Results 21 to 30 of about 348 (101)

Do-it-yourself methodology for calorimeter construction based in Arduino data acquisition device for introductory chemical laboratories

Heliyon, 2020
Many experimental thermochemical laboratories require monitoring temperatures during a reaction or physical procedure. Nowadays, there are many alternatives to fulfill this requirement; however, they are expensive for basic scholars and first-year ...
William Vallejo, Carlos Diaz-Uribe, Catalina Fajardo   +2 more
doaj   +1 more source

Eficiencia fotoquímica y crecimiento de chile poblano inoculados con rizobacteria y hongos micorrízicos arbusculares

Ecosistemas y Recursos Agropecuarios, 2023
Los hongos micorrízicos arbusculares (HMA) y las bacterias promotoras del crecimiento vegetal (BPCV) se asocian simbióticamente y de forma natural con las plantas de chile poblano.
Juan José Almaraz-Suárez, Ronald Ferrera-Cerrato, Apolinar González-Mancilla, Rigoberto González- Mancillas, Ignacio Orona-Castillo, Ulises Noel Gutiérrez- Guzmán, Pablo Preciado-Rangel   +6 more
doaj   +1 more source

Trocas gasosas, pigmentos fotossintéticos e eficiência fotoquímica do gergelim sob estresse salino e adubação fosfatada

Semina: Ciências Agrárias, 2022
O estresse salino constitui ameaça à agricultura irrigada, sobretudo em regiões semiáridas, pois pode causar danos irreversíveis ao aparato fotossintético em qualquer estágio de desenvolvimento da planta, com redução na biossíntese de clorofila, o que ...
Adaan Sudario Dias, Geovani Soares de Lima, Saulo Soares da Silva, Lauriane Almeida dos Anjos Soares, Lúcia Helena Garofalo Chaves, Hans Raj Gheyi, Cassiano Nogueira de Lacerda, Pedro Dantas Fernandes   +7 more
doaj   +1 more source

Cyanobacterial Biomass Pigments as Natural Sensitizer for TiO2 Thin Films

International Journal of Photoenergy, Volume 2019, Issue 1, 2019., 2019
In this work, we studied the effect of TiO2 sensitization with dry biomass extracted of cyanobacteria on the degradation of methylene blue dye (AM). Cyanobacterial cultures isolated from water samples were collected from the swamp of Malambo in Colombia; two main genera of cyanobacteria were identified, and they were cultivated with BG‐11 culture ...
Karen Patiño-Camelo, Carlos Diaz-Uribe, Euler Gallego-Cartagena, William Vallejo, Vincent Martinez, Cesar Quiñones, Mikel Hurtado, E. Schott, Zofia Stasicka   +8 more
wiley   +1 more source

Respostas fisiológicas de plantas jovens de macaúba a condições de seca cíclica

Pesquisa Florestal Brasileira, 2016
O objetivo do presente estudo foi avaliar os impactos de três ciclos de seca/ reirrigação sobre os rendimentos quânticos da fluorescência da clorofila a, acúmulo de prolina e ajustamento osmótico.
Clenilso Sehnen Mota, Marco Antonio Oliva Cano   +1 more
doaj   +1 more source

Synthesis and Characterization of System In(O,OH)S/i‐ZnO/n+‐ZnO

Advances in Physical Chemistry, Volume 2017, Issue 1, 2017., 2017
In this work, we fabricated system In(O,OH)S/i‐ZnO/n+‐ZnO to be used as potential optical window in thin films solar cells. i‐ZnO/n+‐ZnO thin films were synthesized by reactive evaporation (RE) method and In(O,OH)S thin films were synthesized by chemical bath deposition (CBD) method; all thin films were deposited on soda lime glass substrates.
William Vallejo, Carlos Diaz-Uribe, G. Gordillo, Ali Eftekhari   +3 more
wiley   +1 more source

Methylene Blue Photocatalytic Degradation under Visible Irradiation on In2S3 Synthesized by Chemical Bath Deposition

Advances in Physical Chemistry, Volume 2017, Issue 1, 2017., 2017
In this work, we synthesized In2S3 powder through chemical bath deposition method (CBD) in acid medium; we used thioacetamide as sulphide source and InCl3 as indium ion source. X‐ray diffraction, diffuse reflection, and Raman spectroscopy measurements were used for In2S3 powder physicochemical characterization. Optical analysis indicated that In2S3 was
William Vallejo, Carlos Díaz-Uribe, Kathy Rios, Leonardo Palmisano   +3 more
wiley   +1 more source

Environmental toxicity of effluents of different laboratories of a compounding pharmacy

Revista Ambiente & Água, 2016
There is a growing concern over so-called "emerging pollutants" in the production of pharmaceuticals. These pollutants reach the environment from household waste or from leftovers generated during production.
Luciano Henrique Pinto, Gilberto Cardozo, Julia Carolina Soares, Gilmar Sidnei Erzinger   +3 more
doaj   +1 more source

Effect of Calcination Temperature on Structural Properties and Photocatalytic Activity of Ceria Nanoparticles Synthesized Employing Chitosan as Template

Journal of Nanomaterials, Volume 2013, Issue 1, 2013., 2013
Ceria nanoparticles were synthesized employing chitosan as template and thermal treatment at different temperatures (350, 650, and 960°C). The effect of calcination temperature on structural properties and photocatalytic activity of ceria nanopowder was also tested.
Angela B. Sifontes, Maibelin Rosales, Franklin J. Méndez, Olycen Oviedo, Tamara Zoltan, Suprakas Sinha Ray   +5 more
wiley   +1 more source

Infuence of Microstructure in Drug Release Behavior of Silica Nanocapsules

Journal of Drug Delivery, Volume 2013, Issue 1, 2013., 2013
Meso‐ and nanoporous structures are adequate matrices for controlled drug delivery systems, due to their large surface areas and to their bioactive and biocompatibility properties. Mesoporous materials of type SBA‐15, synthesized under different pH conditions, and zeolite beta were studied in order to compare the different intrinsic morphological ...
Gema Gonzalez, Amaya Sagarzazu, Tamara Zoltan, Ali Nokhodchi   +3 more
wiley   +1 more source