Glycoside Fragmentation in Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry of Natural Products of Ginsenosides [0.03%]
人参皂苷天然产物的基质辅助激光解吸/离子化质谱中的糖苷碎片化反应
Tohru Yamagaki
Tohru Yamagaki
I investigated the tandem mass spectrometry (MS/MS) fragmentation of ginsenoside glycosides using matrix-assisted laser desorption/ionization MS for ginsenosides Rg1, Rh1, Rb1, and Rb3, focusing on their sodium adduct molecules [M+Na]+. The...
Report on the 10th Asia-Oceania Mass Spectrometry Conference (AOMSC2025) [0.03%]
第10届亚洲-大洋洲质谱会议（AOMSC2025）报告
Yasushi Ishihama
Yasushi Ishihama
Click-and-Analyze: Automated Pinpoint Ambient Mass Spectrometry with Sheath-Flow Probe Electrospray Ionization [0.03%]
轻触即析：具有鞘流探针电喷雾离子源的准确定点质谱分析自动化技术
Lei Li,Qiangqiang Xie,Lee Chuin Chen et al.
Lei Li et al.
We report a robotic sheath-flow probe electrospray ionization mass spectrometry system with a new probe design and automated positioning capabilities for pinpoint ambient mass spectrometry. The system integrates a 3-axis Cartesian robot wit...
Structural Determination of Bl-3, an Insecticidal Peptide from the Buthacus leptochelys Scorpion Venom [0.03%]
来自Buthacus leptochelys蝎子毒液的杀虫肽Bl-3的结构测定
Ryo Shimase,Yusuke Yoshimoto,Alhussin Mohamed Abdelhakeem Megaly et al.
Ryo Shimase et al.
Scorpion venoms contain a variety of peptides that exhibit toxicity toward insects or mammals by acting on ion channels. We previously isolated four insecticidal peptides (Bl-1, Bl-2, Bl-3, and Bl-4) from the venom of Buthacus leptochelys. ...
Temperature Dependence of d-Amino-Acid Selectivity of l-Tryptophan Probed by Ultraviolet Photodissociation Spectroscopy [0.03%]
利用紫外光解质谱研究L-色氨酸的D-氨基酸选择性及其温度依赖性
Keitaro Kitahashi,Akimasa Fujihara
Keitaro Kitahashi
Temperature effects on differentiating d-amino acids using the molecular recognition ability of l-tryptophan were investigated by ultraviolet photodissociation spectroscopy in the gas phase. Temperature-dependent ultraviolet photodissociati...
Exploration of Yeast Species Suitable for Preparation of Stable Isotope-Labeled Internal Standards Extracts (SILIS) [0.03%]
用于制备稳定同位素标记内标提取物(SILIS)的酵母种类探索研究
Taisuke Seike,Kahar Prihardi,Chiaki Ogino et al.
Taisuke Seike et al.
Isotope dilution mass spectrometry is a widely used method for measuring intracellular metabolite concentrations, relying on the ratio of peak areas between the target compound and its stable isotope-labeled internal standard. For metabolom...
Algorithm for Selecting Organic Compounds to Verify the Resolution of Electron Ionization Mass Spectrometers [0.03%]
用于验证电子离子化质谱仪分辨率的有机化合物选择算法
Valentin G Tkachenko,Sergey V Silkin,Alexandr V Sakharov et al.
Valentin G Tkachenko et al.
The ion coalescence phenomenon complicates the evaluation of the effective resolution of Fourier-transform mass spectrometers. We propose an approach for confirming the resolution of an electron ionization Fourier-transform mass spectromete...
Recent Applications of Artificial Intelligence and Related Technical Challenges in MALDI MS and MALDI-MSI: A Mini Review [0.03%]
人工智能在基质辅助激光解吸电离质谱及基质辅助激光解吸电离成像质谱中的最新应用及相关技术挑战：一篇简评
Ali Farhan,Yi-Sheng Wang
Ali Farhan
Artificial intelligence (AI) has provided viable methods for retrieving, organizing, and analyzing mass spectrometry (MS) data in various applications. However, several challenges remain as this technique is still in its early, preliminary ...
Mass Spectrometry Imaging of Time-Dependently Photodegraded Light Stabilizers in Polyethylene Films Using Tapping-Mode Scanning Probe Electrospray Ionization [0.03%]
利用轻触模式扫描探针电喷雾离子化技术研究聚乙烯薄膜中光稳定剂时间依赖性光降解的质谱成像技术
Tsuyoshi Akiyama,Yoichi Otsuka,Mengze Sun et al.
Tsuyoshi Akiyama et al.
Light stabilizers are additives that are widely used to improve the lifespan and performance of polymer materials. To develop advanced polymer materials, analytical techniques investigate the degradation mechanisms and distribution of addit...
An Effective Approach to Mass Spectrometry Imaging Data Partitioning Using UMAP and k-Means Clustering [0.03%]
基于UMAP和k-means聚类的有效质谱成像数据分割方法
Shinichi Yamaguchi,Masaya Ikegawa
Shinichi Yamaguchi
In this study, we propose an effective summarization method for mass spectrometry imaging (MSI) data and demonstrate its efficacy. The MSI data used in this study were obtained from thoracic tissue sections of mice, including the thymus. Th...