نتایج جستجو برای: sharp roll off

تعداد نتایج: 239699  

The final hot strip profile is a superposition of the roll initial crown, the roll bending and flattening crown, the roll wearing crown and the roll thermal crown. In this research, linear regression models are proposed to predict the roll force, the roll wearing crown and the roll thermal crown using experimental data provided by Mobarake Steel Complex (MSC). The short beam theory based on ela...

1999
Limin Wang

We derive an expression for the non-Gaussian cosmic-microwave-background (CMB) statistic I3 l defined recently by Ferreira, Magueijo, and Górski in terms of the slow-roll-inflation parameters ǫ and η. This result shows that a nonzero value of I3 l in COBE would rule out single-field slow-roll inflation. A sharp change in the slope of the inflaton potential could increase the predicted value of ...

Journal: :iranian endodontic journal 0
saeed asgary department of endodontics, dental research center, dental school, shahid beheshti university of medical sciences, tehran, iran. [email protected] masoud parirokh department of endodontics, dental school, kerman university of medical sciences, kerman, iran mohammad jafar eghbal department of endodontics, dental research center, dental school, shahid beheshti university of medical sciences, tehran, iran jamileh ghoddusi department of endodontics, dental school, mashad university of medical sciences, mashad, iran

introduction: the purpose of this study was to evaluate the morphologic surface of gutta­percha cones after cutting with different methods. materials and methods: the apical 3 millimeters of forty standardized, gutta-percha cones size 40 were cut off using scissors or a scalpel against a glass slab. the samples were then examined under scanning electron microscopy (sem) for topographic deformit...

2000
Limin Wang Marc Kamionkowski

We derive an expression for the non-Gaussian cosmic microwave background ~CMB! statistic I l 3 defined recently by Ferreira, Magueijo, and Górski in terms of the slow-roll-inflation parameters e and h . This result shows that a nonzero value of I l 3 in COBE would rule out single-field slow-roll inflation. A sharp change in the slope of the inflaton potential could increase the predicted value ...

2009
Cora Dvorkin

We develop a variant of the generalized slow roll approach for calculating the curvature power spectrum that is well-suited for order unity deviations in power caused by sharp features in the inflaton potential. As an example, we show that predictions for a step function potential, which has been proposed to explain order unity glitches in the CMB temperature power spectrum at multipoles l = 20...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2009
Boxun Leng Zhengzhong Shao Gijsbertus de With Weihua Ming

Common cotton textiles are hydrophilic and oleophilic in nature. Superhydrophobic cotton textiles have the potential to be used as self-cleaning fabrics, but they typically are not super oil-repellent. Poor oil repellency may easily compromise the self-cleaning property of these fabrics. Here, we report on the preparation of superoleophobic cotton textiles based on a multilength-scale structure...

2013
Edward Namkyu Cho Yong Hyeon Shin Ilgu Yun

An analytical 2D model of subthreshold current (I DSsub), subthreshold swing (S sub), and threshold voltage (V TH) roll-off with a variation of channel doping concentration (N A) for symmetric double gate (DG) metal-oxide-semiconductor field-effect transistor (MOSFET) is presented. First of all, the channel potential is obtained by solving the 2D Poisson's equation with the help of the evanesce...

2017
Cesar A. Azurdia-Meza Ismael Soto Shaharyar Kamal

In this manuscript, the sinc exponential pulse (SEP) is evaluated at the transmitter and receiver side by using different metrics. The impulse response of the SEP is derived, analysed, and compared with the traditional RC pulse. The SEP is characterized by introducing two new design parameters, adding degrees of freedom to optimize the pulse for a certain transmission scheme and roll-off factor...

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