Results 51 to 60 of about 2,354,988 (346)

The Orbital Light Curve of Aquila X-1 [PDF]

, 2000
We obtained R- and I-band CCD photometry of the soft X-ray transient/neutron- star binary Aql X-1 in 1998 June while it was at quiescence. We find that its light curve is dominated by ellipsoidal variations, although the ellipsoidal variations are ...
Chevalier C., Chevalier C., Claret A., Edward L. Robinson, Harmon B. A., Patrick Young, Shahbaz T., Shahbaz T., William F. Welsh   +8 more
core   +3 more sources

Multiband embeddings of light curves

Astronomy & Astrophysics
In this work, we propose a novel ensemble of recurrent neural networks (RNNs) that considers the multiband and non-uniform cadence without having to compute complex features. Our proposed model consists of an ensemble of RNNs, which do not require the entire light curve to perform inference, making the inference process simpler. The ensemble is able to
I. Becker, P. Protopapas, M. Catelan, K. Pichara   +3 more
openaire   +2 more sources

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Can Kilonova Light Curves Be Standardized? [PDF]

The Astrophysical Journal Letters, 2019
Abstract Binary neutron star (NS) mergers have been recently confirmed to be the progenitors of the optical transients kilonovae (KNe). KNe are powered by the radioactive decay of neutron-rich elements (r-process elements), which are believed to be the product of disruption of NSs during their merger.
Rahul Kashyap, Gayathri Raman, Parameswaran Ajith   +2 more
openaire   +2 more sources

Light along curves: photonic shaping tools

Advanced Optical Technologies, 2023
A structured light concept is reported enabling to distribute a large number of focus copies at arbitrary positions in a working volume. Applying this holographic 3D-beam splitter concept to ultrashort laser pulses allows to deposit energy along accelerating trajectories in the volume of transparent materials.
Daniel Flamm, Myriam Kaiser, Julian Hellstern, Max Kahmann, Jonas Kleiner, Christoph Tillkorn   +5 more
openaire   +1 more source

4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase in malaria parasites and enhances atovaquone efficacy

FEBS Letters, EarlyView.
Atovaquone is an antimalarial requiring potentiation for sufficient efficacy. We pursued strategies to enhance its activity, showing that 4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase, decreasing ubiquinone biosynthesis. Since atovaquone competes with ubiquinol in mitochondria, 4‐nitrobenzoate facilitates its action, potentiating ...
Ignasi Bofill Verdaguer, Matheus Felipe Santos, Maurício Mazzine Filho, Gabriela Oliveira Castro, Agustín Hernández, Manoel Aparecido Peres, Alejandro Miguel Katzin, Marcell Crispim   +7 more
wiley   +1 more source

Modeling the TESS Light Curve of Ap Si Star MX TrA

Universe
The TESS light curve of the silicon Ap star MX TrA was modeled using the observational surface distribution of silicon, iron, helium, and chromium obtained previously with the Doppler Imaging technique.
Yury Pakhomov, Ilya Potravnov, Anna Romanovskaya, Tatiana Ryabchikova   +3 more
doaj   +1 more source

The Konkoly Blazhko Survey: Is light-curve modulation a common property of RRab stars?

, 2009
A systematic survey to establish the true incidence rate of the Blazhko modulation among short-period, fundamental-mode, Galactic field RR Lyrae stars has been accomplished. The Konkoly Blazhko Survey (KBS) was initiated in 2004. Since then more than 750
Alard, Alcock, B. Belucz, B. Szeidl, Bookmeyer, Castellani, Collinge, ESA, Fitch, G. Hajdu, I. Nagy, J. Jurcsik, Jones, Jurcsik, Jurcsik, Jurcsik, Jurcsik, Jurcsik, Jurcsik, Jurcsik, Jurcsik, Jurcsik, Jurcsik, Jurcsik, K. Posztob��nyi, K. Vida, Kholopov, Kolenberg, Kov��cs, Kov��cs, Kun, L. Moln��r, Layden, Lub, M. V��radi, Mizerski, Moskalik, Pojmanski, Preston, Schmidt, Shibahashi, Smith, Smith, Smolec, Soszy��ski, Sturch, Suntzeff, Szczygie��, Szeidl, Szeidl, S��dor, S��dor, S��dor, S��dor, Wils, Wo��niak, Zs. Hurta, Zs. K��v��ri, ��. S��dor   +58 more
core   +1 more source