전송율 향상을 위한 다단계 상호연결망

신용태,이철희,조민수 崇實大學校 生産技術硏究所 1996 論文集 Vol.26 No.1

This paper proposed two Multi-statge Interconnection Network(MIN) that had multiple outlet to improve throughput. These proposed MINS were made of Clos MIN, well known Non-blocking MIN. These proposed MINs were called ECFS(Expanded Clos Switch Fabric) adn TCSF(Tandem Clos Switch Fabric). ECFS was consist of expanded number of switchs for multiple oulet. TCSF was consist of serial Clos MIN for multiple outlet. Performance evaluation of these proposed MINs was calculated arrival probability of packet through the MIN. In teh result, these proposed MINs with multiple outlet had higher throughput than existed MIN with single outlet. We know the fact that as the outlet of MIN increase, throughput of MIN increase.

Crosslinked anion exchange membranes with primary diamine-based crosslinkers for vanadium redox flow battery application

Cha, Min Suc,Jeong, Hwan Yeop,Shin, Hee Young,Hong, Soo Hyun,Kim, Tae-Ho,Oh, Seong-Geun,Lee, Jang Yong,Hong, Young Taik Elsevier 2017 Journal of Power Sources Vol.363 No.-

<P><B>Abstract</B></P> <P>A series of polysulfone-based crosslinked anion exchange membranes (AEMs) with primary diamine-based crosslinkers has been prepared via simple a crosslinking process as low-cost and durable membranes for vanadium redox flow batteries (VRFBs). Chloromethylated polysulfone is used as a precursor polymer for crosslinked AEMs (CAPSU-x) with different degrees of crosslinking. Among the developed AEMs, CAPSU-2.5 shows outstanding dimensional stability and anion (Cl<SUP>−</SUP>, SO<SUB>4</SUB> <SUP>2−</SUP>, and OH<SUP>−</SUP>) conductivity. Moreover, CAPSU-2.5 exhibits much lower vanadium ion permeability (2.72 × 10<SUP>−8</SUP> cm<SUP>2</SUP> min<SUP>−1</SUP>) than Nafion 115 (2.88 × 10<SUP>−6</SUP> cm<SUP>2</SUP> min<SUP>−1</SUP>), which results in an excellent coulombic efficiency of 100%. The chemical and operational stabilities of the membranes have been investigated via ex situ soaking tests in 0.1 M VO<SUB>2</SUB> <SUP>+</SUP> solution and in situ operation tests for 100 cycles, respectively. The excellent chemical, physical, and electrochemical properties of the CAPSU-2.5 membrane make it suitable for use in VRFBs.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The crosslinking between polymer chains are constructed by 4,4′-diaminobenzophenone. </LI> <LI> The crosslinked AEMs were fabricated by commercial polysulfone (PSU; Udel<SUP>®</SUP> P-3500). </LI> <LI> The crosslinked AEM based on PSU indicated good chemical and dimensional stability. </LI> <LI> The performance of crosslinked AEM showed high EE (86%) with high capacity retention. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

COPA(cuffed oropharyngeal airway)를 이용한 마취 유도 시 근이완제 사용 유무에 따른 반응

김상태,배진호,김상범,임승운,민병상,신영덕 대한마취과학회 2000 Korean Journal of Anesthesiology Vol.38 No.3

Background : COPA (cuffed oropharyngeal airway) is a convenient device for airway management in patients undergoing general anesthesia for elective surgery in supine position. It causes less pharyngeal trauma than LMA(Laryngeal mask airway). The purpose of this study was to compare the effect of COPA with and without muscle relaxant. Methods : Forty patients with ASA physical status I and II for elective surgery were randomly assigned to two groups. Anaesthesia was induced with propofol (2 mg/kg) and vecuronium (1.5 mg/kg) and was administered intravenously in Group I but not in Group II. Mask ventilation was done for 5 min with 0: 5 L/min. COPA was placed and heart rate, and systolic, mean, diastolic blood pressure and peak inspiratory pressure were measured at 1 min interval for 5 min. Anaesthesia was maintained with pro- pofol 150 ㎍/kg/min, fentanyl 1 ㎍/kg/hr, O_2 2 L/min and N_2O 2 L/min. Results : There were no significant differences between Group I and Group II in heart rate, systolic, mean and dstolic blood pressure. PIP (Peak inspiratory pressure) was increased and hiccups occurred significantly (p $lt; 0.05) in Group II. Complete airway obstruction occurred in one patient of Group I and severe coughing, body movements and gagging occurred during induction and insertion in Group II. conclusions : With the use of appropriate muscle relaxant, we can use COPA without increased inspiratory pressure or significant complication. (Korean J Anesthesiol 2000; 38: 399~403)

