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휴대폰 단문전송서비스 비교 분석 : 영동지역권을 중심으로
이창수,고경태,정연철,진연웅,함용식 강릉대학교 동해안지역연구소 2000 東海岸硏究 Vol.11 No.2
The purpose of this paper is to analyze and compare the short message services from the cellular phones and PCSs. As the spread of Internet, short message service burst on the scene as the major tools of communication for the new generation using cellular phone and PCS. With the many advantages, short message service expect to enlarge its area into the mobile commerce. The results of this paper is the comparison of short message services. The result shows the best site of short message service is www.arreo.com. But there are some unsettled factors which not considered.
( Jae Hong Oh ),( Byeong Chang Ko ),( Hee Jae Park ),( Seung Pil Ham ),( Mira Choi ),( Sik Haw ),( Hai-jin Park ) 대한피부과학회 2019 대한피부과학회 학술발표대회집 Vol.71 No.1
Hidrocanthoma simplex(HAS) is a rare benign intraepidermal neoplasm arising from eccrine duct. Clinically, it appears as brownish or verrucous plaque on the lower extremities. Histologically, HAS can exhibit intraepidermal cell nests which are called “Borst-Jadassohn phenomenon”. It could be observed in the HAS, clonal seborrheic keratosis (SK), Bowen’s disease and actinic keratosis. An 86-year-old female presented with several decades history of huge brown, verrucous plaque on the right buttock. At initial biopsy, intraepidermal clonal expansion of polygonal basaloid cells were observed within acanthotic epidermis. She was diagnosed as clonal SK, and was removed by CO2 laser ablation. After 3 months, she returned with polypoid grouped papules on the previously treated area. Histologic examination showed intraepidermal proliferation of small to medium-sized polygonal basaloid cells as well as large cells with abundant clear cytoplasm. Atypical cells with large, hyperchromatic nuclei were observed. There was a component of eccrine syringofibroadenoma which is characterized by thin, anastomosing cords of epithelial networks with duct formation extending from the base of the tumor. Tumor cells were stained with EMA and PAS. Final diagnosis was HAS combined with eccrine poroma, eccrine syringofibroadenoma and focal malignant changes. Herein we report a case showing natural history of eccrine tumor from HAS to malignant changes over time.
윤복연,문덕환,박명희,황용식,함성애,손병철,김대환,이창희,김휘동,이채언 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.5
Objective : This study was conducted to prepare the fundamental data on heavy metal concentration in hair permanents agents and to prevent the health impairment due to heavy metal. Methods and Material : The author determined of 5 heavy metals(Pb, Cr, Mn, Ni, and Cu) concentration hair permanent agents in the market with flameless atomic absorption spectrophotometer. Results : The results were as follows: 1. The geometic mean concentrations of total subjects were 0.04㎍/g for Pb, 0.09㎍/g for Cr, 0.06㎍/g for Mn, 0.03㎍/g for Ni, and 0.04㎍/g for Cu. 2. The most highest mean concentrations of heavy metals in hair permanent agents by using type were Cr for wave agent and straight cream agent, Cu for setting iron agent, Cr and Cu for coating perm agent. 3. Metal most hlghest mean concentrations of heavy in hair permanent agents by type of color was green for Cu. 4. The mean concentration of Cu among 5 heavy metals in hair permanent agents by marker was most highest. 5. There was most statistically significant difference on mean concentration in hair permanent agents between domestic and foreign products. 6. The exposure amount of heavy metal concentration by one time using the permanent agent were 4.O㎍ for Pb, 9.O㎍ for Cr, 6.0㎍ for Mn, 3.O㎍ for Ni and 4.0㎍ for Cu. Conclusion : As above results author suggest to prepare the preventive program of health impairment due to heavy metal by long term chronic exposure to who were using the hair permanent agents hair designer and customers.
전립선암의 호르몬 불응성과 PTEN, CD44 발현양상의 연관성 분석
함원식(Won Sik Ham),박재원(Jae Won Park),조강수(Kang Su Cho),이창기(Chang Kee Lee),최영득(Young Deuk Choi),홍성준(Sung Joon Hong) 대한비뇨기종양학회 2012 대한비뇨기종양학회지 Vol.10 No.1
Purpose: Most prostate cancers (PCs) ultimately progress to castration resistant prostate cancer (CRPC) after androgen deprivation therapy (ADT). Because cancer stem cells survive ADT, which can lead to tumor recurrence and understanding the molecular changes that occur after ADT would helpful for finding novel therapies targeting CRPC, we analyzed the expression of CD44, a stem cell marker in radical prostatectomy samples after ADT. Materials and Methods: PTEN and CD44 expression profiles were determined by microarray or real-time PCR in 107 radical prostatectomy specimens from patients given neoadjuvant ADT. Pathological regressive changes and the correlation of postoperative biochemical failure with PTEN and CD44 expression were analyzed. Results: As the PC tissues had minimal regression effects after ADT, they showed significantly advanced pathological stage (p=0.001), PTEN inactivation (p<0.001), and high CD44 expression (p<0.001). The PTEN inactivation group showed a significantly higher probability of positive CD44 expression compared to the non-PTEN inactivation group (OR 10.5, 95% CI 4.0 to 27.6, p<0.001). Cox regression analysis revealed that seminal vesicle invasion, biopsy Gleason score, and CD44 expression were significantly associated with the time to biochemical recurrence. Conclusions: PC tissues refractory to ADT showed PTEN inactivation with high CD44 expression. The PTEN inactivation group showed a significantly high probability of positive CD44 expression. Our results support that the PTEN/PI3K/Akt pathways are necessary for prostate cancer stem cell maintenance.
Chang-Sik Kim,Robert Bosselman,Hyung-Min Choi,Keum Sil Lee,Eojina Kim,Hyeyoung Moon,Yoon Jung Jang,Sunny Ham 한국영양학회 2020 Nutrition Research and Practice Vol.14 No.4
BACKGROUND/OBJECTIVES: The expansion of menu labeling to restaurants has created a need to study customers" behavior toward nutrition information. Therefore, the purpose of this research was to compare college students" behavior toward nutrition information communication between Korea and the US. This study consisted of three objectives: 1) to compare the frequency of usage as well as degree of trust regarding smartphone-based communication channels in the acquisition of nutrition information among college students between Korea and the US, 2) to compare knowledge-sharing behavior related to nutrition information among college students between Korea and the US, and 3) to identify the role of country in the process of knowledge-sharing behavior. SUBJECTS/METHODS: A survey was distributed via the web to college students in Korea and the US. Data were collected in the 2nd week of March 2017. Completed responses were collected from 423 Koreans and 280 Americans. Differences between Koreans and Americans were evaluated for statistical significance using a t-test. In order to verify the effects of knowledge self-efficacy and transactive memory capability on knowledge-sharing behavior related to nutrition information, a regression analysis was performed. RESULTS: Significant differences were found in the frequency of usage as well as degree of trust in communication channels related to nutrition information between Korean and American college students. While knowledge self-efficacy and tractive memory capability had positive effects on knowledge-sharing behavior related to nutrition information, country had a significant effect on the process. CONCLUSIONS: This study is the first to compare customer behavior toward nutrition information acquisition and sharing between Korea and the US. Comparative research on nutrition information revealed differences among the different countries. Therefore, this study contributes to the body of knowledge on the nutrition information research, in particular, by providing a comparison study between countries.