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Chinese Chemical Letters 2011年第11期22卷 1359-1362页

作者： qiang li min gu State and Local Joint Engineering Laboratory of Methane Drainage in Complex Coal Gas Seam Key Lab for the Exploitation of Southwestern Resources and the Environmental Disaster Control Engineering of Education Ministry College of Resources and Environmental Science Chongqing University Chongqing 400044 China

TeOx-SiO2 composite films having third-order nonlinearities were prepared by electrochemically induced sol-gel deposition method on ITO *** third-order optical nonlinearities of the films were measured by Z-scan *** third-order nonlinear susceptibilities（χ^（（3））） of the as-prepared films are 5.9×10^（-7） to 4.29×10^（-6）*** surface morphology and composition of the films were characterized by SEM/EDX,which identified that Te metallic particles well dispersed in TeO_x-SiO_2 gel films.

关键词： TeOx-SiO2 composite Electrochemically induced sol-gel method Third-order nonlinearities Z-scan

Dilaton Black Hole Tunneling Radiation in de Sitter Universe

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Communications in Theoretical Physics 2009年第3期51卷 453-454页

作者： li gu-qiang School of Physics Science ＆ Technology Zhanjiang Normal University Zhanjiang 524048 China

The Hawking radiation via tunneling from the dilaton black hole in de Sitter universe is investigated using Parikh Wilczek＇s method. We show that if the self-gravitational interaction and energy conservation are taken into account, the modified radiation spectrum deviates from exact thermal spectrum and satisfies the unitary theory.

关键词： tunneling radiation de Sitter universe dilaton black hole

Spin-Dependent Term of Thermodynamic Quantity Around a Black Hole

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Communications in Theoretical Physics 2008年第1期49卷 126-128页

作者： li gu-qiang Department of Physics Zhanjiang Normal College Zhanjiang 524048 China

The entropy density, energy density, pressure, and equation of state of an ideal relativistic gas around the Schwarzschild-anti-de Sitter black hole with a global monopole are investigated by using the brick-wall method. It is shown that the sub-leading term with spin-dependence exists and that the corrected expression for any spin field is very different from that for scalar field. The usual result that these thermodynamical quantities take the same forms as those in fiat spacetime holds only for the leading term.

关键词： thermodynamical quantity brick-wall method Boulware vacuum state Schwarzschild-anti-deSitter black hole with a global monopole

The influence of temperature on flow-induced forces on quartz-crystal-microbalance sensors in a Chinese liquor identification electronic-nose: three-dimensional computational fluid dynamics simulation and analysis

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Applied Mathematics and Mechanics(English Edition) 2019年第9期40卷 1301-1312页

作者： qiang li Yu gu Huatao WANG School of Automation and Electrical Engineering University of Science and Technology Beijing Beijing 100083 China Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 China Department of Chemistry Goethe-University Frankfurt Frankfurt am Main 60438 Germany

An electronic-nose is developed based on eight quartz-crystal-microbalance (QCM) gas sensors in a sensor box, and is used to detect Chinese liquors at room temperature. Each sensor is a highly-accurate and highly-sensitive oscillator that has experienced airflow disturbances under the condition of varying room temperatures due to unstable flow-induced forces on the sensors surfaces. The three-dimensional (3D) nature of the airflow inside the sensor box and the interactions of the airflow on the sensors surfaces at different temperatures are studied by computational fluid dynamics (CFD) tools. Higher simulation accuracy is achieved by optimizing meshes, meshing the computational domain using a fine unstructural tetrahedron mesh. An optimum temperature, 30 ℃, is obtained by analyzing the distributions of velocity streamlines and the static pressure, as well as the flow-induced forces over time, all of which may be used to improve the identification accuracy of the electronic-nose for achieving stable and repeatable signals by removing the influence of temperature.

