• Feed Journal
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• v.2 no.7
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• pp.90-93
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• 2004

소에 있어서의 하절기 고온다습은 체력의 저하와 평상시에 비해 사료섭취량의 감소로 인한 유량이나 유질 등의 우유생산성, 분만 후 생식기의 회복이 지연되어 자궁내막염이 많이 발생됨에 따라 번식률이 저하되는 등 나쁜 영향을 미칠 뿐만 아니라 질병발생이 많아지게 한다.<중략>

• Korean Journal of Food Science and Technology
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• v.31 no.1
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• pp.122-127
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• 1999

Quality changes of Korean ginseng on microwave drying were determined in terms of water activity, crude protein, crude lipid, crude ash, dielectric properties, content of sugar, ginsenoside composion, microstructure. Korean fresh ginseng were subjected to four different processing : 3 min microwave drying and 2 min holding-24 hrs drying (MWI), 5 min microwave drying and 2.5 min holding-24 hrs drying (MW2), 3 min microwave drying and 2 min holding-12 hrs after hot air drying for 12 hrs drying at $45^{\circ}C$ (MWH1), 5 min microwave drying and 2.5 min holding-12 hrs drying after hot air drying for 12 hrs at $45^{\circ}C$ (MWH2), Water content was decreased 14.33% without shrinkage and water activity was 0.57 after microwave drying. Permittivity was increased as water content increased. As temperature increased, permittivity was increased until $40^{\circ}C$ and fast decreased over $40^{\circ}C$. Content of ginsenoside for MW1 and MW2 was higher than that of MWH1 and MWH2. Data of free sugar showed that there was no significant difference in each treatment. The MW2 dried ginseng showed a more compact structure than the MWH2 ginseng.

• Korean Journal of Food Science and Technology
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• v.31 no.2
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• pp.427-432
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• 1999

Changes in saponin composition and microstructure of ginseng by microwave vacuum drying were determined. Korean fresh ginsengs were subjected to four different processing : 3 min microwave vacuum drying and 2 min holding-24 hrs drying (MWVD1), 5 min microwave vacuum drying and 2.5 min holding-24 hrs drying (MWVD2), 3 min microwave vacuum drying and 2 min holding-12 hrs drying after hot air drying for 12 hrs drying at $45^{\circ}C$ (HMWVD1), 5 min microwave vacuum drying and 2.5 min holding-12 hrs drying after hot air drying for 12 hrs at $45^{\circ}C$ (HMWVD2). The water content was decreased until 16.82% without shrinkage and water activity was 0.54 after microwave vacuum drying. The lipid content was decreased after microwave vacuum drying (MVD). Glucose was increased after MVD while sucrose decreased. Ginsenoside-Rb1 and ginsenoside-Rc were decreased after MVD. Ginsenoside-Rg1 for MWVD2 and HMWVD2 was higher than that of MWVD1 AND HMWVD1. MWVD1 AND HMWVD1 dried ginsengs showed a more compact structure than the HMWVD2 and HMWVD2 ginsengs.

• Journal of the Institute of Electronics Engineers of Korea SD
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• v.37 no.1
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• pp.53-59
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• 2000

We propose a modified nonlinear fiber optic interferometer which can serve to generate binary optical pulse sequences for CDMA networks, and to decode them. In one arm cross-phase modulation between a CW signal and a counter- or copropagating high-power pulse takes place in sequences of segment connected via VDM couplers. Preliminary experimental results on code generation as well as autocorrelation and crosscorrelation are presented, using Sagnac interferometer. As we expected, the experimental results show that the outputs of the interferometer device are not summed simply on the basis of power, but the sin-squared version of it. Arbitrary codes can in principle be implemented.

• Proceedings of the Korean Society of Applied Pharmacology
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• 1993.04a
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• pp.133-133
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• 1993

DA-125의 rat blood중 분해반감기는 4.28분으로, DA-125는 정맥 투여후 신속히 M1으로 분해되었으며, DA-125는 투여 10분 후부터 검출되지 않았다. Mouse에 25mg/kg 정맥주사 한 후의 M1의 phamacokinetic parameter는 terminal t$\frac{1}{2}$ 344분, MRT 371분, Vss 25.7 $\ell$/kg, CL$_{total}$ 69.3 ml/min/kg이었으며 투여 2hr후에 M1및 대사체가 폐, 위, 신장등에는 다량 존재하였으나 심장에서는 검출되지 않았다. Rat에 10 mg/kg 정맥주사한 후의 혈장농도는 terminal phase에 도달하지 못하고 혈장농도가 변동을 나타내었다. 담즙으로의 배설은 주로 M2의 형태로 이루어졌으며 M1이 소량 차지하고 M3와 M4는 검출되지 않았다. DA-125는 rat 및 mouse liver homogenate에 의해 대사되어 FT-ADM(M1) ,13-dihy-dro FT-ADM(M2), 7-deoxy-adriamycinone(M3) 및 7-deoxy-13-dihydro adriamyci-none(M4)를 형성하였다. DA-125는 혐기, 호기 및 보효소, 종차에 관계얼이 반응개시 30분후에 약 90%가 분해되었으나 각 대사체의 생성여부 및 속도는 조건에 따라 변화하였다.

