Time-Related Changes in Detrusor Overactivity in Awake Rats with Spinal Cord Injury Observed by Simultaneous Registrations of Intravesical and Intraabdominal Pressures

Jin, Long-Hu,Shin, Hwa-Yoan,Yoon, Seung-Hwan,Seong, Do-Hwan,Park, Chang-Shin,Lee, Tack,Yoon, Sang-Min Korean Continence Society 2011 International Neurourology Journal Vol.15 No.1

<P><B>Purpose</B></P><P>To compare the physical characteristics of detrusor overactivity (DO) induced by intravesical infusion of saline in awake, sham rats and rats with chronic spinal cord injury (SCI), by simultaneous registrations of intravesical and intraabdominal pressures.</P><P><B>Methods</B></P><P>Male Sprague-Dawley rats, normal or with a spinal vascular clip at the level of Th9, were investigated cystometrically 1 and 4 weeks after SCI. Intravesical pressure (IVP) and intraabdominal pressure (IAP) were recorded simultaneously to evaluate true DO. During the filling phase, the event of IVP rises, defined as increments that exceeded 2 cmH<SUB>2</SUB>O from baseline, were determined as DO according to the absence of simultaneous changes in IAP.</P><P><B>Results</B></P><P>All SCI rats exhibited DO during the filling phase, which was not shown in sham rats. The frequency and pressure of DO had a tendency to decrease with time. The DO frequency of SCI rats after 4 weeks (0.9±0.2 min<SUP>-1</SUP>) was decreased compared with that after 1 week (2.1±0.4 min<SUP>-1</SUP>; P<0.05). The DO pressure of SCI rats after 4 weeks (8.4±1.9 cmH<SUB>2</SUB>O) was decreased compared with that after 1 week (11.6±2.9 cmH<SUB>2</SUB>O; P>0.05).</P><P><B>Conclusions</B></P><P>Cystometric studies in awake male SCI rats showed some significant changes in bladder function after SCI. All SCI rats exhibited DO during the filling phase, and showed different physical characteristics of DO over the course of time. The neurological basis of these time-related changes remains poorly understood, but may provide important prognostic information about long-term urological management in SCI patients.</P>

DO와 ORP를 이용한 축산폐수처리 SBR운전 제어

전병희 ( Byong Hee Jun ),김도환 ( Do Hwan Kim ),최은희 ( Eun Hee Choi ),김성신 ( Sung Shin Kim ),김창원 ( Chang Won Kim ),배현 ( Hyeon Bae ) 한국물환경학회 2002 한국물환경학회지 Vol.18 No.5

A pilot scale SBR (working volume, 20㎥) treating piggery wastewater was operated with real wastewater. The operation mode of intermittent feeding of raw water and sub-cycle with repeating anoxic-aeration conditions were adapted to avoid the high-strength nitrogen inhibition. In sub-cycle, aeration time for nitrification was tried to be controled with ORP and/or DO meter. The characteristics of control was somewhat different between ORP and DO. DO showed potential ability to detect complete ammonia oxidation point by the first order differential values or absolute value. Especially, DO was proved to be useful for high loading rates. ORP indicated the ending point of nitrification by the plateau appearing after bending point. Because ORP can be utilized as a diagnosis tool by its good sensitivity for the microbial condition in reactor, the simultaneous application of DO and ORP was recommended for the stable control of SBR.

태양광 발전효율 향상을 위한 태양 추적 제어에 관한 연구

송도성,임종환 제주대학교 공과대학 첨단기술연구소 2006 尖端技術硏究所論文集 Vol.17 No.1

The photovoltaic(PV) power generation system transforms unlimited and pollution-free solar energy directly into electronic energy by using solar cells of semi-conductor devices. The PV power is globally attractive renewable energy in relation to problem of environmental pollution, and will be an important future energy sources. In this study the solar tracking system have been developed that can trace the direction of sun to keep the PV array perpendicular to the sun lay. The system is able to localize by itself using GPS, and it do not need a brake system. It uses very low power DC motors, so that it does not need external power. Furthermore, it has an ability to judge whether it is possible to generate or not depending on the light intensity. Also it can maintain the PV array horizontally to prevent from demage when the wind is strong.

Tris(tetraethylammonium) bistrimetaphosphate의 空間群 P1￣와 C2/c의 結晶學的 資料間의 相互變換

徐日煥,李珍昊,林星秀,朴晶蘭,秋錦洪,郭相姬,都暎圭,李海정 충남대학교 기초과학연구소 1994 忠南科學硏究誌 Vol.21 No.1

Tris(tetraethylammonium) bistrimetaphosphate, VP_6N_3O_18C_24H_60 의 結晶構造가 두가지 空間群 P1￣와 C2/c 로 밝혀졌다. 本 論文에서는 이 두가지 空間群의 結晶學的 資料間에 相互變換 關係가 成立함을 보였다. The structure of Tris(tetraethylammonium) bistrimetaphosphate, VP_6N_3O_18C_24H_60, has been elucidate with two space groups P1￣ and C2/c. In this paper, it has been shown that the crystallographic data of the two space groups are mutually transformed.

