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Search Results: 1 - 10 of 25739 matches for " Kim Young "
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A Case of Right Paratracheal Ectopic Thyroid, Mimicking Metastasis on CT and 18F-FDG PET CT  [PDF]
Su Young Kim
Open Journal of Medical Imaging (OJMI) , 2013, DOI: 10.4236/ojmi.2013.33012

Mediastinal ectopic thyroid is quite rare, occurring in less than 1% of all ectopic thyroids. Frequent location of mediastinal ectopic thyroid in reported cases is anterosuperior mediastinum. CT findings of ectopic thyroid can be various and are dependent on several factors, such as its iodine content, the extent of tissue degeneration, and the presence of colloid cysts. This is a case of right paratracheal ectopic thyroid with nodular hyperplasia, mimicking metastatic nodal mass on both CT and 18F-FDG PET CT in a patient with colon cancer.

Behavior of a Scale Factor for Wiener Integrals and a Fourier Stieltjes Transform on the Wiener Space  [PDF]
Young Sik Kim
Applied Mathematics (AM) , 2018, DOI: 10.4236/am.2018.95035
Abstract: The purpose of this paper is to investigate the behavior of a Wiener integral along the curve C of the scale factor ρ > 0 for the Wiener integral ∫C0[0,T]F(ρx)dm(x) about the function \"\" defined on the Wiener space C0[0,T], where θ(t,u) is a Fourier-Stieltjes transform of a complex Borel measure.
A 10:1 Unequal Gysel Power Divider Using a Capacitive Loaded Transmission Line
Young Kim
PIER Letters , 2012, DOI: 10.2528/PIERL12030104
Abstract: This paper proposes a 10:1 unequal Gysel power divider using a capacitive loaded transmission line (CLTL). For obtaining a high dividing ratio of divider, the CLTL is proposed to realize a low characteristic impedance line below 10 Ω. A design method using a CLTL which consists of a small transmission line with shunt open stub at periodic intervals is newly suggested for power divider with the high power division ratio. For the validation of the CLTL power divider, the high dividing ratio of the fabricated Gysel divider is measured at a center frequency of 1 GHz. The measured performances are in good agreements with simulation results.
Enhanced Iontophoretic Delivery of Magnesium Ascorbyl 2-Phosphate and Sodium Fluorescein to Hairless and Hairy Mouse Skin  [PDF]
Min Young Kang, Young Kwan Sung, Moonkyu Kim, Jung Chul Kim, Insook Han, Su Hee Kim
Journal of Cosmetics, Dermatological Sciences and Applications (JCDSA) , 2012, DOI: 10.4236/jcdsa.2012.24054

We recently reported that L-ascorbic acid 2-phosphate (AP) stimulates the growth of human dermal papilla (DP) cells, induces secretion of IGF-1 from the DP cells to promote hair shafts elongation in cultured human hair follicles, and triggers early progression from the telogen to anagen phase in mice. Since the magnesium salt of AP (APMg) is a highly hydrophilic ionic molecule, it is not easy to deliver this reagent to the skin or hair follicles by topical application alone. In order to enhance skin penetration of APMg without changing any molecular properties, a non-invasive iontophoretic delivery method was introduced. Iontophoresis of the negatively charged APMg under the electrode bearing same charge (cathode) significantly enhanced the in vitro penetration of APMg into a Franz cell equipped with mouse dorsal skin. In contrast, iontophoretic movement with the anode inhibited APMg penetration achieved with passive diffusion alone. The effect of iontophoresis on enhancing the penetration of APMg was also found to be much higher in the skin of hairy mice (3 - 8 times) compared to hairless mice (1.5 - 2.5 times). These findings indicated that iontophoretic movement induced the transfollicular pathway more strongly and effectively than the transdermal pathway. This phenomena was also demonstrated by the in vivo iontophoretic delivery of sodium fluorescein using hairy and hairless mice. The degree of iontophoretic enhancement during APMg penetration was also dependent on various conditions such as current density and application duration.

