Results 41 to 50 of about 2,702,849 (300)

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

open access: yesMolecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau   +36 more
wiley   +1 more source

Resonant oscillation of vertical working part of conveyer-loader

open access: yesҚарағанды университетінің хабаршысы. Физика сериясы, 2019
The experimental equipment for testing the screw loader of bulk materials with horizontal and vertical branches was designed and manufactured, which allows to determine the process productivity and power consumption according to the developed methods ...
I. Hevko   +5 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Study of a Welding Pool Harmonic Oscillations Influence on the Welded Metal Hardness and Weld Bead Width

open access: yesЖурнал інженерних наук, 2019
The comparison results of the hardness measuring of welded metal and the heat-affected zone of the eight welded beads from low-carbon steel obtained by surfacing CO2/MAG with welding bath oscillation influence at values of amplitude equaled 0.5 mm ...
Lebedev V. A.   +2 more
doaj   +1 more source

Semiclassical approach to fidelity amplitude [PDF]

open access: yes, 2011
The fidelity amplitude is a quantity of paramount importance in echo type experiments. We use semiclassical theory to study the average fidelity amplitude for quantum chaotic systems under external perturbation. We explain analytically two extreme cases:
Arnold V I   +17 more
core   +2 more sources

Celestial twistor amplitudes

open access: yesPhysical Review D, 2023
56 pages plus appendices, v2:minor typos fixed, v3:minor correction, v4:edited for ...
Graham R. Brown   +2 more
openaire   +2 more sources

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Dual picosecond fast tunable optical parametric amplifier laser system for wide-field nonlinear optical microscopy

open access: yesAPL Photonics
In the last decades, nonlinear optical microscopy techniques, such as two-Photon Excited Fluorescence (2PEF), Sum Frequency Generation (SFG), and Hyperspectral Coherent Anti-Stokes Raman Scattering (H-CARS) microscopy, emerged as powerful tools to image ...
Federico Vernuccio   +10 more
doaj   +1 more source

Development of difference spectrophotometric method for the estimation of leflunomide in tablet dosage form [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2012
A new simple, accurate, precise, highly sensitive and reproducible difference spectrophotometric method for the determination of leflunomide in bulk and pharmaceutical dosage form is described. Difference spectroscopic method is based on the principle
Lakshmana Prabu S.   +2 more
doaj   +1 more source

Physical Simulation of Ultrasonic Imaging Logging Response

open access: yesSensors, 2022
Ultrasonic imaging logging can visually identify the location, shape, dip angle and orientation of fractures and holes. The method has not been effectively applied in the field; one of the prime reasons is that the results of physical simulation ...
Junqiang Lu   +6 more
doaj   +1 more source

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