDNA), showing how processing time, storage conditions, tube type, and plasma input volume affect DNA integrity and mutation detection.
Jonas Dohmen, Lucrezia De Santis, Bret M. Stephens, Vincent Bernard, Jörg C. Kalff, Lara Braun, Phillipp Leyendecker, Johannes Röttgen, Daniel Weissinger, Anirban Maitra, Paola A. Guerrero, Alexander Semaan   +11 more
wiley   +1 more source

Tests of Sapphire Crystals Produced with Different Growth Processes for Ultra-stable Microwave Oscillators

, 2015
We present the characterization of 8-12 GHz whispering gallery mode resonators machined in high-quality sapphire crystals elaborated with different growth techniques.
Dubois, Benoit, Fluhr, Christophe, Giordano, Vincent, Grop, Serge   +3 more
core   +3 more sources

A comparative study of path loss models in the ultra-high frequency band in a vegetated environment [PDF]

, 2022
Enobong Patrick Obot, Michael U. Onuu, John Ubi Arikpo, Christian N. Nwosu   +3 more
openalex   +1 more source

Investigation of laser assisted ultra-high frequency induction deposition method: Processes, fluid flow, and microstructure characteristic

Journal of Materials Research and Technology, 2020
In this study, a laser assisted ultra-high frequency (UHF) induction deposition method is proposed. The proposed method uses UHF induction heat as the main heat source to melt the deposited metal.
R. Sun, Yongjun Shi, Xiaogang Wang, Yankuo Guo, Xiaoyu Zhou   +4 more
semanticscholar   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

Molecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau, Leonor Garcia, Hugo Arnold, Antonija Hanžek, Maialen Arrieta, Laurent R Gauthier, Christine Granotier‐Beckers, François D Boussin, Amaury Herbet, Marie Hautière, Valentin Asei‐Ceschino, Clémentin Jacques, Laura Brard, Thomas Harnois, Valérie Coronas, Bruno Constantin, Aurélien Chatelier, Jean Chemin, Serge Urbach, Martial Seveno, Szimonetta Hideg, Chantal Ripoll, Kasandra Aguilar‐Cázarez, Min Zheng, Guo‐Hao Huang, Sheng‐Qing Lv, Lei Zhang, Philippe Rondard, Laurent Prezeau, Jean‐Philippe Pin, Hugues Duffau, Luc Bauchet, Valérie Rigau, Franck Denat, Charles Truillet, Didier Boquet, Jean‐Philippe Hugnot   +36 more
wiley   +1 more source

Ultra high frequency volatility estimation with dependent microstructure noise [PDF]

We analyze the impact of time series dependence in market microstructure noise on the properties of estimators of the integrated volatility of an asset price based on data sampled at frequencies high enough for that noise to be a dominant consideration ...
Ait-Sahalia, Yacine, Mykland, Per A., Zhang, Lan   +2 more
core   +3 more sources

Ultra-high Accuracy Microwave Positioning System based on Free Space Frequency Synchronization [PDF]

, 2021
Qiang Zhao, Yuhao Chen, Z.B. Wang, L.J. Wang   +3 more
openalex   +1 more source

Investigation of sensitivity of the ultra‐high frequency partial‐discharge detection technology for micro‐crack in epoxy insulator in GIS

High Voltage, 2020
The ultra-high frequency (UHF) method has been widely used in a gas-insulated system (GIS) for partial-discharge detection, and many achievements have been realised.
Jiangrong Cheng, Yang Xu, Dengwei Ding, Weidong Liu   +3 more
semanticscholar   +1 more source

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

Molecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch, Isabel Vogel, Sina Nokodian, Johanna Moeller, Antonia Blechschmidt, Vicky Hecht, Vanessa Kuentzel, Katharina Thiedig, Melissa Schwab, Oliver Schilling, Holger Bronger, Marion Kiechle, Viktor Magdolen, Tobias Dreyer   +13 more
wiley   +1 more source

Field Applications of Ultra High Frequency Techniques for Defect Detection in GIS

Sensors, 2018
The reliable and stable operation of power apparatus is important for the development of GIS. It is important to utilize condition monitoring technologies and anticipate possible failures in advance.
Jun Xiong, Yuan Wang, Guo-Ming Ma, Qiang Zhang, Shu-Sheng Zheng   +4 more
doaj   +1 more source