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Stability of high-salinity-enhanced foam:Surface behavior and thin-film drainage

Petroleum Science 2023年第4期20卷 2343-2353页

作者： Lin sun Xue-Hui sun yong-Chang Zhang Jun Xin Hong-ying sun yi-Bo Li Wan-Fen Pu Jin-Yu Tang Bing Wei National Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu610500SichuanChina No.9 Oil Production Plant PetroChina Changqing Oilfield CompanyYinchuan750006GansuChina Research Institute of Geological Exploration and Development CNPC Chuanqing Drilling Engineering Company LimitedChengdu610501SichuanChina Department of Chemical and Petroleum Engineering United Arab Emirates UniversityAl AinAbu Dhabi15551United Arab Emirates

Cocamidopropyl hydroxyl sulfobetaine(CHSB)is one of the most promising foaming agents for high-salinity reservoirs because the salt in place facilitates its foam stability,even with salinity as high as 2×10^(5)mg/***,the synergistic effects between CHSB and salt have not been fully *** study utilized bulk foam tests and thin-film interferometry to comprehensively investigate the macroscopic and microscopic decay processes of CHSB foams with NaCl concentrations ranging from 2.3×10^(4)to 2.1×10^(5)mg/*** focused on the dilatational viscoelasticity and dynamic thin-film thickness to elucidate the high-salinity-enhanced foam *** increase in dilatational viscoelasticity and supramolecular oscillating structural force(Π_(OS))with salinity dominated the superior stability of CHSB *** increasing salinity,more CHSB molecules accumulated on the surface with a lower diffusion rate,leading to high dilatational moduli and surface elasticity,thus decelerating coarsening and ***,the number density of micelles in the thin film increased with salinity,resulting in increasedΠ***,the energy barrier for stepwise thinning intensified,and the thin-film drainage *** work conduces to understand the mechanisms behind the pronounced stability of betaine foam and can promote the widespread application of foam in harsh reservoirs.

关键词： High-salinity reservoirs Betaine foam Foam stability Dilatational viscoelasticity Disjoining pressure Thin-film interferometry

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Spacecraft Doppler tracking with possible violations of LLI and LPI:upper bounds from one-way measurements on MEX

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Research in Astronomy and Astrophysics 2015年第10期15卷 1751-1757页

作者： yi Xie yong Huang School of Astronomy and Space Science Nanjing University Shanghai Key Laboratory of Space Navigation and Position Techniques Key Laboratory of Modern Astronomy and Astrophysics Nanjing UniversityMinistry of Education Shanghai Astronomical Observatory Chinese Academy of Sciences

We analyze the post-fit residuals of one-way Doppler tracking data from the Mars Express （MEX） spacecraft to test possible violations of local Lorentz invariance （LLI） and local position invariance （LPI）. These one-way Doppler observations were carried out on 2011 August 7 for about 20 minutes at Sheshan Station of Shanghai Astronomical Observatory in China. These downlink signals were sent by MEX for telemetry at X-band. Because we are not able to decode the data in the form of teleme- try and separate them from the carrier frequency, this makes the post-fit residuals of the Doppler data degrade to the level of 0.1 m s^-1. Even so, the residuals can still impose upper bounds on LLI and LPI at 10^-1, which is consistent with the prediction based on our analysis of the detectability. Although the upper bounds given by three-way Doppler tracking of MEX are better than those obtained in the present work, one-way Doppler measurements still provide a unique chance to test possible violations of LLI and LPI far from the ground stations.

关键词： space vehicles -- techniques: radial velocities -- gravitation

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刃宽对硬岩掘进影响的仿真及试验研究

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工程科学学报 2025年第1期47卷 13-24页

作者：尚勇孙靖东姜海峰许顺海段红磊孙朝阳北京科技大学机械工程学院北京100083 中铁工程装备集团隧道设备制造有限公司河南453000

滚刀在硬岩掘进中极易发生崩刃、偏磨等异常失效,研究硬岩掘进条件下刃型参数对滚刀破岩载荷和破岩效率的影响十分重要.本文采用滚刀破岩试验和仿真分析相结合的方法,从载荷曲线、破岩体积、破岩比能等方面分析了刃宽对滚刀破岩的影响.... 详细信息

滚刀在硬岩掘进中极易发生崩刃、偏磨等异常失效,研究硬岩掘进条件下刃型参数对滚刀破岩载荷和破岩效率的影响十分重要.本文采用滚刀破岩试验和仿真分析相结合的方法,从载荷曲线、破岩体积、破岩比能等方面分析了刃宽对滚刀破岩的影响.基于双线性本构模型及Benzeggagh–Kenane损伤断裂准则建立了岩石材料的内聚力本构模型,通过单轴抗压试验及巴西劈裂试验对内聚力本构模型的微观参数进行了校准,并进一步建立了滚刀破岩的内聚力仿真模型.结果表明:内聚力本构模型可以准确的模拟破岩过程中岩石裂纹的萌生和扩展过程.依据裂纹的萌生和扩展情况,滚刀破岩过程主要分为三个阶段:弹性阶段、裂纹萌生–扩展阶段及岩石破坏卸载阶段.滚刀破岩载荷和破岩体积随着贯入度、刀间距和刃宽的增加而增加;破岩比能随刃宽的增加呈先减小后增大的趋势.对于所选取的硬岩,采用13 mm刃宽滚刀破岩时比能最小,破岩效率最高;7 mm刃宽滚刀破岩时无法形成贯通岩片,相邻滚刀之间仍存在岩脊,破岩效率较低.

