Results 21 to 30 of about 216,833 (321)

Impedance and modulus studies of Na0.9Ba0.1Nb0.9(Sn0.5Ti0.5)0.1O3 ceramic

open access: yesJournal of Advanced Dielectrics, 2021
Polycrystalline Na0.9Ba0.1Nb0.9(Sn0.5Ti0.5)0.1O3 is prepared by the solid-state reaction technique. The formation of single-phase material was confirmed by an X-ray diffraction study and it was found to be a tetragonal phase at room temperature.
A. Oueslati, A. Aydi
doaj   +1 more source

Viscoelasticity of Edam cheese during its ripening

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2010
Series of the indentation of the ball (10 mm in diameter) by the constant speed into blocks of Edam cheese has been conducted. The indentation tests were performed at different speeds (1, 5, 10, 20 and 100 mm/min), and the corresponding force ...
Šárka Nedomová
doaj   +1 more source

Femtosecond laser enabled keratoplasty for advanced keratoconus

open access: yesIndian Journal of Ophthalmology, 2013
Purpose : To assess the efficacy and advantages of femtosecond laser enabled keratoplasty (FLEK) over conventional penetrating keratoplasty (PKP) in advanced keratoconus.
Yathish Shivanna   +3 more
doaj   +1 more source

Ocular allergy and keratoconus

open access: yesIndian Journal of Ophthalmology, 2013
Keratoconus is the most common corneal ectatic disorder, the cause of which is largely unknown. Many factors have been implicated, and the ocular allergy is being one of them.
Namrata Sharma   +3 more
doaj   +1 more source

First-principles insights on mechanical and electronic properties of TiX (X = C, N) in β-Si3N4 based ceramics [PDF]

open access: yesProcessing and Application of Ceramics, 2016
The mechanical and electronic properties of β-Si3N4, TiC-Si3N4 and TiN-Si3N4 ceramics are investigated using density functional theory implemented with GGA/PBE functional. The pristine β-Si3N4 exhibits fracture for a strain of 10%. However, TiC-Si3N4 and
Harsha Varthan Shanmugakumar   +2 more
doaj   +1 more source

Imaging modalities in keratoconus

open access: yesIndian Journal of Ophthalmology, 2013
Diagnosis of keratoconus has greatly improved from simple clinical diagnosis with the advent of better diagnostic devices like corneal topographers based on placido disc, elevation based topographers and lately optical coherence tomography (OCT).
Himanshu Matalia, Rishi Swarup
doaj   +1 more source

Effects of the Silicate Modulus of Water Glass on the Hydration and Mechanical Properties of Alkali-Activated Blast Furnace Ferronickel Slag

open access: yesFrontiers in Materials, 2021
Blast furnace ferronickel slag (BFNS), currently an underutilized metallurgical residue, was investigated for use as a precursor for alkaline activation.
Kuisheng Liu, Zhenguo Liu, Jianwei Sun
doaj   +1 more source

Contact lens in keratoconus

open access: yesIndian Journal of Ophthalmology, 2013
Contact lenses are required for the visual improvement in patients with keratoconus. Various contact lens options, such as rigid gas permeable (RGP) lenses, soft and soft toric lenses, piggy back contact lenses (PBCL), hybrid lenses and scleral lenses ...
Varsha M Rathi   +2 more
doaj   +1 more source

Mixed Hodge structures with modulus [PDF]

open access: yesJ. Inst. Math. Jussieu 21 (2022) 161-195, 2017
We define a notion of mixed Hodge structure with modulus that generalizes the classical notion of mixed Hodge structure introduced by Deligne and the level one Hodge structures with additive parts introduced by Kato and Russell in their description of Albanese varieties with modulus.
arxiv   +1 more source

Nisnevich topology with modulus [PDF]

open access: yesAnnals of K-Theory, 2020
In Voevodsky's theory of motives, the Nisnevich topology on smooth schemes is used as an important building block. In this paper, we introduce a Grothendieck topology on proper modulus pairs, which will be used to construct a non-homotopy invariant generalization of motives.
openaire   +5 more sources

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