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نتایج جستجو برای extrusion

تعداد نتایج: 5431  

Vortex extrusion (VE) is a severe plastic deformation technique which is based on the synergies between high strain accumulation and high hydrostatic pressure. Such a high amount of pressure, places a mandate to seek the method for investigation of the load under processing conditions. For this, kinematically admissible velocity field and upper bound terms based on Bezier formulation are develo...

2005
Han-Xiong Huang, Song Lu, HAN-XIONG HUANG, SONG LU,

Back-propagation (BP) neural network is used to develop process models for the parison extrusion in extrusion blow molding based on experimental data. In applying the BP network, some modifications, such as using a self-adaptive learning rate coefficient, determining the number of hidden neurons through experimentation, and so on, to the original BP algorithm are carried out to speed up learnin...

1999
H. Stang, Victor C. Li,

An extrusion process especially designed for extrusion of pipes made from fiber reinforced cementitious materials has been developed at Department of Structural Engineering and Materials at the Technical University of Denmark. Engineered Cementitious Composite (ECC) materials have been developed in recent years at Department of Civil and Envirionmental Engineering, University of Michigan. These...

2011
Sandeep Singhal,

Various approaches have been adopted to address this including preparation of solid dispersions and solid solutions. Hot-melt extrusion is an efficient technology for producing solid molecular dispersions with considerable advantages over solvent-based processes such as spray drying and co-precipitation. Hot-melt extrusion has been demonstrated to provide sustained, modified, and targeted drug ...

2009
Jie Chen, Maitea Guridi, Melinda Fernyhough, Zhihua Jiang, Gary Hausman, Michael Dodson, Richard B. Russell,

Clonal cultures of pig-derived mature adipocytes are capable of dedifferentiating and forming proliferative-competent progeny cells in vitro. Initial lipid processing, is different to that observed in cultures of beef-derived adipocytes. Mature pig adipocytes extrude lipid before proliferation, whereas beef-derived adipocytes symmetrically, or asymmetrically, divide without expelling lipid. The...

2010
Shyamala Bhaskaran,

Compared to single-unit dosage forms, oral multiparticulate drug-delivery systems (e.g. pellets, granules) offer biopharmaceutical advantages in terms of a more even and predictable distribution and transportation in the gastrointestinal tract. There are different pelletization and granulation techniques available to prepare drug loaded spherical particles or granules. Extrusion Spheronization ...

2015

EPC Plants for polymer chemistry. EPC engineering made in Germany.Efficient Economic Polymerization With Low Or Zero Use Of SolventsThe online version of Polymer Extrusion by Chris Rauwendaal on ScienceDirect. Com, the worlds leading platform for high quality peer-reviewed full-text books. Entitled to full text.Polymer. This book, the materials that will be treated are confined to polymers or p...

2006
Justin R. Barone, Walter F. Schmidt, N. T. Gregoire,

Keratin obtained from poultry feathers was extruded at 120°C using a combination of glycerol, water, and sodium sulfite as processing aids. Rheological properties were assessed as a function of water, glycerol, and sodium sulfite content as well as extruder die temperature. The lowest viscosity blends at a constant feather keratin concentration of 60 wt % were found at glycerol concentrations t...

2000
L. Barthe, V. Gaildrat, R. Caubet,

This paper presents an implicit function fields based approach for the extrusion of 2-dimensional profiles. According to the fields used, the extrusion follows an implicit object shape or performs the transition between combined primitives. The 1-dimensional polynomial spline properties allow the point-by-point control of the profile. Used on the transition of combined primitives, free form fun...