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在表面活性剂驱中木质素磺酸盐作为吸附牺牲剂的评价

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石油石化节能与计量 2001年第5期17卷 1-6页

作者：鹿守亮,李道山,纪常杰,s.a.hong et al 大庆油田研究院大庆石油管理局油田发展研究中心大庆油田设计院

对在表面活性剂驱过程中木质素磺酸盐作为牺牲剂的可行性进行了研究。该技术是基于高效液相色谱 (HPLC)分析 ,来测定木质素磺酸盐和石油磺酸盐的浓度。建立木质素磺酸盐和石油磺酸盐的吸附等温线来评价木质素磺酸盐的牺牲效果。开发了... 详细信息

对在表面活性剂驱过程中木质素磺酸盐作为牺牲剂的可行性进行了研究。该技术是基于高效液相色谱 (HPLC)分析 ,来测定木质素磺酸盐和石油磺酸盐的浓度。建立木质素磺酸盐和石油磺酸盐的吸附等温线来评价木质素磺酸盐的牺牲效果。开发了一个用来描述在木质素磺酸盐存在下的离子交换的简单模型 ,这个模型中包含了阳离子与木质素磺酸盐的联系。本项研究的主要结果有四个方面。第一 ,用木质素磺酸盐预冲洗处理孔隙介质 ,可以显著地降低表面活性剂的损失 (降低量大于 50 % ) ,然而 ,当木质素磺酸盐与表面活性剂段塞混合在一起时 ,表面活性剂损失的降低就很少。第二 ,在木质素磺酸盐存在时有更多的阳离子从岩石上进行交换 ,这种阳离子交换的增强是二价阳离子与木质素磺酸盐结合的结果。第三 ,与盐水和石油磺酸盐相比 ,木质素磺酸盐会导致可溶性矿石的更大程度的溶解 ,产生了不需要的二价阳离子。第四 ,木质素磺酸盐对石油磺酸盐的耐盐度和最优矿化度的影响并不大。从这些实验室结果 ,总结出在表面活性剂驱中木质素磺酸盐是很有潜力的吸附牺牲剂

关键词：表面活性剂驱牺牲剂木质素磺酸盐离子交换矿石溶解耐盐度实验评价

在表面活性剂驱中木质素磺酸盐作为吸附牺牲剂的评价

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国外油田工程 2001年第5期17卷 1-6页

作者：鹿守亮李道山纪常杰 s.a.hong et al 大庆油田研究院大庆石油管理局油田发展研究中心大庆油田设计院

关键词：表面活性剂驱吸附牺牲剂木质素磺酸盐离子交换矿石溶解耐盐度实验评价

Acousto-optic scanning multi-photon lithography with high printing rate

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Opto-Electronic Advances 2024年第2期7卷 1-3页

作者： Minghui hong Pen-Tung sah Institute of Micro-Nano science and Technology Xiamen UniversityXiamen 361005China

As a manufacturing method that is focused on end-users,3D printing has gained a lot of attention in recent years due to its unique advantages in fabricating complex three-dimensional *** new micro-nano 3D printing methods have been developed to meet the demand for high-precision and high-yield *** them,multi-photon-photon lithography(MPL) is a promising 3D nanofabrication technology due to its capability of true 3D digital processing and nanoscale processing resolution beyond the diffraction *** has been widely used to fabricate microoptics10,11,photonic crystals12,microfluidics13,meta-surfaces14,and mechanical metamaterials15.

关键词： photon Acous scanning

R-matrix for the 8-Dimensional spin Representation of Uq(so7)

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Acta Mathematica sinica,English series 2024年第2期40卷 485-497页

作者： hong Mei HU Nai hong HU school of Mathematical sciences Suzhou University of Science and TechnologySuzhou 215009P.R.China school of Mathematical sciences MOE Key Laboratory of Mathematics and Engineering Applications&Shanghai Key Laboratory of PMMPEast China Normal UniversityShanghai 200241P.R.China

The purpose of the paper is to describe the solution to the quantum Yang-Baxter equation associated with the 8-dimensional spin representation Tsp of Uq(so7).The self-duality of Tsp and the symmetry of the corresponding braiding matrix are ***,the minimal polynomial of the braiding R-matrix of Tsp is presented explicitly in an ingenious method by taking advantage of nice features of the spin representation Tsp.

