Nanocomposites are worn resistant materials used in cutting tool applications. The materials are composed of ultrafine powder hard phase grains surrounded by a tough binder phase carbon nanotubes (Mo2C)1-x–(TiC)x (2≤x≤4)//1Wt% SWCNTs. Composite bicarbide Mo2C-TiC was rapidly synthesised and simultaneously consolidated by field activated sintering technique (spark plasma sintering) at which the extensive volume expansion occurred as a function of the volumic fraction from 20 to 40 vol.% of TiC powders and 1 Wt.% of SWCNTs was reinforcement of the NCMC’s. The sintered powder mixture was examined by XRD patterns, the morphology of the obtained phase was observed by SEM and the phase compositions in different regions were analyzed by EDX. The composites were processed using Field Activated Sintering Technique, spark plasma sintering (SPS) at temperatures in the range of 1700-1800°C with addicting of SWCNTs. The effects of SWCNTs addition on phases morphology, microstructure hardness and fracture toughness of the nanocomposite were investigated. The best product contained 1.0 Wt% SWCNTs from (Mo2C)1-x–(TiC)x , x= 0.2 which was sintered at 1700°C, 70 MPa for 10 min, M0.8T0.2/ 1 Wt% SWCNTs exhibit a better density, highest hardness and good ductility. Relative densification was achieved 99.5 % from the theoretical and good mechanical properties like hardness and fracture toughness (KIC=5.6 Mpa m1/2) are improved. The results were confirmed using Raman scattering resonant spectroscopy. Show less

Superconductivity and magnetism were previously thought as incompatible until the discovery of some rare earth ternary compounds that shows the coexistence of superconductivity and magnetism. In some of the recently discovered iron based layered superconductors superconductivity and diamagnetic order system are coexist. That occurs in only 11 and 122 family. The present works we examine the possibility of coexistence of superconductivity and disorder of magnetic spin is called spin glass when freeze the system that can show the superconductivity and spin glass coexist. In this present work we can examine the possibility of coexistence of superconductivity and spin glass in detailed 11 family of Fe1+ySexTe1−x compound. We show that spin glass like behavior is present in FST for x = 0.1 - 0.15 we present evidence form magnetization measurement and characterized the short-range order with neutron scattering. One of our main results is that the short-range order is structural as well as magnetic order. The factor of magnetic order exchange in long range depend on temperature, pressure, number of doping and other external factor discussed it. We found mathematical expression for superconductor transition TC, spin glass temperature TgSusceptibility x(q), and retardation time τ using for born approximation and digamma function depend on wave vector(q) and cut off frequency(ω) in the region coexistence of superconductivity and spin glass in Fe1+ySexTe1−xcompound. Aim: To improve the coexistence of superconductivity and spin glass and to examine the associated Factor of electron doping and temperature in experimental and theoretical aspect of their coexistence. Show less

The composites of Cu, Carbonyl iron (CI), carbon nanofiber (CNF), graphite nanoflake (GNF)/polypyrrole (PPy) and [(Cu-CI-CNF-GNF) 0.5-PAA]-PPy0.5 were synthesized via different methods by in-situ polymerization on the surface of nanoparticles (NPs) with core-shell structure. This paper describes a method for polyacrylic acid (PAA) coating of NPs in aqueous solution. Then PPy coating was performed by template polymerization on NPs-PAA. Morphology, magnetic and conductivity properties were observed via scanning electron microscopy (SEM), vibrating sample magnetometer (VSM) and four probe method, respectively. The microwave characterization of nanocomposite was evaluated through arch test based on a network analyzer. The PPy nanocomposites possessed the excellent microwave multi absorbers properties in 2-18 GHz. It was also found that nanocomposites with 50% w/w and light weight exhibit good microwave absorbing properties in 2-3 GHz and 5-14 GHz frequency, so can be used to cellphone, radio frequency and radar shielding. Show less

Cholecalciferol (vitamin D3) is used nowadays in nutraceuticals regarding the prevention and treatment of vitamin D deficiency and associated diseases. This study was done to analyse the effect of the Trivedi Effect® - Energy of Consciousness Treatment on the physicochemical, thermal, and spectral properties of cholecalciferol using PSA, PXRD, DSC, TGA/DTG, FT-IR, and UV-Vis analysis. For this study, the cholecalciferol sample was divided into control/ untreated and Biofield Energy Treated vitamin D3. The treated vitamin D3 sample received Biofield Energy Treatment (the Trivedi Effect®) remotely for ~3 minutes by Mr. Mahendra Kumar Trivedi, who was located in the USA, while the test samples were located in the research laboratory in India. The treated sample was designated as the Biofield Energy Treated sample. The PSA analysis showed that the particle size values at d10, d50, d90, and D(4, 3) of the treated sample were significantly decreased by 5.80%, 16.49%, 17.52%, and 16.23%, respectively compared to the control sample. However, the specific surface area of the treated cholecalciferol was significantly increased by 7.26% compared to the control sample. Besides, the PXRD analysis revealed that the relative intensities regarding the characteristic diffraction peaks in the treated sample were significantly altered from -42.56% to 22.42%, along with -41.69% to 72.71% alterations in the crystallite sizes, compared with the control sample. Also, the treated sample showed 2.80% decrease in the average crystallite size. The DSC analysis showed a slight increase (0.24%) in the melting point of the treated sample along with 3.68% increase in the latent heat of fusion (ΔH) compared to the control sample. Also, the decomposition temperature of the treated sample was decreased by 0.29%, whereas the ΔH was increased by 5.79%, compared to the control sample. Moreover, the TGA/DTG analysis revealed the significant decrease in weight loss in the 1st and 3rd step of degradation of the treated sample by 18.58% and 89.81%, respectively, along with 1.83% increase in the maximum thermal degradation temperature compared with the control sample. Overall, the thermal stability of the treated cholecalciferol sample was observed to be increased in comparison to the control sample. Thus, the Trivedi Effect® might be used to produce a different polymorph of cholecalciferol, which possesses the improved qualities in terms of appearance, dissolution, absorption, bioavailability, and thermal stability as compared with the untreated sample. Thus, the Biofield Energy Treated cholecalciferol might be used in designing of better nutraceutical and pharmaceutical formulations possessing improved therapeutic response regarding the treatment of vitamin D deficiency associated diseases. Show less