Results 61 to 70 of about 322,846 (227)

The application of mass spectrometry imaging in traditional Chinese medicine: a review

Chinese Medicine, 2022
Mass spectrometry imaging is a frontier technique which connects classical mass spectrometry with ion imaging. Various types of chemicals could be visualized in their native tissues using mass spectrometry imaging.
Lieyan Huang, Lixing Nie, Zhong Dai, Jing Dong, Xiaofei Jia, Xuexin Yang, Lingwen Yao, Shuang-cheng Ma   +7 more
doaj   +1 more source

A Combined Desorption Ionization by Charge Exchange (DICE) and Desorption Electrospray Ionization (DESI) Source for Mass Spectrometry [PDF]

Journal of the American Society for Mass Spectrometry, 2011
A source that couples the desorption ionization by charge exchange (DICE) and desorption electrospray ionization (DESI) techniques together was demonstrated to broaden the range of compounds that can be analyzed in a single mass spectrometric experiment under ambient conditions. A tee union was used to mix the spray reagents into a partially immiscible
Chang-Ching, Chan, Mark S, Bolgar, Scott A, Miller, Athula B, Attygalle   +3 more
openaire   +2 more sources

Reconstructed Bi‐Sn Interfacial Sites Coupled with a Supramolecular Cation Cage Enable Low K+ Acidic CO2 Electroreduction to Formate

Advanced Energy Materials, EarlyView.
Pyrochlore‐derived Bi–Sn interfaces enable selective CO2 electroreduction to HCOOH in strongly acidic media (pH = 1). Interfacial electronic coupling promotes *OCHO formation while suppressing hydrogen evolution. Cryptand‐driven cation regulation enriches interfacial K+, maintaining high HCOOH faradaic efficiency of 94% even at low K+ electrolyte ...
Abdelmoniem H. Abu‐Ghazala, Xin Huang, Hsiwen Wu, Paul A. Webley, Shixia Chen, Jun Wang, Jie Zhang   +6 more
wiley   +1 more source

Matrix- and Surface-Assisted Laser Desorption/Ionization Mass Spectrometry Methods for Urological Cancer Biomarker Discovery—Metabolomics and Lipidomics Approaches

Metabolites
Urinary tract cancers, including those of the bladder, the kidneys, and the prostate, represent over 12% of all cancers, with significant global incidence and mortality rates.
Adrian Arendowski
doaj   +1 more source

Direct detection and identification of active pharmaceutical ingredients in intact tablets by helium plasma ionization (HePI) mass spectrometry

Journal of Pharmaceutical Analysis, 2014
A simple modification converts an electrospray ion source to an ambient-pressure helium plasma ionization source without the need of additional expensive hardware.
Athula B. Attygalle, Freneil B. Jariwala, Julius Pavlov, Zhihua Yang, Jason A. Mahr, Mabel Oviedo   +5 more
doaj   +1 more source

Extractive electrospray ionization mass spectrometry for analytical evaluation and synthetic preparation of pharmaceutical chemicals

Frontiers in Pharmacology, 2023
Extraction electrospray ionization mass spectrometry (EESI-MS), due to the unique configuration of its ionization module, enables the effective ionization of trace molecules of interest in samples containing complex matrices with high sensitivity, high ...
Manman Qin, Manman Qin, Manman Qin, Yuqing Qian, Lu Huang, Chao Zhong, Chao Zhong, Mingdong Li, Jun Yu, Huanwen Chen   +9 more
doaj   +1 more source

Basic principle from electrospray ionization to soft ionization mass spectrometry and development of ion source:part Ⅰ [PDF]

, 2023
Since the electrospray phenomenon was discovered, there is still an unsolved mystery about the prinple of generating charged analyte in the soft ionization phenomenon which represented by ESI.
jiehong, luo
core   +2 more sources

Atomically precise metal cluster enzymes for pathological tissue regeneration

BMEMat, EarlyView.
Schematic illustration of atomically precise metal cluster enzymes (MCEs) for pathological tissue regeneration. Atomically precise MCEs can modulate biological processes, such as attenuation of inflammatory responses, eradication of bacterial pathogens, regulation of angiogenesis, and promotion of cell development.
Ziqiang Xiong, Zhifeng Shi, Mengqing Li, Jien Han, Haoyan Chen, Maofei Ran, Shaojian Zhong, Limin Ma, Chengyun Ning, Youzhun Fan, Zhenghua Tang, Peng Yu   +11 more
wiley   +1 more source

Scalable catalyst production process for oleate hydratase whole‐cell biocatalysis

Biotechnology Progress, EarlyView.
This study establishes a scalable lactose‐induced fed‐batch fermentation for an Escherichia coli whole‐cell biocatalyst containing an oleate hydratase. Operation at a higher growth rate markedly increased biomass yields while maintaining catalyst activity and was demonstrated at 150 L scale.
Rebekka Horstmann, Mario Beckers, Jörn Viell, Fabian Allan Watt, Valentin Steier, Marcel Mann, Jørgen B. Magnus   +6 more
wiley   +1 more source

Proanthocyanidins Extracted from Rhododendron pulchrum Leaves as Source of Tyrosinase Inhibitors: Structure, Activity, and Mechanism. [PDF]

PLoS ONE, 2015
The objective of this study was to assess the structure, anti-tyrosinase activity, and mechanism of proanthocyanidins extracted from Rhododendron pulchrum leaves.
Wei-Ming Chai, Rui Wang, Man-Kun Wei, Zheng-Rong Zou, Rong-Gen Deng, Wei-Sheng Liu, Yi-Yuan Peng   +6 more
doaj   +1 more source