버들치(Rhynchocypris oxycephalus)의 vitellogenin 생성량 측정을 이용한 수중 estrogen휴 화합물의 정량분석법에 관한 연구

김을환,이도부,한상훈,윤병수 경기대학교 부설 기초과학연구소 2005 경기대학교 기초과학논문집 Vol.18 No.1

Vitellogenin(Vtg), a phospholipoglycoprotein precursor of egg yolk, is synthesized and secreted from the liver in response to estrogens in female fish. Vtg is normally undetectable in the blood of male fish, but can be induced by exposure to chemicals possessing estrogenic activity. Thus, the presence of Vtg in blood of male fish can serve as a useful biomarker for assessing previous exposure to estrogenic compounds. In the present study, Vtg was abnormally expressed in Rhynchocypris oxycephalus treatment of Estradiol Benzoate (E_(2)). As the result, it was found that the level of Vtg in blood from R. oxycephalus was increased by treated quantity of E_(2) with dose-effect manner.

최적유동을 위한 수조 내 팬의 위치에 관한 연구

박성수,도영민,유재환 한국산업안전학회 2002 한국안전학회지 Vol.17 No.3

In this numerical study, characteristics of swirl generation by the fan and selection of the location of the fan was studied theoretically by the modified TEACH code. The governing equation for the system are solved by means of the three dimensional version of the SIMPLE method and STAGGERED grid. From the present results, the optimal position of the fan is 0.625(h/H).

형질변형성장인자가 손상골 재생능에 미치는 영향에 관한 실험적 연구

황의환,이상래,홍정표,이병도 大韓口腔顎顔面 放射線學會 1995 Imaging Science in Dentistry Vol.25 No.2

The purpose of this study was to observe the effect of TGF-β1, which promotes differentiation and proliferation of osteoblasts, on bone regeneration. Experimental bone defects that measured 3 mm in diameter were created on the mandibles of guinea pig by removal of bone with the use of trephine burns. In one side of mandibular body the experimental groups, bone defects were grafted with Biogran(Orthovita Co., U.S.A.) and TGF-β1(R&D System Co., U.S.A.). IN the remaining side of the mandiblar body, the control groups, bone defects were grafted with only Biogran. Guinea pigs in the control and experimental groups were serially terminated by fours on the 3 days, the 1 week, the 2 weeks, the 3 weeks, and the 4 weeks after experiment, and both sides of the mandibular bodies were removed and fixed with 10% neutral formalin. They were decalcified and embedded in paraffin as using the usual method. The specimen sectioned and stained with hematoxylin and eosin. Also, they were radiographed with a soft X-ray apparatus The obtained results were as follows; 1. Hemorrhagic condition, observed in the granulation tissues, disappeared on the 1 week after experiment in both groups, and more prominent in the experimental group. The granulation tissues of the experimental group had larger number of cells than those of the control group. 2. Osteoblastic differentiation in the margin of grafted material and adjacent bone was observed on the 1 week after experimental in both groups. Also, bone formation was observed in immature form on the 1 week after experiment, and more prominent in the experimental group. 3. In the polarizing microscopic examination, bone matrix was very loose on the 1 week after experiment, but increase in density with time, and more prominent in the experimental group. 4. In the microradiographic examination, newly formed bone was observed in the experimental group on the 2 weeks after experiment, and this was observed earlier than in the control group. Newly formed bone was increased with time and defected area was markedly decreased on the 4 weeks after experiment.

이동 X-선 촬영시 산란 X-선의 공간분포 측정

김도성,박명환 대구대학교 기초과학연구소 1998 基礎科學硏究 Vol.14 No.2

The spatial distribution of the scattered X-ray exposure for mobile X-ray radiography is measured. The scattered X-ray exposures at the radius of 50 cm, 100 cm and 150 cm from the irradiation center are 880, 180 and 50 μ R, respectively. This scattered X-rays can be reduced to 60 % by inserting the portable shield made by 0.04 mm copper sheet sandwiched in two plywoods.

