2經間 Cover 連續보의 最適設計에 관한 硏究

孫鎔雨,최규도,鄭哲源 圓光大學校大學院 1991 論文集 Vol.8 No.-

A nonlinear programming model is developed for the optimal design of a two-span continuous steel beam, having cover plates at the interior support. All dimensions of the web and flange of the beam, as well as those of the cover plates, are automatically selected by the program to produce the minimum weight structure. The nonlinear expressions involved are linearized by a substitution of the linear terms of the Taylor series expansion representing the nonlinear expression an iterative process is constructed, and the solution to one design cycle is used as the expansion point for the Yaylor series used to generate the necessary matrices for the linear programming problem on the successive cycle. In this version of the technique, the analysis portion of the problem is not involved in the set of constraints. Convergence does not appear to be sensitive to the initial design used for the cycle of the iteration, and an acceptable solution is usually obtained in fewer than ten cycles.

가열처리에 의한 단감의 이화학적 특성

손규목,김광호,성태수,김종현,신동주,정지영,배영일 한국식품영양학회 2002 韓國食品營養學會誌 Vol.15 No.2

단감의 기능성 소재 및 기호성이 우수한 부원료로서의 이용 가능성을 확인하기 위하여 단감새옥를 전처리별 즉, 열처리 온도 (25℃, 75℃ 및 95℃) 에서 NaCl (0, 1, 3%) 농도별로 침적 (1, 5분) 하여 동결건조한 시료구를 대상으로 탄닌, 비타민 C, 색도 및 조직감 등을 분석한 결과는 다음과 같다. 탄닌 성분은 열처리 온도, NaCl 농도 및 침적시간이 증가할수록 탄닌함량이 감소하는 경향을 나타내었으며, 특히, 대조구 (420 mg%) 에 비해 95℃에서 1% 및 3% NaCl 농도에 5분간 침적시 각각 228 및 198 mg%로 감소하였다. 비타민 C 함량은 대조구 (122.4 mg%)에 비해 95℃에서 3% NaCl 농도에 5분간 침적시 75.8 mg% 로 감소하였고, 색도는 열처리 온도, NaCl 농도 및 침적시간이 증가할수록 L(명도) 및 b(황색)값이 뚜렷하게 증가한 반면, a(적색도) 값은 감소하였고, ??E 값은 증가하여 처리조건이 가중될수록 색의 변화가 진행됨을 알 수 있었다. 단감껍질과 전처리한 시료 (95℃, 1% NaCl, 5 분)의 flavonol 함량은 껍질에 myricetin(2.0 ㎍/g), quercetin (34. 5 ㎍/g) 및 kaemferol (1.1 ㎍/g) 성분이 검출되었고, 전처리한 시료는 myricetin (9.5 ㎍/g), quercetin (5.5 ㎍/g)이 검출되었다. 조직감은 대조구에 비해 전처리 (95℃, 1% NaCl, 5분) 한 시료에서 부서짐성, 응집성, 점성 및 씹힘성이 우수하였다. 관능검사는 95℃에서 1% NaCl에 5분 및 3% NaCl 농도에 1부간 침지한 시료가 좋은 평가를 받았다. Sweet persimmon were tested in order to identify their use as secondary material which is excellent in function and taste as food. Samples were soaked for 1 and 5 min with NaCl concentration (0, 1 and 3%) at a certain heating temperature (25, 75 and 9r℃), and then tannin, vitamin C, flavonol, color intensity, sensory test and textural properties were analyzed. The results of the analyses were as follows. Tannins were decreased as heating temperature, NaCl concentration and soaking time were increased, especially, that the control was 420 mg% but decreased 228 and 198 mg% at 95℃ (1 and 3% NaCl concentration) for 5 min, soaked in each. Vitamin C content also decreased more in higher temperature and NaCl concentration than control (122.4 mg%). Color intensity showed higher value in L and b than in heating temperature, NaCl concentration and soaked time longer remarkably, but a value decreased. The peel of sweet persimmons was analyzed myricetin (2.0 ㎍/g), quercetin (34.5 ㎍/g) and kaemperaol (1.1 ㎍/g), but in pre-treatment sample ( 95℃, 1% NaCl concentration and 5 min, soaked ) was showed higher myricetin (9.5 ㎍/g) and quercetin (5.5 ㎍/g). Textural properties were good in pre-treatment sample ( 95℃, 1% NaCl concentration and 5 min, soaked) such as brittleness, cohesiveness, gumminess and chewiness. In sensory analysis, the pre-treatment samples (95℃, 1% NaCl concentration and 5 min, soaked and 95℃, 3% NaCl concentration and 1 min, soaked) were showed higher point than others.

