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대학생을 위한 예비 부모 교육 프로그램 개발을 위한 연구
윤기영,전효숙,박상임,이미숙,이석란,박수옥 서원대학교 학생생활연구소 1998 학생생활연구 Vol.16 No.-
The purpose of this study are to examine reference materials, existing lecture analysis, investigate how student response about new lecture model and to project the basic direction of pre-parent education program. The result of this study are as follows ; <Lecture Model : Parent and Child> Sequence Theme 1 Introduction, Positive Self-Concept 2 Love and Sex 3 Friends versus Lovers 4 Marriage 5 Parenting and Parent's Role 6 Pregnancy and Embriology 7 Brith 8 Middle Term Exam 9 Parent's Role for Infant and Toddler 10 Parent's Role for Child 11 Parent's Role for Youth 12 Society and Environment for Child Care 13 Communication for Parent-Child 14 Problem solving method for Child Care 15 Parent in Future 16 Final Exam
서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)
김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2
Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.
Normally Off Single-Nanoribbon <tex> $\hbox{Al}_{2} \hbox{O}_{3}\hbox{/GaN}$</tex> MISFET
Ki-Sik Im,Ryun-Hwi Kim,Ki-Won Kim,Dong-Seok Kim,Chun Sung Lee,Cristoloveanu, S.,Jung-Hee Lee IEEE 2013 IEEE electron device letters Vol.34 No.1
<P>A single-nanoribbon Al<SUB>2</SUB>O<SUB>3</SUB>/GaN metal-insulator-semiconductor field-effect transistor (MISFET) has been fabricated. The fabricated device exhibits normally off operation with a threshold voltage of 2.1 V. The device also exhibits superior performances such as a maximum drain current density of 1.51 A/mm, a maximum transconductance of 580 mS/mm, and a field-effect mobility of 293 cm<SUP>2</SUP>·V<SUP>-1</SUP>·s<SUP>-1</SUP>. This is because the electron concentration in the GaN channels can be increased due to the enhanced gate controllability, which, thus, effectively screens the field lines from the interface traps or the defects near the channels to improve the electron mobility in the channel. The nanoribbon Al<SUB>2</SUB>O<SUB>3</SUB>/GaN MISFET is a very promising candidate for high-performance normally off GaN FETs.</P>
Ki-Sik Im,Jong-Bong Ha,Ki-Won Kim,Jong-Sub Lee,Dong-Seok Kim,Sung-Ho Hahm,Jung-Hee Lee IEEE 2010 IEEE electron device letters Vol.31 No.3
<P>A normally off GaN MOSFET was proposed by utilizing an extremely high 2-D electron-gas density (> 10<SUP>14</SUP> / cm<SUP>2</SUP>) at an AlGaN/GaN heterostructure as source and drain, which can be obtained by controlling the tensile stress accompanied with the growth of GaN on silicon substrate. The fabricated MOSFET with an Al<SUB>2</SUB>O<SUB>3</SUB> gate insulator exhibited excellent device performance, such as a threshold voltage of 2 V, drain current of 353 mA/mm, extrinsic transconductance of 98 mS/mm, and field-effect mobility of 225 cm<SUP>2</SUP>/V·s.</P>
우제석(Jae Seok Woo),장선식(Sun Sik Jang),임석기(Seok Ki Im),이석동(Seok Dong Lee),이명식(Myeung Sik Lee),박정용(Jung Yong Park),홍성구(Seong Koo Hong),이성실(Sung Sill Lee),이상민(Sang Min Lee) 한국생명과학회 2011 생명과학회지 Vol.21 No.10
본 연구는 비지박을 이용한 섬유질발효사료(TMF) 급여가 육성기 한우 암소의 증체, 사료섭취량 및 체형변화에 미치는 영향을 구명하기 위하여 수행하였다. 6개월령 한우 암소 30두(평균체중125.9±12.0 kg)를 공시하여 3처리로 각각 10마리씩 완전 임의배치하여 6개월간 사양시험을 수행하였다. 처리구는 T1 (볏짚 자유급여와 배합사료(체중1.7%/일) 제한급여구), T2(TMF 자유 급여구) 및 T3 (TMF, 볏짚 자유급여와 배합사료(체중 1.0%/일) 제한급여구)로 수행하였다. 섬유질발효사료는 비지박 60%, 옥분 16.5%, 밀기울 10.4%, 볏짚 5%, 왕겨 7%, 요소 0.5%, 고토석회 0.5%, Lactic acid bacteria 0.1%를 첨가하여 제조하였다. 섬유질발효사료의 화학적 성분과 pH 값은 저장 0, 24, 48 및 72시간에 측정하였다. 비지박을 이용한 TMF의 저장기간에 따른 결과에서 건물, 조지방, 및 조섬유의 함량은 차이가 없었다. 저장 72시간에서 ADF 및 NDF함량은 0시간에서 보다 각각 9.52 및 3.15% 유의적으로 감소하였다(p<0.05). pH 또한 저장시간에 따라 점점 감소하였다. 체중, 사료섭취량 및 일당증체량은 TMF 급여구(T2, T3)에서 T1급여구 보다 높았다(p<0.05). 체형변화에 있어서도 T1처리구 보다 TMF 급여구가 높았다(p<0.05). 