폐석재와 석분을 사용한 식생블럭 제품 개발

성찬용,류능환,연규석,윤준노,김영익,남기성,노경희,박일순 강원대학교 부설 석재복합신소재 제품연구센터 2002 석재연 논문집 Vol.7 No.-

본 연구는 폐석재와 석분을 사용하여 친환경적인 식생블럭 제품을 개발하기 위하여 폐석재의 입경과 석분의 첨가량을 각각 3종류씩 총 9종류의 식생블럭에 대하여 단위중량, 공극율, 투수량, 압축강도, 쪼갬인장강도, 휨강도, 내산성, 알카리농도에 대하여 구명하였다. 단위중량, 강도, 내산성은 골재의 입경이 작을수록 석분의 혼입량이 많을수록 크게 나타났으며, 공극율과 투수량은 작게 나타났다. 강도는 중성화 처리 유무에 따라 4∼5% 정도의 미소한 차이가 나타났다. 알카리 농도는 중성화 약품처리, 수중용출, 야외폭로 순으로 효과가 크게 나타났으며, 이는 식생블럭의 중성화 방법 선택에 매우 중요한 내용이라 할 수 있다. 또한, 식생상태는 공극율과 골재의 입경이 큰 식생블럭이 생육에 유리한 것으로 나타났다. This study was performed to develop the environment-friendly plantable block and to evaluate unit weight, void ratio, permeability, strength, acid-resistance and value of pH by the change of the grading of waste stone and the addition amount of stone dust. The unit weight, strength, acid-resistance is increased with small size of waste stone with increase of the addition amount of stone dust. But, the void ratio and permeability is decreased. The strength of neutral plantable block is decreased approximately 4-5% than that of the normal plantable block. The decreased effect of pH increased in order to neutral treatment, underwater leaching and field exposure. It is very important contents in neutral method selection of plantable block. Also, the planting state is grown rapidly with increase of the void ratio and of the waste stone size, approximately.

지방정부 문화관광축제 방문객 특성의 만족도 및 소비지출 영향분석

기노용(Ki, No-Yong)(奇老庸),한상우(Han, Sang-Woo)(韓尙祐) 한국지방정부학회 2011 지방정부연구 Vol.15 No.1

본 연구는 지방정부에서 개최하는 문화관광축제의 긍정적 편익을 얻기 위한 전략수립의 기초자료를 제공하기 위하여 지방정부의 문화관광축제에 참가하는 방문객의 축제에 대한 만족도에 영향을 미치는 만족요인들과 함께 방문객특성, 그리고 방문객의 인구사회학적 특성이 방문객의 축제방문에 소요되는 따른 각각의 비용지출에 영향력을 미치는지의 여부를 실증적으로 분석하였다. 분석결과, 종속변수인 축제만족도에 대한 영향요인으로는 축제시설, 축제내용, 축제접근성, 결혼여부, 방문형태, 축제상품, 학력, 연령, 체류시간의 순으로 영향을 미치는 것으로 나타났다. 이 밖에 Tobit 분석에 의한 총지출, 식음료비, 유흥비, 쇼핑비, 기타비의 경우에 있어서는 축제속성과 축제방문특성, 인구통계학적 특성에 속하는 독립변수들의 영향력이 상이하게 나타났다. In this study, the decisive factors of satisfaction and the expenditure of visitors who participated in the Yeoncheon Jeongok-ri Paleolithic festival are analysed in order to provide local governments with strategies for successful local festivals for the positive benefit of local government. This study conducted an empirical analysis through survey by selecting the main variables as the festival satisfactory attributes, festival visiting features, and demographic features of visitors. In so far as the decisive factors for satisfaction are concerned, festival satisfactory attributes such as festival content, festival facilities, festival accessibility, and festival products had a significant impact on festival satisfaction. Besides, festival satisfactory attributes, festival visiting features, and demographic features had a positive or negative significant impact on visitors’ expenditures such as total expenditure, fees for hotel, drinking and eating, entertainment, and shopping. The results of this study show that the local government should develop programs to increase visitor expenditures by considering the types and themes of festivals, regional features, and visitors’ features, along with plans to vitalize their festivals.

