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作者： arun kumar gupta 郑州大学

学位级别：硕士

ObjectiveTuberculous pleurisy is one of the most common pleural disease usually develops soon after infection. Tuberculous pleurisy can result in clinical symptoms, pleural fibrosis and pleural thickening. Compared to thoracentesis and puncture the traditional methods of treating tuberculous pleurisy, continuous drainage method was used and compare with the steroids. Few reports were about thoracentesis to treat tuberculous pleurisy but the purpose of our study is to compare the continuous pleural drainage method with or without steroids.MethodRetrospective study of 45 cases with pleural effusion was treated from May 2000 to July 2006 in the Department of Respiratory Medicine of the First Affiliated Hospital of Zhengzhou University by pleural drainage method in addition to antituberculosis chemotherapy. The 28 Cases were cured by continuous drainage method and 17 cases were treated by drainage plus steroids. All the patients were treated by antituberculosis chemotherapy （ATC）.ResultFrom the experiment, we find that the patients with the tuberculous pleurisy getting treatments with the drainage method with steroids have no beneficial effect on the patients' outcomes, in compared to the patients treated by drainage method without steroids. Continuous drainage method was an effective way to treat tuberculous pleurisy. In hospital, the duration between drainage group （12.68±7.20 days） and in drainage plus steroids （12.68±3.67 days） is no difference （P=0.767）. Drainage per day in drainage group is （302.00±268.80 ml） more than drainage plus steroids group （172.35±149.95 ml） but the difference in statistics was not significant （P=0.069） here. Days of drainage in drainage group （6.5±3.2 days） and in drainage plus steroids （6.59±2.35 days） have no difference （P=0.922）. But compared with traditional puncture method, the amount of fluid drainage per day was increased and the number of days in hospital was

关键词： Pleural effusion tuberculous continuous fine tube drainage steroids

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Vibration of Visco-Elastic Parallelogram Plate with Parabolic Thickness Variation

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Applied Mathematics 2010年第2期1卷 128-136页

作者： arun kumar gupta Anuj kumar Yogesh kumar gupta 不详

The main objective of the present investigation is to study the vibration of visco-elastic parallelogram plate whose thickness varies parabolically. It is assumed that the plate is clamped on all the four edges and that the thickness varies parabolically in one direction i.e. along length of the plate. Rayleigh-Ritz technique has been used to determine the frequency equation. A two terms deflection function has been used as a solution. For visco-elastic, the basic elastic and viscous elements are combined. We have taken Kelvin model for visco-elasticity that is the combination of the elastic and viscous elements in parallel. Here the elastic element means the spring and the viscous element means the dashpot. The assumption of small deflection and linear visco-elastic properties of “Kelvin” type are taken. We have calculated time period and deflection at various points for different values of skew angles, aspect ratio and taper constant, for the first two modes of vibration. Results are supported by tables. Alloy “Duralumin” is considered for all the material constants used in numerical

关键词： Vibration Parallelogram Plate Visco-Elastic Mechanics Parabolic Thickness Aspect Ratio

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Quantification of 17-desacetyl norgestimate in human plasma by liquid chromatography–tandem mass spectrometry (LC–MS/MS) and its application to bioequivalence study

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Journal of Pharmaceutical Analysis 2015年第2期5卷 93-100页

作者： Ashish Saxena arun kumar gupta V.Praveen kumar M.Sundaramoorthi Nainar Manoj Bob Ravisekhar Kasibhatta Bioanalytical Research Department Lupin Bio-Research Center Faculty of Pharmacy Pacific UniversityP.B.-12 Pacific Hills Airport Road Pratap Nagar Extension DebariUdaipur 313024 Rajasthan State India Faculty of Science Pacific UniversityP.B.-12 Pacific Hills Airport Road Pratap Nagar Extension Debari Udaipur 313024 Rajasthan State India

A rapid and sensitive ultra-performance liquid chromatography–tandem mass spectrometry（UPLC–MS/MS） method was developed and validated for the estimation of 17-desacetyl norgestimate in human plasma using solid-phase extraction technique. 17-desacetyl norgestimate D6 was used as the internal standard. Simple gradient chromatographic conditions and mass spectrometric detection enabled accurate and precise measurement of 17-desacetyl norgestimate at sub-picogram levels. The proposed method was validated for a linear range of 20–5000 pg/m L with a correlation coefficient Z 0.9988. The intra-run and inter-run precision and accuracy were within 10%. The overall recoveries for 17-desacetyl norgestimate and 17-desacetyl norgestimate D6 were 96.30% and 93.90%, respectively. The total run time was 4.5 min. The developed method was applied for the determination of the pharmacokinetic parameters of 17-desacetyl norgestimate following a single oral administration of a norgestimate and ethinyl estradiol0.250 mg/0.035 mg tablets in 35 healthy female volunteers.

