Search results for: Sung-Gun Park

Items from 1 to 11 out of 11 results

article

Applications and advancements of FT‐ICR‐MS for interactome studies

Juan D. Chavez, Sung‐Gun Park, Jared P. Mohr, James E. Bruce

Mass Spectrometry Reviews > 41 > 2 > 248 - 261

The set of all intra‐ and intermolecular interactions, collectively known as the interactome, is currently an unmet challenge for any analytical method, but if measured, could provide unparalleled insight on molecular function in living systems. Developments and applications of chemical cross‐linking and high‐performance mass spectrometry technologies are beginning to reveal details on how proteins...

article

Characterization of Harmonic Signal Acquisition with Parallel Dipole and Multipole Detectors

Sung-Gun Park, Gordon A. Anderson, James E. Bruce

Journal of The American Society for Mass Spectrometry > 2018 > 29 > 7 > 1394-1402

Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) is a powerful instrument for the study of complex biological samples due to its high resolution and mass measurement accuracy. However, the relatively long signal acquisition periods needed to achieve high resolution can serve to limit applications of FTICR-MS. The use of multiple pairs of detector electrodes enables detection...

article

Parallel Spectral Acquisition with Orthogonal ICR Cells

Sung-Gun Park, Gordon A. Anderson, James E. Bruce

Journal of The American Society for Mass Spectrometry > 2017 > 28 > 3 > 515-524

FT-based high performance mass analyzers yield increased resolving power and mass measurement accuracy, yet require increased duration of signal acquisition that can limit many applications. The implementation of stronger magnetic fields, multiple detection electrodes for harmonic signal detection, and an array of multiple mass analyzers arranged along the magnetic field axis have been used to decrease...

article

Operational modal analysis on the hydroelastic response of a segmented container carrier model under oblique waves

Yooil Kim, Sung-Gun Park, Byoung-Hoon Kim, In-Gyu Ahn

Ocean Engineering > 2016 > 127 > C > 357-367

Both vertical and torsional mode shapes of a segmented container carrier model towed in a model basin are estimated using the operational modal analysis. The operational modal analysis targets to identify the modal properties of a structure using measured data collected during the operation without any information about the excitation. The proper orthogonal decomposition, which is also known as Karhunen–Loeve...

article

Wet damping estimation of the scaled segmented hull model using the random decrement technique

Yooil Kim, Sung-Gun Park

Ocean Engineering > 2014 > 75 > Complete > 71-80

Damping is one of the most uncertain factors in structural dynamic problems, and plays a very important role in resonance phenomena such as springing. This paper presents the wet damping estimation of a segmented hull model using a random decrement technique together with continuous wavelet transform. The 16 sea states were grouped together based on the speed of the ship to determine the possible...

article

Ambient laser ablation sampling for capillary electrophoresis mass spectrometry

Sung‐Gun Park, Kermit K. Murray

Rapid Communications in Mass Spectrometry > 27 > 15 > 1673 - 1680

RATIONALEAmbient laser ablation with mass spectrometric detection is a powerful method for direct analysis of biological samples in their native environment. Capillary electrophoresis (CE) can separate complex mixtures of biological molecules prior to mass spectrometry (MS) analysis and an ambient sampling interface for CE/MS will allow the detection of minor components. METHODSAn infrared (IR) laser...

article

Infrared laser ablation sample transfer for on‐line liquid chromatography electrospray ionization mass spectrometry

Sung‐Gun Park, Kermit K. Murray

Journal of Mass Spectrometry > 47 > 10 > 1322 - 1326

We have demonstrated an on‐line laser ablation sampling system and coupling of the system to liquid chromatography (LC) using an infrared (IR) laser to ablate and transfer materials into a flowing solvent stream. With this approach, samples are deposited on a microscope slide mounted on a translation stage and ablated in transmission geometry using a pulsed mid‐IR laser. The ablated material is captured...

article

Infrared Laser Ablation Sample Transfer for MALDI and Electrospray

Sung-Gun Park, Kermit King Murray

Journal of The American Society for Mass Spectrometry > 2011 > 22 > 8 > 1352-1362

We have used an infrared laser to ablate materials under ambient conditions that were captured in solvent droplets. The droplets were either deposited on a MALDI target for off-line analysis by MALDI time-of-flight mass spectrometry or flow-injected into a nanoelectrospray source of an ion trap mass spectrometer. An infrared optical parametric oscillator (OPO) laser system at 2.94 μm wavelength and...

article

Investigation of the interaction between arsenic species and thiols via electrospray ionization tandem mass spectrometry

Sung-Gun Park, David J. Butcher

Microchemical Journal > 2010 > 95 > 1 > 57-66

Arsenic species have been known to participate in a number of chemical and biological reactions, including oxidation–reduction reactions, acid–base reactions, covalent interactions, and methylation–demethylation reactions because of the element's multiple and interconvertible oxidation states. Little is known about the structure or bonding behavior between arsenic species and thiolcontaining biomolecules...

article

Detoxification of Cytotoxic Alachlor by Glutathione: Characterization of Conjugated Adducts by Electrospray Ionization Tandem Mass Spectrometry

Sung-Gun Park, Hua Jin, Daniel T. Thangadurai, Young-Jai Yoo, more

Journal of Agricultural and Food Chemistry > 2009 > 57 > 20 > 9838 - 9847

article

Structural characterization of alachlor complexes with transition metal ions by electrospray ionization tandem mass spectrometry

Sung-Gun Park, Shengyun Cui, Sung-Chan Jo, Sangho Nam, more

Microchemical Journal > 2007 > 86 > 2 > 248-256

Electrospray ionization mass (ESI-MS) spectrometry was used to investigate the nature of metal complexes of alachlor and their dissociations on activation. Ions of the first row transition metal series were employed to react with alachlor and the products were subjected to collision-induced dissociation (CID) for further structural characterization. The formation of diverse complex ions including...

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ABLATION (2)
AMBIENT (2)
ELECTROSPRAY IONIZATION (2)
INFRARED (2)
MASS SPECTROMETRY (2)
RANDOM DECREMENT TECHNIQUE (2)
SPRINGING (2)
WHIPPING (2)
ALACHLOR (1)
ARRAY (1)
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ARSENIC (1)
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CONTINUOUS WAVELET TRANSFORM (1)
CROSS‐LINKING (1)
DAMPING RATIO (1)
ELECTROSPRAY (1)
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FTMS (1)
FT‐ICR (1)
HARMONIC FREQUENCIES (1)
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INTERACTOME (1)
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PHYTOREMEDIATION (1)
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