• Journal of Korean Public Health Nursing
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• v.29 no.2
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• pp.325-343
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• 2015

Purpose: This study was conducted in order to identify and describe the experiences of health care during pregnancy, birthing, and postpartum period for Vietnamese marriage immigrants. Methods: The participants were 15 Vietnamese married immigrant women who became pregnant and gave birth within the last five years. Data were collected by in-depth interview with Vietnamese women. Data were analyzed using Colaizzi's method of phenomenology. Results: Six theme clusters were extracted as follows: 'being left with no other option in loneliness and longing filled in a limited life', 'continued trials and errors amidst frustration and fear', 'silently following orders despite the quality of medical services that change with each medical care provider', 'compromise by selecting amidst confusion between the Korean way and the way at home', 'depending on family, who is the communication channel, but becoming disappointed', and 'finding the reason for existence and struggling by herself to become a mother amidst doubled confusion'. Conclusion: A program for effective empowerment of Vietnamese immigrant women should be developed. In addition multicultural family centered programs should be developed with emphasis on acceptance of women's culture, respect for her culture, and supports. Medical staffs and nurses should also improve culturally sensitive competence in order to provide care for immigrant women.

• Journal of Aquaculture
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• v.12 no.1
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• pp.39-45
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• 1999

In order to obtain the basic biological data for artificial seedling production of sea cucumber, Stichopus japonicus, the influence of water temperature and air dry for spawning induction, egg development and larvae rearing was investigated during the period from April, 1995 through September, 1995. Spawning induction rate by the water temperature was 6.0~17.5% and air dry was responsed 1.4~4.0%. Number of eggs spawned of Stichopus japonicus were $50~500\times10^4$ individuals, the fertilization and hatching rate were ranged 84.0~96.0%, 71.4~84.6% respectively. The fertilized egg of Stichopus japonicus appeared mean diameter of $154{\mu}m$. At a constant water temperature of $23^{circ)C$, it become 4 tell stage from fertilization after 2 hours 10 minutes, hatching larvae after 14 hours half, auricularia larvae after 3 days, doliolaria larvare after 11 days and pentactula larvae after 15 days ready for settlement. The suitable food in the larvae reared for 17 days after fertilization were shown the best growth and survival in the larvae food of Chaetoceros calcitrans. Optimum density for larvae rearing were maintained of the larval density lower than 2 individuals/ml.

• 전기의세계
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• v.27 no.5
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• pp.33-54
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• 1978

