Bone is a complex porous composite structure with specific characteristics such as viscoelasticity and anisotropy, both in morphology and mechanical properties. Bone defects are regularly filled with artificial tissue grafts, which should ideally have properties similar to those of natural bone. Open cell composite foams made of bioresorbable poly(L-lactic acid) (PLA) and ceramic fillers, hydro...

The present author treated tentatively the relation between the wind speeds in the wind wave scale 3 and the surface water temperatures in an open sea using the data of oceanographical observations taken at the Ocean Weather Station " X " (39°N, 153°E) in the North Pacific Ocean in view of the foaming of sea water, and the following results were obtained : 1) The general features of the frequen...

Porous geopolymer precursors were firstly prepared by the direct foaming method using bauxite, fly ash (FA), and metakaolin (MK) as raw materials, porous mullite ceramics after ammonium ion exchange then high-temperature sintering. The effects of chemical agent concentration, ion-exchange time, sintering temperature on geopolymer-derived studied, optimal preparation parameters found. Studies ha...

------ARSTRACT-----Corn germ protein isolate (CGP[) was partially hydrolyzed with tryp~ sin and pepsin and succinylated at three levels. Various functional and electrophoretic properties of the native and modified protein were determined. Water absorption and foaming properties of COPT were improved by panial hydrolysis with trypsin: emulsifying capacity and nitrogen solubility were reduced~ oi...

Sustainability and eco-efficiency are presently directing the development of the next generation of acoustic materials. In this work, foamed cellulosepolymer microsphere (PM) hybrid materials, having sound-absorbing capability, were prepared by incorporating the PMs into cellulose fibers by dehydration and foaming processes. The evolution in morphology of PMs during foaming process was investig...

Separation of various chemical components from each otheJO is often the most difficult step in analytical procedures. The problems attached to separation become further magnified when the species concentations are extremely low. A group of techniques that has proven useful especially in dilute solutions for separating and concentrating metallic as well as nonmetallic ions and complexes, protein...

The transformation of shell eggs into safe liquid, frozen or spray-dried egg white with extended shelf life requires many technological operations that result in modifications to the egg white’s functional properties. During these processes, shear rates underwent by egg white may be responsible for part of the loss of its functional properties. The present study was aimed at measuring the effec...

The increase in the invertase activity of extracts from freshly cut potato (Solanum tuberosum L.) by "foaming," caused by selective denaturation of an endogenous invertase inhibitor, did not occur in extracts made from thin disks 2 days after slicing. Rather, foaming such extracts decreased invertase activity. Apparently, the inhibitor disappeared after slicing, and the enzyme became more labil...

The aim of this work is to produce highly porous and stable alkali-activated material (AAM) prepared from two combinations sodium (Na)- potassium (K)-based alkali solutions (NaOH/Na 2 SiO 3 KOH/K ). reactive metakaolin as precursor AAM were characterized using X-ray diffraction spectroscopy (XRD), fluorescence (XRF), aluminum nuclear magnetic resonance ( 27 Al MS-NMR), diffuse reflectance infra...