Results 41 to 50 of about 3,685 (185)

Xantenes and porphyrins, photoactivatable molecules used to control insect pests [PDF]

open access: yes, 2011
Se analizaron dos sensibilizadores fotodinámicos, la Floxina B y la Hematoporfirina IX, como fotoinsecticidas de moscas plagas. Ambas sustancias adicionadas al alimento de las larvas presentaron alta toxicidad.
Bochicchio, Pablo Alejandro   +2 more
core  

Photodynamic therapy in dermatology: basic principles [PDF]

open access: yes, 2009
A terapia fotodinâmica envolve a administração de uma droga fotossensibilizante e sua ativação subsequente pela luz de comprimento de onda correspondente ao espectro de absorção do fotossensibilizador. Atualmente, a terapia fotodinâmica tópica é aprovada
FESTA NETO, Cyro   +2 more
core   +2 more sources

Evolución del metabolismo: desde las porfirinas hacia la fotosíntesis [PDF]

open access: yes, 2009
Las rutas metabólicas son series de reacciones bioquímicas sucesivas catalizadas por enzimas que en su conjunto constituyen un proceso de extraordinaria complejidad que llamamos metabolismo celular.
Pérez-Urria Carril, Elena
core   +1 more source

Transformações químicas da matéria orgânica durante a compostagem de resíduos na indústria madeireira. [PDF]

open access: yes, 2015
CHEMICAL TRANSFORMATIONS OF ORGANIC MATTER DURING THE COMPOSTING OF WOOD INDUSTRY WASTES (RESIDUES). Composting of sawdust and paper mill sludge, using a “Kneer” process reactor, was studied in an attempt to elaborate upon organic matter (OM ...
BUDZIAK, C. R.   +2 more
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

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

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

Corantes naturais: uma alternativa aos indicadores de pH “convencionais” [PDF]

open access: yes, 2011
Descrece-se a obtenção de extractos de diferentes vegetais, plantas e frutos e estabelece-se, para cada um, a respectiva escala de pH.Fundação para a Ciência e ...
Esteves, Ana Paula   +1 more
core  

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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