9 results on '"Da Young Kang"'
Search Results
2. The Effects of Acculturative Stress on Career Attitude of Multicultural Adolescents: Mediation of school adjustment
- Author
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Da Young Kang and Hyunah Kang
- Subjects
General Medicine - Published
- 2022
3. Performance Evaluation of Newly Developed Korean Antimicrobial Susceptibility Testing Panels for MicroScan System Using Clinical Isolates from Teaching Hospitals in Korea
- Author
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Byeol Yi Park, Jun Sung Hong, Do Kyun Kim, Hyukmin Lee, Da Young Kang, Seok Hoon Jeong, and In-Ho Jang
- Subjects
medicine.medical_specialty ,evaluation ,business.industry ,Internal medicine ,lcsh:QR1-502 ,Medicine ,Antimicrobial susceptibility ,microscan, performance ,General Medicine ,business ,antimicrobial susceptibility ,lcsh:Microbiology - Abstract
Background: Antimicrobial resistant continues to pose a threat to public health. Therefore, rapid and accurate antimicrobial susceptibility testing is very important. The objectives of this study were to evaluate the performance of the MicroScan system (Beckman Coulter, USA) with newly developed Korean Antimicrobial Susceptibility Testing Panels (KSCM panels) for antimicrobial susceptibility testing (AST) against clinical isolates in South Korea.Methods: Three KSCM panels were designed in this study. For the performance evaluation, a total of 1,325 clinical isolates including 1,027 of Gram-negative bacilli and 298 Gram-positive cocci collected from eight general hospitals in South Korea were used. The results by KSCM panels were compared with those by conventional methods.Results: By KSCM-1 panel for Gram-positive cocci, the rates of categorical agreement (CA) were >90% in all the antimicrobials tested in this study. The rates of major error (ME) were also 90%, ME rates
- Published
- 2019
4. Synthesis of Antifungal Evaluation of 2H-[1,2,3]Triazolo[4,5-g]isoquinoline-4,9-diones
- Author
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Da Young Kang, Chung-Kyu Ryu, Sun Young Oh, and Soo Jung Choi
- Subjects
Antifungal ,chemistry.chemical_compound ,Stereochemistry ,Chemistry ,medicine.drug_class ,Drug Discovery ,medicine ,General Chemistry ,General Medicine ,Isoquinoline ,Antimicrobial ,In vitro - Abstract
2H-[1,2,3]Triazolo[4,5-g]isoquinoline-4,9-diones and 2H-[1,2,3]triazolo[4,5-g]quinoline-4,9-diones were synthesized and tested for in vitro antifungal activity against pathogenic fungi. Many of those synthesized showed potent antifungal activity. Compounds 3a, 3b, 3g, and 3h completely inhibited the growth of all fungal species tested at the MIC level of 0.8-12.5 µg/mL. The results suggest that 2H-[1,2,3]triazolo[4,5-g]isoquinoline-4,9-diones could be antifungal agents.
- Published
- 2014
5. Performance Evaluation of SENTiFIT 270 and FOB Gold Reagent for Detecting Fecal Occult Blood
- Author
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In-Ho Jang, Do Kyun Kim, Keonhan Kim, Seok Jeong, and Da Young Kang
- Subjects
linearity ,medicine.medical_specialty ,business.industry ,Colorectal cancer ,Fecal occult blood ,lcsh:QR1-502 ,sentifit 270-fob gold ,General Medicine ,medicine.disease ,occult blood ,Gastroenterology ,lcsh:Microbiology ,colon cancer ,Internal medicine ,Reagent ,medicine ,precision ,business - Abstract
Background: Fecal occult blood tests have been widely used to screen for colorectal cancer. SENTiFIT 270 (Sentinel diagnostics, Italy) is a fecal occult blood test with an immunochemical method that utilizes FOB Gold reagents. We evaluated the performance of SENTiFIT 270 using the FOB Gold reagent. In addition, FOB Gold was evaluated with the HITACHI 7180 (Hitachi Ltd., Japan).Methods: The precision and linearity of the SENTiFIT 270 was evaluated in accordance with applicable Clinical and Laboratory Standard Institute guidelines. The comparison study between SENTiFIT 270-FOB Gold and the OC-Sensor (Eiken chemical Co., Japan) was performed using stool specimens.Results: In the precision evaluation, the total precision of SENTiFIT 270-FOB Gold was 4.94% and 2.54% at high and low concentrations, respectively. The HITACHI 7180-FOB Gold had excellent precision of 4.60% and 2.09% at high and low concentrations, respectively. Linearity was also excellent for the SENTiFIT 270-FOB Gold and HITACHI 7180-FOB Gold at 0.9987 and 0.9986, respectively. The SENTITIF 270-FOB Gold showed excellent agreement with a kappa value of 0.830 and a concordance rate of 93.6%. The HITACHI 7180-FOB Gold showed high agreement with a kappa value of 0.832 and a concordance rate of 93.9%.Conclusion: The SENTiFIT 270-FOB Gold showed excellent performance in accuracy, linearity, and comparative inspection ability. (Ann Clin Microbiol 2019;22:29-34)
