Browsing by Title Facultad de Ciencias
Now showing items 6103-6122 of 8181
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(Universidad de Chile, 2013)Los insectos y las plantas vasculares son los taxa mas diversificados en nuestro planeta. En muchos casos ellos presentan una amplia intersección de sus ciclos de vida. Los insectos fitófagos, flores, tallos, etc. Se a ...
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(Universidad de Chile, 2010)
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(2012)α-Cyclodextrin (α-CD) inclusion compounds containing the carboxylic acids (octanoic, decanoic, lauric or dodecanoic, myristic or tetradecanoic, palmitic or hexadecanoic and stearic or octadecanoic) as guests were synthesized ...
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(1983)The chemical shifts of the NH and NH2 protons in N-methylthiourea dissolved in binary mixed solvents show a dependence on the solvent molar fractions typical of preferential solvation processes. The degree of preferential ...
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(Elsevier Inc., 2016)© 2016 Elsevier B.V. The spectrophotometric kinetic methods are broadly used in the determination of drugs in several types of matrices. Thermal Lens Spectrometry (TLS) has demonstrated to be a sensitive indirect ...
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(2011)In the Altiplano of the Iquique Province, Chile, a study was carried out for the purpose of advancing in the knowledge of the soils in the zone, to determine the soil moisture and soil temperature regimes, and to establish ...
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(Sociedad Chilena de Química, 1993-10-15)The electrochemistry 01 a series 01 monoamine oxidase-inhibitory 4-Nmethyl and N,N-dimethylaminophenethylamines was studied using cyclic voltammetry. Electron transler was irreversible both in aqueous buffer.(pH = 7.4) and ...
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(Public Library Science, 2015)Prenatal stress causes predisposition to cognitive and emotional disturbances and is a risk factor towards the development of neuropsychiatric conditions like depression, bipolar disorders and schizophrenia. The extracellular ...
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(Universidad de Chile, 2022)Los pesticidas se han convertido en una herramienta fundamental en el mundo agrícola debido a los beneficios que conlleva su uso, como el aumento en la producción y la disminución de pérdidas de hortalizas. Sin embargo, ...
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(Universidad de Chile, 2016)
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(Universidad de Chile, 2016)Una de las estrategias que permiten a los micromamíferos ahorrar energía en ambientes estacionales, es el sopor diario o profundo el cual es inducido por diversos factores, tales como la disminución de la temperatura ...
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(Universidad de Chile, 2015)Hoy en día, las membranas juegan un rol importante como herramienta de separación en muchos procesos industriales, entre otros, para la producción de agua pura y la Recuperación de reactivos o el tratamiento de aguas ...
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(Universidad de Chile, 2013)
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(2016)En este Seminario de Título. se estudió Ia degradación de clorofenol (CP) considerando que estos compuestos sirven como modelo de reacciones de moléculas más complej as" generalmente utilizadas como plaguicidas. Para ...
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(Universidad de Chile, 2008)
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(Universidad de Chile, 2023)La presencia de arsénico en el medio ambiente tiene cada vez más importancia debido a su toxicidad hacia los organismos vivos. Constantemente se informan nuevos métodos para reducir la presencia de este elemento en el medio ...
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(2012)The antimicrobial effect of incorporating silver nanoparticles (AgNps) into zirconia matrix-polyether glycol was studied. AgNps of 4-6 nm in size were synthesized using the inverse micelles method, and different doses of ...
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(SOC CHILENA QUIMICA, 2008-06)The effect of microwave irradiation (MW, 1.55 kW at 2450 MHz on the dissolution chitosan(CHI) and on the properties of the solutions was studied and the results compared with those obtained by using mechanical stirring. ...
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(Elsevier Science Ltd., 1999-11-15)AbstractÐThe preparation of N-methyl-BTHIQ (4) from N-phenylethyl-phenacetamide (1) by cyclization, reduction and N-alkyl- ation in acid medium has been achieved in good yield in a `one-pot' procedure. Acylation of imine ...
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(Springer, 2010)A new synthetic route to obtain high-purity strontium titanate, SrTiO3, using the sol–gel-hydrothermal reaction of TiCl4 and a SrCl2 solution in an oxygen atmosphere has been developed. In the synthesized products the ...