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Cycle performance studies on a new HFC-161/125/143a mixture as an alternative refrigerant to R404

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2012年第2期13卷 132-139页

作者： Xiao-hong HAN Yu QIU ying-jie xu Men-yuan ZHAO Qin WANG Guang-ming CHEN State Key Laboratory of Clean Energy Utilization Institute of Refrigeration and CryogenicsZhejiang UniversityHangzhou 310027China

In this paper, a new ternary non-azeotropic mixture of HFC-161/125/143a （0.15/0.45/0.40 in mass fraction）, as a promising mixed refrigerant to R404A, is presented. The ozone depletion potential （ODP） of the new refrigerant is zero and its basic thermodynamic properties are similar to those of R404A, but its global warming potential （GWP） is much smaller than those of R507A and R404A. Meanwhile, theoretical calculations show that, under the working condition 1 （the average evaporation temperature： -23℃, the average condensing temperature： 43℃, the superheat temperature： 28℃, the subcooling temperature： 5 ℃）, the volumetric refrigerating effect and specific refrigerating effect of the new mixture are 2.33% and 15.48% higher, re- spectively, than those of R404A. The coefficient of performance （COP） of the new mixture is 5.19% higher than that of R404A and the pressure ratio of the new mixture is 0.82% lower than that of R404A. Equally, under the working condition II （the average evaporation temperature： -40℃, the average condensing temperature： 35℃, the superheating temperature： 30 ~C, the subcooling temperature： 5℃）, the volumetric refrigerating effect and specific refrigerating effect of the new mixture are 2.24% and 20.58% higher, respectively, than those of R404A. The COP of the new mixture is 4.60% higher than that of R404A and the pressure ratio of the new mixture is similar to that of R404A. The performances of the new mixture and R404A are compared in a vapor compressor refrigeration apparatus originally designed for R404A under several working conditions （condensing temperatures： 35-45℃, evaporation temperatures： -40--20℃）. Experimental results show that the new mixture can obtain a higher COP, by 6.3% to 12.1%, and a lower pressure ratio, by 1.8% to 6.6%, compared to R404A; although the discharge temperature of the new mixture is slightly higher than that of R404A. The advantages of the new mixture will be further verified in the actual system.

关键词： Alternative refrigerant Mixture Cycle nerformance. R404A HFC-161

Shale gas production evaluation framework based on data-driven models

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Petroleum Science 2023年第3期20卷 1659-1675页

作者： You-Wei He Zhi-Yue He Yong Tang ying-jie xu Ji-Chang Long Kamy Sepehrnoori State Key Laboratoryofiland Gas Rseroir Geoogy and Exloitation Southwest Petroleum UniverstyChengdu00SichuanChina Department of Petroleum and Geosystems Engineering The University of Texas at AustinAustinTX78712UA

Increasing the production and utilization of shale gas is of great significance for building a clean and low-carbon energy *** decline of gas production has been widely observed in shale gas *** to forecast shale gas production is still challenging due to complex fracture networks,dynamic fracture properties,frac hits,complicated multiphase flow,and multi-scale flow as well as data quality and *** work develops an integrated framework for evaluating shale gas well production based on data-driven ***,a comprehensive dominated-factor system has been established,including geological,drilling,fracturing,and production *** processing and visualization are required to ensure data quality and determine final data set.A shale gas production evaluation model is developed to evaluate shale gas production ***,the random forest algorithm is used to forecast shale gas *** prediction accuracy of shale gas production level is higher than 95%based on the shale gas reservoirs in ***-one wells are randomly selected to predict cumulative gas production using the optimal regression *** proposed shale gas production evaluation frame-work overcomes too many assumptions of analytical or semi-analytical models and avoids huge computation cost and poor generalization for numerical modelling.

关键词： Shale gas Production evaluation Production prediction Data-driven models Carbon neutrality

Study on the transverse structures across Taiwan Strait

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Science China Earth Sciences 2002年第12期45卷 1114-1126页

作者： MA Zongjin (马宗晋) WANG Chien-ying (王乾盈) xu jie (徐杰) NIE Fengjun (聂逢君) ZHANG Jin (张进) Institute of Geology China Seismological Bureau Beijing 100029 China Institute of Geophysics National Central University Taibei 32054 China Institute of Geology China Seismological Bureau Beijing 100029 China Institute of Geology China Seismological Bureau Beijing 100029 China Institute of Geology China Seismological Bureau Beijing 100029 China

The mountain ranges are almost NE- or NNE-trending in mainland and Taiwan island across the strait. But a number of correspondent transverse structures across Taiwan Strait have been identified on the basis of morphology, surface structure, deep seismic survey and gravity field etc. Moreover, it is inferred from the square or/and rectangular shape of the isoseist maps of 8 M≥6 earthquakes occurring in the western foothill plain of Taiwan that there is an apparent segmentation of the Taiwan Island along the N-S orientation. This has been verified from the GPS's results of the ground motions measured during the Chi-Chi earthquake in 1999. As a matter of fact, the transverse structures within the Taiwan Island could be correlated with more salient NW- and EW-trending structures in the mainland of Fujian than in Taiwan. The investigation of the transverse structures across Taiwan Strait is conducive to realizing the geology within the strait. Hence, the tectonic sketch map of the strait as well as mainland and island drawn in this context shows NW- and EW-trending structures for the study area.

