Wc - Ni 계 초경합금 소결에 관한 연구

이홍열,박원구 대한금속재료학회 1991 대한금속재료학회 학술대회 개요집 Vol.1991 No.1

CCIR총회보고서 번역 발간분책별내용 요약보고서(II)

이홍열 한국정보통신기술협회 1992 TTA소식 Vol.4 No.3

집성 목재에 관하여 -강도를 중심으로 한 소고- - 강도를 중심으로 한 소고 ( Glued Laminated Lumber )

이홍열 대한건축학회 1971 建築 Vol.15 No.1

목재는 성장과정에서 발생하는 일차결점으로 인해 잠시구축되였으나 제1차대전의 발발로 말미암아 각국의 철재 부족이 절정에 달하자 다시 목구조에 관한 연구에 심혈을 경주한 결과 신흥목구조를 출현시키는데 성공했다. 대재를 구득할 수 없는 지역적 사정은 소재를 조합하는 접합법과(glued laminated lumber)화 위해 많은 노력을 한 결과 눈부신 발전을 했다. 목재자원이 풍부한 우리나라는 건축기술면에 있어서 고도의 발전을 하였음을 오늘날 국보급 건축물로서 입증하고 있다. 그러나 광복과 사변의 무질서와 혼란기를 전후하여 산림보호육성은 외면한채 무모한 채벌을 하였고, 전국 생산량의 태반을 차지하는 지역은 미수복으로 끝났으며 또 건축재 이외의 이용도가 급증하여 수급에 큰 차질이 생겨 근래 수요의 대부분을 외국 생산재에 의존하고 있다. 요즘과 같이 도시건축물의 밀도가 높아짐에 따라 구조체가 불연재이기를 원하는 것은 당연하나 현금 철재 등 자원이 풍부한 외국에서는 목조건물이 과반수를 차지하고 있음은 목재가 지니고 있는 우위성에 원인이 있는 것으로 생각 한다.

CCIR총회보고서 번역 발간분책별내용 요약보고서(I)

이홍열 한국정보통신기술협회 1992 TTA소식 Vol.4 No.2

標本企業의 ROE實證的 分析 : 纖維電子産業을 中心으로

李洪悅 광주대학교 산업경영연구소 1989 산경연구 : 광주대 Vol.2 No.-

Risk of cancer incidence in patients with idiopathic pulmonary fibrosis : A National Health Insurance Service data analysis

이홍열,이진우,이창훈,최선미 대한결핵 및 호흡기학회 2018 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.126 No.-

Introduction: Limited population-based data are available on cancer risk among patients with idiopathic pulmonary fibrosis (IPF). The aim of our study was to compare the incidence risk of various cancers among patients with IPF and those without IPF based on the National Health Insurance Service (NHIS) database in Korea. Method: Patients with IPF who did not have a previous diagnosis of cancer were selected from the NHIS database between 2009 and 2015. An age-, sex-, and year of diagnosis-matched control population of individuals without IPF was randomly selected at a control-to-case ratio of 3:1. Both cohorts were followed up to observe cancer occurrence based on ICD-10 diagnosis code until December 2016. Results: A total of 24,177 patients with IPF were included. The incidence rate of newly diagnosed cancer was 33.5 cases per 1,000 person-years in patients with IPF and 13.6 cases per 1,000 person-years in the control cohort. After adjusting for age, sex, and diabetes mellitus, patients with IPF showed a significantly higher risk of overall cancer (adjusted hazard ratio [aHR], 2.51; 95% confidence interval [CI], 2.33-2.70). Lung cancer showed the highest aHR (aHR, 7.57; 95% CI, 6.58-8.71), followed by multiple myeloma, cervical cancer, lymphoma, cancer of central nervous system, breast cancer, liver cancer, colorectal cancer, pancreatic cancer, prostate cancer, thyroid cancer, and gastric cancer. Conclusion: Patients with IPF had a higher risk of overall cancer compared to controls without IPF. Greater attention should be paid to cancer development in patients with IPF.

Prevalence and prognostic impact of various malignant disease in patients with idiopathic pulmonary fibrosis

이홍열,조재영,이진우,박영식,이창훈,이상민,임재준,유철규,김영환,한성구,최선미 대한결핵 및 호흡기학회 2018 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.126 No.-

Introduction: The aim of our analysis was to determine the prevalence of various malignant diseases in patients with idiopathic pulmonary fibrosis (IPF) and its prognostic impact. Method: We retrospectively reviewed all medical records and chest CT images of patients diagnosed with IPF between January 2001 and December 2015. They were divided into three groups: IPF without cancer (n=445), IPF with lung cancer (n=68), and IPF with cancer other than lung cancer (n=66). Results: A total of 579 IPF patients were included, of whom 133 (23%) had cancer. The three most common cancers were lung (11.6%), gastric (2.2%), and colorectal cancer (1.9%). Survival was significantly worse among IPF patients with lung cancer than among those without cancer (HR=1.927, 95% CI, 1.398-2.658) or those with any other cancer (HR=1.597, 95% CI, 1.047-2.436). Survival rates did not differ between IPF patients without cancer and those with any other cancer. Number of visits to emergency room (ER) and admissions to intensive care unit (ICU) per year were significantly higher among IPF patients with cancer than in those without cancer. However, these values were similar between IPF patients with lung cancer and those with any other cancer. The annual rate of decline in %predicted FVC and DLCO did not differ among groups. Conclusion: Lung cancer is the most common cancer among IPF patients and has a worse impact on survival than other cancers. Annual ER visits and ICU admissions are significantly more frequent among IPF patients with any type of cancer than among those without cancer.

