지베렐린과 에세폰의 葉面撒布가 '美白' 복숭아의 熟期와 品質에 미치는 影響

김영호,윤철구,임상철,김학현,이철희,최관순,김선규 충북대학교 농업과학기술연구소 1999 農業科學硏究 Vol.16 No.-

In order to obtain the basic data for artificial maturity control of 'Mibaek' peach, GA and ethephon were foliar sprayed 4 weeks prior to harvest, and their effects on fruit maturity and quality were examined. GA and ethephon tended to decrease the fruit weight except 100mg ㆍ L-1 GA+50 to 100mg · L-1 ethephon treatment. GA increased the fruit firmness, and ethephon at higher concentration increased the fruit drop. Harvest date was advanced for 7 to 8 days by ethephon while was delayed for 6 to 8 days by GA treatment, regardless of concentration.

과수 조류피해 방지에 관한 연구

김영호,윤철구,임상철,손인창,박재혁,김동환,김선규 충북대학교 한국과학재단 지정 첨단원예기술개발 연구센터 2002 연구보고서 Vol.6 No.-

새로운 저비용 고효율 조류 피해 방지법의 개발을 위한 기초자료를 얻기 위하여, 현재 사과, 배 과수원에서 사용되고 있는 조류피해 방지 방법들의 정확한 효과를 서로 비교 검토하고, 아울러 충북지역 과수 재배 농가들을 대상으로 유해조류에 의한 피해 실태와 경제성 있는 조류 피해방지 방법에 대한 설문조사를 병행 실시한 결과는 다음과 같다. 1. 조류피해는 방조망 설치에 의해서만 완전히 방지할 수 있었으며, 조류 피해율별 손익계산 결과를 참고하여 이익이 있을 때는 표준방조망을 설치하고, 그렇지 않을 경우에는 설치비가 저렴하며 농가에서 간단히 시공할 수 있는 간이방조망 설치가 더 경제적인 것으로 판단되었다. 도내 과수 농가의 조류피해는 지역 간에 큰 차이가 있었으며, 음향적 방제인 버드가드와 보호봉지인 망사봉지에 의한 방제가 가장 효과적이었다. 그러나 버드가드는 높은 설치비용이 문제되므로, 퇴치 효과가 비슷하거나 더 우수하면서 저렴한 한국식 음향 기구를 개발할 필요가 있는 것으로 판단되었다. 보호봉지인 UV 봉지와 플라스틱 보호캡 및 망사봉지 처리는 품종에 관계없이 피해를 현저하게 감소시켰으나, 과실의 착색 등 품질에 미치는 영향에 대해서 추가적인 연구와 검토가 필요한 것으로 생각되었다. To obtain basic data for low cost-high efficiency control methods for bird damage, the available control methods currently in use mostly in Chungbuk Province were tested on site, and the control efficiency was compared. Also, a comprehensive survey of actual bird damage and the control methods on model apple and pear growers in Chungbuk Province was conducted. The results are summarized as follows. The perfect control for bird damage was possible only through bird net, it was recommended that profit-and loss account must be considered before installing bird net, and when the 'standard bird net' does not come up to break-even point, more economic and convenient 'simplified bird net' should be a alternative. Actual extent of bird damage varied according to the locality, and imported acoustic apparatus BirdGard^R, development of our own system with superior or same quality and reasonable price is necessary. Fruit bags such as UV bags, plastic protective caps, and net bags were highly effective for bird damage control, irrespective of fruit species and cultivar, but further study to resolve some problems such as poor coloration caused by bagging is necessary.

2,4-D 處理가 'Harcot' 살구와 '美白' 복숭아의 果實 成熟과 品質에 미치는 影響

윤철구,김영호,임상철,김학현,이철희,최관순,김선규 충북대학교 농업과학기술연구소 1999 農業科學硏究 Vol.16 No.-

Effect of 2,4- D application on the fruit maturity and quality of 'Harcot' apricot and 'Mibaek' peach was examined. Leaf area of 'Harcot' apricot was not affected by 2,4-D while that of 'Mibaek' peach was increased by 35mg · L-1 2,4-D. Application of 2,4-D at 35mgㆍL-1 increased the fruit weight of both species, and that of 'Harcot' was doubled. Soluble solids content of 'Harcot' was decreased by 2,4-D while that of 'Mibaek' was not affected. Fruit maturity of 'Harcot' and 'Mibaek' was enhanced for respective 4 and 1 day by 2,4-D application. Percent fruit cracking of 'Harcot' apricot was decreased by 35mg · L-1 2,4-D.

