논에서 우분액비 시용이 총체보리 및 이탈리안 라이그라스의 생산성과 사료가치 및 환경오염에 미치는 영향

최기춘,나상필,정민웅,임영철,박형수,김종근,김원호,김맹중,최기준,김명화,이상락,김다혜,육완방,Choi, Ki-Choon,Na, Sang-Pil,Jung, Min-Woong,Lim, Young-Chul,Park, Hyung-Su,Kim, Jong-Geun,Kim, Won-Ho,Kim, Maeng-Jung,Choi, Gi-Jun,Kim, Myeong-Hwa,L 한국축산환경학회 2012 축산시설환경학회지 Vol.18 No.2

본 연구는 논에서 조사료 생산을 위한 작부형태별 우분액비의 시용효과를 규명하기 위하여 총체 벼 재배 후 우분액비 시용에 따른 총체보리 및 IRG의 생산성, 사료가치, 토양성분 및 용탈수중의 무기물 농도를 조사하였다. 본 연구는 2006년 5월부터 2009년 4월까지 3년 동안 전라북도 김제군 백산면 시험포장에서 완전임의배치 3반복으로 수행되었다. 총체보리의 2년간 평균수량은 7,520 kg/ha, 그리고 IRG는 평균 10,320 kg/ha으로 IRG가 총체보리 보다 현저하게 높은 수량을 보였다 (p<0.05). 이탈리안 라이그라스는 1번초가 2번초 보다 약 2배 이상의 수량을 보였다. IRG의 조단백질 함량은 총체보리보다 높았고 NDF, ADF 및 TDN 함량은 작물간에 큰 차이는 보이지 않았다. 경작형태별 우분액비 시용에 따른 토양내 pH, $P_2O_5$, T-N, OM 농도는 시험전에 비해 시험종료 후에 현저하게 증가하는 경향을 나타냈다 (p<0.05). 경작형태별 우분액비 시용에 따른 토양내 Ca, Na, Mg 및 K 농도는 시험전에 비해 시험종료 후에 현저하게 증가하는 경향을 나타냈다 (P<0.05). 경작형태별 우분액비 시용에 따른 용탈수중 $NH_4$-N, $NO_3$-N, $PO_4$-P, Cl, Ca, K, Mg, Na의 농도는 경작형태에 따른 확실한 차이를 보여주지 않았다. 따라서 논에서 우분액비를 이용하여 동계작물을 재배할 경우에는 수량도 중요하지만 환경적인 부분도 고려하여 우분액비를 이용해야 한다. This study was conducted to investigate the effects of cattle slurry on productivity of whole crop barley and Italian ryegrass and environmental pollution in paddy land. Cropping systems used in this study were consisted of two designs, such as whole crop barley applied with cattle slurry (WCB) and Italian ryegrass applied with cattle slurry (IRG). The field experiments were conducted on the clay loam at Backsanmyun, Kimje, Chunlabukdo province in Korea for three years (May 2006 to Apr. 2009). This study was arranged in completely randomized design with three replicates. The yields of WCB and IRG were 7,520 kg/ha and 10,320 kg/ha, respectively. The yields of IRG significantly increased as compared with that of WCB (p<0.05). The yield of Italian ryegrass in 1st cutting time was about 2-fold higher than that of 2nd cutting time. The contents of crude protein of IRG were higher than that of WCB. However, the contents of NDF, ADF and TDN were no difference between WCB and IRG treatments. The pH, and contents of T-N, $P_2O_5$ and organic matter (OM) in soil samples collected at the end of the experiment increased as compared with those at the beginning of the experiment (p<0.05). After the end of experiment, the concentrations of CEC (Ca, Na, Mg and K) in soil samples collected at the end of the experiment were remarkably higher than those at the beginning of the experiment (p<0.05). The concentrations of $NH_4$-N, $NO_3$-N, $PO_4$-P, Cl, Ca, K, Mg and Na in leaching water in paddy land cultivated with WCB and IRG were no difference between WCB and IRG treatments.

