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RISS 인기검색어
- 검색키워드
- 저자 : Lai Ching Ting (검색결과 7 건)
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( Robert G Gish ),( Ting Tsung Chang ),( Ching Lung Lai ),( Robert A De Man ),( Adrian Gadano ),( Song Yu ),( Cyril Llamoso ),( Hong Tang ) 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.1
Background: Entecavir (ETV) 0.5 mg demonstrated superior virologic, histologic, and biochemical benefit compared to lamivudine in phase III study ETV-022. Through 96 weeks of treatment and 24 weeks post-treatment follow-up, 5% of the patients achieved HBsAg loss. We present the changes in quantitative HBsAg levels in patients with HBeAg-positive nucleoside naive chronic hepatitis B patients treated with ETV in study ETV-022. Methods: The nucleoside-naive HBeAg-positive patients received ETV 0.5mg daily in study ETV-022. HBsAg levels were assessed qualitatively and quantitatively every 12 weeks. The quantitative HBsAg levels were measured with the Abbott Architect Assay. Mean HBsAg levels were calculated at baseline, week 12, 24, 36 and 48 for the overall cohort and cohorts with HBeAg loss or HBsAg loss. Results: A total of 95 ETV-treated patients from study ETV-022 had available blood samples and were analyzed for quantitative HBsAg levels. Baseline characteristics of patients include mean age 38 years old, mean HBV DNA 9.64 log10 copies/mL and ALT 156.65 U/L. The quantitative HBsAg levels over time in different patient groups are listed below Conclusion: Quantitative HBsAg levels decreased overtime during the first 48 weeks of ETV therapy in HBeAg-positive nucleoside naive patients. A greater declination in quantitative HBsAg value was observed among subjects who had HBeAg loss or HBsAg loss.
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Yang Yung Yu,Lai Ching Ting 한국응용곤충학회 2019 Journal of Asia-Pacific Entomology Vol.22 No.1
The brown Planthopper (BPH), Nilaparvata lugens is a major pest of rice production in tropical Asia. The appearance of insecticide resistance challenges the control of BPH in field. The development of new insecticide is expensive and time-consuming. Thus, the precise and proper use of existing compounds becomes an important issue in resistance management of this pest. In this study, five commercial insecticides of BPH (permethrin, chlorpyrifos, imidacloprid, clothianidin and thiamethoxam) were tested to explore the toxicity of the binary mixture between different kinds of insecticides. In all combinations of mixture, the mixtures of permethrin and chlorpyrifos displays synergistic effect at three different mixture ratios (1:1, 1:10 and 10:1). The strongest synergism observed in permethrin/ chlorpyrifos mixtures at 1:1 ratio (Combination index, CI = 0.39). Addition of enzyme inhibitor followed by detoxification enzyme activity assays suggested that the mechanism of synergistic effect of permethrin/chlorpyrifos mixture may result from inhibition of the cytochrome P450 monooxygenase and esterase activity. This inference can be supported through two lines of evidence. One is decrease of toxicity when permethrin/chlorpyrifos mixture in a 1:1 ratio plus triphenyl phosphate (TPP) or piperonyl butoxide (PBO), but increase of toxicity when permethrin/chlorpyrifos mixture in a 10:1 ratio plus TPP or PBO. Another is exposure of the 3rd instar nymphs to permethrin/chlorpyrifos mixture after 72 h also significantly decreased both cytochrome P450 monooxygenases and esterase activity. Further field trail showed the mixture of 50 ppm permethrin +50 ppm chlorpyrifos increased the field control efficiency significantly rather than permethrin alone or chlorpyrifos alone. Our study indicated that the mixture of permethrin and chlorpyrifos in a 1:1 ratio might be an effective method for the control of BPH in paddy field.
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A Simple Partial Discharge Detector for Low-Voltage Rotating Electrical Machines
Cheng-Chi Tai,Ting-Cheng Huang,Ching-Chau Su,Chien-Yi Chen,Ju-Chu Hsieh,Yu-Shiun Lin,Chung-Tzong Wang,Jeng-Hung Lai 전력전자학회 2007 ICPE(ISPE)논문집 Vol.- No.-
A new, simple partial discharge (PD) detector for low-voltage rotating electrical machines using acoustical emission (AE) technique is dseveloped in this study. Common electric components were used in the detector, which reduces the cost of inspection, comparing with the traditional PD detection methods that use expensive equipment costing from tens of thousands to several millions dollars. Experimental results by resonant type AE sensors (150 ㎑) which utilize power line-cycle in a microcontroller unit (MCU) as reference to measure the PDs generated in a low-voltage motor are presented. The AE signals are then amplified by a pre-amplifier (30 ㎑ ~ 300 ㎑, 34 ㏈). Since the resonant frequency of the sensor is much lower than that of the electromagnetic (EM) interferences around the motor, the effects of noise is substantially reduced by this method. In the mean time, the use of 150-㎑ resonant type AE sensor also avoids the disturbance of mechanical vibration noise. According to the experiment results, the measurement system developed in this study can be used to detect the PDs’ AE signals correctly. The AE measurement scheme proposed in this study provides an effective, low-cost method for PD measurements.
