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일부 생산직 근로자의 소음과 사회심리적 요인이 혈압에 미치는 영향
박종구,강명근,차봉석,고상열,장세진,고상백 大韓産業醫學會 1997 대한직업환경의학회지 Vol.9 No.2
This study was conducted to assess the effects of noise exposure and psychosocial factor on blood pressure in manufacturing workers. The study subjects are 414 workers(243 males, 171 females) employed at the noisy department. The mean age of low exposed group(<85dB) was 34.65±9.53 years, and that of high exposed group(≥85dB) was 36.37±11.15 years. The difference in mean age was not significant. The mean and distribution of working duration, smoking status, drinking status were not significantly different between two groups. The mean systolic blood pressure of the low exposed group was 120.01±12.06 mmHg, and that of high exposed group was 126.27±13.84mmHg. The mean diastolic blood pressure of the low exposed and the high exposed group were 77.18±10.83 mmHg, and 83.46±11.22mmHg respectively. These differences of blood pressure were statistically significant(p<0.05). The workers in noisy department have significantly less work environmental satisfaction, higher job demand, and higher social support. The mean values of psychosocial distress were higher in the workers of the noisy department, but the difference was not statistically significant. This study was to speculate whether the work environmental satisfaction and social support modify the association between the noise exposure level and the blood pressure. The result showed that work environmental satisfaction could not modify the association between the blood pressure and the noise exposure. Social support at work did not modify the association. Furthermore, we evaluated the high job strain from a combination of ratio of the high job strain group for hypertension in diastolic blood pressure were statistically significant, but not in systolic blood pressure. Hierarchical multiple regression analysis was used to determine whither the independent variables contributed to explaining the blood pressure. After controlling for possible confounders, we found that the noise exposure level was a correlated of the diastolic blood pressure. But no association between the noise exposure level and the systolic blood pressure. No significant result was found for psychosocial factor.
광섬유센서를 이용한 선박 및 해양기자재의 안전진단 기술
이세창(Sei Chang Lee),김종호(Jong Ho Kim),김중열(Jung Yul Kim),김유성(Yoo Sung Kim) 한국마린엔지니어링학회 2006 한국마린엔지니어링학회 학술대회 논문집 Vol.2006 No.-
선박 및 해양기자재의 안전 진단을 위한 기존의 기술은 점 센서(point sensor)를 이용한 변형률 측정 기술이 대부분이라 할 수 있다. 본 논문은 기존의 기술보다 효율적으로 응용될 수 있는 광섬유 센서를 이용한 분포 개념의 온도 및 변형률 측정(DTSS: Distributed Temperature & Strain Sensing) 기술에 대해 소개하고 있다. 이 기술은 선체 응력 모니터링, 해양 구조물 안전진단, subsea flowline 모니터링, platform의 riser 안정성, umbilical 모니터링 등에 활용될 수 있다.
Min, Yul Ha,Lee, Jong Won,Shin, Yong-Wook,Jo, Min-Woo,Sohn, Guiyun,Lee, Jae-Ho,Lee, Guna,Jung, Kyung Hae,Sung, Joohon,Ko, Beom Seok,Yu, Jong-Han,Kim, Hee Jeong,Son, Byung Ho,Ahn, Sei Hyun JMIR Publications Inc. 2014 Journal of medical Internet research Vol.16 No.5
<P><B>Background</B></P><P>Improvements in mobile telecommunication technologies have enabled clinicians to collect patient-reported outcome (PRO) data more frequently, but there is as yet limited evidence regarding the frequency with which PRO data can be collected via smartphone applications (apps) in breast cancer patients receiving chemotherapy.</P><P><B>Objective</B></P><P>The primary objective of this study was to determine the feasibility of an app for sleep disturbance-related data collection from breast cancer patients receiving chemotherapy. A secondary objective was to identify the variables associated with better compliance in order to identify the optimal subgroups to include in future studies of smartphone-based interventions.</P><P><B>Methods</B></P><P>Between March 2013 and July 2013, patients who planned to receive neoadjuvant chemotherapy for breast cancer at Asan Medical Center who had access to a smartphone app were enrolled just before the start of their chemotherapy and asked to self-report their sleep patterns, anxiety severity, and mood status via a smartphone app on a daily basis during the 90-day study period. Push notifications were sent to participants daily at 9 am and 7 pm. Data regarding the patients’ demographics, interval from enrollment to first self-report, baseline Beck’s Depression Inventory (BDI) score, and health-related quality of life score (as assessed using the EuroQol Five Dimensional [EQ5D-3L] questionnaire) were collected to ascertain the factors associated with compliance with the self-reporting process.