关键词： Taiwan Strait, transverse structure, Chi-Chi earthquake, GPS.

Tetramethylguanidium Lactate Ionic Liquid: Catalyst-free Medium for Michael Addition Reaction

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Chemical Research in Chinese Universities 2008年第1期24卷 36-41页

作者： LIANG Da-peng XIN Xin DUAN Hai-feng YIN Yan-zhen GAO Han LIN ying-jie xu Jia-ning Department of Organic Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China

A catalyst-free, facile and efficient Michael addition reaction of active methylene compounds as well as nitromethane with chalcones catalyzed by guanidinium lactate ionic liquid was done. A series of chalcones, nitromethane, and active methylene compounds were converted smoothly to the corresponding products in high yields. The simple procedure, very mild conditions, high yields, and reuse of the IL without any loss of catalytic activity make this protocol considerably attractive for academic researches and practical applications.

关键词： Guanidinium lactate ionic liquid Michael addition reaction Chalcone Active methylene compound

Compatibility with Fructus Ligustri Lucidi Effectively Mitigates Idiosyncratic Liver Injury of Epimedii Folium by Modulating NOD-like Receptor Family Pyrin Domain Containing 3 Inflammasome Activation

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World Journal of Traditional Chinese Medicine 2024年第2期10卷 159-170页

作者： Xiao-Mei Zhao Zhi-Xin Wu Yan Wang ying-jie xu Ye Xiu xu Dong Jun-jie Li Gui-Ji Lv Si-Hao Wang Yu-Rong Li Zhao-Fang Bai Xiao-He Xiao Department of Pharmacy Chengdu University of Traditional Chinese MedicineChengdu China Department of Hepatology The Fifth Medical Center of PLA General HospitalBeijingChina Department of Military Patient Management The Fifth Medical Center of PLA General HospitalBeijingChina Department of Hepatology China Military Institute of Chinese Materia The Fifth Medical Center of PLA General HospitalBeijingChina Departmentof Hepatology National Key Laboratory of Kidney DiseasesBeijingChina

Background: Idiosyncratic drug-induced liver injury(IDILI) is a serious side effect of drugs, Epimedii Folium(EF) is unequivocally implicated in idiosyncratic liver injury onset, potentially due to its ability to perturb the NOD-like receptor family pyrin domain containing 3(NLRP3) inflammasome. Fructus Ligustri Lucidi(FLL), a frequently used medicinal combination with EF, has not yet been investigated for its ability to ameliorate EF-associated hepatotoxicity. Aims and Objectives: Study on the mechanism of compatibility of FLL to alleviate liver injury caused by EF. Materials and Methods: Western blot was used to determine the expression of related proteins, ELISA was used to detect the secretion of related inflammatory factors IL-1β, IL-18, IL-6 and TNF-α, liver injury indexes were detected and liver pathological tissue staining was used to evaluate the liver injury. Results: Our results demonstrated that EF exerted a particular augmenting effect on the stimulation of the NLRP3 inflammasome mediated by nigericin or ATP, whereas FLL suppressed the NLRP3 inflammasome stimulation. Furthermore, an equal EF to FLL ratio significantly reduced the stimulatory effects of EF. Moreover, EF has the potential to induce hepatic injury and augment pro-inflammatory cytokine synthesis in rats subjected to LPS. However, when combined with FLL, the detrimental effects of EF were mitigated. Conclusions: FLL possesses the capacity to attenuate EF-associated hepatotoxicity by suppressing EF-triggered NLRP3 inflammasome activation. Thus, FLL holds promise for improving the clinical safety profile of EF, shedding light on the potential of compatibility and detoxification theories in traditional Chinese medicine.

