Results 51 to 60 of about 2,321,585 (305)

First robotic monitoring of a lensed quasar: intrinsic variability of SBS 0909+532 [PDF]

, 2007
To go into the details about the variability of the double quasar SBS 0909+532, we designed a monitoring programme with the 2 m Liverpool Robotic Telescope in the r Sloan filter, spanning 1.5 years from 2005 January to 2006 June.
A. Ullán, A.P. Zheleznyak, Aretxaga, Balbus, Beskin, Burud, Chartas, Cid Fernandes, Collier, de Vries, E. Koptelova, Edelson, Gaskell, Gil-Merino, Gil-Merino, Giveon, Goicoechea, Hawkins, Kawaguchi, Kerins, Kochanek, Kochanek, Koptelova, Krolik, Kundić, L.J. Goicoechea, Lehár, Lehár, Lubin, Manmoto, Mediavilla, Mineshige, Negoro, Ofek, Oknyanskij, Oscoz, Oscoz, Page, Paraficz, R. Gil-Merino, Refsdal, Schmidt, Serra-Ricart, Shakura, Shakura, Simonetti, Steele, Ullán, Uttley, V.N. Shalyapin, Vanden Berk, Wambsganss   +51 more
core   +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

Light Curve Analysis of Contact Binary System V523 Cassiopeiae [PDF]

Journal of Astronomy and Space Sciences, 2002
A total of 616 observations (308 in B, 308 in V) for V523 Cas was made on three nights from October 19 to 21 in 1999 using the 1.8m telescope with 2K CCD camera of the Bohyunsan Optical Astronomy Observatory of KAO.
J. H. Kim, J. H. Jeong
doaj   +1 more source

Eclipsing binaries observed with the WIRE satellite. II, β Aurigae and non-linear limb darkening in light curves [PDF]

, 2007
Aims. We present the most precise light curve ever obtained of a detached eclipsing binary star and use it investigate the inclusion of non-linear limb darkening laws in light curve models of eclipsing binaries.
Bruntt, H., Buzasi, D. L., Southworth, J. (John)   +2 more
core   +2 more sources

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

SYNTHETIC LIGHT CURVE OF R CORONAE BOREALIS

Odessa Astronomical Publications, 2017
The model for brightness variations of CrB is proposed.
A. F. Pugach, G. U. Kovalchuk
doaj   +1 more source

Observations and light curve solutions of four ultrashort-period binaries [PDF]

Serbian Astronomical Journal, 2016
The paper presents light curve solutions of our observations of four new ultrashort-period eclipsing binaries with MS components. Two of them have periods almost at the upper limit (0.22 days) of the ultrashort-period binaries, while the periods
Kjurkchieva D., Popov V., Vasileva D., Petrov N.   +3 more
doaj   +1 more source

Modelling the light-curve of KIC 12557548b: an extrasolar planet with a comet like tail

, 2013
An object with a very peculiar light-curve was discovered recently using Kepler data. Authors argue that this object may be a transiting disintegrating planet with a comet like dusty tail. We calculate the light-curves of stars with such planets and take
Batalha, Bisikalo, Borucki, Bourrier, Brogi, Budaj, Budaj, Burrows, Carroll, Claret, Clover, Cohen, Cuntz, Deirmendjian, Dorschner, Faigler, Galan, Guillot, Guinan, Gurdemir, Hoard, Hubbard, Ip, J. Budaj, Jackson, Jia, Johnson, Jäger, Knutson, Kocifaj, Krejčová, Kuchar, Lanza, Leadbeater, Lecavelier Des Etangs, Lecavelier Des Etangs, Lopez, L’eger, Mandel, Miller, Mura, Muthumariappan, Ordal, Perez-Becker, Rappaport, Rucinski, Sadakane, Sekanina, Shi, Shkolnik, Shkolnik, Southworth, Stellingwerf, Tian, Valencia, Vidal-Madjar, Vidal-Madjar, Vourlidas, Yelle   +58 more
core   +1 more source

The Near Infrared and Multiwavelength Afterglow of GRB 000301c [PDF]

, 2000
We present near-infrared observations of the counterpart of GRB 000301c. The K' filter (2.1 micron) light curve shows a well-sampled break in the decay slope at t=3.5 days post-burst.
Andrew S. Fruchter, James E. Rhoads, Masetti N., Sagar R.   +3 more
core   +2 more sources

Linked dimers of the AAA+ ATPase Msp1 reveal energetic demands and mechanistic plasticity for substrate extraction from lipid bilayers

FEBS Letters, EarlyView.
Cells must clear mislocalized or faulty proteins from membranes to survive. The AAA+ ATPase Msp1 performs this task, but dissecting how its six subunits work together is challenging. We engineered linked dimers with varied numbers of functional subunits to reveal how Msp1 subunits cooperate and use energy to extract proteins from the lipid bilayer ...
Deepika Gaur, Brian Acquaviva, Baylee A. Smith, Nathan Walker, Isabella Walter, Matthew L. Wohlever   +5 more
wiley   +1 more source