Si-Young Park

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Kyphoplasty is advantageous over vertebroplasty in terms of better kyphosis correction and diminished risk of cement extravasations. Literature described cement leakage causing neurological injury mainly after vertebroplasty procedure; only a few case reports show cement leakage with kyphoplasty without neurological injury or proper cause of leakage. We(More)
—This is the first report of a Si/SiGe resonant inter-band tunneling diodes (RITDs) on silicon substrates grown by the chemical vapor deposition process. The nominal RITD structure forms two quantum wells created by sharp δ-doping planes which provide for a resonant tunneling condition through the intrinsic spacer. The vapor phase doping technique was used(More)
—This letter presents the room-temperature high-frequency operation of Si/SiGe-based resonant interband tunnel diodes that were fabricated by low-temperature molecular beam epitaxy. The resulting devices show a resistive cutoff frequency f r0 of 20.2 GHz with a peak current density of 218 kA/cm 2 , a speed index of 35.9 mV/ps, and a peak-to-valley current(More)
Most Korean blue-collar workers are taking government-mandated medical screening periodically. The periodic neurobehavioral test provides a great chance to evaluate the functional change of the central nervous system. To utilize periodic neurobehavioral tests effectively, the reliability of currently used neurobehavioral tests needs to be evaluated.(More)
BACKGROUND It is well-known that there is a close relationship between metabolic syndrome (MetS) and microalbuminuria. However, some recent studies have found that even normal range albuminuria was associated with MetS and cardiometabolic risk factors. The purpose of this study is to analyze the relationship between MetS and normal range albuminuria and to(More)
Lumbar spinal fusions have been performed for spinal stability, pain relief and improved function in spinal stenosis, scoliosis, spinal fractures, infectious conditions and other lumbar spinal problems. The success of lumbar spinal fusion depends on multifactors, such as types of bone graft materials, levels and numbers of fusion, spinal instrumentation,(More)
—Functional robustness is one of the primary challenges for embedded memories as voltage levels are scaled below 1 V. A low-power high-speed tunneling SRAM (TSRAM) memory array including sense amplifiers and pre-charge circuit blocks operating at 0.5 V is designed and simulated using available MOSIS CMOS 90 nm product design kit coupled with VerilogA models(More)
—High-definition metal–oxide–metal (MOM) het-erojunction nanowires in the Au–NiO–Au system have been synthesized using a template-based method. These nanowires are 70 nm in diameter and 7 m in total length, with a 100 to 300 nm wide NiO segment sandwiched between the Au nanowires axially. Detailed electron-microscopy characterization studies of these(More)
BACKGROUND Colonic neoplasm is associated with western diet intake and physical inactivity. These life styles are also risk factors for dyslipidemia and metabolic syndrome. The aim of this study was to evaluate the association between dyslipidemia and the prevalence of colon polyps including colon adenoma as a precancerous lesion of colonic neoplasms. (More)
  • Sung-Yong Chung, Si-Young Park, Jeffrey W Daulton, Ronghua Yu, Paul R Berger, Phillip E Thompson +2 others
  • 2006
Si-based resonant interband tunnel diodes (RITD) were monolithically integrated with Si/SiGe heterojunction bipolar transistors (HBT) on silicon substrates effectively creating a 3-terminal negative differential resistance (NDR) device. We demonstrate that the room temperature NDR in the I C –V EC characteristics under common emitter configuration can be(More)