Results 11 to 20 of about 34,775 (190)

Interfacial Enrichment and Demetallation of a Zinc Porphyrin in the Ionic Liquid [C<sub>4</sub>C<sub>1</sub>Im][PF<sub>6</sub>]. [PDF]

open access: yesChemphyschem
Upon dissolution of zinc porphyrins with long dodecyl chains in the ionic liquid [C4C1Im][PF6], partial [PF6]‐ hydrolysis occurs along spontaneous porphyrin demetallation. Driven by their buoy‐like chains, the free‐base porphyrins extremely enrich at the outermost surface as proven by angle‐resolved X‐ray photoelectron spectroscopy, an interesting ...
Ceccatto A   +3 more
europepmc   +2 more sources

Effect of Septoria leaf blotch and its control with commercial fungicides, on arbuscular-mycorrhizal-fungal colonization, spore numbers, and morphotype diversity [PDF]

open access: yes, 2014
Arbuscular-mycorrhizal internal structures (i.e. total root colonization, arbuscules, vesicles) and external structures (i.e. spore density), and Glomeromycota spore morphotypes, were evaluated in wheat severely infected with Mycosphaerella graminicola –
Cabello, Marta Noemí   +3 more
core   +1 more source

Estudio longitudinal sobre la construcción de conceptos Enlace, solubilidad y conductividad

open access: yesEducación Química, 2018
La finalidad central de este estudio se orienta hacia la búsqueda de las concepciones previas de los estudiantes de licenciatura en Química de la Facultad de Química de la UNAM, acerca de conceptos cuya adquisición resulta indispensable para comprender ...
Ana E. Domínguez   +3 more
doaj   +1 more source

Theoretical and experimental study of a new thiosulfonate derivative: Methyl trifluoromethanethiosulfonate, CF3SO2SCH3. Conformational transferability in CX3SO2S-R compounds [PDF]

open access: yes, 2017
Methyl trifluoromethanethiosulfonate, CF3SO2SCH3, was synthesized and characterized by 13C NMR, 19F NMR, and vibrational spectroscopy. This structural study was supported by MP2 and DFT (B3LYP and MPW1PW91) calculations, which revealed a strong ...
Ben Altabef, Aída   +5 more
core   +1 more source

Opacificación y endurecimiento de vidriados cerámicos mediante scheelita

open access: yesRevista de Metalurgia, 2001
En esta comunicación se presentan los resultados obtenidos en la utilización de scheelita obtenida por diferentes procedimientos (ruta cerámica y precipitación química) en la opacificación y endurecimiento de vidriados cerámicos comparándose los ...
J. B. Vicent   +3 more
doaj   +1 more source

Comment on “The diatomic dication CuZn2+ in the gas phase” [J. Chem. Phys. 135, 034306 (2011)] [PDF]

open access: yes, 2013
In this Comment, the density functional theory (DFT) calculations carried out by Diez et al. [J. Chem. Phys. 135, 034306 (2011)10.1063/1.3613624] are revised within the framework of the coupled-cluster single double triple method.
Alonso, Julio A.   +2 more
core   +1 more source

Two-Sided Antibacterial Cellulose Combining Probiotics and Silver Nanoparticles

open access: yesMolecules, 2021
The constant increase of antibiotic-resistant bacteria demands the design of novel antibiotic-free materials. The combination of antibacterials in a biocompatible biomaterial is a very promising strategy to treat infections caused by a broader spectrum ...
Laura Sabio   +3 more
doaj   +1 more source

Rat liver antioxidant response to iron and copper overloads [PDF]

open access: yes, 2014
The rat liver antioxidant response to Fe and Cu overloads (0–60 mg/kg) was studied. Dose- and time-responses were determined and summarized by t1/2 and C50, the time and the liver metal content for half maximal oxidative responses.
Boveris, Alberto Antonio   +8 more
core   +1 more source

Recursos per treballar a l’aula la formulació i nomenclatura de química inorgànica

open access: yesCiències, 2015
L’article presenta diversos recursos i activitats elaborats per l’autor que permeten treballar la formulació i nomenclatura de química inorgànica a les classes de química d’educació secundària i de batxillerat, seguint les darreres recomanacions ...
José Ángel Hernández Santadaríao
doaj   +1 more source

Synthesis, structural and spectroscopic characterization of thallium(I) acesulfamate [PDF]

open access: yes, 2015
The new acesulfamate salt, TlC4H4NO4S, was prepared by reaction of acesulfamic acid and thallium(I) carbonate in aqueous solution. Its crystal and molecular structure was determined by single crystal X-ray diffraction methods. The substance crystallizes
Baran, Enrique José   +3 more
core   +2 more sources

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