Search

Your search keyword '"Choi, Bo Yoon"' showing total 46 results
Start Over Author "Choi, Bo Yoon"
46 results on '"Choi, Bo Yoon"'

12. The Embodiment of Autonomic Computing in the Middleware for Distributed System with Bayesian Networks

Author

Choi, Bo-Yoon, Kim, Kyung-Joong, Cho, Sung-Bae, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Huang, De-Shuang, editor, Li, Kang, editor, and Irwin, George William, editor

Published
2006
Full Text
View/download PDF

13. Effects of Olfactory Training in Patients With Postinfectious Olfactory Dysfunction

Author

Choi, Bo Yoon, Jeong, Hamin, Noh, Haemin, Park, Joon Yong, Cho, Jae Hoon, and Kim, Jin Kook

Subjects
Olfactory system, medicine.medical_specialty, Psychological function, Visual analogue scale, business.industry, Anosmia, Postviral, Smell, RF1-547, Otorhinolaryngology, Treatment modality, Internal medicine, medicine, Etiology, Medicine, Regeneration, Original Article, Surgery, In patient, Therapy, medicine.symptom, business, Korean version
Abstract

Objectives. Postinfectious olfactory dysfunction (PIOD) is the most common etiology of olfactory dysfunction, and olfactory training (OT) is an accepted treatment modality for PIOD. Some studies have investigated OT in Korean patients, but they involved odorants unfamiliar to Koreans or had no control group. The aim of this study was to verify the efficacy of OT in PIOD patients, using odorants familiar to Koreans and including a control group.Methods. We enrolled a total of 104 Korean patients with PIOD over the 3-year study period. All participants were assessed using endoscopy and an olfactory function test at the baseline assessment and 3 months after OT. The olfactory function test was performed using the Korean version of Sniffin’ stick (KVSS) II. Nasal and psychological function was evaluated using a visual analog scale and the Mini-Mental State Examination. OT was performed over a period of 3 months, using five odorants (rose, lemon, cinnamon, orange, and peach).Results. OT improved olfactory function in approximately 40% of subjects over a period of 12 weeks compared to non-OT subjects. A comparison of changes between the initial and follow-up assessments demonstrated that the OT group had significantly better olfactory results for the total KVSS II, threshold, and identification scores than the non-OT group. The degree of olfactory improvement after OT was affected by the initial score.Conclusion. The effects of OT in patients with PIOD were demonstrated in this study. A meaningful contribution of this study is that Korean patients were tested using odors familiar to them in comparison with a control group.

Published
2021

16. Does Improved Attention Induced by Caffeine Intake Affect Olfactory Function?

Author

Han, Kyujin, Lee, Jiyeon, Choi, Bo Yoon, Jeong, Hamin, Cho, Jae Hoon, and Kim, Jin Kook

Subjects
Olfactory system, Nasal cavity, medicine.medical_specialty, Visual analogue scale, lcsh:Medicine, Audiology, Affect (psychology), 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, Acoustic rhinometry, smell, medicine, 030212 general & internal medicine, caffeine, business.industry, lcsh:R, Cognition, lcsh:Otorhinolaryngology, lcsh:RF1-547, attention, medicine.anatomical_structure, Otorhinolaryngology, chemistry, Original Article, Surgery, Caffeine intake, business, Caffeine, 030217 neurology & neurosurgery
Abstract

Objectives. Past several studies have proven that caffeine facilitates attentional enhancement by acting as an adenosine antagonist once it is absorbed by the body, resulting in improved psycho-behavioral function. Modern clinical olfactory function tests are usually assessed by psychophysical tests but due to a paucity of data, the influence of enhanced attention by caffeine on olfactory function still remains unclear. The objective of this study was to compare results of cognitive function (attention) and olfactory function before and after caffeine administration in order to analyze effects of caffeine on olfactory function in normosmic subjects.Methods. This study enrolled 49 participants of Konkuk University Hospital with a mean age of 27.7 years who had patent olfactory clefts and no olfactory dysfunction from May 2015 to February 2016. Subjects were restrained from caffeine 10 hours before the test. On day 1, participant’s subjective olfactory function was evaluated before and after uptake of either caffeinated or decaffeinated coffee using visual analog scale (VAS) score, minimum cross-sectional area (MCA) measured by acoustic rhinometry, and the Korean version of Sniffin’ Stick II (KVSS II). Evaluation of participant’s attentional degree was measured by d2 test. On day 2, the same procedure was carried out with counterpart substance. The type of coffee initially administrated was randomly selected.Results. After administration, caffeinated coffee resulted in significant attentional enhancement than decaffeinated coffee. Results of d2 test showed statistically significant differences in the parameters of total number of errors and omission errors. In both the caffeinated and decaffeinated groups, the patients showed slight increase in VAS score and nasal cavity area; however, the difference was not statistically significant. Also, caffeinated coffee intake compared to decaffeinated coffee intake showed no significant relevance to olfactory function.Conclusion. Caffeine may significantly improve attentional congnitive function, while not have acute effects on olfactory function.

