نتایج جستجو برای: isothermal temperature

تعداد نتایج: 463805  

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2001
J R de Almeida S G de Oliveira I L Borges J M D'Almeida

The isothermal deterministic model adherence was studied to evaluate the population dynamic of Synthesiomyia nudiseta (Diptera, Muscidae). The linear form of equation obtained for the experiments in the several phases, were for Egg: 1/D = -0.18 + 0.02. T; Larva: 1/D = -0.028 + 0.01. T; Pupa: 1/D = -0.069 + 0.01. T; and Adult: 1/D = -0.4178 + 0.02. T. In function of temperature, S. nudiseta can ...

2007
Sait Eser Karlik Gunes Yilmaz

In current high bit rate long haul transmission systems, PMD is the most important factor causing degradation in system performance. Therefore PMD compensation is an important subject for reliable high bit rate transmission systems. PMD compensation techniques require information about effects of environmental conditions on PMD. In this paper, effects of temperature on PMD performance of G.652 ...

2014
Zong Meng Lijun Yang Wenxin Geng Yubo Yao Xingguo Wang Yuanfa Liu

The isothermal and nonisothermal crystallization kinetics of monoglyceride (MAG) organogels were studied by pulsed nuclear magnetic resonance (pNMR) and differential scanning calorimetry (DSC), respectively. The Avrami equation was used to describe the isothermal crystallization kinetics and experimental data fitted the equation fairly well. Results showed that the crystal growth of MAG organog...

2002
A. Hsiao M. E. McHenry D. E. Laughlin M. J. Kramer C. Ashe T. Ohkubo

The characterization of the crystallization kinetics of an amorphous soft magnetic alloy, Fe88Zr7B4Cu1, called NANOPERM, is presented. Vibrating sample magnetometry (VSM), X-ray diffractometry, and differential scanning calorimetry have been used to observe crystallization kinetics. The VSM observations take advantage of the Curie temperature of the amorphous phase c amorphous of the NANOPERM a...

Journal: :Analytical chemistry 2007
Carolina Cardell Antonio Sánchez-Navas F José Olmo-Reyes J Daniel Martín-Ramos

This paper investigates the thermal and irradiation-dependent dehydration and kinetics occurring in Na2SO4.10H2O (mirabilite) and MgSO4.7H2O (epsomite) at room conditions by using powder X-ray thermodiffraction. An improved version of a first optically stimulated X-ray diffractometer prototype was used. Specific software for the thermodiffraction study was developed (XPowder PLUS) and a filter ...

2012
Yingying Zhao Ying Bao Jingkang Wang Sohrab Rohani

The objective of this work was to study the polymorphic transformation of carbamazepine from Form II to Form III in 1-propanol during seeded isothermal batch crystallization. First, the pure Form II and Form III were obtained and characterized. Then their solubilities and metastable zone limits were measured by in-situ attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectrosc...

2008
A. M. Dee McDougall Alan W. Hood

Mode conversion in the region where the sound and Alfvén speeds are equal is a complex process, which has been studied both analytically and numerically, and has been seen in observations. In order to further the understanding of this process we set up a simple, onedimensional model, and examine wave propagation through this system using a combination of analytical and numerical techniques. Sim...

Journal: :علوم کاربردی و محاسباتی در مکانیک 0
سید علی سجادی فر آرش کریمی پور داود طغرایی

at present study the flow and heat transfer of non-newtonian nanofluid, aqueous solution of carboxymethyl cellulose-aluminum oxide with different volume fractions of nano particles in a two dimensional microtube is simulated for the first time. slip velocity and temperature jump boundary conditions are also considered along the microtube walls. the achieved results accuracy is investigated by c...

Due to their superior properties such as high specific strength, high creep resistance and high strength at elevated temperatures, aluminum composites reinforced with alumina nano particles are widely used for advanced purposes such as aerospace and auto industries. Lack of an appropriate welding process limits their applications. Transient liquid phase (TLP) bonding is one of the state-of-the...

Journal: :Journal of food protection 2006
Greg M Burnham Melody A Fanslau Steven C Ingham

The objective of this study was to develop a predictive tool for evaluating the safety of slow cooking of pork products and identifying associated critical limits. Small-scale (25 g) ground pork isothermal inoculation studies were done to determine Salmonella serovars, Escherichia coli O157:H7, and Staphylococcus aureus estimated critical times (time until growth reached a predefined increase o...

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