In this paper, we conduct research on the electrical business logistics system optimization model based on the evolutionary gameand node analysis. For warehouse layout is not reasonable, do not have a high level of th...In this paper, we conduct research on the electrical business logistics system optimization model based on the evolutionary gameand node analysis. For warehouse layout is not reasonable, do not have a high level of the storage technology, automated storage utilization rateis low, the lack of warehouse management personnel, to optimize the storage management mechanism, the need to pay attention to the followingprinciples clear the optimization goal, optimization model of the real can type, accurate real-time operational data, data of complete integration,earnestly implement scheme, practical optimization algorithm, instant effective optimization scheme, solid support professionals, scalabilityoptimization process, the overall return on investment evaluation. To achieve this goal, this paper proposes the new countermeasures that will bemeaningful.展开更多
Objective To investigate the risk factors with lymph node metastatic recurrence in patients with N0 esophageal cancer after Ivor-Lewis Esophagectomy. Methods The subjects were 82 patients with pN0 esophagea cancer who...Objective To investigate the risk factors with lymph node metastatic recurrence in patients with N0 esophageal cancer after Ivor-Lewis Esophagectomy. Methods The subjects were 82 patients with pN0 esophagea cancer who underwent Ivor-Lewis esophagectomy from January 2001 to January 2005. By using RT-PCR,VEGF C mRNA was detected in tumor issues,and Mucin (MUC1) mRNA was detected in lymph nodes. The Kaplan-Meier method was used to calculate the survival展开更多
This paper, taking the distance between the piezoelectric ceramic center and the displacement node location of the transducer as a parameter, investigates the relation of characteristic parameters of transducer, such ...This paper, taking the distance between the piezoelectric ceramic center and the displacement node location of the transducer as a parameter, investigates the relation of characteristic parameters of transducer, such as force factor, equivalent resistance, potential maximum electroacoustical efficiency, and loading performance, to the displacement node location. Some design considerations about the selection of node location are noted .展开更多
Objective To identify risk factors of lymph node metastasis in superficial esophageal squamous cell carcinoma(ESCC),and to provide evidence for treatment choice under endoscope.Methods From January 2007 to December 20...Objective To identify risk factors of lymph node metastasis in superficial esophageal squamous cell carcinoma(ESCC),and to provide evidence for treatment choice under endoscope.Methods From January 2007 to December 2011,285 patients with pathologically diagnosed ESCC who received surgery and had clear record of lymph nodes resection were enrolled.The clinical pathological data of these patients were analyzed。展开更多
To address the persistent challenge of dynamic mismatch between wellbore lifting capacity and reservoir fluid supply,and to establish a robust optimization framework for drainage operations in high-water-cut tight san...To address the persistent challenge of dynamic mismatch between wellbore lifting capacity and reservoir fluid supply,and to establish a robust optimization framework for drainage operations in high-water-cut tight sandstone gas reservoirs,this study systematically investigates the graded optimization and dynamic adaptation of drainage gas recovery technologies.Production data from a representative tight gas field were first employed to forecast reservoir performance.The predictive reliability was rigorously validated through high-precision history matching,thereby providing a quantitatively consistent foundation for subsequent wellbore optimization.Building on this characterization,a coupled simulation framework was developed that integrates wellbore multiphase flow modeling with nodal analysis based on the Inflow Performance Relationship,IPR,and the Vertical Lift Performance,VLP.This coordinated approach enables comprehensive evaluation of process adaptability and dynamic optimization of foam-assisted drainage,mechanical pumping,and jet pumping systems under evolving water-gas ratio,WGR conditions.The results reveal that a progressively increasing water-gas ratio is the dominant factor driving the transition from chemically assisted drainage methods to mechanically enhanced lifting technologies.A distinct quantitative threshold is identified at WGR≈0.002,beyond which mechanical intervention becomes more effective and economically justified.For mechanical pumping and jet pumping systems,a parameter inversion optimization strategy constrained by the target bottomhole flowing pressure,Pwf,is proposed to ensure stable production while maintaining reservoir drawdown control.In particular,the nozzle-to-throat area ratio of the jet pump is identified as the key governing parameter influencing entrainment capacity and lifting efficiency.Moreover,a configuration characterized by small pump diameter,long stroke length,and low operating speed is demonstrated to satisfy drainage requirements while mitigating torque fluctuations,enhancing volumetric efficiency,and improving pump fillage stability.展开更多
Background Lymph node ratio （LNR） has recently been reported as a potential prognostic marker in many malignant diseases. We aimed to analyze the potential prognostic effect of LNR on hypopharyngeal squamous cell ca...Background Lymph node ratio （LNR） has recently been reported as a potential prognostic marker in many malignant diseases. We aimed to analyze the potential prognostic effect of LNR on hypopharyngeal squamous cell carcinoma （HPSCC） after neoadjuvant therapy in our institution.展开更多
文摘In this paper, we conduct research on the electrical business logistics system optimization model based on the evolutionary gameand node analysis. For warehouse layout is not reasonable, do not have a high level of the storage technology, automated storage utilization rateis low, the lack of warehouse management personnel, to optimize the storage management mechanism, the need to pay attention to the followingprinciples clear the optimization goal, optimization model of the real can type, accurate real-time operational data, data of complete integration,earnestly implement scheme, practical optimization algorithm, instant effective optimization scheme, solid support professionals, scalabilityoptimization process, the overall return on investment evaluation. To achieve this goal, this paper proposes the new countermeasures that will bemeaningful.