关键词： computational fluid dynamics (CFD) temperature quartz-crystalmicrobalance (QCM) gas sensor electronic nose identification accuracy

Forkhead box M1 transcription factor:a novel target for pulmonary arterial hypertension therapy

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World Journal of Pediatrics 2020年第2期16卷 113-119页

作者： li gu Han-min liu Department of Pediatric Pneumology West China Second University HospitalSichuan UniversityChengduChina Key Laboratory of Birth Defects and Related Diseases of Women and Children(Sichuan University) Ministry of EducationWest China Second University HospitalSichuan UniversityNo.20Section 3Renmin South RoadWuhou DistrictChengduChina

Background Forkhead box M1(FoxM1),a member of forkhead family,plays a key role in carcinogenesis,progression,invasion,metastasis and drug *** on the similarities between cancer and pulmonary arterial hypertension,studies on the roles and mechanisms of FoxM1 in pulmonary arterial hypertension have been *** article aims to review recent advances in the mechanisms of signal transduction associated with FoxM1 in pulmonary arterial *** sources Articles were retrieved from PubMed and MEDliNE published after 1990,including-but not limited to FoxM1 and pulmonary arterial *** FoxM 1 is overexpressed in pulmonary artery smooth muscle cells in both pulmonary arterial hypertension patients and animal models,and promotes pulmonary artery smooth muscle cell proliferation and inhibits cell apoptosis via regulating cell cycle *** signaling molecules and pathways,including hypoxia-inducible factors,transforming growth factor-β/Smad,SET domain-containing 3/vascular endothelial growth factor,survivin,cell cycle regulatory genes and DNA damage response network,are reported to cross talk with FoxM1 in pulmonary arterial *** inhibitors are effective in the prevention and treatment of pulmonary arterial hypertension by inhibiting the expression and transcriptional activity of *** FoxM1 has a crucial role in the pathogenesis of pulmonary arterial hypertension and may represent a novel therapeutic *** more details of interaction between FoxM1 and other signaling pathways need to be clarified in the future.

关键词： Forkhead box M1 Proteasome inhibitor Pulmonary arterial hypertension Signaling pathway

Mean-square Stability of Stochastic Age-dependent Delay Population Systems with Jumps

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Acta Mathematicae Applicatae Sinica 2018年第1期34卷 145-154页

作者： qiang li Qi-min ZHANG Bo-qiang CAO School of Mathematics and Statistics Ningxia University Yinchuan 750021 China School of Mathematics and Information Sciences Beifang University of Nationalities Yinchuan 750021 China

In this paper, we present the compensated stochastic θ method for stochastic age-dependent delay population systems（SADDPSs） with Poisson jumps. The definition of mean-square stability of the numerical solution is given and a sufficient condition for mean-square stability of the numerical solution is derived. It is shown that the compensated stochastic θ method inherits stability property of the numerical solutions. Finally,the theoretical results are also confirmed by a numerical experiment.

关键词： stochastic age-dependent delay population systems compensated stochastic θ method poisson jumps mean-square stability

The utility of two-dimensional shear wave elastography and texture analysis for monitoring liver fibrosis in rat model

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Hepatobiliary & Pancreatic Diseases International 2021年第1期20卷 46-52页

作者： li-Hong gu guang-Xiang gu Ping Wan Feng-Hua li qiang Xia Department of liver Surgery Renji HospitalSchool of MedicineShanghai Jiaotong UniversityShanghai 200127China Department of Ultrasound Renji HospitalSchool of MedicineShanghai Jiaotong UniversityShanghai 200127China

Background:liver fibrosis is a common pathological change caused by a variety of *** diagnosis and timely treatment can reverse or delay disease progression and improve the *** study aimed to assess the potential utility of two-dimensional shear wave elastography and texture analysis in dynamic monitoring of the progression of liver fibrosis in rat ***:Twenty rats were divided into control group(n=4)and experimental groups(n=4 per group)with carbon tetrachloride administration for 2,3,4,and 6 *** liver stiffness measurement was performed by two-dimensional shear wave elastography,while the optimal texture analysis subsets to distinguish fibrosis stage were generated by *** results of elastography and texture analysis were validated through comparing with ***:liver stiffness measurement was 6.09±0.31 kPa in the control group and 7.10±0.41 kPa,7.80±0.93 kPa,8.64±0.93 kPa,9.91±1.13 kPa in the carbon tetrachloride induced groups for 2,3,4,6 weeks,respectively(Pliver *** operating characteristic curve of liver elasticity showed that the sensitivity and specificity were 95.0%and 92.5%to discriminate liver fibrosis and non-fibrosis,*** texture analysis,five optimal parameters were selected to classify liver fibrosis and ***:Two-dimensional shear wave elastography showed potential applications for noninvasive monitoring of the progression of hepatic fibrosis,even in mild *** analysis can further extract and quantify the texture features in ultrasonic image,which was a supplementary to further visual information and acquired high diagnostic accuracy for severe fibrosis.

