Results 31 to 40 of about 485,845 (302)

Porous silica spheres as indoor air pollutant scavengers [PDF]

, 2010
Porous silica spheres were investigated for their effectiveness in removing typical indoor air pollutants, such as aromatic and carbonyl-containing volatile organic compounds (VOCs), and compared to the commercially available polymer styrene ...
Delaney, Paul, Gibson, Lorraine, Hanrahan, John P., Healy, Robert, Holmes, Justin D., Morris, Michael A., Wenger, John C.   +6 more
core   +2 more sources

Determination of Polar Compounds in Guava Leaves Infusions and Ultrasound Aqueous Extract by HPLC-ESI-MS

Journal of Chemistry, 2015
Literature lacks publications about polar compounds content in infusion or guava leaves tea. Because of that, a comparison between different times of infusion and a conventional ultrasound aqueous extract was carried out.
Elixabet Díaz-de-Cerio, Vito Verardo, Ana María Gómez-Caravaca, Alberto Fernández-Gutiérrez, Antonio Segura-Carretero   +4 more
doaj   +1 more source

Performance of polyunsaturated oils during frying of potatoes in fast food shops: Formation of new compounds and correlations between analytical methods.

Grasas y Aceites, 1997
In this study, different analytical methods, i.e. polar compounds, polar compound distribution, free fatty acids, peroxide value, conjugated dienes and trienes, oxidized fatty acids, viscosity and oxifrit-test, are applied to samples of both initial ...
L. Masson, P. Robert, N. Romero, M. Izaurieta, S. Valenzuela, J. Ortiz, M. C. Dobarganes   +6 more
doaj   +1 more source

Quality control of used frying fats. Validity of quick tests to substitute polar compound determination

Grasas y Aceites, 1995
In this paper, substitution of polar compound quantitation by quick tests for discarding used frying fats according to official regulation, is evaluated.
M. C. Dobarganes, G. Márquez-Ruiz
doaj   +1 more source

Echinacea purpurea (L.) Moench: Chemical Characterization and Bioactivity of Its Extracts and Fractions

Pharmaceuticals, 2020
Echinacea purpurea (L.) Moench is widely known for its medicinal properties, being one of the most used medicinal plants for its immunostimulant properties. Nevertheless, there is still scarce information on its cytotoxic activity.
Joana Coelho, Lillian Barros, Maria Inês Dias, Tiane C. Finimundy, Joana S. Amaral, Maria José Alves, Ricardo C. Calhelha, P. F. Santos, Isabel C.F.R. Ferreira   +8 more
doaj   +1 more source

Band-gap engineering in AB(O$_x$S$_{1-x}$)$_{3}$ perovskite oxysulfides: A route to strongly polar materials for photocatalytic water splitting [PDF]

, 2019
Polar heterogeneous photocatalysts were shown to lead to enhanced charge-carrier separation that results in superior activity for example for photocatalytic water splitting.
Aschauer, Ulrich, Vonrüti, Nathalie
core   +2 more sources

Thermal Behavior Improvement of Fortified Commercial Avocado (Persea americana Mill.) Oil with Maqui (Aristotelia chilensis) Leaf Extracts

Antioxidants, 2021
Avocado oil is considered a highly prized food due to its nutritional contribution. On the other hand, Aristotelia chilensis (Molina) Stuntz (Elaeocarpaceae), common name “maqui”, is an endemic fruit in Chile, well known for its exceptional antioxidant ...
Marcos Flores, Luis Reyes-García, Jaime Ortiz-Viedma, Nalda Romero, Yesica Vilcanqui, Cristian Rogel, Javier Echeverría, Oscar Forero-Doria   +7 more
doaj   +1 more source

Evaluation of Retention Mechanisms of Polar Compounds on Polar Stationary Phases Based on Type C Silica

Separations
Polar compounds can be separated on polar stationary phases attached on the surface of silica hydride (Type C silica). Although aqueous normal phase (ANP) chromatography has been used to denote this mode of separation, there have been no detailed studies
Minzhu Zou, Yong Guo
doaj   +1 more source

Model for the hydration of non-polar compounds and polymers

, 2002
We introduce an exactly solvable statistical-mechanical model of the hydration of non-polar compounds, based on grouping water molecules in clusters where hydrogen bonds and isotropic interactions occur; interactions between clusters are neglected ...
A. Ben-Naim, A. Hansen, A.B. Kolomeisky, A.V. Gorelov, B. Lee, C. Wu, E.E. Gurel, E.I. Tiktopulo, G. Graziano, G.I. Makhatadze, G.M. Bell, G.T. Barkema, J. Douglas, J.W. Arthur, J.W. Arthur, K.A. Dill, K.A.T. Silverstein, K.A.T. Silverstein, Lapo Casetti, N. Matubayasi, N. Muller, P. Bruscolini, P. De Los Rios, P. De Los Rios, Pierpaolo Bruscolini, R. Crovetto, S. Fujishige, T. E. Creighton, X. Wang, Y. Tamai, Y. Tamai   +30 more
core   +1 more source

Acantholippia salsoloides : Phytochemical Composition and Biological Potential of a Thujonic Population [PDF]

, 2019
Acantholippia salsoloides (Verbenaceae) is an aromatic plant widespread in the Andean region. The infusion (leaves and flowers) is widely used as a digestive stimulant as well as for the treatment of various diseases in traditional medicine.
Celaya, Liliana Soledad, Silva, Luís R., Viturro, Carmen Ines   +2 more
core   +1 more source