산재보상을 신청한 뇌심혈관질환의 특성 분석

유재홍,하은희,김수근,김정연,김용규,이의철,이철호,손준석 대한산업의학회 2007 대한직업환경의학회지 Vol.19 No.1

목적: 이 연구는 뇌 · 심혈관 질환으로 업무상재해를 신청한 사례 중에서 승인된 사례와 불승인된 사례의 특성을 비교하여 뇌 · 심혈관 질환의 업무상 재해여부를 판단하는데 필요한 기초 자료를 제공하고자 한다. 방법: 2000년부터 2004년까지 근로복지공단에 업무상 재해로 요양이 신청되어 승인여부가 결정된 뇌 · 심혈관 질환자 12,309명을 대상으로 하였다. 승인여부와 관련된 특성을 확인하기 위해 연도별, 업종별, 규모별, 직업별, 성별, 연령별, 질환별, 생존유무별 그리고 기존질환 유무에 대하여 카이제곱 검정과 다변량 로지스틱 회귀분석을 이용하였다. 결과: 다변량 로지스틱 분석에서 뇌 · 심혈관 질환의 불승인에 대한 승인의 비차비는 광업을 기준으로 하였을 때에 전기가스 상수도업이 4.18(95% CI=1.43~12.17), 건설업이 2.39 (95% CI=1.22~4.69), 제조업이 2.10 (95% CI=1.08~4.07)이었고, 장치기계조작원 및 조립원에 비하여 서비스 근로자 및 상점과 시장 판매근로자 군이 1.90(95% CI=1.47~2.47), 전문가 군이 1.83(95% CI=1.50~2.23), 기술공 및 준전문가 군이 1.63(95% CI=1.35~1.97), 입법 공무원과 고위 임직원 및 관리자 군이 1.62(95% CI=1.24~2.12)이었고, 여성이 남성에 비하여 1.31(95% CI=1.13~1.53), 심장질환에 비하여 뇌혈관질환이 2.75(95% CI=2.42~3.13), 사망한 경우가 생존한 경우에 비하여 6.01(95% CI=4.89~7.38)이었다. 결론: 우리나라에서 뇌심혈관질환으로 업무상 재해를 신청하는 건수는 증가하고 있고 승인율은 비교적 높았으며 승인에 영향을 미치는 요인으로는 업종, 규모, 직종, 성, 연령, 질환, 생존유무 등이 확인되었다. 특히 업종과 직종에 따라서 승인율의 차이가 큰 것이 어떠한 요인의 영향 때문인지에 대한 검토가 필요하고, 특히 뇌실질내 출혈의 경우에 다른 질환에 비하여 승인율이 매우 높았던 것은 업무수행성에 대한 인정기준의 잘못된 적용의 결과 이므로 시정이 필요하겠다. Objectives: This study was performed to provide fundamental data to judge whether or not cerebro and cardiovascular diseases are work-related, by comparing the characteristics between approved and non-approved cases among the worker's compensation claims. Methods: We collected 12,309 cerebro and cardiovascular disease claims based on the worker's compensation records of the Labor Welfare Corporation from 2000 to 2004. The approved and non-approved cases were analyzed according to factors such as the calendar year, industry, company size, occupation, gender, age group, classification of cerebro and cardiovascular diseases, fatality and underlying diseases. We used x²-test and multivariate logistic regression for the analysis. Results: According to multivariate logistic regression, electricity gas and water supply (OR=4.18, 95% CI=1.43~12.17), construction (OR=2.39, 95% CI=1.22~4.69) and manufacturing (OR=2.10, 95% CI=1.08~4.07) industries had a higher approval rate than mining and quarrying industries. Service workers and sales & marketing department workers (OR=1.90, 95% CI=1.47~2.47), professionals (OR=1.83, 95% CI=1.50~2.23), technicians and associate professionals (OR=1.63, 95% CI=1.35~1.97) and legislators and senior officials and managers (OR=l.62, 95% CI=1.24~2.12) had a higher approval rate than plant and machine operators and assemblers. Female workers had a higher approval rate (OR=1.31, 95% CI=1.13~1.53) than male workers. Cerebrovascular diseases had a higher approval rate (OR=2.75, 95% CI=2.42~3.13) than cardiovascular diseases. Fatal cases had a higher approval rate (OR=6.01, 95% CI=4.89~7.38) than surviving cases. Conclusion: For cerebro and cardiovascular diseases, workers' compensation claims are increasing, approval rates are relatively high and factors such as industry, company size, occupation, gender and fatality are related. A remarkable difference in the approval rate was found according to industry and occupation, suggesting the need for further study to identify which factors influence the approval rate. The approval rate for intracerebral hemorrhage arising in the course of employment (COE) was significantly higher than that arising out of employment (AOE), suggesting the need to correct the approval criteria.

