Results 21 to 30 of about 5,420 (218)

Natural Fluorite from Órgiva Deposit (Spain). A Study of Its Pozzolanic and Mechanical Properties

open access: yesCrystals, 2021
This work presents the results of the partial substitution of Portland cement (PC) by natural fluorite (NF) and calcined fluorite (CF) in mortars, at 10%, 25% and 40%.
Domingo A. Martín   +8 more
doaj   +1 more source

Shine on you crazy diamond: Symbolism and social use of fluorite ornaments in Iberia’s late prehistory

open access: yesJournal of Lithic Studies, 2021
Fluorite ornaments have been recorded in different sites of Europe since Upper Paleolithic. Due to its visual appearance and physical properties, some translucent or transparent mineralogies like fluorite were searched for or casually acquired by late ...
José Ángel Garrido-Cordero   +4 more
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

Optimal Depressants and Collector Dosage in Fluorite Flotation Process Based on DoE Methodology

open access: yesApplied Sciences, 2019
Alternative processes have been proposed for selective separation of fluorite and gangue minerals (carbonates and silicates) present in fluorspar ores.
J.R. Corpas-Martínez   +5 more
doaj   +1 more source

Effect of Fe3+ on Flotation Separation of Fluorite and Calcite in Sodium Silicate System

open access: yesKuangchan zonghe liyong, 2023
This is an essay in the field of mineral processing engineering. Fluorite and calcite are calcium-bearing minerals with similar physical and chemical properties.
Jiangfeng Ning   +5 more
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Partial depletion of plasminogen activator inhibitor‐1 decreases subcutaneous fat cell hypertrophy and liver cholesterol in high‐fat‐fed female mice

open access: yesFEBS Letters, EarlyView.
Obesity raises blood levels of PAI‐1, a protein linked to metabolic dysfunction‐associated steatotic liver disease in people with obesity. In female mice fed a high‐fat diet, partially lowering PAI‐1 led to smaller subcutaneous fat cells and lower liver cholesterol, without changing body weight or insulin sensitivity.
Claudia E. Ramirez Bustamante   +10 more
wiley   +1 more source

CORRIGENDUM - Chemistry of layered d-metal pnictide oxides and their potential as candidates for new superconductors

open access: yesScience and Technology of Advanced Materials, 2009
The description of the two types of layers in our article is inaccurate. All the [M2Pn2] and [M2Ch2] (M = d-metal; Pn = pnictogen; Ch = chalcogen) layers, which were described as 'fluorite-type', consist of square nets of M atoms coordinated ...
Tadashi C Ozawa and Susan M Kauzlarich
doaj   +1 more source

MINERALOGICAL AND GEOCHEMICAL FEATURES OF APATITE-FLUORITE ROCKS OF THE BURPALA MASSIF IN THE NORTHERN BAIKAL REGION

open access: yesГеодинамика и тектонофизика, 2022
The Burpala massif located in the Northern Baikal region contains ore-bearing pegmatites, carbonatites and apatite-fluorite rocks with Zr-Nb-REE-rare-metal mineralization.
I. A. Sotnikova   +2 more
doaj   +1 more source

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

open access: yesFEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri   +5 more
wiley   +1 more source

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