벼 담수산파 재배시 파종량·질소분시·물관리 방법의 차이가 생육 및 수량성에 미치는 영향

권영립,권석주,조승현,최동철 원광대학교 2005 論文集 Vol.35 No.-

This study was carried out to investigate in connection with seeding rate according to the fertilizer application method and water management in direct seeding on flooded paddy surface. The total nitrogen and chlorophyll contents was decreased as increasing amount of seeding. The total nitrogen and chlorophyll contents were high in the strong drainage methods than the custom water management. LAI and dry mater recording where the seeding amount will increase to the fertilizer application method it increases consequently were low tendency from the site which omits the omitted the top dressing at tillering stage. The number of panicles per square metre was increased according to amount of seeding, but the number of spikelets per panicle was decreased. When omitted the top dressing at tillering stage and increasing the amount of seeding, the rice yield was high and amount of seeding was 89 kg per hectare. The results indicate that increasing of seeding rate and omission of fertilizer application with strong drainage at tillering stage was to reduce field lodging degree, to economy of water culture and to save labor for fertilization.

요통 환자에서 요통 및 방사통과 요추 자기공명영상의 이상소견에 대한 Tree모형의 활용

최영칠,손은주,이태용 건국대학교 의과학연구소 2002 건국의과학학술지 Vol.12 No.-

To detect the MRI findings related to The low back pain and sciatica according to age group, authors used tree model analysis of 80 patient's grading their low back pain and sciatica, with their lumbar MRI findings. And the results were as follows: 1. In teens and twenties(n=22), the low back pain was related to high maximum of spinal canal narrowing and large sum of disc degeneration, and the sciatica was related to the psoas spine ratio. 2. In thirties and forties(n=33), the sum of disc degeneration, the sum of foraminal narrowing, the maximum of disc degeneration affected the low back pain, and the sum of disc degeneration, disc herniation and maximum of canal narrowing were related to sciatica. 3. In fifties and sixties(n=23) the low back pain was related to large sum of foraminal narrowing and small psoas spine ratio, and thesciatica was largely affected by high maximum of foraminal narrowing and some by large sum of canal narrowing and large sum of disc degeneration.

배설강 기형 : 증례 보고 Case Report

최영칠,신현준 건국대학교 의과학연구소 1995 건국의과학학술지 Vol.5 No.-

The cloacal malformation is a congenital abnormaly in which urinary, genital, and intestinal tracts converge into a common flow structure, the cloaca. It is seen exclusively in phenotype female. The anomaly of the persistent cloaca results from partial failure of the urorectal septum to descend and devide the cloaca. Authors experienced a case of cloacal malformation of vaginal configuration with high recto-vaginal communication.

신생아의 골밀도와 관계된 방사선학적 변화에 관한 연구

최영칠 건국대학교 의과학연구소 1997 건국의과학학술지 Vol.7 No.-

Changes in bone denity were recognized in the long bones (humerus) of premature babies on plain x-ray radiographs of chests in short term interval. This study was designed to estimate the osteopenia of premature babies and to find reliable causes of osteopenia. Plain x-ray radiographies of 20 premature babies (group A) were taken on the day of birth and about 10 day after birth. The humeral cortial indeces and the patterns of bone density were evaluated each time. Gesational age, birth weight. duration of total parenteral nutrition and duration of phototherapy of subjective babies were recorded. For comparison, 20 term babies (group B) were studied, too. Stastistical significances were noted between the changes of bone density and gestational age and birth weight (P=0.0064, 0.0007). Decreased bone density were seen in premature babies in short interval. There is a significant relation between changes of bone density and durations of phototherapy (P=0.0233)

전북 지역 무선호출시스템의 전계강도 측정 및 지도작성

전칠환,고남영 群山大學校 1995 論文集 Vol.22 No.-

Paging system is widely used due to low price, easy portability and high receiving rate. But to increase the receiving rate, more paging base stations are needed. Construction of base station makes the company financial conflicts and to decide the place difficulties. In this paper, the field strength essential to increase serviceability and decide the place for base station are measured and mapped in Chonbuk aera according to channel. Result shows that the good receiving areas in Chonbuk are 846 cases of 1556 in channel 2,880 cases in channel 4, 803 cases in channel 5. Mountains area(Kochang, Muju, Sonchang, Jinan) shows bad receiving rate but city areas(Chonju, iksan and Kunsan) shows good receiving rate. Inside Building bad rates are shown. Field areas and coastal areas show good rate.