가자의 즉각형 알레르기 반응 억제 효과

엄용대,신민교,이영미,김형민,신태용,정종길,송호준 대한본초학회 2000 大韓本草學會誌 Vol.15 No.1

We investigated the effects of methanol extract of Fructus Chebula (MEFC) on local and systemic anaphylaxis. Passive cutaneous anaphylaxis inhibited to 61.42 12.8 % by oral administration of MEFC(I.0 glkg). MEFC inhibited compound 48/80-induced anaphylactic shock 100% with doses of 0.05-1.0 glkg . Administrations of MEFC (1.0 glkg) 60 min before, 5 min after, and 10 min after the compound 48/80 treatment were shown the mortality rates as 0%. MEFC (0.01-1.0 glkg) inhibited the histamine release significantly from the rat peritoneal mast cells by compound 48/80. These results indicate that MEFC inhibits mast cell mediated anaphylactic reactions by inhibition of mast cell degranulation in vivo and in vitro.

유제놀에 의한 즉시형 알레르기 반응의 억제

김상현,신태용,김형룡,이영미,이은희,신보경,김윤철,안년형,김형민 우석대학교 의약품개발연구소 1996 藥學硏究誌 Vol.1 No.-

The current study evaluates the capacity of eugenol to regulate immediate allergic reaction by control of histamine release. Administrations of eugenol (1 M/kg. i.p.) at 60 min before and 5.10 min after the compound 48/80 treatment (8 mg/kg.i.p.) were shown the mortality rates as 0.44.4. and 77.8%. respectively. A 60 min before administered group revealed a singificant inhibition of serum his-tamine release compared with those of 5 and 10 min after the compound 48/80 injection. Eugenol (6-48mM) was also showed a dose-dependent activity on the compound 48/80-induced histamine release from the highly purified population of Alcian Blue-positive peritoneal mast cells. These results indicate that in vitro treatment with exogenous eugenol inhibited the active response of mast cell populations and modulated its characteristics.

허혈성 심질환에 있어서 아데노신 급속 정맥투여후 관동맥압의 변화에 관한 연구

봉종대,오종용,배성한,신원용,김철현,이광희,최태명,현민수,김성구,권영주 순천향의학연구소 1998 Journal of Soonchunhyang Medical Science Vol.4 No.2

Background: Adenosine interacts with A1 receptors present on the extracellular surface of cardiac cells, activating K+channels in a fashion. It produces coronary vasodilatation and AV nodal block. The half-time is one to six second and has ultra-short action. In ischemic heart disease, fractional flow reserve(FFR) can be achieved safely with intravenous adenosine infusions at a rate of 150㎍/kg/min which cause maximal coronary hyperemia. Purpose: We investigated the patients who have had ischemic heart disease(n=8). After adenosine intravenous administration(150㎍/kg/min), the effect cause maximal hyperemia of coronary artery. During peak maximal hyperemia, we reported clinical findings, coronary hemodynamics and electrocardiogram findings. Methods: After diagnostic coronary angiography and left ventriculography, catheter was advanced into the ostium of coronary artery. We investigated coronary hemodynamics such as systolic coronary artery pressure, diastolic coronary artery pressure, mean coronary artery pressure and heart rate. To assess the use of adenosine for determination of fractional flow reserve, hemodynamics and electrocardiogram were measured at basal state and during peak maximal hyperemia. Results: Symptoms developed 1.5-2 minute after adenosine intravenous administration and each symptom disappeared 2-2.5 minute after adenosine administration. Two patients represented asymptomatic appearance and six patients complained of flushing, chest pain, palpitation and headache. In eight patients with ischemic heart disease, 1.5 minute after venous administration of 150㎍/kg/min of adenosine, coronary artery pressure decreased and heart rate increased significantly. Conduction abnormalities after administration of 150㎍/kg/min of adenosine were transient 2nd degree AV block 2 cases(25%). Conclusions: Adenosine is a potent ultra short-acting vasodilator. Although coronary artery pressure decreased and heart rate increased and mild cardiovascular symptoms occurred after continuous infusion of 150㎍/kg/min of adenosine, it is useful as an agent for determination of fractional flow reserve.

