Results 41 to 50 of about 186,707 (292)

Development of Simple and Affordable Integrating Device for Accurate LED Strip Light Measurement

open access: yesSensors
LED strips are increasingly used as lighting sources in public and private spaces. However, traditional photometric methods, such as integrating spheres, are unsuitable for measuring their light parameters, often resulting in significant errors and ...
Krzysztof Skarżyński   +1 more
doaj   +1 more source

Endocytic Control of Cell‐Autonomous and Non‐Cell‐Autonomous Functions of p53

open access: yesAdvanced Science, EarlyView.
NUMB Ex3‐containing isoforms localize to the plasma membrane, where they recruit p53 through SNX9 and direct it to multivesicular bodies and exosomes. Exported p53 is taken up by neighboring cells and activates nuclear programs, revealing an intercellular, exosome‐based pathway that might help establish a tumor‐suppressive microenvironment.
Roberta Cacciatore   +20 more
wiley   +1 more source

The Status of the Astrophysical Parameters of Upper Main Sequence Stars

open access: yesAstronomy
Calibrating the ages, masses, and radii of stars on the upper main sequence depends heavily on accurate measurements of the effective temperature (Teff) and surface gravity (logg).
Lukas Kueß, Ernst Paunzen
doaj   +1 more source

Current and Future Applications of Reverberation-Mapped Quasars in Cosmology

open access: yesFrontiers in Astronomy and Space Sciences, 2019
Reverberation mapping technique (RM) is an important milestone that has elevated our understanding of Active Galactic Nuclei (AGN) demographics, giving information about the kinematics and the structure of the Broad Line Region (BLR).
Swayamtrupta Panda   +3 more
doaj   +1 more source

A Tac1‐Expressing Brainstem Pathway Underlies the Pathogenesis of Trigeminal Neuralgia

open access: yesAdvanced Science, EarlyView.
A critical TG‐Sp5CTac1‐PBNTac1 pathway drives trigeminal neuropathic pain (TNP). Tac1‐expressing parabrachial nucleus (PBNTac1) neurons exhibit heightened responses to innocuous stimuli in TNP, and chemogenetic inhibition of these neurons effectively prevents TNP development.
Liting Sun   +11 more
wiley   +1 more source

Investigation of the optoelectronic properties of a novel polypyrrole-multi-well carbon nanotubes/titanium oxide/aluminum oxide/p-silicon heterojunction

open access: yesNanotechnology Reviews
The novel design of gold/polypyrrole-multi-walled carbon nanotubes/titanium dioxide/aluminum oxide/P-type silicon/aluminum (Au/PPy-MWCNTs/TiO2/Al2O3/p-Si/Al) is utilized to fabricate supercapacitors, sensors, diodes, and microelectronic devices.
Ashery Adel   +3 more
doaj   +1 more source

TSI modeling: A comparison of ground-based Ca II K-line data with space-based UV images from the SDO/AIA instrument

open access: yesJournal of Space Weather and Space Climate
The Total Solar Irradiance (TSI) is an important input for the Earth’s climate. To describe the competing contributions of sunspots and faculae on irradiance variability, the San Fernando Observatory (SFO) irradiance model has two components: One ...
Chapman Gary A.   +2 more
doaj   +1 more source

The level of photometry is the basic level of the Hungarian galaxy [PDF]

open access: yesمجلة التربية والعلم, 2007
The photometric and fundamental plane for a sample of early type galaxies(elliptical and lenticular galaxies) which belongs to Virgo cluster have been calculated by fitting the Sersic model ( r1/n-model) to the surface brightness profiles along the major
Mohsen Ali, Saad Younis
doaj   +1 more source

Precision of a Low-Cost InGaAs Detector for Near Infrared Photometry

open access: yes, 2013
We have designed, constructed, and tested an InGaAs near-infrared camera to explore whether low-cost detectors can make small (
Croll, Bryce   +2 more
core   +1 more source

Northern JHK Standard Stars for Array Detectors [PDF]

open access: yes, 1998
We report J, H and K photometry of 86 stars in 40 fields in the northern hemisphere. The fields are smaller than or comparable to a 4x4 arcmin field-of-view, and are roughly uniformly distributed over the sky, making them suitable for a homogeneous ...
Allen D. A.   +18 more
core   +3 more sources

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