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고전압 비휘발성 메모리 Programming Pin ESD 개선방안에 관한 연구
권순엽(Soon-Yeob Kwon),임경식(Kyoung-Sik Im),고재혁(Jae-Hyok Ko),정신영(Shin-Young Chung),김요정(Yo-Joung Kim),박무근(Moo-Keun Park),이경진(Kyoung-Jin Lee),공배선(Bai-Sun Kong) 대한전자공학회 2006 대한전자공학회 학술대회 Vol.2006 No.11
Ths paper presents a method of improving the ESD characteristic of high voltage non-volatile memory (NVM) programming pin in a 130㎚/30V technology. Suggested scheme can provide not only a major current discharge path to protect the internal circuit from ESD damage but also a voltage clamping function to prevent the soft error of programmed data during an ESD event. Resistance value of 120 ㏀ and capacitance value of 6.8㎊ were chosen for maximizing the improvement of voltage characteristic and delay time, while minimizing the area overhead. The proposed scheme has been validated by TCAD simulation and actuality silicone.
심근관류 스캔중에 나타난 Thallium - 201의 심장외 국소적 섭취
이규보(Kyu Bo Lee),이재태(Jae Tae Lee),정병천(Byung Cheon Chung),최정일(Chung Il Choi),곽동석(Dong Suk Kwak),박무근(Moo Keun Park) 대한핵의학회 1992 핵의학 분자영상 Vol.26 No.1
N/A Myocardial perfusion imaging with 201T1-chloride following exercise or vasodilator-induced hyperemia has been effective in detecting the presence of coronary artery disease. An increased lung uptake of thallium has been reported as a sensitive marker of severe and extensive coronary artery disease and associated with poor prognosis. Thallium has also been noted to concentrate in a variety of malignant lesions. We report 5 cases of extracardiac uptake of thallium during myocardial perfusion scan with pharmacologic vasodilation. Accumulation of thallium was found in the lesions of a breast cancer, a lung cancer, a Castleman's disease and 2 cases of thymoma. We believe that the presence of focal extracardiac uptake of thallium during myocardial perfusion scan should suggest the need for further clinical evaluation to detect the tumor and must differentiate the increased lung uptake of thallium due to left ventricular dysfunction in coronary artery disease.