Results 181 to 190 of about 9,995 (232)

PIEZOELECTRIC PROPERTIES OF Ba2 NaNb5 O15

Applied Physics Letters, 1969
Single-crystal Ba2NaNb5O15 (z plate) has been found to have a piezoelectric coupling factor in the thickness longitudinal mode kt equal to 0.57. As a value of kt determined by direct measurement, this result is the highest value yet reported for a single-crystal ferroelectric material usable at and above room temperature.
A. W. Warner, G. A. Coquin, A. H. Meitzler, J. L. Fink   +3 more
openaire   +1 more source

O15. Non-invasive assessment of hemodynamics in early pregnancy

Pregnancy Hypertension: An International Journal of Women's Cardiovascular Health, 2011
study is to assess cardiac function/remodelling at mid-gestation in normotensive women, some of whom subsequently developed PE. Methods: This was a prospective study on 351 women assessed at 20-23 weeks gestation. In particular, women at increased risk of developing PE (127 with high resistance uterine artery Doppler indices and 79 with PE in a ...
Anne Marijn, van der Graaf, Gerda G, Zeeman, Henk, Groen, Eugenie R, Lumbers, Claire, Roberts, Gus A, Dekker   +5 more
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O15. Rhou function and the differentiation of endoderm progenitors

Differentiation, 2010
Fate mapping studies of the mouse embryo reveal that progenitors of the definitive or gut endoderm are recruited from the epiblast during gastrulation and they are incorporated into a pre-existing population of visceral endoderm which may also contribute to the tissues of the embryonic gut.
Patrick P.L. Tam, David A.F. Loebel
openaire   +1 more source

Mechanisms for the O16(He3, He4)O15 reaction

Nuclear Physics, 1959
BS>Excitation curves for the OO/sup 16/(He/sup 3/, alpha )O/sup 15/ and O/sup 16/(He /sup 3;p) F/sup 18/ reactions show pronounced resonance structure in the He/sup 3/ energy range from 2.0 to 3.0 Mev. It has been previously demonstrated that the energy dependenee of the alpha particle angular distribution coefficients in the region of the strongest ...
D.A. Bromley, J.A. Kuehner, E. Almqvist
openaire   +1 more source

O15 Using CRISPR-Cas9 to annotate the TYK2 pathway in psoriasis

British Journal of Dermatology, 2023
Abstract Genome-wide association studies (GWAS) have discovered genetic signals associated with psoriasis. This study is the first to validate functionally the psoriasis-associated single nucleotide polymorphism (SNP) rs892085 on TYK2 expression using clustered regularly interspaced short-palindromic repeat Cas9 endonuclease (CRISPR-Cas9)
Sarah Elyoussfi, Shraddha S Rane, Stephen  Eyre, Richard B Warren   +3 more
openaire   +1 more source

O15 Bioaccessibility of organosulphur compounds from Allium sativum

Biochemical Pharmacology, 2017
Garlic ( Allium sativum ), apart from its use as food, has been used as a medicinal plant for over 4000 years. Several investigations suggest that the biological and medical functions of garlic are due to the high content of organosulphur compounds. The bioaccessibility of the organosulphur compounds is an important factor for the evaluation of the ...
Gracia Marti, Gareth Evans, Liam Jones, Blanca Viadel, Begoña Ruiz, Elisa Gallego, Michael Graz   +6 more
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Structure and relaxor behavior of BaBi4Ti4−Zr O15 ceramics

Current Applied Physics, 2010
Abstract BaBi 4 Ti 4− x Zr x O 15 with x  = 0.1, 0.2, 0.3 and 0.5, has been synthesized via modified solid state reaction route. X-ray diffraction studies confirmed the formation of single phase Zr 4+ substituted BaBi 4 Ti 4 O 15 up to x  = 0.2.
A. Chakrabarti, J. Bera
openaire   +1 more source

Microwave dielectric properties of Ba3La2Ti2Nb2−Ta O15 ceramics

Materials Letters, 2007
Abstract High dielectric constant and low loss ceramics in the system Ba 3 La 2 Ti 2 Nb 2− x Ta x O 15 ( x  = 0–2) have been prepared by conventional solid-state ceramic route. Ba 3 La 2 Ti 2 Nb 2− x Ta x O 15 solid solutions adopted A 5 B 4 O 15 cation-deficient hexagonal perovskite structure for all compositions.
Liang Fang, Qian Yu, Hui Zhang, Chang-zheng Hu   +3 more
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Low frequency vibrational modes in Ba2 NaNb5 O15

Ferroelectrics, 1970
We have measured the Raman spectra of Ba2 NaNb5 O15 at temperatures from liquid nitrogen to 570°C. In the x(zzy scattering configuration a heavily damped mode was identified; and, its temperature dependence was sufficient to account for the dielectric anomaly found in this material. It is concluded that Ba2 NaNb5 O15 has a 'soft' A, vibrational mode as
L. C. Bobb, J. Dahl, I. Lefkowitz, L. Muldawer   +3 more
openaire   +1 more source

Structures of the O-polysaccharides of Salmonella enterica O59 and Escherichia coli O15

Carbohydrate Research, 2011
The O-polysaccharide of Salmonella enterica O59 was studied using sugar analysis and 2D (1)H and (13)C NMR spectroscopy, and the following structure of the tetrasaccharide repeating unit was established: →2)-β-d-Galp-(1→3)-α-d-GlcpNAc-(1→4)-α-l-Rhap-(1→3)-β-d-GlcpNAc-(1→ Accordingly, the O-antigen gene cluster of S.
Andrei V, Perepelov, Bin, Liu, Sof'ya N, Senchenkova, Alexander S, Shashkov, Dan, Guo, Lu, Feng, Yuriy A, Knirel, Lei, Wang   +7 more
openaire   +2 more sources