Sang Ho Kim

Kongju National University, Gongju, Chungcheongnam-do, South Korea

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Publications (141)236.65 Total impact

  • No preview · Article · Oct 2015
  • In Kyu Choi · Si Myeong Kim · Sang Ho Kim

    No preview · Article · Oct 2015
  • Anil Kumar Yadav · Sang Ho Kim · Sun Chul Kang

    No preview · Article · Jul 2015

  • No preview · Article · Jul 2015 · Bulletin of the Korean Chemical Society
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    ABSTRACT: Acetic acid has been shown to promote glycogen replenishment in skeletal muscle during exercise training. In this study, we investigated the effects of acetic acid on endurance capacity and muscle oxidative metabolism in the exercise training using in vivo mice model. In exercised mice, acetic acid induced a significant increase in endurance capacity accompanying a reduction in visceral adipose depots. Serum levels of non-esterified fatty acid and urea nitrogen were significantly lower in acetic acid-fed mice in the exercised mice. Importantly, in the mice, acetic acid significantly increased the muscle expression of key enzymes involved in fatty acid oxidation and glycolytic-to-oxidative fiber-type transformation. Taken together, these findings suggest that acetic acid improves endurance exercise capacity by promoting muscle oxidative properties, in part through the AMPK-mediated fatty acid oxidation and provide an important basis for the application of acetic acid as a major component of novel ergogenic aids.
    No preview · Article · May 2015 · Bioscience Biotechnology and Biochemistry
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    ABSTRACT: Nonconvulsive status epilepticus has become an important issue in modern neurology and epileptology. This is based on difficulty in definitively elucidating the condition and its various clinical phenomena and on our inadequate insight into the intrinsic pathophysiological processes. Despite nonconvulsive status epilepticus being a situation that requires immediate treatment, this disorder may not be appreciated as the cause of mental status impairment. Although the pathophysiology of nonconvulsive status epilepticus remains unknown, this disorder is thought to lead to neuronal damage, so its identification and treatment are important. Nonconvulsive status epilepticus should be considered in the differential diagnosis of patients with liver cirrhosis presenting an altered mental status. We report a case of a 52-year-old male with liver cirrhosis presenting an altered mental status. He was initially diagnosed with hepatic encephalopathy but ultimately diagnosed with nonconvulsive status epilepticus by electroencephalogram.
    Full-text · Article · Apr 2015

  • No preview · Article · Mar 2015
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    ABSTRACT: Purpose: Transient Horner's syndrome is an uncommon complication of epidural anesthesia, though its exact incidence in thoracic epidural anesthesia is not clear. Therefore, this study prospectively evaluated the incidence of Horner's syndrome after thoracic epidural anesthesia for mastectomy. Methods: Patients scheduled for mastectomy, with or without breast reconstruction, were enrolled in this prospective observational study from September 2010 to December 2013. Intraoperative thoracic epidural anesthesia was established using 0.375% or 0.5% ropivacaine 15 mL with thoracic epidural analgesia continued postoperatively with a continuous infusion of 0.15% ropivacaine 2 mL·hr(-1) with fentanyl 8 μg·hr(-1). Signs of Horner's syndrome (miosis, ptosis, and hyperemia) were assessed at one and two hours as well as one, two, and three days postoperatively. Results: Thoracic epidural anesthesia was successful in 439 patients, with six (1.4%) of these patients acquiring Horner's syndrome. All signs of Horner's syndrome resolved gradually within 180 min of discontinuing the epidural infusion. In one patient with Horner's syndrome, a radiographic contrast injection confirmed that the drug had spread to the cervical epidural level. Conclusion: The incidence of Horner's syndrome following thoracic epidural anesthesia and continuous thoracic epidural analgesia for mastectomy was 1.4%. The mechanism was consistent with cephalic spread of the epidural local anesthetic. This trial was registered at:, number: NCT02130739.
    No preview · Article · Jan 2015 · Canadian Journal of Anaesthesia
  • In Kyu Choi · Su Young Lee · Sang Ho Kim