关键词： Braiding R-matrix spin module minimal polynomial

A study that redefines the concept of a well-known orchid–pollinator attraction strategy

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National science Review 2024年第5期11卷 98-99页

作者： hong Liu Department of Earth and Environment International Center for Tropical Botany Florida International University The Fairchild Tropical Botanic Garden

Zhang and collaborators [1] demonstrated that bees of the genus Ctenoplectra collect oil from the newly reported oilreward orchids of the genera Dendrobium and Galeola in Asia, and that the majority of the bees that carry out this act and pollinate the orchids are male. These are new discoveries with significant implications for biodiversity conservation.

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Optical Microsphere Nano-Imaging:Progress and Challenges

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Engineering 2024年第5期36卷 102-123页

作者： Guangxing Wu Minghui hong Department of Electrical and Computer Engineering National University of SingaporeSingapore 117576Singapore Pen-Tung sah Institute of Micro-Nano science and Technology Xiamen UniversityXiamen 361005China Innovation Laboratory for sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China

The optical diffraction effect imposes a radical obstacle preventing conventional optical microscopes from achieving an imaging resolution beyond the Abbe diffraction limit and thereby restricting their usage in a multitude of nanoscale *** the past decade,the optical microsphere nanoimaging technique has been demonstrated to be a cost-effective solution for overcoming the diffraction limit and has achieved an imaging resolution of up to about k6k8 in a real-time and label-free manner,making it highly competitive among numerous super-resolution imaging *** this review,we summarize the underlying nano-imaging mechanisms of the microsphere nanoscope and key advancements aimed at imaging performance enhancement:first,to change the working environment or modify the peripheral hardware of a single microsphere nanoscope at the system level;second,to compose the microsphere compound lens;and third,to engineer the geometry or ingredients of *** also analyze challenges yet to be overcome in optical microsphere nano-imaging,followed by an outlook of this technique.

关键词： Microsphere Nano-imaging Virtual imaging Microsphere compound lens Engineered microsphere

structural basis for polyuridine tract recognition by sARs-CoV-2 Nsp15

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Protein & Cell 2024年第7期15卷 547-552页

作者： Fumiaki Ito Hanjing Yang Z.hong Zhou Xiaojiang s.Chen Molecular and Computational Biology Department of Biological SciencesUniversity of Southern CaliforniaLos AngelesCA 90089United States Department of Microbiology Immunology and Molecular GeneticsUniversity of CaliforniaLos AngelesCA 90095United States California Nanosystems Institute University of CaliforniaLos AngelesCA90095United States Genetic Molecular and Cellular Biology ProgramKeck School of MedicineUniversity of Southern CaliforniaLos AngelesCA 90089United States Norris Comprehensive Cancer Center University of Southern CaliforniaLos AngelesCA 90089United States Center of Excellence in NanoBiophysics University of Southern CaliforniaLos AngelesCA 90089United States

