http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Integration of a Passive-Type UHF RFID Tag Using Ferroelectric Memory Technology
Hae-Chan Park,Suk-Kyoung Hong,Ae-Kyoung Lee,Baek-Hee Lee,Hee-Bok Kang,Heon-Yong Chang,Ji-Hye Choi,Nam-Kyun Park,Sanghyun Park,Sung Joo Hong,Sung-Sil Cho,Sung-Yeon Hwang,Yoon-Jung Kim,Young-Jin Son 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.51 No.2I
We investigated a passive-type rewritable radio-frequency identification (RFID) tag operating at the UHF (860 . 960 MHz) band and using ferroelectric memory (FeRAM) technology. The transponder integrated circuit(IC) for the UHF RFID tag was implemented with 0.25-μm one-poly four-metal standard logic CMOS technology with the addition of a FeRAM and Schottky diodes. The Pb(Zr,Ti)O3(PZT) capacitor array with a unit area of 1.4 × 1.4 μm2 for the FeRAM-embedded RFID tag showed a remnant polarization of 30 μC/cm2 and a leakage current of 1 × 10.5 A/cm2 at 3 V after full process integration. The novel ferroelectric technology utilizing a stacked capacitor structure and a high capacitance PZT capacitor allowed a highly competitive transponder chip size (550 × 550 μm2) by reducing the area of the analogue circuit without adding any complexity to the process integration. The PZT capacitor-based analogue circuitry showed almost the same performance as that of conventional capacitor type circuitry. Thus, the ferroelectric memory technology is very promising for the realization of a cost-effective, passive-type, rewritable UHF RFID tag.
The Korean Hypertension Cohort study: design and baseline characteristics
( Hae-Young Lee ),( Ju-Yeon Lee ),( Ho-Gyun Shin ),( Song-Hee Cho ),( Kyun-Ik Park ),( Gyu-Chul Oh ),( Seung-Pyo Lee ),( Hogon Kim ),( Hee-Sun Lee ),( Kwang-Il Kim ),( Si-Hyuck Kang ),( Jang Hoon Lee 대한내과학회 2021 The Korean Journal of Internal Medicine Vol.36 No.5
Background/Aims: Hypertension (HT) has a significant impact on public health and medical expenses. However, HT is a chronic disease that requires the long-term follow-up of a large number of patients. Methods: The Korean Hypertension Cohort (KHC) study aimed to develop a model for calculating cardiovascular risk in HT patients by linking and utilizing the detailed clinical and longitudinal data from hospitals and the national health insurance claim database, respectively. This cohort had a planned sample size of over 11,000 HT patients and 100,000 non-HT controls. Eligible patients were hypertensive patients, who were presenting for the first time and were diagnosed with HT as a main disease from 2006 to 2011. Long-term survival data over a period of approximately 9 years were obtained from the national health insurance claim and national health examination data. Results: This cohort enrolled 11,083 patients with HT. The mean age was 58.87 ± 11.5 years, 50.5% were male, and 31.4% were never-treated HT. Of the enrolled patients, 32.9% and 37.7% belonged to the high and moderate cardio-vascular risk groups, respectively. Initial blood pressures were 149.4 ± 18.5/88.5 ± 12.5 mmHg. During the 2 years hospital data follow-up period, blood pressures lowered to 130.8 ± 14.1/78.0 ± 9.7 mmHg with 1.9 ± 1.0 tablet doses of antihypertensive medication. Cardiovascular events occurred in 7.5% of the overall patients; 8.5%, 8.8%, and 4.7% in the high, moderate, and low risk patients, respectively. Conclusions: The KHC study has provided important information on the long-term outcomes of HT patients according to the blood pressure, comorbid diseases, medication, and adherence, as well as health behaviors and health resource use.
Overexpression of KAI1 Protein in Diabetic Skin Tissues
Cho, Moon Kyun,Kwon, Sun Bum,Kim, Chul Han,Lee, Yoon-Jin,Nam, Hae-Seon,Lee, Sang-Han Korean Society of Plastic and Reconstructive Surge 2014 Archives of Plastic Surgery Vol.41 No.3
Background Patients with diabetes mellitus often have a difficult life, suffering from foot ulceration or amputation. Diabetes is characterized by chronic inflammation, and one of the features of inflammation is hypoxia. Recently, it has been reported that KAI1 is a hypoxia target gene. There is no published research on hypoxia-related KAI1 protein levels in human diabetic skin. Therefore, we have investigated the expression of KAI1 protein in diabetic skin tissue in vivo. Methods The expression of KAI1 protein was evaluated by western blotting in 6 diabetic skin tissue samples and 6 normal skin samples. Immunohistochemical staining was carried out to identify KAI1 expression. Results The western blotting revealed significantly increased expression of the KAI1 protein in diabetic skin tissues as compared to normal skin tissues. Immunohistochemical examination demonstrated that KAI1 was expressed in all diabetic skin tissues with moderate-to-strong positivity and weakly expressed in normal skin tissues. Conclusions Our data suggest that a high expression of the KAI1 protein can be observed in diabetic skin tissue. To the best of our knowledge, this is the first report suggesting that KAI1 protein expression in diabetic skin tissues may be associated with chronic inflammatory states and hypoxia.
