요추부 척추협착증 수술환자에서 극돌기간 연성고정물 사용군과 비사용군의 치료결과 비교

김재도,장재호 고신대학교 의과대학 2009 고신대학교 의과대학 학술지 Vol.24 No.1

Background : To compare of the clinical and radiologic results between microscopic decompression(MD) and MD with Device for Intervertebral Assisted Motion(DIAM) in lumbar canal stenosis. Materials and Methods : The retrospective evaluation was performed after surgery of stenosis. MD with DIAM was performed in 17 cases(Group A) and MD in 20 cases(Group B). In radiologic evaluation, checked the preoperative and postoperative disc height, intervertebral foraminal dimension, lumbar lordotic angle and instability by Panjabi. In clinical evaluation, preoperative and postoperative pain was checked by VAS. Disability was checked by RMQ(Roland Morris Questionnaire) and sf-36(PF). Results : In radiologic results, disc height changed from 11mm to 13mm in Group A(11mm to 11.8mm in Group B)(p=0.669). Intervertebral foraminal dimension was changed from 20.6mm to 22.3mm in Group A(19.5mm to 20.5mm in Group B)(p=0.536). Lumbar lordotic angle was changed from 15.40 to 14.20 in Group A(14.80 to 19.50 in Group B)(p=0.033). Instability score was improved from 0.9 to 0.2 in Group A(1 to 0.2 in Group B)(p=0.642). VAS score improved in group A from 10 to 2(9 to 2 in Group B)(p=0.612). On sf-36(PF), the values changed from 34/100 to 58/100 in Group A(30/100 to 58/100 in Group B)(p=0.535). Conclusion : Using dynamic interspinous stabilizer(DIAM) appears to be a useful and effective methods in surgery of lumbar canal stenosis with better radiologic results than MD only, but lumbar lordotic angle was decreased, slightly

IMT-2000 기지국용 이중 편파를 위한 광대역 단일 소자 안테나 설계 및 특성 개선

장원호,박주성,태재훈,이윤현 한국항행학회 2002 韓國航行學會論文誌 Vol.6 No.3

본 논문에서는 편파 다이버시티 특성을 갖는 이중 편파(Dual-Polarization)방식의 INT-2000(1.885㎓-2.17㎓)기기국용 안테나에 사용할 수 있도록 기존 Folded Dipole안테나의 특성을 개선하였다. 제작된 안테나는 PCB기판에 몰디드 다이폴 안테나 구조에 적층 형태를 갖는 마이크로 스트립 안테나로서 각 단자별 반사게수가 -20㏈ 이하, 이중 편파 구조에서 중요한 규격인 단자간 분리도는 -20㏈ 를 가지며, 이들은 전 대역에서 약 7 dBi 이상의 특성을 보였다. Design and characteristic improvement of existing folded dipole antenna is presented to adopt W-CDMA(1.885~2.170 ㎓) wideband antenna radiators. The antenna structure has +/- 45 degrees dual polarization. In order to overcome the narrow bandwidth and low gain characteristic typical of the microstrip antenna, double layered structure was employed. The antenna achieved below -20 ㏈ reflection coefficients each ports. -20 ㏈ of port isolation, above 7 dBi of gain, providing evidence that the proposed design can be used in the W-CDMA service frequency band antenna.

麻黃附子細辛湯이 實驗運動의 心血管系에 미치는 影響

張宰豪,金世吉 圓光大學校 韓醫學硏究所 1995 원광한의학 Vol.5 No.1

The present experiments were designed to investigate the effects of Mahwangbuja-seshintang on the cardiovascular system by using the methods of measurement of blood pressure, Mg^2+ -Ca^2+ -ATPase activity of cardiac endoplasmic reticulum and digital inflared thermograph imaging analizer. In order to control the precise chemical and physical animal conditions, the experimental animals were supplied with calorie limited food. The results obtained were summarized as follows: 1. Mahwangbujaseshintang water extract increased the blood pressure and heart beat rate in the anesthetic rabbits. 2. Mahwangbujaseshintang seemed like to stimulate autonomous sympathetic nerve α and β receptors. 3. Mahwangbujaseshintang demonstrated the antihistamine effect by contracting the capillary, and thus it decreased the body surface temperature. 4. Mahwangbujaseshintang increased the blood pressure and heartrate by contracting the body surface capillaries. According to the above result's Mahwangbujaseshintang water extract has the curative effect on the heart disease and blood flow.