关键词： 17-desacetyl norgestimate UPLC–MS/MS Human plasma

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Effect of Non-Homogeneity on Thermally Induced Vibration of Orthotropic Visco-Elastic Rectangular Plate of Linearly Varying Thickness

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Applied Mathematics 2010年第4期1卷 326-333页

作者： arun kumar gupta Pooja Singhal 不详

The analysis presented here is to study the effect of non-homogeneity on thermally induced vibration of orthotropic visco-elastic rectangular plate of linearly varying thickness. Thermal vibrational behavior of non-homogeneous rectangular plates of variable thickness having clamped boundary conditions on all the four edges is studied. For non–homogeneity of the plate material, density is assumed to vary linearly in one direction. Using the method of separation of variables, the governing differential equation is solved. An approximate but quite convenient frequency equation is derived by using Rayleigh-Ritz technique with a two-term deflection function. Time period and deflection at different points for the first two modes of vibration are calculated for various values of temperature gradients, non- homogeneity constant, taper constant and aspect ratio. Comparison studies have been carried out with non-homogeneous visco-elastic rectangular plate to establish the accuracy and versatility.

关键词： Non-Homogeneous Orthotropic Visco-Elastic Variable Thickness Rectangular Plate Vibration Thermal Gradient

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Thermal Effect on Free Vibration of Non-Homogeneous Orthotropic Visco-Elastic Rectangular Plate of Parabolically Varying Thickness

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Applied Mathematics 2010年第6期1卷 456-463页

作者： arun kumar gupta Pooja Singhal 不详

A simple model presented here is to study the thermal effect on vibration of non-homogeneous orthotropic visco-elastic rectangular plate of parabolically varying thickness having clamped boundary conditions on all the four edges. For non-homogeneity of the plate material, density is assumed to vary linearly in one direction. Using the separation of variables method, the governing differential equation has been solved for vibration of non-homogeneous orthotropic viscoelastic rectangular plate. An approximate frequency equation is derived by using Rayleigh-Ritz technique with a two-term deflection function. Results are calculated for time period and deflection at different points, for the first two modes of vibration, for various values of temperature gradients, non-homogeneity constant, taper constant and aspect ratio and shown by graphs.

关键词： Thermal Gradient Vibration Non-Homogeneous Orthotropic Visco-Elastic Rectangular Plate Variable Thickness

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Study the Thermal Gradient Effect on Frequencies of a Trapezoidal Plate of Linearly Varying Thickness

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Applied Mathematics 2010年第5期1卷 357-365页

作者： arun kumar gupta Pragati Sharma 不详

In this paper, effect of thermal gradient on vibration of trapezoidal plate of varying thickness is studied. Thermal effect and thickness variation is taken as linearly in x-direction. Rayleigh Ritz technique is used to calculate the fundamental frequencies. The frequencies corresponding to the first two modes of vibrations are obtained for a trapezoidal plate for different values of taper constant, thermal gradient and aspect ratio. Results are presented in graphical form.

关键词： Frequencies Trapezoidal Plate Linearly Thickness Thermal Gradient

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Secure and resilient improved image steganography using hybrid fuzzy neural network with fuzzy logic

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Journal of Safety Science and Resilience 2024年第1期5卷 91-101页

作者： Sachin Dhawan Hemanta kumar Bhuyan Subhendu kumar Pani Vinayakumar Ravi Rashmi gupta arun Rana Alanoud Al Mazroa Dorset College King George BlvdSurreyBritish ColumbiaCanada Department of Information Technology Vignan’s Foundation for ScienceTechnology and Research(Deemed to be University)Andhra PradeshIndia Krupajal Computer Academy Biju Patnaik University of Technology(BPUT)Rourkela 751002India Center for Artificial Intelligence Prince Mohammad Bin Fahd UniversityKhobarSaudi Arabia NSUT East Campus(Formerly AIACTRDelhi 110031India(Affiliated to Guru Gobind Singh Inderaprastha University))Dwarka 110078India Department of Computer Science and Engineering Galgotias College of Engineering and Technology Greater Noida 201310Uttar PradeshIndia Department of Information Systems College of Computer and Information SciencesPrincess Nourah bint Abdulrahman University(PNU)P.O.Box 84428Riyadh 11671Saudi Arabia

The exponential growth in communication networks,data technology,advanced libraries,and mainly World Wide Web services has played a pivotal role in facilitating the retrieval of various types of information as ***,this progress has also led to security concerns related to the transmission of confidential ***,safeguarding these data during communication through insecure channels is crucial for obvious *** emergence of steganography offers a robust approach to concealing confidential information,such as images,audio tracks,text files,and video files,in suitable media carriers.A novel technique is envisioned based on back-propagation *** to the proposed method,a hybrid fuzzy neural network(HFNN)is applied to the output obtained from the least significant bit substitution of secret data using pixel value dif-ferences and exploiting the modification *** simulation and test results,it has been observed that the proposed methodology achieves secure steganography and superior visual *** the experiments,we observed that for the secret image of the cameraman,the PSNR&MSE values of the proposed technique are 61.963895 and 0.041361,respectively.

