检索结果-南通市图书馆

Plasma Science and Technology 2013年第9期15卷 900-903页

作者： H.I.A.QAZI m.SHARIF S.HUSSAIN m.a.badar H.AFZAL Department of Physics University of SargodhaSargodha 40100Pakistan Department of Physics GC UniversityFaisalabad 38000Pakistan

This paper presents the fabrication and a spectroscopic study of a stable radio- frequency dielectric barrier discharge （RF DBD） in Ar with a novel dielectric, anodic alumina, at atmospheric pressure. Dielectric electrodes are fabricated from commercially available low cost impure aluminum strips by a two-step anodization process in 0.3 m solution of oxalic acid. The discharge is found to be stable with excellent spatial uniformity for the RF input power range of 30～80 W. Excitation and rotational temperatures measured in the experiment range of 1472～3255 K and 434～484 K, respectively, as the input power changes from 30 W to 80 W. These temperature ranges are suitable for surface modification applications.

关键词： radio frequency atmospheric pressure glow discharge dielectric barrier dis-charge anodic alumina dielectric

Risk calculators and updated tools to select and plan a repeat biopsy for prostate cancer detection

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2015年第6期17卷 864-869,I0006页

作者： Igor Sorokin badar m mian Department of Urology Albany Medical College Albany NY USA.

millions of men each year are faced with a clinical suspicion of prostate cancer （PCa） but the prostate biopsy fails to detect the disease. For the urologists, how to select the appropriate candidate for repeat biopsy is a significant clinical dilemma. Traditional risk-stratification tools in this setting such as prostate-specific antigen （PSA） related markers and histopathology findings have met with limited correlation with cancer diagnosis or with significant disease. Thus, an individualized approach using predictive models such as an online risk calculator （RC） or updated biomarkers is more suitable in counseling men about their risk of harboring clinically significant prostate cancer, This review will focus on the available risk-stratification tools in the population of men with prior negative biopsies and persistent suspicion of PCa. The underlying methodology and platforms of the available tools are reviewed to better understand the development and validation of these models. The index patient is then assessed with different RCs to determine the range of heterogeneity among various RCs. This should allow the urologists to better incorporate these various risk-stratification tools into their clinical practice and improve patient counseling.

关键词： biomarkers prostate cancer repeat biopsy risk calculators

Current and emerging trends in prostate cancer immunotherapy

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2019年第1期21卷 6-11页

作者： Adam Schatz badar m mian Division of Urology Albany Medical CollegeAlbany NY 12054USA.

There have been a number of recent developments in the treatment of castration-resistant prostate cancer which seek to exploit the hormonal ***,the castration-resistant prostate cancer remains a major challenge since this is the lethal and incurable phenotype which results in tens of thousands of deaths every *** has been emerging interest in utilizing anticancer immunotherapy in prostate cancer,especially since the development of *** other prostate cancer therapeutic vaccines including autologous and allogeneic vaccines,as well as viral vector-based vaccines,have demonstrated promising results in early trials.

关键词： prostate cancer immunotherapy hormonal axis

Characterization of cytotoxicity of airborne particulates from urban areas of Lahore

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2012年第11期24卷 2028-2034页

作者： badar Ghauri m.mansha Christian Khalil Institute of Space Technology Karachi 72500Pakistan School of Risk and Safety Sciences University of New South WalesAustralia

A number of species （organic and inorganic） in airborne particulates cause the toxicity to living being. The potential of in vitro test methods were explored for toxicity assessment of trace toxic elements （inorganic species） present in ambient air on human being （lungs）. A year long sampling of airborne particles （Pm2.5） was carded （April 2008 to march 2009） in Lahore, Pakistan. A total of thirty nine samples were collected on 47 mm Zefiuor Teflon filter membranes and each was analysed to characterize for the elements： Sb, As, Be, Cd, Cr, Co, Pb, mn, Hg using ICP-mS in water extract and total acid digestate. The samples cytotoxicity was also established using lung derived cells and mTS colorimetric assays. This generated dose response curves and IC50 values for the elemental mixtures identified on the Teflon filter membrane. The results indicated that even at low concentrations airborne elemental mixtures displayed an additive toxic effect.

