A New Sesame Variety, “Kangbaek” with Disease Resistance, Lodging Tolerence and High Yield

Kang-Bo Shim,Churl-Whan Kang,Suk-Bok Pae,Si-Kyu Lim,Yu-Young Lee,Duck-Yong Suh,Jae-Whan Rho,Jin Song,Dong-Whi Kim,Ho-Young Kim 한국육종학회 2005 한국육종학회지 Vol.37 No.5

A new sesame variety Kangbaek was developed from Yeongnam Agricultural Research Institute in 2004. Cros wasmade by lodging resistant SP9003-3 line to the F1with high yielding capacity, folowed by pedigree selection, yield test and RYT by the sesame breeding team at the National Insti-tute of Crop Science up to 2003. The variety showed higher disease resistance, especially phytophothra disease, and lodging resis-respectively. It's 1000 grains weight was about 2.54 g indicating 0.03 g heavier than that of Yangbaekkae, and it's oil content wasabout 52%. Kangbaek also contained total 7.65mg/g of such lignans as sesamin and sesamolin. The average yield of Kang-baek was 82 kg per 10a at the national-wide regional performance.

복합 관동맥병변에서의 Rotational Atherectomy : 초기결과

김진우,박성욱,홍명기,이상곤,이일수,이철환,최기준,강덕현,송재관,김재중,박승정 대한순환기학회 1997 Korean Circulation Journal Vol.27 No.9

교정용 브라켓과 호선 간의 마찰 저항력의 비교

서충환,정혜승,조진형,강경화 대한치과교정학회 2005 대한치과교정학회지 Vol.35 No.2

본 연구는 고정성 장치를 이용한 교정 치료에서 브라켓과 교정용 호선 사이의 활주 이동 동안 발생하는 마찰력에 디자인과 재질이 다른 각각의 브라켓과 여러 종류의 호선, 다양한 브라켓-호선 각도 등이 어떤 영향을 미치는가를 알아보기 위하여 4종의 브라켓(stainless steel twin 브라켓인 Gemini^(?), 좁은 근원심 폭경과 single bracket의 디자인이 포함된 Mini Uni-Twin^(?), metal-reinforced 세라믹 브라켓인 Clarity^(?), 세라믹 브라켓인 Transcend^(?)을 사용하고, 3종의 교정용 호선(0.016˝. 0.016×0.022˝ stainless steel호선, 0.016˝Nitinol)을 이용하여 브라켓-호선 각도를 0˚, 3˚, 9˚로 조절하면서 실험한 결과, Gemini^(?)는 유의하게 가장 낮은 정지, 운동 마찰력을 보였으며(P<0.001), Clarty^(?)는 0˚의 브라켓-호선 각도에, Transcend^(?)는 6˚와 9˚의 각도에서 유의하게 가장높은 정지, 운동 마찰력을 보였고(P<0.001), 0.016×0.022˝ stainless steel 각형 호선은 유의하게 가장 높은 정지, 운동 마찰력을 보였으며(P<0.01),0.016˝ stainless steel 원형호선은 0˚와3˚의 브라켓-호선 각도에서(P<0.01), 0.016˝ Nitinol은 6˚와9˚의 각도에서 (P<0.001)유의하게 가장 낮은 정지, 운동마찰력을 보였고 브라켓-호선 각도가 증가함에 따라 유의하게 정지, 운동마찰력도 증가 하였다(P<0.001) The object of this study was to evaluate how friction that occurs during the sliding movement of an orthodontic archwire through orthodontic brackets is differently affected by variant designs and ingredients of brackets and archwires and bracket-archwire angles. In order to simulate the situations which could occur during orthodontic treatment with fixed appliances, 4 types of brackets(Gemini^(?), a stainless steel twin bracket:Mini Uni-Twin^(?), a stainless steel bracket with a single bracket design and narrow mesio-distal width: Clarity^(?), a metal-reinforced cermic braket: T ranscend^(?), a ceramic bracket)and 3 types of orthodontic archwires (0.016˝, 0.016×0.022 stainless steel, 0.016˝ Nitinol)were used and the bracket-archwire angles were controlled as 0˚,3˚,6˚, and 9˚, Gemini^(?) significantly showed the lowest static and kinetic frictions (P<0.001). Clarity showed the highest static and kinetic frictions with a bracket-archwire angle of 0˚, and Transcend at 6˚ and 9˚(P<0.001). An 0.016×0.022˝ stainless steel rectangylar archwire significantly showed the highest static and kinetic frictions(P<0.01). The lowest static and kinetic frictions were observed when the bracket-archwire angles were 0˚ and 3˚ with 0.016˝ stainless steel round archwires(P<0.01), and 6˚ and 9˚ with 0.016 Nitinol(P<0.001). The static and kinetic frictions were increased as the bracket-archwire angles were increased(P<0.001).

