نتایج جستجو برای: date cores particles

تعداد نتایج: 325916  

2013
Ulrich Desselberger James Richards Luba Tchertanov Jean Lepault Andrew Lever Oscar Burrone Jean Cohen

Rotavirus (RV) cores were released from double-layered particles (DLPs) by high concentrations of CaCl2, purified and 'opened' by treatment with EDTA or EGTA. Under appropriate in vitro conditions DLPs have been shown to have transcriptase and 'open cores' replicase activity. Furthermore, it has been demonstrated that transcriptase activity and infectivity of native cores can be restored by tra...

2017
P. Bender L. K. Bogart O. Posth W. Szczerba S. E. Rogers A. Castro L. Nilsson L. J. Zeng A. Sugunan J. Sommertune A. Fornara D. González-Alonso L. Fernández Barquín C. Johansson

The structural and magnetic properties of magnetic multi-core particles were determined by numerical inversion of small angle scattering and isothermal magnetisation data. The investigated particles consist of iron oxide nanoparticle cores (9 nm) embedded in poly(styrene) spheres (160 nm). A thorough physical characterisation of the particles included transmission electron microscopy, X-ray dif...

Journal: :Physical review letters 2012
Richard Matthews Christos N Likos

A coarse-grained computational model is used to investigate the effect of a fluid membrane on patchy-particle assembly into biologically relevant structures motivated by viral cores and clathrin. For cores, we demonstrate a nonmonotonic dependence of the promotion of assembly on membrane stiffness. If the membrane is significantly deformable, cores are enveloped in buds, although this effect is...

Journal: :Journal of clinical pathology 1978
D S Ellis I H Simpson D P Francis J Knobloch E T Bowen P Lolik I M Deng

Electron microscopy of tissues from two necropsies carried out in the Sudan on patients with Ebola virus infection identified virus particles in lung and spleen, but the main concentrations of Ebola particles were seen in liver sections. Viral precursor proteins and cores were found in functional liver cells, often aligned in membrane-bound aggregations. Complete virions, usually found only ext...

Journal: :The EMBO journal 1992
N R Burns H R Saibil N S White J F Pardon P A Timmins S M Richardson B M Richards S E Adams S M Kingsman A J Kingsman

The virus-like particles (VLPs) of the yeast retrotransposon Ty are genetically, structurally and functionally analogous to retroviral nucleocapsids or cores. Like retroviral cores Ty-VLPs package and possibly promote the enzyme activities for reverse transcription and integration, as well as encapsulating the RNA that is the intermediate in retrotransposition. Here we show that Ty-VLPs assembl...

2010
M. K. Nkansah E. M. Shapiro

INTRODUCTION: While magnetic relaxation switches (MRSws) have been developed using iron oxide nanocrystal cores that cluster together in the presence of an extracellular stimulus [Bogdanov, et al, Mol Imaging (1) 2002], the potential of using such systems to monitor intracellular events in vivo via MRI has not been investigated to date. Granot et al [Granot et al, ISMRM, 2009] first demonstrate...

1998
Swarup Acharya Stanley B. Zdonik Thomas W. Doeppner Maurice P. Herlihy Michael J. Franklin

The increasing ability to interconnect computers through internetworking, wireless networks, high-bandwidth satellite, and cable networks has spawned a new class of information-centered applications based on data dissemination. These applications, which often serve huge client populations, employ broadcast to efficiently deliver data to the clients. In data dissemination, the data transfer is i...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور مرکز - دانشکده علوم 1391

سنتز پلیمرهای کوئوردیناسیونی جدید از لیگاندهای 2-آمینو نیکوتینیک اسید، 2-کینولین کربوکسیلیک اسید، 2-پیرازین کربوکسیلیک اسید در ابعاد توده، با روش گرایان دمایی و با استفاده از شاخه ی جانبی انجام شده است، این پلیمرها توسط روش طیف سنجی ir شناسایی و پایداری گرمایی آن ها توسط تجزیه های وزن سنجی حرارتی (tga) و تجزیه ی گرمایی تفاضلی (dta) بررسی شده است. در ادامه، ساختار این ترکیبات توسط بلورنگاری پرتو...

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