Paraplegia by Acute Cervical Disc Herniation after Shoulder Arthroscopic Surgery in Beach-Chair Position  [PDF]
Hye Young Kim, Gang Han Jung
Open Journal of Anesthesiology (OJAnes) , 2018, DOI: 10.4236/ojanes.2018.811028
Abstract: Paraplegia after non-cervical spine surgery under general anesthesia is a rare devastating postoperative complication [1]. A patient with shoulder pain was scheduled for shoulder arthroscopy due to rotator cuff repair. Arthroscopic shoulder surgery was performed with the patient in the beach-chair. Postoperatively, patients complained the weakness of both lower leg and marked numbness and tingling in the both arms. MRI showed a herniated intervertebral disc between C6 and C7 with spinal cord compression. Despite urgent discectomy, the patient remained dysesthesia of both upper extremities for 6 months. The purpose of this report is to introduce our case with a paraplegia observed after arthroscopic shoulder surgery in beach-chair position because of acute cervical herniation.
Endurance Analysis of Automotive Vehicle’s Door W/H System Using Finite Element Analysis  [PDF]
Byeong-Sam Kim, Kyoungwoo Park, Young-Woo Kim
Journal of Software Engineering and Applications (JSEA) , 2009, DOI: 10.4236/jsea.2009.25050
Abstract: In the automotive electronics industry, demand for low-cost, high strength-to in-service performance for electronic components continues to drive the development of vehicles’ door Wiring Harness (W/H) system for new applications. The problem of the fatigue strength estimation of materials or components containing natural defects, inclusions or in homogeneities is of great importance from both a scientific and industrial point of view. This article gives some insight into the dimensioning process, with special focusing on fatigue analysis of W/H in a vehicle’s door structures. An en-durance life prediction of door W/H was calculated using finite element analyses. Endurance test data for slim test specimens were compared with the predicted fatigue life for verification. The final life expectancy of the component combines the effects of these microstructural features with the complex stress state arising from the combined service loading and residual stresses.
Acute Calcific Tendinitis of the Flexor Digitorum Superficialis of the Finger: A Case Report  [PDF]
Young Sung Kim, Ho Min Lee, Jong Pil Kim
Open Journal of Orthopedics (OJO) , 2014, DOI: 10.4236/ojo.2014.43008
Abstract: Acute calcific tendinitis of the shoulder is a well-known condition, but it is rare in the hand or finger. It is often misdiagnosed when it occurs outside the shoulder. We report an unusual case of acute calcific tendinitis of the flexor digitorum superficialis insertion of the 4th finger in a young female martial art athlete after minor trauma history, and discuss with a review of the literature.
Dirac Coupled Channel Analyses of Proton Inelastic Scatterings from s-d Shell Nuclei  [PDF]
Sugie Shim, Moon-Won Kim, Young-You Kim
Journal of Applied Mathematics and Physics (JAMP) , 2015, DOI: 10.4236/jamp.2015.34056

Proton inelastic scatterings from several s-d shell nuclei are analyzed using optical potential model and collective model in Dirac coupled channel formalism. The optical potential parameters obtained phenomenologically for the scatterings from the s-d shell nuclei are compared with each other for systematic Dirac analysis. Dirac equations are reduced to the second-order differential equations in order to obtain the Schroedinger equivalent effective central and spin-orbit optical potentials, and the surface-peaked phenomena are observed at the real effective central potentials for the scatterings from 22Ne, 20Ne and 24Mg. By analyzing the obtained effective spin-orbit potentials, it is confirmed that the spin-orbit interaction is a surface-peaked interaction. The first-order rotational collective models are used to describe the low-lying excited states of the ground state rotational bands in the s-d shell deformed nuclei, and the obtained deformation parameters are analyzed by comparing with each other, and compared with those obtained by using the nonrelativistic calculations. The obtained deformation parameters of Dirac phenomenological calculations for the s-d shell nuclei are found to agree pretty well with those of the nonrelativistic calculations using the same Woods-Saxon potential shape, even though the theoretical bases are quite different.

Long-Term Patient-Aspect Outcomes of the Single-Port Laparoscopic Cholecystectomy  [PDF]
Ju Yeon Kim, Young Hoon Roh, Minchan Kim
Open Journal of Gastroenterology (OJGas) , 2018, DOI: 10.4236/ojgas.2018.86027
Abstract: Background: Single port laparoscopic cholecystectomy (SPLC) is a widely performed advanced technique in laparoscopic surgery which has many benefits compare to conventional three port laparoscopic cholecystectomy (TPLC). The purpose of this study was to compare the patients’ satisfaction of SPLC and TPLC after one year of operation by using questionnaire which not only objective factors such as results of operation and hospital days but also subjective factor such as social and cosmetic quality of life. Materials and Methods: This study analyzed the data of 74 patients (SPLC = 42, TPLC = 32) who underwent the laparoscopic cholecystectomy between March and July 2013. The patients were asked to complete a patient-assessment questionnaire measuring the postoperative social and cosmetic quality-of-life values at the 12-month mark. Results: Statistically significant differences in the age, sex distribution, and body mass index are absent between the two groups. All the average scores of the different parameters of the social-activity aspect—satisfaction with physical condition, limitation of nutrition, stamina, postoperative pain level, returning to social life, impairment of social life, degree of complications, and cost-effectiveness of the surgery—are not statistically significant in both groups. Alternatively, all the results of the cosmetic aspect—scar influence on charms (p < 0.001), satisfaction regarding scar appearance (p = 0.015), and patient’s score of scars (p < 0.001)—show statistically significant differences. Conclusion: The SPLC is a safe and an attractive approach regarding the patients of this study. It offers a more effective cosmetic result that may be conveyed by a greater patient satisfaction.
Effect of Silane Coupling Agent on the Flexural Property of Glass Fiber Reinforced Composite Film  [PDF]
Hye-Hyun Kim, Si-Young Kim, Dae-Hee Kim, Chae-Young Oh, Nam-Ju Jo
Journal of Materials Science and Chemical Engineering (MSCE) , 2014, DOI: 10.4236/msce.2014.210006

Transparent glass fiber reinforced composites films ware fabricated by UV light induced chemical crosslinking of composite materials consisting of glass fiber and UV curable resin in film state. In order to apply film to flexible device, excellent flexural property is required, then the delamination should not occurred between glass fiber and UV curable resin when film is bent. To minimize delamination and improve the interfacial adhesion at interface between glass fiber and UV curable resin, the γ-aminopropyl triethoxy silane and γ-glycid oxypropyl trimethoxy silane were applied for the surface treatment of glass fibers. Silanization of glass fiber surface was checked by scanning electron microscopy and the degree of delamination of composite film was confirmed through the bending test, ASTEM290-96a, used by haze meter.

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