Results 71 to 80 of about 6,368 (219)

New Adhesive Composite Barrier in Pediatric Cardiac Surgery: A Pilot Clinical Study

open access: yesJournal of Cardiac Surgery, Volume 2025, Issue 1, 2025.
Objectives This study aims to assess the effectiveness of a new adhesive composite barrier for preventing scars between the sternum and the intracardiac structures. Methods A pilot, prospective, single‐center, randomized controlled study encompassing neonates with ventricular septal defect who received staged correction between January and September ...
Oleg A. Egunov   +5 more
wiley   +1 more source

Considerazioni sullo spazio di Lobachevsky-Einstein

open access: yes, 1984
We show as a metric tensor in the Lobachevsky-Einstein space follows by particularizing that one characteristic of the three dimensional spaces having constant curvature.
Crupi, Giovanni
core  

NIKOLAI IVANOVICH LOBACHEVSKY - THE OUTSTANDING PEOPLE OF NATIONAL EDUCATION [PDF]

open access: yes, 2017
Статья посвящена педагогической деятельности Н.И. Лобачевского. Рассматривается его вклад в развитие народного образования, разработка основ методико-педагогической теории.The article is devoted to N.I. Lobachevsky. His contribution to the development of
Еникеева С.Р.   +2 more
core  

Biochemical blood counts in the application of fish oil preparations in conditions of intense physical activity

open access: yesУчёные записки Санкт-Петербургского государственного медицинского университета им. Акад. И.П. Павлова
The objective was to evaluate the effect of fish oil and ozonated fish oil in the dynamics of biochemical parameters of blood plasma while modeling physical activity up to “to failure” in rats.Methods and materials. The animals were divided into 4 groups
E. A. Knyazeva   +3 more
doaj   +1 more source

Enhanced Organ Protection During Cardiopulmonary Bypass in Cardiac Surgery: Synergistic Effects of Nitric Oxide and Hydrogen Therapy

open access: yesJournal of Cardiac Surgery, Volume 2025, Issue 1, 2025.
Background/Aim The present study investigates the effects of isolated administration of nitric oxide (NO) and molecular hydrogen (H2), as well as their combined delivery into the gas supply line of the cardiopulmonary bypass (CPB) circuit. The primary objective is to evaluate their impact on antioxidant activity, biomarkers of myocardial injury, and ...
Vladimir Pichugin   +9 more
wiley   +1 more source

Stark Effect in the Lobachevsky Space

open access: yes, 2012
A possibility to define an analog of a uniform electric field in the Lobachevsky space is considered. Schrödinger equation for the hydrogen atom in this electric field is separated and Stark shifts of energy levels are ...
Otchik, V., Kurochkin, Yu.
core  

STEERABLE TOROIDAL BIFOCAL LENS-ARRAY ANTENNA IN 57–64 GHZ RANGE

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2019
Introduction. Currently, one of the most promising approaches to the development of 5th generation mobile wireless systems is the deployment of heterogeneous networks based on existing LTE cellular systems having both large and small cells.
Alexander A. Maltsev   +3 more
doaj   +1 more source

NIKOLAI IVANOVICH LOBACHEVSKY - THE OUTSTANDING PEOPLE OF NATIONAL EDUCATION

open access: yes, 2020
97-99Статья посвящена педагогической деятельности Н.И. Лобачевского. Рассматривается его вклад в развитие народного образования, разработка основ методико-педагогической теории.The article is devoted to N.I. Lobachevsky.
Садреева Г.Р.   +2 more
core  

ADAKAH SEGITIGA YANG JUMLAH SUDUTNYA KURANG DARI 1800? (Sebuah kajian dari Geometri Non Euclid) [PDF]

open access: yes, 2016
Geometri yang diajarkan di sekolah/madrasah, bahkan di perguruan tinggi umumnya merupakan geometri yang dikenal dengan nama Geometri Euclidus. Ciri khas geometri ini, ditandai dengan rumus yang amat terkenal yaitu bahwa: Jumlah sudut dalam setiap segitga
Mujiasih M, m, mujiasih
core   +1 more source

Dirac Particle in the Coulomb Field on the Background of Hyperbolic Lobachevsky Model

open access: yes, 2021
The known systems of radial equations describing the relativistic hydrogen atom on the base of the Dirac equation in Lobachevsky hyperbolic space is solved. The relevant 2-nd order differential equation has six regular singular points, its solutions of
Koral’kov, A. D.   +3 more
core   +1 more source

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