Impact of laparoscopic radical hysterectomy on survival outcome in patients with FIGO stage IB cervical cancer : A matching study of two institutional hospitals in Korea

( Young Im Kim ),( Se Ik Kim ),( Maria Lee ),( Hee Seung Kim ),( Dong Hoon Suh ),( Kidong Kim ),( Hyun Hoon Chung ),( Jae Hong No ),( Jae-weon Kim ),( Noh Hyun Park ),( Yong-sang Song ),( Yong Beom Ki 대한산부인과학회 2019 대한산부인과학회 학술대회 Vol.105 No.-

Objective: To compare survival outcomes of primary laparoscopic radical hysterectomy (LRH) and open radical hysterectomy (ORH) in patients with FIGO stage IB cervical cancer. Methods: We retrospectively identified stage IB1-IB2 cervical cancer patients who received either LRH (n=343) or ORH (n=222) at two tertiary institutional hospitals between 2000 and 2018. To adjust for confounders, we conducted Mahalanobis distance-based sample matching for stage, histology, cervical mass size, parametrial invasion, and lymph node metastasis. Then, survival outcomes were compared between the matched groups. Through the independent matching processes, we narrowed the study population to stage IB1 patients and stage IB1 patients with tumor size ≤2 cm on pre-operative MRI. Results: After matching, LRH group showed poorer progression-free survival (PFS) than ORH group (3-year: 85.4% vs. 91.8%; P=0.036), whereas no significant difference in overall survival (OS) was found. Regarding recurrence patterns, no significant differences in the incidences of pelvic, retroperitoneal lymph node and abdominal recurrences, or distant metastasis were observed between the two groups. Among the matched patients with stage IB1 who had cervical mass size ≤2 cm, the LRH and ORH groups showed similar PFS (3-year: 90.0% vs. 93.1%; P=0.8) and OS (5-year: 98.6% vs. 96.4%; P=0.6). Conclusion: Despite the retrospective design, our matched cohort study suggests that ORH might be preferable for the surgical treatment of FIGO stage IB cervical cancer. However, in stage IB1 patients with tumor size ≤2 cm, LRH might be applicable, as equivalent outcomes were found regardless of the surgical approach. Further prospective studies are warranted.

Characteristics of a Cutoff Cavity Probe Applicable to Crack Detection Using the Forced Resonance Microwave Method

Ki-Chai Kim,Jong-Woo Kim,Jae-Yong Kwon,No-Weon Kang 한국전자파학회JEES 2020 Journal of Electromagnetic Engineering and Science Vol.20 No.4

This paper presents the current characteristics inside a cutoff cavity slot probe applied to crack detection using the forced resonance microwave method (FRMM). Crack detection using FRMM has two stages: preparation and detection. In the preparation stage, the current characteristics inside the probe with a shorting plate are important for determining the crack signal and detection sensitivity. The cutoff cavity probe produces a forced resonance by adjusting a control element. There are two kinds of forced resonance: series resonance (SR) and parallel resonance (PR). Four types of current characteristics are applied to crack detection using FRMM: SR, the region around SR, the region around PR, and non-resonance. These current characteristics are discussed from the point of view of current change for crack detection. The experimental results are compared with the theoretical results to check the current state inside the cutoff cavity probe.

Bone formation with alloplastic graft substitutes in critical-sized rat calvarial defects

( Ki Pyo No ),( Su Gwan Kim ),( Ji Su Oh ),( Jong Won Jung ),( Sung Soo Yang ),( Sung Yong Lee ),( Jin Sung Park ),( Sung Chul Lim ),( Mi Ae Jeong ) 조선대학교 치의학연구원 2011 Oral Biology Research (Oral Biol Res) Vol.35 No.2

