• Journal of the Korean Wood Science and Technology
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• 제46권4호
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• pp.368-379
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• 2018

Objective of this work is to study the effects of a saline solution used to pretreat lignocellulosic material derived from champak timber. The native lignocellulosic solids, in powder form, were mixed with saline water solutions of three different concentrations and maintained for 2 weeks without stirring. The treated solids were washed, recovered, and then dried under sunlight. The substrates were characterized using X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, and scanning electron microscopy (SEM). The crystallinity (CrI), lateral order index (LOI), total crystallinity index (TCI), and surface morphologies of all the samples were determined. The treated biomass structures were compared with controls. The data show that the structures of all the treated substrates changed, as indicated by CrI. CrI of the treated substrates decreased significantly compared with that of the original wood, as did LOI and TCI quantities, whereas the HBI parameter increased. The results indicate that the saline water pretreatment modified the wood samples.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2005년도 춘계 학술발표회 논문집
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• pp.529-536
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• 2005

Based on an estimating method for post-cyclic strength and stiffness with cyclic triaxial tests, Direct Simple Shear (DSS) tests were carried out to confirm whether the method can be adapted to DSS test on fine-grained soils: silty clay, plastic silt, and non-plastic silt. Results from post-cyclic DSS tests were interpreted by a modified method as adopted for post-cyclic triaxial tests. In particular, influence of plasticity index for fine-grained soils was emphasised. Findings obtained from the present study are: (i) the higher the plasticity index of fine-grained soils is, the less not stiffness ratio but strength ratio decreases with increment of a normalised excess pore water pressure; and (ii) post-cyclic strength and stiffness results from DSS tests agree well with those predicted by the method modified from a procedure used for triaxial test results.

• Journal of Acupuncture Research
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• 제19권5호
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• pp.35-45
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• 2002

Objective : The aim of this study was to investigate the effect of tong's acupuncture on recovery of motor disorders in stroke patients. Methods : Twenty two patients with poststroke-hemiplegia were randomized into two groups. Ten patients(test group) treated by 2 methods-tong's acupuncture and body acupuncture. The other twelve patients(control group) treated only by body acupuncture. The activity of daily living was measured with a National Institutes of Health stroke scale(NlHSS) and Modified Barthel Index(MBI). The therapy was performed one a day for 2 weeks. Results: In terms of score of NIHSS. the test group showed statistically meaningful decrease after 2 week treatment. but the control group showed statistically meaningful decrease after I week(p<0.05). And in terms of score of MBI. the test group showed statistically meaningful increase after 2 week treatment. but the control group showed statistically meaningful increase after I week(p<0.05). There was no statistically meaningful difference after 1 and 2 week treatment between the groups. Conclusions: These results support that test group has almost same effectness compared with control group in improvement of the activity of daily living of poststroke-hemiplegic patients.

• 한국콘텐츠학회논문지
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• 제19권8호
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• pp.293-302
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• 2019

이 연구의 목적은 Stroke Impact Scale 3.0(SIS 3.0)의 신뢰도와 타당도를 조사하는 것이었다. 연구에서 SIS 3.0은 125명의 뇌졸중 환자를 대상으로 측정하였다(평균 = 62.7, 표준 편차 = 9.43). SIS 3.0 하위 영역들 간에 상관 분석을 통해 구성타당도를 확인하였고, MBI(Modified Barthel Index)와 K-MMSE(Mini-Mental State Examination-Korean)간의 상관을 분석하여 수렴타당도를 조사하였다. 각 항목의 특성은 고전적 문항 이론을 바탕으로 내적 합치도와 문항 변별도를 분석하였다. 이 연구를 통해 SIS 3.0의 구성타당도와 수렴타당도가 확인되었다. 감정 영역에 포함된 i 항목은 문항 변별도가 낮았지만 이 항목을 제외하고는 모두 변별도가 높았다. 하위 영역의 문항내적합치도는 0.858~0.941로 나타났다. 이 연구는 지역사회에 거주하는 뇌졸중 환자를 대상으로 임상 현장에서 SIS 3.0 사용을 위한 신뢰도와 타당도를 확인하였다는데 그 의의가 있다.