关键词： Image enhancement Image processing Steganography Deep learning Fuzzy neural combination

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Imaging and interventions in hilar cholangiocarcinoma: A review

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World Journal of Radiology 2015年第2期7卷 28-44页

作者： Kumble Seetharama Madhusudhan Shivanand Gamanagatti arun kumar gupta Department of Radiodiagnosis All India Institute of Medical Sciences

Hilar cholangiocarcinoma is a common malignant tumor of the biliary tree. It has poor prognosis with very low 5-year survival rates. Various imaging modalities are available for detection and staging of the hilar cholangiocarcinoma. Although ultrasonography is the initial investigation of choice, imaging with contrast enhanced computed tomography scan or magnetic resonance imaging is needed prior to management. Surgery is curative wherever possible. Radiological interventions play a role in operable patients in theform of biliary drainage and/or portal vein embolization. In inoperable cases, palliative interventions include biliary drainage, biliary stenting and intra-biliary palliative treatment techniques. Complete knowledge of application of various imaging modalities available and about the possible radiological interventions is important for a radiologist to play a critical role in appropriate management of such *** review the various imaging techniques and appearances of hilar cholangiocarcinoma and the possible radiological interventions.

关键词： Cholangiocarcinoma Biliary malignancy Imaging Biliary intervention Computed tomography Magnetic resonance imaging

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A comprehensive review of rectangular duct solar air heaters featuring artificial roughness

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Clean Energy 2024年第5期8卷 186-217页

作者： Ravi Shankar Rajeev kumar arun kumar Pandey Deep Singh Thakur Department of Mechanical Engineering Rajkiya Engineering College BandaUttar Pradesh 210201India Department of Mechanical Engineering Institute of Engineering&TechnologyLucknowUttar Pradesh 226021India Department of Mechanical Engineering Bundelkhand Institute of Engineering&TechnologyJhansiUttar Pradesh 284128India

Solar air heaters(SAHs)are widely used solar thermal systems with applications in diverse ***,its effectiveness is re-strained by low convective heat transfer(HT)coefficients at the absorber plate,leading to inefficient HT,and the elevated temperature of the absorber plate causes significant heat losses,reducing thermal *** study addresses these challenges by introducing ribs or roughness on the absorber plate creating turbulence in the airflow,resulting in significant *** research inves-tigates various rib configurations,the influence of rib parameters,performance methods,and arrangements to evaluate their HT and friction *** these rib configurations,a comparative analysis is done on various factors such as the Nusselt number ratio,thermal enhancement factor,friction factor ratio,and thermal efficiency to optimize distinct roughness parameters and rib ar-rangement *** study also provides valuable recommendations from existing literature,offering insights into the effective design,prospects,and implementation of SAH systems.

关键词： solar air heater artificial roughness low heat transfer heating solar energy

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Diffusion weighted imaging: Technique and applications

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World Journal of Radiology 2016年第9期8卷 785-798页

作者： Vinit Baliyan Chandan J Das Raju Sharma arun kumar gupta Department of Radiology All India Institute of Medical Sciences

Diffusion weighted imaging(DWI) is a method of signal contrast generation based on the differences in Brownian motion. DWI is a method to evaluate the molecular function and micro-architecture of the human body. DWI signal contrast can be quantified by apparent diffusion coefficient maps and it acts as a tool for treatment respon-se evaluation and assessment of disease progression. Ability to detect and quantify the anisotropy of diffusion leads to a new paradigm called diffusion tensor imaging(DTI). DTI is a tool for assessment of the organs with highly organised fibre structure. DWI forms an integral part of modern state-of-art magnetic resonance imaging and is indispensable in neuroimaging and oncology. DWI is a field that has been undergoing rapid technical evolution and its applications are increasing every day. This review article provides insights in to the evolution of DWI as a new imaging paradigm and provides a summary of current role of DWI in various disease processes.

关键词： Diffusion weighted imaging Diffusion tensor imaging Onco-imaging Neuro-imaging

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