نتایج جستجو برای: nodal segments

تعداد نتایج: 83537  

The cracking elements method (CEM) is a novel numerical approach for simulating fracture of quasi-brittle materials. This method is built in the framework of conventional finite element method (FEM) based on standard Galerkin approximation, which models the cracks with disconnected cracking segments. The orientation of propagating cracks is determined by local criteria and no explicit or implic...

Journal: :Pakistan journal of scientific and industrial research 2021

Ocimum sanctum commonly called (holy basil) an herb containing medicinal, ornamental values, is often used in culinary applications. This research focuses on the improved and efficient protocol for direct regeneration acclimatisation of using nodal segments. Organogenesis multiplication from explants were observed to a maximum Murashige Skoog (MS) medium supplemented with 0.1 mg/L 6-Benzyl amin...

Journal: :Circulation research 1974
R H Anderson M J Janse F J van Capelle J Billette A E Becker D Durrer

Thirteen rabbit atrioventricular nodes were studied both morphologically and electrophysiologically. Two of these nodes were subsequently reconstructed in three-dimensional fashion. From the morphological standpoint, it was shown that the atrioventricular node was divided into a smaller enclosed portion and a larger open portion by a fibrous collar derived from the central fibrous body. Three d...

Journal: :Royal Society open science 2016
V Jaksic D P Mandic K Ryan B Basu V Pakrashi

Although vibration monitoring is a popular method to monitor and assess dynamic structures, quantification of linearity or nonlinearity of the dynamic responses remains a challenging problem. We investigate the delay vector variance (DVV) method in this regard in a comprehensive manner to establish the degree to which a change in signal nonlinearity can be related to system nonlinearity and how...

Journal: :Journal of bio-science 2023

An efficient protocol for in vitro clonal propagation of Smilax zeylanica was developed using nodal and shoot tip segments from field grown plants. Nodal explants performed better than when two distinct were tested proliferation. The best results proliferation achieved with MS medium supplemented BAP Kn alone or combination NAA IBA at various concentrations. On containing 4.0 ?M BAP, the greate...

Journal: :Methods in molecular biology 2009
Shashi B Babbar Neetika Walia Amandeep Kaur

Conservation and propagation of species using biotechnologic tools-such as plant tissue culture-are relevant when natural propagation is hampered for various reasons. In vitro techniques allow mass multiplication and propagation under pathogen-free conditions but also override dependence on season for availability of plant material. Moreover, in vitro genetic manipulation of a species, invariab...

Journal: :Circulation 1984
R M Berne J P DiMarco L Belardinelli

THE ELECTROPHYSIOLOGIC EFFECTS of adenosine and other adenine derivatives were first described by Drury and Szent-Gyorgyi in 1929.' These investigators clearly demonstrated that intravenous administration of adenosine produced a decrease in sinus rate and transient atrioventricular (AV) block. Adenosine is a mediator of many physiologic phenomena and most of the interest in its effects on the c...

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