نتایج جستجو برای: rod like

تعداد نتایج: 673695  

Journal: :Vision Research 2004
I. Pinilla R. D. Lund Y. Sauvé

Although the RCS rat is widely used as a model of progressive photoreceptor loss, it is unclear how the relative rod and cone functions change with age. Rod and cone b-waves were isolated using a double flash ERG paradigm. In contrast to cones, rods never reached normal functional maturity levels, and the ERG b-wave changed from being predominantly rod-driven to being purely cone-driven by age ...

Journal: :Chimia 2013
Hannah M König Andreas F M Kilbinger

We present the solid-supported synthesis of a linear rigid rod-like tetradeca(p-benzamide) nanorod as well as a pentadeca( p -benzamide) nanorod carrying an amide N-hexyl side chain at the center of the rod (on the 8(th) amino acid of the molecule). These nanorods were conjugated with solubilizing poly(ethylene glycol) chains and their solution aggregation was investigated. Both rod-coil block ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم پایه 1393

در کار حاضر، فیلم های نازک v2o5آلاییده با سریم با تکنیک غوطه وری روش سل-ژل روی بستر شیشه ‏ای نهشته شدند. تاثیر آلایش سریم و دمای بازپخت روی ویژگی‏‎‏های ساختاری، مورفولوژی، اپتیکی فیلم ها و فعالیت کاتالیزوری آنها توسط آنالیزهایxrd ، ftir، sem، afm و طیف سنجی uv/vis مورد بررسی قرار گرفت. نتایج الگوی پراش پرتو ایکس (xrd) فیلم های نازک v2o5خالص و آلاییده با سریم بیانگر این است که در دمای ?250 فیلم ...

2015
Fangwei Si Bo Li William Margolin Sean X. Sun

A combination of physical and chemical processes is involved in determining the bacterial cell shape. In standard medium, Escherichia coli cells are rod-shaped, and maintain a constant diameter during exponential growth. Here, we demonstrate that by applying compressive forces to growing E. coli, cells no longer retain their rod-like shapes but grow and divide with a flat pancake-like geometry....

Journal: :ChemistrySelect 2023

Rod-like organometallic dithiol containing square-planar Pt(II) centers, i. e., trans,trans-[(H3COCS)Pt(PBu3)2(C≡C−C6H4−C6H4−C≡C)(PBu3)2Pt(SCOCH3)] was used as bifunctional stabilizing agent for the synthesis of Pd-, Au-, and AgNPs (MNPs). All MNPs showed diameters about 4 nm, which can be controlled by carefully modulating parameters. Covalent stabilization occurred through a single S bridge b...

Journal: :Soft matter 2012
Yasheng Yang Edward Barry Zvonimir Dogic Michael F Hagan

We combine simulations and experiments to elucidate the molecular forces leading to the assembly of two dimensional membrane-like structures composed of a one rod-length thick monolayer of aligned rods from an immiscible suspension of hard rods and depleting polymers. Computer simulations predict that monolayer membranes are thermodynamically stable above a critical rod aspect ratio and below a...

2004
I. Fatkullin V. Slastikov I. G. Kevrekidis

We study Onsager’s free energy functional for nematic liquid crystals with orientation parameter on a unit circle. For a class of interaction potentials we obtain explicit expressions for all critical points, analyze their stability, and construct the corresponding bifurcation diagram. We also derive asymptotic expansions of the equilibrium density of orientations near the critical and zero tem...

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