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Preparação, caracterização e estudos termoanalíticos de bases de Schiff biopoliméricas e seus complexos de cobre.
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Química - PPGQ, 2004-12-13)
The present work is divided in three parts. The first part deals with the purification and characterization of commercial chitosan from different suppliers. The second part describes the synthesis and characterization of ...
Zéolitas ZSM-12 mesoporosas textura, cristalinidade e atividade ácida para o craqueamento de cicloexano
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Engenharia Química - PPGEQ, 2013-09-12)
The research addressed the generation of mesoporosity in the zeolite ZSM-12 (MTW). In the first part we studied the synthesis of ZSM-12 via conventional methodology and in the presence of a mesopore directing agent, ...
Complexos de cobre (II) com bases de Schiff tridentadas, tipo ONN e tetradentadas simétricas e assimétricas, tipo ONNO: síntese e caracterização e estudos como catalisadores na oxidação de catecóis
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Química - PPGQ, 2011-03-23)
Salen-type complexes are an important class of coordination compounds and are used as catalysts in various homogeneous and heterogeneous systems. Complexes of transition metals participate in many chemical processes, which ...
Estrutura de vidros fosfatos ternários no sistema Pb-Al metafosfato
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Física - PPGF, 2008-02-26)
In this work, the Pb-Al meta-phosphate glass system (1-x) Pb(PO3)2 xAl(PO3)3
was studied, with the aim of determining the structural effects induced in the glass network by
the substitution of Pb by Al. In the series of ...
Produtos naturais e derivados, complexação com o rutênio visando aumento da atividade citotóxica
(Universidade Federal de São CarlosUFSCarPrograma de Pós-Graduação em Química - PPGQCâmpus São Carlos, 2015-02-26)
This work involves the synthesis and characterization of three new series of ruthenium complexes containing gallic acid and derivatives cinnamic acid and salicylic acid and derivatives, as these ligands exhibit interesting ...
Overexpression of mitochondrial uncoupling protein 1 (UCP1) induces a hypoxic response in Nicotiana tabacum leaves
(Oxford University Press on behalf of the Society for Experimental Biology., 2015-10-22)
Mitochondrial uncoupling protein 1 (UCP1) decreases reactive oxygen species production under stress conditions by uncoupling the electrochemical gradient from ATP synthesis. This study combined transcriptome profiling with ...
Land use change alters the radiocarbon age and composition of soil and water-soluble organic matter in the Brazilian Cerrado
(2019-07-01)
The Brazilian Cerrado has undergone extensive land-use change in the past century with large areas converted to agriculture and silviculture. Eucalyptus is the dominant planted tree species in Brazil, but the short rotations ...
Assessment of p-aminophenol oxidation by simulating the process of hair dyeing and occurrence in hair salon wastewater and drinking water from treatment plant
(2020-04-05)
This work reports the study of oxidation reaction of p-aminophenol (PAP) in ammoniacal medium in dissolved atmospheric oxygen and hydrogen peroxide, simulating the process of hair dyeing with permanent dyes. The products ...
High tantalum oxide content in Eu3+-doped phosphate glass and glass-ceramics for photonic applications
(2020-11-25)
Transparent Eu3+-doped tantalum phosphate glass-ceramics containing Na2Ta8O21 nanocrystals were successfully obtained by a two-step heat treatment. Structural analyses were performed using X-ray diffraction, Transmission ...
NMR-based metabolite profiling of Selaginella convoluta in different hydration states and the unprecedented occurrence of anabasine in lycophytes
(2021-06-01)
Selaginella convoluta is a Brazilian endemic, desiccation tolerant plant with an effective drought-resistance mechanism. Herein, nuclear magnetic resonance (NMR)-based metabolite profiling was used to investigate this ...