Results 71 to 80 of about 166,438,504 (289)

Determination of Absolute Parameters and Investigation of Period Changes for the Double-lined Algol-type Binary UW Boo

The Astrophysical Journal
UW Boo is an Algol-type eclipsing binary with a period of 1.0047 days. We report the first detection of the double-lined spectroscopic nature of UW Boo through a joint analysis of a multisource spectroscopic dataset. This allows the derivation of precise
Hui-Ting Zhang, Sheng-Bang Qian, Wen-Ping Liao, Lin-Jia Li, Li-Ying Zhu   +4 more
doaj   +1 more source

Two Different Weak Modulations in ab-type RR Lyrae Variable V838 Cyg, and Potential Influence of Metal Abundance on Blazhko Modulation

The Astronomical Journal, 2023
Noting the weakest modulation and relatively high metal abundance of the ab-type RR Lyrae star V838 Cyg, we collected the photometric data of this star from several sky surveys to carry out an in-depth analysis. The O − C diagram shows that the pulsation
L.-J. Li, S.-B. Qian, X.-D. Shi, L.-Y. Zhu   +3 more
doaj   +1 more source

Energy Distributions and Fundamental Parameters of 6 A Stars [PDF]

International Astronomical Union Colloquium, 1993
AbstractThe energy distributions (EDs) of 6 peculiar (3 Aps and 3 λ Bootis) stars are presented from 1200Ȧ up to about 12000Ȧ. For those stars having infrared photometry, the integrated flux from 1200& to 22000Å has been calculated and the Infrared Flux Method (IRFM, Blackwell and Shallis, 1977) applied to derive effective temperatures and angular ...
openaire   +1 more source

Establishing an Apheresis Medicine Program in a Resource‐Constrained Setting: A 5‐Year Experience From Lagos, Nigeria

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Establishing a comprehensive apheresis medicine program in a resource‐constrained setting presents significant structural, financial, and logistical challenges. Despite the growing clinical importance of apheresis services globally, published experience from sub‐Saharan Africa remains sparse.
Folasade Adelekan‐Popoola, Shakirat Gold‐Olufadi, Olufunto Olufela Kalejaiye, Abdullateef Ogala, Rasheed A. Balogun   +4 more
wiley   +1 more source

Photometric and Spectroscopic Analysis of Eight Totally Eclipsing Contact Binaries with Small Mass Ratios

The Astrophysical Journal
This paper selected eight totally eclipsing contact binaries for photometric and spectroscopic studies. Spectral data were analyzed by University of Lyon Spectroscopic analysis Software, and photometric data were analyzed using PHOEBE through Markov ...
Li-Heng Wang, Kai Li, Ya-Ni Guo, Jing-Yi Wang, Xiang Gao, Xing Gao, Guo-You Sun   +6 more
doaj   +1 more source

Serum Myonectin Levels Are Positively Associated With Physical Function and Lower Frailty‐Related Limitation in Maintenance Hemodialysis Patients: A Cross‐Sectional Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Maintenance hemodialysis (MHD) patients frequently suffer from frailty, characterized by reduced physical function and poor prognosis. Myokines, such as myonectin, secreted by muscle, are emerging regulators of systemic health. This study investigated the relationship between serum myonectin, adipokines (adiponectin, omentin), and ...
Kenichi Kono, Yoshifumi Moriyama, Koji Ohashi, Naoya Otaka, Minako Tatsumi, Toyoaki Murohara, Noriyuki Ouchi, Satoru Oshima   +7 more
wiley   +1 more source

Identifying and Determining Atmospheric Parameters of Blue Horizontal-branch Stars Based on LAMOST DR11

The Astrophysical Journal Supplement Series
Large catalogs of blue horizontal-branch (BHB) stars are essential for studying substructures and kinematics of the Galactic halo. And accurate determination of atmospheric parameters for BHB stars provides insight into stellar evolution.
Xiao-Long Wang, Wen-Yuan Cui, Jie Ju, Guo-Zhen Hu, Min Fang, Shuai Zhang, Jia-Ming Liu   +6 more
doaj   +1 more source

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo, Weisi Dai, Jie Mao, Mei Ye, Xingshan Lu, Xiaocui Zhang   +5 more
wiley   +1 more source

Discovery of an Extremely r-process-enhanced Thin-disk Star with [Eu/H] = +0.78

The Astrophysical Journal Letters
Highly r -process-enhanced (RPE) stars are rare and usually metal poor ([Fe/H] < −1.0), and they mainly populate the Milky Way halo and dwarf galaxies. This study presents the discovery of a relatively bright ( V = 12.72), highly RPE ( r -II) star ([Eu ...
Xiao-Jin Xie, Jianrong Shi, Hong-Liang Yan, Tian-Yi Chen, Carlos Allende Prieto, Timothy C. Beers, Shuai Liu, Chun-Qian Li, Ming-Yi Ding, Yao-Jia Tang, Ruizhi Zhang, Renjing Xie   +11 more
doaj   +1 more source

Fundamental parameters of Ap-star HD 108662

, 2020
8 pages, 5 figures, accepted for publication in INASAN Science ...
Romanovskaya, A. M., Ryabchikova, T. A., Shulyak, D. V.   +2 more
openaire   +2 more sources