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BLDC 서보 모터용 One-chip DSP 컨트롤러 개발
조정목,김용재,조중선 국립7개대학공동논문집간행위원회 2004 공업기술연구 Vol.4 No.-
The Resolver usually used in industry is the absolute angle analog sensor that must be in order driving BLDC (brushless DC) motor, and it needs RDC(Resolver-to-Digital converter) for changing the output signal to digital to be applied to the SVPWM(Space Vector Pulse Width Modulation) algorithm. Commonly used S/W RDC needs trigonometric function. What it takes a lot of calculation time of processor is gotten at weak point. In this paper, S/W RDC is realized except trigonometric functions as a result of feedback resolver outputs after filtering using FIR filter. thus, processing time is reduced. So. One-chip DSP Controller operating the Vector Control, RDC, and SVPWM can be designed.
2-Bromoacetylnaphthalene을 螢光誘導體化劑로 利用한 Ibuprofen의 HPLC 分析에 관한 硏究
李允中,金容熙,曺正吉,禹炳虎 성균관대학교 약학연구소 1990 成均藥硏論文集 Vol.2 No.1
Abstract-A simple, rapid and high sensitive HPLC method for determination of ibuprofen is investigated. 2-Bromoacetylnaphthalene was used as the pre-column fluoresent derivatizing reagent for high performance liquied chromatography. Ibuprofen was derivatized quantitatively into fluorescent compound by reacting with 2-bromoacetylnaphthalene in the presence of 18-crown-6 ether in acetonitrile. The optimum conditions for the derivatization such as concentration of KOH, 18-crown-6 and 2-bromoacetylnaphthalene, reaction temperature and reaction time were investigated. The structure of ibuprofen derivative was confirmed from IR, mass spectra. The fluorescence properties of ibuprofen derivative were examined. The derivative was separated on a reverse phase column in isocratic elution mode using the secondary mixture of acetonitrile and water as the mobile phase. The effluent was monitored by fluorometer. The calibration plots for the peak area versus concentration of ibuprofen observed to be linear.(r=0.999)
李應昊,鄭秀烈,趙舜榮,錢重均,車庸準 釜山水産大學校 1983 釜山水産大學 硏究報告 Vol.23 No.1
까치복의 呈味成分에 관한 資料를 얻고자 核酸關聯物質, 유리아미노산, TMAO, TMA, betaine 및 총 creatinine을 分析하였다. 核酸關聯物質 중 IMP가 1.9μmole/g으로서 가장 많았고, 全核酸關聯物質에 대해 39.6%를 차지하였다. 유리아미노산 중 함량이 많은 것은 taurine, lysine, alanine 및 glycine 이고, 이들 네 가지 아미노산이 전유리아미노산의 68.2%를 차지하였다. 총 creatinine�량은 194.5mg/100g으로서 엑스分窒素에 대해 63.4%를 차지하였으며, TMAO 및 betaine 함량은 微量이었다. Omission test 結果 까치복의 呈味成分은 5'-mononucleotides 및 유리아미노산이 주된 구실을 한다는 것을 알았다. Yellowfin puffer, Fugu xanthopterus(Temminck et Schlegel), is one of the most palatable fishes in Korea. However, relatively little is known about the characteristics of its taste. In this study, the taste compounds including nucleotides and their related compounds, free amino acids, trimethylamine oxide, trimethylamine, betaine and total creatinine were analyzed, and their roles in tasting activity were investigated. The amounts of IMP was 1.9 μmole/g, and the ratio of IMP to the total nucleotides and their related compounds was 39.6%. The great portion of free amino acids in the extractives of yellowfin puffer muscle was occupied by taurine, lysine, alanine and glycine in order, and their content was 79.1% of the total free amino acids. Among the organic bases, total creatinine was abundant, and its nitrogen content was 63.4% of total extractive nitrogen. According to the results of the omission test, the main constituents of the characteristic taste of yellowfin puffer could be assumed as free amino acids and 5'-mononucleotides.
