http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
집적화된 실리콘 압력센서의 출력전압 보상파라미터 추출 및 그 특성
이보나,김건년,박효덕,신상모,이경탁,김찬,권혁채,이상조,박현주 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1
An integrated silicon pressure sensor has been designed, fabricated and tested. The signal conditioning circuits were designed to include calibration and temperature compensation of output voltage through trimming of diffusion and ion-implanted resistors. Before trimming of resistors, the compensation parameters such as pressure sensitivity, temperature coefficient of pressure sensitivity, temperature coefficient of piezoresistors and pressure sensitivity of piezoresistors were measured. Then offset voltage, span, and temperature coefficients of offset voltage and span were calibrated by trimming of resistors. The measured output voltage met our design specification and simulation value above room temperature. But, the measured output voltage at -30°C deviated from our design specification and simulation value because the offset voltages were found to vary randomly as a function of temperature.
류재호,노규태,이영석,이영호,권혁찬,김재석,김효진,이영민,박혜원,박근희 대한조혈모세포이식학회 2002 대한조혈모세포이식학회지 Vol.7 No.1
연구배경: 동일한 환자를 대상으로 조혈모세포이식 전 일반 병실에서의 관해유도 항암제치료 및 강화요법으로 인한 호중구감소 기간의 감염양상과 고용량 항암제치료 후 무균실에서의 조혈모세포이식 시 호중구감소 기간의 감염양상을 중심정맥관 관련 패혈증을 중심으로 비교 연구함으로써 효율적인 감염관리지침을 마련하고자 하였다. 대상 및 방법: 1999년 1월부터 2001년 7월까지 2년 7개월간 동아대학교병원 일반병실에서 악성혈액질환으로 항암제 치료를 받다가 조혈모세포이식을 시행받았던 22명을 대상으로 중심정맥관 관련 패혈증의 형태를 비교분석하였다. 결과: 대상 환자들의 일반병실과 무균실에서의 입원기간은 각각 32±13일, 33±19일, 호중구 감소기간은 15±12일, 17±18일, 호중구 감소기간의 발열 횟수는 14회, 14회로서 입원병실의 종류에 따른 차이는 없었다. 환자들의 중심정맥관 사용일수는 일반병실에서 29일(7~545일), 무균실에서 100.5일(25~606일)이었으며, 총 사용일수는 각각 1,515일, 3,250일로서 무균실에서의 중심정맥관 사용일수가 의미 있게 길었다(P=0.001). 중심정맥관 사용 일수에 대한 감염률은 각각 5.28/1,000일, 3.08/1,000일로서 일반병실에서 그 빈도가 높았으나 통계적 유의성은 보이지 않았다(P=0.141). 결론: 중심정맥관 삽입 후 일반병실에서 항암제 치료를 받던 환자가 조혈모세포이식을 위하여 무균실에 입원하는 경우, 중심정맥관을 교체하는 것이 감염관리를 위하여 바람직할 것으로 생각된다. Background: We compared the incidence of central venous catheter (CVC) related septicemia during neutropenic period in the same patient, which developed following chemotherapy for remission induction and consolidation, or hematopoietic stem cell transplantation (HSCT). Methods: We retrospectively reviewed the medical records and laboratory data of 22 patients with hematologic malignancies who received anticancer chemotherapy followed by HSCT at Dong-A University Hospital between January, 1999 and July, 2001. We investigated the duration of hospitalization, duration of neutropenic period, duration of catheterization, microbiologically documented organisms and incidence of CVC related septicemia. Results: The data in general ward (before HSCT) and laminar air flow room (after HSCT) were as follows: duration of hospitalization was 32±13 days and 33±19 days, duration of neutropenic period was 15±12 days and 17±18 days, median duration of catheterization was 29 days (7~545 days) and 100.5 days (25~606 days) (P=0.001), and incidence of CVC related septicemia was 5.28/1000 days and 3.08/1000 days, respectively. In the CVC related septicemia, the most common etiologic organism was coagulase negative staphylococcus. Conclusion: We suggest that the exchange of CVC before admission to laminar air flow room could decrease the incidence of CVC related septicemia in HSCT recipients.