좌심실내 혈류 전파 속도에 관한 연구

최시완,정진옥,강승식,성인환,박종훈 충남대학교 의과대학 지역사회의학연구소 1995 충남의대잡지 Vol.22 No.1

Background : Noninvasive attemps to identify left ventricular relaxation have been hampered because relaxation rate, left atrial filling pressure, and chamber compliance are the major determinants of peak early velocity and filling rate. This study was perfomed to evaluate the relation between the velocity of flow propagation and left ventricular relaxation by using pulsed doppler echocardiography to analize flow propagation in the left ventricle. Method : By using pulsed Doppler echocardiography, the velocity of left ventricular flow propagation was measured from the distance and time difference of flow wave along the long axis propagation of left ventricular inflow during early filling in normal subjects (n=30), and M-mode echocardiographic data were obtained to evaluate mitral annulus long axis movement (mitral annulus relaxation rate) which represents left ventricular relaxation. Results : the peak early velocity was not related to mitral annulus relaxation rate, but, the velocity of flow propagation was related to mitral annulus relaxarate (P<0.005) in normal subjects. Conclusion : the velocity of flow propagation during early filling seems to be highly dependent on the mitral annulus relaxation rate and could be an important noninvasive tool in studying diastolic function.

골수구성 백혈병 환자에게 발생한 결핵성 림프절염

이창섭,송진수,최평균,조재현,방지환,박경화,박완범,김홍빈,김남중,윤성수,박선양,김병국,오명돈,최강원 대한감염학회 2006 감염과 화학요법 Vol.38 No.5

혈액질환 가운데 결핵 발생이 증가한다고 알려진 것은 호지킨 림프종을 포함한 림프증식성질환 그리고 모양세포성 백혈병 등이 있다. 또한 동종 골수이식을 받은 환자에서도 결핵은 증가한다고 알려져있다. Kaplan 등은 골수구성 백혈병 환자에서 결핵 발생이 증가한다고 보고하였다. 그러나 골수구성 백혈병 환자에서 결핵의 발생이 증가하는 이유에 대해서는 아직까지 정확하게 밝혀지지 않았다. 저자들이 2년 동안 후향적으로 조사한 180명의 성인 골수구성 백혈병 환자들 가운데 결핵이 발생한 환자는 4명이었고, 발생 부위는 모두 림프절이었다. 결핵은 골수구성 백혈병의 특정 아형에만 국한되어 발생하지 않았지만, 50%에서 FAB 분류에 의한 M4였다. 림프절이 종대된 골수구성 백혈병 환자에서 특히, 결핵의 유병율이 높은 나라에서는 결핵성 림프절염도 감별진단에 포함시켜야 한다. During the neutropenic phase, leukemia patients receiving chemotherapy are prone to bacterial and, fungal infections; occasionally mycobacterial, viral and protozoal organisms may also cause infections. Mycobacterium tuberculosis infection was reported very rarely in these patients. This report describes four patients with M. tuberculosis infection identified from 185 adult patients who were diagnosed myelogenous leukemia between January 2003, and December 2004. There was no patient with M. tuberculosis infection from 44 lymphoid leukemia and 11 acute biphenotypic leukemia patients. Sites of infection were all lymph nodes. Three among four patients were presented with lymphadenopathy at initial diagnosis of leukemia, and the other one presented with lymphadenopathy after induction chemotherapy. There was no patient presented with lymphadenopathy during the neutropenic phase. Tuberculous lymphadenitis was presented in a patient with three acute myelogenous leukemia (FAB class 2 M4, 1 M2) and a chronic myelogenous leukemia, accelerated phase. An acute myelogenous leukemia patient had a leukemic cell and tubercle bacilli in the same lymph node. Tuberculosis should also be included as a differential diagnosis in myelogenous leukemia patient with lymphadenopathy, especially in the countries in which the disease is endemic.

