نتایج جستجو برای: block

تعداد نتایج: 158694  

Journal: :physical chemistry research 2015
narges nikoofard fahimeh maghsoodi

block copolymer nano-micelles are especially important in cancer treatment because of their fine dimensions. in this article, three systems of amphiphilic copolymers with similar lengths and different ratios of the hydrophobic and hydrophilic chains are studied using implicit-solvent coarse-grained molecular dynamics simulations. the factor fphil is defined as the ratio of the number of hydroph...

Journal: :CoRR 2011
Jun Wang Gang Li Hao Zhang Xiqin Wang

Orthogonal matching pursuit (OMP) is a canonical greedy algorithm for sparse signal reconstruction. When the signal of interest is block sparse, i.e., it has nonzero coefficients occurring in clusters, the block version of OMP algorithm (i.e., Block OMP) outperforms the conventional OMP. In this paper, we demonstrate that a new notion of block restricted isometry property (Block RIP), which is ...

Journal: :British heart journal 1947
W Stokes

When a patient is suspected of having Stokes-Adams disease the electrocardiogram is of critical importance, particularly in respect of the auriculo-ventricular (A-V) conduction time. Should this not be prolonged, the possibility of paroxysmal heart block remains, although the diagnosis of Stokes-Adams disease is uncertain without some degree of heart block recorded graphically. It is not known ...

Gholamreza Bashiri seyed Majid Hashemi

A typical Iranian carbonate matrix block surrounded by an open fracture was modeled in order to understand the fracture-matrix interaction and realize how to model the interaction best. The modeling was carried out by using a fine-scaled Eclipse model in the single porosity mode (the fractures were explicitly modeled). The model was extended to a stack of 6 matrix blocks to understand block-to-...

Journal: :British heart journal 1972
M R Taylor S Godfrey

2012
Kareem Abed Marc Mugmon Majd Alfreijat Robert P. Ferguson

A case of a 71-year-old male with congenital complete heart block is discussed. Patient remained asymptomatic with stable electrocardiograms.

Journal: :Circulation 1971
S P Griffiths

Journal: :علوم و تکنولوژی پلیمر 0
محمدعلی سمسارزاده محمدرضا رستمی درونکلا

the microstructure and thermal properties of the synthesized block copolymers and terpolymers via atom transfer radical polymerization (atrp) were studied. the mole fraction of the blocks and chain length of the pvac-b-pma block copolymers were estimated with 1h nmr spectroscopy.differential scanning calorimety measurement shows two different transitions at 36°c and 8°c assigned to pvac and pma...

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