Results 41 to 50 of about 1,987 (209)

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

Immediate response of soil nitrogen cycling‐related enzyme activities to typhoon disturbance along a gap size gradient

Ecosphere, Volume 17, Issue 6, June 2026.
Abstract Although heavy rainfall and the input of unsenescent litter produced by tropical cyclones can profoundly affect the activities of soil nitrogen (N) cycling‐related enzymes in coastal mountain forest ecosystems in the short term, the immediate responses of these enzymes to typhoon disturbances and the underlying mechanism remain unknown.
Rui Cao, Naiyue Lv, Jiashun Luo, Haipeng Lin, Yutong Chen, Qingjun Ma, Zhihui Wang, Zhuang Wang, Lifeng Wang, Qin Wang, Xuebiao Pan, Wanqin Yang   +11 more
wiley   +1 more source

Detection of Perchlorate in Swabs Using Linear Sweep Voltammetry at a Liquid–Liquid Microinterface Array

Analysis &Sensing, Volume 6, Issue 3, May 2026.
Perchlorate is a potential environmental contaminant and ease of its detection is needed to support environmental monitoring. Current detection methods mainly involve chromatographic and mass spectrometric methods, which have limitations in terms of portability and cost.
Celine P. A. Otiob, Hum B. Lamichhane, Xiaoqing Lv, Lauren N. Gilson, Philip W. Bateman, Damien W. M. Arrigan   +5 more
wiley   +1 more source

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  

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

Microtitrimetric determination of a drug content of pharmaceuticals containing olanzapine in non-aqueous medium [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2009
Two simple, rapid, reliable and cost-effective methods based on titrimetry in non-aqueous medium are described for the determination of olanzapine in pharmaceuticals.
KANAKAPURA BASAVAIAH, NAGARAJU RAJENDRAPRASAD, KANAKAPURA BASAVAIAH VINAY   +2 more
doaj  

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

High Precision Titrimetry, Ion Chromatography and ICP-Optical Emission Spectrometry for the Estimation of Inhomogeneities in Aqueous Calibration Solutions for Metrological Purposes [PDF]

, 2018
.: The homogeneity of samples intended for metrological intercomparison studies must be granted without ambiguity. This holds equally true for aqueous solutions for which the determination of between-bottle variations requires measurement techniques with
Wüthrich, Jürg, Weber, Michael, Rezzonico, Sergio   +2 more
core  

Potassium bromate assay by redox titrimetry using arsenic trioxide

, 2003
Bromate, a disinfectant, is one of the analytes of interest in wastewater analysis. Environmental laboratories have a regulatory need for their measurements to be traceable to NIST standards.
Smeller, J.M.; Leigh, S.D.
core   +1 more source

Safety of UV‐treated oil from yellow mealworm (Tenebrio molitor larvae) as a novel food pursuant to Regulation (EU) 2015/2283

EFSA Journal, Volume 23, Issue 11, November 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 UV‐treated oil from yellow mealworm (Tenebrio molitor larvae) as a novel food (NF) pursuant to Regulation (EU) 2015/2283. The NF is produced from farmed T.
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, Francesco Cubadda, Thomas Frenzel, Marina Heinonen, Francesca Marcon, Harry J. McArdle, Peter Moldeus, Monika Neuhäuser‐Berthold, Josef Rudolf Schlatter, Morten Poulsen, Miguel Prieto Maradona, Alexandros Siskos, Henk van Loveren, Vânia Mendes, Ermolaos Ververis, Karen Ildico Hirsch‐Ernst   +30 more
wiley   +1 more source