Dear Editor,Coronaviruses have evolved a wide array of tactics to evade host antiviral *** host cells detect invading foreign nucleic acids including viral genome and viral replication intermediates,they activate interferon(IFN)signaling via cytoplasmic pattern recognition receptors(Kang et al.,2002;Kato et al.,2006).Remarkable stealth activities exhibited by coronaviruses are facilitated by a series of non-structural proteins(Nsps),such as Nsp15(Deng and Baker,2018;Deng et al.,2019;Hackbart et al.,2020),which is a uridine-specific endoribonuclease that mediates evasion of host detection of viral double-stranded RNA(dsRNA)(Bhardwaj et al.,2004;Deng et al.,2017;Frazier et al.,2021;Ivanov et al.,2004).Nsp15 targets a polyuridine[poly(U)]tract on the coronavirus negative strand RNA(Hackbart et al.,2020).Nsp15 limits the abundance and length of poly(U)within the negative strand RNA 5ʹ-extension by trimming down the initially synthesized poly(U)lead sequence to the optimal length that can suppress dsRNA formation but still serves as a template for poly(A)tail of the positive strand genome of the coronaviruses(Hofmann and Brian,1991).

关键词： p15 interferon template

Dynamic plugging regulating strategy of pipeline robot based on reinforcement learning

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Petroleum science 2024年第1期21卷 597-608页

作者： Xing-Yuan Miao hong Zhao College of Mechanical and Transportation Engineering China University of PetroleumBeijing102249China

Pipeline isolation plugging robot (PIPR) is an important tool in pipeline maintenance operation. During the plugging process, the violent vibration will occur by the flow field, which can cause serious damage to the pipeline and PIPR. In this paper, we propose a dynamic regulating strategy to reduce the plugging-induced vibration by regulating the spoiler angle and plugging velocity. Firstly, the dynamic plugging simulation and experiment are performed to study the flow field changes during dynamic plugging. And the pressure difference is proposed to evaluate the degree of flow field vibration. secondly, the mathematical models of pressure difference with plugging states and spoiler angles are established based on the extreme learning machine (ELM) optimized by improved sparrow search algorithm (IssA). Finally, a modified Q-learning algorithm based on simulated annealing is applied to determine the optimal strategy for the spoiler angle and plugging velocity in real time. The results show that the proposed method can reduce the plugging-induced vibration by 19.9% and 32.7% on average, compared with single-regulating methods. This study can effectively ensure the stability of the plugging process.

关键词： Pipeline isolation plugging robot Plugging-induced vibration Dynamic regulating strategy Extreme learning machine Improved sparrow search algorithm Modified Q-learning algorithm

Coupling analysis method of grouting construction with deformation response of adjacent existing tunnel

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Underground space 2024年第2期15卷 312-330页

作者： Ping-wei Jiang Zhi-hong Zhang hong Zheng Jin-kun Huang Key Laboratory of Urban security and Disaster Engineering of China Ministry of Education Beijing University of TechnologyBeijing 100124China China MCC17 Group Co.LTD MaanshanAnhui 243000China school of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

In the new tunnel under close distance through the existing tunnel risk source,the grouting scheme developed to compensate for stratum losses is still based on empirical methods,relying on the overburden thickness of existing *** can potentially lead to an excessively high or low probability of uplift of existing *** a coupled deformation analysis method between the grouting construction and adjacent existing tunnels is of great theoretical significance for developing grouting *** order to reasonably limit the design parameters of grouting construction,based on the theory of fluid–solid coupling elastic pore-column expansion and the theory of random media,the calculation method of stratum displacement which simultaneously considers the coexistence of grout compaction expansion and permeability diffusion mode is derived,and the accuracy of the calculation method is verified by engineering *** accuracy of this calculation method was verified through engineering *** with the deformation coordination condition,the existing tunnel is regarded as an elastic Euler-Bernoulli continuous beam,and the finite element coupling balance equation of the interaction between the existing tunnel and the surrounding soil is *** on this,a coupling calculation model of the grouting construction and the deformation response of the adjacent existing tunnel is *** with three times of grouting construction examples in the shield tunneling project of Beijing Metro Line 12 under the existing airport line,the reliability of the coupling calculation model to determine the grouting construction parameters is *** calculation parameters in the coupling calculation model have clear physical meanings,which can provide a theoretical basis for the grouting design of similar risk source projects.

关键词： Grouting Close-range underpass Tunnel Random medium theory Euler-Bernoulli continuous beam