关键词： Shear wave elastography Ultrasound Texture analysis Fibrosis Rat

Optical storage arrays: a perspective for future big data storage

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light(Science & Applications) 2014年第1期3卷 200-210页

作者： min gu Xiangping li Yaoyu Cao Centre for Micro-Photonics Faculty of ScienceEngineering and TechnologySwinburne University of TechnologyHawthornVIC 3122Australia

The advance of nanophotonics has provided a variety of avenues for light–matter interaction at the nanometer scale through the enriched mechanisms for physical and chemical reactions induced by nanometer-confined optical probes in nanocomposite *** emerging nanophotonic devices and materials have enabled researchers to develop disruptive methods of tremendously increasing the storage capacity of current optical *** this paper,we present a review of the recent advancements in nanophotonics-enabled optical storage ***,we offer our perspective of using them as optical storage arrays for next-generation exabyte data centers.

关键词： big data centers optical data storage optical storage arrays super-resolution

Adiabatic shear fracture prediction in high-speed cuttingat various negative rake angles and feeds

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Advances in Manufacturing 2018年第1期6卷 41-51页

作者： li-Yao gu min-Jie Wang School of Mechanical Engineering & State-Key Laboratoryof Traction Power Southwest Jiaotong UniversityChengdu 610031 People's Republic of China Mould & Die Research Institute School of MechanicalEngineering Dalian University of TechnologyDalian 116024 People's Republic of China

The critical characteristics of adiabatic shearfracture （ASF） that induce the formation of isolated seg-ment chip in high-speed machining was further investi-gated. Based on the saturation limit theory, combining withthe stress and deformation conditions and the modifiedJohnson-Cook constitutive relation, the theoretical predic-tion model of ASF was established. The predicted criticalcutting speeds of ASF in high-speed machining ofa hardened carbon steel and a stainless steel were verifiedthrough the chip morphology observations at various neg-ative rake angles and feeds. The influences of the cuttingparameters and thermal-mechanical variables on theoccurrence of ASF were discussed. It was concluded thatthe critical cutting speed of ASF in the hardened carbonsteel was higher than that in the stainless steel under alarger feed and a lower negative rake angle. The proposedprediction model of ASF could predict reasonable results ina wide cutting speed range, facilitating the engineeringapplications in high-speed cutting operations.

关键词： Stress wave Saturation limit Fracture Isolated segment Prediction

Torque limit-based Inertial Control Method Based on Delayed Support for Primary Frequency Control of Wind Turbines

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Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 561-570页

作者： Wei gu Zaiyu Chen Qun li minghui Yin qiang li Yun Zou School of Automation Nanjing University of Science and TechnologyNanjing 210094China State Grid Jiangsu Electric Power Co. Ltd.Research InstituteNanjing 211103China

To avoid the secondary frequency dip caused by the steep drop of the electrical power of wind turbines(WTs)at the end of frequency support stage,the torque limit-based iner-tial control(TliC)method sets the power reference as a linear function of rotor speed,rather than the step form for the step-wise inertial ***,the compensation effect on the frequency nadir(FN)caused by the load surge is weakened as the TliC power is no longer in the step ***,the maximum point of the frequency response component(FRC)contributed by TliC occurs earlier than the minimum point of FRC corresponding to the load surge,so that the FN cannot be adequately ***,this paper first investigates the relation between the peak and nadir times of FRCs stimulated by the TliC and load *** this basis,with the compensation principle of matching the peak and nadir times of FRCs,the improved TliC method based on delayed support is ***,the effectiveness of the proposed method is validated via the experiments on the test bench of wind-integrated power system.

关键词： Wind turbine frequency response component torque limit inertial control delayed support