Published
2020

21. Tcap gene mutations in hypertrophic cardiomyopathy and dilated cardiomyopathy

Author

Hayashi, Takeharu, Arimura, Takuro, Itoh-Satoh, Manatsu, Ueda, Kazuo, Hohda, Shigeru, Inagaki, Natsuko, Takahashi, Megumi, Hori, Hisae, Yasunami, Michio, Nishi, Hirofumi, Koga, Yoshinori, Nakamura, Hiroshi, Matsuzaki, Masunori, Choi, Bo Yoon, Bae, Sung Won, You, Cheol Woon, Han, Kyung Hoon, Park, Jeong Euy, Knöll, Ralph, Hoshijima, Masahiko, Chien, Kenneth R., and Kimura, Akinori

Published
2004
Full Text
View/download PDF

32. An aldehyde derivative

Author

Markgraf, J. Hodge and Choi, Bo Yoon

Subjects
Aldehydes -- Analysis, Chemistry, Education, Science and technology
Abstract

A variation of the approach of D. Melamed and M. Pickering for identification of aldehyde unknown compounds to avoid using semicarbazones and various nitrophenylhydrazones has been developed and applied to aldehydes for the introductory organic chemistry course at Williams College. Melamed and Pickering developed a cyclic dithioketal as an alternative to the toxic reagents used for ketone derivatization. They chose 3,4,5,6-tetramethyl-1,2-benzenedimethanethiol. There were some difficulties with the nature of the acid catalyst, the generation of polymers, the presence of double bonds, and liquid products that occasionally show up.

Published
1998

42. Gene Delivery to the Rat Liver Using Cationic Lipid Emulsion/DNA Complex: Comparison between Intra-arterial, Intraportal and Intravenous Administration

Author

Choi, Bo Yoon, primary, Chung, Jin Wook, additional, Park, Jae Hyung, additional, Kim, Keon Ha, additional, Kim, Young Il, additional, Koh, Young Hwan, additional, Kwon, Jong Won, additional, Lee, Kyoung Ho, additional, Choi, Hyuk Jae, additional, Kim, Tae Woo, additional, Kim, Young Jin, additional, Chung, Hesson, additional, Kwon, Ik Chan, additional, and Jeong, Seo Young, additional

Published
2002
Full Text
View/download PDF

46. Inflammatory myofibroblastic tumour of the liver in a child: CT and MR findings.

Author

Choi BY, Kim WS, Cheon JE, Kim IO, Kim CJ, and Yeon KM

Subjects
Bile Ducts, Intrahepatic diagnostic imaging, Bile Ducts, Intrahepatic pathology, Cholestasis diagnosis, Cholestasis pathology, Humans, Infant, Inflammation pathology, Liver Neoplasms pathology, Magnetic Resonance Imaging, Male, Neoplasms, Muscle Tissue pathology, Tomography, X-Ray Computed, Ultrasonography, Interventional, Inflammation diagnosis, Liver diagnostic imaging, Liver pathology, Liver Neoplasms diagnosis, Neoplasms, Muscle Tissue diagnosis
Abstract

Inflammatory myofibroblastic tumour of the liver is a rare disease in children and is characterized by an inflammatory mass of uncertain aetiology which simulates a true neoplasm, often resulting in a diagnostic dilemma. We report a pathologically proven case of inflammatory myofibroblastic tumour of the liver in a 14-month-old boy with jaundice. CT and MRI showed an ill-defined, homogeneously enhancing mass located in the hilar portion of the liver with biliary obstruction. He underwent percutaneous transhepatic biliary drainage to relieve obstructive jaundice, followed by lobectomy and, finally, liver transplantation.

Published
2003
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results