Results 11 to 20 of about 445,549 (287)

Modelling Rod-like Flexible Biological Tissues for Medical Training [PDF]

open access: yes, 2009
This paper outlines a framework for the modelling of slender rod-like biological tissue structures in both global and local scales. Volumetric discretization of a rod-like structure is expensive in computation and therefore is not ideal for applications
Chang, Jian, Pan, Junjun, Zhang, Jian J.
core   +9 more sources

Rod‐rod interaction in the retina of the turtle. [PDF]

open access: yesThe Journal of Physiology, 1975
Intracellular responses were recorded from rods in isolated eye‐cups of the snapping turtle, Chelydra serpentina. Responses to small and large diameter spots of 500 nm light were studied. 1. The peak amplitudes of responses smaller than approximately 2 mV were directly proportional to irradiance.
openaire   +2 more sources

Recruitment of the Rod Pathway by Cones in the Absence of Rods [PDF]

open access: yesThe Journal of Neuroscience, 2004
In mammalian retinas, rods and cones connect to distinct sets of bipolar cells. In the retina of Nrl (neural retina leucine zipper) knock-out mice, in which rods fail to form and all photoreceptors are cones, rod bipolar cells have normal morphology, pattern of staining, and lamination, but they form synaptic connections with cones.
Strettoi E, Mears AJ, Swaroop A
openaire   +3 more sources

A study on the relationship between sociodemographic characteristics and job stress and satisfaction among healthcare workers in Turkey during the COVID-19 pandemic

open access: yesArhiv za Higijenu Rada i Toksikologiju, 2023
The aim of this study was to determine the sociodemographic characteristics that affect job stress and job satisfaction in 454 healthcare workers (physicians, nurses, midwives, technicians, and other healthcare personnel) working with COVID-19 patients ...
Tuna Hasan   +2 more
doaj   +1 more source

Limit and shakedown analysis of RC rod cross‐sections

open access: yesJournal of Civil Engineering and Management, 2009
This paper presents the calculation of the cross‐section of an RC rod element strength under the quasistatic low‐cyclic loadings, considering the non‐linear stress‐strain relations of materials without cracks.
Piotr Aliawdin, Sergei Kasabutski
doaj   +1 more source

Comparing the Rod-Like and Spherical BODIPY Nanoparticles in Cellular Imaging

open access: yesFrontiers in Chemistry, 2019
To design efficient nanoparticles for bioimaging, it is necessary to obtain nanoparticles with desired cellular uptake and biofunction. There are many studies have shown that cellular uptake largely depends on the geometric properties of nanoparticles ...
Chong Ma   +7 more
doaj   +1 more source

Noise removal at the rod synapse of mammalian retina [PDF]

open access: yes, 1998
Mammalian rods respond to single photons with a hyperpolarization of about 1 mV which is accompanied by continuous noise. Since the mammalian rod bipolar cell collects signals from 20–100 rods, the noise from the converging rods would overwhelm the ...
M.C.W. van ROSSUM   +4 more
core   +1 more source

Identification of a longitudinal notch of a rod by natural vibration frequencies

open access: yesРоссийский технологический журнал, 2023
Objectives. To study the direct and inverse problem of vibrations of a rectangular rod having a longitudinal notch, to analyze regularities of the behavior of natural frequencies and natural forms of longitudinal vibrations when changing the location and
I. M. Utyashev, A. F. Fatkhelislamov
doaj   +1 more source

The optimal synapse for sparse, binary signals in the rod pathway:Neural Computation [PDF]

open access: yes, 2006
The sparsity of photons at very low light levels necessitates a nonlinear synaptic transfer function between the rod photoreceptors and the rod-bipolar cells.
van Rossum, Mark C W   +3 more
core   +1 more source

Rod and Cone Connections With Bipolar Cells in the Rabbit Retina

open access: yesFrontiers in Cellular Neuroscience, 2021
Rod and cone pathways are segregated in the first stage of the retina: cones synapse with both ON- and OFF-cone bipolar cells while rods contact only rod bipolar cells.
Christopher M. Whitaker   +3 more
doaj   +1 more source

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