Cutting performance of tungsten carbide tools coated with diamond thin films after etching for various times

Kim, Jong Seok,Park, Yeong Min,Bae, Mun Ki,Kim, Chi Whan,Kim, Dae Weon,Shin, Dong Chul,Kim, Tae Gyu World Scientific Publishing Company 2018 Modern physics letters. B, Condensed matter physic Vol.32 No.20

<P>In this study, diamond thin films were deposited on tungsten carbide tools using surface-wave plasma-enhanced chemical vapor deposition (SWP-CVD). To eliminate the adverse effects of cobalt on the diamond deposition process, the cobalt was removed from the surface of the tools by etching with Murakami’s reagent for various times (30, 60, and 120 min). The cutting performance of the untreated and the diamond-coated WC tools was examined by performing cutting test on carbon fiber-reinforced plastic (CFRP). The results showed that all the diamond-coated tools exhibited great improvement on the durability and wear resistance compared to the uncoated one. In addition, the diamond-coated tool lift time is found to be proportional to the etching time. An increase more than twofold has been achieved when the etch time was increased from 30 min to 120 min.</P>

정향 수침액에 의한 아나필락시의 억제 효과

신태용,김상현,이석봉,엄동옥,임종필,이은희,김형민 우석대학교 의약품개발연구소 1996 藥學硏究誌 Vol.1 No.-

The current study evaluates the capacity of Caryophylli Flos water extract(CFWE) to regulate immediate allergic reaction by control of histamine release. CFWE was found to exhibit a ingibitory activity on the compound 48/80-induced anaphylaxis. CFWE inhibited the serum histamine release induced in anaphylaxis by compound 48/80. CFWE was also showed a dose-depent activity on the conpound 40/80-induced histamine release from the highly purified population of Alcian Blue-positive peritoneal mast cells. This result suggest that CFWE may be useful for the prevention and treatment of allergy related disease.

시험불안과 정신병리, 기질 그리고 가정환경 간의 구조적 관계에 관한 연구 : 시험불안-우울-불안-자기개념-가정환경간의 인과적 관계분석

신민섭,조수철,유태익 대한소아ㆍ청소년정신의학회 1999 소아청소년정신의학 Vol.10 No.1

한국인 정신분열병 환자의 HLA-DQA1,HLA-DQB1 HLA-DRB1 대립유전자 빈도

신규성,이민수,김영리,김영태,조윤정 대한신경정신의학회 2000 신경정신의학 Vol.39 No.4

연구목적: 저자들은 PCR-SSOP 방법으로 한국인 정신분열병 환자에서 HLA-DQA1, HLA-DQB1 및 HLA- DRB1과 정신분열병의 감수성과의 상관성을 밝히고자 하였다. 방법: DSM-IV 에 의거하여 정신분열병으로 진단된 환자군 128명과 정상대조군 160명에 대해 polymerase chain reaction-sequence specifc oligonucleotide probes(PCR-SSOP) 방법을 이용하여 HLA-DQA1, HLA-DQB1, HLA-DRB1 대립유전자의 빈도를 분석하였다. 결과: HLA-DQB1□04는 환자군에서 14.6%로 정상대조군의 8.2%보다 높은 빈도를 보였고 (p=0.028), HLA-DRB1□14는 환자군에서 11.8%로 정상대조군으 5.5%보다 높았으며 (p=0.01), HLA-DRB□15는 환자군에서 2.0%로 정상대조군의 7.1%보다 낮은 빈도를 보였고(p=0.007), HLA-DRB□16은 환자군에서 1.6%로 정상대조군의 4.8%에 비해 유의하게 낮았다(p=0.043). 결론: 한국인 정신분열병 환자에서 HLA-DQB1□04와 HLA-DRB1□14S는 질병 발생의 감수성 인자로 작용을 하고, HLA-DRB1□15와 HLA-DRB1□16은 방어적인 역할을 할 수 있다고 할 수 있으나, 다른 인종에 관한 외국의 연구자들의 결과와는 상이한 양상을 보였다. Objectives: The aim of this study was to investigate the correlation between HLA-DQA1,HLA-DQB1 and HLA-DRB! alleles and disease susceptibility in Korean schizophrenic patients. Methods: HLA-DQA1, HLA-DQB1, and HLA-DRB! allele typing were performed using polymerase chain reaction-sequence specific oligonucleotide probes(PCR-SSOP) method in 128 Korean schizophrenic patients diagnosed by DSM-IV criteria, who were not blood-related, and 160 normal blood bank donors. Results: The HLA-DQB1□04 allele frequency was 14.6% in schizophrenic patients, which was significantly higher than that of normal controls which was 8.2%(p=0.028). HLA-DRB1□14 allele frequency was 11.8% in patients, which was also more frequent than that of normal controls which was 5.5%(p=0.01). HLA-DRB1□15 allele frequency was 2.0% in patients, which was significantly lower than that of normal controls which was 7.1%(p=0.007) and HLA-DRB1□16 allele frequency was 1.6% in patients, which was also lower than that of normal controls which was 4.8%(p=0.043). Conclusion: Schizophrenia in Korea had positive correlation with HLA-DQB1□04 and HLA-DRB1□14, and negative correlation with HLA-DRB1□15 and HLA-DRB1□16. These findings support the association of the HLA-DQB1 and HLA-DRB1 with schizophrenia in Korean population, which was different from other study results in other different ethnic groups.