Search

Your search keyword '"Kwon, H.J."' showing total 17 results
Start Over Author "Kwon, H.J." Database Supplemental Index
17 results on '"Kwon, H.J."'

4. Changing prevalence and treatment outcomes of patients with p16 human papillomavirus related oropharyngeal squamous cell carcinoma in New Zealand.

Author

Kwon, H.J., Brasch, H.D., Benison, S., Marsh, R.W., Itinteang, T., Titchener, G.W., Evans, J., and Tan, S.T.

Subjects
OROPHARYNGEAL cancer, SQUAMOUS cell carcinoma, PAPILLOMAVIRUS diseases, DISEASE prevalence, CANCER treatment
Abstract

There has, to our knowledge, been no previous report of changes in the prevalence and outcomes of treatment of HPV-positive (+) oropharyngeal squamous cell carcinoma (SCC) in New Zealand. We identified all affected patients in the greater Wellington region between 1 January 1994 and 30 November 2014 from the New Zealand Cancer Registry. Their personal details, characteristics of their tumours, treatment, complications, and outcomes were collected retrospectively from their casenotes and the New Zealand Death Registry, followed by p16 immunohistochemical staining. Of the 161 patients included, 131 (81%) were men. p16 immunohistochemical staining was done routinely in 13 patients during investigations, and retrospectively for 135 patients. The proportion of p16+ oropharyngeal SCC increased from 24% during 1994-1999, to 76% during 2009-2014 (p < 0.001). Oropharyngeal SCC among Europeans was more likely to be p16+ than in non-Europeans (67% compared with 44%, p = 0.036). Patients with p16+ disease were younger (mean (SD) 56 (10) compared with 66 (9) years, p < 0.01) with fewer coexisting conditions (mean (SD) Charlson Comorbidity Index: 2.45 (0.82) compared with 2.92 (1.16), p = 0.01), and less likely to have smoked (57/81(70%) compared with 38/42 (91%) p = 0.035), or misused alcohol (12/81 (15%) compared with 14/42 (31%), p = 0.042), or both. They were also more likely to have poorly differentiated tumours (30/52 (58%) compared with 9/34 (26%), p = 0.019) with nodal metastases (74/85 (87%) compared with 17/30 (57%), p = 0.001). Overall 5-year all-cause survival was more favourable for patients with p16+ disease (65/86 (76%) compared with 15/49 (31%), p = 0.000). Interestingly, all-cause age at death was younger in p16+ patients (62 (11.1) compared with 71 (11.2) years, p = 0.001). The prevalence of p16+ oropharyngeal SCC had tripled in this population between 1994 and 2014, and affected patients have distinct characteristics and outcomes of treatment. [ABSTRACT FROM AUTHOR]

Published
2016
Full Text
View/download PDF

7. Die Design of Aluminum Bipolar Plate Fabrication by Stamping Process and its Investigation

Author

Kwon, H.J., Jeon, Y.P., and Kang, Chung Gil

Abstract

A Proton Exchange Membrane Fuel Cell (PEMFC) is a type of fuel cell being developed for automotive applications as well as for stationary fuel cell applications and portable fuel cell applications. Its performance such as power density can be improved by the use of the bipolar plate with a new lightweight material which is one of core components making up PEMFC stack. Aluminum alloy has good mechanical properties not only in terms of density, electrical resistivity and thermal conductivity, but also in terms of corrosion resistant compared with stainless steel and graphite composites bipolar plate. Furthermore, the use of aluminum for a bipolar plate reduces simultaneously the cost and weight of it, and it contributes to the ease of machining. For these reason, an aluminum alloy is selected in this study. This study presents the feasibility of the simulation for the development of aluminum bipolar plates that consists of multi array micro channels. The analytical solutions obtained by the simulation are validated by the comparison with the experimental results. From the results, it is ensured that the stamping processes for the bipolar plate could be predicted and designed by the results of the by FE-Simulation.

Published
2012
Full Text
View/download PDF

8. Biomechanical Skin Measurement System for Anlaysis Viscoelasticity

Author

Kwon, H.J., Kwon, Y.H., and Kim, Yoon Hyuk

Abstract

We design the biomechanical skin measurement system which is assembled with multi-components load cell and actuator. The multi-components load cell simultaneously measures the normal load (Fz), and moniter (Fx, Fy) with strain gages. Capacity and accuracy of load cell are less than 5 N and 0.1%. In this research, designed measurement system applies to determine in-vivo viscoelasticity of human skin.

Published
2006
Full Text
View/download PDF

10. Alternately Stacked Langmuir-Blodgett Film of Phospholipid and ZnO as an Olfactory Sensing Membrane

Author

Choi, S.-A., Lee, Y.-J., Kwon, H.J., Chang, Y.K., and Kim, J.-D.

Abstract

AbstractLangmuir-Blodgett films of Phospholipid and ZnO were investigated as a sensing membrane to enhance the sensitivity of an olfactory sensor. The membranes were fabricated by alternate stack of dipalmitoylphophatidic acid (DPPA) and ZnO. Compared with the DPPA LB film, the alternately stacked film system showed higher sensitivity and faster response to gases. The chemical vapors used in this study were methanol, ethanol, and acetone.

Published
1997
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results