수영선수의 체격 및 체력이 경기력에 미치는 영향

손환수,전도선,오성기 釜山外國語大學校 比較文化硏究所 1999 比較文化硏究 Vol.10 No.-

Abstract This study was attempted to evaluate and quantify the differences of physical fitness among 4 swimming events(free style, back stroke, breast stroke, butterfly). To determine whether the differences among them existed or not the following question was addressed, were winning athletes among the 4 swimming events physically different? When significant differences were found, efforts focused on describing and quantifying the differences. On the basis of results, it is planned to select some physical fitness batteries which could best discriminate the successful swimmers. The 5 physique factors and 6physical fitness tests as discriminators, such as hight, weight, chest girth, upper limb length, lower jump, reaction time, one-legged standing time, vital capacity. The subjects included 60 elite swimmers sample from Pusan swimmers Team. The speed computer programs were used for data analysis. The results as follows: 1. physique In height, the average of male butterfly athletes was 170.0±3.0cm and 161.0±3.8cm for female butterfly athletes. The result of ANOVA test showed a significance difference for both man and woman(P<.05). In body weight, there was a significance difference both in male butterfly athletes(67.0±3.4kg) and back strokes(70.0±8.1kg). In case of woman, there also was a significance difference(P<.001) in case of woman, there also was a significance difference(P<.001) in butterfly athletes(54.7±5.5kg). In chest girth, it showed a 95.6±3.1cm for male back strokers and 83.0±3.3cm for female. Both showed a significance difference(P<.05) in 74.6±1.5cm for male butterfly athletes and 72.0±1.4cm for female back strokers. In lower limb length, the significance difference was found in male, female butterfly athletes and female breasts strokers, female free style. In standing broad jump, both male and female free style section shoed a significance difference(P<.001). In whole body reaction time, there was a significance difference for both female back strokers in light (0.33±0.1sec) and man free style sprinters (0.27±0.02sec) in sound. Here, there also was a significance difference in back strokers. In one-legged standing time, male free style section showed an annual significance difference(42.3±22.6sec. on average). In vital capacity, difference on the level of P<.06 (5,307±411ml on average). This study was attempted to evaluate and quantify the differences of physical fitness among 4 swimming events(free style, back stroke, breast stroke, butterfly). To determine whether the diffemces among them existed or not the following question was adressed, werw winning atheletes among the 4 swimming events physically different± When significant differences were found, efforts focused on describing and quantifying the differences. On the basis of results, it is planned to select some physical fitness batteries wrich could best discriminate the successful swimmers. The 5 physique factors and Gphysical fitness tests as discrimnators, such as height, weight, chest girth, upper limb length, lower jump, reaction time, one-legged standing time, vital capacity. The subjects included 60 elite swimmers sample from Pusan swimmers Team. The speed computer programs were used for data analysis. The results as follows: 1. physique In height, the average of male butterfly athletes was 170.0±3.0㎝ and 161.0±3.8㎝ for female butterfly atheletes. The result of ANOVA test showed a significance difference for both man and woman(P<.05). In body weight, there was a significance difference both in male butterfly atheletes(67.0±3.4kg) and back strokes(70.0±8.1kg). In case of woman, there also was a significance difference(P<.001) in case of woman, there also was also was also was a significance difference(P<.001) in butterfly atheletes(54.7±5.5kg). In chest girth, it showed a 95.6±3.1㎝ for male back strokers and 83.0±3.3㎝ for female. Both showed a signficance difference(P<.05) in 74.6±1.5㎝ for male butterfly athelets and 72.0±1.4㎝ for female back strokers. In lower limb length, the significance difference was found in male, female butterfly athelets and female breasts strokers, female free style. 2. physical fitness In back strengh, there was a annual significance difference (P<.05) for both male butterfly athelets and breasts strokers. In case of woman, there also was a significance difference for both breasts strokers and free style sprinters. In standing broad jump, both male and female free style section shoed a significance difference(P<.001). In whole body reaction time, there was a significance difference for both female back strokers in light (0.33±0.1 sec) and man free style sprinters (0.27±0.02sec) in sound. Here, there also was a significance difference in back strokers. In one-legged standing time, male free style section showed an annual significance difference(42.3±22.6sec. on average). In vital capacity, difference on the level of P<.05 (5,307±411 ml on average).

광범위하게 진행된 다발성 섬유성이형성증

이병도,황의환,이상래 대한구강악안면방사선학회 2000 Imaging Science in Dentistry Vol.30 No.2

Fibrous dysplasia is a benign disorder of bone consisting of intramedullary proliferation of fibrous tissue and irregularly distributed, poorly developed bone. The disease manifests itself in the monostotic form in which only one bone is involved and the polyostotic form in which multiple bones at different sites are affected. We reported a extensive case of polyostotic fibrous dysplasia with involvement of craniofacial bones, mandible, ribs and extremities. A 18-year-old man showed remarkable right facial swelling who had been treated on right femur 3 years ago with a bone graft for pathologic fracture and he recognized facial swelling 5 years ago. Extraoral radiograms and computed tomogram showed diffuse sclerosis with a ground glass appearance of the most cranial bones, facial bones, The right mandibular lesion showed very expansive lesion with mottled appearance. Bone scans showed mutifocal increased uptakes in craniofacial bones, right mandible, bilaterally in ribs, humerus, femur, tibia and characteristic varus deformity of right femur (shepherd's crook defomity). This case showed exceptionally bilateral, extensive nature of bone lesion and didn't show any features of skin pigmentation and endocrine disturbances.(Korean J Oral maxillofac Radiol 2000 ; 30 : 117-122)