접촉산화수로공법에 의한 수질개선연구

김태철,이규승,오범룡,민진우 忠南大學校 環境問題硏究所 1998 環境硏究 Vol.16 No.-

The effect of non-point source pollution in rural area has much influence on the stream water quality. It is difficult to improve the stream water quality, because of complex pollutant loads technically and because of treatment-cost of the deteriorated water economically. The best way to reduce the non-point source pollution is to check the water quality in the inlet of irrigation channel and control the water quality in the outlet of drainage channel. Stream water quality in the rural area is closely related with the fertilizers, pesticides, and livestock wastewater. Basically the rate of treatment and retention time were estimated for BOD, COD, SS, NH₄-N, T-N, NO₃-N, T-P, PO₄-P using materials such as gravel, crushed stone, useless tire, geotextiles, and concrete block, respectively and also using the combined materials. The rate of treatment for BOD, COD, SS is high, but that for NH₄-N, T-N, NO₃-N, T-P, PO₄-P is low. Optimal retention time in the natural contact channel was 90 minutes.

열복사의 색수차 공간여과를 이용한 레이저 용접 감시기술

김민석,백성훈,박승규,정진만,김철중 한국레이저가공학회 1999 한국레이저가공학회지 Vol.2 No.2

An innovative real-time weld monitoring technique using chromatic filtering of the thermal radiation from a weld pool is developed. This thermal radiation from the weld pool is focused on an aperture and the transmitted thermal radiation is monitored at two wavelengths with high-speed single-element detectors. Due to the chromatic aberration introduced in the focusing optics, the transmittance curve of thermal radiation varies by the wavelength. Owing to this difference in the transmittance, the local variation of thermal radiation from the weld pool can be monitored by processing the two spectroscopic signals from two detectors. In this paper, the algorithms to monitor the laser power on the weld specimen and the focus shift are investigated and the performances of laser power and focus monitoring are shown for a pulsed Nd:YAG laser welding. The monitoring of the weld pool size variation is also discussed.

연성 골수정을 이용한 장관골 개방성 골절의 치료

김동헌,신규철,김경순 건국대학교 의과학연구소 1995 건국의과학학술지 Vol.5 No.-

Multiple fractures of the long bone shaft are not uncommon. There has been much controversies concerning over the method of its treatments due to their frequent complication rate. A randomized, prospective study of Ender nailing for multiple fracture of the long bone shaft of thirty-five cases in twenty-five patients was undertaken at the department of orthopaedic surgery, from January 1989 to Febrary 1995. The results are follows: The average age of the patients was 36-year-old and 20 patients were male and the most common cause was traffic accident. Among 35 cases, comminuted fractures were 10 cases and segmental fractures were 4 and others are transverse, short oblique fractures. Average interval from injury to operation was 2 days. Average bone union time. 1) Humerus : 11 week. 2) Femur : 20 week. 3) Tibia : 18 week. The most common complications were nail migration and superficial infection. The non-union developted in one case. From the result, Ender nailing is one of good treatment modality in open long bone fracture of grade Ⅰ, Ⅱ and selected grade Ⅲa, which provides low risk of complication and allows early weight bearing and ambulation without periosteal stripping in the long bone shaft fracture.