    No preview · Article · Dec 2014
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    ABSTRACT: This paper focuses on aerodynamic and inertial modeling of the propeller for its applications in flight dynamics analyses of a propeller-driven airplane. Unsteady aerodynamic and inertial loads generated by the propeller are formulated using the blade element method, where the local velocity and acceleration vectors for each blade element are obtained from exact kinematic relations for general maneuvering conditions. Vortex theory is applied to obtain the flow velocities induced by the propeller wake, which are used in the computation of the aerodynamic forces and moments generated by the propeller and other aerodynamic surfaces. The vortex lattice method is adopted to obtain the induced velocity over the wing and empennage components and the related influence coefficients are computed, taking into account the propeller induced velocities by tracing the wake trajectory trailing from each of the propeller blades. Aerodynamic forces and moments of the fuselage and other aerodynamic surfaces are computed by using the wind tunnel database and applying strip theory to incorporate viscous flow effects. The propeller models proposed in this paper are applied to predict isolated propeller performances under steady flight conditions. Trimmed level forward and turn flights are analyzed to investigate the effects of the propeller on the flight characteristics of a propeller-driven light-sports airplane. Flight test results for a series of maneuvering flights using a scaled model are employed to run the flight dynamic analysis program for the proposed propeller models. The simulations are compared with the flight test results to validate the usefulness of the approach. The resultant good correlations between the two data sets shows the propeller models proposed in this paper can predict flight characteristics with good accuracy.
    No preview · Article · Dec 2014
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    ABSTRACT: This paper is the second in a series and aims to build a high-fidelity mathematical model for a propeller-driven airplane using the propeller's aerodynamics and inertial models, as developed in the first paper. It focuses on aerodynamic models for the fuselage, the main wing, and the stabilizers under the influence of the wake trailed from the propeller. For this, application of the vortex lattice method is proposed to reflect the propeller's wake effect on those aerodynamic surfaces. By considering the maneuvering flight states and the flow field generated by the propeller wake, the induced velocity at any point on the aerodynamic surfaces can be computed for general flight conditions. Thus, strip theory is well suited to predict the distribution of air loads over wing components and the viscous flow effect can be duly considered using the 2D aerodynamic coefficients for the airfoils used in each wing. These approaches are implemented in building a high-fidelity mathematical model for a propeller-driven airplane. Flight dynamic analysis modules for the trim, linearization, and simulation analyses were developed using the proposed techniques. The flight test results for a series of maneuvering flights with a scaled model were used for comparison with those obtained using the flight dynamics analysis modules to validate the usefulness of the present approaches. The resulting good correlations between the two data sets demonstrate that the flight characteristics of the propeller-driven airplane can be analyzed effectively through the integrated framework with the propeller and airframe aerodynamic models proposed in this study.
    No preview · Article · Dec 2014
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    Preview · Article · Dec 2014 · Korean journal of anesthesiology
  • Su Young Lee · Sang Ho Kim
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    ABSTRACT: The purpose of this study is to investigate the friction and wear behaviors of CrN, TiN, CrAlN, and TiAlN coated onto SKD61 for application to Al 7000 series extrusion dies. On the wear test, the experimental parameters are the load and the counter material's temperature. The results showed that the friction coefficient increased with load but decreased with the counter material's temperature, and the friction coefficients of CrN and CrAlN were lower than the friction coefficients of TiAlN and TiN, especially at a higher temperature. The wear track with different coatings identified different wear behaviors; the wear behavior of CrAlN was found to be abrasive, but the wear behavior of TiN, CrN, and TiAlN was adhesive. Therefore, CrAlN showed the least wear loss with a lower friction coefficient and less adhesion with counter materials at the highest range of wear load and temperature. This resulted in the easy formation of aluminum oxide in the wear track and less Al adhesion; moreover during the hard second phase, AlN dispersed in the film during deposition.
    No preview · Article · Dec 2014 · Journal of Nanoscience and Nanotechnology
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    ABSTRACT: Transverse abdominis plane (TAP) block can be recommended as a multimodal method to reduce postoperative pain in laparoscopic abdominal surgery. However, it is unclear whether TAP block following local anesthetic infiltration is effective. We planned this study to evaluate the effectiveness of the latter technique in laparoscopic totally extraperitoneal hernia repair (TEP). We randomly divided patients into two groups: the control group (n = 37) and TAP group (n = 37). Following the induction of general anesthesia, as a preemptive method, all of the patients were subjected to local anesthetic infiltration at the trocar sites, and the TAP group was subjected to ultrasound-guided bilateral TAP block with 30 ml of 0.375% ropivacaine in addition before TEP. Pain was assessed in the recovery room and post-surgery at 4, 8, and 24 h. Additionally, during the postoperative 24 h, the total injected dose of analgesics and incidence of nausea were recorded. On arrival in the recovery room, the pain score of the TAP group (4.33 ± 1.83) was found to be significantly lower than that of the control group (5.73 ± 2.04). However, the pain score was not significantly different between the TAP group and control group at 4, 8, and 24 h post-surgery. The total amounts of analgesics used in the TAP group were significantly less than in the control group. No significant difference was found in the incidence of nausea between the two groups. TAP block following local infiltration had a clinical advantage only in the recovery room.
