Results 31 to 40 of about 37,190 (246)

Direct Ambient Analysis of Pharmaceutical and Ecstasy Tablets

CHIMIA, 2006
Desorption electrospray ionization (DESI) is a new ionization technique recently introduced in analytical chemistry for the ambient analysis of surfaces by mass spectrometry.
Luc Alexis Leuthold, Jean-François Mandscheff, Marc Fathi, Christian Giroud, Marc Augsburger, Emmanuel Varesio, Gérard Hopfgartner   +6 more
doaj   +1 more source

Toward Depth-Resolved Analysis of Plant Metabolites by Nanospray Desorption Electrospray Ionization Mass Spectrometry

Molecules, 2022
Nanospray desorption electrospray ionization (nano-DESI) is one of the ambient desorption ionization methods for mass spectrometry (MS), and it utilizes a steady-state liquid junction formed between two microcapillaries to directly extract analytes from ...
Sangwon Cha, Gyouwoong Jun, Yougyeong Park, Sung Jun An, Donghoon Lee   +4 more
doaj   +1 more source

Shapley Value as a Quality Control for Mass Spectra of Human Glioblastoma Tissues

Data, 2023
The automatic processing of high-dimensional mass spectrometry data is required for the clinical implementation of ambient ionization molecular profiling methods. However, complex algorithms required for the analysis of peak-rich spectra are sensitive to
Denis S. Zavorotnyuk, Anatoly A. Sorokin, Stanislav I. Pekov, Denis S. Bormotov, Vasiliy A. Eliferov, Konstantin V. Bocharov, Eugene N. Nikolaev, Igor A. Popov   +7 more
doaj   +1 more source

A Comparative Study of Some Values of ionization constants of Oximes and Phenolic Acids Derived fromِ Aliphatic and Aromatic Carbonyl Compounds [PDF]

مجلة التربية والعلم, 1999
The project includes on the determination of ionization constants kn for thirteen acidic new imines as derived form aliphatic and aromatic ketones with different aldehydes, where n is the number of acid.
Adil Azooz, Maathir Al-Zubaidy
doaj   +1 more source

Atmospheric pressure mass spectrometric imaging of live hippocampal tissue slices with subcellular spatial resolution

Nature Communications, 2017
Ambient mass spectrometry-based approaches have found application in biology and medicine. Here the authors report a mass spectrometric imaging method (ambient nanoPALDI) for live hippocampal tissues, based on gold nanorodassisted femtosecond laser ...
Jae Young Kim, Eun Seok Seo, Hyunmin Kim, Ji-Won Park, Dong-Kwon Lim, Dae Won Moon   +5 more
doaj   +1 more source

Electrojet control of ambient ionization near the crest of the equatorial anomaly in the Indian zone [PDF]

Annales Geophysicae, 2009
A long-term (1978–1990) database of total electron content (TEC) from a location (Calcutta: 22.58° N, 88.38° E geographic, dip: 32° N) near the northern crest of the equatorial ionization anomaly has extensively been studied to ...
S. K. Chakraborty, R. Hajra
doaj   +1 more source

Self‐Sintering Ionogel Binder for Flexible, Recyclable, and Healable Printed Giant Magnetoresistive Sensors

Advanced Functional Materials, EarlyView.
ABSTRACT Electronic waste has emerged as a major environmental challenge, driven by the massive consumption and a limited lifetime of modern electronic devices, stimulating the development of sustainable electronics. Here, an all‐biomaterial gelatin‐choline‐citric acid ([Ch][CA]) ionogel is developed as an active binder to realize self‐sintered ...
Lin Guo, Xiaotao Wang, Guannan Mu, Proloy Taran Das, Igor Veremchuk, Conrad Schubert, Aaron D. Cross, Yevhen Zabila, Xuan Peng, Larysa Baraban, Denys Makarov   +10 more
wiley   +1 more source

Optical Microscopy-Guided Laser Ablation Electrospray Ionization Ion Mobility Mass Spectrometry: Ambient Single Cell Metabolomics with Increased Confidence in Molecular Identification

Metabolites, 2021
Single cell analysis is a field of increasing interest as new tools are continually being developed to understand intercellular differences within large cell populations.
Michael J. Taylor, Sara Mattson, Andrey Liyu, Sylwia A. Stopka, Yehia M. Ibrahim, Akos Vertes, Christopher R. Anderton   +6 more
doaj   +1 more source

Multimodal Optoelectronic Synapses for Neuromorphic Intelligence: Coupling Light, Electrical, Thermal, and Beyond

Advanced Functional Materials, EarlyView.
This review revisits optoelectronic neuromorphic devices that extend from unimodal sensing toward multimodal perception. Five types of stimuli‐to‐output information flow that are classified based on the device roles within the system and applications are summarized and discussed.
Jihyun Shin, Junhyung Cho, Wangmyung Choi, Jaehyun Hur, Jae Kyeong Jeong, Ulrike Kraft, Hocheon Yoo   +6 more
wiley   +1 more source

Ambient Ionization Mass Spectrometry Based on Laser Ablation-Carbon Fiber Corona Discharge Ionization

Zhipu Xuebao
Metabolites are the regulated end products present in cells, tissues, or organisms. As an important class of metabolites in living organisms, lipids play critical roles in numerous biological processes.
Xiao-long CHEN, Yin-long GUO, Guang-bo QU   +2 more
doaj   +1 more source