Search Results - "Andre Venter"

Protein analysis by desorption electrospray ionization mass spectrometry by Venter, Andre R

“…This review presents progress made in the ambient analysis of proteins, in particular by desorption electrospray ionization-mass spectrometry (DESI-MS)…”
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Hydrogen Is the Superior Nebulization Gas for Desorption and Electrospray Ionization by Binny, Bincy, Joseph, George, Venter, Andre R.

“…A previous comparative study between helium and nitrogen as nebulizing and desolvation gases in electrospray ionization (ESI) and desorption electrospray…”
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Effects of Amino Acid Additives on Protein Stability during Electrothermal Supercharging in ESI-MS by Javanshad, Roshan, Panth, Rajendra, Venter, Andre R

“…The surprising formation of highly charged protein ions from aqueous ammonium bicarbonate solution is a fascinating phenomenon referred to as electrothermal…”
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Comparing the Effects of Additives on Protein Analysis Between Desorption Electrospray (DESI) and Electrospray Ionization (ESI) by Honarvar, Elahe, Venter, Andre R.

“…It is frequently said that DESI-MS follows a similar ionization mechanism as ESI because of similarities usually observed in their respective mass spectra…”
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Ammonium Bicarbonate Addition Improves the Detection of Proteins by Desorption Electrospray Ionization Mass Spectrometry by Honarvar, Elahe, Venter, Andre R.

“…The analysis of protein by desorption electrospray ionization mass spectrometry (DESI-MS) is considered impractical due to a mass-dependent loss in sensitivity…”
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Mechanisms of Real-Time, Proximal Sample Processing during Ambient Ionization Mass Spectrometry by Venter, Andre R, Douglass, Kevin A, Shelley, Jacob T, Hasman, Gregg, Honarvar, Elahe

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Addition of Serine Enhances Protein Analysis by DESI-MS by Javanshad, Roshan, Honarvar, Elahe, Venter, Andre R.

“…Previous studies have suggested that the loss in sensitivity of DESI-MS for large molecules such as proteins is due to the poor dissolution during the short…”
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Zolpidem and restoration of consciousness--fact or fiction? by Venter, André

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Investigating the Role of Adducts in Protein Supercharging with Sulfolane by Douglass, Kevin Aart, Venter, Andre R.

“…The supercharging effect of sulfolane on cytochrome c (cyt c ) during electrospray ionization mass spectrometry (ESI-MS) in the absence of conformational…”
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Analysis of histidine-tagged recombinant proteins from nickel and copper coated surfaces by direct electrospray ionization and desorption electrospray ionization mass spectrometry by Javanshad, Roshan, Taylor, Christopher James, Delavari, Niusha, Barkman, Todd J, Stull, Frederick, Venter, Andre R

“…Purification of recombinant proteins is a necessary step for functional or structural studies and other applications. Immobilized metal affinity chromatography…”
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Delayed Desorption Improves Protein Analysis by Desorption Electrospray Ionization Mass Spectrometry by Maser, Tara L, Honarvar, Elahe, Venter, Andre R

“…Protein analysis by desorption electrospray ionization mass spectrometry (DESI-MS) is limited and often accompanied by a mass-dependent loss in sensitivity as…”
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Protein analysis by desorption electrospray ionization mass spectrometry and related methods by Douglass, Kevin Aart, Venter, Andre R.

“…Desorption electrospray ionization mass spectrometry (DESI‐MS) requires little to no sample preparation and has been successfully applied to the study of…”
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The Addition of Polar Organic Solvent Vapors During the Analysis of Proteins by DESI-MS by Javanshad, Roshan, Maser, Tara L., Honarvar, Elahe, Venter, Andre R.

“…Exposure of electrospray droplets to organic vapors was shown to dramatically reduce alkali-metal adduction on protein ions and shift protein charge states…”
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African Child Neurology Association (ACNA): From Cape to Cairo by Venter, André

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Extractive electrospray ionization for direct analysis of undiluted urine, milk and other complex mixtures without sample preparation by Chen, Huanwen, Venter, Andre, Cooks, R Graham

“…On-line droplet-droplet extraction occurs when a sample spray intersects a reagent electrospray; this allows continuous analysis of trace amounts of compounds…”
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Characterization of Bi-doped ZnO nanorods prepared by chemical bath deposition method by Ahmed, Mustafa, Coetsee, Liza, Goosen, W.E., Urgessa, Z.N., Botha, J.R., Venter, André

“…This study investigates the effect of bismuth (Bi) doping on the structural, optical and electrical properties of ZnO nanorods prepared using a chemical bath…”
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A DLTS analysis of alpha particle irradiated commercial 4H-SiC Schottky barrier diodes by Ahmed, Mustafa A. M., Auret, F. D., Nel, J. M., Venter, Andrè

“…4H-SiC Schottky barrier diodes (SBDs) were exposed to 5.4 MeV alpha particles with fluences of 2.55× 10 11  cm −2 , 5.11 × 10 11  cm −2 and 7.67 × 10 11  cm −2…”
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Droplet Dynamics and Ionization Mechanisms in Desorption Electrospray Ionization Mass Spectrometry by Venter, Andre, Sojka, Paul E, Cooks, R. Graham

“…A droplet pickup and other mechanisms have been suggested for the ionization of biomolecules like peptides and proteins by desorption electrospray ionization…”
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Reaction Kinetics and Efficiencies for the Hydroxyl and Sulfate Radical Based Oxidation of Artificial Sweeteners in Water by Toth, Janie E, Rickman, Kimberly A, Venter, Andre R, Kiddle, James J, Mezyk, Stephen P

“…Over the past several decades, the increased use of artificial sweeteners as dietary supplements has resulted in rising concentrations of these contaminants…”
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Spray desorption collection: an alternative to swabbing for pharmaceutical cleaning validation by Jain, Shashank, Heiser, Amy, Venter, Andre R

“…Spray Desorption Collection (SDC) allows for much larger areas of surfaces to be sampled compared to traditional swabbing techniques, providing a valuable…”
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