알코올 발효성 야생 효모의 선발 및 발효특성

장재호*, 한상민*, 이종수 배재대학교 자연과학연구소 2017 自然科學論文集 Vol.28 No.1

충남 예당 저수지부근 토양에서 분리한 야생효모 중 Aureobasidium pullulans 효모가 가장 발효능이 우수하여 최종 선발하였다. 20% 포도당을 함유한 YPD 배지에서 Aureobasidium pullulans의 발효 최적 조건을 조사한 결과 에탄올 함량은 25℃에서 7일 발효시켰을 때 가장 많은 12.6 v/v%의 에탄올을 생성하였다. In order to select alcohol-fermenting wild yeast, among thirteen strains of non-pathogenic wild yeasts from Yedang Reservior, Chungnam province, Korea, Aureobasidium pullulans P-1 was screened as a potent alcohol-fermenting yeast. Optimal ethanol fermentation condition was investigated using 20% glucose- 1% yeast extract-2% peptone(20 DYP) broth. Maximal 12.6 v/v% ethanol was produced when 20% DYP broth was fermented by 5% Aureobasidium pullulans P-1 culture broth at 25℃ for 7 days.

화상 대화 시스템의 객체지향 설계

장재명,김윤호,이정환 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-

This paper presents an object-oriented design for a video conversation system. This paper adapts the traditional client/server architecture and uses JMF for process media transmission. It starts from the analysis of functional/non-functional requirements and it documents the model of the system based on'4+1 View Model.' The manifest in this paper will be used usefully to design a system for cyber university or visual conference based audio/video media transmission.

천연염료를 이용한 무늬염법

장영호,이재범 한국공예학회 1999 조형디자인연구 Vol.2 No.2

The natural dye substance largely consists of plant, animal and minerals materials, which we can easily and naturally be obtained all around us. It has been widely used all around the world for numerous years. The natural dye substance appears to have a lot of benefits that enable the dyed material to show natural merits which in turn enables the dyed materials to exhibit their natural colors. It may have a little bit of a damaging effect on the human body itself. , in comparison to the synthetic substances. It also causes hardly any environmental pollution because of the natural chemicals and costs much less to dispose of. on the other hand it also has disadvantages, that is it's difficult to get various kinds of patterns on the cloth. The dyeing process is done by full saturation, which is only available for commercial use because of the low ratio of dyeing success. The product of the dye substance is limited, the reliability of the dyed material is low, and it is easy to make dark and light colors. For the reasons mentioned above, the use of the natural dye is decreasing except for special uses. Nowadays it is very difficult to come across this method because of he appearance of synthetic dye substances. The dyeing process by saturation into the natural dye substance is done by putting the material, ready for dyeing, into the dye-water once or several times repeatedly. It also has several problems, which include, the complexity of the dyeing process, the low reliability of the dyeing substance and the dependence on manual work done by observing with the naked eye. Eventually, these problems caused the slow down of industrialization. Furthermore, the mixed use of dye substances and it's catalyst caused to develop the natural dye substance and to increase the dye's adhesiveness to the material. Those are the disadvantages of it's use. This is the method to study silk screen printing by using natural dye substance to make a specific patterns on the clothing using various methods. The silk screen printing needs to have the material dyed by the saturation method. Then the silk screen is printed by subtracting the colors to make another shade of color without using any additional dye substance. It only uses the natural dye substance mixture and it's catalyst. It will help to print specific patterns on the material. Therefore it's effects are available for using in various kinds of silk screen printing and to make different kinds of patterns equal to the natural dye substance method, which is both saturating and then printing.

