The processing of ceramic scaffolds using the ice-templating, or freeze casting, technique provides a relatively simple means to mimic the hierarchical design of natural materials such as nacre. In the present study, we investigated the architecture of silicon carbide (SiC) scaffolds produced by this technique over a range of cooling rates and suspension characteristics to demonstrate its versa...

background quince seed mucilage biopolymer (qsmb), famous for ameliorating coughs and controlling asthma symptoms, has not been processed by scientific methods and rules into a local oral tablet. objectives the purpose of this study was to investigate and compare the mechanical properties of qsmb with different size fractions of the mucilage powder, dried by oven or by freeze drying, to achieve...

Abstract This paper presents an improved ray casting algorithm, in order to solve the problems of powerful computing capacity and slow rendering velocity. In the course of ray casting volume rendering, an algorithm of ICT slice images original data field 2D maximum entropy threshold segmentation prior preprocessing is proposed. It is used to define the extent of threshold, and research the opti...

Volume rendering is a key technique in scientific visualization that lends itself to significant exploitable parallelism. The high computational demands of real-time volume rendering and continued technological advances in the area of VLSI give impetus to the development of special-purpose volume rendering architectures. This paper presents and characterizes three recently developed volume rend...

A three-dimensional porous architecture makes an attractive electrode structure, as it has an intrinsic structural integrity and an ability to buffer stress in lithium-ion batteries caused by the large volume changes in high-capacity anode materials during cycling. Here we report the first demonstration of a SnO2-coated macroporous Cu foam anode by employing a facile and scalable combination of...

Porous graphene nanostructures are of great interest for applications in catalysis and energy storage. However, the fabrication of three-dimensional (3D) macroporous graphene nanostructures with controlled morphology, porosity and surface area still presents significant challenges. Here we introduce an ice-templated self-assembly approach for the integration of two-dimensional graphene nanoshee...

Directional freeze-casting – a process used to create foams with elongated, aligned pores applied so far exclusively for ceramics – is demonstrated for titanium foams. An aqueous slurry of <45 lm titanium powders was directionally solidified, resulting in a powder preform consisting of elongated, aligned dendrites of pure ice separated by interdendritic regions with high powder content. After f...

BACKGROUND Mild solubilization of inclusion bodies has attracted attention in recent days, with an objective to preserve the existing native-like secondary structure of proteins, reduce protein aggregation during refolding and recovering high amount of bioactive proteins from inclusion bodies. RESULTS Here we presented an efficient method for mild solubilization of inclusion bodies by using a...

Accurate casting to achieve a passive prosthesis is very important. Also, fabrication of a restoration because of the proximity implants remains a challenge. In this case report, one approach to this problem is discussed. Also, the goal of this study is analyzing fabrication an implant level cast with the help of angled abutment and acrylic resin cap. The advantage of the mentioned method is th...