http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
노진혁,이병진,조옥자,박시룡 대한피부과학회 2003 大韓皮膚科學會誌 Vol.41 No.7
Angiosarcoma is a rare malignant tumor of endothelial cell origin. Histopathologically, varied differentiation may be observed even within the same tumor. Epithelioid angiosarcoma is one subset of poorly differentiated angiosarcoma which is a rare variant. We report a case of epithelioid angiosarcoma of the scalp in a 59-year-old man. The patient had a painful solitary, 2×3 cm sized, dome-shaped, firm, erythematous to purplish nodule with crust on the vertex of the scalp. Histopathologically, the tumor was chiefly composed of solid sheets of atypical epithelioid cells with prominent eosinophilic cytoplasm, a large vesicular nuclei, and occasional intracytoplasmic vacuoles. Well to moderately differentiated areas with irregular vascular channel-like structures lined by atypical hyperchromatic endothelial cells were also seen in the peripheral areas of the tumor. Immunohistochemically, the tumor cells were positive with CD31 which is sensitive marker of endothelial cell. (Korean J Dermatol 2003;41(7) : 971~973)
이병진,노진혁,조옥자,박시룡 대한피부과학회 2003 大韓皮膚科學會誌 Vol.41 No.1
Desmoplastic trichilemmoma is a rare variant of trichilemmoma characterized by typical features of trichilemmoma with abundant desmoplastic stroma. We report herein a 54-year-old man presented with 2-year history of a solitary bean sized verrucous nodule on the occipital scalp. Histologically, the tumor showed a well-defined lobular growth extending from the epidermis into the dermis with abundant central desmoplastic stroma. Epithelial lobules at the margins of the neoplasm showed the typical features of trichilemmoma composed of glycogen-rich clear cells and peripheral palisading columnar cells. In contrast, at the center the cells assume a more random pattern of cords and strands traversed by the hyaline stroma, mimicking invasive carcinoma. It was diagnosed desmoplastic trichilemmoma by the distinctive histologic appearance and totally excised. (Korean J Dermatol 2003;41(1) : 120∼122)
항공용 안테나 하이브리드 모노펄스 레이다 시스템의 실용적 표적 방위각 추정 방법
김진우(Jin-Woo Kim),윤재혁(Jae-Hyuk Youn),노수현(Soo-Hyun Rho),이종은(Rho1?Jong-Eun Lee),전영범(Yeong-Beom Jeon),옥재우(Jae-Woo Ok),유응노(Eung-Noh You),윤상호(Sang-Ho Yoon),신현익(Hyun-Ik Shin) 한국전자파학회 2018 한국전자파학회논문지 Vol.29 No.9
항공용 안테나 하이브리드 모노펄스 레이다 시스템을 이용하여 지상 이동표적 탐지 시, 표적의 방위각 정확도는 시스템 내 채널 간 위상 불균형에 따른 모노펄스 기울기 추정 정확도에 지배적으로 영향을 받는다. 본 논문에서는 안테나와 180도 하이브리드의 물리적 길이 차이에 의한 위상 불균형을 효과적으로 보상할 수 있는 방법을 제안 하였다. 비행시험을 통하여 제안된 방법의 성능을 검증한 결과, 보상 전보다 유의한 성능개선 효과를 확인할 수 있었다. The accuracy of extracting the azimuth angle of a target is significantly affected by the error in the mono-pulse ratio of the air-borne antenna hybrid mono-pulse Radar system. This error is strongly induced by the phase imbalance between the channels of the system. In this paper, a method is proposed for effectively calibrating the phase imbalance caused by physical differences between the RF channels from the antenna to the 180° hybrid. Through a flight test, it was confirmed that the accuracy of the azimuth angle of the target is improved by using the proposed method.
(Jin Seok Kim),(Woo Hyuk Song),(Chol Shin),(Chang Gyu Park),(Hong Seog Seo),(Wan Joo Shim),(Dong Joo Oh),(Sae Hwa Ryu),(Young Moo Rho) 대한내과학회 2001 The Korean Journal of Internal Medicine Vol.16 No.2
N/A Background: Hypertension is the most important, and yet modifiable, risk factor for cardiovascular diseases. But in many countries, hypertension remains poorly controlled. Moreover, sleep apnea syndrome has shown that it is correlated with hypertension. The purpose of this study was to investigate the prevalence, awareness and control of hypertension among the Korean people and to evaluate the relationship between hypertension and snoring. Methods: A total of 640 subjects living in Ansan, a regional city in Korea, were selected randomly, and trained nursing students investigated their age, sex, medical history, blood pressure, body mass index (BMI) and snoring score. Blood pressures were measured three times with a 10 - minute interval and then averaged. The degree of snoring was estimated using a questionnaire. We divided the subjects into hypertensive (BP≥140/90 mmHg) versus normotensive group and snorer versus non-snorer group, and correlated hypertension with snoring. Results: Of 640 subjects, 311 were male. The mean age was 39.7±14.6 years (18-77 years), the mean BMI (body mass index) was 22.4±3.0 kg/m2. The mean systolic and diastolic blood pressure was 121±15.7 mmHg and 79.5±11.6 mmHg. The prevalence and awareness of hypertension were 22.2% and 16.9%, respectively, and the prevalence of snoring was 35.2%. With the increment of age, in the male, the prevalence of hypertension and snoring were higher, and the snorer group showed a higher risk of hypertension than the non-snorer group (Odds ratio 2.32, CI=1.56-3.39, p=0.0001). Conclusion: In Korea, the prevalence of hypertension was similar to that in the western countries, but the awareness of hypertension was much lower compared with western countries. The prevalence of hypertension was higher in the snorer group, so more research on the correlation between the two conditions should be advanced in the future.