혈액 투석 환자에서 중심정맥 협착에 대한 스텐트 삽입술 : Wallstent Placement

임대승,노상필,이유선,정승현,김보영,이정우,강정아,김정희,이민수,정준용,최시완,정진옥,성인환,이강욱,신영태 충남대학교 의과대학 의학연구소 2002 충남의대잡지 Vol.29 No.1

Stenosis of central vein is a common complication arising after percutaneous subclavian vein catheter insertion performed for temporary vascular access in chronic renal failure patients undergoing hemodialysis. There are several treatment methods for the condition like percutaneous angioplasty(PTA), stent insertion, and surgery, but recent trend is toward PTA and stents. Among the patients diagnosed with chronic renal failure from March 1993 to May 2002 and undergoing hemodialysis through AV fistula, the 14 Patients in whom central vein stenosis arose were selected for the study. A total of 28 percutaneous interventions(5 PTA and 23 stent placement) were performed, and restenosis rate and the time taken till the restenosis in de novo lesions and instant lesions were compared. All 28 cases were operated successfully. The 14 cases that received both anigioplasty and stent placement initially. (de novo lesion : 14 cases), Among the 10 cases with de novo lesion that followed up more than 1 year, 3 cases are currently undergoing hemodialysis without restenosis, and the remaining 7 cases have recurred stenosis with the mean time to restenosis of 10.9 months. In the 7 cases in whom stenosis recurred, 11 interventions were done(instent lesion: 11 cases). 4 of these were using only ballon angioplasty with 100% restenosis rate and the mean time of 3 months until restenosis. The remaining 7 cases were using both balloon angioplasty and stent placement, also with 100% restenosis rate but with the mean time of 12 months until restenosis, which was later than the group receiving only balloon angioplasty. In treating the patients with central vein stenosis, stent placement seems to be more advantageous over PTA in terms of restenosis rate and the mean duration of patency. In the case of instent lesion, inserting the stent for the second time after stenosis recurred lengthened the duration of patency compared to performing balloon angioplasty alone.

Outage Analysis of Multi-Antenna Rate Adaptive Systems With Outdated Feedback

Jin Whan Kang,Min Jang,Sang-Hyo Kim,Dong In Kim IEEE 2014 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS Vol.13 No.10

<P>The effect of imperfect channel state information (CSI) on rate adaptation in time-varying multi-antenna fading channels is studied. In the presence of feedback delay and channel estimation error, we analyze the outage probability (OP), defined as the average probability that the achievable rate in the current channel state is lower than data rate scheduled based on outdated feedback, for maximum ratio combining receivers in single-input multiple-output channels and zero-forcing (ZF) receivers in multiple-input multiple-output (MIMO) channels. In particular, for temporally correlated MIMO channels, the conditional distribution of SNR at the output of ZF detection in the current channel state is unknown; hence we apply a Gaussian approximation to obtain a closed-form expression for the average OP of the MIMO-ZF receiver. Simulation results show that our derivations are well-matched to the actual OP and throughput of multi-antenna rate adaptive systems. Also, based on our analysis results, we propose a simple rate adaptation scheme that maximizes the average throughput under a target OP constraint. The proposed schemes optimize the scheduled rate according to a given CSI condition, and effectively maximize the average outage-constrained throughput.</P>

Validation of Intravascular Ultrasound-Derived Parameters With Fractional Flow Reserve for Assessment of Coronary Stenosis Severity

Kang, Soo-Jin,Lee, Jong-Young,Ahn, Jung-Min,Mintz, Gary S.,Kim, Won-Jang,Park, Duk-Woo,Yun, Sung-Cheol,Lee, Seung-Whan,Kim, Young-Hak,Whan Lee, Cheol,Park, Seong-Wook,Park, Seung-Jung Ovid Technologies Wolters Kluwer -American Heart A 2011 Circulation. Cardiovascular interventions Vol.4 No.1

The Effects of Frequency Offset and Timing Jitter on the Performance of CSS System

Jin Whan Kang,Sang-Hyo Kim,Seokho Yoon 대한전자공학회 2008 ITC-CSCC :International Technical Conference on Ci Vol.2008 No.7

Chirp spread spectrum (CSS) is a wideband modulation technique employing linear frequency sweep. We analyze the effects of frequency offset and timing jitter on the performance of CSS system. The exact bit error rate (BER) expressions of CSS system are derived in the presence of frequency offset and timing jitter. It is shown that analytical and experimental results match exactly and the frequency offset and the timing jitter degrade the CSS performance. In addition, we suggest tolerance criterion of the frequency offset and the timing jitter for reliable CSS based communication systems using simulation results.

Optical Coherence Tomographic Analysis of In-Stent Neoatherosclerosis After Drug-Eluting Stent Implantation

Kang, Soo-Jin,Mintz, Gary S.,Akasaka, Takashi,Park, Duk-Woo,Lee, Jong-Young,Kim, Won-Jang,Lee, Seung-Whan,Kim, Young-Hak,Whan Lee, Cheol,Park, Seong-Wook,Park, Seung-Jung Ovid Technologies Wolters Kluwer -American Heart A 2011 CIRCULATION - Vol.123 No.25

<P>We report findings from optical coherence tomography (OCT) of in-stent neoatherosclerosis as a cause of drug-eluting stent (DES) failure.</P>