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A NOVEL FILLED FUNCTION METHOD FOR GLOBAL OPTIMIZATION
Lin, Youjiang,Yang, Yongjian,Zhang, Liansheng Korean Mathematical Society 2010 대한수학회지 Vol.47 No.6
This paper considers the unconstrained global optimization with the revised filled function methods. The minimization sequence could leave from a local minimizer to a better minimizer of the objective function through minimizing an auxiliary function constructed at the local minimizer. Some promising numerical results are also included.
A NOVEL FILLED FUNCTION METHOD FOR GLOBAL OPTIMIZATION
Youjiang Lin,Yongjian Yang,Liansheng Zhang 대한수학회 2010 대한수학회지 Vol.47 No.6
This paper considers the unconstrained global optimization with the revised filled function methods. The minimization sequence could leave from a local minimizer to a better minimizer of the objective function through minimizing an auxiliary function constructed at the local minimizer. Some promising numerical results are also included.
Effects of inlet working condition and heat load on supercritical CO2 compressor performance
Pei Jinze,Zhao Yuanyang,Zhao Mingran,Liu Guangbin,Yang Qichao,Li Liansheng 한국원자력학회 2023 Nuclear Engineering and Technology Vol.55 No.8
The supercritical carbon dioxide (sCO2) Brayton power cycle is more effective than the conventional power cycle and is more widely applicable to heat sources. The inlet working conditions of the compressor have a higher influence on their operating performance because the thermophysical properties of the CO2 vary dramatically close to the critical point. The flow in the sCO2 compressor is simulated and the compressor performance is analyzed. The results show that the sCO2 centrifugal compressor operates outside of its intended parameters due to the change in inlet temperature. The sCO2 compressor requires more power as the inlet temperature increases. The compressor power is 582 kW when the inlet temperature is at 304 K. But the power is doubled when the inlet temperature increases to 314 K, and the change in the isentropic efficiency is within 5%. The increase in the inlet temperature significantly reduces the risk of condensation in centrifugal compressors. When the heat load of the sCO2 power system changes, the inlet pressure to the turbine can be kept constant by regulating the rotational speed of compressors. With the increase in rotational speed, the incidence loss and condensation risk increase
Xihong Zhao,Li Wang,Jin Chu,Yanyan Li,Yanmei Li,Lin Li,Mark E. Shirtliff,Xiaowei He,Yao Liu,Jihua Wang,Liansheng Yang,Zhenbo Xu 한국식품과학회 2010 Food Science and Biotechnology Vol.19 No.5
A loop-mediated isothermal amplification (LAMP) method for rapid detection of the foodborne Vibrio parahaemolyticus strains and related virulent factors had been developed and evaluated in this study. Six primers, including outer primers, inner primers, and loop primers, were specially designed for recognizing 8 distinct sequences on 3 target genes, which were tlh, tdh, and trh. The detection limits were found to be 100, 100 fg, and 1 pg DNA/tube for tlh, tdh, and trh, respectively. Application of LAMP assays were performed on 368 foodborne V. parahaemolyticus strains, the sensitivities of LAMP assays for the tlh, tdh, and trh were 100, 95.6, and 96.4%, and the negative predictive values (NPV) were 100, 84.7, and 93.1%, respectively; with a 100% specificity and positive predictive value (PPV) for all 3 target genes.
Xihong Zhao,Li Wang,Jin Chu,Yanmei Li,Yanyan Li,Zhenbo Xu,Lin Li,Mark E. Shirtliff,Xiaowei He,Yao Liu,Jihua Wang,Liansheng Yang 한국식품과학회 2010 Food Science and Biotechnology Vol.19 No.6
A loop-mediated isothermal amplification (LAMP) method for rapid detection of the food-borne Salmonella strains had been developed and evaluated in this study. The optimal reaction condition was found to be 65℃ for 45 min, with the detection limit as 1 pg DNA/tube and 100 CFU/reaction. Application of LAMP assays was performed on 214 food-borne Salmonella strains using a rapid procedure and easy result confirmation, where the specificity of LAMP and polymerase chain reaction (PCR)assays was 97.7% (209/214) and 91.6% (196/214),respectively; with a 100% specificity for both assays.