نتایج جستجو برای: cone models

تعداد نتایج: 946938  

Journal: :Geological Magazine 1907

2013
C. Gejji R. Anderson W. and Sankaran Yoon Shawn Phillips

The current study focuses on comprehensive fuel spray modeling and its effects on chamber acoustics in combustion dynamics simulations. The fuel spray is modeled using an Eulerian-Lagrangian approach describing the atomizer internal flow, primary atomization, and secondary atomization processes. To anchor the fuel spray model, a series of experiments has been conducted on the fuel atomizer with...

Journal: :The Journal of clinical investigation 2015
Leah C Byrne Deniz Dalkara Gabriel Luna Steven K Fisher Emmanuelle Clérin Jose-Alain Sahel Thierry Léveillard John G Flannery

Alternative splicing of nucleoredoxin-like 1 (Nxnl1) results in 2 isoforms of the rod-derived cone viability factor. The truncated form (RdCVF) is a thioredoxin-like protein secreted by rods that promotes cone survival, while the full-length isoform (RdCVFL), which contains a thioredoxin fold, is involved in oxidative signaling and protection against hyperoxia. Here, we evaluated the effects of...

2010
M. GAMERO-CASTAÑO

The characterization of electrosprayed droplets by means of retarding potential and time-of-flight techniques yields relevant information on the physics of the cone–jet itself. The experimental data reveal that a significant fraction of the electric power injected in the cone–jet is degraded by ohmic and viscous dissipations, as well as converted into surface energy. The degradation of energy c...

2012
Jing An Qun Guo Li Li Zuoming Zhang

Purpose. To describe the characteristics of rod and cone functions in rat models for congenital stationary night blindness (CSNB) and retinal cone dysfunction (RCD). Methods. Rod and cone function were isolated by recording the rod-/cone-driven flicker and blue light flicker electroretinograms (ERGs). Results. During dark adaptation, the amplitudes of flicker ERGs in CSNB rats were lower than t...

Journal: :Progress in retinal and eye research 2009
Debarshi Mustafi Andreas H Engel Krzysztof Palczewski

Although outnumbered more than 20:1 by rod photoreceptors, cone cells in the human retina mediate daylight vision and are critical for visual acuity and color discrimination. A variety of human diseases are characterized by a progressive loss of cone photoreceptors but the low abundance of cones and the absence of a macula in non-primate mammalian retinas have made it difficult to investigate c...

2008
David H. Foster Kamila Zychaluk

The effect on cone excitations of a change in illuminant on a scene may be predicted by von Kries scaling, but these predictions are not perfectly accurate. Here, a non-parametric method was used instead, but which preserved the principle of independence of activity in cone or cone-opponent mechanisms. Performance was evaluated over samples taken from 50 hyperspectral images of vegetated and no...

2018
Paul V. Waldron Fabiana Di Marco Kamil Kruczek Joana Ribeiro Anna B. Graca Claire Hippert Nozie D. Aghaizu Aikaterini A. Kalargyrou Amanda C. Barber Giulia Grimaldi Yanai Duran Samuel J.I. Blackford Magdalena Kloc Debbie Goh Eduardo Zabala Aldunate Robert D. Sampson James W.B. Bainbridge Alexander J. Smith Anai Gonzalez-Cordero Jane C. Sowden Robin R. Ali Rachael A. Pearson

Human vision relies heavily upon cone photoreceptors, and their loss results in permanent visual impairment. Transplantation of healthy photoreceptors can restore visual function in models of inherited blindness, a process previously understood to arise by donor cell integration within the host retina. However, we and others recently demonstrated that donor rod photoreceptors engage in material...

1998
Athinodoros S. Georghiades David J. Kriegman Peter N. Belhumeur

Due to illumination variability, the same object can appear dramatically di erent even when viewed in xed pose. To handle this variability, an object recognition system must employ a representation that is either invariant to, or models this variability. This paper presents an appearance-based method for modeling the variability due to illumination in the images of objects. The method di ers fr...

2010
ALEXANDRU OGODESCU COSMIN SINESCU EMILIA OGODESCU MEDA NEGRUTIU ELISABETA BRATU

Modern treatment of adult patients with complex dental problems often requires an interdisciplinary collaboration between different specialties of dental medicine among them frequently orthodontics: interdisciplinary orthodontics. Good diagnostic tools and easy communication are essential in such complicated cases. Computer technology has an increasing impact in the practice of orthodontics; ev...

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