Kwon, Hyuk-Chan,Kim, Sung Hyun,Oh, Sung Yong,Lee, Suee,Kwon, Kyung A,Choi, Hong-Jo,Park, Ki-Jae,Kim, Hyo-Jin,Roh, Mee Sook Potamitis Press 2010 Anticancer research Vol.30 No.10
<P>BACKGROUND: The principal objective of this study was to evaluate the prognostic significances of p53, hypoxia inducible factor-1 alpha (HIF-1관), and vascular endothelial growth factor (VEGF) expression in colorectal cancer. MATERIALS AND METHODS: The tumor tissues of 311 patients with colorectal carcinoma that had undergone potentially curative resections were immunohistochemically assessed using monoclonal antibodies against p53, HIF-1관, and VEGF. RESULTS: Positivity rates of p53, HIF-1관, and VEGF were 42.4%, 63.0%, and 56.6%, respectively. HIF-1관 expression in tumor tissues was determined to be correlated significantly with the expression of VEGF (p=0.040), and depth of invasion (p=0.019). Multivariate analysis demonstrated that HIF-1관 was independently associated with poor overall survival (p=0.002). CONCLUSION: HIF-1관 expression is associated with VEGF expression and angiogenesis in colorectal carcinoma. Additionally, the expression of HIF-1관 in tumor tissue is associated with angiogenesis and poor overall survival in patients with colorectal cancer.</P>
Underactuated Three-Finger Robot Hand with Human-Like Flexion
Hyo-Chan Kwon,Doo-Hyun Cho,김권희 한국정밀공학회 2021 International Journal of Precision Engineering and Vol.22 No.5
Numerous studies have been conducted on three-finger robot hands, which are widely used in industries. These studies led to the development of motorized prosthetic hands for amputees. Although many developers have focused on the functionality of motorized prosthetic hands, prosthetic users place more importance on the human-like motion of the device owing to social implications. Therefore, this study aims to achieve human-like flexion of a three-finger robot hand. Each finger contains three phalanges joined by pivots and torsional return springs. A tendon wire runs through guide pins inside the phalanges up to the linear actuator located in the forearm. When the tendon wire is pulled, the finger is flexed. The return springs are optimally selected based on ADAMS simulations and kinesiology of the human hand. The selection is then verified by experiments.
KWON, Hyuk-Chan,KIM, Min Chan,KIM, Ki Han,JANG, Jin Seok,OH, Sung Yong,KIM, Sung-Hyun,KWON, Kyung A.,LEE, Suee,LEE, Hyung Sik,KIM, Hyo-Jin Wiley (Blackwell Publishing) 2010 Asia-Pacific journal of clinical oncology Vol.6 No.4
<P>Aim:??Adjuvant chemoradiation has become a standard of care in the USA. We evaluated the efficacy and toxicity of adjuvant chemoradiation versus chemotherapy in completely resected locally advanced gastric cancer. Methods:??Patients with stage IIIA, IIIB and IV (without metastasis) gastric cancer were treated with chemoradiation and 5-fluorouracil/cisplatin (FP) (arm A) or FP (arm B). Arm A consisted of one cycle of FP followed by 4500?GY to radiation field with capecitabine. One month after completion of radiotherapy, patients received three additional cycles of FP every 3?eeks. Arm B consisted of six cycles of FP. Results:??A total of 61 patients were enrolled, of whom 31 were placed in arm A and 30 in arm B. The median follow-up duration was 77.2?onths (range 24-92.8?onths). We did not find any difference in 3-year disease-free survival between arm A and B (80.0 vs 75.2%, respectively; P????.887). There was no significant difference between the arms in 5-year disease-free survival (76.7 vs 59.1%, respectively; P????.222) or overall survival (70.1 vs 70.0%, respectively; P????.814). Seven patients (22.6%) relapsed in arm A and 12 patients (40%) relapsed in arm B. Grade 3/4 neutropenia occurred in 48.5% of patients in arm A and 22.9% in arm B. Grade 3 nausea or vomiting occurred in 6% in arm A and 14.6% in arm B. Conclusion:??We could not make any conclusion about the benefit of adding radiation to adjuvant chemotherapy.</P>