GaN 에피층의 자극방출 특성

나선용,이형규 충북대학교 컴퓨터정보통신 연구소 2000 컴퓨터정보통신연구 Vol.8 No.2

GaN 에피층의 자극 방출과 이득 특성을 측정하고 해석하였다. 시료들은 저압 금속 유기물 화학증착기를 이용하여 사파이어 기판 위에 성장되었다. 표면 방출 실험 방법에 의하여 측정한 방출 특성은 여기 광세기가 0.8 MW/cm2 이상일 때 자발 방출과 함께 375 nm의 파장에서 자극 방출을 보였다. 측면 방출 실험 방법에 의해 측정하면 자극방출하는데 필요한 임계 여기 광세기는 절단면의 낮은 반사율로 인해 1.4 MW/cm2를 보였다. 임계 광세기보다 강한 여기광의 광의 길이를 변화시킬 때 측면 방출광의 파장-적분강도는 비 선형으로 증가함을 관측하였다. 이로부터 광이득을 계산하였고 그 결과 최대 이득 1400 cm-1을 얻었다. The stimulated emission and the optical gain characteristics of GaN epitaxial layers were measured and interpreted. Samples were grown on sapphire substrates in a low pressure metal-organic chemical vapor deposition system. In the surface emission mode, the stimulated emission from the GaN exhibited at 375 nm along with the broad spontaneous emissions when the excitation power density was above 0.8 MW/cm2. In the edge emission mode, however, its threshold optical intensity for the stimulated emission was estimated to be 1.4 MW/cm2 due to low reflection from the rough cleaved vertical plane. When the excitation intensity was above the threshold, the wavelength-integrated emission intensity was observed to increase non-linearly with increasing the cavity length. The calculated gain was 1400 cm-1 at its maximum.

우골유도합성골이 세포 증식 및 염기성 인산분해 효소 활성에 미치는 영향

현하나,최희인,유형근 원광대학교 치의학연구소 2003 圓光齒醫學 Vol.12 No.2

The ultimate goal of periodontal therapy is to promote the regeneration of lost periodontal tissue, there have been many attempts to develop a method to achieve this goal, but none of them was completely successful. The purpose of this study was to evaluate the effects of BBP?? on alkaline phosphatase(ALP) activity in human fetal osteoblast (hFOB1). The results of this study were as follows, BBP?? didn't show any significant increased cell proliferation and cell activity in the human fetal osteoblast as compared to non-supplemented controls at 2 and 4 day. In ALP activity, 100 ㎍/㎖ BBP?? treated group showed significantly increased value than negative control group.

실시간 비대면 토의 활동에서 수강생들이 경험하는 몰입의 양상 및 몰입 모형에 관한 연구 : Y대학의 ‘글쓰기’ 수업을 중심으로

공나형 이화어문학회 2021 이화어문논집 Vol.53 No.-

본고는 몰입 이론을 적용하여 대학교 교양 수업(작문)에서 웹 매개의 실시간으로 이루어지는 비대면 토의 동안 학습자들이 겪는 몰입의 경험을 분석하는 데 있다. 이를 통해 본고는 비대면 토의의 형식적·내용적으로 학습자들의 몰입을 도모할 수 있는 방안을 강구하고자 한다. 이를 위하여 먼저 선행 연구에 근거하여 몰입 모형을 제시하고, 자기 보고 설문을 통해 몰입 결과의 성공 여부를 조사하였다. 다음으로 개방형 질문으로 수집된 몰입 과정에 대한 응답은 질적 분석을 실시하였다. 결과는 다음과 같다. 몰입을 성공적으로 이끄는 요소로 원격현존감의 비중이 가장 낮았고, 본질적 흥미가 가장 높은 것으로 드러났으며 몰입의 실패에 가장 큰 영향을 주는 요소는 관여로 드러났다. 본고는 이후 질적 연구 방법론을 사용하여 학습자들이 토의 활동에서 겪는 몰입의 과정을 구성 요소인 원격현존감, 주의 집중, 관여, 본질적 흥미에 따라 살피고 교육적 함의를 도출하였다. 이 연구를 통하여 본고는 작문 교육에서 학습자들의 몰입도를 증진시키기 위한 화상 토의의 형식적·내용적 측면의 방향성을 논의하였다. The purpose of this study is to analyze the learners' flow experience during online small-group discussion activities in college writing classes by applying Flow theory(FT). To this end, this paper strives to find ways to increase learners' flow in these activities. First, a flow model was designed to analyze the flow experience of the learners participating in the activities based on previous studies. Next, based on this model, this study conducted a self-report questionnaire for learners to investigate their success in the aspect of flow experience. Based on the results, the responses collected as open-ended questions were analyzed using qualitative research methodologies. It was found that a portion of the telepresence factor was the lowest and the intrinsic interest factor was the highest in successfully leading the result of flow experiences. Finally, this study presents the process of flow experiences that learners experience in discussion activities through qualitative analysis, dependent on factors of telepresence, focus attention, engagement, and intrinsic interest. This paper discusses the direction of online small-group discussion to enhance the learners' flow in writing classes.