文摘Objective To investigate the risk factors with lymph node metastatic recurrence in patients with N0 esophageal cancer after Ivor-Lewis Esophagectomy. Methods The subjects were 82 patients with pN0 esophagea cancer who underwent Ivor-Lewis esophagectomy from January 2001 to January 2005. By using RT-PCR,VEGF C mRNA was detected in tumor issues,and Mucin (MUC1) mRNA was detected in lymph nodes. The Kaplan-Meier method was used to calculate the survival
文摘This paper, taking the distance between the piezoelectric ceramic center and the displacement node location of the transducer as a parameter, investigates the relation of characteristic parameters of transducer, such as force factor, equivalent resistance, potential maximum electroacoustical efficiency, and loading performance, to the displacement node location. Some design considerations about the selection of node location are noted .
文摘Objective To identify risk factors of lymph node metastasis in superficial esophageal squamous cell carcinoma(ESCC),and to provide evidence for treatment choice under endoscope.Methods From January 2007 to December 2011,285 patients with pathologically diagnosed ESCC who received surgery and had clear record of lymph nodes resection were enrolled.The clinical pathological data of these patients were analyzed。
基金supported by the Major Science and Technology Project of PetroChina Company Limited“Research on Key Technologies for Enhancing Recovery in Tight Sandstone Gas Reservoirs”,specifically under its third sub-project:“Research on Integrated Fracturing,Drainage,and Production Technology to Enhance Single-Well Production in Water-Bearing Gas Reservoirs”(Grant number:2023ZZ25YJ03).
文摘To address the persistent challenge of dynamic mismatch between wellbore lifting capacity and reservoir fluid supply,and to establish a robust optimization framework for drainage operations in high-water-cut tight sandstone gas reservoirs,this study systematically investigates the graded optimization and dynamic adaptation of drainage gas recovery technologies.Production data from a representative tight gas field were first employed to forecast reservoir performance.The predictive reliability was rigorously validated through high-precision history matching,thereby providing a quantitatively consistent foundation for subsequent wellbore optimization.Building on this characterization,a coupled simulation framework was developed that integrates wellbore multiphase flow modeling with nodal analysis based on the Inflow Performance Relationship,IPR,and the Vertical Lift Performance,VLP.This coordinated approach enables comprehensive evaluation of process adaptability and dynamic optimization of foam-assisted drainage,mechanical pumping,and jet pumping systems under evolving water-gas ratio,WGR conditions.The results reveal that a progressively increasing water-gas ratio is the dominant factor driving the transition from chemically assisted drainage methods to mechanically enhanced lifting technologies.A distinct quantitative threshold is identified at WGR≈0.002,beyond which mechanical intervention becomes more effective and economically justified.For mechanical pumping and jet pumping systems,a parameter inversion optimization strategy constrained by the target bottomhole flowing pressure,Pwf,is proposed to ensure stable production while maintaining reservoir drawdown control.In particular,the nozzle-to-throat area ratio of the jet pump is identified as the key governing parameter influencing entrainment capacity and lifting efficiency.Moreover,a configuration characterized by small pump diameter,long stroke length,and low operating speed is demonstrated to satisfy drainage requirements while mitigating torque fluctuations,enhancing volumetric efficiency,and improving pump fillage stability.
文摘Background Lymph node ratio （LNR） has recently been reported as a potential prognostic marker in many malignant diseases. We aimed to analyze the potential prognostic effect of LNR on hypopharyngeal squamous cell carcinoma （HPSCC） after neoadjuvant therapy in our institution.
