Results 11 to 20 of about 1,151,806 (273)

Microenvironment in neuroblastoma: Isolation and characterization of tumor-derived mesenchymal stromal cells [PDF]

open access: yes, 2018
Background: It has been proposed that mesenchymal stromal cells (MSCs) promote tumor progression by interacting with tumor cells and other stroma cells in the complex network of the tumor microenvironment. We characterized MSCs isolated and expanded from
Apuzzo T.   +14 more
core   +1 more source

Diffusion dans les systèmes Ti-Nb, Zr-Nb, v-Nb, Mo-Nb, w-Nb

open access: yesRevue de Physique Appliquée, 1970
Les auteurs ont étudié l'interdiffusion dans les systèmes binaires : Ti-Nb, Zr-Nb, V-Nb, Mo-Nb, W-Nb. La méthode expérimentale est fondée sur l'analyse à la microsonde de couples différentiels Nb-Alliage, et de couples de métaux purs. A température donnée, la méthode de Matano permet le calcul de variations des coefficients d'interdiffusion avec la ...
Roux, F., Vignes, A.
openaire   +2 more sources

Los ortogneises peralcalinos del borde meridional de la Unidad Malpica-Tuy: caracteres geológicos, mineralógicos, geoquímicos y mineralizaciones de Y-Nb-Zr-TR asociadas

open access: yesEstudios Geologicos, 1995
Se resumen en este trabajo las principales características tectónicas, mineralógicas, petrológicas y geoquímicas de tres complejos peralcalinos situados en el extremo meridional de la Unidad Malpica-Tuy, en Galicia (NO de España).
A. Martín-Izard   +6 more
doaj   +1 more source

Chemically-Mediated quantum criticality in NbFe_2 [PDF]

open access: yes, 2011
Laves-phase Nb{1+c}Fe_{2-c} is a rare itinerant intermetallic compound exhibiting magnetic quantum criticality at c_{cr}=1.5%Nb excess; its origin, and how alloying mediates it, remains an enigma.
Alam, Aftab   +2 more
core   +4 more sources

Tetraaquadodekakis-μ2-chlorido-diiodido-octahedro-hexaniobium(12 Nb—Nb) tetrahydrofuran octasolvate

open access: yesIUCrData, 2022
The title compound, [Nb6Cl12I2(H2O)4]·8THF (THF is tetrahydrofuran, C4H8O), comprises an uncharged niobium cluster unit surrounded by THF solvent molecules. The edges of the {Nb6} octahedron are μ2-coordinated by twelve chlorido ligands.
Florian Schröder, Martin Köckerling
doaj   +1 more source

Platelet-derived microparticles provoke chronic lymphocytic leukemia malignancy through metabolic reprogramming

open access: yesFrontiers in Immunology, 2023
BackgroundIt is well established that inflammation and platelets promote multiple processes of cancer malignancy. Recently, platelets have received attention for their role in carcinogenesis through the production of microvesicles or platelet-derived ...
Ehsan Gharib   +12 more
doaj   +1 more source

Peculiarities of neutron waveguides with thin Gd layer [PDF]

open access: yes, 2015
Peculiarities of the formation of a neutron enhanced standing wave in the structure with a thin highly absorbing layer of gadolinium are considered in the article. An analogue of the poisoning effect well known in reactor physics was found. The effect is
Aksenov, V.   +7 more
core   +2 more sources

NEAR-ABSOLUTE EQUATIONS OF STATE OF DIAMOND, Ag, Al, Au, Cu, Mo, Nb, Pt, Ta, AND W FOR QUASI-HYDROSTATIC CONDITIONS

open access: yesГеодинамика и тектонофизика, 2015
Using the modified formalism of [Dorogokupets, Oganov, 2005, 2007], equations of state are developed for diamond, Ag, Al, Au, Cu, Mo, Nb, Pt, Ta, and W by simultaneous optimization of shock-wave data, ultrasonic, X-ray, dilatometric and thermochemical ...
Peter I. Dorogokupets   +3 more
doaj   +1 more source

Maximum screening fields of superconducting multilayer structures [PDF]

open access: yes, 2015
It is shown that a multilayer comprised of alternating thin superconducting and insulating layers on a thick substrate can fully screen the applied magnetic field exceeding the superheating fields $H_s$ of both the superconducting layers and the ...
Abrikosov A. A.   +2 more
core   +4 more sources

A Compendium of Information on the Lysosome

open access: yesFrontiers in Cell and Developmental Biology, 2021
For a long time, lysosomes were considered as mere waste bags for cellular constituents. Thankfully, studies carried out in the past 15 years were brimming with elegant and crucial breakthroughs in lysosome research, uncovering their complex roles as ...
Nadia Bouhamdani   +6 more
doaj   +1 more source

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