نتایج جستجو برای: modified fr ii

تعداد نتایج: 828936  

2017
Chenyang Zhang Jincheng Wang

A series of flame-retardant nanocomposites were established based on compounding of natural rubber (NR) and dendrimer modified flame-retardant organic montmorillonite (FR-DOMt). The merits of these nanocomposites were focused on their better mechanical and flame-retardant properties. X-ray diffractometer (XRD) together with scanning electron microscopy (SEM) and transmission electron microscopy...

Journal: :J. Applied Mathematics 2008
Shou-qiang Du Yuan-yuan Chen

A modified spectral PRP conjugate gradient method is presented for solving unconstrained optimization problems. The constructed search direction is proved to be a sufficiently descent direction of the objective function. With an Armijo-type line search to determinate the step length, a new spectral PRP conjugate algorithm is developed. Under some mild conditions, the theory of global convergenc...

Journal: :Journal of Physics: Conference Series 2021

2001
Gabriele Ghisellini Annalisa Celotti

In the radio – host galaxy optical luminosity plane FR I and FR II radio–galaxies are clearly divided. Since the optical luminosity of an elliptical galaxy is an indication of the mass of its central black hole, we propose that the FR I–FR II dividing luminosity is a function of the mass of the black hole powering the active nucleus. Furthermore, as the radio power gives an estimate of the tota...

Journal: :تحقیقات آب و خاک ایران 0
علی اصغر ذوالفقاری استادیار گروه بیابان زدایی دانشکدة کویرشناسی دانشگاه سمنان محمدتقی تیرگر سلطانی کارشناس ارشد گروه علوم و مهندسی خاک پردیس کشاورزی و منابع طبیعی دانشگاه تهران محمدرضا یزدانی استادیار گروه بیابان زدایی دانشکدة کویرشناسی دانشگاه سمنان الهام سلیمانی ساردو دانشجوی کارشناسی ارشد بیابان زدایی دانشگاه سمنان

in the present study, five log-normal models, normal model (n), and two four- parameter models namely gompertz (g) and fredlund (fr) were tested on 71 psd data from 10 soil textural classes. the jaky (j) and fr models had the smallest and largest r2 values for all of the soils, respectively. the results of comparing the n and simple log-normal (sl) models showed that the accuracy of the n model...

2008
YA-DI XU XINWU CAO QINGWEN WU

In the frame of unification schemes for radio-loud active galactic nuclei (AGNs), FR I radio galaxies are believed to be BL Lacertae (BL Lac) objects with the relativistic jet misaligned to our line of sight, and FR II radio galaxies correspond to misaligned radio quasars. The Ledlow-Owen dividing line for FR I/FR II dichotomy in the optical absolute magnitude of host galaxy–radio luminosity (M...

Journal: :European journal of orthodontics 2014
Fernanda Angelieri Lorenzo Franchi Lucia H S Cevidanes Marco A Scanavini James A McNamara

AIM To examine the long-term effects induced by treatment with the function regulator (FR-2) appliance 7 years post-treatment compared with untreated class II subjects. SUBJECTS AND METHODS The FR-2 sample was collected prospectively and comprised 17 subjects (10 boys and 7 girls, mean age 10.8 years) who were treated with the FR-2 appliance for 1.7 years and re-evaluated 7.1 years after trea...

2010
Xuhua Wang Sheng Yao Hyo-Yang Ahn Yuanwei Zhang Mykhailo V. Bondar Joseph A. Torres Kevin D. Belfield

Narrow dispersity organically modified silica nanoparticles (SiNPs), diameter ~30 nm, entrapping a hydrophobic two-photon absorbing fluorenyl dye, were synthesized by hydrolysis of triethoxyvinylsilane and (3-aminopropyl)triethoxysilane in the nonpolar core of Aerosol-OT micelles. The surface of the SiNPs were functionalized with folic acid, to specifically deliver the probe to folate receptor ...

Journal: :Biomedical microdevices 2015
Jiangtao Chu Torgny Undin Sara Bergström Lind Klas Hjort Andreas P Dahlin

There is growing interest in using microdialysis (MD) for monitoring larger and more complex molecules such as neuropeptides and proteins. This promotes the use of MD membranes with molecular weight cut off (MWCO) of 100 kDa or above. The hydrodynamic property of the membrane goes to ultrafiltration or beyond, making the MD catheters more sensitive to pressure. In the meantime, despite the larg...

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