关键词： particulate matter trace elements in vitro toxicity

Kinetic models of natural gas combustion in an internal combustion engine

在线全文

学校读者我要写书评

暂无评论

Journal of Natural Gas Chemistry 2010年第1期19卷 6-14页

作者： m. mansha A. R Saleemi badar m. Ghauri Department of Chemical Engineering University of Engineering & Technology Lahore 54570 Pakistan SUPARCO HQs Karachi 49430 Pakistan

In this study, combustion of methane was simulated using four kinetic models of methane in CHEmKIN 4.1.1 for 0-D closed internal combustion （IC） engine reactor. Two detailed （GRImECH3.0 ＆ UBC mECH2.0） and two reduced （One step ＆ Four steps） models were examined for various IC engine designs. The detailed models （GRImECH3.0, ＆ UBC mECH2.0） and 4-step models successfully predicted the combustion while global model was unable to predict any combustion reaction. This study illustrated that the detailed model showed good concordances in the prediction of chamber pressure, temperature and major combustion species profiles. The detailed models also exhibited the capabilities to predict the pollutants formation in an IC engine while the reduced schemes showed failure in the prediction of pollutants emissions. Although, there are discrepancies among the profiles of four considered model, the detailed models （GRImECH3.0 ＆ UBC mECH2.0） produced the acceptable agreement in the species prediction and formation of pollutants.

关键词： kinetic models detailed models reduced models combustion methane IC engine

Development and testing of a detailed kinetic mechanism of natural gas combustion in internal combustion engine

在线全文

学校读者我要写书评

暂无评论

Journal of Natural Gas Chemistry 2010年第2期19卷 97-106页

作者： m.mansha A.R.Saleemi badar m.Ghauri Naveed Ramzan Department of Chemical Engineering University of Engineering & TechnologyLahore 5457Pakistan Institute of Space Technology Islamabad 44000Pakistan

A detailed chemical mechanism to describe the combustion of natural gas in internal combustion （IC） engine has been developed,which is consisting of 233 reversible reactions and 79 *** mechanism accounts for the oxidation of methane,ethane,propane and *** has been tested using IC engine model of CHEmKIN 4.1.1 and experimental *** performance of the proposed mechanism was evaluated at various equivalence ratios （φ=0.6 to φ=1.3）,initial reactor conditions （Tini=500 to 3500 ℃; Pini=1.0 to 10 atm） and engine speed （2000-7000 rpm）.The proposed kinetic mechanism shows good concordances with GRI3.0 mechanism especially in the prediction of temperature,pressure and major product species （H2O,CO2） profiles at stoichiometric conditions （φ=1.0）.The experimental results of measured cylinder pressure,species fractions were also in agreement with simulation results derived from the proposed kinetic *** proposed mechanism successfully predicts the formation of gaseous pollutants （CO,NO,NO2,NH3） in the engine *** there are some discrepancies among each simulation profile,the proposed detailed mechanism is good to represent the combustion of natural gas in IC engine.

关键词： natural gas detailed mechanism equivalence ratio pollutants emission combustion

Electrical features of radio-frequency atmospheric pressure helium discharge with and without dielectric electrodes

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2019年第2期21卷 60-67页

作者： H ASHRAF S Z A SHAH H I A QAZI m A KHAN S HUSSAIN m.a.badar S NIAZ m SHAFIQ Department of Physics University of Sargodha Department of Physics Quaid-i-Azam University

A comparative study of radio-frequency atmospheric pressure glow discharge(rf APGD)generated in helium with and without dielectric electrodes to investigate the effect of electrodes insulation on electrical features of APGD is presented. In the α mode, both the rf APGDs remain volumetric, stable and uniform. In the γ mode, the APGD without dielectric electrodes shrinks into a constricted plasma column whereas APGD with dielectric electrodes remains stable and retains the same volume without plasma constriction even at higher densities of discharge current. A comparison of electrical features of both rf APGDs in normal and abnormal glow discharge regimes is presented. In both APGDs with and without dielectric electrodes,impedance measurements have been performed and compared with equivalent circuit *** measured impedance data is found to be in good agreement with simulated data.

