Results 21 to 30 of about 919,285 (215)

A Novel Truncated DNAzyme Modified Paper Analytical Device for Point-of-Care Test of Copper Ions in Natural Waters

Chemosensors, 2022
On-site determination of trace copper ions in natural waters is of great significance to environmental monitoring, and how to develop accurate and specific point-of-care test methods is one critical issue.
Jiayi Wu, Ming Wang, Huanhuan Hong, Jianyuan Lin, Ning Gan, Wenchao Bi   +5 more
doaj   +1 more source

Bioaerosol Identification by Wide Particle Size Range Single Particle Mass Spectrometry

Atmosphere, 2023
The properties of bioaerosols are complex and diverse, and have a direct impact on the environment, climate, and human health. The effective identification of bioaerosols in the atmosphere is very significant with regard to accurately obtaining the ...
Xuan Li, Lei Li, Zeming Zhuo, Guohua Zhang, Xubing Du, Xue Li, Zhengxu Huang, Zhen Zhou, Zhi Cheng   +8 more
doaj   +1 more source

New Development in Ion Mobility Spectrometry for Analysis of Small Molecule Isomers [PDF]

Zhipu Xuebao, 2022
With the rapid development of modern detection technology and scientific research, the chemical structures and functions of isomers are constantly being revealed.
WU Fang-ling1, ZHANG Di2, XU Fu-xing1, FANG Xiang2, DING Chuan-fan1   +4 more
doaj   +1 more source

Long-lived radionuclides in ferromanganese crusts [PDF]

EPJ Web of Conferences
A large variety of long-lived radionuclides are present in ferromanganese crusts and can be used for the reconstruction of Earth's climate or the discovery of astrophysical events in Earth's past.
Koll Dominik, Fichter Sebastian, Lachner Johannes, Rugel Georg, Wallner Anton   +4 more
doaj   +1 more source

Association Between Plasma Vitamin D2 and Type 2 Diabetes Mellitus

Frontiers in Endocrinology, 2022
ObjectiveTo investigate the relationship between plasma vitamin D2(VD2) and type 2 diabetes(T2DM).MethodData from electronic medical records of 797 inpatients treated at Sun Yat Sen Memorial Hospital, Sun Yat-sen University between June 24, 2019 and ...
Jing-Wan Qi, Bing Huang, Bing Huang, Shuang Wang, Shuang Wang, Dan Song, Dan Song, Jing Xu, Jing Xu, Ying Cui, Ying Cui, Bin Guo   +11 more
doaj   +1 more source

Simultaneous mass spectrometry imaging of multiple neuropeptides in the brain and alterations induced by experimental parkinsonism and L-DOPA therapy

Neurobiology of Disease, 2020
Neuropeptides are important signalling molecules in the brain and alterations in their expression levels have been linked to neurological disorders such as Parkinson's disease. It is challenging to map neuropeptide changes across and within brain regions
Heather Hulme, Elva Fridjonsdottir, Halla Gunnarsdottir, Theodosia Vallianatou, Xiaoqun Zhang, Henrik Wadensten, Reza Shariatgorji, Anna Nilsson, Erwan Bezard, Per Svenningsson, Per E. Andrén   +10 more
doaj   +1 more source

Color, Antioxidant Capacity and Flavonoid Composition in Hibiscus rosa-sinensis Cultivars

Molecules, 2023
Hibiscus rosa-sinensis plants are mainly cultivated as ornamental plants, but they also have food and medicinal uses. In this work, 16 H. rosa-sinensis cultivars were studied to measure their colorimetric parameters and the chemical composition of ...
Jesica J. Mejía, Lady J. Sierra, José G. Ceballos, Jairo R. Martínez, Elena E. Stashenko   +4 more
doaj   +1 more source

Enhanced Two-Step Extraction from Biomass of Two Cymbopogon Species Cultivated in Santander, Colombia

Molecules, 2023
The insertion of circular economy principles into the essential oil (EO) production chain aims to reduce waste generation and make integral use of harvested plant material.
Angie K. Romero, Daysy J. Portillo, Sheila B. Beltrán, Lady J. Sierra, Camilo A. Álvarez, Karen J. Ramírez, Jairo R. Martínez, Elena E. Stashenko   +7 more
doaj   +1 more source

A Mass Spectrometry Primer for Mass Spectrometry Imaging [PDF]

, 2010
Mass spectrometry imaging (MSI), a rapidly growing subfield of chemical imaging, employs mass spectrometry (MS) technologies to create single- and multi-dimensional localization maps for a variety of atoms and molecules. Complimentary to other imaging approaches, MSI provides high chemical specificity and broad analyte coverage.
Stanislav S, Rubakhin, Jonathan V, Sweedler   +1 more
openaire   +2 more sources

Ion Storage Bias and Ion Fragmentation in the Ion Funnel Trap of a Hybrid Ion Mobility Spectrometer/Quadrupole Time-of-Flight Mass Spectrometer

Zhipu Xuebao
In this study, a detailed experimental characterization of the relative ion abundance bias and the ion fragmentation in an ion funnel trap were reported by using both cytochrome C and ubiquitin samples in a tandem ion funnel hybrid ion mobility ...
Zhi-da GUO, Xi-xuan GU, Kai-qun WU, Chen-lu WANG, Jun-hui LI, Jian-cheng YU, Ke-qi TANG   +6 more
doaj   +1 more source