Results 41 to 50 of about 77,404 (196)

Determination of Tetracycline in Pharmaceutical Preparation by Molecular and Atomic Absorption Spectrophotometry and High Performance Liquid Chromatography via Complex Formation with Au(III) and Hg(II) Ions in Solutions

International Journal of Analytical Chemistry, 2013
UV-visible and atomic spectrophotometry and HPLC techniques were applied for the determination of tetracycline (TC) in pharmaceutical preparations via complexation of the drug with Au(III) and Hg(II) ions in solutions.
Ahlam Jameel Abdulghani, Hadi Hassan Jasim, Abbas Shebeeb Hassan   +2 more
doaj   +1 more source

System failure? Exploring the interplay of fear of failure, competition, cooperation and sense of belonging in education in England and Flanders

British Educational Research Journal, EarlyView.
Abstract Fear of failure is damaging in a host of ways yet is rife in many schools. Drawing on self‐worth theory, we explore whether fear of academic failure is higher in education systems with features that increase students' experiences of competition. To do this, we compare two very different education systems: England, where, for instance, national
Carolyn Jackson, Mieke Van Houtte
wiley   +1 more source

Compact-calibres of regular and monotonically normal spaces

International Journal of Mathematics and Mathematical Sciences, 2002
A topological space has calibre ω1 (resp., calibre (ω1,ω)) if every point-countable (resp., point-finite) collection of nonempty open sets is countable.
David W. Mcintyre
doaj   +1 more source

Structural Aspects of Lithium‐Ion Conduction in the Phosphidotitanate Li8TiP4 and Its Comparison With Li7+5xTa1−xP4 and Li8−xTi1−xTaxP4

Chemistry – A European Journal, EarlyView.
ABSTRACT The chemical system Li/Ti/P has previously been subject to intensive investigation. However, reliable structural data for the reported phases have remained elusive. Motivated by the growing interest in phosphorus‐based lithium‐ion conductors, we have reinvestigated the synthesis, crystal structure, and physical properties of Li8TiP4.
David Müller, Tobias Kutsch, Sabine Zeitz, Viktor Hlukhyy, Gabriele Raudaschl‐Sieber, Wilhelm Klein, Thomas F. Fässler   +6 more
wiley   +1 more source

Distinct Ligand‐ and Metal‐Centered Phosphorescence in a Terbium Carbazolyl Complex

Chemistry – A European Journal, EarlyView.
Terbium and lanthanum carbazolide complexes show two distinct modes of luminescence: Strongly temperature‐dependent narrow‐line terbium emission could be induced. In addition, both the terbium and the lanthanum complexes show broad‐line interligand emission processes with excited states of microsecond life‐time.
Xiaofei Sun, Frederic Krätschmer, Julia Feye, Marcel Lukanowski, Dominik Graf, Sergei Lebedkin, Manfred Kappes, Florian Weigend, Peter W. Roesky, Alexander Hinz   +9 more
wiley   +1 more source

Subuniformity of harmonic mean p$$ p $$‐values

Canadian Journal of Statistics, EarlyView.
Abstract We obtain several inequalities on the generalized means of dependent p$$ p $$‐values. In particular, the weighted harmonic mean of p$$ p $$‐values is strictly subuniform under several dependence assumptions of p$$ p $$‐values, including independence, negative upper orthant dependence, the class of extremal mixture copulas, and some Clayton ...
Yuyu Chen, Ruodu Wang, Yuming Wang, Wenhao Zhu   +3 more
wiley   +1 more source

P-union and P-intersection of neutrosophic cubic sets

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2017
Conditions for the P-intersection and P-intersection of falsity-external (resp. indeterminacy-external and truth-external) neutrosophic cubic sets to be an falsity-external (resp.
Jun Young Bae, Smarandache Florentin, Kim Chang Su   +2 more
doaj   +1 more source

Sustainability Certification and Tourist Behavior: The Role of Trust in Certification Bodies and Destination Social Responsibility

Corporate Social Responsibility and Environmental Management, EarlyView.
ABSTRACT Tourism is under growing pressure to adopt sustainable practices due to the negative impacts of mass tourism on destinations. Sustainability certification schemes (SCS) have emerged as voluntary governance tools that signal responsible practices and reduce information asymmetry.
Patricia Martínez García de Leaniz, Ángel Herrero Crespo, María del Mar García de los Salmones   +2 more
wiley   +1 more source

Superstability for Generalized Module Left Derivations and Generalized Module Derivations on a Banach Module (I)

Journal of Inequalities and Applications, 2009
We discuss the superstability of generalized module left derivations and generalized module derivations on a Banach module. Let 𝒜 be a Banach algebra and X a Banach 𝒜-module, f:X→X and g:𝒜→𝒜.
Huai-Xin Cao, Ji-Rong Lv, J. M. Rassias
doaj   +1 more source

The Virial Expansion of the Hydrogen Equation of State in Comparison to PIMC Simulations: The Quasiparticle Concept, IPD, and Ionization Degree

Contributions to Plasma Physics, EarlyView.
ABSTRACT The properties of plasmas in the low‐density limit are described by virial expansions. Analytical expressions are known for the lowest virial coefficients from Green's function approaches. Recently, accurate path‐integral Monte Carlo (PIMC) simulations were performed for the hydrogen plasma at low densities by Filinov and Bonitz (Phys. Rev.
Gerd Röpke, Chengliang Lin, W. Ebeling, H. Reinholz   +3 more
wiley   +1 more source