Results 11 to 20 of about 514,885 (296)

When Is BL Lac Not a BL Lac? [PDF]

open access: yesThe Astrophysical Journal, 1995
We have found broad Hα and Hβ line emission in spectra of BL Lacertae taken on 1995 May 21 and June 1: on those occasions BL Lac did not meet the defining criteria for the class named after it. The Hα line luminosity, ~2 × 1041 h-2 erg s-1 for H0 = 100 h km s-1 Mpc-1, is significantly above the detection threshold in older published spectra which do ...
R. C. Vermeulen   +7 more
openaire   +1 more source

La mer Baltique, un détour par la métaphore du lac

open access: yesConnexe, 2021
La mer Baltique semble constamment tiraillée entre son rôle d’appendice maritime ou continental et son statut de laboratoire de la gouvernance transnationale.
Nicolas Escach
doaj   +1 more source

Optimisation d’une méthode non intrusive de l’étude des populations de poissons en lac : l’hydro-acoustique

open access: yesSciences, Eaux & Territoires, 2023
L’hydro-acoustique est une méthode non intrusive d’échantillonnage des populations de poissons en écosystèmes lacustres qui permet d’estimer leur abondance et d’étudier leurs relations avec l’écosystème. Elle fait partie des procédures d’échantillonnage
Jean GUILLARD   +2 more
doaj   +1 more source

Plasmid copy number underlies adaptive mutability in bacteria. [PDF]

open access: yes, 2014
The origin of mutations under selection has been intensively studied using the Cairns-Foster system, in which cells of an Escherichia coli lac mutant are plated on lactose and give rise to 100 Lac+ revertants over several days. These revertants have been
Aboubechara, John Paul   +4 more
core   +1 more source

Prise en compte des hydrosystèmes hérités par les parcs naturels régionaux de Lorraine et du Morvan

open access: yesTerritoire en Mouvement, 2015
The natural regional park of Lorraine and Morvan must ensure the management and the development of a huge fishery and hydraulic heritage, inherited from former facilities.
Emmanuel Chiffre, Denis Mathis
doaj   +1 more source

Effect of Progressive Weight Loss on Lactate Metabolism: A Randomized Controlled Trial. [PDF]

open access: yes, 2018
OBJECTIVE:Lactate is an intermediate of glucose metabolism that has been implicated in the pathogenesis of insulin resistance. This study evaluated the relationship between glucose kinetics and plasma lactate concentration ([LAC]) before and after ...
Chondronikola, Maria   +7 more
core   +1 more source

Clustering environment of BL Lac object RGB 1745+398 [PDF]

open access: yes, 2008
The BL Lac object RGB 1745+398 lies in an environment that makes it possible to study the cluster around it more deeply than the environments of other BL Lac objects.
Bahcall   +40 more
core   +1 more source

NMR Study of the Interaction between the lac Repressor and the lac Operator [PDF]

open access: yesEuropean Journal of Biochemistry, 1983
Binding of the lac repressor headpiece, the N-terminal region of the lac repressor, to the lac operator of Escherichia coli was studied by 1H-NMR spectroscopy. Two DNA fragments, of 51 base pairs and 62 base pairs, containing the lac operator region, were investigated. The signals of their hydrogen-bonded imino protons were well resolved in the 500-MHz
BUCK, F   +8 more
openaire   +3 more sources

Providing sex and relationships education for looked-after children: a qualitative exploration of how personal and institutional factors promote or limit the experience of role ambiguity, conflict and overload among caregivers [PDF]

open access: yes, 2019
Objectives: To explore how personal and institutional factors promote or limit caregivers promoting sexual health and relationships (SHR) among looked-after children (LAC).
Elliott, Lawrie   +2 more
core   +3 more sources

Diagnostic and Prognostic Value of Interleukin-6 in Emergency Department Sepsis Patients

open access: yesInfection and Drug Resistance, 2022
Baozhong Yu, Maolin Chen, Ye Zhang, Yudan Cao, Jun Yang, Bing Wei, Junyu Wang Emergency Medicine Clinical Research Center, Beijing Chao-Yang Hospital, Capital Medical University, & Beijing Key Laboratory of Cardiopulmonary Cerebral Resuscitation ...
Yu B   +6 more
doaj  

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