The purpose of this study was to evaluate whether the level of bone formation differed according to the ratio of the hydroxyapatite (HA) and beta-tricalcium phosphate (β-TCP) components. Materials and Methods: In the cranial area of 60 rats, bone grafts were performed using four bone graft materials with different ratios of HA/β-TCP: (1) unfilled defect, (2) HA (100%), (3) HA (70%)/β-TCP (30%), (4) HA (30%)/β-TCP (70%), and (5) β-TCP (100%). The rats were sacrificed after 4 weeks or 8 weeks, and the bone formation area was evaluated under a light microscope. Results: In the 4-week groups, the bone formation area in the rats grafted with β-TCP (100%) was 0.75±0.21 mm2, and slightly larger bone formation areas were observed than in other groups; nonetheless, these values were not statistically significant in comparison with the other groups. Similarly, significant differences were not shown among any other groups. In the 8-week groups, in the rats grafted with HA (100%) and HA (30%)/β-TCP (70%), bone formation was observed to be 2.60±1.03 mm2 and 2.56±0.93 mm2, respectively. Thus, more abundant bone formation was observed in these two groups than in the other three groups, and this difference was statistically significant. Conclusion: Based on the results, the amount of new bone formation is greatest when bone grafts are performed using the graft materials HA 100% or HA (30%)/β-TCP (70%); thus, good bone formation outcomes are expected when using these materials in humans.

Association of nursing-documented ambulation with length of stay following total laparoscopic hysterectomy for benign gynecologic disease

( Ki Dong Kim ),( Soo Young Yoo ),( Eun Joo Yang ),( Jae Hong No ),( Hee Hwang ),( Yong Beom Kim ) 대한산부인과학회 2013 Obstetrics & Gynecology Science Vol.56 No.4

Objective: The objective was to examine the association of postoperative physical activity with length of stay in patients who received total laparoscopic hysterectomy for benign gynecologic disease. Methods; The case group was composed of 70 patients who entered a critical pathway for elective total laparoscopic hysterectomy from 2009 to 2012 and were discharged behind schedule. The control group was selected from patients who were discharged on schedule, and matched to cases using 1:3 ratio propensity score matching. We compared the number of nursing-documented ambulation of the case group with that of control group. Results; Year of surgery, age, body mass index, endometriosis, systemic disease, previous abdominal surgery and current medication were well balanced between case and control groups. The number of patients with nursing-documented ambulation in case group (19%) was not different from that in control group (11%). Conclusion; Postoperative physical activity measured by nursing-documented ambulation was not associated with length of stay in patients who underwent an elective total laparoscopic hysterectomy for benign gynecologic diseases.