R.F. magnetron sputtering법으로 제조한 LaCoO₃박막의 가스감지 특성

장재영,신정호,김정규,박기철,전춘배 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1

LaCoO_(3)(LCO) thin film sensors were fabricated on an alumina substrate by the r.f. magnetron sputtering. By varying the annealing temperature of the LCO films from 600℃ to 1000℃, we investigated X-ray diffraction pattern, electrical properties, and gas sensing properties of the films. The crystallinity was improved and the activation energy was increased with increasing the annealing temperature. The sensitivity of the LCO films for NH_(3) and CO gases was also increased with the annealing temperature. Sensing properties of LCO thin films were improved when the measuring temperature was 350℃ or more.

아산시 5대 저수지의 오염부하량 산정을 통한 수질오염 요인분석

장봉기;김민중;최재호;이종화 순천향대학교 기초과학연구소 2010 순천향자연과학연구 논문집 Vol.16 No.2

Five great reservoirs located in Asan city (Gungpyeong, Gahye, Togo, Masan, Bongjae) for each of the inflow of water pollutants (biochernical oxygen demand (BOD), suspended solids (SS), total nitrogen (T-P), total phosphorus (T- P) in units of pollutant loads were calculated by estimating. The results were as follows; The ratio of livestock wastewater for BOD, SS, T-N and T-P were occupied with the 58.7%, 85.4%, 59.1% and 91.2%, respectively of total water pollution load in the reservoir Gungpyeong. The ratio of livestock wastewater for BOD, SS, T-N and T-P were occupied with the 96.1%, 97.6%, 96.2% and203rmb 99.5%, respectively of total water pollution load in the reservoir Gahye. The ratio of livestock wastewater for BOD, SS, T-N and T-P were occupied with the 93.8%, 96.9%, 91.7% and 98.7%, respectively of tot~l water pollution load in the reservoir Togo. The ratio of livestock wastewater for BOD, SS, T-N and T-P were occupied with the 39.3%, 71.6%, 52.2% and 76.2%, respectively of total water pollution load in the reservoir Masan The ratio of livestock wastewater for BOD, SS, T-N and T-P were occupied with the 96.3%, 98.5%, 96.2% and 99.5%, respectively of total water pollution load in the reservoir Bongjae. Total amounts of each water pollutants was highest in the basin of reservoir Bongjae and the next Gahye, Togo, Masan. Reservoir Gungpyeong was lowest in five reservoirs located in Asan Clty. These results suggest that contamination of the reservoir inflow in Asan city, water pollution management for the reservoirs will be focusing on the livestock wastewater.

Wigner 분포 함수를 이용한 위상지연 함수에 대한 연구

장남영,은재정,강호정,최평석 國立 昌原大學校 産業技術硏究所 2000 産技硏論文集 Vol.14 No.-

작은 초점 심도를 갖는 원형 대칭 광시스템에 대하여 Wigner 분포 함수(WDF)를 적용해 얻은 위상 지연 함수와 초점 심도와의 관계를 설명한다. 일반적인 광시스템의 이차원의 원형 개구는 잘알려진 변환식에 의해 일차원 동공 함수로 변환되고 변환된 일차원 동공 함수는 다시 Wigner 함수로 표현된다. 일반적으로 일차원 함수를 Wigner 함수로 변환시키면 2차원 함수가 된다. 초점 심도와 위상 지연 함수와의 관계는 2차원 위상 공간(χ, ζ)으로 표현되는 Wigner 함수를 χ축으로 α만큼 기울이므로써 얻을 수 있다. 여기서 초점 거리 f를 1220mm, 구경이 12.5mm, 사용된 광파장 λ가 633nm일 때 α값에 따른 초점 심도의 변화를 수치해석 한다.

LaCrO₃후막 소자의 가스에 대한 감지 특성

장재영,박기철,신정호,김정규 慶尙大學校生産技術硏究所 1998 生産技術硏究所論文集 Vol.14 No.-

LaCrOa₃ thick-film sensors were fabricated on an alumina substrate by the screen printing method. The sensitivities for gases were investigated by varying the heat treatment temperatures of the films. The sensitivities of LaCrO₃ thick-film for ?? and NH₃ gases were better than those for CO and NO gases. The best condition of heat treatment was 450℃ and the optimal operating temperature of LaCrO₃ thick-film for the highest sensitivity was 400℃. Sensitivities of LaCrO₃ thick-film about at 3000ppm for ?? and NH₃gases were 85% and 95%, respectively.