</P><P><B>Results</B></P><P>A total of 30 participants (mean age 45 years, SD 6; range 35-65 years) were analyzed in this study. In total, 2700 daily push notifications were sent to these 30 participants over the 90-day study period via their smartphones, resulting in the collection of 1215 self-reporting sleep-disturbance data items (overall compliance rate=45.0%, 1215/2700). The median value of individual patient-level reporting rates was 41.1% (range 6.7-95.6%). The longitudinal day-level compliance curve fell to 50.0% at day 34 and reached a nadir of 13.3% at day 90. The cumulative longitudinal compliance curve exhibited a steady decrease by about 50% at day 70 and continued to fall to 45% on day 90. Women without any form of employment exhibited the higher compliance rate. There was no association between any of the other patient characteristics (ie, demographics, and BDI and EQ5D-3L scores) and compliance. The mean individual patient-level reporting rate was higher for the subgroup with a 1-day lag time, defined as starting to self-report on the day immediately after enrollment, than for those with a lag of 2 or more days (51.6%, SD 24.0 and 29.6%, SD 25.3, respectively; <I>P</I>=.03).</P><P><B>Conclusions</B></P><P>The 90-day longitudinal collection of daily self-reporting sleep-disturbance data via a smartphone app was found to be feasible. Further research should focus on how to sustain compliance with this self-reporting for a longer time and select subpopulations with higher rates of compliance for mobile health care.</P>
Computed Tomography of Head Injuries : An Analysis of 310 Cases
Kim, Choon Yul,Yoon, Sei Chul,Bahk, Yong Whee CATHOLIC MEDICAL CENTER 1981 Bulletin of the Clinical Research Institute Vol.9 No.1
The authors reviewed the CT scans of 310 patients with acute head injury in order to assess the type and location of brain lesions, the relationship between the CT densities of hematomas and their stage, the shape and mass effect of the extra-axial hematomas, and the effect of contrast enhancement. 1. Of all 310 cases of the head injuries, epidural hematoma was 13.5%, subdural hematoma was 8.7%, subdural hygroma was 10%, cerebral contusion was 39%, hydrocephalus and atrophy was 3.9% and negative finding was 24.9% (Table 1). 2. The extraaxial hematoma was located on the right side in 49.3% and the left side in 39.1% and bilaterally in 11.6%. Therefore unilateral location was much more frequent than bilateral one. 3. The extra-axial hematoma was getting decreased in density as time lapsed (Table 2). 4. The shape of epidural hematoma was biconvex in 88.1% and pianoconvex in 11.9%. 5. The shape of subdural hematoma was crescent in 88.9% and biconvex in 11.1% in chronic stage. 6. The mass effect of the extraaxial hematoma slowly decreased as time lapsed. 7. The extra-axia1 hematoma was enhanced by the contrast media in all acute, subacute and chronic stage as we11 as in the cerebral contusion, but there was a tendency that the contrast enhancement of hematoma increased as time lapsed.
진행성 병기의 소세포폐암에 대한 Etoposide , Cisplatin 복합화학요법치료의 효과
서정열(Jung Yul Suh),정현식(Hyun Sik Jeong),이승세(Seung Sei Lee) 대한내과학회 2001 대한내과학회지 Vol.61 No.6
N/A Background : Small cell lung cancer (SCLC) disseminates early and has poor prognosis. However, SCLC is highly chemosensitive, thus chemotherapy has been established as the primary mode of treatment. This study evaluated the efficacy and toxicity of etoposide in combination with cisplatin in the treatment of extensive stage small cell lung cancer. Methods : Thirty four patients (28 males, 6 females) with previously untreated extensive stage small cell lung cancer were treated with etoposide at a dose of 100 mg/m2, IV on days 1-3 with cisplatin at 100 mg/m2, IV on day 1. The median age was 63 (range 41∼80). This combination chemotherapy was administered every 3-4 weeks. Response rate, response duration, survival, and toxicity were evaluated.Results : The response rate was 50%. The median survival time was 29 weeks. The median response duration was 17.2 weeks in responders. The toxicity was acceptable. Conclusion : This study illustrated that the combination of etoposide and cisplatin is effective in the treatment of extensive stage small cell lung cancer, and can be administered with acceptable toxicity. Although this study was not designed to be a formal comparative trial, the efficacy and toxicity observed with this regimen were found to be comparable to previous reports.(Korean J Med 61:590-596, 2001)
Lee, Jo-Woong,Chang, Sei-Hun,Choo, Kwang-Yul,Yoon, Jae-Shin,Chung, Won-il Korean Chemical Society 1987 Bulletin of the Korean Chemical Society Vol.8 No.3
A new method of measurement of pore volume distribution in a porous material by adsorption of gases is proposed. In the newly proposed method the use of spherical molecules with relatively large molecular weight as adsorbates is strongly recommended to eliminate the troubles caused by stereospecificity and low boiling point of widely used $N_2$. It is also claimed that the universal t-curves that have been widely used since proposed by de Boer et al. must be replaced by the flat-surface isotherms that can be derived from the theory proposed by Chang et al. The results of analysis of pore volume distribution based on the method described in this paper are found to be reasonable and satisfactory.