Results 171 to 180 of about 2,621 (202)

MPEC 2023-O30 : DAILY ORBIT UPDATE (2023 July 18)

2023
The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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Structure and gene cluster of the O-antigen of Escherichia coli O30

Carbohydrate Research, 2014
The acidic O-polysaccharide (O-antigen) of Escherichia coli O30 was isolated from the lipopolysaccharide and studied by sugar analysis and NMR spectroscopy. The following structure of the branched tetrasaccharide repeating unit was established, which is unique among known structures of bacterial polysaccharides: β-D-GlcpNAc--1→2--→4)-β-D-GlcpA-(1→4)-β ...
Andrei V, Perepelov, Xiyan, Hao, Sof'ya N, Senchenkova, Alexander S, Shashkov, Bin, Liu, Lei, Wang, Yuriy A, Knirel   +6 more
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195Pt NMR of Pt309Phen 36 * O30 Metallic Clusters

1992
195Pt NMR lineshape and spin-lattice relaxation measurements at 77 K are presented for the polynuclear metallic cluster compound Pt309Phen 36 * O30 Two peaks in the NMR lineshape are found centered at Ho/v0=1.110 G/kHz and 1.096 G/kHz. The high field peak is attributed to Pt spins located in the interior of the cluster which are in a metallic ...
D. Putten, H. B. Brom, L. J. Jongh, G. Schmid   +3 more
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O30-3 Ergonomic hazards at work and risk of preterm birth

Oral Session 30 – Reproductive 2, 2016
Objective Studies on the risk of preterm birth among women exposed to heavy lifting during pregnancy have provided conflicting results, and data on high-level exposures are limited. We addressed this limitation in a prospective cohort study on preterm birth among women with more extreme levels of ergonomic hazards at work, especially lifting. Methods
Iben Risager Knudsen, Sesilje Elise Bondo Petersen, Jens Peter Ellekilde Bonde, Ina Olmer Specht   +3 more
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The structure of the O-polysaccharide from the lipopolysaccharide of Providencia alcalifaciens O30

Carbohydrate Research, 2006
The O-polysaccharide was obtained by mild acid degradation of the lipopolysaccharide of Providencia alcalifaciens O30. Studies by sugar and methylation analyses along with (1)H and (13)C NMR spectroscopy, including two-dimensional (1)H,(1)H COSY, TOCSY, ROESY, and H-detected (1)H,(13)C HSQC, HMBC, and HMQC-TOCSY experiments, showed that the ...
Nina A, Kocharova, Olga G, Ovchinnikova, Agnieszka, Torzewska, Alexander S, Shashkov, Yuriy A, Knirel, Antoni, Rozalski   +5 more
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Ferroelectric and Ferrimagnetic Properties of (Ba6−2xR2x) (Nb9−xFe1+x)O30

Journal of Applied Physics, 1960
Materials which possess properties, which strongly suggest both ferroelectricity and ferrimagnetism, are found in the systems (Ba6−2xR2x) (Nb9−xFe1+x)O30 where R is a trivalent rare earth ion and x can vary from 0 to 1. X-ray diffraction powder patterns indicate a single phase having the potassium tungsten bronze type structure also exhibited by ...
P. H. Fang, R. S. Roth
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O30: Comparing the performance of HR-TOFMS and immunoassay for urine drug screening

Toxicologie Analytique et Clinique, 2014
Introduction Immunoassay screening tests are widely used in clinical and forensic toxicology. However, the emergence of new psychoactive substances (NPS) has challenged the scope and sensitivity of these methods. Consequently, specialized analytical toxicology laboratories are today relying more and more on mass spectrometry based techniques.
M. Sundström, A. Pelander, I. Ojanperä
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[Structure of the O-specific polysaccharide from Proteus mirabilis O30].

Biokhimiia (Moscow, Russia), 1996
Based on acid hydrolysis, methylation, and one- and two-dimensional 1H- and 13C-NMR spectroscopy, including homonuclear and 1H, 13C heteronuclear correlation spectroscopy (COSY) and rotating-frame nuclear Overhauser effect spectroscopy (ROESY); it was found that the O-specific polysaccharide chain of the lipopolysaccharide of the bacterium Proteus ...
A S, Shashkov, F V, Toukach, A, Zhiolkovskiĭ, N A, Paramonov, S N, Senchenkova, V, Katsa, Iu A, Knirel'   +6 more
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MPEC 2024-O30 : 2019 AR143

The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements. They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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Simultaneously enhanced ferroelectric and magnetic properties in Fe-substituted Ba4Sm2Fe Ti4-2Nb6+O30 ceramics

Journal of Alloys and Compounds, 2019
Abstract Ba4Sm2FexTi4-2xNb6+xO30 (x = 0, 0.5, 1, 1.5, 2) ceramics were prepared by standard solid-state reaction, and the filled tungsten bronze phase with space group P4bm was confirmed for all compositions. Systematic investigation of the Fe-substitution effects on dielectric, ferroelectric as well as magnetic properties was conducted. As the value
Jiang Sheng Hong, Yu Hui Huang, Xiao Qiang Liu, Juan Li, Yong Jun Wu   +4 more
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