일부 염색업체에 종사하는 근로자의 작업환경 및 보건상태에 관한 연구

기노석,안청자,고대하,이정상,이유용,이재형,염정호,신용일 大韓産業醫學會 1994 대한직업환경의학회지 Vol.6 No.1

1992년 4월 1일부터 동년 10월 30일까지의 연구 기간 중 면직물 염색업체의 작업환경과 근로자들의 건강실태 및 보건관리 상태의 개선을 목적으로 100-200명 규모의 중소기업을 조사 대상 업체로 선정하여 THI를 이용한 근로자들의 건강상태, 작업에 사용되는 각종 화학물질, 작업환경, 보건관리실태 및 근로자들의 건강진단등 염색업 특유의 반응 유무에 대한 검증 등을 조사하여 다음과 같은 결론을 얻었다. 염색업체 근로자 324명의 일반적 특성은 남자가 57.5%, 여자가 42.5%였고, 연령은 남자가 30대에서 37.1%, 여자가 20대에서 34.1%로 가장 높게 나타났다. 염색업체에서 사용량이 많은 화학물질은 과산화수소, 아염소산나트륨, 하이포황산나트륨, 하이드로황산나트륨, 가성소다, 빙초산, 소다회 및 황산나트륨, 등이었고 품목별 분리보관을 하고 있었다. 사용량이 많은 염료는 Suncion Blue H-ERD, Levafix Brilliant Red E-4BA, Suncion Yellow E-3G 및 Remazol Black B등으로 모두 azo기(R-M=N-r')를 1개 이상 포함하고 있었다. 작업환경의 측정결과 실험군에서 소음 75-92 dB(A),분진 0.2-1.3mg/㎥, 염소 0.2-1.6ppm, 초산 및 개미산은 미량 검출되었으며 대조군에선 소음 82-95dB(A), 분진 0.02mg/㎥이 검출되었다. 건강검진 결과에 나타난 유소견자는 주로 40대 이상 고연령층의 근로자로서 유소견의 내용도 고혈압, 간장질환, 순환기계 질환등의 만성퇴행성 질환이 대부분이었다. 안전사고 및 재해현황 중 가장 많았던 손상부위는 수지부로서 골절, 열상, 화상등이었고 실족추락에 의한 뇌진탕 사망의 경우가 있었다. THI 설문조사 결과 직종별 비교에서 호흡기와 공격성 척도에서 대조군에 비해 높았으나 통계적으로 유의하지 않았고(p>0.05), 작업경력별 분류에서도 유의한 차이를 보이지 않았다. 보건에 관한 업무는 주로 의무실에서 행해지고 있었고 보건관리자로 인근개원의가 선임되어 있었으며, 건강검진의 실시와 안전 및 보건에 관한 사내 교육은 연간 2회 정도 실시하고 있었다. 이상의 결과를 살펴보면 화학물질의 운반, 배합하는 근로자들은 개폐시 가스상 물질로부터 안면과 손 및 팔부위를 보호할 수 있는 장갑과 마스크, 보안경 등의 보호구의 착용을 의무화하여야 하고, 추후 염료에 대한 환경농도 규제치 및 객관적 분석방법의 설정이 요구된다. This study was carried out to evaluated the actual conditions of working environment and health status of workers and search more effective health management method of workers in some dyeing factories. This study was conducted from April 1 to October 30, 1992, for 426 workers in two dyeing factories and an electric wire making factories. Among 324 workers in two dyeing factories, 57.5% were male and 42.5% were female. Most of the engaged workers had less than 2 years of working carrier and aged 30 years or below. The used chemical substances exceeding 1 ton per a month were sodium hydroxide(NaOH), hydrogen peroxide (H₂O₂), sodium cholrite (NaCLO₂), sodium sulfate (Na₂SO₄), sodium carbonate (Na₂CO₃), and sodium hydrosulfite (Na₂S₂O₄). The used chemical dyes exceeding 100㎏ per a month were suncion blue H-ERD, levafix brilliant red E-4BA, suncion yellow E-3G, and remazol black B. As the allowable exposure time by governmental threshold limit valuses to industrial noise levels in 90 dBA for 8 hours. Average noise levels of the individual plants were ranged from 75 to 95 dB (A). The TLV for total cotton dust is 2.0mg/㎥. Average cotton-dust concentration in these working environmental air were ranging from 0.2-1.3mg/㎥. The TLV chlorine, acetic acid and formic acid are 1 ppm, 10 ppm & 5ppm, respectively. The range of chlorine, and acetic and formidc acid concentration in these working environmental air were detected 0.2-1.6 ppm and at trace level. The accident by chemical substances and dyes was not found on these working environment. From the physical examination and Todai Health Index scores results, there was no significant correlation between the used chemical substances and the diseases, such as bronchial asthma, other hyperreactive respiratory diseases and contact dermatitis. It was suggested that long term survey should de perfomed to detect the occupational health problem on these working environment.

Contributed Papers ( Poster Abstracts ) : Oxyacetamide Derivatives of 1,2,4 - Oxadiazole and Its Selective Herbicidal Activity

Yong Ki Min,Bum Tae Kim,Young Sup Kim,No Kyun Park,Kwang Yun Cho,Howa Jeong 한국응용생명화학회(구 한국농화학회) 1994 한국응용생명화학회 학술발표회 Vol.1994 No.2

Contributed Papers ( Poster Abstracts ) : Synthesis and Anti - Fungal Activity of β - Fluorovinyl Sulfide and Sulfone Derivatives

No Kyun Park,Bum Tae Kim,Yong Ki Min,Young Sup Kim,Kwang Yun Cho,In Howa Jeong 한국응용생명화학회(구 한국농화학회) 1994 한국응용생명화학회 학술발표회 Vol.1994 No.2

The error analysis of field size variation in pelvis region by using immobilization device

Ki-Hwan Kim,No-Hyun Kang,Dong-Wuk Kim,Jun-Sang Kim,Ji-Young Jang,Yong-Eun Kim,Jae-Sung Kim,Moon-June Cho 대한방사선방어학회 2000 방사선방어학회지 Vol.25 No.1