따라서 본 연구의 결과 비지박을 이용한 TMF 사료의 급여는 육성기 한우 암소의 발육을 향상시키는 것으로 나타났다. This study was conducted to determine the effects of total mixed fermentation (TMF) with bean curd dregs on body weight gain, feed intake and body size of growing Hanwoo heifers. Thirty Hanwoo heifers, 6 months of age and weighing 125.9±12.0 kg, were randomly allocated to 3 experimental groups of 10 animals each for a 6-month feeding trial. The groups were T1 (rice straw offered ad libitum with restricted (1.7% BW/day) concentrate), T2 (TMF only offered ad libitum) and T3 (TMF and rice straw offered ad libitum with restricted (1.0% BW/day) concentrate). TMF feeds were composed of 60% bean curd dregs, 16.5% corn meal, 10.4% wheat bran, 5% rice straw, 7% rice hulls, 0.5% urea matter, 0.5% magnesia lime and 0.1% lactic acid bacteria. The chemical composition and pH value of TMF feeds were measured at 0, 24, 48 and 72 hr after storage. In TMF with bean curd dregs, there were no differences in concentrations of DM, EE, and CF according to storage periouds. The ADF and NDF at 72 hr of storage time showed a significant decrease (9.52 and 3.15 %, respectively) compared to 0h of storage time (p<0.05). The value of pH was gradually decreased during the storage periods. Body weight gain, feed intake and average daily gain were higher in the TMF groups (T2, T3) compared to the T1 group (p<0.05). Changes in body size were also higher in the TMF groups compared to the T1 group (p<0.05). Thus, the present results indicate that TMF with bean curd dregs may help improve growth performance in growing Hanwoo heifers.
Survey on the Incidence of Reproductive Disorders in Dairy Cattle
Lim, Hyun-Joo,Yoon, Ho-Beak,Im, Harim,Park, Jihoo,Cho, Yong-il,Jeong, Yeon-Seop,Ki, Kwang-Seok,Im, Seok-Ki The Korean Society of Embryo Transfer 2015 한국동물생명공학회지 Vol.30 No.1
Intensive genetic selection has resulted in modern dairy cow with very high milk yields but reduced fertility, due mainly to an increase in reproductive disorders. The study was conducted to estimate the proportion of reproductive disorders among dairy cattle. The factors analyzed were; milk yield, cow parity, periparturient disorders, and reproductive status. The result of this study showed the incidence of reproductive disorders in high yielding dairy cows was prevalent. Repeat breeding was the major postpartum reproductive problem comprising (42.3%) of the samples. Higher reproductive disorders were also associated with lower parity. These disorders subsequently reduced reproductive performance by prolonged intervals from calving to first artificial insemination and from calving to pregnancy. Abnormalities in the reproductive system such as repeat breeder, silent heat, anestrous and ovarian cysts, as well as lower fertility have been recorded during the summer months (June to August). In conclusion, the study revealed that incidence of repeat breeder is mostly prevalent in dairy cows. Moreover, the incidence of reproductive disorders was higher in summer season and hence appropriate preventive and or therapeutic measures as per the type of abnormalities need to be undertaken.
Survey on the Incidence of Reproductive Disorders in Dairy Cattle
Hyun-Joo Lim,윤호백,Harim Im,Jihoo Park,Yong-il Cho,Yeon-Seop Jeong,Kwang-Seok Ki,Seok-Ki Im 사단법인 한국동물생명공학회 2015 한국동물생명공학회지 Vol.30 No.1
Intensive genetic selection has resulted in modern dairy cow with very high milk yields but reduced fertility, duemainly to an increase in reproductive disorders. The study was conducted to estimate the proportion of reproductivedisorders among dairy cattle. The factors analyzed were; milk yield, cow parity, periparturient disorders, and reproductivestatus. The result of this study showed the incidence of reproductive disorders in high yielding dairy cows was prevalent. Repeat breeding was the major postpartum reproductive problem comprising (42.3%) of the samples. Higherreproductive disorders were also associated with lower parity. These disorders subsequently reduced reproductiveperformance by prolonged intervals from calving to first artificial insemination and from calving to pregnancy. Abnormalities in the reproductive system such as repeat breeder, silent heat, anestrous and ovarian cysts, as well aslower fertility have been recorded during the summer months (June to August). In conclusion, the study revealed thatincidence of repeat breeder is mostly prevalent in dairy cows. Moreover, the incidence of reproductive disorders washigher in summer season and hence appropriate preventive and or therapeutic measures as per the type of abnormalitiesneed to be undertaken.