A new polymer polyferrocarbosilane (PFCS) was synthesized using polydimethylsilane and ferrocene as the raw materials. The polymer was then melt-spun into continuous PFCS fibers, cured in air and heat-treated in a nitrogen atmosphere up to 1300 , a kind of Fe-containing SiC fibers were finally obtained. The SiC(Fe) ceramic fibers were combined with epoxy resin and a structural material was prep...

it is possible to develop new biodegradable active packaging by coating biopolymers on paper-based packaging material and also incorporating proper antimicrobial agents into coating structure. in this study bacterial contamination of two commercial cardboard were evaluated.in order to manufacture an appropriate antibacterial packaging material, coating of chitosan-poly vinyl alcohol blends with...

present research involves the complete simulation of pultrusion manufacturing process of glass/polyester composites. for that purpose, the curing process is divided to two liquid and gel-solid phases. the physical characteristics of the resin consist of specific heat, viscosity and coefficient of heat transfer changes with variations of temperature and increasing the degree of curing process (α...

A wide variety of everyday objects consist of textile fibers (clothes, wall paper, chairs). Their primary purpose is structural and aesthetic. Fibers can have added functions by the integration of computing power into the material that forms them. The purpose of the Fiber Computing project is to integrate this new dimension of functionality into fibers, thus turn everyday objects into artifacts...

PLATE 95 Existence and nature of the cement substance which binds the collagenous fibers and fibrils have been widely discussed. I t has been shown that this material , probably mucoproteins, can be, at least partially, removed from the fibers not only by salts such as KC1 and CaC12, but also b y treating the fibers with trypsin (13). A cement substance which is probably of a nature similar to ...

Many surgical techniques are available for bridging peripheral nerve defects. Autologous nerve grafts are the current gold standard for most clinical conditions. In selected cases, alternative types of conduits can be used. Although most efforts are today directed towards the development of artificial synthetic nerve guides, the use of non-nervous autologous tissue-based conduits (biological tu...

Background: Presurigical planning for glioma tumor resection and radiotherapy treatment require proper delineation of tumoral and peritumoral areas of brain. Diffusion tensor imaging (DTI) is the most common mathematical model applied for diffusion weighted MRI data. Neurite orientation dispersion and density imaging (NODDI) is another mathematical model for DWI data modeling.Objective: We stud...

1. Abstract The aim of this work is to perform hierarchical optimization [1] in laminated composite structures, considering simultaneously macroscopic and microscopic levels in the design of the structure and its material. In the macroscopic level, the optimization algorithm cares with orientations and fiber volume fractions of unidirectionally reinforced composite material layers. In the micro...

Sir, The spectrum of psychodermatology is quite wide. One of the more controversial diseases in this group is Morgellons disease; where the patient usually a female, complaints of fibers of glass/other material coming out of her skin. We would like to report a case of Morgellons disease, which responded well to antipsychotic medications. A 50-year-old married female presented with complaints of...

A finite strain model for the mechanical degradation of composite materials with multiple families of fine reinforcing fibers is developed and studied. At any instant of time the matrix material may or may not be degrading with all, some, or none of the interpenetrating fibers also undergoing degradation. This multi-component description of damage is governed by coupled differential equations w...