نتایج جستجو برای: index of particles

تعداد نتایج: 21199031  

ژورنال: مواد پرانرژی 2012
شفیق زاده, حجت, شیخی نارانی, مجید, صابری مقدم, علی, قبادی, نرگس,

In this paper, preparation method of unsymmetrical di-methyl hydrazine with nano aluminum particles (50 and 130 nm) has been investigated. One of the important aspects of the research is the uniform dispersion of the nano particles in the fuel gel. Homogeneity of the fuel influences the quality of propellant combustion. The results showed that the combination of ultrasonic-mechanical-magnetic a...

Journal: :J. Symb. Log. 2007
Assaf Hasson Ehud Hrushovski

We construct a strongly minimal set which is not a finite cover of one with DMP. We also prove that for a strongly minimal theory T generic automorphisms exist iff T has DMP, thus proving a conjecture of Kikyo and

Journal: :Journal of the Society of Powder Technology, Japan 1991

Journal: :international journal of advanced design and manufacturing technology 0
navid bozorgan abadan branch, islamic azad university,abadan, iran maryam shafahi california state polytechnic university, pomona, california, usa

the performance of a γ-al 2 o 3 /n-decane nanofluid shell-and-tube heat exchanger in a biomass heating plant is analyzed to specify the optimum condition based on the maximum heat transfer rate and performance index for wide range of nanoparticle volume fraction (0–7%). compared with pure          n-decane, the obtained results in this research show that by using γ-al 2 o 3 /n-decane nanofluid ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کردستان - دانشکده کشاورزی و منابع طبیعی 1392

در سالیان اخیر پدیده حزن انگیز گرد و غبار گاها آسمان غرب ایران را اشغال کرده و زندگی مردم را تحت تاثیرات زیانبار خود قرار داده است. پدیده گرد و غبار که به عنوان مهمترین معضل زیست محیطی کشور در دهه اخیر قلمداد می شود واجد طیف وسیعی از خسارات و اثرات منفی است که باعث گردیده این موضوع از یک شکل محلی به بحرانی بین المللی تبدیل شود. این پایان نامه به مقایسه خصوصیات فیزیکوشیمیایی ذرات گرد و غبار در...

2017
O. Muñoz H. Volten J. W. Hovenier M. Min Y. G. Shkuratov J. P. Jalava W. J. van der Zande L. B. F. M. Waters

We present measurements of the complete scattering matrix as a function of the scattering angle of randomly oriented irregular hematite and rutile particles. The measurements were made at a wavelength of 632.8 nm in the scattering angle range from 5–174 degrees. Apart from their astronomical interest, these two samples are extremely interesting from a theoretical point of view, because they bot...

Journal: :Applied optics 1991
K A Kusters J G Wijers D Thoenes

The application of laser diffraction spectrometry to determine the size distributions of particles in the anomalous diffraction regime, i.e., particles with a refractive-index ratio close to one, has been examined. From a computer simulation, using the Mie theory and the geometrical optics approximation, it could be concluded that for suspensions with a refractive-index ratio near 1, the corres...

2002
Mark Z. Jacobson

[1] This paper describes new and modified numerical techniques for solving the sizeand time-dependent aerosol processes of nucleation, coagulation, condensation, dissolution, and reversible chemistry among multiple aerosol particle size distributions and the gas phase and over the entire relative humidity (RH) range. The techniques treat particle number, mole, and volume concentrations, solutio...

Journal: :international journal of aquatic biology 0
hamid reza esmaeili department of biology, college of sciences, shiraz university, shiraz, iran. mohinder singh johal department of zoology, panjab university, chandigarh, 160014, india.

investigation on the food and feeding habits of silver carp in gobindsgar reservoir indicated that the diet of silver carp was dominated by cyclotella spp. (diatom) followed by chlorophyceae, cyanophyceae, crustacea, dianophyceae and rotifera. the size range of cyclotella spp. varied between 5-25 µm indicating that silver carp is capable to collect the food particles smaller than distance betwe...

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