Results 31 to 40 of about 1,326,002 (312)

Development and validation of a fast gas chromatography combustion isotope ratio mass spectrometry method for the detection of epiandrosterone sulfate in urine [PDF]

, 2020
In doping control, to confirm the exogenous origin of exogenously administered anabolic androgenic steroids (AAS), a gas chromatography combustion isotope ratio mass spectrometry (GC-C-IRMS) analysis is performed.
De Wilde, Laurie, Polet, Michaël, Van Eenoo, Peter, Van Renterghem, Pieter   +3 more
core   +1 more source

Characterization of Balsamic Vinegars Using High-Performance Liquid Chromatography and Gas Chromatography

Applied Sciences, 2022
Vinegars are natural products manufactured by two-step fermentation. One of the most famous is balsamic vinegar, especially that produced in Modena, Italy. Its unique production process positively distinguishes it from other vinegars. There are basically
Michal Kašpar, Petr Česla
doaj   +1 more source

Measurement of teicoplanin by liquid chromatography-tandem mass spectrometry:development of a novel method [PDF]

, 2012
Teicoplanin is an antibiotic used for the treatment of endocarditis, osteomyelitis, septic arthritis and methicillin-resistant Staphylococcus aureus. Teicoplanin is emerging as a suitable alternative antibiotic to vancomycin, where their trough serum ...
Bailey, Lisa M, Davison, Andrew S, Dutton, John, Fung, Francis H Y, Hopkins, John P P, Tang, Jonathan C Y   +5 more
core   +1 more source

Preparation characterization and non-isothermal decomposition kinetics of different carbon nitride sheets

Egyptian Journal of Petroleum, 2020
Three series of graphitic carbon nitride g-C3N4 namely bulk (BCN), sulfur-doped (SCN) and thin layer (TCN) sheets are prepared using urea precursor under a microwave thermal pyrolysis. Several analytical techniques are used to characterize the obtained g-
M. Elshafie, S.A. Younis, P. Serp, E.A.M. Gad   +3 more
doaj   +1 more source

Multidimensional Chromatography and Its Applications in Food Products, Biological Samples and Toxin Products: A Comprehensive Review

Separations, 2022
Food, drugs, dyes, extracts, and minerals are all made up of complex elements, and utilizing unidimensional chromatography to separate them is inefficient and insensitive.
Ruhul Amin, Faruk Alam, Biplab Kumar Dey, Jithendar Reddy Mandhadi, Talha Bin Emran, Mayeen Uddin Khandaker, Sher Zaman Safi   +6 more
doaj   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Metabolic fingerprinting, antioxidant characterization, and enzyme-inhibitory response of Monotheca buxifolia (Falc.) A. DC. extracts

BMC Complementary Medicine and Therapies, 2020
Background Ethnobotanical and plant-based products allow for the isolation of active constituents against a number of maladies. Monotheca buxifolia is used by local communities due to its digestive and laxative properties, as well as its ability to cure ...
Joham Sarfraz Ali, Hammad Saleem, Abdul Mannan, Gokhan Zengin, Mohamad Fawzi Mahomoodally, Marcello Locatelli, Syafiq Asnawi Zainal Abidin, Nafees Ahemad, Muhammad Zia   +8 more
doaj   +1 more source

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

, 2015
No abstract ...
Biziuk, Marek, Morrison, Calum, Namieśnik, Jacek, Płotka-Wasylka, Justyna M.   +3 more
core   +1 more source

Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions

FEBS Letters, EarlyView.
We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva, Puspa Kunwar, Md Ibnul Rifat Rahman, Joanna Koryo Kwao, Nathan Lehman, Zihan Zhang, Trenton Paul, Claire Cheng, Nicholas Truex, Hui‐Ting Lee, Jun Zhang   +10 more
wiley   +1 more source

A Novel High-Throughput and Sensitive Electrochemiluminescence Immunoassay System

Bioengineering
(1) Background: In vitro diagnostic (IVD) tests are the main means of obtaining diagnostic information for clinical purposes. The electrochemiluminescence immunoassay (ECLIA) has become an important in vitro diagnostic technique. It has unique advantages
Xiancheng Liu, Shuang Zhao, Yan Xu, Bo Zhang, Junli Huang, Feng Liu, Ning Yang, Wenhua Lu, Dandan Shi, Dezhong Xie, Yuanfang Hou, Guixue Wang   +11 more
doaj   +1 more source