Materials Literature
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Short cellulose nanofibrils (SCNF) were investigated as a reinforcement for polyvinyl alcohol (PVA) fibers. SCNF fibers were mechanically isolated from hard wood pulp after enzymatic pretreatment. Various levels of SCNF were added to PVA and gel-spun into continuous fibers. The molecular orientation of PVA was affecte…
An alcohol thermal route has been used to synthesiz e nanoparticles lead oxide at a low temperature of 75 °C. No surfactant/stabilizing agent was employed in th is method. The PbO samples were characterized by X-ray diffraction (XRD) employed to identify the st ructural phases. X-ray diffraction studies indicate the f…
The oscillatory behavior of CNT oscillators, initially subjected to bending, is studied under constant temperature using molecular dynamics simulations. We constrain the rotational motion of the inner CNT by imposing a small bending deformation to the initial structure. Our observation suggests that this constraint do…
“Top-down” and “bottom-up” techniques are used for the fabrication of micro and nano-structured materials. These structuring techniques have been widely used, however new and more versatile techniques have been developed in order to meet the requirements for new materials. One of these new techniques allows for the fo…
To understand the fundamental reason leading to the poor stability of LaNi2.28 hydrogen storage alloy, the cycling behavior of LaNi2.28 alloy under hydrogen has been investigated. The present study describes the hydrogen-induced amorphization (HIA) of LaNi2.28 alloy. The phase composition, microstructure and morpholog…
Glasses in lead-iron phosphate (LIP) system loaded with simulated nuclear waste, were melted in the temperature range750-950 o C. Some of the LIP glasses were mixed with uranium salt. The pH determinations of the leachate solution at normal temperature show some interesting trends. Leaching study of these glasses with…
3 Abstract: Polymer blending has become a technique for providing materials with extended useful properties beyond the range that can be obtained from single polymer equivalent. The tensile strength, elongation and thermal degradation profiles of PS: PMMA blends were investigated using Tensiometric and TGA methods. Th…
The effects of the polyvinyl alcohol (PVA) concentration on mechanical properties of hydrogels based on blends of native or denatured collagen / PVA were examined. Blends of PVA with collagen were obtained by mixing the solutions in different ratios, using glycerol as a plasticizer. The solutions were cast on polystyr…
The effect of chemical nature of initial alkoxides taken for hydrolysis and calcination temperature of obtained precipitates on morphological characteristics of the final products – titanium dioxide (TD) powders are discussed in the paper. It has been shown that nature of initial titanium alkoxide influenced on the pa…
Studies to identify factors affecting the fi nal cost of the construction works. Take into account that during the performance of the work under the contract between the customer and the contractor may be circumstances that would eventually change the contract price. This is an error in the design of objects and works…
The FAIR synchrotron SIS-100 will be operated with high-intensity proton and heavy-ion beams. The collimation system should prevent beam loss induced degradation of the vacuum, activation of the accelerator structure and magnet quenches. A conventional two-stage betatron collimation system is considered for the operat…
The paper describes preparation of 17Cr-1Mo-Y2O3 ODS steel by means of mechanical alloying. The composite powder was prepared from commercially available AISI 434LHC steel powder by adding 0.25 wt.% of metallic yttrium or by adding 0.25 wt.% of yttria using high-energy ball milling in planetary mill under an air and A…
Nano-electromechanical systems (NEMS) sensors are recently used as powerful medical detectors for detection of disease. In this research paper, the modified couple stress non-classic continuum theory is applied to examine the size effect on the pull-in instability of beam-type NEMS sensor at submicron separations cons…
Electronic and structural properties of Silicon Nanowire (SiNW) when doped with Al and P atoms are obtained from simulation studies have been reviewed. The bandgap , density of states and Structural property of Sillicon Nanowire has been compared when this nanowire is doped with phosphrous and aluminium atoms. We obse…
In recent years, the iron making industry has become increasingly aware of an unwanted component in metal scrap-radioactive material. In some cases, contaminated metal consumer products were distributed internationally. To solve the problem, radiation monitoring of recycled metal scrap is being performed increasingly…
Polymer capped cadmium selenide (CdSe) nanoparticles of average sizes within quantum dot (QD) regime have been synthesized by a simple chemical route without using any complexing agent. Polyvinyl alcohol (PVA) was used as a stabilizer as well as host matrix to prevent agglomeration of nanoparticles. The growth of the…
Titanium and Ti – 6Al – 7Nb alloy biomaterials have become relatively popular for surgical implants. Plasma nitriding are commonly used for orthopaedic devices which are subjected to articulation and wear, to increase the surface hardness, and reduce the generation of wear debris. This paper aims to demonstrate the st…
In this paper, we report a comparative study on str uctural, magnetic, electric properties and stress sensitivity of the Ni 0.175 Mg 0.125 Cu 0.15 Zn 0.55 Fe 2O4 with equimolar nano composite ferrite 0.5((Ni 0.35 Cu 0.05 Zn 0.6 Fe 2O4)+ (Mg 0.25 Cu 0.25 Zn 0.5 Fe 2O4)) prepared by conventional double sintering techni…
Dielectric absorption studies of Hydrogen bonded complexes of alkyl acrylates with ortho substituted benzoic acid (2 - Fluro benzoic acid, 2 - Iodo benzoic acid, 2 - Chloro benzoic acid, 2 - Bromo benzoic acid, and 2 - Nitro benzoic acid) were studied at microwave frequency 9.43GHz in dilute solution of 1,4 - Dioxane…
The desalination behavior of calcined hydrotalcite (CHT) from seawater used to treat seawater that was subsequently subjected to zeolite treatment prior to application of irrigation water was investigated. The results revealed that CHT removed Cl–, SO42–, Mg2+ and Ca2+ from seawater, but that Na+ and K+ were almost un…