نتایج جستجو برای: degenerate branching

تعداد نتایج: 48655  

Journal: :Neuron 1998
Jeffrey Milbrandt Frederic J de Sauvage Timothy J Fahrner Robert H Baloh Melanie L Leitner Malú G Tansey Patricia A Lampe Robert O Heuckeroth Paul T Kotzbauer Kelli S Simburger Judith P Golden Jamie A Davies Richard Vejsada Ann C Kato Mary Hynes Daniel Sherman Merry Nishimura Li-Chong Wang Richard Vandlen Barbara Moffat Robert D Klein Kris Poulsen Christa Gray Alain Garces Christopher E Henderson Heidi S Phillips Eugene M Johnson

A novel neurotrophic factor named Persephin that is approximately 40% identical to glial cell line-derived neurotrophic factor (GDNF) and neurturin (NTN) has been identified using degenerate PCR. Persephin, like GDNF and NTN, promotes the survival of ventral midbrain dopaminergic neurons in culture and prevents their degeneration after 6-hydroxydopamine treatment in vivo. Persephin also support...

2013
J. Francisco Leyva Carlos Malaga Ramon G. Plaza

This paper introduces a reaction-diffusion-chemotaxis model for bacterial aggregation patterns on the surface of thin agar plates. It is based on the non-linear degenerate cross diffusion model proposed by Kawasaki et al. [1] and it includes a suitable nutrient chemotactic term compatible with such type of diffusion. High resolution numerical simulations using Graphic Processing Units (GPUs) of...

2013
Olivier Garet Régine Marchand OLIVIER GARET

We study the possibility for branching random walks in random environment (BRWRE) to survive. The particles perform simple symmetric random walks on the d-dimensional integer lattice, while at each time unit, they split into independent copies according to time-space i.i.d. offspring distributions. As noted by Comets and Yoshida, the BRWRE is naturally associated with the directed polymers in r...

2006
P Hande Özdinler Jeffrey D Macklis

Corticospinal motor neurons (CSMN) are among the most complex CNS neurons; they control voluntary motor function and are prototypical projection neurons. In amyotrophic lateral sclerosis (ALS), both spinal motor neurons and CSMN degenerate; their damage contributes centrally to the loss of motor function in spinal cord injury. Direct investigation of CSMN is severely limited by inaccessibility ...

2009
Seungwon Baek

The large ratio of color-suppressed tree amplitude to color-allowed one in B → ππ decays is difficult to understand within the Standard Model, which is known as the “B → ππ puzzle”. The two tree diagrams contain the upand charm-quark component of penguin amplitude, Puc, which cannot be separated by measuring B → ππ decays alone. We show that the measurements of the branching ratio and direct CP...

Journal: :international journal of industrial engineering and productional research- 0
masoud yaghini iran university of science and technology mohsen momeni iran university of science and technology mohammadreza momeni sarmadi iran university of science and technology

the set covering problem (scp) is a well-known combinatorial optimization problem. this paper investigates development of a local branching approach for the scp. this solution strategy is exact in nature, though it is designed to improve the heuristic behavior of the mixed integer programming solver. the algorithm parameters are tuned by design of experiments approach. the proposed method is te...

Journal: :Hacettepe journal of mathematics and statistics 2021

In the paper, we first define a degenerate Pochhammer symbol by using gamma function and investigate its properties. By symbol, introduce hypergeometric function. We also Sumudu transform properties exponential Finally, give certain integral representations, derivative formulas, transforms, factional calculus applications, generating functions of

Journal: :Journal of mathematical biology 2016
Stefan A H Geritz Johan A J Metz Claus Rueffler

Over the last two decades evolutionary branching has emerged as a possible mathematical paradigm for explaining the origination of phenotypic diversity. Although branching is well understood for one-dimensional trait spaces, a similarly detailed understanding for higher dimensional trait spaces is sadly lacking. This note aims at getting a research program of the ground leading to such an under...

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