- Published
- 2019
6. Surgical-Orthodontic Treatment for Skeletal Class II Malocclusion With Vertical Maxillary Excess, Anterior Open Bite, and Transverse Maxillary Deficiency
- Author
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Chung Ju Hwang, Da Young Kang, Jung Yul Cha, and Sung Hwan Choi
- Subjects
Palatal Expansion Technique ,medicine.medical_treatment ,Bone Screws ,Osteotomy, Sagittal Split Ramus ,Vertical maxillary excess ,Orthognathic surgery ,Malocclusion, Angle Class II ,Osteotomy ,Genioplasty ,Young Adult ,Occlusion ,Maxilla ,medicine ,Humans ,Osteotomy, Le Fort ,Orthodontics ,Open bite ,business.industry ,Open Bite ,General Medicine ,medicine.disease ,Otorhinolaryngology ,Female ,Surgery ,Malocclusion ,business - Abstract
Nongrowing adult patients with skeletal open bite have been considered among the most difficult to treat. This case report describes the surgical-orthodontic treatment of a blind 20-year-old woman who presented with skeletal class II malocclusion with vertical maxillary excess, anterior open bite, and transverse maxillary deficiency.After the transverse maxillary deficiency was corrected with miniscrew-assisted rapid palatal expansion, Le Fort I osteotomy with anterior segmental osteotomy and bilateral sagittal split ramus osteotomy with advancement genioplasty were used to correct the vertical maxillary excess and the anterior open bite. The patient's facial appearance was markedly improved, and she achieved a functional and stable occlusion after these treatments.This case report demonstrates the efficiency of miniscrew-assisted rapid palatal expansion for a patient with transverse maxillary deficiency and the benefit of a team approach using effective orthodontic mechanics in orthognathic surgery to correct a severe dentofacial deformity.
- Published
- 2012
7. Different elution modes and field programming in gravitational field-flow fractionation
- Author
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Namgoo Kang, Seungho Lee, Jin Seog Kim, Da Young Kang, Josef Chmelík, and Mi Ri Park
- Subjects
Field flow fractionation ,Chromatography ,Field (physics) ,Chemistry ,Elution ,Organic Chemistry ,Flow (psychology) ,General Medicine ,Biochemistry ,Analytical Chemistry ,Volumetric flow rate ,Gravitation ,Gravitational field ,Selectivity - Abstract
Gravitational field-flow fractionation (GrFFF) has been shown to be useful for separation and characterization of various types of micrometer-sized particles. It has been recognized however that GrFFF is less versatile than other members of FFF because the external field (Earth's gravity) in GrFFF is relatively weak and is not tunable (constant), which makes the force acting on the particles constant. A few approaches have been suggested to control the force acting on particles in GrFFF. They include (1) changing the angle between the Earth's gravitational field and the longitudinal axis of the channel, and (2) the use of carrier liquid having different densities. In the hyperlayer mode of GrFFF, the hydrodynamic lift force (HLF) also act on particles. The existence of HLF allows other means of changing the force acting on the particles in GrFFF. They include (1) the flow rate programming, or (2) the use of channels having non-constant cross-section. In this study, with polystyrene latex beads used as model particles, the channel angle was varied to study its effect on elution parameters (such as selectivity, band broadening and resolution) in the steric or in the hyperlayer mode of GrFFF. In addition, the effects of the channel thickness and the flow rate on the elution parameters were also investigated. It was found that, in the steric mode, the resolution decreases as the flow rate increases due to increased zone broadening despite of the increase in the selectivity. At a constant volumetric flow rate, both the zone broadening and the selectivity increase as the channel thickness increases, resulting in the net increase in the resolution. It was also found that the retention time decreases as the channel angle increases in both up- and down-flow positions. The zone broadening tends to increase almost linearly with the channel angle, while no particular trends were found in selectivity. As a result, the resolution decreases as the channel angle increases.