요로조영상에서 요관폐색 및 음영결손을 보인 환자에서의 요관경검사

염규영,하용원,노안식,손성용,김진겸,설종구 충남대학교 의과대학 지역사회의학연구소 2000 충남의대잡지 Vol.27 No.2

Purpose: To evaluate the clinical value of ureteroscopy for the ureteral filling defect or obstruction on the excretory or retrograde pyelogram(RGP). Materials and Methods: The 72 patients with filling defect or intrinsic obstruction ureteral lesion on the excretory urogram or RGP underwent ureteroscopy to examine and treat the lesions. We used the 9.5Fr. or 11.5Fr. rigid ureteroscope with 5Fr. working channel. Results: The results were as follows; I. Among the 72 patients, 39 were male and 33were female. The mean age of patient was 45.7 years. 2. Ureteroscopy was successfully performed in 70 cases(97%) out of 72. In 2 cases, the advance of ureteroscope was failed. 3. Among 70 successful cases, ureteroscopy revealed 45 radiolucent stones, 9 ureteral stricture, 2 ureteral TCC. I metastatic tumor, 3 blood clot, each case of ureteral polyp, epithelial hyperplasia and Von-Brunn's nest. In 7 cases, no causative lesions were identified. 4. 41 out of 45 radiolucent stones were successfully removed by ureteroscopic procedure and 9 ureteral strictures were dilated. 6 cases of ureteral mass were successfully biopsied for pathological diagnosis. 5. 23 cases of post-operative or fever were treated conservatively and 10 cases of mucosal tearing and 1 case of ureteral perforation were treated with double-J stent indwelling. Conclusions: The ureteroscopy is effective modality to evaluate and treat in the ureteral filling defect or obstruction on the excretory urogram.

향나무와 그 變種들의 類綠關係에 關한 核學的 硏究

鄭宇珪,孫玲杰,成敏雄,金鼎錫 慶尙大學校 기초과학연구소 1992 基礎科學硏究所報 Vol.8 No.-

In this study the relationship among Juniperus chinensis and its seven varieties-J. chinensis var. procumbens, J. chinensis var. horizontalis, J. chinensis var sargentii, J. chinensis var, kaizuka, J. chinensis var. aureo-variegata, J. chinensis var. globosa, J. chinensis var. aureo-globosa-and J. rigida was studied by using the karyological methods. The results obtained from this study were as follows : In the karyotype analysis, J. chinensis, J. chinensis var. horizontalis, J. chinensis var. sargentii, J. chinensis var. globosa, J. chinensis var. aureo-globosa, and J. rigida were diploid with 2n=22, although J. chinensis var. procumbens, J. chinensis var. kaizuka and J. chinensis var. aureo-variegata were tetraploid with 2n=44. According to descending order of the total length of the chromosomes and the length of short and long arms, from the arrangement order of chromosomes and the position of centromeres, J. chinensis var. procumbens and J. chinensis var. horizontalis were categorized into the first group J. chinensis var. kaizuka and J. chinensis var. aureo-variegata were into the second group, and J. chinensis var, globosa and J. chinensis var. aureo-globosa were into the third group, respectively. Aneuploid(2n=26) in the C-band staining of J. chinensis var. aureo-variegata was identified, although it normally showed 2n=44 as karyotype. Because light was emitted from all chromatids of the samples by fluorescent light staining with DAPI, A-T rich regions would be located all over the chromatids.

스넥코너에서 채취한 튀김기름의 신선도에 관하여

박규영,박모라,서수경,손순희,정경희,정유선 효성여자대학교 가정대학 학도호국단 1985 家政大論集 Vol.4 No.-

대구 시내 전역에 산재해 있는 튀김 음식점과 스넥코너등에서 튀김중인 기름에 대한 변패도를 알아 보기 위해 여름철과 겨울철 두 계절에 또 튀김물의 종류별로 시료 186개를 채취하여 산가, 과산화물가, carbonyl가 및 TBA가를 측정한 결과는 아래와 같다. 1. 산가, 과산화물가, carbonyl가 및 TBA가는 각각 2.2, 47, 19, 0.7로 나타났다. 2. 여름철로가 겨울철을 비교해 본 결과는 산가, 과산화물가, carbonyl가는 여름철이 높았으나 TBA가는 두 계절이 비슷하였다. 3. 튀김물의 종류에 따른 기름의 변패도는 오뎅, 핫도그, 닭, 야채, 도나스 순으로 나타났다. In order to investigate the degree of changes in quality of frying oils to be used atsnack corners and street stalls in Taegu area. acid value (AV), peroxide value(POV), carbonyl value (COV), and TBA value were measured. 95 samples insummer and 91 samples in winter were collected from oils fried for fish cake, hotdogs,chicken, vegetable and doughnuts. The mean value of AV, POV and COV on the fryingoils collected in summer were higher than those in winter, while TBA value of oilsin summer ·was similar to that in winter. According to the kinds of fried food, thedegree of the change in quality of frying oil was high in order of fish cake, hotdog,chicken, vegetable ana doughnut.

