Quantum Chemical Analysis of the Molecular and Fragment Ion Formation of Butyrophenone by High-Electric Field Tunnel Ionization at Atmospheric Pressure [0.03%]
超临界气氛中高压隧穿电离引起丁苯酮分子及其碎片离子形成的量子化学研究
Mitsuo Takayama
Mitsuo Takayama
The molecular ion M+· was observed when the liquid sample of butyrophenone was supplied using atmospheric pressure corona discharge (APCD). In contrast, the vapor supply resulted in the formation of the protonated molecule [M+H]+. The mass...
Rapid Analysis for α-Tocopherol and Its Oxidative Products in the Pisum sativum L. Leaf Using Supercritical Fluid Chromatography-Medium Vacuum Chemical Ionization Tandem Mass Spectrometry [0.03%]
基于超临界流体色谱-中真空化学电离串联质谱的α-生育酚及其氧化产物的快速分析——以豌豆叶子为例
Toshinobu Hondo,Yumi Miyake,Michisato Toyoda
Toshinobu Hondo
A method for the rapid determination of α-tocopherol (α-T) and its oxidative products in plant tissue has been developed using supercritical fluid extraction (SFE) coupled with supercritical fluid chromatography (SFC) and medium vacuum ch...
Quantitation of Host Cell Proteins by Capillary LC/IMS/MS/MS in Combination with Rapid Digestion on Immobilized Trypsin Column Under Native Conditions [0.03%]
基于原位条件下结合快速酶解的毛细管LC/IMS/MS/MS测定宿主细胞蛋白
Ryota Tomioka,Kosuke Ogata,Yasushi Ishihama
Ryota Tomioka
Host cell protein (HCP) impurities are considered a critical quality attribute of biopharmaceuticals because of their potential to compromise safety and efficacy, and LC/MS-based analytical methods have been developed to identify and quanti...
Determination of Choline-Containing Compounds in Rice Bran Fermented with Aspergillus oryzae Using Liquid Chromatography/Tandem Mass Spectrometry [0.03%]
高效液相色谱-串联质谱法测定稻糠中磷脂酰胆碱的含量
Masamitsu Maekawa,Anna Iwahori,Masaki Kumondai et al.
Masamitsu Maekawa et al.
Choline-containing compounds are essential nutrients for human activity, as they are involved in many biological processes, including cell membrane organization, methyl group donation, neurotransmission, signal transduction, lipid transport...
Rapid Analysis of Glucosinolates Using Direct-Infusion Mass Spectrometry [0.03%]
利用直接 infused质谱快速分析硫苷类化合物
Miho Tanewata,Akira Oikawa
Miho Tanewata
We developed a rapid, accurate, and quantitative method for analyzing glucosinolates (GSLs) by combining column-free liquid chromatography (LC) with direct-infusion mass spectrometry (MS). Conventional methods for analyzing GSLs take a long...
Analysis of the Correlation between Cholesterol Levels in Blood Using Clinical Data and Hair Using Mass Spectrometry Imaging [0.03%]
基于临床数据和质谱成像技术分析头发中胆固醇水平的相关性研究
Erika Nagano,Hiromi Saito,Tetsuya Mannari et al.
Erika Nagano et al.
Mass spectrometry imaging (MSI) is a technique that visualizes the distribution of molecules by ionizing the components on the surface of a sample and directly detecting them. Previously, MSI using hair has primarily been used in the forens...
Direct ESI-MS of Ionic Liquids Using High-Pressure Electrospray From Large-Bore Emitters Made of Micropipette Tips [0.03%]
使用高压电喷雾的大内径发射器进行离子液体的直接ESI-MS检测
Takeshi Matsuda,Lee Chuin Chen
Takeshi Matsuda
Electrospray ionization mass spectrometry of neat undiluted ionic liquid (IL) and the analysis of protein with the doping of IL were performed using high-pressure electrospray. The use of disposable micropipette tips as emitters eased the h...
Ambient Mass Spectrometry and Machine Learning-Based Diagnosis System for Acute Coronary Syndrome [0.03%]
急性冠脉综合征的环境质谱与机器学习诊疗系统
Que N N Tran,Takeshi Moriguchi,Masateru Ueno et al.
Que N N Tran et al.
Aims: The purpose of this study is to establish a novel diagnosis system in early acute coronary syndrome (ACS) using probe electrospray ionization-mass spectrometry (PESI-MS) and machine learning (ML) and to validate the diagnostic accurac...
Desorption of Positive and Negative Ions from Areoles of Opuntia microdasys Cactus at Atmospheric Pressure: Cactus-MS [0.03%]
仙人掌肉质茎上的毛体在大气压下脱附正负离子的行为：Cactus-MS
Jürgen H Gross
Jürgen H Gross
The areoles and spines of cacti can be used to desorb ions of ionic liquids (ILs) by the mere action of an electric field into the atmospheric pressure (AP) interface of a mass spectrometer. The small cactus species Opuntia microdasys bears...
Development of a Mass Spectrometry Imaging Method to Evaluate the Penetration of Moisturizing Components Coated on Surgical Gloves into Artificial Membranes [0.03%]
开发用于评估涂抹在手术手套上的保湿成分进入人工膜中的渗透性的质谱成像方法
Erika Nagano,Kazuki Odake,Toru Akiyoshi et al.
Erika Nagano et al.
Skin dryness and irritant contact dermatitis induced by the prolonged use of surgical gloves are issues faced by physicians. To address these concerns, manufacturers have introduced surgical gloves that incorporate a moisturizing component ...