Results 91 to 100 of about 936,931 (309)

Identification of nitrogen-polyaromatic compounds in asphaltene from co-processing of coal and petroleum residue using chromatography with mass spectrometry

open access: yesInternational Journal of Coal Science & Technology, 2017
Asphaltene, from co-processing of coal and petroleum residues is one of the most precious and complex molecular mixtures existing, with tremendous economic relevance. Asphaltene was separated by Soxhlet extraction with methylbenzene and then divided into
Pingping Zuo, Wenzhong Shen
doaj   +1 more source

Determination of 8 Endogenous Alkaloid Components in Boletus Using Ultrahigh-Performance Liquid Chromatography Combined with Quadrupole-Time of Flight Mass Spectrometry

open access: yesJournal of Food Quality, 2020
A ultrahigh performance liquid chromatography coupled with quadrupole-time of flight mass spectrometry (UPLC-Q-TOF/MS) method was developed for simultaneous determination of 8 endogenous alkaloid compounds in Boletus. Boletus samples were extracted by 50%
Junmei Ma   +7 more
doaj   +1 more source

Metabolic Profiling of Plasma in Overweight/Obese and Lean Men using Ultra Performance Liquid Chromatography and Q-TOF Mass Spectrometry (UPLC−Q-TOF MS)

open access: yesJournal of Proteome Research, 2010
Obesity is currently epidemic in many countries worldwide and is strongly related to diabetes and cardiovascular disease. This study investigated the differences in metabolomic profiling between overweight/obese and normal-weight men. Overweight/obese (n=30) and age-matched, normal-weight men (n=30) were included.
Ji Young, Kim   +7 more
openaire   +3 more sources

3D Large‐Scale Subwavelength‐Resolution Sound Sheet Tomography Based on an Active and Programmable Circular Meta‐Array

open access: yesAdvanced Science, EarlyView.
A programmable 2048‐element circular ultrasound array combined with a compact acoustic lens produces a thin “sound sheet” over a large field of view, and records echoes with wide angular diversity across the ring aperture. Coherence‐enhanced beamforming converts full‐matrix data into high‐contrast tomographic slices, delivering near‐diffraction‐limited
Qiu‐De Zhang   +11 more
wiley   +1 more source

Biofilm‐Binding Phages Enhance Biofilm Eradication by Synergistic Photothermal and Photodynamic Therapy

open access: yesAdvanced Science, EarlyView.
Engineered phage‐based trifunctional nanofibers are developed for synergistic biofilm eradication. Biofilm‐binding phages, armed with AuNPs and TCPP, serve as both warheads and scaffolds, endowing the phototherapy agents with biofilm‐anchoring ability. Upon light irradiation, AuNPs induce photothermal therapy, while TCPP generates 1O2 for photodynamic ...
Ying Cao   +9 more
wiley   +1 more source

sj-docx-1-npx-10.1177_1934578X231207524 - Supplemental material for A Simple and Efficient UPLC-ESI-Q-TOF-MS Method for Determining the Chemical Composition in Rhizomes of Multiple Stems Paris polyphylla var. yunnanensis

open access: yes, 2023
Supplemental material, sj-docx-1-npx-10.1177_1934578X231207524 for A Simple and Efficient UPLC-ESI-Q-TOF-MS Method for Determining the Chemical Composition in Rhizomes of Multiple Stems Paris polyphylla var.
Haifeng Li (142063)   +4 more
core   +1 more source

MetalCenter‐Dependent Selectivity Divergence in MN4 Single‐Atom Catalysts for Aerobic HMF Oxidation

open access: yesAdvanced Science, EarlyView.
Two single‐atom catalysts with M‐N4 configurations (FeN4 and CoN4) were developed for selective HMF oxidation. FeN4 achieves 93.9% selectivity toward FFCA via superoxide anions (O2•−), while CoN4 preferentially produces FDCA through hydroxyl radicals (•OH). DFT calculations reveal that distinct adsorption energies and charge redistribution at the metal
Haoyu Wang   +6 more
wiley   +1 more source

Table1_Jiawei Kongsheng Zhenzhong Pill: marker compounds, absorption into the serum (rat), and Q-markers identified by UPLC-Q-TOF-MS/MS.docx

open access: yes
Background: The Jiawei Kongsheng Zhenzhong pill (JKZP), a Chinese herbal prescription comprised of eight Chinese crude drugs, has been historically employed to treat neurological and psychological disorders.
Yue Zhao (186573)   +8 more
core   +1 more source

DataSheet1_Potential hepatoprotective effects of Cistanche deserticola Y.C. Ma: Integrated phytochemical analysis using UPLC-Q-TOF-MS/MS, target network analysis, and experimental assessment.docx

open access: yes, 2022
Cistanche deserticola Y.C. Ma (CD) possesses hepatoprotective activity, while the active ingredients and involved mechanisms have not been fully explored.
Yaying Li (5622215)   +8 more
core   +1 more source

Rapid Analysis of the Main Components of the Total Glycosides of by UPLC/Q-TOF-MS

open access: yesNatural Product Communications, 2010
A rapid method for the analysis of the main components of the total glycosides of Ranunculus japonicus (TGOR) was developed using ultra-performance liquid chromatography with quadrupole-time-of-flight mass spectrometry (UPLC/Q-TOF-MS).
Wen Rui   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy