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Subsection and superposition method for reservoir formation damage evaluation of complex-structure wells

Petroleum Science 2023年第3期20卷 1843-1856页

作者： Guan-Cheng jiang Yi-Zheng Li yin-Bo He Teng-Fei Dong Ke-Ming sheng Zhe Sun Collge of Petroleum Engineering China University of Petroleum(Beijing)Bejing102249China State Key Laboratory of Petroleum Resources and Prospecting MOE Key Laboratory of Petroleum EngineeringChina Universityof Petroleum(Beijing)Beijing102249China College of Artificial Intelligence China University of Petroleum(Bejing)Beijing102249China Calgary Centre for Innovative Technology University of CalgaryCalgaryAB T2N 1N4Canada National Engineering Research Center of Oil&Gas Drilling and Completion Technology

Kinds of complex-structure wells can effectively improve production,which are widely ***,in the process of drilling and completion,complex-structure wells with long drilling cycle and large exposed area of reservoir can lead to the fact that reservoir near wellbore is more vulnerable to the working fluid invasion,resulting in more serious formation *** order to quantitatively describe the reservoir formation damage in the construction of complex-structure well,taking the inclined well section as the research object,the coordinate transformation method and conformal transformation method are given according to the flow characteristics of reservoir near wellbore in anisotropic *** the local skin factor in orthogonal plane of wellbore is *** the un-even distribution of local skin factor along the wellbore,the oscillation decreasing model and empirical equation model of damage zone radius distribution along the wellbore direction are established and then the total skin factor model of the whole well is superimposed to realize the reservoir damage evaluation of complex-structure *** the skin factor model with the production model,the production of complex-structure wells can be predicted more *** two field application cases show that the accuracy of the model can be more than 90%,which can also fully reflect the invasion characteristics of drilling and completion fluid in any well section of complex-structure wells in anisotropic reservoir,so as to further provide guidance for the scientific establish-ment of reservoir production system.

关键词： Complex-structure wells Reservoir formation damage Reservoir anisotropy Skin factor Production prediction model

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Isolated scaphoid dislocation:A case report and review of literature

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World Journal of Clinical Cases 2022年第8期10卷 2559-2568页

作者： Si-Da Liu Bao-sheng yin Feng Han Hua-Jun jiang Wei Qu Department of Orthopedics The First Affiliated Hospital of Dalian Medical UniversityDalian 116011Liaoning ProvinceChina

BACKGROUND Isolated dislocations of the scaphoid are extremely rare types of injuries,commonly associated with severe ligament disruptions,and are occasionally *** options for dislocations of the scaphoid mainly include closed reduction,with or without internal fixation,and open reduction with ligament *** SUMMARY A 59-year-old male worker sustained a twisting trauma of his right wrist,caused by a moving belt while he was operating a *** he presented at our emergency department,the patient complained of swelling,tenderness,and restriction of movement of the right *** confirmed a primary complex partial radial dislocation of the scaphoid and some chip fractures of the capitate and *** reduction with K-wire internal fixation was performed with the assistance of arthroscopy,and an excellent prognosis was *** Arthroscopy-assisted reduction is a minimally invasive method to reduce the dislocated scaphoid and maintain the blood supply.

关键词： Isolated scaphoid dislocation Classification Delayed diagnose Treatment options Wrist arthroscopy Case report

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Exploration of Strong Metal-Support Interaction in Heterogeneous Catalysts by in situ Transmission Electron Microscopy

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Chinese Journal of Chemistry 2024年第9期42卷 1004-1008页

作者： Yongjun jiang sheng Dai Key Laboratoryfor Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center Institute of Fine ChemicalsSchool of Chemistry&Molecular EngineeringEast China Universityof Science and TechnologyShanghai 200237China

The phenomenon of strong metal-support interaction(SMSI)observed in supported metal catalysts,usually accompanied by the formation of the encapsulation layer on metal nanoparticles,has attracted extensive research attention due to its significance in heterogeneous ***,great progress has been made in recent years in investigating SMSI by in situ transmission electron microscopy(TEM),along with an enhanced comprehension of the underlying mechanisms governing SMSI *** emerging topic summarizes recent progress utilizing in situ TEM to study the interaction between metal and support and the relationship between the structure and performance of the supported catalyst under reaction conditions.A brief perspective about the use of in situ TEM for further study of SMSI is also presented,showing prospects in this field that will stimulate further upsurging research in promoting the catalytic efficiency of supported catalysts.

关键词： Heterogeneous catalysis In situ TEM Strong metal-support interaction Structure changes Interfaces Structural evolution

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哲罗鱼耗氧量与体重、水温的关系

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水产学杂志 2003年第1期16卷 26-30页

作者：匡友谊尹家胜姜作发徐伟李永发中国水产科学研究院黑龙江水产研究所黑龙江哈尔滨150070

通过对 2 2 5g、 2 2 7 5g、 2 60g 3组体重范围 ,在 8℃、 1 2℃、 1 6℃、 2 0℃ 4个水温范围下的哲罗鱼耗氧量的测定 ,研究了哲罗鱼耗氧量与体重、水温的关系。结果表明 :耗氧量随着体重和水温的增加而增加 ,在 1 2℃～ 1 6℃水温范... 详细信息

通过对 2 2 5g、 2 2 7 5g、 2 60g 3组体重范围 ,在 8℃、 1 2℃、 1 6℃、 2 0℃ 4个水温范围下的哲罗鱼耗氧量的测定 ,研究了哲罗鱼耗氧量与体重、水温的关系。结果表明 :耗氧量随着体重和水温的增加而增加 ,在 1 2℃～ 1 6℃水温范围 ,温度增加 ,但耗氧率增加不显著 ,认为此水温为哲罗鱼生长的适宜水温。水温在 1 6℃时 ,耗氧量与体重的关系为 :R =0 2 962W0 90 82 (R :耗氧量 ,mg/h·尾 ,W :体重 ,g) ;在体重 2 60g时 ,耗氧量与水温的关系为 :R =1 5 496 +1 8776T (R :耗氧量 ,mg/h·尾 ,T :水温 ,℃ )。

关键词：哲罗鱼耗氧量体重水温鲑科生长发育

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Unsaturated flow and solute transport in a porous column using spherical ore particles

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International Journal of Minerals,Metallurgy and Materials 2014年第2期21卷 113-121页

作者： Xiu-xiu Miao Ai-xiang Wu Bao-hua Yang Jin-zhi Liu sheng-hua yin Hong-jiang Wang Key Laboratory of High-Efficient Mining and Safety of Metal Mines (Ministry of Education) University of Science and Technology Beijing School of Information Science and Engineering Hunan International Economics University College of Information Technology Shanghai Ocean University

This paper dealt with the development of a two-dimensional （2D） mathematical model for column leaching and confirmed the important simulation parameters through experiment. The unsaturated state of the variably saturated flow column and the solute transport of copper ions were studied during leaching. The fluid flow problem was handled using the Richards equation on the premise of an ambient pressure column air, where the van Genuchten formulas were applied to define the nonlinear relationships of pressure head with the retention and permeability properties. The ore column permeability test gave a varied hydraulic conductivity, which was analyzed in the model. In the solute transport problem, the copper ion concentration was solved using the advection-diffusion-reaction equation whose reaction term was determined by the joint analysis of experimental copper leaching rate and the shrinking core model. Particle-and column-scale leaching tests were carried out to illustrate the difference and connection of copper extraction in both processes. This fluid flow and solute transport cou-pled model was determined through the finite element method using the numerical simulation software, COMSOL Multiphysics.

关键词： mathematical models leaching unsaturated flow solute transport

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A new predictive biomarker enables more accurate PD-1 blockade therapy

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Cellular & Molecular Immunology 2021年第7期18卷 1624-1625页

作者： Kuojun Zhang sheng jiang State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry School of PharmacyChina Pharmaceutical UniversityNanjingChina

Tumor immunotherapy has revolutionized cancer treatment,with immune checkpoint blockade(ICB)therapy being the standard of care across a growing number of cancer *** targeting cytotoxic T lymphocyte-associated protein 4(CTLA-4)or programmed cell death protein 1(PD-1)/programmed cell death ligand 1(PD-L1)have exhibited durable clinical benefit in patients;however,only a subset of patients respond to these treatment modalities,and the mechanisms underlying these clinical differences in response remain *** multiple genomic and immunological features based on analysis of pretreatment tumor biopsies have shown a correlation with response to ICB therapies,robust predictive biomarkers have not yet been clearly ***,defining the mechanisms of therapeutic responses and robust biomarkers predictive of response and resistance would be beneficial to accurately stratify patients for ICB therapies and possibly to enrich patients that would benefit from those *** the significance of PD-1 in the immune response and its dual roles as both an activation and exhaustion marker,clarifying the function and mechanism of PD-1-positive tumor-infiltrating lymphocytes(TILs)in regulating antitumor immunity is highly appealing.A recent study by Kumagai et al.1 proposed that the balance between PD-1 expression in effector CD8+T cells and in regulatory T(Treg)cells in the tumor microenvironment(TME)is a more robust predictor of the clinical efficacy of PD-1 blockade therapies than other predictors,such as PD-L1 expression,tumor mutational burden(TMB)and some peripheral blood mononuclear cell(PBMC)biomarkers.

关键词： immunity enable treatment

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Multidimensional BSDEs with Weak Monotonicity and General Growth Generators

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Acta Mathematica Sinica,English Series 2013年第10期29卷 1885-1906页

作者： sheng Jun FAN Long jiang School of Mathematical Sciences Fudan University College of Sciences China University of Mining and Technology

This paper aims at solving a multidimensional backward stochastic differential equation （BSDE） whose generator g satisfies a weak monotonicity condition and a general growth condition in y. We first establish an existence and uniqueness result of solutions for this kind of BSDEs by using systematically the technique of the priori estimation, the convolution approach, the iteration, the truncation and the Bihari inequality. Then, we overview some assumptions related closely to the monotonieity condition in the literature and compare them in an effective way, which yields that our existence and uniqueness result really and truly unifies the Mao condition in y and the monotonieity condition with the general growth condition in y, and it generalizes some known results. Finally, we prove a stability theorem and a comparison theorem for this kind of BSDEs, which also improves some known results.

关键词： Backward stochastic differential equation. existence and uniqueness weak monotonicitycondition general growth condition comparison theorem

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Unconventional Fluorescent and Multi-responsive Polyethyleneimine with LCST and UCST Behavior:Synthesis,Characterization and Biological Applications

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Chinese Journal of Polymer Science 2024年第6期42卷 826-837页

作者： Feng-Ming yin Li-Li Wu Shu-sheng Li Xiao-Na Pan Xiao-Li Zhu Xu-Bao jiang Xiang Zheng Kong College of Chemistry and Chemical Engineering University of JinanJinan250022China Shandong Institute for Product Quality Inspection Jinan250102China College of Chemical Engineering Tianjin UniversityTianjin300072China

Non-aromatic fluorescent and multi-responsive materials,exhibiting inherent fluorescence emission and controlled phase change,have garnered significant attention in recent ***,the underlying interaction between their fluorescent properties and phase transition remains *** this study,we synthesized a series of catalyst-free aza-Michael addition-based polyethyleneimine(RFPEI)materials by reacting polyethyleneimine(PEI)with N-isopropyl acrylamide(NIPAM).The resulting RFPEI was comprehensively characterized,and demonstrated dual-phase transition behavior(LCST and UCST)in water,which could be finely tuned by adjusting its composition or external factors such as ***,upon UV irradiation(365 nm),RFPEI exhibited strong fluorescence *** further investigated the effects of NIPAM grafting percentage to PEI,polymer concentration,and pH on the LCST/UCST and fluorescent properties of RFPEI aqueous ***,we showcased the great potential of RFPEI as a versatile tool for physiological cell imaging,trace detection,and controlled release of *** study presents a novel class of stimuli-responsive fluorescent materials with promising applications in the field of biomedicine.

关键词： Polyethyleneimine Multi-responsiveness Intrinsic fluorescence emission Cell imaging Controlled drug release

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The effects of crop rotation combinations on the soil quality of old apple orchard

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Horticultural Plant Journal 2022年第1期8卷 1-10页

作者： Haiyan Wang Yuefan sheng Weitao jiang Fengbing Pan Mei Wang Xuesen Chen Xiang Shen Chengmiao yin Zhiquan Mao College of Horticultural Science and Engineering/State Key Laboratory of Crop Biology Shandong Agricultural UniversityTai’anShandong 271018China

This study investigated the effects of six crop rotation combinations on the soil quality of old apple orchard and seedling growth of Malus hupehensis Rehd.(apple rootstock) under pot conditions. The inhibitory effects of crops such as Allium fistulosum, Brassica juncea, and Triticum aestivum on four species of Fusarium were observed and compared in six treatments. These were continuous cropping(CK), fumigation with the methyl bromide(FM), rotating A. fistulosum only(R1), rotating A. fistulosum and T. aestivum(R2), rotating A. fistulosum, B. juncea, and T. aestivum(R3), and fallow(FC) in a year. The results showed that the biomass of Malus hupehensis Rehd. seedlings increased significantly. The root length increased and the root architecture was optimized. The respiration rate of the root system was increased by about 1 time after rotation. The treatments of R1, R2, R3, and FC increased bacterial count by 232.17%, 96.04%, 316.21%, and 60.02%, respectively. However, the fungi were reduced in varying degrees and bacteria/fungi ratio was increased by 5–10 times. The enzyme activities, p H, and organic matter were increased, but soil bulk density was decreased. Phenolic acids such as phloridzin was decreased significantly. The copy number of four Fusarium species declined by 85.59%, 74.94%, 69.68%, and 54.41% after rotating three different crops(R3 treatment). The root volatiles of three plants inhibited mycelial growth and spore germination of four Fusarium species.

关键词： Apple replant disease Rotation Malus hupehensis Rehd Seedlings Soil quality Microorganism

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Single-Channel Speech Enhancement Based on Improved Frame-Iterative Spectral Subtraction in the Modulation Domain

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China Communications 2021年第9期18卷 100-115页

作者： Chao Li Ting jiang sheng Wu School of Information and Communication Engineering Beijing University of Posts and TelecommunicationsBeijing 100876China

Aiming at the problem of music noise introduced by classical spectral subtraction,a shorttime modulation domain(STM)spectral subtraction method has been successfully applied for singlechannel speech ***,due to the inaccurate voice activity detection(VAD),the residual music noise and enhanced performance still need to be further improved,especially in the low signal to noise ratio(SNR)*** address this issue,an improved frame iterative spectral subtraction in the STM domain(IMModSSub)is *** specifically,with the inter-frame correlation,the noise subtraction is directly applied to handle the noisy signal for each frame in the STM ***,the noisy signal is classified into speech or silence frames based on a predefined threshold of segmented *** these classification results,a corresponding mask function is developed for noisy speech after noise ***,exploiting the increased sparsity of speech signal in the modulation domain,the orthogonal matching pursuit(OMP)technique is employed to the speech frames for improving the speech quality and *** effectiveness of the proposed method is evaluated with three types of noise,including white noise,pink noise,and hfchannel *** obtained results show that the proposed method outperforms some established baselines at lower SNRs(-5 to +5 dB).

关键词： short-time modulation domain single-channel speech enhancement modulation improved frame iterative spectral subtraction low SNRs

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