(차례) 1.산학협동심포지업 (1)우리나라에서의 연구개발과 산학협동 (2)산학협동과 산업계의 역할 (3)산학협동의 현황과 진로 2.학술회의A (1)전력게통의 계층구조와 협조원리에 관한 연구 (2)2중층괴상회전자 유도전동기의 이론해석 (3)초고주파가열장치에 사용하는 철공진변압기의 해석적 설계 (4)한국전기기시험연구소 대전력단락 시험설비설계 (5)직류전동기제어를 위한 Thyristor Chopper정류회로에 관한 연구 (6)선로의 개폐정보를 포함하는 전력계통의 상태추정 (7)단일신경세포에 대한 ITEM 신호 특성 3.학술회의B (1)MMM-1 Computer System의 설계 및 제작 (2)Adaptive Delta Modulation System의 성능비교 연구 (3)6GHZ FMD마이크로파 무선전송장치의 개발 (4)적선도에 의한 회로망함수의 결정 (5)동맥혈압의 해석과 그의 전기적 유사모델 (6)피부감각의 정보전달 특성에 관하여 (7)선형직접회로의 공정설계 및 그 특성 조성 (8)DH L.D의 전기적포화현상에 관한 이론적 해석 (9)Potocoupler를 이용한 Isolator 4.학술회의C (1)Al-Al$_{2}$O$_{3}$ -Al박막구조의 전기적 특성 (2)이종금속에 샌드위치된 고분자물질의 단락전조 (3)유전체가 일부체워진 직 6면체의 캐비티의 다중모오드 해석 (4)반도체 가스 검지소자의 제조 및 그의 전기적 특성 (5)실리콘 산화공정에 대한 실험적 고찰 (6)진공증착법에 의한 InSb 박막제도에서 열처리효과 (7)(Ba$_{1}$-xBix) Tio$_{3}$ PTC thermistor의 첨가량의 최적건안 (8)금속박막증착시 두께조절 5.특별강연회 (1)일본에 있어서의 절력계통공학연구 (2)Linear Motor의 최근개발동향량도 높았다. valine과 leucine 및 aspartic acid, glycine과 glutamic acid, leucine과 aspartic acid 간에는 고도의 정상관, glycine과 serine, valine과 phenylalanine, threonine과 proline, phenylalanine과 arginine, methionine과 glutamic acid, histidine과 lysine 간에는 유의 정상관, 그리고 isoleucine과 lysine 간에는 유의한 부상관이 있었다. 4. lysine 함량은 단백질 함량과 정산곤, isoleucine 함량은 단빅질 함량과 부상관을 보였으며, alanine, valine, leucine 함량은 지방함량과 각각 유의한 정산관을 보였다. 5. 대두 단백질은 7.5% acrylamide gel 전기영동에 의해 품종에 따라 12～16개의 구성분으로 분리되었으며, 이들중 주구성분들은 상대이동도가 0.06(a), 0.14(b). 0.24(d) 이었고, 구성분 b의 함량이 품종간에 가장 변이가 컸으며, 구성분 b는 그밖의 주요 구성분들의 함량과 부의 상관이 있었고, 구성분 a는 단백질 함량과 정상관이 있었다. 6. 종실단백질 구성분들의 조합 특성 면에서 공시 86품종은 11개 유형군으로 분류되었으며, 우리나라와 일본품종은 미국품종에 비해 단백질구성분 조성이 훨씬 다양하였다. 7. 이동도가 매우 빠른 단백질 구성분 o(Rm 0.77) p(Rm 0.81)를 모두 갖고 있는 품종은 3품종, 모두 갖고 있지 않은 품종은 1품종이었고, 나머지 82품종은 o나 p중 한 구성분을 갖고 있었으며 그 분포율은 30 : 65 이었는데 미국계 품종은 우리나라 품종에 비해 구성분 o를 간고 있는 비율이 현저히 적었다. 8. 대두 종실은 개화후 22일까지 완만히, 그 이후 20～30일간 급속히

• Proceedings of the KIEE Conference
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• 1987.07b
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• pp.1229-1232
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• 1987

본 논문은 N이 서로소인 두 자연수 $N_1$과 $N_2$로 분해되는 경우에 대하여 이산코사인 변환의 소인수 분해 계산기법 및 이를 위한 인덱스 매핑을 고찰하고 있다. 소인수 분해 알고리즘의 유도과정에 나타나는 관계식들을 표의 형태로 변형시키고, 이 인덱스 매핑 표들을 바탕으로 이산 코사인 변환을 구현하는 방법이 소개되어 있다.

• Journal of the Korean Society of Radiology
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• v.18 no.2
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• pp.65-71
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• 2024

To achieve high resolution and sensitivity of positron emission tomography (PET) for small animals, the detector is constructed using very thin and long scintillation pixels. Due to the structure of these scintillation pixels, spatial resolution deterioration occurs outside the system's field of view. To solve this problem, we designed a detector that could improve spatial resolution by measuring the interaction depth and improve sensitivity by using a quasi-block scintillator. A quasi-block scintillator size of 12.6 mm x 12.6 mm x 3 mm was arranged in four layers, and optical sensors were placed on all sides to collect light generated by the interaction between gamma rays and the scintillator. DETECT2000 simulation was performed to evaluate the performance of the designed detector. Flood images were acquired by generating gamma-ray events at 1 mm intervals from 1.3 mm to 11.3 mm within the scintillator of each layer. The spatial resolution and peak-to-peak distance for each location were measured in an 11 x 11 array of flood images. The average measured spatial resolution was 0.25 mm, and the average distance between peaks was 1.0 mm. Through this, it was confirmed that all locations were separated from each other. In addition, because the light signals of all layers were measured separately from each other, the layer of the scintillator that interacted with the gamma rays could be completely separated. When the designed detector is used as a detector in a PET system for small animals, it is considered that excellent spatial resolution and sensitivity can be achieved and image quality can be improved.