Results 111 to 120 of about 578,588 (318)

Optical Methods In Engineering Measurements [PDF]

SPIE Proceedings, 1986
The optical precision measurement methods described in this paper have resolutions in the range from A to a few microns. To extend the range structured light techniques or optical triangulation,can be used in metrology. The application of interferometry and holography will be extended because of the progress made in the fringe analysis.
openaire   +2 more sources

The role of miR‐335‐5p in the redifferentiation of BRAF p.V600E thyroid cancers

Molecular Oncology, EarlyView.
The BRAF p.V600E mutation promotes thyroid cancer dedifferentiation and radioiodine resistance. Using a network approach, we identified miR‐335‐5p as a key regulator of BRAF‐mutated thyroid tumors. Restoring miR‐335‐5p increased thyroid‐specific gene expression and iodine uptake in cells and organoids.
Valeria Pecce, Simone Bini, Marialuisa Sponziello, Giorgio Grani, Giulia Fiscon, Paola Paci, Lorenzo Farina, Rosa Falcone, Valentina Maggisano, Sebastiano Filetti, Cosimo Durante, Antonella Verrienti   +11 more
wiley   +1 more source

Airborne Shape Measurement of Parabolic Trough Collector Fields [PDF]

, 2011
As the optical efficiency of the solar field has a high impact on the overall plant performance, qualification methods determining the geometrical accuracy of solar concentrator systems have gained high importance.
Hilgert, Christoph, Stanicki , Badrudin, Ulmer , Steffen, Prahl, Christoph, Röger, Marc   +4 more
core  

Phantoms for performance assessment of optical coherence tomography systems [PDF]

, 2012
In this paper, we describe the procedures to make epoxy resin and agarose phantoms designed using Mie scattering calculations. The phantoms are constructed to be used in the estimation of point spread function (PSF) of an optical coherence tomography ...
S. A. Hojjatoleslami, Corr, S.A., Podoleanu, A.G., Price, M.C., Podoleanu, Adrian Gh., Avanaki, M.R.N., Avanaki, Mohammad R.N., Mazrae Khoshki, R., Mark C. Price, Rohollah Mazraeh Khoshki, Price, Mark C., Adrian G. Podoleanu, Mohammad R. N. Avanaki, Corr, Serena A., Khoshki, Rohollah Mazraeh, Serena A. Corr, Hojjatoleslami, S.A.   +16 more
core   +1 more source

Dimethyl fumarate combined with cisplatin at subcytotoxic doses sensitizes cervical cancer toward ferroptosis and apoptosis through GSH restriction and p53 (re)activation

Molecular Oncology, EarlyView.
Dimethyl fumarate (DMF) reduces growth of HPV‐positive cervical cancer spheroids and induces ferroptosis in cervical cancer cells via blocking SLC7A11/Glutathione (GSH) axis. Combination of subcytotoxic doses of DMF and cisplatin (CDDP) further suppresses spheroid growth and drives cell death in 2D culture models.
Carolina Punziano, Giuseppina Minopoli, Simona Romano, Laura Marrone, Katia Aquilano, Maria Lina Tornesello, Raffaella Faraonio   +6 more
wiley   +1 more source

Research on key technology of the optical measurement device used in liquid oxygen tank of carrier rocket [PDF]

, 2019
For some extreme environment, such as vibration and shock during rocket launching or ultralow temperature in tank of cryogenic propellant, some key technology of the optical measurement device used in liquid oxygen tank of carrier rocket have been ...
Zihao Qiang, Wu, Li, Gao, Bo, Yahui Li, Bo Gao, Mei, Chao, Qiang, Zihao, Chao Mei, Li, Yahui, Li Wu   +9 more
core   +1 more source

Grayscale Iterative Star Spot Extraction Algorithm Based on Image Entropy

Applied Sciences
Star trackers are susceptible to interference from stray light, such as sunlight, moonlight, and Earth atmosphere light, in the space environment, resulting in an overall improvement in the star image grayscale, poor background uniformity, low star ...
Qing Zhao, Jiawen Liao, Derui Zhang, Jia Feng   +3 more
doaj   +1 more source

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

Molecular 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, Ayesha Alvero, Yi Qin, Mingjin Wang, Alexandra Fox, Yanfeng Li, Michael Millman, Amy Kemper, Gil Mor, Xian Shuang Liu, Michael Chopp, Zheng Gang Zhang, Yi Zhang   +12 more
wiley   +1 more source

Optical Radiation Measurements and Instrumentation

Journal of Investigative Dermatology, 1981
Accurate measurement of optical radiation is required when sources of optical radiation are used in biological research. Such measurement of broad-band noncoherent optical radiations usually must be performed by a highly trained specialist using sophisticated, complex, and expensive instruments.
Andersen, F. Alan, Landry, Robert J.
openaire   +2 more sources

Somatic mutational landscape in von Hippel–Lindau familial hemangioblastoma

Molecular 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, Anne Nørremølle, Lilian Bomme Ousager, Lars van Brakel Andersen, Marie Louise Mølgaard Binderup, Mads Thomassen   +5 more
wiley   +1 more source