대퇴-대퇴동맥간 우회로술 후 하지 허혈증상 재발 및 이식편 폐색의 원인

김형기,김영욱,허승,나목찬 대한혈관외과학회 2002 Vascular Specialist International Vol.18 No.1

With increasing number of high-risk advanced atherosclerotic patients, crossover femoro-femoral pypass (FFB) became commonly chosen extra-anatomic bypass for symptomatic iliac artery occlusive disease. But the causes FFB graft failure have not been clarified yet. Purpose: We aimed to investigate the natural course of native artery disease, the causes of graft occlusion and recurrent leg ischemia after FFBs. Method: Among 162 primary FFBs for ??atherosclerotic iliac occlusive disease, 45 patients who underwent follow-up arteriography for recurrent ischemic symptom were enrolled. We investigated the interval changes between initial preoperative and follow-up angiograms and categorized then as inflow, outflow and/or graft lesion into stenosis >50% or occlusion. And the patients were divided into 2 groups as patent FFB group and occluded FFB group. We compared interval changes on angiograms between patient and occluded FFB groups to find out any difference and tried to determine the ultimate causes of recurrent leg ischemia considering not only the interval changes but the preexisting, untreated leg arterial lesions. Result: The follow-up angiography was most commonly performed within 1 year after FFV with mean interval of 21.2 ± 21.6 months. Interval changes between 2 angiograms were 24 (53.3%) FFB grafts occlusion, 8 (17.8%) inflow iliac disease progression, and 26 (57.8%) outflow arterial occlusion. Comparing the interval changes between patent and occluded FFB groups, the significantly higher frequency of outflow occlusion was noted in occluded FFB group (75% ??vs 38.1%, P=0.012). The most common finding on follow-up ??angiongram responsible for the recurrent ischemia was also outflowarterial occlusion even in patent FFB group. Conclusion: The most common cause of graft occlusion and recurrent leg ischemia was outflow arterial occlusion after FFB.

족삼리의 전기침 자극에 대한 개구반사 크기의 변화

이상호,나창수,송형근,서영아 大韓小兒齒科學會 1998 大韓小兒齒科學會誌 Vol.25 No.4

The purpose of this study was to investigate the effect of various electroacupuncture duration induced by acupuncture point-Zusanli(S36) electrical stimulation on inhibition of amplitude of digastric electromyogram (dEMG)evoked by noxious electrical stimuli around the mental foramen. <Experiments were conducted on adult rats (SD) were anesthetizde with> intraperitoneal sodium pentobarbital in an initial dose of 50mg/kg and maintenance doses of 4.5mg/kg/h were given through a cannula in the femoral vein using a constant infusion pump. A pair of stimulating electrodes were inserted for noxious stimuli around the mental foramen. An irritant electronic stimuli pulse (0.2 Hz,0.1 ms duration) was produced with an intensity of about 1.5-2 times threshold for evoking the dEMG. The anterior belly of the digastric muscle was exposed and a pair of 0.1mm wire electrodes were inserted for dEMG recording. Acupuncture point stimulation on Zusanli (2 Hz, 250㎲, biphasic pulse. 2 V) was delivered by Dental Electronic Anesthesia (3M,U.S.A). For periods of electronic stimulation of 10, 20, and 30min, the amplitudes of dEMG were measured on the oscilloscope and on the monitor connected to the amplifier. The following results were obtained: The dEMG was decreased to 73.4% of that in the control set after 10 min electroacupunture stimulation (Group Ⅰ): The dEMG was decreased to 77.1%(10min), 54.0% (20min)of that in the control set after 20minutes of electroacurunture stimulation (Group Ⅱ). The dEMG was decreased to 73.7% (10min), 61.9%(20min), 76.2%(30min) of that in the control set after 30 min of electroacupunture stimulation (Group Ⅲ). From these results, it may be that in the electroacupuncture stimulation on the Zusnali resulted in a reduction of amplitude of daEMG and that the most effective electroacupuncutre stimulation period was 20min.

