Results 31 to 40 of about 971,458 (301)

On the stability of classical orbits of the hydrogen ground state in Stochastic Electrodynamics [PDF]

open access: yes, 2016
de la Pe\~na 1980 and Puthoff 1987 show that circular orbits in the hydrogen problem of Stochastic Electrodynamics are stable. Though the Cole-Zou 2003 simulations support the stability, our recent numerics always lead to self-ionisation.
Nieuwenhuizen, Theo M.
core   +4 more sources

Phenotypic Diversity and Genetic Variation within a Collection of Onion (Allium cepa L.) Germplasm from Peninsular India [PDF]

open access: yesElectronic Journal of Plant Breeding, 2014
Twenty three diverse germplasm lines collected from varying agro-ecological regions of Peninsular India during 2007-08 were characterized and evaluated along with three controls viz.
Neelam Sunil, Vinod Kumar, Medagam Thirupathi Reddy, Venkateshwaran Kamala
doaj  

A characteristic lengthscale causes anomalous size effects and boundary programmability in mechanical metamaterials [PDF]

open access: yes, 2017
The architecture of mechanical metamaterialsis designed to harness geometry, non-linearity and topology to obtain advanced functionalities such as shape morphing, programmability and one-way propagation.
A S Meeussen   +31 more
core   +3 more sources

Morphological and anatomical characteristics of Ludwigia species (Onagraceae) in Can Tho city

open access: yesCTU Journal of Innovation and Sustainable Development
This study was conducted to provide information on the morphological characteristics and anatomical structures of species belonging to the genus Ludwigia, serving as a scientific basis for the taxonomical classification of this genus for more effective ...
Huynh Nhat Anh Bui   +6 more
doaj   +3 more sources

Analysis of deflection and dynamic plant characteristics of Cyperus malaccensis Lam

open access: yesPlant Production Science, 2019
In this study, flexural rigidity, natural frequency, and damping coefficient of Cyperus malaccensis Lam. with long stems were measured for application for fluid–structure interaction simulation in a field.
Mana Shioya   +7 more
doaj   +1 more source

MICROMORPHOLOGICAL AND ANATOMICAL CHARACTERS OF THE TURKISH ENDEMIC Marrubium trachyticum Boiss. (LAMIACEAE)

open access: yesTrakya University Journal of Natural Sciences, 2018
In the present study, micromorphological characters of stem, leaf, calyx and mericarp of the Turkish endemic Marrubium trachyticum Boiss were investigated using scanning electron microscopy (SEM) and the anatomy of root, stem and leaf using light ...
Tülay Aytaş Akçin, Burcu Camili
doaj   +1 more source

Sas-Ptp10D shapes germ-line stem cell niche by facilitating JNK-mediated apoptosis.

open access: yesPLoS Genetics, 2023
The function of the stem cell system is supported by a stereotypical shape of the niche structure. In Drosophila ovarian germarium, somatic cap cells form a dish-like niche structure that allows only two or three germ-line stem cells (GSCs) reside in the
Kiichiro Taniguchi, Tatsushi Igaki
doaj   +1 more source

Modeling mammalian gastrulation with embryonic stem cells

open access: yes, 2017
Understanding cell fate patterning and morphogenesis in the mammalian embryo remains a formidable challenge. Recently, in vivo models based on embryonic stem cells (ESCs) have emerged as complementary methods to quantitatively dissect the physical and ...
Amita   +65 more
core   +1 more source

Cellular aspect ratio and cell division mechanics underlie the patterning of cell progeny in diverse mammalian epithelia. [PDF]

open access: yes, 2018
Cell division is essential to expand, shape, and replenish epithelia. In the adult small intestine, cells from a common progenitor intermix with other lineages, whereas cell progeny in many other epithelia form contiguous patches.
Castillo-Azofeifa, David   +7 more
core   +1 more source

Engineering the geometrical shape of mesenchymal stromal cells through defined cyclic stretch regimens

open access: yesScientific Reports, 2017
Stem cells have been predicted to improve disease outcomes and patient lives. Steering stem cell fate - through controlling cell shape - may substantially accelerate progress towards this goal. As mesenchymal stromal cells (MSCs) are continuously exposed
Brandan Walters   +6 more
doaj   +1 more source

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