Results 91 to 100 of about 1,401,162 (283)

News from AG Draconis

Open Astronomy, 2012
AG Dra is a classical symbiotic star that undergoes major outbursts at intervals between 12-15 years. We present spectroscopic observations of four emission lines (Hα, Hβ, He II 4686 Å, Raman scattered OVI 6825 Å) before, during and after the major ...
Leedjärv L., Burmeister M.
doaj   +1 more source

Asteroseismology of red giants & galactic archaeology

, 2017
Red-giant stars are low- to intermediate-mass ($M \lesssim 10$~M$_{\odot}$) stars that have exhausted hydrogen in the core. These extended, cool and hence red stars are key targets for stellar evolution studies as well as galactic studies for several ...
A. Baglin, A. Datta, A. Helmi, A. Miglio, B. Mosser, B. Mosser, B. Mosser, B. Mosser, B. Paxton, C. Aerts, C. Allende Prieto, C. Chiappini, D. Kawata, D. Stello, D. Yong, D.R. Soderblom, E. Böhm-Vitense, E. Guggenberger, E.P. Bellinger, G.C. Angelou, G.R. Ricker, H. Kjeldsen, H. Lamb, H. Rauer, H.-W. Rix, I. Minchev, I. Minchev, J. Bland-Hawthorn, J. Bovy, J. Christensen-Dalsgaard, J. Christensen-Dalsgaard, J. Kumamoto, J. Lattanzio, K. Belkacem, K. Freeman, K. Schwarzschild, L. Girardi, L. Lindegren, M. Bergemann, M. Gabriel, M. Martig, M. Martig, M. Ness, M. Ness, M. Ness, M. Tassoul, M.A.C. Perryman, M.R. Merrifield, N. Gai, N. Langer, O. Creevey, P. Gaulme, P. Goldreich, P. Goldreich, P. Jofré, P. Ledoux, R. Kippenhahn, R. Trampedach, R.K. Ulrich, S. Hekker, S. Hekker, S. Refsdal, S. Sharma, S.B. Howell, S.R. Loebman, T. Constantino, T. Kallinger, T.M. Brown, T.R. Bedding, T.R. White, V.M. Canuto, W.J. Borucki, W.J. Chaplin   +72 more
core   +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

Correction of UBV Photometry for Emission Lines

Open Astronomy, 2003
We investigate the effect on U,B,V magnitudes of the removal of emission lines from the spectra of some symbiotic stars and novae during their nebular phases.
Skopal A.
doaj   +1 more source

Plasmodium falciparum gametogenesis essential protein 1 (GEP1) is a transmission‐blocking target

FEBS Letters, EarlyView.
This study shows Plasmodium falciparum GEP1 is vital for activating sexual stages of malarial parasites even independently of a mosquito factor. Knockout parasites completely fail gamete formation even when a phosphodiesterase inhibitor is added. Two single‐nucleotide polymorphisms (V241L and S263P) are found in 12%–20% of field samples.
Frederik Huppertz, Milagros Siebeck Caturelli, Lina S. Lehmann, Florian Kurth, Alexander G. Maier, Kai Matuschewski   +5 more
wiley   +1 more source

The changing face of acute low back pain management by physiotherapists, osteopaths and chiropractors in the UK: a 20-year comparison from 2003 to 2023

BMC Musculoskeletal Disorders
Background Low back pain (LBP) remains a leading source of disability and societal cost. In the UK, physiotherapists, osteopaths, and chiropractors are front-line providers of LBP care.
David W. Evans, Nadine E. Foster, Alan C. Breen, Tamar Pincus, Martin Underwood, Steven Vogel   +5 more
doaj   +1 more source

High-Resolution Spectroscopy of Cool Carbon-Rich and Metal-Poor Star HD 209621

Open Astronomy, 2012
Element abundances for HD 209621 obtained earlier display significant discrepancies, especially in the case of CNO and neutron-capture elements. Therefore we performed a detailed analysis of chemical composition of this star using a new high-resolution ...
Matrozis E., Začs L., Barzdis A.
doaj   +1 more source

Biophysical analysis of angiotensin II and amyloid‐β cross‐interaction in aggregation and membrane disruption

FEBS Letters, EarlyView.
Angiotensin II (AngII), a neuropeptide, interacts with amyloid‐β (Aβ), a key player in Alzheimer's disease. This study reveals that AngII reduces Aβ aggregation and membrane disruption in vitro. Biophysical assays and molecular modeling suggest AngII binds disordered Aβ forms, potentially modulating early amyloidogenic events and contributing to ...
Mohsen Habibnia, Eric Catalina‐Hernandez, Maialen Cabrerizo‐Idiazabal, Ramon Barnadas‐Rodríguez, Mario Lopez‐Martin, Alex Peralvarez‐Marin   +5 more
wiley   +1 more source

Wide Field Multicolor CCD Photometry in the Vicinity of the Open Cluster King 7

Open Astronomy, 2010
We present the results of CCD photometry in the seven-color Vilnius system for 1549 stars down to V ∼16 mag in a 1.5 square degree field around the cluster King 7, at the Perseus and Camelopardalis border.
Zdanavičius J., Čepas V., Zdanavičius K., Straižys V.   +3 more
doaj   +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