Results 11 to 20 of about 1,115,245 (216)
Otimização e validação do método analítico volumétrico para quantificação do ácido tioglicólico em cremes cosméticos [PDF]
Infarma: Pharmaceutical Sciences, 2017 O ácido tioglicólico é um ativo utilizado em cremes cosméticos capilares com a função de alisar, ondular e depilar. A Resolução RDC 7/2015 da Anvisa, classifica os produtos em grau de risco I e II.
Maria Cristina SANTA BARBARA +1 more
doaj +1 more source
Gas Phase Structure and Reactivity of Doubly Charged Microhydrated Calcium(II)-Catechol Complexes Probed by Infrared Spectroscopy [PDF]
, 2014 Doubly charged microhydrated adducts formed from catechol and calcium(II) were produced in the gas phase using electrospray ionization (ESI) appearing as the most important ions in the mass spectra recorded. The gas phase structures of [Ca(catechol)2(H2O)
Arroyo Mañez, Pau +3 more
core +1 more source
Multicomponent synthesis of 4,4-dimethyl sterol analogues and their effect on eukaryotic cells [PDF]
, 2014 Most sterols, such as cholesterol and ergosterol, become functional only after the removal of the two methyl groups at C-4 from their biosynthetic precursors.
Alonso, Fernando +7 more
core +1 more source
Silver/dioxide titanium nanocomposites as biocidal treatments on limestones
Ge-conservación, 2017 Biodegradation of stones is a common and undesirable alteration in historical buildings. Restorers have been using different treatments, especially chemical methods, to prevent biodeterioration.
Javier Becerra Luna +2 more
doaj +1 more source
Synthetic epoxy-pregnan steroids: effects on anxiety behavior in rats [PDF]
, 2016 Neurosteroids like 3α-OH-5α-pregnan-20-one (allopregnanolone) and 3α-OH-5β-pregnan-20-one (pregnanolone) modulate the γ-aminobutyric acid-A (GABAA) receptor function and produce several effects that can be considered for therapeutical pruposes like ...
Coirini, Hector +2 more
core +1 more source
A Paper-Based Ultrasensitive Optical Sensor for the Selective Detection of H2S Vapors
Chemosensors, 2021 A selective and inexpensive chemical paper-based sensor for the detection of gaseous H2S is presented. The triggering of the sensing mechanism is based on an arene-derivative dye which undergoes specific reactions in the presence of H2S, allowing for ...
Alejandro P. Vargas +4 more
doaj +1 more source
Restoring rotational invariance for lattice QCD propagators
Journal of High Energy Physics, 2022 This note presents a method to reduce the discretization errors appearing when solving a Quantum Field Theory in a hypercubic lattice in both position and momentum-space.
F. de Soto
doaj +1 more source
Revista Latinoamericana de Difusión Científica, 2020 En la presente investigación el objetivo es demostrar la validez del método de mínimos cuadrados para el problema de la mortalidad en el Perú desde 1960-2020.
Ángel Huacal Vásquez
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Revista Chilena de Entomología, 2023 Aeshna affinis, known as “Southern Migrant Hawker, Blue-eyed Hawker” is a native odonate species uncommon in many areas of the Iberian Peninsula. Field observations in Andalusia, the southernmost peninsular region, are notably scarce. Several photographs
Manuel Ferreras-Romero +1 more
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Molecules, 2023 We report the use of a carboxylated pyrrolidine-fused chlorin (TCPC) as a fluorescent probe for the determination of glutathione (GSH) in 7.4 pH phosphate buffer.
Francisco G. Moscoso +5 more
doaj +1 more source