Results 21 to 30 of about 43,710 (347)

Mapping of the energetically lowest exciton in bulk $1T$-HfS$_2$ [PDF]

open access: yes, 2018
By combining electron energy-loss spectroscopy and state-of-the-art computational methods, we were able to provide an extensive picture of the excitonic processes in $1T$-HfS$_2$.
Büchner, Bernd   +4 more
core   +2 more sources

Comparative study of defect energetics in HfO2 and SiO2

open access: yes, 2003
We perform ab initio calculations, based on density functional theory, of substitutional and vacancy defects in the monoclinic hafnium oxide (m-HfO2) and alpha-quartz (SiO2).
da Silva, Antonio J. R.   +3 more
core   +1 more source

Physical origin of hafnium-based ferroelectricity

open access: yesComputational Materials Today
This review presents an overview of the developmental history of hafnium-based ferroelectric materials and their various potential applications. It delves into the origins of hafnium-based ferroelectric phases and summarizes recent research advancements ...
Shuning Lv   +7 more
doaj   +1 more source

The ternary system Hf–Re–Al at 1000 °C

open access: yesФізика і хімія твердого тіла, 2023
The interaction of the components in the Hf–Re–Al system was investigated by X-ray powder diffraction and scanning electron microscopy with energy-dispersive X-ray spectroscopy.
Liana Zinko   +3 more
doaj   +1 more source

Hafnium germanium telluride [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2008
The title hafnium germanium telluride, HfGeTe(4), has been synthesized by the use of a halide flux and structurally characterized by X-ray diffraction. HfGeTe(4) is isostructural with stoichiometric ZrGeTe(4) and the Hf site in this compound is also fully occupied.
Hoseop Yun, Gyung-Joo Jang
openaire   +3 more sources

Morphology of titanium, zirconium and hafnium nanofilms deposited onto zirconia ceramic at annealing in vacuum

open access: yesФізика і хімія твердого тіла
The morphology of titanium, zirconium, and hafnium nanofilms deposited onto zirconia after annealing in vacuum at 1400, 1500, and 1600°C was studied. Nanofilms show a tendency to fragmentation; for titanium it begins at 1400°C, for zirconium and hafnium ...
O.V. Durov, T.V. Stetsyuk
doaj   +1 more source

Explorative study on the antibacterial effects of 3D-printed PMMA/nitrides composites

open access: yesMaterials & Design, 2021
Following the rising interested on 3D-printing technologies, this research explores the possibility to apply nitride-polymethylmethacrylate composite coatings on 3D printed parts in order to increase their resistance to bacteria colonization.
Elia Marin   +5 more
doaj   +1 more source

Identification of serum protein biomarkers for pre‐cancerous lesions associated with pancreatic ductal adenocarcinoma

open access: yesMolecular Oncology, EarlyView.
This work identified serum proteins associated with pancreatic epithelial neoplasms (PanINs) and early‐stage PDAC. Proteomics screens assessed genetically engineered mice with abundant PanINs, KPC mice (Lox‐STOP‐Lox‐KrasG12D/+ Lox‐STOP‐Lox‐Trp53R172H/+ Pdx1‐Cre) before PDAC development and also early‐stage PDAC patients (n = 31), compared to benign ...
Hannah Mearns   +10 more
wiley   +1 more source

Activation cross sections of $\alpha$-particle induced nuclear reactions on hafnium and deuteron induced nuclear reaction on tantalum: production of $^{178}$W/$^{178m}$Ta generator

open access: yes, 2014
In the frame of a systematic study of charged particle production routes of medically relevant radionuclei, the excitation function for indirect production of $^{178m}$Ta through $^{nat}$Hf($\alpha$,xn)$^{178}$W-$^{178m}$Ta nuclear reaction was measured ...
Ditrói, F.   +5 more
core   +1 more source

CCDC80 suppresses high‐grade serous ovarian cancer migration via negative regulation of B7‐H3

open access: yesMolecular Oncology, EarlyView.
PAX8 is a lineage‐specific master regulator of transcription in high‐grade serous ovarian cancer (HGSC) progression. We show for the first time that PAX8 facilitates proliferation and metastasis by repressing the cell autonomous tumor suppressor CCDC80 and inducing B7‐H3 expression.
Aya Saleh   +12 more
wiley   +1 more source

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