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مقاله تحقیق پروژه دانش آموزی و دانشجوییدانلود انواع فایل
مقاله تحقیق پروژه دانش آموزی و دانشجوییFacile and low-cost method to fabricate a superhydrophobic aluminum alloy surface: towards optimum preparation conditions
Facile and low-cost method to fabricate a superhydrophobic aluminum alloy surface: towards optimum preparation conditions
Aluminum and the aluminum alloys are important and useful materials in industry with potential for enhanced applications via creating novel properties such as superhydrophobicity and self-cleaning features. In this study, an improved facile and low-cost surface treatment approach was developed to create a superhydrophobic aluminum surface. Overall, the modified aluminum substrates exhibited a satisfactory superhydrophobicity, with a static water contact angle of about 1461 and a contact angle ...
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A novel SVM-GCM model for prediction of surface tension of some ionic liquids at different temperatures
A novel SVM-GCM model for prediction of surface tension of some ionic liquids at different temperatures
In this study, a novel group contribution method (GCM) is developed to predict the surface tension of ionic liquids (ILs) using support vector machine (SVM) algorithms. A data set including 1225 experimental data for 133 ionic liquids collected from various references is used to develop and assess the predictive capability of the model. The data set covers a temperature range of 278.15 through 470.56 K and a surface tension range of 19.15 through 70.30 mN.m-1. It employs a total of 45 ...
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فیلم آموزش طراحی دسته تنیس در محیط Surface در نرم افزار Catia R21
فیلم آموزش طراحی دسته تنیس در محیط Surface در نرم افزار Catia R21
فیلم آموزش طراحی دسته تنیس در محیط Surface در نرم افزار Catia R21 23 دیقه فیلم آموزشی با کیفیت خوب جهت دریافت فایل کامل هر عنوان از طریق بخش پرداخت و دانلود در پایان معرفی هر محصول اقدام نمایید. پس از خرید علاوه بر لینک دانلود مستقیم سایت، فایل به ایمیل شما بصورت پیوست نیز ارسال خواهد ...
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Surface Production Operations VOLUME 2 Design of Oil-Handling Systems and Facilities
Surface Production Operations VOLUME 2 Design of Oil-Handling Systems and Facilities
Surface Production Operations VOLUME 2 Design of Oil-Handling Systems and Facilities Surface Production Operations VOLUME 1 Design of Oil-Handling Systems and Facilities SECOND EDITIONSurface Production OperationsVOLUME 2Design of Oil-HandlingSystems and Facilities Ken ArnoldMaurice Stewart 1999 ...
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Surface Production Operations VOLUME 1 Design of Oil-Handling Systems and Facilities
Surface Production Operations VOLUME 1 Design of Oil-Handling Systems and Facilities
Surface Production Operations VOLUME 1 Design of Oil-Handling Systems and Facilities SECOND EDITIONSurface Production OperationsVOLUME 1Design of Oil-HandlingSystems and Facilities Ken ArnoldMaurice Stewart 1999 ...
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مقاله جوشکاری Effects of Welding Parameters and Surface Pretreatments on Resistance Spot Welding of AZ31B Mg Alloy
مقاله جوشکاری Effects of Welding Parameters and Surface Pretreatments on Resistance Spot Welding of AZ31B Mg Alloy
مقاله جوشکاری با عنوان : Effects of Welding Parameters and Surface Pretreatments on ResistanceSpot Welding of AZ31B Mg Alloy Shiquan Zhou1, Lei Liu2,3, Jae Pil Jung4,*, Mok-Young Lee5, and Y. Norman Zhou3 چکیده : The resistance spot weldability of AZ31B magnesium alloy using AC (alternating current) was investigatedin this paper. The surfaces of sheet coupons were prepared by acetone cleaning (as-received) and some couponswere also cleaned with chromic acid (H2Cr2O7) ...
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Nonlinear frequency analysis of nanotubes with surface effects
Nonlinear frequency analysis of nanotubes with surface effects
In the current work we obtained exact solution for nonlinear free vibration of nanotubes (NTs) with surface effects incorporated to Euler-Bernoulli beam theory and von Karman geometric nonlinearity. We used Jacobi elliptic functions to obtain the nonlinear natural frequencies. Normalized nonlinear natural frequencies and the phase trajectory were studied with the presence of surface effects. This study might be helpful to design NT-based devices in a wide range of applications. ...
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Surface Energy Effects on Thermo-mechanical Properties of Hollow Nanospheres
Surface Energy Effects on Thermo-mechanical Properties of Hollow Nanospheres
In this research, thermal displacement and stress fields in an initially stress-free hollow nanosphere due to constant temperature changes are analyzed according to linear theory of thermoelasticity. Surface effects are considered because of large surface-to-volume ratio in nanoscales. Closed form solutions are derived and results are demonstrated with numerical examples to examine the effects of size and surface energy. It is shown that thermal displacement and stress components are extremely ...
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STUDIES ON IN VITRO SURFACE STERILIZATION AND ANTIOXIDANTS
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ترجمه فارسی متن در محصول بعدی
خرید و دانلود محصول-
1394/03/26کشاورزی
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