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Improved identification of glycerophospholipids using a linear ion trap mass spectrometer(LTQ) with Pulsed Q Collision Induced Dissociation(PQD)
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作者 Tanxi Cai, Jing Li, Peng Xue, Zhengsheng Xie, Ziyou Cui, Junjie Hou, Xiulan Chen, Peng Wu, Pingsheng Liu, Fuquan Yang Proteomic Platform & National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China, 100101 《生物物理学报》 CAS CSCD 北大核心 2009年第S1期191-191,共1页
Phospholipids are the major building blocks of the biological membranes. Additionally, phospholipids modulate membrane trafficking and metabolites derived from their
关键词 PQD with Pulsed Q Collision Induced Dissociation Improved identification of glycerophospholipids using a linear ion trap mass spectrometer
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Integrated Device for Osmotic Energy Collection and Detection Based on the Metal–Organic Framework of Nanoconfinement Channels
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作者 Hongyan Qi Jundong Zhong +8 位作者 Weibo Sun Tingting Xu Zhen Xing Shuang Zhao Hujun Qian Haibo Zhang Jianxin Mu Xuanbo Zhu Lei Jiang 《CCS Chemistry》 2025年第5期1424-1437,共14页
While industrial wastewater discharge causes pollution,it also contains abundant neglected energy.However,establishing effective methods for energy harvesting and real-time monitoring of pollution sources is a serious... While industrial wastewater discharge causes pollution,it also contains abundant neglected energy.However,establishing effective methods for energy harvesting and real-time monitoring of pollution sources is a serious challenge,and includes high-salt solution accompanying nickel ions(Ni(II))in the electroplating industry.Here,a nanoconfinement channel design strategy was adopted to custombuild a three-dimensional(3D)interpenetrating ion channel of metal–organic frameworks(MOFs).By introducing specific functional groups,the charge density of the ion channels could be adjusted.Osmotic energy harvesting achieved a maximumoutput power density of 9.1 W/m^(2),which was 6-fold greater than that of the typical commercial material,UiO-67,known to possess enhanced water stability and methane adsorption capacity.Benefiting from the spatial distribution design of functional groups in the nanoconfinement channels enabled excellent ion selectivity and optimal energy harvesting.Meanwhile,the nanoconfinement channels and functional groups collaborate to create a sensitive ion concentration detection space,presenting a well-designed modified ion channel for emission standards.When Ni(II)appeared,the current signal decreased by∼20-fold.The tripartite cooperation of functional groups,nanoconfinement,and Ni(II)-enabled stable and accurate detection ensured smooth working progress.This study not only provides a design strategy for energy harvesting and detection but also inspires the future design of integrated devices. 展开更多
关键词 nanoconfinement channels of metal-organic frameworks ion transport ion identification osmotic energy harvesting integrated devices
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Unveiling the metabolic fate of drugs through metabolic reaction-based molecular networking
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作者 Haodong Zhu Xupeng Tong +8 位作者 Qi Wang Aijing Li Zubao Wu Qiqi Wang Pei Lin Xinsheng Yao Liufang Hu Liangliang He Zhihong Yao 《Acta Pharmaceutica Sinica B》 2025年第6期3210-3225,共16页
Effective annotation of in vivo drug metabolites using liquid chromatography-mass spectrometry(LCeMS)remains a formidable challenge.Herein,a metabolic reaction-based molecular networking(MRMN)strategy is introduced,wh... Effective annotation of in vivo drug metabolites using liquid chromatography-mass spectrometry(LCeMS)remains a formidable challenge.Herein,a metabolic reaction-based molecular networking(MRMN)strategy is introduced,which enables the“one-pot”discovery of prototype drugs and their metabolites.MRMN constructs networks by matching metabolic reactions and evaluating MS^(2)spectral similarity,incorporating innovations and improvements in feature degradation of MS^(2)spectra,exclusion of endogenous interference,and recognition of redundant nodes.A minimum 75%correlation between structural similarity and MS^(2)similarity of neighboring metabolites was ensured,mitigating false negatives due to spectral feature degradation.At least 79%of nodes,49%of edges,and 97%of subnetworks were reduced by an exclusion strategy of endogenous ions compared to the Global Natural Products Social Molecular Networking(GNPS)platform.Furthermore,an approach of redundant ions identification was refined,achieving a 10%-40%recognition rate across different samples.The effectiveness ofMRMN was validated through a single compound,plant extract,and mixtures of multiple plant extracts.Notably,MRMN is freely accessible online at https://yaolab.network,broadening its applications. 展开更多
关键词 Drug metabolism MRMN LCeMS MS^(2)feature degradation improvement Redundant ions identification Endogenous interference elimination YaoLab online platform Prototypes and metabolites“one-pot”annotation
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