Results 111 to 120 of about 28,505,010 (346)

Special light trajectories in optical medium [PDF]

open access: yes, 2010
The Fermat principle is used to define trajectories in nonhomogenous optical media. The Poincare model of the Lobachevskii geometry is derived. The index of refraction is determined for the light confined in the circular trajectory in the optical medium ...
Pardy, Miroslav
core  

RIPK4 function interferes with melanoma cell adhesion and metastasis

open access: yesMolecular Oncology, EarlyView.
RIPK4 promotes melanoma growth and spread. RIPK4 levels increase as skin lesions progress to melanoma. CRISPR/Cas9‐mediated deletion of RIPK4 causes melanoma cells to form less compact spheroids, reduces their migratory and invasive abilities and limits tumour growth and dissemination in mouse models.
Norbert Wronski   +9 more
wiley   +1 more source

Towards model-based adaptive optics optical coherence tomography

open access: yesOptics Express, 2014
The transfer function for optical wavefront aberrations in single-mode fiber based optical coherence tomography is determined. The loss in measured OCT signal due to optical wavefront aberrations is quantified using Fresnel propagation and the calculation of overlap integrals.
Hans R G W, Verstraete   +4 more
openaire   +2 more sources

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang   +12 more
wiley   +1 more source

Interrogating the immune landscape of microsatellite stable RAS‐mutated colon cancer

open access: yesMolecular Oncology, EarlyView.
COLOSSUS project RAS‐mutated MSS colon cancer study explored transcriptomics and immune cell density by immunohistochemistry (IHC), Immunoscore (IS), ISIC/TuLIS scores, mutation counts, and detected different prevalences but similar microenvironment composition across immune markers with clinical relevance for future immunotherapy combination ...
Rodrigo Dienstmann   +61 more
wiley   +1 more source

OPTICAL DRIVE MODELING

open access: yesInternational Journal of Advanced Studies in Computer Engineering
The article describes the main components of the developed three-dimensional model of the optical drive Sony NEC Optiarc AD-7173A in the program Kompas-3D v20: lower and upper covers, tray, microcircuits, case.
D. A. Kostylev, T. V. Richter
openaire   +1 more source

Somatic mutational landscape in von Hippel–Lindau familial hemangioblastoma

open access: yesMolecular Oncology, EarlyView.
The causes of central nervous system (CNS) hemangioblastoma in Von Hippel–Lindau (vHL) disease are unclear. We used Whole Exome Sequencing (WES) on familial hemangioblastoma to investigate events that underlie tumor development. Our findings suggest that VHL loss creates a permissive environment for tumor formation, while additional alterations ...
Maja Dembic   +5 more
wiley   +1 more source

Design and Analysis of 5G Optical Communication System for Various Filtering Operations using Wireless Optical Transmission

open access: yesResults in Physics, 2019
In this paper, the Optical Wireless Communication (OWC) channels for different optical filters are analysed and compared with their previous model. Performance analysis is done using different optical filters namely Bessel, Trapezoidal, Gaussian and ...
K.H. Shakthi Murugan, M. Sumathi
doaj   +1 more source

Nonequivalence of ensembles for long-range quantum spin systems in optical lattices

open access: yes, 2010
Motivated by the anisotropic long-range nature of the interactions between cold dipolar atoms or molecules in an optical lattice, we study the anisotropic quantum Heisenberg model with Curie-Weiss-type long-range interactions.
Kastner, Michael
core   +1 more source

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