흰쥐 척수 및 등뿌리신경절에서 Tyrosine Hydroxylase 함유구조물의 분포
박매자,배용철,조희중,김지윤,김용주,김지윤 경북대학교 병원 1998 경북대학교병원의학연구소논문집 Vol.2 No.1
정상 흰쥐의 각 분절별 척수 및 등뿌리신경절에서 catecholamine 함유구조물의 분포를 알아보고자 tyrosine hydroxylase(TH)에 대한 항체를 이용하여 면역조직화학적 염색을 실시하였다. 그 결과 TH 함유신경세포는 목척수분절과 엉치척수분절에서 관찰되었다. 목척수분절의 TH 함유신경세포는 첫째와 둘째 목척수분절에서만 관찰되었으며 신경돌기가 잘 발달된 다각형의 세포인 것으로 보아 이들은 뇌줄기의 TH 함유신경세포군이 목척수분절로 연장된 것이라 생각된다. 그러나 엉치척수분절에서 관찰되는 대부분의 TH 함유신경세포는 세포돌기가 보이지 않고 세포체부분만 면역염색되어 관찰되는 것으로 보아 퇴화단계의 세포인 것으로 생각된다. TH 함유신경섬유는 척수의 모든 분절에서 관찰되었으며 이들 TH 함유신경섬유가 각 척수분절의 등뿔보다 배쪽뿔과 중간뿔에서 훨씬 높은 밀도로 관찰되는 것으로 보아 catecholamine은 척수에서 체성감각뿐만 아니라 자율신경계 및 운동신경계의 조절에 관여하리라 생각된다. 등뿌리신경절에서 관찰되는 TH 함유신경세포는 척수의 엉치분절에서 관찰되는 것과 마찬가지로 세포돌기가 거의 보이지 않고 세포체부분만 염색되어 보였다. 또한 등뿌리 신경절의 TH 함유신경섬유는 혈관의 벽을 나선형으로 감고 돌아가는 형태로 관찰되었으며 어느 것도 등뿌리신경절의 신경세포와 연관되어 관찰되지는 않았다. 이로 보아 정상 쥐의 등뿌리신경절에서 catecholamine은 신경세포 사이의 신경전달이나 졸절보다는 신경절 내의 혈류조절과 관계있을 것으로 생각된다. With the aim of gaining more insight into the catecholaminergic system in the nervous system of the rat, we have studied the precise distribution pattern of the tyrosine hydroxylase immunoreactive (TH-IR) fibers and soma in the spinal cord and dorsal root ganglion. In the dorsal root ganglion (DRG) TH-IR fibers were observed to run along the vessel wall, spirally and not found in the neural tissue itself. A few TH-IR fibers were found in the spinal nerve, not in the ventral root. Many TH-IR neurons were distributed in the L3, 4, 5, and 6 DRG but none of them were found in the other DRG segments. In the spinal cord, TH-IR fibers have shown sparse distribution all over spinal cord but relatively dense distribution in the ventral hom, intermediolateral column, lamina I of the dorsal horn of the cervical, lumbar, sacral, and coccygeal segment. TH-IR neurons were found in the interrmediolateral column, dorsal gray commissure, dorsal horn of the C1 and C2 segments and S1-4 segments. TH-IR neurons in the cervical segments were polygonal or spindle shaped with well developed processes. In contrast to this, TH-IR neurons in the sacral segments were oval or spindle shaped withe no processes. In conclusion, neurons in the DRG were not influenced by catecholaminergic nervous input. Intrinsic catecholaminergic nervous systems were found in both of spinal cord and DRG.
Crystal structure of the biotin carboxylase domain of human acetyl-CoA carboxylase 2
Cho, Yong Soon,Lee, Jae Il,Shin, Dongkyu,Kim, Hyun Tae,Cheon, Young Hoon,Seo, Chang Il,Kim, Yong Eun,Hyun, Young-Lan,Lee, Yoon Sup,Sugiyama, Kanako,Park, Sam-Yong,Ro, Seonggu,Cho, Joong Myung,Lee, Tae Wiley Subscription Services, Inc., A Wiley Company 2008 Proteins Vol.70 No.1
3D Cyber Museum Service의 Multicast performance Monitoring 구조 설계
조중근(Joong-Keun Cho),박인수(In-Soo Park),박용진(Yong-Jin Park),권용무(Yong-Moo Kwon) 한국정보과학회 2002 한국정보과학회 학술발표논문집 Vol.29 No.2Ⅲ
본 논문에서는 3D Cyber Museum Service에서의 효과적인 Multicast performance monitoring을 위한 receiver 기반의 분산 모델을 제안한다. 멀티캐스트 네트워크를 통해 전송되는 멀티미디어 서비스의 효과적인 performance monitoring을 위해서 사용자들이 경험하는 QoS를 사용자의 호스트상에서 보다 직접적으로 측정하고, 멀티캐스트를 사용함으로써 얻어지는 대역폭의 효율적인 사용에 대한 측정을 위한 모델을 설계한다.