نتایج جستجو برای: fractional flow
تعداد نتایج: 537166 فیلتر نتایج به سال:
The diffusion equations with the local and the nonlocal fractional derivatives have been used to describe the flow through disorder media. Recently, the variational iteration method is successfully developed to find approximate solutions of the two kinds of fractional differential equations. This study reveals the new development of the method and compares the applications in two types of fract...
in this paper, we prove the existence and uniqueness results to the random fractional functional differential equations under assumptions more general than the lipschitz type condition. moreover, the distance between exact solution and appropriate solution, and the existence extremal solution of the problem is also considered.
Blood Flow in the Central and Peripheral Nervous System of Dogs Using a Particle Distribution Method • In this study known activities of Sr and Yb-labeled microspheres were injected sequentially into the left ventricle of anesthetized dogs. Cardiac output was determined before and after each microsphere injection. Blood flow to brain, brain stem, spinal cord, and sciatic nerve was measured from...
the used activated carbon was derived from pine-cone and was used for the removal of acid black 1(ab1) and acid blue 113(ab113) dyes. a batch sorption study was carried out in order to obtain optimum isotherm model. the study showed the best fit of the adsorption isotherm data was obtained using the langmuir model for both dyes. the monolayer maximum saturation capacities of ab1 and ab113 dyes ...
Little doubt exists about the outcome benefit of an invasive strategy in patients with an acute coronary syndrome (ACS). Yet, once the revascularization is performed, the treatment strategy of patients admitted with an ACS is not always as straightforward in daily clinical practice as indicated in guidelines. The reasons for this are at least three-fold. First, a sizable proportion of patients ...
In this work, the fractional mathematical model of an unsteady rotational flow of Xanthan gum (XG) between two cylinders in the presence of a transverse magnetic field has been studied. This model consists of two fractional parameters α and β representing thermomechanical effects. The Laplace transform is used to obtain the numerical solutions. The fractional parameter influence has been discus...
Fractional flow reserve (FFR) has become an increasingly important index for decision making with respect to revascularization of coronary artery stenosis. It is the gold standard to indicate whether a particular stenosis is responsible for inducible ischemia and it is generally accepted that a stenosis with an ischemic value of FFR is responsible for angina pectoris and a worse outcome, and sh...
IntRoductIon In current catheter research, there are 3 main directions with respect to fractional flow reserve (FFR), including instantaneous wave‐free ratio, noninvasive measurement of FFR, and FFR transferred from coronary circulation to other ischemia‐inducing circulation. Recently, an interesting study was published, in which FFR was performed to diagnose and guide stenting in chronic mesen...
Recent studies have demonstrated the benefits of using fractional derivatives to simulate a blood pressure profile. In this work we propose combine one-dimensional model coronary flow with fractional-order Windkessel boundary conditions. This allows us obtain greater variety profiles for better personalization An algorithm parameter identification is described, which used fit measured mean valu...
background: gentamicin (gm) is one the aminoglycoside antibiotics which isroutinelyused to treatinfections gram-negative, either alone or insynergistic withbeta-lactamantibioticsused. however, frequent useleads toserious side effectssuch asrenal toxicity, ototoxicity. coenzyme q10 has antioxidant, anti-inflammatory and vasodilatory properties. according to these properties of coenzyme q10 and t...
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