• 한국수자원학회논문집
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• 제55권10호
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• pp.843-854
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• 2022

이안류 안전사고 저감을 목적으로 운영되는 실시간 이안류 경보체계에서 위험지수를 생산하는 방법을 개선하는 연구를 수행하였다. 상기 체계는 실시간 관측정보를 기반으로 신속한 이안류 위험지수를 생산할 필요가 있기 때문에 사전 수치모의 결과(즉, 발생가능 시나리오에 따른 이안류 발생정도)를 이용한다. 본 연구에서는 기존 기법의 곡선적합 경험식을 사용하는 대신에, 다변수 함수인 이안류 발생정도를 2차원 분포(예, 파고-주기, 파고-조위, 파고-파향, 파고-주파수 스펙트럼 광협도, 파고-파향 스펙트럼 광협도)로 저장하여 사용하므로 이안류 위험지수 생산 기법을 개선하였다. 2021년에 운영된 해운대 파랑 관측자료와 부산조위소의 조위정보를 개선된 방법에 적용하였고, CCTV를 통해 확인된 몇 차례의 이안류 발생사건에 대하여 관측정보와 적용한 결과를 비교하여 제시하였다.

• 한국지반공학회논문집
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• 제20권2호
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• pp.15-26
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• 2004

반복삼축시험에 의한 반복하중 후 강도 및 강성의 예측법을 이용하여, 세립토에 대해서 직접단순 전단시험에서도 그 방법의 사용 가능성을 확인하여 보았다. 사용한 흙은 실트질 점토, 소성 실트와 비소성 실트이다. 반복삼축시험을 통해서 얻은 강도 및 강성 예측법을 직접단순 전단시험에 맞게 수정하여 시험 결과와 비교하였다. 특히, 세립토의 소성지수와 초기전단응력(ISSS)의 영향이 강조되었다. 연구결과는 (i) 세립토의 액상화강도비는 소성지수의 감소와 초기전단응력의 증가에 따라 감소한다. (ii)등가강성과 전단변형률의 관계에 미치는 소성지수와 초기전단응력의 영향은 그리 크지 않다. (iii) 정규화한 과잉간극수압의 증가에 따른 강도비의 저하는 세립토의 소성지수가 증가할수록 느리다. (iv) 활성도가 큰 소성실트의 강성은 과잉간극 수압의 증가에 따라 급속히 감소한다. (v) 반복삼축시험 결과를 이용한 반복하중후 강도 및 강성의 예측법을 이용하여 직접단순 전단시험 결과에 수정한 방법은 시험결과와 잘 어울리는 것으로 나타났다.

• Asian-Australasian Journal of Animal Sciences
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• 제15권3호
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• pp.321-325
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• 2002

Karyotype analysis was carried out on blood samples of 30 water buffaloes belonging to different breed groups (i.e. Philippine Carabao (PC), Indian Murrah (IM), Bulgarian Murrah (BM), "$F_1$ 50% IM-50% PC", "$F_1$ 50% BM-50% PC" and "75% IM-25% PC"), using the modified Leucocyte Culture Technique. The modal chromosome numbers of the PC, "$F_1$ 50% IM-50% PC", "$F_1$ 50% BM-50% PC", IM, BM and "75% IM-25% PC" were 2n=48, 49, 49, 50, 50 and 50, respectively. The water buffalo chromosomes are mostly acrocentric (79.67%) and the remainder submetacentric (20.33%). Results of the ordinary least square analysis showed significant breed effects (p<0.01) on other karyotypic characteristics (i.e. relative length, arm ratio and centromeric index). Significant correlation between karyotypic characteristics and some animal performance traits were also found. The significant correlation values imply that karyotypic characteristics can be used as important criteria to select potentially productive young water buffaloes. In the future, more production and reproduction traits from non-institutional herds should be included in the analysis to reveal meaningful correlations with various karyotypic characteristics.

