3篇
您的检索式：作者名="Tianyang Qiu"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Factors influencing pore-pressure prediction in complex carbonates based on effective medium theory显示文摘A calculation model based on effective medium theory has been developed for predicting elastic properties of dry carbonates with complex pore structures by integrating the Kuster-Toksǒz model with a differential method.All types of pores are simultaneously introduced to the composite during the differential iteration process according to the ratio of their volume fractions.Based on this model,the effects of pore structures on predicted pore-pressure in carbonates were analyzed.Calculation results indicate that cracks with low pore aspect ratios lead to pore-pressure overestimation which results in lost circulation and reservoir damage.However,moldic pores and vugs with high pore aspect ratios lead to pore-pressure underestimation which results in well kick and even blowout.The pore-pressure deviation due to cracks and moldic pores increases with an increase in porosity.For carbonates with complex pore structures,adopting conventional pore-pressure prediction methods and casing program designs will expose the well drilling engineering to high uncertainties.Velocity prediction models considering the influence of pore structure need to be built to improve the reliability and accuracy of pore-pressure prediction in carbonates. | Wang Ruihe Wang Zizhen Shan Xun Qiu Hao Li Tianyang | 2013 | Petroleum Science2013，10，4： | 3 |
| 2 | Determination of Total Flavonoids in Acanthopanax senticosus(Rupr. et Maxim.) Harms by Enzymolysis and Its Technological Optimization显示文摘In order to optimize the ultrasonic extraction technique for the total flavonoid of leaf yellows plus, the contents of 21 leaf yellows plus total flavonoid from four regions in Heilongjiang Province were comparatively analyzed. The ultrasonic extraction technology was optimized by Box-Behnken response surface method, and the total flavonoid content of 21 kinds of Acanthopanax senticosus(Rupr. et Maxim.) Harms from different producing areas were analyzed by cluster analysis. The optimal process conditions were determined as ultrasonic time 30 min, solid-liquid ratio 1 : 12 and ultrasonic power 250 W, and the average yield of the total flavonoid was 1.453 mg·g^ (-1). By optimizing the ultrasonic-assisted extraction method, the total flavonoid content from different producing areas was compared in the experiment, which provided certain data support for the optimization of the extraction process in the future and laid a certain theoretical foundation for the quality analysis of Chinese medicinal materials. | Li Xinzhi Wang Yudan Wang Meiliang Liu Tianyang Gao Ruihua Qiu Youwen Zhang Shunjie | 2024 | Journal of Northeast Agricultural University(English Edition)2024，31，1： | 0 |
| 3 | WO_(3)@Fe_(2)O_(3) Core-Shell Heterojunction Photoanodes for Efficient Photoelectrochemical Water Splitting显示文摘Photoelectrochemical(PEC) hydrogen production from water splitting is a green technology to convert solar energy into renewable hydrogen fuel. The construction of host/guest architecture in semiconductor photoanodes has been proven to be an effective strategy to improve solar-to-fuel conversion efficiency. In this study, WO_(3)@Fe_(2)O_(3) core-shell nanoarray heterojunction photoanodes are synthesized from the in-situ decomposition of WO_(3)@Prussian blue(WO_(3)@PB) and then used as host/guest photoanodes for photoelectrochemical water splitting, during which Fe_(2)O_(3) serves as guest material to absorb visible solar light and WO_(3) can act as host scaffolds to collect electrons at the contact. The prepared WO_(3)@Fe_(2)O_(3) shows the enhanced photocurrent density of 1.26 m A cm^(-2)(under visible light) at 1.23 V. vs RHE and a superior IPEC of 24.4% at 350 nm, which is higher than that of WO_(3)@PB and pure WO_(3)(0.43 m A/cm^(-2) and 16.3%, 0.18 m A/cm^(-2) and 11.5%) respectively, owing to the efficient light-harvesting from Fe_(2)O_(3) and the enhanced electron-hole pairs separation from the formation of type-Ⅱ heterojunctions, and the direct and ordered charge transport channels from the one-dimensional(1D) WO_(3) nanoarray nanostructures. Therefore, this work provides an alternative insight into the construction of sustainable and cost-effective photoanodes to enhance the efficiency of the solar-driven water splitting. | Guobing Mao Heng Wu Tianyang Qiu Dingjie Bao Longjie Lai Wenguang Tu Qi Liu | 2022 | Chinese Journal of Structural Chemistry2022，41，8： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员