关键词： radiofrequency atmospheric pressure glow discharge dielectric electrodes plasma stability control

Prediction and measurement of pollutant emissions in CNG fired internal combustion engine

在线全文

学校读者我要写书评

暂无评论

Journal of Natural Gas Chemistry 2010年第5期19卷 539-547页

作者： m. mansha A. R. Saleemt Javed S. H badar m. Ghauri Department of Chemical Engineering University of Engineering ＆ Technology Lahore 5457 Pakistan Institute of Space Technology Islamabad 44000 Pakistan

In the present study, the detailed reaction mechanisms were developed and Chemkin 4.1.1 was implemented to predict the formation of pollutant species in compressed natural gas （CNG） fired internal combustion （IC） engine. The proposed mechanisms were developed by coupling the EXGAS （an automatic mechanism generation tool for alkane oxidation） mechanisms with the Leed＇s NOz mechanism （version 2.0）. The simulation results of each proposed mechanism were validated by the experimental measurements for profiles of temperature, pressure and pollutant species （CO, NOx）. The rate of production analysis of each mechanism identified the important reactions in each mechanism which contributed to the formation of pollutant species. In spite of some discrepancies, the experimental measurements indicate that mechanism-IV （consisting of 208 reactions and 78 species） showed closer agreement for each of the predicted profiles of temperature, pressure and pollutant species （CO, NOx）.

关键词： kinetic mechanism rate of production oxidation pollutant species

Assessing tourism sustainability in hill towns:Case study of Shimla,India

在线全文

学校读者我要写书评

暂无评论

Journal of mountain Science 2020年第9期17卷 2241-2261页

作者： Rukhsana N.badar Sarika P.BAHADURE Department of Architecture and Planning Visvesvaraya National Institute of TechnologySouth Ambazari RoadNagpur 440010MaharashtraIndia

Hill towns form a popular niche in tourism *** are renowned for their natural beauty and distinctive cultural *** development can lead to a loss in opportunity to access the potential of these resources or cause their *** decisions need to adopt a sustainable approach that balances tourism growth with the preservation of the natural and cultural *** present research details a comprehensive assessment tool to study the sustainability of tourism in hill towns with a focus on Shimla,a popular hill destination in *** tool specifies seven dimensions of sustainable tourism;1)Tourism Assets;2)Tourism Activity;3)Tourism Related Linkages;4)Tourism Related Leakages;5)Environmental and Social Sustainability;6)Infrastructure;and 7)*** data were collected through questionnaire surveys of local households and arriving *** survey is conducted to map built-environment and *** data were gathered from government reports and scholarly articles.A framework of indicators and sub-indicators was developed to analyze the data at two levels–city and *** the appraisal of the city provides an overall view of the performance of the tourism industry,at the ward level a comparative analysis was carried out to reveal sector related potentials and *** study reveals the imbalanced tourismconcentration in the core of the city as compared to other wards and the gap between tourist potential and infrastructure *** are addressed through planning recommendations for more balanced development with a focus on *** research helps develop a framework which paves way to sustainable tourism development in Indian hill towns.

关键词： Sustainable tourism Hill towns Tourism assets Tourism linkages Tourism leakages

Human Verification over Activity Analysis via Deep Data mining

在线全文

学校读者我要写书评

暂无评论

Computers, materials & Continua 2023年第4期75卷 1391-1409页

作者： Kumar Abhishek Sheikh badar ud din Tahir Senior member IEEESeattle98103USA Department of Software Engineering Capital University of Science and Technology(CUST)Islamabad44000Pakistan

Human verification and activity analysis(HVAA)are primarily employed to observe,track,and monitor human motion patterns using redgreen-blue(RGB)images and *** human interaction using RGB images is one of the most complex machine learning tasks in recent *** models rely on various parameters,such as the detection rate,position,and direction of human body components in RGB *** paper presents robust human activity analysis for event recognition via the extraction of contextual intelligence-based *** use human interaction image sequences as input data,we first perform a few denoising ***,human-to-human analyses are employed to deliver more precise *** phase follows feature engineering techniques,including diverse feature ***,we used the graph mining method for feature optimization and AdaBoost for *** tested our proposed HVAA model on two benchmark *** testing of the proposed HVAA system exhibited a mean accuracy of 92.15%for the Sport Videos in theWild(SVW)*** second benchmark dataset,UT-interaction,had a mean accuracy of 92.83%.Therefore,these results demonstrated a better recognition rate and outperformed other novel techniques in body part tracking and event *** proposed HVAA system can be utilized in numerous real-world applications including,healthcare,surveillance,task monitoring,atomic actions,gesture and posture analysis.

关键词： AdaBoost classification deep features mining graph mining human detection human verification