눈알고둥, Lunella coronata coreensis의 생식주기

오성립,나오수,이영돈,김형배 제주대학교 해양연구소 2000 해양자원연구소연구보고 Vol.24 No.-

성장기 어린이에서 상악 중절치 조기 상실 후 치조골 소실

나혜진,송제선,이제호,최형준,김성오,손흥규,최병재 大韓小兒齒科學會 2012 大韓小兒齒科學會誌 Vol.39 No.1

어린이는 8-10세 경에 외상을 자주 받으며 구강 내에서는 상악 절치부가 호발하는 부위이다. 외상으로 인하여 상악 절치가 상실되면 어린이에게 합병증을 야기할 수 있으므로 가능한 한 상악 절치를 유지해야 하지만 조기 상실되는 경우가 있다. 상악 절치의 조기 상실로 인한 합병증으로는 심미적 문제나 치조골의 수직적 높이와 수평적 너비의 감소, 인접치의 경사, 악궁 장 경 감소 등이 있다. 그 중에서 치조골이 소실되면 보철적 수복 시에 기능성과 안정성, 심미적인 면에 영향을 준다. 이 증례는 외상으로 인하여 상악 중절치가 조기 상실된 9세 여아와 6세 남아에서 각각 5년 5개월, 3년 7개월 후의 치조골 소실 정도를 cone beam computed tomography와 진단 모형 상에서 관찰하였기에 보고하는 바이다. The anterior maxillary incisor is the most traumatized region in the mouth and trauma is frequent between the ages of 8-10. Traumatic loss of teeth, can lead to many complications in children. Thus, as possible to keep traumatic teeth, but if you need extractions There may be. Complications occur and early tooth loss is frequent. Complications of early loss of central incisors are esthetic compromise, loss of vertical and horizontal width, height, contour of alveolar bone, tilting of adjacent teeth, arch length loss. Alveolar bone loss may affect normal function and stability, and results in esthetic problem for future prosthesis restoration. The 9-year-old girl and 6-year-old boy got early loss of upper central incisor. The amount of alveolar bone resorption was measured using cone beam computed tomograph and cast analysis.

눈알고둥,Lunella coronata coreensisd의 생식주기

오성립,나오수,이영돈,김형배 제주대학교 해양연구소 2000 해양과환경연구소 연구논문집 Vol.24 No.-

We investigated reproductive cycle of the turban shell. Lunella coronata coreensis with the histological preparation of gonads and the gonadosomatic index (GSI). The turban shells were collected at the intertidal zone of Hamdeok in Jeju-Do from December. 1995 to October. 1996. The gonad was located on the surface of the liver below the stomachal caecum Posterior spiral meat part of the shell. GSI value began to increase from May as water temperature increased and reached its maximum value in August both male and female which were 56.94 and 61.88. respectively. GSI started to decrease from September thereafter. maintaining relatively low value from January to March. The reproductive cycle of L. coronata coreensis could be grouped into five successive developmental stages : multiplicative stage (female: February to April. male. April to May). growing stage (female: April to June, male: June). mature stage (female: June to August, male: July to August). ripe and spawning stave (August to September). And degenerative and recovery stage (October to March). The spawning of the turban shell occurred from August to September and the main spawning period appeared in September. The turban shell. L. coronata coreensis appeared to be gonochoristic species. Sex ratio of female to male was 1.6 : 1.0 (P > 0.05).

만성 견비통에 대한 동씨침 치료의 무작위 대조군의 임상 연구

김찬영,권나현,신예지,남동우,김건형,김종인,최도영,이윤호,이재동 WHO COLLABORATING CENTRE FOR TRADITIONAL MEDICINE 2007 東西醫學硏究所 論文集 Vol.2007 No.-

Objectives : To observe the effect of acupuncture treatment in chronic shoulder pain patients. Methods : 36 voluntary patients were randomly assigned to an acupuncture treatment group(E GrouP, n=18) and a control group(C GrouP, n=18). The E Group patients received acupuncture treatment on LI_(15), TE_(14), GB_(21) and Master Dong's acupuncture points, Shin-gwan and Gyun-joong, twice a week for four weeks. The C Group patients received no treatment. All patients in both groups were instructed to practise self exercise in their daily lives. Evaluations were made at baseline and after four weeks of study. The Constant Shoulder Assessment(CSA), Shoulder Pain and Disability Index(SPADI) and the patient's subjective pain was measured by Visual Analogue Scale(VAS). The obtained data was analyzed. Results '. The E Group showed significant(p<0.05) improvement in CSA, SPADI and VAS after four weeks of treatment. The C Group showed significant(p<0.05) improvement in CSA, but the change of SPADI and VAS was insignificant(P>0.05). CSA and SPADI of E Group significantly(p<0.05) improved compared to the C GrouP, but the difference of VAS change in the two groups was insignificant(p>0.05). Conclusions : Four weeks of acupuncture treatment significantly improved CSA, SPADI and VAS. The improvement of CSA and SPADI was significant(p<0.05) compared to untreated patients.