Effect of a rapid response team on code rates and in-hospital mortality in medical wards

이홍열,이진우,이상민,김설희,양은진,주영신,이현주,이한나,류호걸,오승영,하은진,고상배,조재영 대한결핵 및 호흡기학회 2018 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.126 No.-

Objective: To determine the effect of a rapid response team (RRT) implementation on code rates and in-hospital mortality in medical wards. Method: This retrospective study included adult patients admitted to medical wards at Seoul National University Hospital between 12 July 2016 and 12 March 2018. A total of 4,718 patient admissions in 10 months before RRT implementation and 4,168 patient admissions in 10 months following RRT implementation were evaluated. Our RRT only works during daytime hours (7 AM to 7 PM) on weekdays. We compared code rates and in-hospital mortality between pre- and post-RRT implementation. Results: There were 76.5 RRT activations per 1,000 admissions and the most common reasons for RRT activation were tachypnea or hypopnea (38%), hypoxia (29%), and tachycardia or bradycardia (19%). After RRT implementation, code rates from medical wards during daytime significantly decreased from 3.18 to 0.96 per 1,000 admissions (adjusted odds ratio [aOR], 0.31; 95% confidence interval [CI], 0.09-0.86; p=0.038). However, code rates from medical wards during off time did not differ between the pre-RRT and post-RRT periods (2.12 vs 2.88 per 1000 admissions; aOR, 1.40; 95% CI, 0.60-3.31; p=0.436). In-hospital mortality significantly decreased from 5.26 to 4.25 per 100 admissions after RRT implementation (aOR, 0.82; 95% CI 0.67-1.00; p=0.048). Conclusion: Implementation of RRT was associated with a significant reduction in both code rates during daytime and in-hospital mortality in medical wards.

太陽熱 利用 基本 System과 Solar House의 現況 考察

李洪烈 釜山工業大學校 1976 論文集 Vol.17 No.-

에너지자원의 대부분을 수입에 의존하는 우리나라에서는 보다 더 태양열이용을 위한 적극적인 연구개발의 필요성에 대하여 재론의 여지가 없지만 외국의 경우를 보면 실용의 영역에 도달하였지만 현재까지도 큰 매력을 느끼지 못한 것은 시스템 전체의 Initial cost 및 전체의 Runing cost의 양면을 고찰했을 때 화석연료에 의한 일반설비비보다 많으므로 Heat pump 및 급탕 시스템이 성 에너지, 열적 쾌감성의 향상에 기여하고 또 연료절감으로 수년간에 거쳐 상각이 되어도 일시에 다액의 공사비를 투자하기 곤란한 관계로 많이 보급되지 않는 실정이다. 태양열이용을 위한 장기적 조치로서 우선 도시건물이 일조침해를 받지 않도록 지구별로 법규상의 보장을 해줄 필요가 있을 것 같다. 또 태양열에 의해 난냉방을 하는 건축물에는 열부하가 적은 구조로 설계하는 것이 새로운 에너지개발보다도 선결문제이고 또 용이한 점임을 명심해야 하겠다. 국가적 차원에서 오늘날의 심각한 에너지 사정을 볼 때 그 절감을 위한 시책에 좀더 과감해야 할 것 같다. 직 태양열이용 시설을 하는 건축물에는 시설비의 일부를 국가에서 부담해 주고 또 면세특혜를 주는 등 특별한 배려를 함으로써 수요자의 의욕을 높이고 그에 따라 보급범위를 확대하며 동시에 하루속히 태양열난냉방에 필요한 우수한 국산기기를 염가로 대량생산하여 방출되는 날이 가까운 장래에 이루어 지도록 이 방면에서 활약하고 있는 기관이나 기술자들에게 많은 지원이 있기를 바란다.

The characteristic of decision making withdrawal or withholding in patients who were expired according to The Hospice, palliative Care, and Life-sustaining treatment decision-making Act

이홍열,김성현,양지영,김미영,이영민,이현경 대한결핵 및 호흡기학회 2018 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.126 No.-

Introduction: The Hospice, palliative Care, and Life-sustaining treatment decision-making Act was come into force in February 2018 in Korea. We reviewed the characteristics of patients who withdraw or withhold life-sustaining treatment in tertiary care hospital. Methods: Retrospective data were analyzed for the period from February to August 2018. We review patients who had expired according to The Hospice, palliative Care, and Life-sustaining treatment decision-making Act. Included were 33 patients who had made a decision to withdraw or withhold life-sustaining treatment. 9 patients were discharged after filling in the Physician Orders for Life-sustaining Treatment (POLST). Another 24 patients were expired as withdrawal or withholding life-sustaining treatment. Result: 14 of 24 patients had the end stage of disease. Last of them were critically ill patient who were finally judged ‘the last days of life’ for dying patient care. Patient who had preexisting POST were 6. One Patient had advanced directive. Life-sustaining decision making for another 17 patients were made by their family members. 9 decisions by presumption of patients’ living will and 8 decisions by agreement of all family members. Only 4 patients were expired according to withhold the life-sustaining treatment. Others were expired according to withdrawal life-sustaining treatment. Conclusion: Patients who were expired according to The Hospice, palliative Care, and Life-sustaining treatment decision-making Act were expired by withdrawal life-sustaining treatment. The decision were made by family members.