레이저 인터페로메타를 이용한 드릴링 머신의 틸팅에 관한 연구

이승수,손영지,장성규,전언찬 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.2

This paper describes tilt angle measurement method. This method measures tilt angle of drilling machine using laser interferometer with simple sliding linear bearing. Measurement method is next orders. First, measurement position is considered pointed contact of two probes. And revolution of drill axis deliver pointed contact of probe. Second, so laser interferometer attach on sliding linear bearing, moving of probe influence laser reflector. And laser program displays this vibration of laser reflector. Namely, this vibration is tilt factor. A lot of error factor have an effect on accuracy to measurement of linear, angular, and so on. But this paper ignores some error factor, because these error festor is very smaller than tilt angle factor which we had been measuring values.

FEA와 다이나모메터를 이용한 자동차 디스크 브레이크의 열적 거동에 관한 연구

박범식,손영지,장성규,전언찬 한국공작기계학회 2000 한국공작기계학회 추계학술대회논문집 Vol.2000 No.-

While braking cars, a large amount of energy is taken into the brake system in a short period of time. This leads to some problems ; cracking of the disc, non-uniform wear of pad and disc, fade. Thus it is important to measure the contact thermal behaviour precisely between disc and pad. The measurements must be considered to design the brake system. The paper describes methods to analysis the problem of the thermal behavior on the ventilated disc with ANSYS-a program of FEA and a brake dynamometer. According to this way, the paper can present the error between the data by the dynamometer and the results of analysis by ANSYS.

Utilization of End-of-Life Care Rooms by Patients Who Died in a Single Hospice Unit at a National University Hospital in South Korea

Gyu Lee Kim,Seung Hun Lee,Yun Jin Kim,Jeong Gyu Lee,Yu Hyeon Yi,Young Jin Tak,Young Jin Ra,Sang Yeoup Lee,Young Hye Cho,Eun Ju Park,Young In Lee,Jung In Choi,Sae Rom Lee,Ryuk Jun Kwon,Soo Min Son Korean Society for Hospice and Palliative Care 2023 한국호스피스.완화의료학회지 Vol.26 No.2

Purpose: For the dignity of patients nearing the end of their lives, it is essential to provide end-of-life (EoL) care in a separate, dedicated space. This study investigated the utilization of specialized rooms for dying patients within a hospice unit. Methods: This retrospective study examined patients who died in a single hospice unit between January 1, 2017, and December 31, 2021. Utilizing medical records, we analyzed the circumstances surrounding death, the employment of specialized rooms for terminally ill patients, and the characteristics of those who received EoL care in a shared room. Results: During the 1,825-day survey period, deaths occurred on 632 days, and 799 patients died. Of these patients, 496 (62.1%) received EoL care in a dedicated room. The average duration of using this dedicated space was 1.08 days. Meanwhile, 188 patients (23.5%) died in a shared room. Logistic regression analysis revealed that a longer stay in the hospice unit was associated with a lower risk of receiving EoL care in a shared room (odds ratio [OR]=0.98, 95% confidence interval [CI] 0.97~0.99; P=0.002). Furthermore, a higher number of deaths on the day a patient died was associated with a greater risk of receiving EoL care in a shared room (OR=1.66, 95% CI 1.33~2.08; P<0.001). Conclusion: To ensure that more patients receive EoL care for an adequate duration in a private setting, additional research is necessary to increase the number of dedicated rooms and incorporate them into the hospice unit at an early stage.

A Gray-Level Dependent Pre-Emphasis Column Driver With Fast Settling for Active-Matrix LCD Applications

Young-Suk Son,Hong-Hee Son,Yong-Suk Kim,Hyeong-Seog Oh,Gyu-Hyeong Cho IEEE 2007 IEEE transactions on circuits and systems. a publi Vol.54 No.12

<P>In this brief, simple analytical solutions for pre-emphasis driving conditions in active-matrix liquid crystal display (AMLCD) applications are presented. According to the solutions presented, the column driver with a gray-level dependent pre-emphasis (GLDP) function is designed for fast settling. The GLDP column driver is implemented without using additional frame memory. Also, modifications to the display system and integrated circuit fabrication process changes are not required. The GLDP column driver provides output voltage signals with variable pre-emphasis durations according to the magnitude of the gray-level shift to be driven. By applying the GLDP column driver, 8-mus reduction of the required one row line time was achieved on average. This one row line time reduction makes it possible to realize high performance and low cost AMLCDs. The 640 channel, full function GLDP column driver is fabricated by a 13.5-V 0.35-mum CMOS process.</P>

이중 초음파 반응기에서의 초음파화학 반응의 최적화

손영규 ( Young Gyu Son ) 한국물환경학회(구 한국수질보전학회) 2014 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2014 No.-