Results 51 to 60 of about 222,823 (148)

Synthesis, Identification, and anti-cancer Evaluation of Some heterocyclic Chitosan-Thiosemicarbazones compounds and their nickle (II) complexes

Results in Chemistry
Chitosan (CS) a chemical substance taken from the shells of sea creatures that has various uses in industry, farming, and medicine, for example in medical dressings.
Mohsin Omar Mohammed, Hameed Madlool Mohammed Alkubaisi, Nadia Qader Haj   +2 more
doaj   +1 more source

Difference Schemes for Elliptic Equations with Mixed Derivatives

Computational Methods in Applied Mathematics, 2004
AbstractIn this paper, the a priori estimates of stability in the energy and the uniform norms are proved for the monotone and conservative difference schemes approximating elliptic equations with mixed derivatives. The estimates are obtained without any assumption about the symmetry of the coe±cient matrix of the initial differential equation.
Matus, Peter, Rybak, Iryna
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Impulsive coupled systems with generalized jump conditions

Nonlinear Analysis, 2018
This work considers a second order impulsive coupled system with full nonlinearities, generalized impulse functions and mixed boundary conditions. This is the first time where such coupled systems are considered with nonlinearities with dependence on ...
Feliz Minhós, Robert de Sousa
doaj   +1 more source

Synthesis, biological activity and molecular modelling studies of shikimic acid derivatives as inhibitors of the shikimate dehydrogenase enzyme of Escherichia coli

Journal of Enzyme Inhibition and Medicinal Chemistry, 2018
Shikimic acid (SA) pathway is the common route used by bacteria, plants, fungi, algae, and certain Apicomplexa parasites for the biosynthesis of aromatic amino acids and other secondary metabolites.
Dulce Catalina Díaz-Quiroz, César Salvador Cardona-Félix, José Luis Viveros-Ceballos, Miguel Angel Reyes-González, Franciso Bolívar, Mario Ordoñez, Adelfo Escalante   +6 more
doaj   +1 more source

On the Solvability of a Mixed Problem for a High-Order Partial Differential Equation with Fractional Derivatives with Respect to Time, with Laplace Operators with Spatial Variables and Nonlocal Boundary Conditions in Sobolev Classes

Mathematics, 2019
In this paper, we study the solvability of a mixed problem for a high-order partial differential equation with fractional derivatives with respect to time, and with Laplace operators with spatial variables and nonlocal boundary conditions in Sobolev ...
Onur Alp İlhan, Shakirbay G. Kasimov, Shonazar Q. Otaev, Haci Mehmet Baskonus   +3 more
doaj   +1 more source

Mixed‐Valence Single‐Atom Catalyst Derived from Functionalized Graphene

Advanced Materials, 2019
AbstractSingle‐atom catalysts (SACs) aim at bridging the gap between homogeneous and heterogeneous catalysis. The challenge is the development of materials with ligands enabling coordination of metal atoms in different valence states, and preventing leaching or nanoparticle formation.
Bakandritsos, Aristides, Kadam, Ravishankar G., Kumar, Pawan, Zoppellaro, Giorgio, Medved', Miroslav, Tuček, Jiří, Montini, Tiziano, Tomanec, Ondřej, Andrýsková, Pavlína, Drahoš, Bohuslav, Varma, Rajender S., Otyepka, Michal, Gawande, Manoj B., Fornasiero, Paolo, Zbořil, Radek   +14 more
openaire   +6 more sources

Corrosion Inhibition of Aluminum in Hydrochloric Acid Solution Using Some Pyrazolocarbothioamide Derivatives

International Journal of Electrochemical Science, 2017
The corrosion performance of Al in 2M HCl in presence of pyrazolocarbothioamide derivatives have been investigated using electrochemical frequency modulation (EFM), Tafel polarization (PP), AC impedance (EIS) and mass reduction (MR) techniques.
A.S. Fouda, F.M. El-Taweel, M. Elgamil
doaj   +1 more source

Decay estimates and extinction properties of parabolic equations with classical and fractional time derivatives

Electronic Journal of Differential Equations
In this article, we study the decay estimates and extinction properties of weak solutions to some parabolic equations with classical and fractional time derivatives.
Fanmeng Meng, Xian-Feng Zhou
doaj  

Cauchy problem for the hyperbolic system with mixed derivatives

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
Cauchy problem for the hyperbolic system with mixed derivative is considered. The given system is transformed to the triangular or diagonal form for the further equations separation.
Elena A Kozlova
doaj  

Uninvited guest in mixed derivative Hořava gravity

Physical Review D, 2016
We revisit the mixed-derivative extension of Hořava gravity which was designed to address the naturalness problems of the standard theory in the presence of matter couplings. We consider the minimal theory with mixed-derivative terms that contain two spatial and two temporal derivatives.
Andrew Coates, Mattia Colombo, A. Emir Gümrükçüoğlu, Thomas P. Sotiriou   +3 more
openaire   +3 more sources