    Full-text · Article · Dec 2014 · Korean journal of anesthesiology
  • Su Young Lee · Sang Ho Kim
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    ABSTRACT: We investigated the characteristics of zinc oxide (ZnO) photoelectrodes grown by plasma enhanced chemical vapor deposition. ZnO has many advantages, such as high binding energy, breakdown strength, cohesion, hardness, and electron mobility. On the F-doped SnO2 (FTO) electrode, we deposited ZnO as a function of thickness, and we examined the thickness effect on the I–V, fill factor, open-circuit voltage, short-circuit current density, and especially the power conversion efficiency of the built in dye-sensitized solar cell. To study the thickness effect on the conduction and recombination of electrons in the ZnO electrode, we analyzed the alignment of grains, crystallinity, impedance, and cyclic I–V properties. The thickness of ZnO changed the electron diffusion length and recombination time. As a result, the maximum power conversion efficiency of 2.63% was obtained with a moderately thick (8.06 μm) ZnO.
    No preview · Article · Dec 2014 · Journal of Nanoscience and Nanotechnology
  • Seon-Cheol Moon · Sang Ho Kim
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    ABSTRACT: CrAlN film has advantages of stability and multifunctionality over the commercial TaN0.8. This study investigated the characteristics of CrAlN film deposited by radio frequency magnetron sputtering as a function of Al content after deposition heat treatment. With a 600 °C heat treatment and 20% Al content, the low temperature coefficient of resistance (−2670.6 ppm/k), high oxidation resistance, and thermal conductivity were acquired. This was found due to the high-density columnar NaCl structure with 20% Al and the recrystallization utilized by heat treatment.
    No preview · Article · Dec 2014 · Journal of Nanoscience and Nanotechnology
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    Sang Ho Kim · Rekha Jakhar · Sun Chul Kang
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    ABSTRACT: Mushrooms are known to complement chemotherapy and radiation therapy by countering the side effects of cancer. Recently, there has been great interest in isolation of novel bioactive compounds from mushrooms due to their numerous health beneficial effects. Chemically water-extractable polysaccharide (MFKF-AP1β), with a molecular weight of 12 kDa, was isolated from fruiting bodies of mushroom Fomes fomentarius. In this research, we investigated the anti-tumor effects of MFKF-AP1β on human lung carcinoma A549 cells. Results showed that MFKF-AP1β markedly inhibited A549 cell growth in a dose-dependent manner based on the amount of lactate dehydrogenase (LDH) released and morphological alterations. In addition, MFKF-AP1β induced cellular apoptosis by causing single-stranded DNA breakage, as evidenced by apoptosis assay. Furthermore, MFKF-AP1β (25–100 μg/ml) significantly induced single-stranded DNA breakage in A549 cells, as shown by comet assay. Taken together, our results demonstrate that MFKF-AP1β has strong anti-tumor effects mediated through induction of apoptosis. Therefore, MFKF-AP1β could be useful in lung chemotherapy.
    Full-text · Article · Nov 2014 · Saudi Journal of Biological Sciences
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    ABSTRACT: For decades, popular culture has been enthralled with the possibility of robots that act and look like human. Walking, as one of the most important features of human, needs to be well implemented by humanoid robots. In order to perform stable robot gait, it is necessary to control the position of the Zero Moment Point (ZMP) of the robot. To calculate the ZMP, forces and moments under robot feet are important information to use. Thus, in this paper, we describe the development of a three-axis force/torque sensor to measure forces under robot feet in walking movement. The key point of this sensor is that it is very thin and light so as to not disturb the robots’ gait. It also has sufficient stiffness to support heavy load. The simple structure and low cost of this sensor are also attractive points. Finite element analysis results of the sensor revealed that it is adequate to be used under robot feet.
    Full-text · Conference Paper · Oct 2014
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    ABSTRACT: Background Neck and shoulder pain is fairly common among adolescents in Korea and results in significant health problem. The aims of this prospective study was to identify the effects of education, in terms of recognition of this issue and posture correction, on prevalence and severity of neck and shoulder pain in Korean adolescents. Methods A prospective, observational cohort design was used. The 912 students from two academic high schools in the city of Seoul were eligible for the current study and 887 completed this study. After a baseline cross-sectional survey, students listened to a lecture about cervical health, focusing on good posture, habits, and stretching exercises to protect the spine, and were encouraged by their teachers to keep the appropriate position. And follow-ups were conducted 3 months later, to evaluate the effect of education. Results The prevalence of neck and shoulder pain was decreased 19.5% (from 82.5 to 66.4%). The baseline mean usual and worst numeric rating scale were 19.9/100 (95% CI, 18.1-21.7) and 31.2/100 (95% CI, 28.7-33.2), respectively. On the follow-up survey, the mean usual and worst numeric rating scale were decreased significantly by 24.1 and 21.7%, respectively, compared with baseline (P < 0.01). Of the 570 students reporting neck and shoulder pain, 16.4% responded that they had experienced improvement during the 3 months. Conclusions Education; recognition of this issue and posture correction, for cervical health appeared to be effective in decreasing the prevalence and severity of neck and shoulder pain at a 3 month follow-up.
    Preview · Article · Sep 2014 · Korean journal of anesthesiology

