Results 31 to 40 of about 51,953 (279)
The Identification of Hydrogen-Deficient Cataclysmic Variable Donor Stars [PDF]
, 2018 We have used ATLAS12 to generate hydrogen-deficient stellar atmospheres to allow us to construct synthetic spectra to explore the possibility that the donor stars in some cataclysmic variables (CVs) are hydrogen deficient. We find that four systems, AE Aqr, DX And, EY Cyg, and QZ Ser have significant hydrogen deficits.
arxiv +1 more source
Recommendations for dispensing magnesium products in pharmacy practice and primary health care
Family Medicine & Primary Care ReviewMagnesium is involved in many essential functions in the body, with a deficiency leading to possible cardiological, metabolic, neurological and rheumatological diseases, among others.
Piotr Merks +13 more
doaj +1 more source
Рациональная фармакотерапия в кардиологии, 2020 Data on the effect of magnesium on the homeostasis of the body and on the cardiovascular system, are presented in the article. These data supplement information on studies of the role of magnesium in many body processes.
A. S. Safaryan +2 more
doaj +1 more source
Accretion and diffusion in the DAZ white dwarf GALEX J1931+0117 [PDF]
, 2010 We present an analysis of high-dispersion and high signal-to-noise ratio spectra of the DAZ white dwarf GALEX J1931+0117. The spectra obtained with the VLT-Kueyen/UV-Visual Echelle Spectrograph show several well-resolved Si II spectral lines enabling a study of pressure effects on line profiles.
arxiv +1 more source
An extremely metal-deficient globular cluster in the Andromeda Galaxy [PDF]
Published online by the journal Science on THURSDAY, 15 October,
2020, 2020 Globular clusters (GCs) are dense, gravitationally bound systems of thousands to millions of stars. They are preferentially associated with the oldest components of galaxies, and measurements of their composition can therefore provide insight into the build-up of the chemical elements in galaxies in the early Universe.
arxiv +1 more source
Hypomagnesemia in Chronic Kidney Disease: Problem or Individual Characteristics of Certain Patients?
Počki, 2016 The article considers the problem of magnesium deficiency in patients with chronic kidney disease. It requires special attention from clinicians due to the increased risk of cardiovascular complications. The study revealed that one third of patients with
L.M. Savytska
doaj +1 more source
Possible Signs of Water and Differentiation in a Rocky Exoplanetary Body [PDF]
, 2010 Spitzer observations reveal the presence of warm debris from a tidally destroyed rocky and possibly icy planetary body orbiting the white dwarf GD 61. Ultraviolet and optical spectroscopy of the metal-contaminated stellar photosphere reveal traces of hydrogen, oxygen, magnesium, silicon, iron, and calcium.
arxiv +1 more source
FEBS Letters, EarlyView.LHCPs are transported to the thylakoid membrane via the (cp)SRP pathway. This process involves a transit complex of (cp)SRP43, (cp)SRP54 and LHCP, which interacts with (cp)FtsY and Alb3 at the membrane. GTP hydrolysis by (cp)SRP54 and (cp)FtsY triggers complex dissociation.
Victor Zegarra +7 more
wiley +1 more source
Magnesium supplementation during pregnancy
Медицинский совет, 2018 Magnesium is a unique microelement in the human body which is necessary for all organs and systems to be sustained. During pregnancy, the need for magnesium is significantly increased due to functioning of the mother-placenta-fetus system, the ...
E. G. Khilkevich, O. I. Lisicyna
doaj +1 more source
Chandra and FUSE spectroscopy of the hot bare stellar core H1504+65 [PDF]
Astron.Astrophys. 421 (2004) 1169-1183, 2004 H1504+65 is an extremely hot hydrogen-deficient white dwarf with an effective temperature close to 200,000 K. We present new FUV and soft X-ray spectra obtained with FUSE and Chandra, which confirm that H1504+65 has an atmosphere primarily composed of carbon and oxygen.
arxiv +1 more source