Results 61 to 70 of about 114,576 (290)

Supercomputing and stellar dynamics

, 2009
In this paper I will outline some of the aspects and problems of modern celestial mechanics and stellar dynamics, in the context of the quickly growing computing facilities. I will point the attention on the great advantages in using, for astrophysical simulations, the modern, fast and cheap Graphic Processing Units (GPUs) acting as true supercomputers.
openaire   +3 more sources

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Preliminary communication on “stellar dynamics” [PDF]

Journal of the Franklin Institute, 1897
n ...
openaire   +1 more source

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

Observational dynamics of low-mass stellar systems

, 2014
The last fifteen years have seen the discovery of new types of low-mass stellar systems that bridge the gap between the once well-separated regimes of galaxies and of star clusters.
Frank, Matthias J.
core   +1 more source

Stellar dynamics of Cen A [PDF]

Monthly Notices of the Royal Astronomical Society, 1986
On a obtenu la premiere carte complete du champ des vitesses stellaires pour les 100 sec. d'arc. autour du noyau de la galaxie elliptique brillante NGC 5128 (Cen A) et on a obtenu des spectres complementaires a longue fente jusqu'a 400 sec. d'arc. suivant l'axe principal optique.
A. Wilkinson, R. M. Sharples, R. A. E. Fosbury, P. T. Wallace   +3 more
openaire   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Stellar Processes Near the Massive Black Hole in the Galactic Center

, 2005
A massive black hole resides in the center of most, perhaps all galaxies. The one in the center of our home galaxy, the Milky Way, provides a uniquely accessible laboratory for studying in detail the connections and interactions between a massive black ...
Abramowicz, Afonso, Aharonian, Aitken, Aitken, Alexander, Alexander, Alexander, Alexander, Alexander, Alexander, Alexander, Alexander, Alexander, Alexander, Allen, Allen, Artymowicz, Aschenbach, Ayal, Backer, Baes, Baganoff, Baganoff, Bahcall, Bahcall, Bahcall, Bailey, Bailyn, Balick, Barack, Baumgardt, Beloborodov, Bicknell, Biehle, Biehle, Binney, Blandford, Bogdanović, Bondi, Bower, Bower, Bozza, Brown, Brumberg, Cannizzo, Capozziello, Carr, Carter, Carter, Carter, Chakrabarty, Chanamé, Chanamé, Chandrasekhar, Chandrasekhar, Chandrasekhar, Chatterjee, Chatterjee, Clénet, Clénet, Cohn, Coker, Cox, Cuadra, Cuadra, Davidge, Davies, Davies, Davies, De Marco, De Paolis, Di Stefano, Diener, Doeleman, Eckart, Eckart, Eckart, Eckart, Eich, Eisenhauer, Eisenhauer, Evans, Fabian, Ferrarese, Ferrarese, Ferrarese, Figer, Figer, Figer, Figer, Figer, Fragile, Frank, Frank, Freitag, Freitag, Freitag, Frolov, Gair, Geballe, Gebhardt, Gebhardt, Genzel, Genzel, Genzel, Genzel, Genzel, Genzel, Genzel, Genzel, Gerhard, Gezari, Ghez, Ghez, Ghez, Ghez, Ghez, Ghez, Gingold, Glampedakis, Gnedin, Goldwurm, Gomboc, Gondolo, Goodman, Goodman, Gould, Gould, Gould, Gürkan, Haller, Hansen, Herrnstein, Hills, Hills, Hils, Hopman, Ivanov, Ivanov, Ivanov, Jackson, Jaroszynski, Jaroszynski, Jaroszynski, Jaroszyński, Kaaret, Kent, Khokhlov, Khokhlov, Kim, Kim, Kochanek, Kopeikin, Kormendy, Kosack, Koyama, Krabbe, Kumar, Lacy, Lacy, Laguna, Lai, Landau, Lauer, Lazio, Lee, Leonard, Leonard, Levin, Lightman, Liszt, Livne, Loeb, Loeb, Lombardi, Lombardi, Lucy, Luminet, Maeda, Maeder, Magorrian, Magorrian, Maillard, Maoz, Marr, Marshall, McGinn, McMillan, Melia, Melia, Menou, Menten, Merritt, Merritt, Merritt, Meylan, Mezger, Mezger, Miller, Miller, Milosavljević, Milosavljević, Miralda-Escudé, Monaghan, Morris, Morris, Morris, Mouawad, Muno, Munyaneza, Munyaneza, Murakami, Murakami, Murphy, Najarro, Narayan, Narayan, Narayan, Narayan, Navarro, Nayakshin, Nayakshin, Nayakshin, Nolthenius, Novikov, Nusser, Olling, Oppenheimer, Ostriker, Ott, Ott, Ouellette, Paczynski, Page, Paumard, Paumard, Pessah, Peters, Petters, Pfahl, Philipp, Pichon, Podsiadlowski, Podsiadlowski, Poon, Portegies Zwart, Portegies Zwart, Predehl, Press, Preto, Quataert, Quataert, Quinlan, Rasio, Rasio, Rauch, Rauch, Rees, Rees, Reid, Reid, Reid, Reid, Reid, Revnivtsev, Rieke, Rieke, Rockefeller, Rubilar, Sakano, Salim, Sanders, Sandquist, Schaller, Schödel, Schödel, Schödel, Scoville, Sellgren, Serabyn, Shakura, Shukla, Sigurdsson, Sigurdsson, Sigurdsson, Sills, Soltan, Sternberg, Sunyaev, Sunyaev, Syer, Syer, Tal Alexander, Tamblyn, Tanner, Tanner, Taylor, Thirring, Thorne, Tiede, Timmes, Torres, Tremaine, Tsiklauri, Ulmer, Ulmer, Vilkoviskij, Virbhadra, Vollmer, Wang, Wardle, Weinberg, Weinberg, Wilkinson, Wilson, Wollman, Young, Yu, Yu, Yusef-Zadeh, Yusef-Zadeh, Zahn, Zhao, Zoccali   +324 more
core   +1 more source

Central dark matter trends in early-type galaxies from strong lensing, dynamics and stellar populations [PDF]

, 2010
We analyze the correlations between central dark matter (DM) content of early-type galaxies and their sizes and ages, using a sample of intermediate-redshift (z ~ 0.2) gravitational lenses from the SLACS survey, and by comparing them to a larger sample ...
Auger, Auger, Auger, Bolton, Bolton, Cardone, Covone, Faure, Gavazzi, Gerhard, Gnedin, Graves, Koopmans, Koopmans, McGaugh, Navarro, Romanowsky, Spergel, Thomas, Treu, Walker   +20 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source