석기암 및 그 인근지역에 분포하는 관속식물상과 주요 식생 현황

양종철, 엄정애, 장창석, 장창기, 이철호, 김규식, 오병운 忠北大學校部設基礎科學硏究所 2006 自然科學硏究 Vol.20 No.-

-본문참고-

견관절 재발성 탈구에서 관절경적 견관절 전방 고정술의 결과 : 2년에서 6년간의 추시 관찰 Two to Six-Year Follow-up

김승호,하권익,노규철,류병담,오일빈 대한스포츠의학회 2003 대한스포츠의학회지 Vol.21 No.1

The purposes of this study were to prospectively evaluate the surgical otucome of the arthroscopic repair of the capsulolabral lesion using suture anchors in al large series of patients who were followed-up for mid-term periods. We evaluated 167 patients with traumatic recurrent anterior shoulder instability after an arthroscopic Bankart repair using suture anchors and nonabsorbable sutures. The mean age at the time of the operation was 25 years (15~46 years). There were 149 male and 18 female patients. Preoperatively and at the time of follow-up(mean, 44 months; range, 24~75 months), three objective outcome measurement tools(Rowe Score, University of California at Los Angeles Shoulder rating scale, and American Shoulder and Elbow Surgeons score) and two subjective measurements(pain and function visual analogue scale) sere assessed. The recurrence rate, range-of-motion, and risk factor for postoperative recurrence were evaluated. All shoulder scores improved after surgery(t-test, p<0.05). According to the Rowe scale, One hundred and thirty patients(78%) showed excellent, 29(17%) good, 6(4%) fair, and 2(2%) poor scored. Overall, postoperative recurrence of the instability was 4%(1 dislocation, 2 subluxation, and 4 positive anterior apprehensions). Postoperative recurrence was related with the glenoid defect of greater than 30%(Gehan's test, p<0.0001). In patients with postoperative instability, the recurrent episode was less frequent and shoulder function was related with the activity were increased after the surgery(t-test, p<0.001). One hundred and fifty-two patients(91%) returned to more than 90%of previous activities. The mean loss of external rotation was 2.0±4.0℃. In contrast to the previous reports on the results of the arthroscopic repair, arthroscopic capsulolabral repair using suture anchors provided satisfactory outcomes in terms of the recurrence, activity, and range of motion.

치근 부착 스트레인 게이지를 이용한 응력 분포 분석

김상철,박규찬 대한치과교정학회 2001 대한치과교정학회지 Vol.31 No.3

바람직한 교정치료는 최적의 교정력을 치아에 가하여 정확하게 치아이동을 조절하고 예측함에 따라 가능해진다. 치관에 힘과 모멘트가 동시에 적용될 때 그 비율(M/F radio)에 따라 치주인대에 나타나는 응력 분포가 변화하게 되고 이에 따른 회전중심의 위치가 변하게 되는데 이런 양상을 파악함으로써 정확한 치아이동을 조절하고 예측할 수 있다. 본 연구에서는 교정력에 따른 치주인대 및 치조골 부위에서의 응력 분포를 알아보기 위하여 상악 중절치 치근8부위에 스트레인 게이지를 부착한 인공 치아를 광탄성 레진에 매식한4mm 정중이개 증례의 상악 전치부 실험모형을 제작하여 응력 분포를 조사하였다. 폐쇄 방법으로 다음과 같은3가지 방법을 적용하였다. 1. 금속 호선의 삽입 없이 100g의 힘을 발휘하는 elastomeric chain만 사용한 경우, 2. .016" 금속호선을 삽입하고 elastomeric chain을 사용한 경우, 3. .016" × .022" 금속호선을 삽입하고 elastomeric chain을 사용한 경우. 각각의 경우에서 치근의 근심면, 원심면 및 순면, 설면에 나타나는 응력을 계측하여 비교 분석한 결과 다음과 같은 결론을 얻었다. 1.치근 부착 스트레인 게이지를 이용한 응력 분포 조사 방법으로 치아이동시 치근의 근 ㆍ 원심면 및 순 ㆍ 설면에서의 응력 분포를 파악할 수 있었으며 이에 따른 모멘트 팔의 형성을 추정함으로써 치아의 회전양상을 알 수 있었다. 2.호선없이 교정력을 적용한 경우 정출 및 경사이동이 컸으며 호선 적용에 따라 입하 및 치체이동 양상을 보이는 것을 응력 분포 파악을 통해 확인할 수 있었다. (주요 단어 :스트레인 게이지, 응력, 회전중심) Optimal orthodontic treatment could be possible when a orthodontist can predict and control tooth movement by applying a planned force system to the dentition. The moment to force(M/F) ratio at the bracket, has been shown to be a primary determinate of the pattern of tooth movement. As various M/F ratios are applied to the bracket on the tooth crown, strain distribution in periodontium can be changed, and the center of rotation In tooth movement can be determined. It is, therefore, so important in clinicalorthodontics to know the strain distribution in a force system of a M/F ratio. The purpose of this study was to analyze the stain distribution in orthodontic force system by strain gauge attached to tooth root, and to evaluate the usage of the method. For this study, an experimental upper anterior arch model was constructed, where upper central incisors, on the root surface of which, 8 strain gauges were attached, were implanted in the photoelastic resin, as in the case of 4mm midline diastema. Three types of closing of upper midline diastema closure were compared : 1. with elastomenc chain(100g force) in no arch wore, 2. elastomeric chain in .016" round steel wire, 3. elastomeric chain in .016" × .022" rectangular steel wire. The results were as follows. 1.Strain distributions on labial, lingual, mesial and distal root surface of tooth were able to be evaluated with the strain gauge method, and the patterns of tooth rotation were understood by presuming the location of moment arm. 2.Extrusion and tipping movement of tooth was seen in closing in no arch wire, and intrusion and bodily movement was seen with steel arch wire inserted.