Thalamic Deep Brain Stimulation for Writer's Cramp
Cho, Chul-Bum,Park, Hae-Kwan,Lee, Kyung-Jin,Rha, Hyoung-Kyun The Korean Neurosurgical Society 2009 Journal of Korean neurosurgical society Vol.46 No.1
Writer's cramp is a type of idiopathic focal hand dystonia characterized by muscle cramps that accompany execution of the writing task specifically. There has been renewed interest in neurosurgical procedures for the treatment of dystonia over the past several years. In particular, deep brain stimulation (DBS) has received increasing attention as a therapeutic option for patients with dystonia. However, to date, limited reporters made investigations into DBS in relation to the Writer's cramp. In this case, unilateral Ventro-oralis complex (Vo) DBS resulted in a major improvement in patient's focal dystonic movement disorders. Her post-operative Burke-Fahn-Marsden Dystonia Rating (BFMDR) scale demonstrated 1 compared with pre-operative BFMDR scale 4. We conclude that thalamic Vo complex DBS maybe an important neurosurgical therapeutic option for Writer's cramp.
Stereotactic Radiosurgery with the CyberKnife for Pituitary Adenomas
Cho, Chul-Bum,Park, Hae-Kwan,Joo, Won-Il,Chough, Chung-Kee,Lee, Kyung-Jin,Rha, Hyoung-Kyun The Korean Neurosurgical Society 2009 Journal of Korean neurosurgical society Vol.45 No.3
Objective : In recent years, CyberKnife has emerged as an important treatment modality in the management of pituitary adenomas. Treatment results after performing CyberKnife and the complications of this procedure are reviewed. Methods : Twenty-six patients with pituitary adenomas received stereotactic radiosurgery with the CyberKnife (CKRS). The follow-up periods ranged from 7 months to 47 months (mean$\pm$SD : $30{\pm}12.7$ months). The patients consisted of 17 with non-functioning adenomas, 3 with prolactinomas and 6 with acromegaly. The change in the tumor volume, visual acuity, hormonal function, and complications by this therapy were analyzed in each case. Results : The tumor control rate was 92.3%. Hormonal function was improved in all of the 9 (100%) functioning adenomas. Hormonal normalization was observed in 4 of the 9 (44%) patients with a mean duration of 16 months. In two patients (7.6%), visual acuity worsened due to cystic enlargement of the tumor after CKRS. No other complications were observed. Conclusion : CyberKnife is considered safe and effective in selected patients with pituitary adenomas. However, longer follow-up is required for a more complete assessment of late toxicity and treatment efficacy.
Axial Neck Pain after Cervical Laminoplasty
Cho, Chul-Bum,Chough, Chung-Kee,Oh, Jong-Yang,Park, Hae-Kwan,Lee, Kyung-Jin,Rha, Hyoung-Kyun The Korean Neurosurgical Society 2010 Journal of Korean neurosurgical society Vol.47 No.2
Objective : It has been demonstrated that cervical laminoplasty is an effective and safe method of treating multi-level cervical spondylotic myelopathy and ossification of the posterior longitudinal ligament. However, recent reports have suggested that axial neck pain is frequently encountered after cervical laminoplasty. The aim of the present study was to determine clinical significance of the C7 spinous process on axial neck pain after cervical laminoplasty. Methods : A total of 31 consecutive patients that underwent cervical laminoplasty between March 2002 and December 2008 were reviewed. The authors evaluated and compared axial neck pain and lordotic angle in patients that underwent C7 spinous process preserving surgery (group 1, n=16) and in patients in which the C7 spinous process was sacrificed (group 2, n=15). Results : Severe or moderate early axial pain occurred in 56.2% of patients in group 1 and in 86.6% in group 2. Severe or moderate late axial pain occurred in 12.5% in group 1 and in 73.3% in group 2. Eighty-Six percent of patients in group 2 and 43% in group 1 experienced aggravation of their axial neck pain during the early postoperative period. Aggravation of axial neck pain during early postoperative period was less common in group 1 but not statistically significant (p=0.073). Sixty-six percent of patients in group 2 and 12% in group 1 had aggravated axial neck pain at late postoperative period and aggravation of late axial neck pain was significantly less common in group 1 (p=0.002). Conclusion : The present study demonstrates that C7 spinous process preserving laminoplasty decreases the incidence of aggravated axial neck pain after cervical laminoplasty.
Hae Lim Baek,Yong Kyun Cho,Mi-Seung Shin,Song Mi Moon,Suyoung Kim,Kang-lock Lee,Young Rock Jang,Woo Suk Choi 중앙대학교 의과대학 의과학연구소 2013 中央醫大誌 Vol.38 No.4
Infective endocarditis caused by Aggregatibacter aphrophilus, which is one of the members of HACEK group, is rare and mitral valve is known as a prominently affected site in most cases. We report a case of isolated pulmonary valve infective endocarditis caused by A. aphrophilus in a patient with congenital heart disease. Twenty five-year-old woman with ventricular septal defect visited our hospital complaining fever lasting 3 weeks. Not any vegetation was observed at transthoracic echocardiography due to limited echo window. However, transesophageal echocardiography showed a small vegetation attached to the pulmonary valve. The patient was successfully treated with ceftriaxone for 4 weeks.