Hydroxyl Emission
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Enhancement of Visible Light-Responsive Photocatalytic Efficiency by Using a Laccaic Acid-Modified Titanium Dioxide Photocatalyst
In this study, a laccaic acid-modified TiO2 photocatalyst (Lac-TiO2) was prepared via an impregnation method with 0.50, 1.00, 2.50, and 5.00 wt.% laccaic acid. The products’ physical properties were examined through X-ray powder diffraction (XRD), field emission scanning electron microscopy (FE-SEM), X-ray photoemission spectroscopy (XPS), UV-Vis diffused
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Chemical composition and radical scavenging activity of melanin from Auricularia auricula fruiting bodies
Melanin extracted from Auricularia auricula fruiting bodies (AAFB) was examined by element analyzer, amino acid analyzer, inductively coupled plasma-optical emission spectrometry. Elemental composition analysis revealed that main component of AAFB melanin was pheomelanin. Amino acid analysis showed that 16 amino acids were found in AAFB melanin and total ami
Food Sci. Technol. Publicado em: 2015-04
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3. Correlação entre a produção gasosa de água, hidroxila, monóxido de carbono e a magnitude heliocêntrica do Cometa C/1995 O1 (Hale-Bopp) / Correlation between the gas production of water, hydroxyl, carbon monoxide and the heliocentric magnitude of the Comet C/1995 O1 (Hale-Bopp)
The purpose of the present work is to study the correlation between the gas production rates and heliocentric magnitudes of comet C/1995 O1 (Hale-Bopp), in the pre-perihelion phase as well as in the post-perihelion phase. The evolutions of magnitudes and gas production rates of H2O (water), OH (hydroxil radical) and CO (carbon monoxide), along the approach t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/05/2011
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4. Solubility improvement of an anthelmintic benzimidazole carbamate by association with dendrimers
The improvement of aqueous solubility of methyl (5-[propylthio]-1H-benzimidazol-2-yl) carbamate, albendazole (ABZ) using polyamidoamine (PAMAM) dendrimers as solubility enhancers was investigated. Full generation PAMAM dendrimers with amine terminal groups, (G3), with hydroxyl terminal groups (G3OH) and half generation PAMAM dendrimers with carboxylate termi
Brazilian Journal of Chemical Engineering. Publicado em: 2011-12
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5. Simulataneous temperature measurements of the upper mesosphere obtained lidar and airglow in the Brazilian low latitude sector / Medidas simultâneas de temperatura na mesosfera superior através de radar de laser e luminescência atmosférica em baixas latitudes no setor brasileiro
We present temperature measurements of the upper mesosphere obtained by lidar and airglow in the low latitude Brazilian sector over a period of two years. In the 80-110 km region, free sodium atoms are abundant enough to allow probing of the Doppler broadened hyperfine structure of the D2 resonance transition by ground-based lidar. The lidar technique consis
Publicado em: 2009
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6. Estudo de ondas de gravidade através da aeroluminescência das moléculas O2(0,1) e OH(6,2) / Study of atmospheric gravity waves via airglow of O2 (0,1) and OH (6,2) molecules
A study of intensity and temperature variabilities of airglow layers caused by gravity wave perturbations was a main subject of this work. The Krassovsky n parameter, defined as n = |n|e-i(I), was used to investigate the amplitude and phase of periodic variations of the molecular oxygen (O2(0,1)) and hydroxyl (OH(6,2)) emissions during the night. The data se
Publicado em: 2007
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7. Observação da temperatura rotacional da hidroxila através da aeroluminescência na região da mesosfera terrestre / Airglow observations of the hydroxil s rotacional temperature at the terrestrial mesospheric region
O Laboratório de Luminescência Atmosférica (LUME) do Instituto Nacional de Pesquisas Espaciais (INPE) desenvolveu um fotômetro portátil com filtro de interferência inclinável para medir a aeroluminescência terrestre da hidroxila, banda OH(8,3). Um programa de computador foi desenvolvido para controlar o funcionamento do equipamento e realizar a aquis
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2000
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8. Airglow observations of the hydroxil s rotacional temperature at the terrestrial mesospheric region / Observação da temperatura rotacional da hidroxila através da aeroluminescência na região da mesosfera terrestre
The Atmospheric Airglow Laboratory (LUME)of National Institute for Space Research (INPE)developed a portable photometer with a tilting filter to measure the OH(8,3)band airglow. A computer program was developed to control the photometer operation and to accomplish the acquisition and reduction of the data. Photometer sensitivity and spectral calibrations wer
Publicado em: 2000
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9. Observação da temperatura rotacional da hidroxila através da aeroluminescência na região da mesosfera terrestre / Airglow observations of the hydroxil s rotacional temperature at the terrestrial mesospheric region
O Laboratório de Luminescência Atmosférica (LUME) do Instituto Nacional de Pesquisas Espaciais (INPE) desenvolveu um fotômetro portátil com filtro de interferência inclinável para medir a aeroluminescência terrestre da hidroxila, banda OH(8,3). Um programa de computador foi desenvolvido para controlar o funcionamento do equipamento e realizar a aquis
Publicado em: 2000
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10. Aplicação da microscopia otica de fluorescencia ao estudo de polimeros e blendas polimericas de PVA/PVAc
A morphological study of polymer blends of 87-89% hydrolized PVA (124.000-186.000) and PVAc (high molecular weight) has been made using the relative compositions 9:1, 1:1 and 1:9, containing fluorescein (0,1% m/m). The formation of two phases, from a process of liquid-solid phase separation has been observed during the solvent(ethanol/water) evaporation The
Publicado em: 1994
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11. The origin of the chemiluminescence of phagocytosing granulocytes.
Granulocytes engaged in the phagocytosis of opsonized zymosan emit light by a process that is inhibited by superoxide dismutase and catalase. In the present report is is shown that light emission is the result of reactions between certain unspecified constituents of the ingested particles and some or all of the oxidizing agents (H2O2, O2),and possibly the hy
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12. Floral scent production in Clarkia breweri (Onagraceae). II. Localization and developmental modulation of the enzyme S-adenosyl-L-methionine:(iso)eugenol O-methyltransferase and phenylpropanoid emission.
We have previously shown (R.A. Raguso, E. Pichersky [1995] Plant Syst Evol 194: 55-67) that the strong, sweet fragrance of Clarkia breweri (Onagraceae), an annual plant native to California, consists of 8 to 12 volatile compounds, including 4 phenylpropanoids. Although some C. breweri plants emit all 4 phenylpropanoids (eugenol, isoeugenol, methyleugenol, an