نتایج جستجو برای: three phase lag model frequency equation

تعداد نتایج: 4066782  

2013
Shiowshuh Sheen Cheng-An Hwang Vijay K. Juneja

Foodborne pathogens continue to pose a potential food safety hazard in ready-to-eat (RTE) meat. Chlorine is commonly used to sanitize processing equipment where Escherichia coli O157:H7 (Ec) may survive and contaminate food products. The objective of this study was to characterize the survival behavior of Ec with different stresses on RTE meats. A multi-strain cocktail of Ec was pre-treated wit...

2000
R. Boonen P. Sas

When applying feedback control in active noise control, phase lag caused by transducer dynamics and time delay between microphones and noise sources limits the bandwidth of the controller considerably. The proposed method to increase stability is to compensate the phase lag by applying a Smith compensator. The compensator needs a model of the acoustic plant. As model, only the transducer dynami...

Journal: :Physical review 2021

There are numerous examples of studied real-world systems that can be described as dynamical characterized by individual phases and coupled in a network like structure. Within the framework oscillatory models, much attention has been devoted to Kuramoto model, which considers collection oscillators interacting through sinus function phase differences. In this paper, we draw on an extension call...

Journal: :journal of heat and mass transfer research(jhmtr) 2014
maziar dehghan hassan basirat tabrizi

this study is concerned with the prediction of particles’ velocity in a dilute turbulent gas-solidboundary layer flow using a fully eulerian two-fluid model. the closures required for equationsdescribing the particulate phase are derived from the kinetic theory of granular flows. gas phaseturbulence is modeled by one-equation model and solid phase turbulence by mlh theory. resultsof one-way and...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1382

‏‎the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...

Journal: :Fractional Calculus and Applied Analysis 2023

In this article, we study the existence and uniqueness of a weak solution to fractional single-phase lag heat equation. This model contains terms $\cal{D}_t^\alpha(u_t)$ $\cal{D}_t^\alpha u $ (with $\alpha \in(0,1)$), where $\cal{D}_t^\alpha$ denotes Caputo derivative in time constant order $\alpha\in(0,1)$. We consider homogeneous Dirichlet boundary data for temperature. rigorously show unique...

Journal: :Physical chemistry chemical physics : PCCP 2016
Suzanne K Shoffner Santiago Schnell

Fibrillogenesis, the production or development of protein fibers, has been linked to protein folding diseases. The progress curve of fibrils or aggregates typically takes on a sigmoidal shape with a lag phase, a rapid growth phase, and a final plateau regime. The study of the lag phase and the estimation of its critical timescale provide insight into the factors regulating the fibrillation proc...

2005
YASUTAKE SAEKI KIICHI SAGAWA HIROYUKI SUGA

We analyzed mechanical properties of kitten papillary muscles both at rest and in Bi + contractore by the frequency response method. Hie mosde length was perturbed sinusoidal)}, with an amplitude less than 0.3% of Lou, over a frequency range from 0.1 to 60 Hz to determine the dynamic stiffness, F(a>)/L(a>), in which F(a>) = amplitude of the force response wave, L(to) = amplitude of sinusoidal l...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده زبانهای خارجی 1392

to teach english adequately, qualified teachers are needed. unfortunately, there are still teachers who are teaching english without an academic degree in tefl. it is necessary for teachers to have a major in english to have subject knowledge, but it is not sufficient. teachers need to have an understanding of the social, cultural, moral, ethical, and pedagogical issues of education and practic...

2012
Michael Efroimsky

While the seismic quality factor and phase lag are defined solely by the bulk properties of the mantle, their tidal counterparts are determined by both the bulk properties and the size effect (self-gravitation of a body as a whole). For a qualitative estimate, we model the body with a homogeneous sphere, and express the tidal phase lag through the lag in a sample of material. Although simplisti...

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