Results 31 to 40 of about 469 (213)

The Abundance of Gallium in B-Type Chemically Peculiar Stars [PDF]

The Astrophysical Journal, 1986
AbstractQuantitative analyses of the Ga abundances in 27 Hg-Mn stars, 11 Si (magnetic) stars, 8 He-weak stars, and 7 normal stars are made with the resonance lines of Ga II at 1414 Å and Ga III at 1495 Å in IUE spectra. The Ga overabundances are confirmed as a genuine anomaly in many peculiar stars. Only upper limits of the Ga abundance can be obtained
Masahide Takada-Hidai, Kozo Sadakane, Jun Jugaku   +2 more
openaire   +1 more source

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

FEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang, Hyo Been Jin, Chang Min Kim, So Yeon Lee, Hyun Ho Park   +4 more
wiley   +1 more source

The CoRoT chemical peculiar target star HD 49310 [PDF]

Astronomy & Astrophysics, 2015
Context: The magnetic chemically peculiar (CP) stars of the upper main sequence are well-suited laboratories for investigating the influence of local magnetic fields on the stellar surface because they produce inhomogeneities (spots) that can be investigated in detail as the star rotates.
Paunzen, Ernst, Fröhlich, Hans-Erich, Netopil, Martin, Weiss, Werner Wolfgang, Rank-Lüftinger, Theresa   +4 more
openaire   +2 more sources

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

FEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta, Hari Baskar Balasubramanian, Amir Pasokh, Marietta Zille   +3 more
wiley   +1 more source

Chemically peculiar stars investigated by the BRITE mission

Monthly Notices of the Royal Astronomical Society
ABSTRACT We present a comprehensive analysis of BRITE photometry for 85 chemically peculiar stars, aimed at refining or determining their rotational periods. Utilizing a uniform Lomb–Scargle-based pipeline, we derived significant periods for 47 targets.
Teja Begari, Klaus Bernhard, Ernst Paunzen, Prapti Mondal   +3 more
openaire   +2 more sources

Interpreting the Spectra of Chemically Peculiar Stars [PDF]

Highlights of Astronomy, 1995
Similarly to many astrophysical studies, a spectroscopic analysis of chemically peculiar (CP) stars requires extensive, accurate sets of atomic data. Our purpose is to show here that the CP stars can also serve as a laboratory for checking the accuracy of the atomic data.
openaire   +1 more source

TheKeplerview of magnetic chemically peculiar stars [PDF]

Astronomy & Astrophysics, 2018
Context. Magnetic chemically peculiar (mCP) stars exhibit complex atmospheres that allow the investigation of such diverse phenomena as atomic diffusion, magnetic fields, and stellar rotation. The advent of space-based photometry provides the opportunity for the first precise characterizations of the photometric variability properties of these stars ...
Hümmerich, Stefan, Mikulášek, Zdenek, Paunzen, Ernst, Bernhard, Klaus, Janík, Jan, Yakunin, Ilya A., Pribulla, Theodor, Vaňko, Martin, Matěchová, Lenka   +8 more
openaire   +2 more sources

Engineering peptides into antibodies—opportunities and strategies for therapeutic innovation

FEBS Letters, EarlyView.
Peptides and antibodies occupy complementary therapeutic niches. Peptides recognize difficult targets in a compact format, while antibodies add specificity, long half‐life, and effector functions. This review examines strategies that merge both modalities—peptide grafting into loops, terminal and Fc fusions, and bioconjugation—highlighting how ...
Jinling Wang, Ruslana Romaniuk, Hristo L. Svilenov   +2 more
wiley   +1 more source

Chromospheres of Chemically Peculiar Giant Stars [PDF]

International Astronomical Union Colloquium, 1989
AbstractA review is given of the chromospheres of evolved stars with peculiar chemical abundances, emphasizing the observed dependence of chromospheric properties upon the evolutionary status of the stars. Some old and new physical processes which are potentially important in determining the observed chromospheric features are discussed.
openaire   +1 more source

Modelling of variability of the chemically peculiar starϕDraconis [PDF]

Astronomy & Astrophysics, 2015
Context: The presence of heavier chemical elements in stellar atmospheres influences the spectral energy distribution (SED) of stars. An uneven surface distribution of these elements, together with flux redistribution and stellar rotation, are commonly believed to be the primary causes of the variability of chemically peculiar (CP) stars.
Prvák, M., Liska, Jiri, Krticka, Jirí, Mikulásek, Zdenék, Rank-Lüftinger, Theresa   +4 more
openaire   +3 more sources