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Showing 1 to 20 of 84 for “"Spectrometric analysis"”.
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Mass Spectrometric Analysis of Tyrosine Metabolic Enzymes
… of DHI and ROS. Purification and MS analysis of DCE and DCT determined that N-glycosylation is a primary post-translational modification. Q-TOF mass spectrometry was used to determine N-glycosylation patterns from Aedes aegypti DCE and MALDI-TOF/TOF was used to determine multiple …
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Real-time mass spectrometric analysis of catalytic reaction mechanisms
… Processing and interpretation of mass spectrometric data was a significant part of all of these projects, so a python framework was developed to assist in these tasks and its features are also documented herein.
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Estimating limit of detection for mass spectrometric analysis methods
Avastamispiir (AP) on üks olulisemaid parameetreid analüüsimeetodite valideerimisel. See näitab madalaimat analüüdi kontsentratsiooni, kus võime hea tõenäosusega öelda, et analüüt on tõesti proovis sees. See parameeter on seega oluline tulemuste õigeks tõlgendamiseks ja analüüsimeetodi …
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Electrospray mass spectrometric analysis of transition metal carbonyl clusters
… with anionic transition metal carbonyl reagents. Analysis of the reaction between ~-Ge[Coi(C0)7h and [Co(C0)4r revealed the inter-conversion processes between previously isolated clusters, and was crucial in identifying the unheralded [Co10Gei(C0)24f product. Conditions for optimal yields of this …
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Mass spectrometric analysis of chitooligosaccharides and their interaction with proteins
Chitooligosaccharides are composed of glycosamin and N-acetylglycisamin residues. Gel permeations chromatography is employed for the separation of oligomers, cation exchange chromatography is used for the separation of homologes and isomers. Trideuterioacetylation of the chitooligosaccharides …
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Mass spectrometric analysis of surface adsorbed oxygen on platinum electrodes.
Massachusetts Institute of Technology. Dept. of Chemistry. Thesis. 1969. Ph.D.
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The fast atom bombardment mass spectrometric analysis of the carbamate pesticide carbaryl
The carbamate pesticide, carbaryl, was quantitatively studied using fast atom bombardment mass spectrometry (FAB-MS). Mass spectra were obtained in the positive ion-mode using both 2-nitrophenyloctyl ether (NPOE) and 3-nitrobenzyl alcohol (NBA) as matrix liquids. The sample was applied by three …
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Mass spectrometric analysis of signaling peptides in single neurons and their classification
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01
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Secondary-ion mass spectrometric analysis of oxygen-grain boundary diffusion in magnesium-oxide bicrystals
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1995.
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Support experiments to the pyrolysis/gas chromatographic/mass spectrometric analysis of the surface of Mars
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1979.
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Mass Spectrometric Analysis of Thiol Proteins/Peptides Following Selenamide Derivatization And Electrolytic Reduction of Disulfide Bonds
… preparation. The capability for liquidsamples analysis allows DESI-MS to be coupled with many devices such as electrochemical cells and liquid chromatography (LC) for novel analytical applications. The online coupling of a thin-layer electrochemical flow cell with liquid sample DESI-MS can be …
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Mass Spectrometric Analysis of Cytoplasmic Ribosomal Proteins in Drug Resistant and Drug Susceptible Human Cell Lines
This study examines changes in cytoplasmic ribosomes that accompany drug resistance in MCF-7 breast cancer cells. Differences in ribosomal protein composition between drug susceptible and drug resistant cell lines were examined. Ribosomes were isolated from mitoxantrone susceptible and mitoxantrone …
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Mechanical injury and inflammatory cytokines affect cartilage integrity and tissue homeostasis : a mass spectrometric analysis of proteins with relevance to arthritis
Osteoarthritis is characterized by synovial joint degeneration, and its cardinal pathological feature is degeneration and loss of the articular cartilage joint surface. While the aetiology of osteoarthritis is unknown, risk factors include gender, age, obesity, and prior joint injury. Joint …
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Qualitative and Quantitative Evaluation of Volatile Compounds of Deep Frying Oil and French Fries: Static and Dynamic Headspace-Gas Chromatography-Mass Spectrometric Analysis
… filtered treatment was carried out. Quantitative analysis of selected volatile flavor compounds in French fries was achieved by using dynamic headspace-capillary GC-mass spectrometry. The total amount of flavor significant volatiles increased in the following order: non filtered treatment $>$ …
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Reactivity Studies of Tridhydropyridine Radical Cautions by using Fourier-Transform Ion Cyclotron Resonance Mass Spectrometry and Advancement of Mass Spectrometric Analysis of Asphaltenes and Degradation Products
… methods. The specific goal was to develop a mass spectrometric evaporization/ionization method that produces only one ion type per analyte without fragmentation that can be used to derive MW information The results demonstrate that when sample solutions of lignin model compounds containing the …
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Funktionsbasierte Isolierung von Subproteomen mit trifunktionellen Fangverbindungen
… capture compounds™, followed by mass spectrometric analysis, is a relatively new, promising technology for proteomic research. Particularly for analysis of effects and side effects of drugs or plant protection agents, as well as for the molecular biological basic research, the …
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Novel Mass Spectrometric and Sampling Strategies for Investigating Neuropeptide Processing and Distribution
Direct mass spectrometric analysis, combined with knowledge of expressed genes, often provides enough information to identify peptides, to determine new processing pathways, and to assess genetic variations. In some instances, however, alternative sampling approaches such as microseparation with …
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The Role of Gastrointestinal Microflora in the Metabolism and Toxicity of Trichothecene Mycotoxins
… Gas chromatographic and gas chromatography/mass spectrometric analysis of the extracts demonstrated that all three toxins were biotransformed to a variety of deacylated, deepoxy products including: deepoxy deoxynivalenol (DOM-1), deepoxy monoacetoxyscirpenol (DE MAS), deepoxy scirpentriol (DE …
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Proteolysis of mammary secretion proteins during involution of bovine mammary gland
… compared to d 7 postcalving. Immunoblot analysis showed that a number of peptides observed on d 7, 14 and 21 of involution were generated from $\alpha$s-casein, $\beta$-casein, $\kappa$-casein, or lactoferrin. Four peptides with apparent molecular weights ranging from 8 to 13 kDa were …
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