  • No preview · Article · Aug 2014 · Journal of Korea Water Resources Association

Publication Stats

2k Citations
236.65 Total Impact Points


  • 2013-2015
    • Kongju National University
      • Department of Chemistry
      Gongju, Chungcheongnam-do, South Korea
  • 2010-2015
    • Dong-A University
      • • Department of Medicine
      • • Department of Neurology
      Busan, Busan, South Korea
  • 2008-2015
    • Soonchunhyang University
      • College of Medicine
      Onyang, Chungcheongnam-do, South Korea
    • Korea Advanced Nano Fab Center
      화성시, Gyeonggi-do, South Korea
  • 2004-2015
    • Sejong University
      • Department of Electronic Engineering
      Sŏul, Seoul, South Korea
    • Korea Advanced Institute of Science and Technology
      • Department of Aerospace Engineering
      Seoul, Seoul, South Korea
    • Kyushu University
      • Department of Clinical Chemistry and Laboratory Medicine
      Hukuoka, Fukuoka, Japan
  • 2014
    • Hanyang University
      • Division of Mechanical Engineering
      Sŏul, Seoul, South Korea
    • Konkuk University
      • Department of Aerospace Information Engineering
      Sŏul, Seoul, South Korea
  • 2007-2014
    • Daegu University
      • • Department of Biotechnology
      • • Department of Journalism and Mass Communication
      Daikyū, Daegu, South Korea
    • National Medical Center
      Sŏul, Seoul, South Korea
  • 2004-2014
    • Korea University of Technology and Education
      • Department of Energy, Materials and Chemical Engineering
      창녕읍, Gyeongsangnam-do, South Korea
  • 2009-2013
    • National Institute of Animal Science
      Sŏul, Seoul, South Korea
  • 2007-2013
    • Chonnam National University
      • • Department of Gastroenterology
      • • Department of Internal Medicine
      Gwangju, Gwangju, South Korea
  • 1996-2013
    • Catholic University of Korea
      • • Department of Pathology
      • • College of Medicine
      Sŏul, Seoul, South Korea
  • 2012
    • National University of Singapore
      • Department of Surgery
      Tumasik, Singapore
  • 2011
    • Seoul National University of Science and Technology
      Sŏul, Seoul, South Korea
  • 2005-2007
    • Kyungpook National University
      • Computer System Engineering
      Daikyū, Daegu, South Korea
    • Wonkwang University
      Riri, North Jeolla, South Korea
    • Chungbuk National University
      Chinsen, North Chungcheong, South Korea
  • 2001
    • Pukyong National University
      Busan, Busan, South Korea
  • 1998
    • Chonbuk National University
      Tsiuentcheou, North Jeolla, South Korea
  • 1994
    • University of Seoul
      Sŏul, Seoul, South Korea