Results 31 to 40 of about 5,597,978 (191)

Euler-Savary's Formula for the Planar Curves in Two Dimensional Lightlike Cone [PDF]

, 2010
In this paper, we study the Euler-Savary's formula for the planar curves in the lightlike cone. We first define the associated curve of a curve in the two dimensional lightlike cone Q2:Then we give the relation between the curvatures of a base curve, a ...
ERGÄUT, Mahmut, BALGETIR ÄOZTEKIN, Handan   +1 more
core   +1 more source

Comparison of single and multi-coolant axial jets on the temperature reduction of nose cone with multiple-row disk

Results in Engineering, 2023
Ensuring the thermal safety of the nose cone on high-velocity shuttles is crucial for maintaining the overall safety of hypervelocity vehicles. This study investigated the use of axial single and multiple jets to reduce the thermal loading on the main ...
Seyyed Amirreza Abdollahi, Iman Shiryanpoor, Ali Hosin Alibak, Seyyed Faramarz Ranjbar   +3 more
doaj   +1 more source

Bat eyes have ultraviolet-sensitive cone photoreceptors [PDF]

, 2009
Mammalian retinae have rod photoreceptors for night vision and cone photoreceptors for daylight and colour vision. For colour discrimination, most mammals possess two cone populations with two visual pigments (opsins) that have absorption maxima at short
Josef Ammermüller, Leo Peichl, Ammermüller Josef, Knop Gabriel C., Peichl, Leo, Glösmann, Martin, Brigitte Müller, Müller Brigitte, Hagemann Cornelia, Knop, Gabriel C., Glösmann, M., Hagemann, Cornelia, Knop, G., Ammermüller, J., Glösmann Martin, Müller, B., Hagemann, C., Martin Glösmann, Ammermüller, Josef, Müller, Brigitte, Peichl Leo, Gabriel C Knop, Cornelia Hagemann, Peichl, L.   +23 more
core   +2 more sources

A Study on the Reduction of Drag and Heat Transfer on a Conventional Hypersonic Nose Cone [PDF]

Journal of Heat and Mass Transfer Research
In the present study, the effect of jet injection on two geometries—single-cone and double-cone—subjected to hypersonic flow is investigated. The simulations are performed using ANSYS-Fluent software.
Mohammad Hadi Islamy, Mohsen Sargolzayi, Esmaeil Yaddollahi Afra   +2 more
doaj   +1 more source

Patterning the cone mosaic array in zebrafish retina requires specification of ultraviolet-sensitive cones. [PDF]

PLoS ONE, 2014
Cone photoreceptors in teleost fish are organized in precise, crystalline arrays in the epithelial plane of the retina. In zebrafish, four distinct morphological/spectral cone types occupy specific, invariant positions within a regular lattice.
Pamela A Raymond, Steven M Colvin, Zahera Jabeen, Mikiko Nagashima, Linda K Barthel, Jeremy Hadidjojo, Lilia Popova, Vivek R Pejaver, David K Lubensky   +8 more
doaj   +1 more source

The Reflectance of Single Cones in the Living Human Eye

Investigative Opthalmology & Visual Science, 2003
Individual cones were imaged in the living human eye with the Rochester adaptive optics ophthalmoscope. In all eyes, there were large differences in the reflectance of different cones, even when all the photopigment was bleached. To help understand what produces this spatial variation, the investigators explored whether it is a static or a dynamic ...
Aristofanis, Pallikaris, David R, Williams, Heidi, Hofer   +2 more
openaire   +2 more sources

Electron microscopy study of the central retinal fovea in Pied flycatcher: evidence of a mechanism of light energy transmission through the retina

Heliyon, 2020
We present unique ultrastructural data on avian retinal cells. Presently and earlier (Zueva et al., 2016) we explored distribution of intermediate filaments (IFs) in retinal cells of the Pied flycatcher (Ficedula hypoleuca, Passeriformes, Aves) in the ...
Lidia Zueva, Tatiana Golubeva, Elena Korneeva, Oscar Resto, Mikhail Inyushin, Igor Khmelinskii, Vladimir Makarov   +6 more
doaj   +1 more source

Theoretical and experimental studies of a novel cone-jet sensor [PDF]

, 2001
Modeling of a novel cone-jet sensor using two-dimensional (2-D) finite element analysis was investigated for dimensional measurement. Theoretical and experimental studies demonstrated that a cone-jet sensor supplied with air can be used to accurately ...
Jones, BE, Butler, C, Xie, T, Yang, QP, B.E. Jones, C. Butler, null Qingping Yang, null Tuqiang Xie   +7 more
core   +2 more sources

Single-cone imaging in inherited and acquired colour vision deficiencies [PDF]

, 2019
Colour vision deficiencies are common in humans and occur both as a consequence of inherited cone opsin mutations, altering the number or function of the different cone types expressed in the retina, and acquired through secondary disruption of cone ...
Hagen, Lene Aarvelta, Pedersen, Hilde Røgeberg, Baraas, Rigmor C.   +2 more
core   +2 more sources

ABSORPTION SPECTRUM OF A SINGLE CONE IN CARP RETINA

The Japanese Journal of Physiology, 1957
1. Spectral absorption is measured in a single cone from the carp retina, by a specially designed microspectrophotometer.2. Five photopigments having λmax 490-500mμ, 520-540mμ, 560-580mμ, 620-640mμ and670-680mμ are detected in various cone outer segments. The occurrence frequency is high for the first three.3.
HANAOKA, TOSHIMASA, FUJIMOTO, KATSUMI
openaire   +3 more sources