Speed速度 速度指标由多个采集参数共同决定,主要包含高激光频率(High Laser Rate = 5kHz),激光扫描速度 (Motion of Sample Relative to Laser Beam = 5mm/s),高离子化效率 (High Ionization Efficiency ~ 50%),高速采集,处理&质谱数据保存速率 (High...
Speed速度 速度指标由多个采集参数共同决定,主要包含高激光频率(High Laser Rate = 5kHz),激光扫描速度 (Motion of Sample Relative to Laser Beam = 5mm/s),高离子化效率 (High Ionization Efficiency ~ 50%),高速采集,处理&质谱数据保存速率 (High Rate ~ 500 spectra/s)。速度的局限性也与样本采集的质量范...
MALDI-TOF MS指纹图谱分型的原理是建立在MALDI-TOF MS鉴定微生物的基础上,利用核心图谱(the main spectra,MSP)建造标准蛋白指纹图谱库,主要采用主元素分析(principal component analysis,PCA)进行数据处理。MALDI-TOF MS质谱图的构建是以检测到的离子质荷比(m/z)为横坐标,离子峰强度为纵坐标形成的,通过对得到的病...
Speed 速度 速度指标由多个采集参数共同决定,主要包含高激光频 率(High Laser Rate = 5 kHz),激光扫描速度 (Motion of Sample Relative to Laser Beam = 5 mm/s),高离子化效率 (High Ionization Eff iciency ~ 50%),高速采集,处理&质谱数 据保存速率 (High Rate ~ 500 spectra/s)。速度的局限性也与 ...
For optimized MALDI spectra, the molar matrix-to-analyte ratio is normally adjusted as to fall into the range from 1000: 1 to 100,000: 1. And then the mixture is then spotted onto a metal target plate for analysis. After drying, the mixture of the sample and matrix co-crystallizes and...
BioNumerics softwarecluster analysisMALDI-TOF MS spectrapeak mining approachesspectral profilesSummary The analysis of matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry (MALDI-TOF MS) spectra has been integrated in the BioNumerics software. This chapter discusses the different ...
MALDI-TOFMS spectra of water-soluble portions from cellulose as treated in a supercritical water, ...
The database contains mass spectra of known microorganisms, and the software matches the experimental mass spectrum with the closest fit in the database. The identification of the microorganism is based on the principle of spectral matching, where the software calculates the similarity score between ...
MALDI-TOF-MS MALDI-TOF-MS Matrix-AssistedLaserDesorptionIonizationTimeofFlightMassSpectrometry Massspectrometry(MS)ComponentsofaMassSpectrometer IonFormationSeparationDetection IonSource Relativeabundance(%)MassAnalyzer IonDetector Inlet SampleIntroduction DataSystem MassSpectrum m/z NobelPrize（2002）KoichiTanaka（...
Matrix-assisted laser desorption/ionization time-of-flight mass spectra (MALDI/TOF/MS) of sodium poly(styrenesulfonate)-block-poly (tert-butylstyrene) (NaPSS-b-PtBS) and polystyrene-block-poly (tert-butylstyrene) (PS-b-PtBS) diblock copolymers were obtained. MALDI/TOF/MS of NaPSS-b-PtBS ...