关键词：滚刀刃宽 Cohesive模型线切割试验破岩载荷破岩效率

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Autoimmune hepatitis-primary biliary cirrhosis concurrent with biliary stricture after liver transplantation

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World Journal of Gastroenterology 2015年第7期21卷 2236-2241页

作者： yong-Zhen Kang Xiao-Ye sun yi-He Liu Zhong-Yang Shen First Central clinic of Tianjin Medical University Department of Organ Transplantation Tianjin First Center Hospital Tianjin Key Laboratory of Organ Transplantation

Although the development of de novo autoimmune liver disease after liver transplantation(LT)has been described in both children and adults,autoimmune hepatitis(AIH)-primary biliary cirrhosis(PBC)overlap syndrome has rarely been seen in liver transplant ***,we report a 50-year-old man who underwent LT for decompensated liver disease secondary to alcoholic *** liver function tests became markedly abnormal 8 years after *** autoimmune serological tests were positive for anti-nuclear and antimitochondrial antibodies,and a marked biochemical response was observed to a regimen consisting of prednisone and ursodeoxycholic acid added to maintain immunosuppressant *** biopsy showed moderate bile duct lesions and periportal lymphocytes infiltrating along with light fibrosis,which confirmed the diagnosis of AIH-PBC overlap *** believe that this may be a case of post-LT de novo AIH-PBC overlap syndrome;a novel type of autoimmune overlap syndrome.

关键词： Autoimmune liver disease Autoimmune hepatitis Prim

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Impact of genetic alterations on mTOR-targeted cancer therapy

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Chinese Journal of Cancer 2013年第5期32卷 270-274页

作者： Shi-yong sun Department of Hematology and Medical Oncology Emory University School of Medicine and Winship Cancer Institute

Rapamycin and its derivatives (rapalogs) , a group of allosteric inhibitors of mammalian target of rapamycin (mTOR), have been actively tested in a variety of cancer clinical trials, and some have been approved by the Food and Drug Administration for the treatment of certain types of cancers. However, the single agent activity of these compounds in many tumor types remains modest. The mTOR axis is regulated by multiple upstream signaling pathways. Because the genes (e.g., PIK3CA, KRAS, PTEN, and LKB1) that encode key components in these signaling pathways are frequently mutated in human cancers, a subset of cancer types may be addicted to a given mutation, leading to hyperactivation of the mTOR axis. Thus, efforts have been made to demonstrate the potential impact of genetic alterations on rapalogbased or mTOR-targeted cancer therapy. This review will primarily summarize research advances in this direction.

关键词： mTOR 靶向治疗基因变异肿瘤癌症治疗信号传导通路信号转导途径雷帕霉素

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Photo-induced macro/mesoscopic scale ion displacement in mixed-halide perovskites:ring structures and ionic plasma oscillations

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Light(Science & Applications) 2022年第10期11卷 2388-2398页

作者： Xiaoxiao sun yong Zhang Weikun Ge Laboratory for Thin Films and Photovoltaics Empa-Swiss Federal Laboratories for Materials Science and Technology8600 DuebendorfSwitzerland Department of Information Technology and Electrical Engineering ETH Zurich8093 ZurichSwitzerland Institute of Ion Beam Physics and Materials Research Helmholtz-Zentrum Dresden-RossendorfDresden 01328Germany Department of Electrical and Computer Engineering The University of North Carolina at CharlotteCharlotteNC 28223USA Department of Physics Tsinghua UniversityBeijing 10084People's Republic of China

Contrary to the common belief that the light-induced halide ion segregation in a mixed halide alloy occurs within the illuminated area,we find that the Br ions released by light are expelled from the illuminated area,which generates a macro/mesoscopic size anion ring surrounding the illuminated area,exhibiting a photoluminescence *** intriguing phenomenon can be explained as resulting from two counter-balancing effects:the outward diffusion of the light-induced free Br ions and the Coulombic force between the anion deficit and surplus *** after removing the illumination,the macro/mesoscopic scale ion displacement results in a built-in voltage of about 0.4 V between the ring and the ***,the displaced anions return to the illuminated area,and the restoring force leads to a damped ultra-low-frequency oscillatory ion motion,with a period of about 20-30 h and lasting over 100 *** finding may be the first observation of an ionic plasma oscillation in *** understanding and controlling the"ion segregation"demonstrate that it is possible to turn this commonly viewed"adverse phenomenon"into novel electronic applications,such as ionic patterning,self-destructive memory,and energy storage.

