نتایج جستجو برای: px biharmonic type operators

تعداد نتایج: 1432091  

Journal: :Croatian medical journal 2002
Mehmet Isler Namik Delibas Muhittin Guclu Fatih Gultekin Recep Sutcu Mehmet Bahceci Ali Kosar

AIM To test whether the activities of erythrocyte superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) can be affected by oral iron (OI) treatment, parenteral iron (PI) treatment, and parenteral iron treatment with vitamin E supplementation (PIE) in iron deficiency anemia. METHODS Twenty-eight patients with iron deficiency anemia and 18 healthy controls were included in the study. A...

Journal: :Numerische Mathematik 2022

Abstract We develop a general framework for construction and analysis of discrete extension operators with application to unfitted finite element approximation partial differential equations. In methods so called cut elements intersected by the boundary occur these must in stabilized some way. Discrete provides such stabilization modification space close boundary. More, precisely is extended fr...

Journal: :J. Applied Mathematics 2012
Hee Sun Jung Ryozi Sakai

2010
G Baruch E Mandelbaum

We present new singular solutions of the biharmonic nonlinear Schrödinger equation (NLS) iψt(t,x)− ψ + |ψ |2σψ = 0, x ∈ R , 4/d σ 4. These solutions collapse with the quasi-self-similar ring profile ψQB , where |ψQB(t, r)| ∼ 1 L2/σ (t) QB ( r − rmax(t) L(t) ) , r = |x|, L(t) is the ring width that vanishes at singularity, rmax(t) ∼ r0L(t) is the ring radius, and α = (4 − σ)/(σ (d − 1)). The blo...

Journal: :Int. J. Comput. Math. 2014
Ming Li Ghizlane Amazzar Ahmed Naji C. S. Chen

Biharmonic equation is one of the most existing operator in many areas, especially in fluid and solid mechanics, but difficult to solve due to the fourth order derivatives in the differential equation. In this paper we deal with the use of the local particular solution method to solve the two-dimensional biharmonic equation in a bounded region. The technique is based on decoupling the biharmoni...

Journal: :Optics express 2008
Askin Kocabas Gulay Ertas S S Senlik Atilla Aydinli

Surface-enhanced Raman Scattering (SERS) of rhodamine 6G (R6G) adsorbed on biharmonic metallic grating structures was studied. Biharmonic metallic gratings include two different grating components, one acting as a coupler to excite surface plasmon polaritons (SPP), and the other forming a plasmonic band gap for the propagating SPPs. In the vicinity of the band edges, localized surface plasmons ...

Journal: :Molecular biology and evolution 2008
Supriya V Kadam Sigrun Wegener-Feldbrügge Lotte Søgaard-Andersen Gregory J Velicer

Evolutionary trait losses can be restored by direct reversion or by compensatory pathways. Upon starvation, the bacterium Myxococcus xanthus develops into spore-bearing fruiting bodies, but this ability can be rapidly lost during evolution. Some developmentally defective strains of M. xanthus "cheat" on proficient strains during development by superior sporulation in mixed cultures. Here, we ex...

2008
Nathan T. Ihle Robert Lemos David Schwartz Junghwan Oh Robert J. Halter Peter Wipf Lynn Kirkpatrick Garth Powis

The phosphatidylinositol 3-kinase (PI3K)/Akt signaling cascade is an important component of the insulin signaling in normal tissues leading to glucose uptake and homeostasis and for cell survival signaling in cancer cells. Hyperglycemia is an on-target side effect of many inhibitors of PI3K/Akt signaling including the specific PI3K inhibitor PX-866. The peroxisome proliferator-activated recepto...

2000
Robert G. Clapp

Each of these problems used a 2-D steering filter. Fomel (1999) introduced a method to construct a 3-D steering filter. Fomel formed a 3-D steering filter operator by first convolving two 2-D operators. To obtain a minimum-phase filter he performed spectral factorization for each dip component (px , py) pair in the data, significantly increasing the cost of constructing the operator. In order f...

Journal: :The Journal of clinical investigation 1994
E Montaña S Bonner-Weir G C Weir

We determined the capacity of transplanted beta cells to modify their replication and mass when stimulated by changes in metabolic demand. Five groups of Lewis rats were studied: group 1 (Tx-Px) had a 95% pancreatectomy 14 d after transplantation of 500 islets; group 2 (Px-Tx) had a 95% pancreatectomy 14 d before transplantation of 500 islets; group 3 (Tx) was transplanted with 500 islets; grou...

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