• Journal of Periodontal and Implant Science
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• 제38권3호
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• pp.483-492
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• 2008

Purpose: The purpose of this study was to compare clinical effect of the Langer & Langer technique, the modified Langer & Langer technique and Bruno technique. Material and Methods: 30 patients who have gingiva recession(Miller class I or class II) were carried root coverage. Langer & Langer technique(14 patients/32 tooth), modified Langer & Langer technique(5 patients/10 tooth) and Bruno technique(11 patients/18 tooth) was carried. At baseline and average 3 months after operation, it was estimated clinical index(Pocket depth, gingiva recession, clinical attachment level, keratinized gingiva, scar tissue, root coverage rate) by Williams style probe. Result: Root coverage rate is indicated Langer & Langer technique(8S%), Modified Langer & Langer technique(86%) and Bruno technique(90%). Conclusion: All three of the procedures were effective in gingival recession and improved clinical parameters.

• 한국의류산업학회지
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• 제16권6호
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• pp.921-926
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• 2014

The aim of this study is to develop upper bodice pattern for obese girls aged 10~12 by using 3D virtual garment simulation system. The criteria for subjects in this study were girls who had over 1.46 of the R$\ddot{o}$hrer Index. A total of 229 schoolgirls who met these criteria were enrolled. The results of this study are as follows: First, by using 3D virtual garment simulation, new upper bodice pattern considered obese-schoolgirls was development. The basic numerical formula were as follows ; bust girth B/2+4.5, armhole depth B/4-1, waist girth W/4+0.5+dart amount, front chest width B/6+2, back width B/6+2, neck width B/12-0.5 and neck depth B/12+0.5. Second, armhole darts were added to compensate the loose amount of front armhole and dart manipulation was used to ensure a better appearance on armhole in the design. The dart side line was modified concavely to help cover the protruding stomach. Curved lines on the armhole were significantly relieved using dart manipulation and the darts side line was modified concavely to reduce the tightness around the front waist darts. Third, according to the results of the new upper bodice pattern's appearance evaluation, it estimated more highly than existing pattern in silhouette and ease amount, confirming that new upper bodice pattern was appropriate for the obese-schoolgirls. This study is expected to serve as one of important basic data for ensuing studies that may utilize 3D virtual garment simulation system with 2D patterns.

• 한국토양환경학회지
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• 제2권3호
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• pp.31-38
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• 1997

산성폐수에 함유된 오염물질의 물리적 화학적 특성이 배우 복잡하기 때문에 산성폐수에 의해 오염된 지표수나 지하수등의 오염정도를 지역적, 시간적 변화에 따라 비교하는 일은 쉽지가 않다. 본 논문에서는 산성폐수에 의해 오염된 지표수나 지하수의 오염도를 정량적으로 평가할 수 있는 수학적 지표를 제시하였으며, 오염지표를 이용하여 국내 폐탄광의 갱내 유출수에 대한 오염도를 검토하였다. 사용된 오염지표(Acid Mine Drainage Index)는 수질의 오염정도를 가장 잘 나타낼수 있는 7개의 변수 즉, pH값, 황산염(Sulfate), 철, 망간, 알루미늄, 구리 및 아연 함량을 이용하여 계산하였다. 사용된 변수는 오염도에 미치는 상대적인 중요도를 감안하여 가중치를 사용하였으며 , pH값 및 황산염함량에 가장 높은 가중치를 부여하였다. 국내 폐광산에서 유출되는 산성폐수의 오염도 평가결과 경북 문경에 소재한 석봉탄광이 조사탄광중 상대적으로 오염도가 높았으며, 지역적으로 영동지역에 위치한 폐탄광의 갱내 유출수가 영서, 중부, 서부 및 남부에 위치한 폐탄광에 비해 오염도가 높게 나타났다.