광섬유를 이용한 천문관측기기 개발에 관한 연구

김칠영,김덕찬,김희수 공주대학교 사범대학 과학교육연구소 1990 과학교육연구 Vol.22 No.1

The aim of this article is to indentify the basic properties of optical fiber and to enlarge the sphere of observation study by using it in astronomical instruments. In addition we will search the possibility of optics application through astronomical observation experiment using optical fiber. We arranged basic properties about optical fiber, such as the principle of penetration of optical fiber, transmission properties and its treatment techniques. We also measured attenuation(α) and projection rate(P) of optics transmission through the experiment of 1mm Φand 3mm Φfiber using 16inch cassegrain reflector and photoelectric photometry and K.U.A.O.(Kongju University Astronomical Observatory). From the result of studying the application field of optical fiber, we are able to expect the development of various observation technique, great enlargement of observation study field and elevation of accuracy rate. Through the observation experiment we can attract the following results. 1. The attenuation of plastic fiber is all 0.1dB/m in U. B. V. filter. 2. The loss of optics in optical fiber edge section in more than 0.6. 3. The loss in short plastic fiber is due to the loss in edge section. We can lead the following conclusion about the use of plastic fiber from above results. 1. The attenuation of plastic fiber is larger than that of silica fiber, but it doestn`t matter if only we use it in a short length. 2. Plastic fiber is easy to treat edge section because of low fusion point, and its diameter is so large that we can use the optical fiber in astronomical observation instruments, if we can reduce the loss rate by reflection with improving the edge section treatment technique of plastic fiber.

자기공명영상에서 신속 FLAIR(Fluid-Attenuated Inversion Recovery) 기법을 이용한 뇌척수액의 흐름메 관한 연구

최영철,전혜정,신현준,박정희 건국대학교 의과학연구소 1999 건국의과학학술지 Vol.9 No.-

The use of MRI to study CSF flow in the brain was mainly by flow void signal on T2WI or hydrodynamic study with phase-contrast cine MRI. Authors pay attention to high signal intensity in CSF passway on fast FLAIR MR image of the brain, usually known as the artifact. The conclusions are as below; 1. The high signal intensity appeared in CSF passway on fast FLAIR MR image of the brain near constantly. 2. The high signal intensity was best visualized on image perpendicular to the CSF flow. 3. The high signal intensity was related to the velocity of the fluid not to the direction of the fluid.

Cathode materials of Li ion battery

심영재,문성인,형유업,도칠훈,윤문수 국립경상대학교 공과대학 부설 첨단소재연구소 1994 尖端素材 Vol.4 No.-

Li ion 2차전지는 높은 전지전압, 낮은 자기방전율, High Energy Density High Power Density Non-Toxic, No Memory Effect등의 우수한 특성을 보유하고 있고, 환경적인 측면에서 Lead Acid 전지 및 Ni/Cd 전지 등과 같은 Pb, Cd 및 Hg 등으로 인한 환경오염문제가 없는 고성능 신형전지로써, 92년에 SONY사에서 최초의 시제품을 내놓은 이래 현재 소형녹음기, 캠코더 및 셀룰라폰용으로 시판되고 있으나 세계적으로 Li ion 전지를 생산할 수 있는 회사는 일본의 몇몇 기업으로 한정되어 있는 실정이다.

스킨스쿠버 의복재료의 단열력에 관한 연구

김칠순,권영하 경희대학교 디자인연구원 2000 예술· 디자인학연구 Vol.3 No.1

The purpose of this study was to determine the thermal resistance values of Skinscuba clothing material in the current Korean market. Physical properties such as thermal resistance values, tensile strength, air permeability, thickness were measured to identify fabric characteristics. Also, we conducted statistical analysis to find out relationship between thermal resistance values and physical properties. The results of this study are as follows: 1.People used dry suit or wet suit for skinscuba diving which was made of butyl or neoprene material. The strength of butyl was higher than that of Neoprene. However thermal resistance and elastic recovery of neoprene were higher than those of butyl. 2.Thermal resistance values were proportional to thickness of material. Also, thermal resistance was affected by layering systems. Thermal resistance in single layering system was higher than in multiple layering system, when their system have the same thickness. Thermal resistance was found to be higher when material cell room was bigger.

식변광성 44 i Bootis의 주기 변화

김칠영,김수남,김희수 공주대학교 사범대학 과학교육연구소 1992 과학교육연구 Vol.23 No.1

The photolectric observations were carried out for a W-UMa type eclipsing binary 44i Boo in eight nights between March and May 1991, using the 40 ㎝ telescope of Kong-Ju National University Observatory. A star of HR 5581(V=5??.62, F7V) was used as a comparison star, for it is near in the celestial sphere and similar spectral type with 44i Boo. A total of 210 observations were made, respectively, in V and B band. From the observations, we obtained the new period of P=0.2678150 day shorter than known period. The period has increased still 1986, but repidly decreased from 1986. It seems that the increment is caused by the cataclysmic phenomena and that the decrement is caused by the orbital light-time effect to the tertiary.