Results 51 to 60 of about 3,145,620 (290)

Paracetamol extraction tablets: a green technique for teaching of pharmaceutical chemistry

Revista Brasileira de Ensino de Ciência e Tecnologia, 2020
This work presents the evaluation of the chemical vegetable for the extraction of the active ingredient of paracetamol 500 mg tablets, with optimization of the process through the holistic metrics of Green Chemistry. The previous analysis, indicated as a
Juliana Aparecida Bolzan, Sandra Inês Adams Angnes Gomes, Marilei Casturina Mendes Sandri   +2 more
doaj   +1 more source

Learning about Pesticide Use Adapted from Ethnoscience as a Contribution to Green and Sustainable Chemistry Education

Education Sciences, 2022
This study shows how students can learn about green and sustainable chemistry by using the knowledge perspective of a local indigenous culture as a starting point.
Robby Zidny, Ingo Eilks
doaj   +1 more source

Optimization and characterization of silver nanoparticle-modified luffa for the adsorption of ketoprofen and reactive yellow 15 from aqueous solutions

Scientific Reports
In the current work, luffa was modified with silver nanoparticles to prepare LF/AgNPs adsorbent for the elimination of ketoprofen and reactive yellow 15 (RY15) from aqueous media.
Soheil Tavassoli, Setareh Cheraghi, Pardis Etemadifar, Afsaneh Mollahosseini, Shirin joodaki, Niloofar Sedighi   +5 more
doaj   +1 more source

Luffa–Ni/Al layered double hydroxide bio-nanocomposite for efficient ibuprofen removal from aqueous solution: Kinetic, equilibrium, thermodynamic studies and GEP modeling

Heliyon
Luffa is a robust, renewable biomaterial known for its low mass, high specific strength, and non-toxicity, making it ideal for composite development.
Soheil Tavassoli, Afsaneh Mollahosseini, Saeed Damiri, Mehrshad Samadi   +3 more
doaj   +1 more source

Extracting and re-using research data from chemistry e-theses: the SPECTRa-T project [PDF]

, 2008
Scientific e-theses are data-rich resources, but much of the information they contain is not readily accessible. For chemistry, the SPECTRa-T project has addressed this problem by developing data-mining techniques to extract experimental data, creating ...
Downing, Jim, Harvey, Matt, Morgan, Peter, Murray-Rust, Peter, Rzepa, Henry S, Stewart, Diana, Tonge, Alan, Townsend, Joseph A   +7 more
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Validation of a multi-residue method to determine deltamethrin and alpha-cypermethrin in mosquito nets by gas chromatography with electron capture detection (GC-µECD) [PDF]

, 2013
Background: Nowadays long-lasting insecticidal mosquito nets (LNs) are frequently used around the world to protect people against malaria vectors. As they contain insecticide, laboratory control is needed to check whether the content of the active ...
Ouattara, Jean Pierre Nabléni, Pigeon, Olivier, Spanoghe, Pieter   +2 more
core   +2 more sources

Genotoxic effect of heavy metals on Astyanax lacustris in an urban stream

Heliyon, 2020
Uncontrolled urbanization growth contributes to the pollution of aquatic environments. Heavy metals released by domestic and industrial effluents can negatively affect aquatic organisms. This study aimed to evaluate the effect of environmental pollutants,
Emanoelle Pereira da Silva, Marcelino Benvindo-Souza, Carlos Filipe Camilo Cotrim, Andreya Gonçalves Costa Motta, Matheus Mendonça Lucena, Nelson Roberto Antoniosi Filho, Julião Pereira, Klebber Teodomiro Martins Formiga, Daniela Melo e Silva   +8 more
doaj   +1 more source

Identification of groundwater conditions in the recharge zone of regionally extended aquifer system with use of water chemistry and isotopes (Lwowek region, Poland)

Journal of Hydrology: Regional Studies, 2021
Study region: The studied recharge zone of regionally extended Quaternary aquifers - Lwówek region (Wielkpolska, Poland) is located in a region where Quaternary aquifers are the principal source of drinking water.
Krzysztof Dragon
doaj   +1 more source

Screening the effect of four ultrasound-assisted extraction parameters on hesperidin and phenolic acid content of aqueous citrus pomace extracts [PDF]

, 2018
Polyphenols of citrus by-products, due to their antioxidant and antimicrobial activities, could be valorized by pharmaceutical and food industries, adding a value to the citrus processing companies.
Bowyer, Michael C., Golding, John B., Papoutsis, Konstantinos, Pristijono, Penta, Scarlett, Christopher J., Stathopoulos, Costas E., Vuong, Quan V.   +6 more
core   +2 more sources

Brewing of filter coffee [PDF]

, 2012
We report progress on mathematical modelling of coffee grounds in a drip filter coffee machine. The report focuses on the evolution of the shape of the bed of coffee grounds during extraction with some work also carried out on the chemistry of extraction.
Booth, C., Cummins, C., Dalwadi, M., Dellar, P., Devereux, M., Dewynne, J., Donohue, J., Duncan, A., Fitzmaurice, F., Gordon, A., Hennessy, M., Hickey, C., Hinch, J., Hjorth, P., Kyrke-Smith, T., Leahy, D., Lee, W., Lynch, E., Mercier, O., Miklavcic, S., Russell, S., Schwartz, L., Shozi, B.F., Swierczynski, P., Timoney, C., Tomczyk, J., Warneford, E.   +26 more
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