Results 11 to 20 of about 390,983 (210)

The Roles of Rods, Cones, and Melanopsin in Photoresponses of M4 Intrinsically Photosensitive Retinal Ganglion Cells (ipRGCs) and Optokinetic Visual Behavior

open access: yesFrontiers in Cellular Neuroscience, 2018
Intrinsically photosensitive retinal ganglion cells (ipRGCs) mediate not only image-forming vision like other ganglion cells, but also non-image-forming physiological responses to light such as pupil constriction and circadian photoentrainment.
Melanie M. Schroeder   +12 more
doaj   +1 more source

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

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

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

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

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

STRUCTURAL AND DESIGN SPECIFICS OF SPACE GRID SYSTEMS

open access: yesНаука и техника, 2017
The aim of the study is to identify main trends in the development of space grid structures. In order to reach the purpose it is necessary to conduct a review of the known structural concepts, nodal connections and specifics of the space grid structures ...
G. M. Gasii
doaj   +1 more source

EVALUASI PERLAKUAN EQUAL-CHANNEL ANGULAR PRESSING (ECAP) DENGAN RUTE Bc PADA BATANG TITANIUM (Ti-ROD) DENGAN ANALISIS DIFRAKSI SINAR-X

open access: yesRekayasa Mesin, 2022
In this study, commercial titanium rod was treated by equal-channel angular pressing (ECAP) with Bc route and two passes. This treatment was then evaluated by means of x-ray diffraction (XRD) analytical method.
Ibrahim Purawiardi   +1 more
doaj   +1 more source

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