Rho Yujin,Kim Minji,Beon Jungeun,Kim Yeojin,Yoon Sunwoo,Nam You Jin,Hong Sunhwa,Cho Yong Hyuk,Son Sang Joon,Hong Chang Hyung,Roh Hyun Woong 대한신경정신의학회 2023 PSYCHIATRY INVESTIGATION Vol.20 No.8
Objective Contact frequency with adult children plays a critical role in late-life depression. However, evidence on possible moderators of this association remains limited. Moreover, considering alterations in contact modes after the coronavirus disease-2019 pandemic, there is a need to investigate this association post-pandemic to develop effective therapeutic interventions.Methods This study included 7,573 older adults who completed the Living Profiles of the Older People Survey in Korea. Participants’ contact frequency and depressive symptoms were analyzed. Regression analysis was performed after adjusting for covariates. The moderating effects of variables were verified using a process macro.Results Multivariable logistic regression analysis revealed that infrequent face-to-face (odd ratio [OR]=1.86, 95% confidence interval [CI]=1.55–2.22) and non-face-to-face contact (OR=1.23, 95% CI=1.04–1.45) in the non-cohabitating adult children group was associated with a higher risk of late-life depression compared to that in the frequent contact group. Linear regression analysis indicated consistent results for face-to-face and non-face-to-face contact (estimate=0.458, standard error [SE]=0.090, p<0.001 and estimate=0.236, SE= 0.074, p=0.001, respectively). Moderation analysis revealed that the association between late-life depression and frequency of face-toface contact was moderated by age, household income quartiles, number of chronic diseases, physical activity frequency, presence of spouse, nutritional status, and whether the effect of frequency of non-face-to-face contact on late-life depression was increased by participation in social activity, frequent physical activity, and good cognitive function (p for interaction<0.05).Conclusion Frequent contact with non-cohabitating children lowers the risk of depression later in life. Several variables were identified as significant moderators of contact frequency and depression symptoms.
임진혁 ( Jin-hyuk Lim ),조효준 ( Hyo-jun Cho ),조숙희 ( Suk-hee Cho ),노영주 ( Young J Rho ) 한국정보처리학회 2010 한국정보처리학회 학술대회논문집 Vol.17 No.2
최근 스마트폰의 수요가 급증하면서, 사용자들의 편의를 위한 애플리케이션의 필요성도 함께 증가하고 있다. 또한 무선 랜(wi-fi)이 제공되는 지역도 점점 늘어나는 추세이다. 이러한 흐름의 일환으로, 우리는 어디서든 사용이 가능하며, 우리가 속한 대학에 특화된 스마트폰용 메신저를 개발하였다. 스마트폰의 무선 랜(Wi-fi)기능을 이용하여 문자, 음성, 파일 전송 등 이동성을 살린 메신저는 학생들과 교직원들이 편리하게 사용 할 수 있어 학교에서 일어나는 활동에 적합화되어 있다.
Bae, Woo Jin,Koo, Bon Seok,Lee, Sang Hyuk,Kim, Jin Man,Rho, Young Soo,Lim, Jae Yol,Moon, Jung Hwa,Cho, Jae Hoon,Lim, Young Chang Nature Publishing Group 2017 The British journal of cancer Vol. No.
<P><B>Background:</B></P><P>Head and neck squamous cell carcinomas (HNSCCs) are highly lethal epithelial tumours containing self-renewal cancer stem cells (CSCs). CSCs in HNSCCs are strongly associated with tumour initiation, invasion, and chemoradiation resistance. However, the important factors regulating stemness in HNSCCs remain unclear. Here, we investigated the molecular roles and clinical significance of inhibitor of DNA binding 2 (Id2) protein to determine if it constitutes a novel therapeutic target for ablating HNSCC cells with stemness.</P><P><B>Methods:</B></P><P>We performed <I>in vitro</I> and <I>in vivo</I> studies of Id2 function and its effects on stemness using HNSCC cells. We also examined whether Id2 expression could be used as a prognostic indicator through immunohistochemical staining of 119 human HNSCC tumours.</P><P><B>Results:</B></P><P>Expression of Id2 was higher in HNSCC cells with stemness compared with differentiated HNSCC cells. Overexpression of Id2 increased proliferation, self-renewal, and expression of the putative stemness marker CD44 in HNSCC cells <I>in vitro</I> and <I>in vivo</I>. In contrast, silencing of <I>Id2</I> using short hairpin RNA attenuated the stemness phenotype of HNSCC cells by reducing self-renewal, CD44 expression, cisplatin chemoresistance, and xenograft tumourigenicity. Most importantly, increased expression of Id2 was closely associated with poorer post-treatment survival rates in HNSCC patients.</P><P><B>Conclusions:</B></P><P>Inhibitor of DNA binding2 represents a novel and promising therapeutic target for treating and improving the clinical outcomes for patients with HNSCC.</P>