关键词： Epimedii Folium Fructus Ligustri Lucidi idiosyncratic drug-induced liver injury NOD-like receptor family pyrin domain containing 3 inflammasome traditional Chinese medicine

TWO NEW COUMARINS FROM ANGELICA PUBESCENS ***

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Chinese Chemical Letters 1993年第10期4卷 885-886页

作者： Jiang Hua LIU ying jie GUO Sui xu xu Xin Sheng YAO Department of Phytochemistry,Shenyang College of Pharmacy,Shenyang 1110015

Two new coumarins,4'-hydroxycolumbianetin named angelidiol(A)and 6- [(?)(R),2(S)-3-trihydroxy-3-methylbutyl]-7-methoxycoumarin named angelitriol(B),were isolated from the EtOAc-soluble fraction of the 80% EtOH extract... 详细信息

关键词： TWO NEW COUMARINS FROM ANGELICA PUBESCENS F.BISERRTA

TIME-DEPENDENT PLASTICIRY PRODUCED BY LTP OF C-FIBER EVOKED FIELD POTENTIALS IN SPINAL DORSAL HORN

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神经解剖学杂志 2001年第B7期17卷 123-124页

作者： Hong-Mei ZHANG~1, ying-jie QI~2, xu-ying XIANG~1, Xian-Guo LIU~1 ~1 Department of physiology, Sun Yat-sen University of Medical Sciences, 74 Zhongshan Rd 2, Guangzhou 510089,~2 Xinxiang Medical College, Henan

Aim: Hippocampal long-term potentiation (LTP), an activity-dependent plasticity in synaptic transmission, is believed as a fundamental mechanism of learning and memory. This form of plasticity also exists in spinal dorsal horn. Our previous work showed that electrical as well as natural noxious stimulation of afferent C-fibers or acute injury of the sciatic nerve produces LTP of C-fiber evoked field potentials in spinal dorsal horn.

关键词：脊髓背角 LTP C-纤维突触传导电刺激时间依赖性可塑性

Role of iron ore in enhancing gasification of iron coke:Structural evolution,influence mechanism and kinetic analysis

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 58-69页

作者： jie Wang Wei Wang xuheng Chen Junfang Bao Qiuyue Hao Heng Zheng Runsheng xu School of Chemistry and Materials Science Hubei Engineering UniversityXiaogan 432000China Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and TechnologyWuhan 430081China Institue of Ironmaking Technology Baosteel Central Research InstituteShanghai 201999China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

The utilization of iron coke provides a green pathway for low-carbon *** uncover the influence mechanism of iron ore on the behavior and kinetics of iron coke gasification,the effect of iron ore on the microstructure of iron coke was ***,a comparative study of the gasification reactions between iron coke and coke was conducted through non-isothermal thermogravimetric *** findings indicate that compared to coke,iron coke exhibits an augmentation in micropores and specific surface area,and the micropores further extend and *** provides more adsorption sites for CO_(2) molecules during the gasification process,resulting in a reduction in the initial gasification temperature of iron *** the heating rate in non-isothermal gasification can enhance the reactivity of iron *** metallic iron reduced from iron ore is embedded in the carbon matrix,reducing the orderliness of the carbon structure,which is primarily responsible for the heightened reactivity of the carbon *** kinetic study indicates that the random pore model can effectively represent the gasification process of iron coke due to its rich pore ***,as the proportion of iron ore increases,the activation energy for the carbon gasification gradually decreases,from 246.2 kJ/mol for coke to 192.5 kJ/mol for iron coke 15wt%.

关键词： low-carbon ironmaking iron coke gasification structural evolution kinetic model

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矿山尾矿中微量银元素快速检测方法的研究

光谱学与光谱分析 2017年第7期37卷 2242-2245页

作者：周伟喻杰周建斌万文杰马英杰许助费鹏成都理工大学核技术学院四川成都610059

针对矿山尾矿中微量银元素测定的技术难题,提出了一种基于超短光路原理的能量色散X荧光能谱快速检测的方法。提高元素测量分辨率,提高样品分析效率,降低光管功率,延长仪器使用寿命。能谱系统优化了滤片以及探测器屏蔽物等设计,准直器采... 详细信息

针对矿山尾矿中微量银元素测定的技术难题,提出了一种基于超短光路原理的能量色散X荧光能谱快速检测的方法。提高元素测量分辨率,提高样品分析效率,降低光管功率,延长仪器使用寿命。能谱系统优化了滤片以及探测器屏蔽物等设计,准直器采用对X射线基本无散射的聚四氟乙烯,达到微量银元素的检测要求。实际尾矿测试中,银的检出限达到0.1mg·kg^(-1),RSD在0.1%~2.6%之间,准确度在87%~115%之间。对比尾矿、原矿及精矿的检测实验,证明了在能量色散X荧光能谱中引入超短光路设计方法,能够提升系统峰/本底比,满足微量银元素的检测要求。

关键词：矿山尾矿微量银元素能量色散X荧光能谱超短光路