Results 21 to 30 of about 51,776 (235)

Stir Bar Sorptive Extraction of Volatile Compounds in Vinegar: Validation Study and Comparison With Solid Phase Microextraction [PDF]

open access: yes, 2007
Stir bar sorptive extraction was evaluated for analysing volatiles in vinegar. The procedure developed shows detection and quantitation limits, and linear ranges adequate for analysing this type of compounds. The accuracy obtained was close to 100%, with
Alves   +25 more
core   +2 more sources

α-AMYLASE, α-GLUCOSIDASE AND LIPASE INHIBITORY PROPERTIES AND PHYTOCHEMICAL ANALYSIS OF ENDEMIC PLANT Jurinea brevicaulis Boiss.

open access: yesTrakya University Journal of Natural Sciences, 2023
Obesity, defined as New World Syndrome, causes global health problems and big economic losses. Natural products have gained increasing importance because of their antiobesity potency. The genus Jurinea Cass.
Nevin Ulaş Çolak   +6 more
doaj   +1 more source

Chemical derivatization processes applied to amine determination in samples of different matrix composition [PDF]

open access: yes, 2015
No abstract ...
Biziuk, Marek   +3 more
core   +1 more source

Volatile components of different periods and different parts of Dendrobium chrysotoxum based on GC-MS

open access: yesGuangxi Zhiwu
In order to investigate the characteristics and release pattern of volatile components during flowering of Dendrobium chrysotoxum. In this study, solid-phase microextraction(SPME)combined with GC-MS was used to detect the volatile components of D ...
ZHAO Ruijing1,2, CAO Hua2, LU Lin2, LI Limei3, SHEN Dingcai3, LI Han2*, LI Donghui1*
doaj   +1 more source

SPME/GC-MS characterization of volatile compounds of Chinese traditional-chopped pepper during fermentation

open access: yesInternational Journal of Food Properties, 2019
Fermented-chopped pepper is a traditional-fermented vegetable in China. Chopped pepper is generally made with pepper, garlic, and ginger. In present study, the volatile compounds, obtained from chopped peppers during spontaneous fermentation, were ...
Jingjing Wang   +5 more
doaj   +1 more source

Comparison of different approaches for direct coupling of solid-phase microextraction to mass spectrometry for drugs of abuse analysis in plasma

open access: yesJournal of Pharmaceutical Analysis, 2023
The direct coupling of solid-phase microextraction (SPME) to mass spectrometry (MS) (SPME-MS) has proven to be an effective method for the fast screening and quantitative analysis of compounds in complex matrices such as blood and plasma. In recent years,
Wei Zhou   +3 more
doaj   +1 more source

Exploring the Single-Particle Mobility Edge in a One-Dimensional Quasiperiodic Optical Lattice

open access: yes, 2017
A single-particle mobility edge (SPME) marks a critical energy separating extended from localized states in a quantum system. In one-dimensional systems with uncorrelated disorder, a SPME cannot exist, since all single-particle states localize for ...
Bloch, Immanuel   +7 more
core   +1 more source

Control-oriented implementation and model order reduction of a lithium-ion battery electrochemical model [PDF]

open access: yes, 2019
The use of electrochemical models makes it computationally intractable for online implementation as the model is subject to a complicated mathematical structure including partial-differential equations (PDE).
Li, Liuying   +3 more
core   +1 more source

Multiple Staggered Mesh Ewald: Boosting the Accuracy of the Smooth Particle Mesh Ewald Method

open access: yes, 2016
The smooth particle mesh Ewald (SPME) method is the standard method for computing the electrostatic interactions in the molecular simulations. In this work, the multiple staggered mesh Ewald (MSME) method is proposed to boost the accuracy of the SPME ...
Fang, Jun, Gao, Xingyu, Wang, Han
core   +2 more sources

G x E interactions on yield and quality in Coffea arabica: New F1 hybrids outperform American cultivars [PDF]

open access: yes, 2020
Conventional American cultivars of coffee are no longer adapted to global warming. Finding highly productive and stable cultivars in different environments without neglecting quality characteristics has become a priority for breeders.
Abdallah, Cécile   +13 more
core   +1 more source

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