Results 31 to 40 of about 514,885 (296)

Deconstructing blazars: A different scheme for jet kinematics in flat-spectrum AGN [PDF]

, 2011
Recent VLBI studies of the morphology and kinematics of individual BL Lac objects (S5 1803+784, PKS 0735+178, etc.) have revealed a new paradigm for the pc-scale jet kinematics of these sources.
A. Eckart, A. Witzel, Agudo, Agudo, Antonucci, Britzen, Britzen, Britzen, Britzen, Britzen, Britzen, Britzen, Capetti, Cohen, Condon, Conway, de Vaucouleurs, Fan, Fanaroff, Gabuzda, Gabuzda, Ghisellini, Ghisellini, Giovannini, Gomez, Gong, Gong, Gómez, Hasinger, Heidt, Hook, Hopkins, Hough, Hovatta, J. A. Zensus, Jiang, Jorstad, Karouzos, Kellermann, Kellermann, Kudryavtseva, Lister, Lister, Lister, Lobanov, Lobanov, Lowe, Lähteenmäki, M. Karouzos, Madau, Marscher, Mimica, Morganti, Nesci, Padovani, Padovani, Pearson, Pelletier, Perucho, Pollack, Pushkarev, Rees, Roland, S. Britzen, Sol, Spergel, Steffen, Taylor, Urry, Vermeulen, Vermeulen, Wagner, Whitney, Xu   +73 more
core   +1 more source

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Quasi-periodicities of BL Lac Objects [PDF]

, 2018
We review the reports of possible year-long quasi-periodicities of BL Lac objects in the $\gamma$-ray and optical bands, and present a homogeneous time analysis of the light curves of PKS2155$-$304, PG1553+113, and BL Lac.
Covino, Stefano, Holgado, A. Miguel, Lindfors, Elina, Ramazani, V. Fallah, Sandrinelli, Angela, Sesana, Alberto, Treves, Aldo   +6 more
core   +2 more sources

The lac repressor

Comptes Rendus. Biologies, 2005
Few proteins have had such a strong impact on a field as the lac repressor has had in Molecular Biology. Over 40 years ago, Jacob and Monod [Genetic regulatory mechanisms in the synthesis of proteins, J. Mol. Biol. 3 (1961) 318] proposed a model for gene regulation, which survives essentially
openaire   +2 more sources

Labelling of lac‐permease [PDF]

FEBS Letters, 1972
N-Bromoacetyl fl-D-galactopyranosylamine has been shown to inactivate Zac-permease mediated accumulation of lactose in E. coli [l] *. The mechanism of inactivation of lactose uptake by this reagent was, however, not established. It was shown subsequently that N-bromoacetyl galactosylamine inactivates pgalactosidase by alkylating a methionyl residue ...
Yariv, Joseph, Kalb, A.Joseph, Yariv, Masha   +2 more
openaire   +2 more sources

Assessing the Sensitivity and the Clinical Impact of the 2023 American College of Rheumatology/EULAR Classification Criteria in Obstetric Antiphospholid Syndrome: Findings From a Multicenter Italian Cohort With a Long‐Term Follow‐Up

Arthritis Care &Research, EarlyView.
Objective The aim of this study was to evaluate the sensitivity of the 2023 American College of Rheumatology (ACR)/EULAR classification criteria for antiphospholipid syndrome (APS) in a real‐world cohort of women diagnosed with primary obstetric APS (oAPS) and to assess their ability to identify patients at risk of future pregnancy complications ...
Francesca Ruffilli, Cecilia Nalli, Francesca Crisafulli, Carlo Garaffoni, Marcello Govoni, Giulia Voltarel, Alba C. Pozzi, Beatrice Maranini, Ettore Silvagni, Alessandra Bortoluzzi, Angela Tincani   +10 more
wiley   +1 more source

Un système opérationnel de surveillance et d'alerte des proliférations de cyanobactéries : application aux plans d'eau landais

Sciences, Eaux & Territoires, 2017
Les grands plans d'eau landais accueillent des zones de baignade, surveillées régulièrement pour des raisons de santé publique par les services chargées de l'environnement de la communauté de communes des grands lacs (CCGL) et de la communauté de ...
C. LAPLACE-TREYTURE, S. MOREIRA, S. GOGIN, L. PICKHAHN, M. EON, A. JAMONEAU   +5 more
doaj   +1 more source

Rheumatoid Arthritis and Coronary Artery Calcium Progression: A Case Cohort Analysis from ELSA‐Brasil

Arthritis Care &Research, Accepted Article.
Objective To investigate the association between rheumatoid arthritis (RA) and coronary artery calcium (CAC) prevalence, incidence, and progression over four years in adults without prior cardiovascular disease. Methods A case‐cohort study within ELSA‐Brasil included 585 participants (86 RA, 499 controls). Longitudinal analyses were restricted to those
Patrícia Fonseca Estrada, Marcos R. N. Cavalcante, Itamar de Souza Santos, Márcio S. Bittencourt, Vandrize Meneghini, Paulo Andrade Lotufo, Alessandra C.Goulart, Isabela M. Bensenor   +7 more
wiley   +1 more source

Numerical Modeling of Tank Cars Carrying Hazardous Materials With and Without Composite Metal Foam

Advanced Engineering Materials, EarlyView.
Large‐scale puncture models consisting of hazardous materials (HAZMATs) tank car with protective steel–steel composite metal foam (S–S CMF) are solved numerically. Tank car plate with added 10.91–13.33 mm thick S–S CMF layer does not puncture. Protective S–S CMF absorbs impact energy, reduces plate deformation, and prevents shear bands formation ...
Aman Kaushik, Afsaneh Rabiei
wiley   +1 more source

Les Salmonidés dans les lacs de montagne français

Sciences, Eaux & Territoires
La capacité des Salmonidés à survivre dans les lacs de montagne reste mal connue et peut orienter leurs politiques de gestion. En se basant sur des données issues de neuf lacs de montagne, nous avons identifié que la condition corporelle des ombles ...
Victor FROSSARD, Arnaud SENTIS, Jean GUILLARD, Jean-Claude RAYMOND, Damien PRONER, Manu VALLAT, Chloé VAGNON   +6 more
doaj   +1 more source