Results 51 to 60 of about 25,821 (323)
Long-Term Radial Artery Grafts with Previous Midterm Proven Patency
Brazilian Journal of Cardiovascular Surgery, 2023 Introduction: Left internal thoracic artery to left anterior descending artery (LITA-LADA) grafting has become a fundamental part of coronary artery bypass grafting (CABG).
Roberto Rocha e Silva +3 more
doaj +1 more source
Width dependent auto-oscillating properties of constriction based spin Hall nano-oscillators [PDF]
, 2020 We study the current tunable microwave signal properties of nano-constriction based spin Hall nano-oscillators (SHNOs) in oblique magnetic fields as a function of the nano-constriction width, $w=$~50--140 nm. The threshold current is found to scale linearly with $w$, defining a constant threshold current density of $J_{th}=$ 1.7 $\times$ 10$^{8}$ A/cm$^
arxiv +1 more source
Limb salvage procedure in occlusion of the infrapopliteal arteries [PDF]
Vojnosanitetski Pregled, 2007 Background/Aim. Limb salvage is a procedure for treatment of the causes of ischemia in the peripheral arteries of the lower limbs. This procedure consists of percutaneous transluminal angioplasty (PTA) of arteries of the infrapopliteal segment in the ...
Mijailović Milan, Lukić Snežana
doaj +1 more source
Arquivos de GastroenterologiaBACKGROUND: Abdominal tuberculosis is an increasing problem in developing world. OBJECTIVE: The objective of the study was to describe the clinical presentations, drug resistance pattern and treatment outcomes of abdominal tuberculosis in Western ...
Suhas UDGIRKAR +5 more
doaj +1 more source
Cisto pericárdico gigante: relato de caso Giant pericardial cyst: case report
Brazilian Journal of Cardiovascular Surgery, 2007 Os cistos pericárdicos são anomalias congênitas incomuns, sendo a maioria assintomática e diagnosticadas incidentalmente na radiografia de tórax. Os cistos gigantes são raros, havendo poucos relatos concernentes à sua história natural, apresentação ...
Vinicius José da Silva Nina +3 more
doaj +1 more source
Microscopic Theory of Josephson Mesoscopic Constrictions [PDF]
, 1993 We present a microscopic theory for the d.c. Josephson effect in model mesoscopic constrictions. Our method is based on a non-equilibrium Green function formalism which allows for a self-consistent determination of the order parameter profile along the constriction. The various regimes defined by the different length scales (Fermi wavelength $\lambda_F$
arxiv +1 more source
On transport in quantum Hall systems with constrictions [PDF]
Europhysics Letters, Vol. 80, 17003 (2007)., 2006 Motivated by recent experimental findings, we study transport in a simple phenomenological model of a quantum Hall edge system with a gate-voltage controlled constriction lowering the local filling factor. The current backscattered from the constriction is seen to arise from the matching of the properties of the edge-current excitations in the ...
arxiv +1 more source
Myocardial Protective Effect of Tezosentan, an Endothelin Receptor Antagonist, for Ischemia-Reperfusion Injury in Experimental Heart Failure Models [PDF]
, 2009 The myocardial protective effects of endothelin antagonist in ischemic cardiomyopathy (ICMP), doxorubicin-induced cardiomyopathy (DOX) and pressure-overload hypertrophy by transverse aortic constriction (TAC) models have been predicted to be different ...
Arai +38 more
core +2 more sources
Theory of AC Josepson Effect in Superconducting Constrictions [PDF]
, 1997 We have developed a microscopic theory of ac Josephson effect in short ballistic superconducting constrictions with arbitrary electron transparency and in constrictions with diffusive electron transport. The theory is valid for arbitrary miscroscopic structure of the superconducting electrodes of the constriction. As applications of the theory we study
arxiv +1 more source
A quantum point contact for neutral atoms [PDF]
Physical Review Letters 83 (19), 3762 (1999), 1999 We show that the conductance of neutral atoms through a tightly confining waveguide constriction is quantized in units of lambda_dB^2/pi, where lambda_dB is the de Broglie wavelength of the incident atoms. Such a constriction forms the atom analogue of an electron quantum point contact and is an example of quantum transport of neutral atoms in an ...
arxiv +1 more source