Results 41 to 50 of about 4,436 (242)

Non-aqueous titrimetric assay of gabapentin in capsules using perchloric acid as titrant [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2011
Two simple, rapid, accurate and inexpensive methods using visual and potentiometric titrimetric techniques are described for the determination of gabapentin (GBP) in bulk drug as well as in capsules.
SAMEER A.M. ABDULRAHMAN, KANAKAPURA BASAVAIAH   +1 more
doaj  

Titrimetric methods for determining cationic surfactants

Журнал органічної та фармацевтичної хімії, 2022
Aim. To generalize and systematize information on titrimetric methods for determining quaternary ammonium compounds (QACs). Results and discussion.
Mykola Ye. Blazheyevskіy, Ewa J. Bulska, Andrii M. Tupys, Olena V. Koval’ska   +3 more
doaj   +1 more source

Drying Kinetics and Quality Assessment of Lemon Peel Using Convective and Infrared Methods

Journal of Food Process Engineering, Volume 49, Issue 3, March 2026.
This study compares convective and infrared drying of lemon peel and highlights their effects on key bioactive compounds. Infrared drying better preserves polyphenols, flavonoids, and proteins, as confirmed by FTIR analysis, supporting its suitability for high‐quality dried lemon products.
Douja Sellami, Houda Hachem, Sami Kooli, Leila Selmani, Daoued Mihoubi   +4 more
wiley   +1 more source

Concept of Recycling‐on‐Demand Investigated on Linear Poly(Ester‐Co‐Acetal)s

Macromolecular Materials and Engineering, Volume 311, Issue 1, January 2026.
Recycling‐on‐demand (ROD) of polymers into valuable oligomeric building blocks introduces an important step toward a circular economy. Here, poly(ester‐co‐acetal)s (PEAs) serve as a representative model system demonstrating a full proof of concept for the proposed ROD procedure, where the original oligoester is fully retained after degradation and ...
Florian Cramer, Pauline Shamraienko, Brigitte Voit   +2 more
wiley   +1 more source

Ion Analysis at the Highest Stage - The Metrological Approach by National Metrological Institutes [PDF]

, 2018
.: National Metrological Institutes (NMI's) from fifteen different countries participated in interlaboratory comparisons where concentrations of about 1 g kg−1 in solutions of aluminium, copper, iron, magnesium, chloride and phosphate were measured.
Felber, Helene, Weber, Michael
core  

Catalase-based modified graphite electrode for hydrogen peroxide detection in different beverages [PDF]

, 2016
A catalase-based (NAF/MWCNTs) nanocomposite film modified glassy carbon electrode for hydrogen peroxide (H2O2) detection was developed. The developed biosensor was characterized in terms of its bioelectrochemical properties.
ANTIOCHIA, RICCARDA, BOLLELLA, PAOLO, FAVERO, Gabriele, FUSCO, GIOVANNI, MAZZEI, Franco, TORTOLINI, CRISTINA   +5 more
core   +4 more sources

Equivalence assessment of quantitative tannins determination methods, used for analysis of herbal drugs

Регуляторные исследования и экспертиза лекарственных средств, 2018
The article describes results of comparative evaluation of two pharmacopoeial methods used for quantitative determination of tannins in herbal drugs: the titrimetric method of the State Pharmacopoeia of the USSR (XIth edition) that is described in the ...
N. P. Antonova, A. M. Kalinin, S. S. Prohvatilova, E. P. Shefer, T. E. Matveenkova   +4 more
doaj  

Methods of quantitative determination of Sparteine hydroiodine

Aktualʹnì Pitannâ Farmacevtičnoï ì Medičnoï Nauki ta Praktiki, 2015
Currently, there are many different methods of quantitative determination of alkaloid Sparteine amounts such as gravimetry, acidimetry, argentometry (including the use of ion-selective electrode), iodometry, extraction photometry, colorimetry ...
M. E. Blazheyevskyy, М. М. Kucher, V. V. Dyadchenko, I. O. Yurchenko   +3 more
doaj   +1 more source

Greenhouse Gas Emissions From a Large and Shallow Tropical African Lake: Contribution of Different Gases and Emission Pathways

Journal of Geophysical Research: Biogeosciences, Volume 130, Issue 10, October 2025.
Abstract Globally, nutrient enriched water bodies are major contributors to the aquatic greenhouse gases (GHG) efflux to atmosphere. However, few efforts have focused on assessing the contribution from coastal transitional ecosystems in Africa. To improve our knowledge of these systems, we investigated emissions in Lake Nokoué, a coastal lagoon in ...
S. K. d. L. Ague, K. Rinke, D. Mama, M. Koschorreck   +3 more
wiley   +1 more source

Safety of rapeseed protein–fibre concentrate as a novel food pursuant to Regulation (EU) 2015/2283

EFSA Journal, Volume 23, Issue 9, September 2025.
Abstract Following a request from the European Commission, the EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA) was asked to deliver an opinion on the safety of rapeseed protein‐fibre concentrate as a novel food (NF) pursuant to Regulation (EU) 2015/2283.
EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA), Dominique Turck, Torsten Bohn, Montaña Cámara, Jacqueline Castenmiller, Stefaan De Henauw, Ángeles Jos, Alexandre Maciuk, Inge Mangelsdorf, Breige McNulty, Androniki Naska, Kristina Pentieva, Alfonso Siani, Frank Thies, Margarita Aguilera‐Gómez, Thomas Frenzel, Harry J. McArdle, Peter Moldeus, Monika Neuhäuser‐Berthold, Morten Poulsen, Miguel Prieto Maradona, Josef Rudolf Schlatter, Henk van Loveren, Marcello Laganaro, Emanuela Turla, Anna‐Maria Pieger, Karen Ildico Hirsch‐Ernst   +27 more
wiley   +1 more source