Results 11 to 20 of about 587,882 (318)

Transcatheter aortic valve implantation. First experience of minimally invasive treatment in the Republic of Moldova [PDF]

, 2020
Background: Aortic stenosis (AS) is the most prevalent primary heart valve disease and the third most prevalent cardiovascular disease in the world, having a severe and slowly progressive evolution.
Beiu, Cătălina, Surev, Artiom, Vasa-Nicotera, Mariuca, Moscalu, Vitalie, Grib, Andrei, Abras, Marcel, Popovici, Ion   +6 more
core   +1 more source

New species of Sorbus (Rosaceae) for the flora of the Nakhchivan Autonomous Republic (Azerbaijan)

Biosystems Diversity, 2018
As a result of perennial researches conducted, as well as the analysis of the herbaria materials and literature sources during expeditions to the various areas of the Nakhchivan Autonomous Republic during 2004–2017, the following new species of rowans ...
A. M. Ibrahimov, A. V. Matsyura
doaj   +1 more source

Adaptive current tDCS up to 4 mA

Brain Stimulation, 2020
Background: Higher tDCS current may putatively enhance efficacy, with tolerability the perceived limiting factor. Objective: We designed and validated electrodes and an adaptive controller to provide tDCS up to 4 mA, while managing tolerability.
Niranjan Khadka, Helen Borges, Bhaskar Paneri, Trynia Kaufman, Electra Nassis, Adantchede L. Zannou, Yungjae Shin, Hyeongseob Choi, Seonghoon Kim, Kiwon Lee, Marom Bikson   +10 more
doaj   +1 more source

1D finite element for modelling of turbine blade vibration in the field of centrifugal forces

Applied and Computational Mechanics, 2019
The paper deals with the modelling of turbine blade vibrations by means of a novel 1D finite element that has only 16 degrees of freedom. Assuming linear elastic behaviour of the blade material and considering small displacements and strains, the derived
Dupal J., Zajíček M., Lukeš V.
doaj   +1 more source

Generalized modal reduction method for the dynamic analysis of rotating mechanical systems

Applied and Computational Mechanics, 2020
The paper proposes modal reduction method of the dynamic systems composed of linear nonconservative subsystems coupled by nonlinear discrete couplings.
Zeman V., Hlaváč Z.
doaj   +1 more source

Was size of healthcare institution a factor affecting changes in healthcare utilisation during the COVID-19 pandemic in Korea? A retrospective study design analysing national healthcare big data

BMJ Open, 2022
Objectives Many small-sized healthcare institutions play a critical role in communities by preventing infectious diseases. This study examines how they have been impacted by the global COVID-19 pandemic compared with large hospitals.Design This study ...
Chris Lane, Hyun-Ji Lee, Young-Taek Park, Jinhyung Lee   +3 more
doaj   +1 more source

Existence of analytical solution, stability assessment and periodic response of vibrating systems with time varying parameters

Applied and Computational Mechanics, 2020
The paper is focused on the solution of a vibrating system with one-degree-of-freedom with the objective to deal with the method for periodical response calculation (if exists) reminding Harmonic Balance Method of linear systems having time dependent ...
Dupal J., Zajíček M.
doaj   +1 more source

LIPSS-based functional surfaces produced by multi-beam nanostructuring with 2601 beams and real-time thermal processes measurement

Scientific Reports, 2021
A unique combination of the ultrashort high-energy pulsed laser system with exceptional beam quality and a novel Diffractive Optical Element (DOE) enables simultaneous production of 2601 spots organized in the square-shaped 1 × 1 mm matrix in less than 0.
P. Hauschwitz, J. Martan, R. Bičišťová, C. Beltrami, D. Moskal, A. Brodsky, N. Kaplan, J. Mužík, D. Štepánková, J. Brajer, D. Rostohar, J. Kopeček, L. Prokešová, M. Honner, V. Lang, M. Smrž, T. Mocek   +16 more
doaj   +1 more source

Reaching the first 90 in the Democratic Republic of the Congo: a programme to optimise HIV case finding through intensified index testing

The Lancet Global Health, 2020
Background: To meet the first aim of the UNAIDS 90-90-90 targets, to help end the global HIV epidemic, 90% of people living with HIV should know their status by 2020. In the Democratic Republic of the Congo (DRC), however, UNAIDS estimates that less than
Sarina Dane, MPH, Ayan Jha, MBBS, Desire Dibulundu, Yves Ilunga, Tania Tchissambou, Bibola Ngalamulume-Roberts, MPH, Kieran Hartsough, MPH, Faustin Malele Bazola, MD, Ellen Morrison, MPH, Susan Michaels-Strasser, PhD, Juliana Soares Linn, MD   +10 more
doaj   +1 more source

Fast optical‐writing recognition based on two‐dimensional photothermoelectric effect assisted with deep learning

InfoMat, 2023
The photothermoelectric (PTE) effect enables a simple structure to construct a noncontact and self‐powered writing device. PTE detectors based on active materials and one‐dimensional (1D) position‐sensitive PTE effect have attracted considerable ...
Yujia Zhong, Haoyu Fang, Yutong Ran, Hongwei Zhu   +3 more
doaj   +1 more source