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9篇 您的检索式:作者名="YE Qifang"
    题名 作者 年代 出处 被引量
1Dynamic analysis of a pilot-oper- ated two-stage solenoid valve used in pneumatic system显示文摘Ye Qifang Chen Jiangping 2009Simulation Modelling Practice and Theory2009,17,5:1
2A new model for depicting mass flow rate characteristic of electronic expansion valves显示文摘LIU Jinghui CHEN Jiangping YE Qifang 2007Experimental Thermal and Fluid Science2007,32,1:1
3Dynamic analysis of a pilot- operated two-stage solenoid valve used in pneumatic sys- tem 显示文摘Ye Qifang Chen Jiangping 2009Simulation Modeling Practice and Theory2009,,17:1
4Dynamic analysis of a pilot-operated two-stage solenoid valve used in pneumatic system 显示文摘Ye Qifang Chen Jiangping 2009Simulation Modeling Practice and Theory2009,17,5:1
5Dynamic analysis of a pilot-operated two-stage solenoid valve used in pneumatic system 显示文摘Ye Qifang Chen Jiangping 2009Simulation Modelling Practice and Theory2009,,17:1
6Dynamic analysis of a pi- lot-operated two-stage solenoid valve used in pneumat- ic system显示文摘Ye Qifang Chen Jiangping 2009Simulation Modelling Practice and The- ory2009,17,5:1
7Variation Laws and Influencing Factors of pH in Fishery Waters in Quzhou City显示文摘[Objectives] This study was conducted to strengthen the understanding of the variation laws of pH in fishery waters. [Methods]Based on the investigation data of pH, dissolved oxygen(Do), water temperature(T) and chlorophyll a(Chl. a) of the fishery waters in Quzhou City from 2017 to 2020, the seasonal variation characteristics and influencing factors of pH in the fishery waters were analyzed and discussed. [Results] The pH of the fishery waters in Quzhou City was in the range of 6.40-11.3, and was characterized by the highest seasonal variation in spring and the lowest in winter. The correlation analysis showed that water temperature and pH were significantly positively correlated in spring and summer(P<0.05), and the photosynthesis of phytoplankton was the main reason that affected the pH of water bodies in spring and summer. There was a negative correlation between water temperature and pH in winter, and the pH in the natural waters had a significant negative correlation with water temperature(P<0.05). The balance of carbonate system in the water bodies was the main reason that affected the pH of water in winter. The level of water eutrophication(Chl. a) affected the pH of fishery waters to a certain extent. When Chl. a<10 μg/L, there was a significant positive correlation between the pH of fishery waters and Chl. a(P<0.05). Various environmental factors had different effects on the pH of different types of fishery waters. The stepwise regression analysis showed that the pH of natural waters was mainly affected by Chl. a, and the pH of aquaculture waters was mainly affected by water temperature and dissolved oxygen. [Conclusions]This study provides certain theoretical support for actual production management.Qinxuan SHI Xueping YE Dongren ZHOU Sheng GAO Qifang WU Feng LIN Ting YE 2021Agricultural Biotechnology2021,10,1:1
8Dynamic analysis of a pi-lot-operated two-stage solenoid valve used in pneumaticsystem 显示文摘Ye Qifang Chen Jiangping 2009Simulation Modeling Practice and Theory2009,17,5:1
9Experimental investigation of R407C and R410A flow through electronic expansion valve 显示文摘Ye Qifang Chen Jiangping Chen Zhijiu 2007Energy Conversion and Management2007,48,:1
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