نتایج جستجو برای: membranes distance

تعداد نتایج: 330699  

2012
Miguel A. Peñalva Antonio Galindo Juan F. Abenza Mario Pinar Ana M. Calcagno-Pizarelli Herbert N. Arst Jr Areti Pantazopoulou

The genetically tractable filamentous ascomycete fungus Aspergillus nidulans has been successfully exploited to gain major insight into the eukaryotic cell cycle. More recently, its amenability to in vivo multidimensional microscopy has fueled a potentially gilded second age of A. nidulans cell biology studies. This review specifically deals with studies on intracellular membrane traffic in A. ...

Journal: :Acta Materialia Transylvanica 2022

Abstract The aim of this work is to design a high-productivity, continuously operating fiber producing device utilizing the centrifugal force yield polymeric nanofibers. requirements for were 1) provide capillary-to-collector distance 50–200 mm that could be adjusted automatically, 2) allow rotational speed spinneret changed in range 0–25000 1/min and have continuous feeding. equipment will for...

ژورنال: گلجام 2006
اکبری, احمد,

New nanofiltration membranes were produced in the form of unfilled fibers through the photopolymerization method. Parastyrene sodium sulfonate was used as the vinyl monomer to reform the polysulphone ultra-filtration membranes. The modified membranes were used to purify colored solutions of three different pigments consisting acidic, reactive and direct (suitable for dyeing pile yarns and ...

   In this study, effect of asymmetric functionalized graphene oxide (Janus GO) on Young′s modulus and glass transition temperature of Polysulfone (PSf) ultrafiltration membranes was investigated. The membranes were prepared via phase inversion method and GO nanosheets were dispersed in casting solution by sonication. Results showed that the Normalized Young’s modulus (on the basis of neat ...

Journal: :Development 1993
A Wizenmann S Thanos Y von Boxberg F Bonhoeffer

In the rat, a small subpopulation of retinal ganglion cell axons forms a persistent projection to the ipsilateral half of the brain. These fibres originate almost exclusively from the ventrotemporal margin of the retina. In contrast to all other retinal axons they seem to be deflected from the midline of the optic chiasm and thereby led into the ipsilateral optic tract. In order to analyse the ...

Journal: :Biofizika 2009
N Iu Riabova M A Kiselev A M Balagurov

The hydration of model membranes based on ceramide 6 with a mixture of free fatty acids the most commonly encountered the native lipid matrix of Stratum corneum, the outermost layer of the mammalian skin has been studied by neutron diffraction. Membrane hydration with water vapour at a temperature of 25 degrees C is characterized by a small increase in the repeat distance delta d0 = 1.0 A, whic...

Journal: :The Journal of Cell Biology 1982
H Schneider M Höchli C R Hackenbrock

A low pH method of liposome-membrane fusion (Schneider et al., 1980, Proc. Natl. Acad. Sci. U. S. A. 77:442) was used to enrich the mitochondrial inner membrane lipid bilayer 30-700% with exogenous phospholipid and cholesterol. By varying the phospholipid-to-cholesterol ratio of the liposomes it was possible to incorporate specific amounts of cholesterol (up to 44 mol %) into the inner membrane...

Journal: :علوم و تکنولوژی پلیمر 0
علی اکبری تبریز، دانشگاه صنعتی سهند، دانشکده مهندسی شیمی، صندوق پستی 1996-51335 رضا یگانی تبریز، دانشگاه صنعتی سهند، دانشکده مهندسی شیمی، صندوق پستی 1996-51335 بهزاد پورعباس تبریز، دانشگاه صنعتی سهند، دانشکده مهندسی پلیمر، صندوق پستی 1996-51335 حسن حامدی سنگری تهران، شرکت ملی پالایش و پخش فرآورده های نفتی ایران، صندوق پستی 3499-15815

because most contaminants in water create strong interactions with hydrophobic surfaces, there are usually problems such as flux decline and pore blocking in polyethylene (pe) membranes due to irreversible adsorption of foulants on their intrinsic hydrophobic surface. therefore, in this work, attempts were made to improve the properties of pe membranes in terms of water flux and membrane foulin...

Journal: :Advanced materials and technologies 2021

Traditional Transwell inserts with track-etched 10 ?m thick polymer membranes have been intensively used for studying cellular barriers. However, their thickness hampers direct cell-cell interaction between the adjacent cells which has shown to critically influence barrier formation. Therefore, here effect of reduced distance by using fivefold thinner (2 ?m) optically transparent polydimethylsi...

Journal: :The Journal of chemical physics 2007
J Y Lee M Schick

We calculate the characteristic energies of fusion between planar bilayers as a function of the distance between them, measured from the hydrophobic/hydrophilic interface of one of the two nearest, cis, leaves to the other. The two leaves of each bilayer are of equal composition: 0.6 volume fraction of a lamellar-forming amphiphile, such as dioleoylphosphatidylcholine, and 0.4 volume fraction o...

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