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( Robert G Gish ),( Ting Tsung Chang ),( Ching Lung Lai ),( Robert A De Man ),( Adrian Gadano ),( Song Yu ),( Cyril Llamoso ),( Hong Tang ) 대한간학회 2012 춘·추계 학술대회 (KASL) Vol.2012 No.-
Background: Entecavir (ETV) 0.5 mg demonstrated superior virologic, histologic, and biochemical benefit compared to lamivudine in phase III study ETV-022. Through 96 weeks of treatment and 24 weeks post-treatment follow-up, 5% of the patients achieved HBsAg loss. We present the changes in quantitative HBsAg levels in patients with HBeAg-positive nucleoside naive chronic hepatitis B patients treated with ETV in study ETV-022. Methods: The nucleoside-naive HBeAg-positive patients received ETV 0.5mg daily in study ETV-022. HBsAg levels were assessed qualitatively and quantitatively every 12 weeks. The quantitative HBsAg levels were measured with the Abbott Architect Assay. Mean HBsAg levels were calculated at baseline, week 12, 24, 36 and 48 for the overall cohort and cohorts with HBeAg loss or HBsAg loss. Results: A total of 95 ETV-treated patients from study ETV-022 had available blood samples and were analyzed for quantitative HBsAg levels. Baseline characteristics of patients include mean age 38 years old, mean HBV DNA 9.64 log10 copies/mL and ALT 156.65 U/L. The quantitative HBsAg levels over time in different patient groups are listed below: Conclusion: Quantitative HBsAg levels decreased overtime during the first 48 weeks of ETV therapy in HBeAg-positive nucleoside naive patients. A greater declination in quantitative HBsAg value was observed among subjects who had HBeAg loss or HBsAg loss.
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A case series of emergency pancreaticoduodenectomies: What were their indications and outcomes?
Kit-Fai Lee,Janet Wui Cheung Kung,Andrew Kai Yip Fung,Hon-Ting Lok,Charing Ching Ning Chong,John Wong,Kelvin Kai Chai Ng,Paul Bo San Lai 한국간담췌외과학회 2023 Annals of hepato-biliary-pancreatic surgery Vol.27 No.4
Emergency pancreaticoduodenectomy (EPD) is a rarely performed operation. It is important to know the indications and outcomes of EPD to have a better understanding of its application in clinical practice. A review of eight consecutive cases of EPD was done. Between January 2003 and December 2021, 8 out of 370 patients (2.2%) in a single center received pancreaticoduodenectomy as emergency. There were six males and two females with a median age of 45.5 years. The indications were trauma in three patients, bleeding tumors in two patients, and one patient each in obstructing duodenal tumor, postoperative complication and post-endoscopic retrograde cholangiopancreatography (ERCP) complication. The median operative time and blood loss were 427.5 minutes and 1,825 mL, respectively. There was no operative mortality. Seven patients (87.5%) had postoperative complications. Three patients (37.5%) developed postoperative grade B pancreatic fistula. The median postoperative hospital stay was 23.5 days. Five patients were still alive while three patients survived for 13, 31, and 42 months after the operation. The causes of death were recurrent tumors in two patients, and sepsis in one patient. According to this case series, EPD is associated with increased morbidity and pancreatic fistula, but is still deserved in life-threatening situations and long-term survival is possible after EPD.
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Kit-Fai Lee,Kandy Kam Cheung Wong,Eugene Yee Juen Lo,Janet Wui Cheung Kung,Hon-Ting Lok,Charing Ching Ning Chong,John Wong,Paul Bo San Lai,Kelvin Kwok Chai Ng 한국간담췌외과학회 2022 Annals of hepato-biliary-pancreatic surgery Vol.26 No.1
Backgrounds/Aims: Postoperative pancreatic fistula (POPF) after pancreaticoduodenectomy (PD) remains a dreadful complication. Duct-to-mucosa pancreaticojejunostomy (DTMPJ) is a commonly performed anastomosis after PD. This study aims to evaluate whether there is a size limit of pancreatic duct below which POPF rate increases significantly after DTMPJ. Methods: A retrospective study was performed from a database with prospectively collected data on consecutive patients undergoing DTMPJ. Results: Between the years 2003 and 2019, a total of 288 patients with DTMPJ were recruited. POPF occurred in 56.3% of the patients, of which 43.8% were biochemical leak, 8.7% were grade B, and 1.4% were grade C. Overall operative morbidity was 51.4%, of which 19.1% were major complications. Five patients (1.7%) died within 90 days of operation. Patients with grade B/C POPF had significantly soft pancreas (p < 0.001), smaller duct size (p = 0.031), and a diagnosis of carcinoma of the pancreas (p = 0.027). When a clinically significant POPF rate was analysed based on the pancreatic duct diameter, pancreatic duct size ≤ 1 mm had the highest POPF rate (35.7%). There was a significant difference in POPF rate between adjacent ductal diameter ≤ 1 mm and > 1 mm to 2 mm (35.7% vs 13.3%; p = 0.040). Multivariable analysis showed that for the soft pancreas, pancreatic duct diameter ≤ 1 mm was the only significant predictive factor for POPF (p = 0.027). Conclusions: DTMPJ can be safely performed for pancreatic duct > 1 mm without significantly increased POPF risk.
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