Tellurite glass systems in the form of [ZnO]x [(TeO2)0.7-(PbO)0.3]1-x with x = 0.15, 0.17, 0.20, 0.22 and 0.25 mol% were prepared using melt quenching technique. XRD samples have been measured for all samples. Both FTIR (280–4000 cm−1) UV-Vis (200–800 nm) spectra measured. Optical band gap refractive index calculated every sample. Density glass, molar volume oxygen packing density (OPD) obtained. Values direct, indirect ranged found range 3.41–3.94 eV 2.40–2.63 increasing ZnO concentration....

This paper presents the electromagnetic interference properties of multi-walled carbon nanotubes (MWCNTs) as a novel nano-reinforcement filler in poly (lactic acid) (PLA)/poly (ethylene glycol) (PEG) polymer matrix that was prepared via melt blending mode. Plasticization PLA first carried out by PEG, which overcomes its brittleness problem, order to enhance flexibility. A waveguide adapter technique used measure dielectric εr, and S-parameters reflection (S11) transmission (S21)...

Passive radiation shielding has gained prominence in space technology due to satellite malfunction and destruction by high-energy beta particles low Earth orbit (LEO). This paper describes the synthesis characterization of a novel composite material composed aluminum oxide (Al2 O3 ), hexagonal boron nitride (h-BN), high-density polyethylene (HDPe) reinforced with Doum fiber. MULSES mechanical properties exhibited tensile strength 25 MPa, hardness 85.7 Hv, impact energy absorption 23.721 J,...

Satellites in space are vulnerable to high-energy electrons above that can damage their electronic systems. To curtail this challenge, a new multi-layer system is synthesized from biomass and geological ores characterized for mechanical, thermal as well gamma beta radiation shielding efficiencies. The system, Di-layer Satellite Electronic Shielding System (DiLSES), featuring an innovative, light weight, two-layer material composite made low atomic number labeled which arranged two...

In this study, a nanocomposite of reduced graphene oxide (RGO) nanofiller-reinforcement poly(lactic acid) (PLA)/poly(ethylene glycol) (PEG) matrix was prepared via the melt blending method. The flexibility PLA improved by polymer with PEG plasticizer as second polymer. To enhance electromagnetic interference shielding properties nanocomposite, different RGO wt % were combined PLA/PEG blend. Using Fourier-transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy...

The density of nanofluids is an important thermophysical property whose value required to evaluate various heat-transfer parameters such as the Reynolds number, Nusselt pressure loss, and Darcy friction factor. determination these central design many applications. Notably, has received relatively little research attention compared with other properties. present study thus focuses on development a support vector regression model estimate densities aluminum nitride, titanium silicon nitride...

The aim of this work is to determine the effect neodymium nanoparticles concentration on elastic properties zinc-tellurite glass. A series doped glass systems (NdNPsZT) composition [(TeO 2 ) 0.70 (ZnO) 0.30 ]<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:msub><mml:mrow/><mml:mrow><mml:mfenced separators="|"><mml:mrow><mml:mn...

From the agricultural waste of rice (rice husk), high purity SiO2 with about 98.548 % was extracted using a very simple room temperature leaching method. Using husk silicate, system silicate borotellurite glasses fabricated composition equation [(TeO_2)_0.7 (B_2O_3)_0.3]_1-x (SiO_2)_x x=0.0, 0.1, 0.2, 0.3 and 0.4. The density molar volume were measured, Fourier transform infrared (FTIR), X-ray diffraction (XRD) UV-Vis analyses performed on glasses. Both decreased XRD pattern confirmed...

ABSTRACT Fabrication of hybrid composite nickel oxide (NiO) combined with oil palm empty fruit bunch (OPEFB) reinforced polycaprolactone (PCL) has been done by using thermal Haake blending machine, which ensured mixture homogeneity. All composites' characterizations were carried out X‐ray diffraction (XRD), Fourier transform infrared spectrometry, differential thermogravimetry, thermogravimetric analysis, and scanning electron microscopy. The results showed that the XRD profile patterns...

Elastic moduli of {[(TeO2)0.7 (B2O3)0.3]0.8 (SiO2)0.2}1-y (Er2O3 NPs)y glasses with y = 0.01, 0.02, 0.03, 0.04, 0.05 were studied in this work using the theoretical elastic models. The Makishima &amp; Mackenzie, Rocherulle and bond compression models employed for study. In Mackenzie model, packing density was calculated from bulk glass molar weight whereas model it is determined as individual oxides. Young, shear well Poisson ratio models, while longitudinal, addition to young, model. Bond...

This study explores the properties of Al-Li-Zn glass doped with dysprosium ions as a potential radiation dosimeter. The was prepared using novel quenching technique, and various characterisations were performed to evaluate its properties. X-ray diffraction (XRD) analysis confirmed amorphous phases in glass. UV-vis spectroscopy revealed noticeable absorption peak visible region, characteristic ions. PL spectra luminous peaks at 348 nm (yellow), 529 (green), 625 (orange hue), which...

The success of disaster recovery and rescue operations depends largely on effective communication between teams (RT) victims. Unfortunately, certain disasters go beyond crippling/impairing infrastructures as it equally cripples power grids, which make impossible for survivors to recharge mobile devices. On the other hand, proactive Mobile Ad hoc Networks (MANETs) tend not scale well in dense networks, thus number victims that can connect network may represent totality zone. Therefore, this...

The study on investigation of the physico-mechanical properties hide/skin (Sokoto red goat) using gamma ray irradiation as alternatives to salt curing preservation technique aims at converting flayed skin into state being resistant putrefaction and it is accomplished by destroying active bacteria. leather industry one largest contributors Nigeria’s economy requires more attention be given it. Despite its contribution nation, methods processing poses serious threat environment. Salt...

This article describes attenuation and absorption measurements using the microstrip transmission line technique connected with a microwave vector network analyzer (Agilent 8750B). The magnitudes of reflection (S11) (S21) coefficients obtained from were used to determine oil palm empty fruit bunch/polylactic acid (OPEFB/PLA) composites in frequency range between 0.20 GHz 12 at room temperature. main structure semi-flexible substrates (OPEFF/PLA) was fabricated different fiber loading content...

Borotellurite glass had been widely applied in the field of optical communications and devices. In this work, holmium oxides doped borotellurite successfully fabricated via conventional melt-quenched technique. The structural properties tellurite were found using x-ray diffraction (XRD) method. nonexistence sharp peaks XRD pattern shows that inclusion leads to formation long range disorderness. system such as refractive index band gap energy are investigated UV-Vis spectrophotometer. value...