- Published
- 2008
8. Interdisciplinary treatment for an adult patient with anterior open bite, severe periodontitis, and intellectual disability
- Author
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Sung Hwan Choi, Young-Soo Jung, Da Young Kang, and Chung Ju Hwang
- Subjects
Adult ,Cephalometry ,medicine.medical_treatment ,Osteotomy, Sagittal Split Ramus ,Dentistry ,Osteotomy ,Severe periodontitis ,Orthodontics, Corrective ,Gummy smile ,Intellectual Disability ,Intellectual disability ,medicine ,Humans ,Radiation treatment planning ,Periodontitis ,Anterior teeth ,business.industry ,Open Bite ,General Medicine ,Craniometry ,medicine.disease ,Otorhinolaryngology ,Surgery ,Female ,business ,Facial symmetry - Abstract
This case report describes the beneficial effects of the interdisciplinary treatment of an adult patient with severe skeletal periodontal problems. A 30-year-old female patient presented with anterior open bite, gummy smile, and facial asymmetry. The patient had chronic generalized severe periodontitis with pathologic maxillary anterior teeth migration and mild intellectual disability. Treatment included 6 months of periodontal treatment, followed by presurgical orthodontic treatment, a Le Fort I osteotomy with anterior segmental osteotomy, a bilateral sagittal split ramus osteotomy, and postsurgical orthodontic treatment. After treatment completion, the patient exhibited functional and aesthetic improvements. Her periodontal condition improved and was maintained after the treatment. Here, we demonstrate a successful treatment outcome in a complicated case following a systematic interdisciplinary approach performed with the correct diagnosis and treatment planning.
- Published
- 2015
9. UPLC-MS/MS method for determination of bepotastine in human plasma
- Author
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Yun Sung Nam, Hak Rim Kim, Da Young Kang, Ji Hoon Jeong, Yun Kyoung Choi, Yong Seong Lee, Yoon Hee Chung, Seo Eun Lee, and Hohyun Kim
- Subjects
Male ,Spectrometry, Mass, Electrospray Ionization ,Pyridines ,Analytical chemistry ,Administration, Oral ,Tandem mass spectrometry ,Analytical Chemistry ,Ion ,Matrix (chemical analysis) ,chemistry.chemical_compound ,Drug Stability ,Piperidines ,Tandem Mass Spectrometry ,Ammonium formate ,medicine ,Humans ,Reproducibility ,Chromatography ,Chemistry ,Extraction (chemistry) ,Selected reaction monitoring ,Reproducibility of Results ,General Medicine ,Bepotastine ,medicine.drug ,Chromatography, Liquid - Abstract
A sensitive and rapid method for quantitation of bepotastine in human plasma has been established using ultra performance liquid chromatography-electrospray ionization tandem mass spectrometry (UPLC-ESI-MS/MS). Valsartan was used as an internal standard. Bepotastine and internal standard in plasma sample were extracted using ethylacetate (liquid-liquid extraction). A centrifuged upper layer was then evaporated and reconstituted with the mobile phase of acetonitrile--5 mM ammonium formate (pH 3.5) (85:15, v/v). The reconstituted samples were injected into a phenyl column. Using MS/MS in the multiple reaction monitoring mode, bepotastine and valsartan were detected without severe interference from human plasma matrix. Bepotastine produced a protonated precursor ion ([M+H](+)) at m/z 389 and a corresponding product ion at m/z 167. And the internal standard produced a protonated precursor ion ([M+H](+)) at m/z 436 and a corresponding product ion at m/z 291. Detection of bepotastine in human plasma by the UPLC-ESI-MS/MS method was accurate and precise with a quantitation limit of 0.2 ng/mL. The validation, reproducibility, stability and recovery of the method were evaluated. The method has been successfully applied to pharmacokinetic studies of bepotastine in human plasma.
- Published
- 2013
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