关键词： mixed removing return

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Physics-Informed Neural Networks with Two Weighted Loss Function Methods for Interactions of Two-Dimensional Oceanic Internal Solitary Waves

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Journal of Systems Science & Complexity 2024年第2期37卷 545-566页

作者： sun Junchao CHEN yong TANG Xiaoyan School of Mathematical Sciences Key Laboratory of Mathematics and Engineering Applications(Ministry of Education)&Shanghai Key Laboratory of PMMPEast China Normal UniversityShanghai 200241China College of Mathematics and Systems Science Shandong University of Science and TechnologyQingdao 266590China

The multiple patterns of internal solitary wave interactions(ISWI)are a complex oceanic *** remote sensing techniques indirectly detect these ISWI,but do not provide information on their detailed structure and ***,the authors considered a three-layer fluid with shear flow and developed a(2+1)Kadomtsev-Petviashvili(KP)model that is capable of describing five types of oceanic ISWI,including O-type,P-type,TO-type,TP-type,and *** learning models,particularly physics-informed neural networks(PINN),are widely used in the field of fluids and internal solitary ***,the authors find that the amplitude of internal solitary waves is much smaller than the wavelength and the ISWI occur at relatively large spatial scales,and these characteristics lead to an imbalance in the loss function of the PINN *** solve this problem,the authors introduce two weighted loss function methods,the fixed weighing and the adaptive weighting methods,to improve the PINN *** successfully simulated the detailed structure and dynamics of ISWI,with simulation results corresponding to the satellite *** particular,the adaptive weighting method can automatically update the weights of different terms in the loss function and outperforms the fixed weighting method in terms of generalization ability.

关键词： Internal solitary wave interactions KP equation PINN method weighted loss function method

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Genome editing opens a new era for physiological study and directional breeding of fishes

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Science Bulletin 2017年第3期62卷 157-158页

作者： sun, yong-Hua State Key Laboratory of Freshwater Ecology and Biotechnology Institute of HydrobiologyChinese Academy of SciencesWuhan China 430072

In recent years, the whole life science community has witnessed the advance and breakthrough in the genome editing technologies, including zinc-finger nucleases （ZFNs）, transcription activator-like effector （TALE） nucleases （TALENs） and clustered, regularly interspaced, short palindromic repeats （CRISPR）-CRISPR-associated （Cas） systems （CRISPR/Cas9） [1-3]. With these tools, scientists are able to introduce site-specific modifications in the genome of a wide range of organisms from invertebrates to vertebrates.

关键词：编辑技术基因组定向育种生理学无脊椎动物鱼类位点特异性生命科学

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Thermodynamics and kinetics of extracting zinc from zinc oxide ore by the ammonium sulfate roasting method

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International Journal of Minerals,Metallurgy and Materials 2015年第5期22卷 467-475页

作者： yi sun Xiao-yi Shen Yu-chun Zhai School of Materials and Metallurgy Northeastern University

Thermodynamic analyses and kinetic studies were performed on zinc oxide ore treatment by （NH4）2SO4 roasting technology. The results show that it is theoretically feasible to realize a roasting reaction between the zinc oxide ore and （NH4）2SO4 in a temperature range of 573-723 K. The effects of reaction temperature and particle size on the extraction rate of zinc were also examined. It is found that a surface chemical reaction is the rate-controlling step in roasting kinetics. The calculated activation energy of this process is about 45.57 kJ/mol, and the kinetic model can be expressed as follows： 1 - （1 - α）1/3 = 30.85 exp（-45.57/RT）·t. An extraction ratio of zinc as high as 92% could be achieved under the optimum conditions.

关键词： zinc metallurgy extraction ammonium sulfate ore roasting thermodynamics kinetics

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A New Method for Solving Nonlinear Partial Differential Equations Based on Liquid Time-Constant Networks

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Journal of Systems Science & Complexity 2024年第2期37卷 480-493页

作者： sun Jiuyun DONG Huanhe FANG yong College of Mathematics and Systems Science Shandong University of Science and TechnologyQingdao 266590China

In this paper,physics-informed liquid networks(PILNs)are proposed based on liquid time-constant networks(LTC)for solving nonlinear partial differential equations(PDEs).In this approach,the network state is controlled via ordinary differential equations(ODEs).The significant advantage is that neurons controlled by ODEs are more expressive compared to simple activation *** addition,the PILNs use difference schemes instead of automatic differentiation to construct the residuals of PDEs,which avoid information loss in the neighborhood of sampling *** this method draws on both the traveling wave method and physics-informed neural networks(PINNs),it has a better physical ***,the KdV equation and the nonlinear Schr¨odinger equation are solved to test the generalization ability of the *** the best of the authors’knowledge,this is the first deep learning method that uses ODEs to simulate the numerical solutions of PDEs.

关键词： Nonlinear partial differential equations numerical solutions physics-informed liquid networks physics-informed neural networks

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