Results 41 to 50 of about 1,011 (179)

Química de sistemas supramoleculares constituídos por porfirinas e complexos metálicos Chemistry of supramolecular systems containing porphyrins and metal complexes

open access: yesQuímica Nova, 2002
Supramolecular chemistry is expected to keep a high developing pace in the next years, giving support to the advancement of molecular devices and nanotechnology.
Koiti Araki, Henrique Eisi Toma
doaj   +1 more source

Biosíntesis de porfirinas : Formación de porfirinas a partir de ácido delta amino levúlico y porfobilinógeno, en distintos sistemas. Firiaporfirina III, su identificación con la Pseudo-uroporfirina. Biosíntesis y significado biológico [PDF]

open access: yes, 1962
El presente estudio tiene por objeto: la biosíntesis e identificación de porfirinas formadas in vitro por sistemas de GR o fracciones de los mismos en presencia de ácido delta amino levúlico o porfobilinógeno; la investigación de la naturaleza química de
Batlle, Alcira María del Carmen
core   +1 more source

Libertação de ibuprofeno de hidrogéis de PVA contendo porfirinas [PDF]

open access: yes, 2011
Os sistemas de libertação de fármacos são importantes no campo da investigação de polímeros e das ciências farmacêuticas. Os hidrogéis são componentes importantes nos dispositivos médicos, especialmente em implantes e veículos de libertação controlada.
Marques, Sónia do Carmo Couceiro
core  

SÍNTESIS DE MESO-TETRAFENILPORFIRINA Y SU COMPLEJACIÓN CON METALES USANDO QUÍMICA VERDE

open access: yesAvances en Ciencias e Ingeniería, 2019
En este trabajo se describe la preparación del ligando meso-tetrafenilporfirina y de tres de sus complejos metálicos, preparados por reacción con sales de Ni(II), Cu(II) y Zn(II), mediante procedimientos sintéticos enmarcados en la llamada “Química Verde”
Sandra Rodríguez-Álvarez   +2 more
doaj  

EPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge Caracterização espectroscópica (RPE e DRIFT) das frações húmicas durante a compostagem de lodo de fábrica de papel e serragem

open access: yesPesquisa Florestal Brasileira, 2012
<p>The spectroscopic characteristics (DRIFT, UV-visible and EPR) of humic fractions were studied during composting of sawdust and paper mill sludge.
Claudia Maria Branco de Freitas Maia   +3 more
doaj   +1 more source

Síntese de porfirinas C-Alditol e C-Glicosídeo meso-substituídas [PDF]

open access: yes, 2015
Orientador : Prof. Dr. Alan Guilherme GonçalvesCoorientadora : Profª. Drª. Sandra Mara BarreiraTese (doutorado) - Universidade Federal do Paraná, Setor de Ciências da Saúde, Programa de Pós-Graduação em Ciências Farmacêuticas.
Ló, Stephanie Melissa Siu, 1985-   +1 more
core  

Normalne vrijednosti porfirina u urinu

open access: yesArhiv za higijenu rada i toksikologiju, 1959
A brief review is given of the metabolism of porphyrin, the release and ratio of isomers in urine, and literature data on normal values and the causes of their variability. The analysis of coproporphyrin in urine is made in 150 healthy persons (75 men and 75 women). Higher values are observed in men. This difference is statistically insignificant.
Đurić, D., Belamarić, T.
openaire   +1 more source

Híbridos de porfirinas e óxido de grafeno para aplicações biológicas [PDF]

open access: yes, 2018
Non-covalent hybrids between cationic porphyrins and graphene oxide (GO) have been acquiring an increasing importance in several biological applications due to their individual properties.
Monteiro, Ana Rita Rodrigues Vilares Cabral
core  

Influence of ceramide 2 on in vitro skin permeation and retention of 5-ALA and its ester derivatives, for Photodynamic Therapy

open access: yesBrazilian Journal of Pharmaceutical Sciences, 2009
Photodynamic therapy (PDT) based on topical 5-aminolevulinic acid (5-ALA), an endogenous precursor of protoporphyrin, is an interesting approach for the treatment of skin cancer.
Maria Bernadete Riemma Pierre   +2 more
doaj   +1 more source

Production, quality control, biodistribution assessment and preliminary dose evaluation of [177Lu]-tetra phenyl porphyrin complex as a possible therapeutic agent

open access: yesBrazilian Journal of Pharmaceutical Sciences, 2015
Due to interesting therapeutic properties of 177Lu and tumor avidity of tetraphenyl porphyrins (TPPs), 177Lu-tetraphenyl porphyrin was developed as a possible therapeutic compound.
Samaneh Zolghadri   +3 more
doaj   +1 more source

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