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- 저자 : ( Min-guan Lin ) (검색결과 3 건)
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Health-related quality of life of patients with inflammatory bowel disease in Singapore
( Prisca Yue Min Ho ),( Wenjia Hu ),( Ying Yun Lee ),( Chuxi Gao ),( Yan Zhi Tan ),( Hua Heng Cheen ),( Hwee Lin Wee ),( Teong Guan Lim ),( Wan Chee Ong ) 대한장연구학회 2019 Intestinal Research Vol.17 No.1
Background/Aims: Inflammatory bowel disease (IBD) is associated with considerable impairment of patients’ health-related quality of life (HRQoL). Knowledge of factors that significantly affect IBD patients’ HRQoL can contribute to better patient care. However, the HRQoL of IBD patients in non-Western countries are limited. Hence, we assessed the HRQoL of Singaporean IBD patients and identified its determinants. Methods: A prospective, cross-sectional study was conducted at Singapore General Hospital outpatient IBD Centre. The HRQoL of IBD patients was assessed using the short IBD questionnaire (SIBDQ), Short Form-36 physical and mental component summary (SF-36 PCS/MCS) and EuroQol 5-dimensions 3-levels (EQ-5D-3L) and visual analogue scale (VAS). Independent samples t-test was used to compare HRQoL between Crohn’s disease (CD) and ul cerative colitis (UC). Determinants of HRQoL were identified through multiple linear regression. Results: A total of 195 IBD pa tients (103 UC, 92 CD) with a mean disease duration of 11.2 years were included. There was no significant difference in HRQoL between patients with UC and CD. Factors that significantly worsened HRQoL were presence of active disease (b=-6.293 [SIBDQ], -9.409 [PCS], -9.743 [MCS], -7.254 [VAS]), corticosteroids use (b=-7.392 [SIBDQ], -10.390 [PCS], -8.827 [MCS]), poor medication adherence (b=-4.049 [SIBDQ], -1.320 [MCS], -8.961 [VAS]), presence of extraintestinal manifestations (b=-13.381 [PCS]), comorbidities (b=-4.531 [PCS]), non-employment (b=-9.738 [MCS], -0.104 [EQ-5D-3L]) and public housing (b=-8.070 [PCS], -9.207 [VAS]). Conclusions: The HRQoL is impaired in this Asian cohort of IBD. The magnitude of HRQoL impairment was similar in UC and CD. Clinical characteristics were better determinants of patients’ HRQoL than socio-demographic fac tors. Recognizing the factors that impact patients’ HRQoL would improve the holistic management of IBD patients. (Intest Res 2019;17:107-118)
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( Huei-fen Lo ),( Meng-chun Chi ),( Min-guan Lin ),( Yuan-gin Lan ),( Tzu-fan Wang ),( Long-liu Lin ) 한국미생물생명공학회(구 한국산업미생물학회) 2018 Journal of microbiology and biotechnology Vol.28 No.9
In the present study, the stabilizing effect of four different biological osmolytes on Bacillus licheniformis γ-glutamyl transpeptidase (BlGGT) was investigated. BlGGT appeared to be stable under temperatures below 40°C, but the enzyme retained less than 10% of its activity at 60°C. The tested osmolytes exhibited different degrees of effectiveness against temperature inactivation of BlGGT, and sucrose was found to be the most effective among these. The use of circular dichroism spectroscopy for studying the secondary structure of BlGGT revealed that the temperature-induced conformational change of the protein molecule could be prevented by the osmolytes. Consistently, the molecular structure of the enzyme was essentially conserved by the osmolytes at elevated temperatures as monitored by fluorescence spectroscopy. Sucrose was further observed to counteract guanidine hydrochloride (GdnHCl)- and urea-induced denaturation of BlGGT. Taken together, we observed evidently that some well-known biological osmolytes, especially sucrose, make a dominant contribution to the structural stabilization of BlGTT.
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Research of liquid-solid two phase flow in centrifugal pump with crystallization phenomenon
Liu, Dong,Wang, Ya-Yun,Wang, Ying-Ze,Wang, Chun-Lin,Yang, Min-Guan Korean Society for Fluid machinery 2014 International journal of fluid machinery and syste Vol.7 No.2
Particle Image Velocimetry combined with developed image processing method is adopted to study the liquid-solid two phase flow in the centrifugal pump impeller with crystallization phenomenon. The tracer particle is used to follow the liquid phase, which has the diameter between 8 to $12{\mu}m$. The crystal particle precipitates from the sodium sulfate solution does change the wavelength of the laser, and which has great laser scattering characteristics. The diameter of the crystal particle is larger than $20{\mu}m$. Through calculating the diameter of the particles in the image, the tracer particle and the crystal particle can be distinguished. By analyzing the experimental result, the following conclusion has been obtained. During the delay period, there is not any crystal particle and the pump performance has not been changed. As the crystallization process begins, the crystal nuclei appears from the supersaturation solution and grows larger with temperature decreasing, which has the tendency of moving towards the pressure side. The characteristics of liquid-solid two phase flow with crystallization phenomenon in the pump are obtained according to analysis of experimental results, and some guiding advices are presented to mitigate the crystallization phenomenon in pump impeller.
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