In the present work, agriculture waste based biocomposites were developed by reinforcing corn starch resin with various rice husk and walnut shell content of 5, 10 15 wt%. These fabricated investigated for physical, mechanical thermal properties. It was found that physical properties such as density water absorption remains in range 1.20–1.32 g cm−3 4.32%–8.68% respectively, while these decreased increase content. The slower degradation rate resulted enhanced period biocomposites....

In this work, vinylester resin based and hybrid Kevlar-bagasse fiber reinforced homogeneous graded composites were developed evaluated for wear performance on a pin-on-disc machine. An orthogonal array (L16) was applied to examine the influence of four tribological control factors i.e. content, normal load, sliding distance velocity. The experimental results indicate that load emerges as most important factor affecting rate with contribution ratio 36.33% 32.09% respectively. Furthermore,...

Abstract Pellet samples of (Ba0.9-zSrzCa0.1)(Zr0.1Ti0.9)O3, with z ranging from 0.08 to 0.12, were prepared using the solid-state reaction route. Dielectric measurements obtained for all compositions at various frequencies (1-1000 kHz) and temperatures (room temperature 250°C). The structural piezoelectric properties room (RT), where maximum dielectric (5615 1 MHz) constant (964 pm/V) observed = 0.10 among samples. Further, 0.10, X-ray diffraction (XRD) peak patterns showed an anomalous...

The present work elucidates a method for the economic development of reproducible electrode sensitive determination and prediction amount gallic acid (GA) in green tea (GT) by molecularly imprinted polymer (MIP) technology. material has been synthesized co-polymerization itaconic ethylene glycol dimethacrylate (EGDMA) followed implantation copper oxide nanoparticles (CuO NPs). demonstrated two wide linear ranges, i.e., 1 μM - 100 to 900 with low detection limit 12.6 nM. practical...

The current study throws light on the development of an Yttrium Oxide nanoparticle-ingrained Graphite Paste Electrode (Y <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> @GP) serving as efficient, pocket-friendly sensor for detecting Amaranth (AMR) electrochemically. Y nanoparticles were synthesized by a simple sol-gel method, using solution capping agent named Poly-ethylene glycol...

Dielectric constant, loss tangent and electrical conductivity of Na1−xKxNbO3 (X = 0.08 0.17)(SPN) ceramic pellets have been measured at 10, 100 1000 kHz frequencies temperature varying from room to 425°C. The dielectric constant increases with increase up 400°C all the three frequencies, thereafter, it decreases further temperature, i.e., shows a structural transition about 400°C. also similar behaviour as shows. Some variations may be due relaxation effects impurities etc. around sensitive...

Background: Some of the heavy metals are considered beneficial, if intake them is within permissible trace amount and some other highly toxic even in amount. So, one major concerns. Heavy enter into body via air, water, food, clothing gets accumulate organs this leads to many disorders causes life threatening diseases including cancer. All our food comes from plants directly or indirectly. Tea consuming beverage after water leaves plant/shrub Camellia Sinensis. Methods: Aim present work...

The effect of potassium content on the structure and piezoelectric properties Na1−xKxNbO3 (x = 0.08 0.17) (SPN) ceramics has been systematically studied. pellets preparation characterization have reported earlier. were observed. P-E loops, strain%, polarization current value d33* increasing with application Electric field, rate for x was faster than compared to 0.17. 0.17 are 144 (pm/V), 136 (pm/V) respectively at applied field 44 kV/cm.

In this work, pellet samples of (Ba 1−x Ca x Zr 0.1 Ti 0.9 )O 3 , (0.140 ≤ 0.160) were prepared using solid-state reaction route with double sintering. The dielectric and structural properties the measured, from room temperature to 250 °C, at different frequencies, in range 10–1000 KHz. A peak shifting anomaly X-ray diffraction peaks patterns, an anomalous change slope c/a vs plot, observed minimum values constant, loss conductivity compositions show a strong compositional dependent...

Thin films were deposited, on quartz and p-Si (100) substrates, by radio frequency (RF) sputtering of ceramic barium calcium zirconate titanate [(Ba 1−z Ca z )(Zr 0.1 Ti 0.9 )O 3 ], (z = 0.155), target. The as-deposited annealed for one hour at different temperatures, between 500 °C 800 °C. occurrence film crystallization was observed annealing above 600 However, peeled out structure, optical transmittance, dielectric constant leakage current the prepared (hereafter referred to as BCZT...

Ceramic pellets of (Ba 1−k Ca k )(Zr 1−z Ti z )O 3, (k = 0.140–0.160, 0.9) were prepared via solid-state reaction technique followed by double sintering. The impedance measurements carried out at different temperatures and frequencies (12–1000 kHz). NTCR nature exhibits the semiconducting behavior BCZT ceramics in measured temperature range. also has a considerable impact on relaxing process. characteristics Nyquist plots show that bulk grain boundary effects exist ceramics. conductivity...

In this work, pellet samples of barium calcium zirconate titanate (Ba1-xCaxZr0.1Ti0.9O3, x=0.065) were prepared using solid state reaction route with double sintering. The structural and piezoelectric properties measured. Further, SEM EDAX analysis observed. With different sintering temperature, the density grain size changed further, their effect in has been For samples, converse constant (d33*) decreased increase temperature. was measured highest (153 pm/V) at 1300?C.

In this study, pellet samples of Na1-xKxNbO3 (NKN) (0.160 ≤ x 0.200) were prepared using the solid- state reaction method with double sintering. Electric conductivity (σ), loss tangent (tan δ), and dielectric constant (ε) observed for all compositions from room temperature (RT) to 480 oC, at 10, 100, 1000 KHz. For ≤0.200), XRD patterns temperature. escaping Na K found minimum = 0.175. The EDAX confirms 'p- type' in ceramics. Further, was due less 'A- site' vacancy concentration, near MR...

The application of high-speed real-time data acquisition is becoming increasingly wide spread in industrial field, and its measurement accuracy also increasing. In the present study, development a USB based system presented here, where microcontroller standalone embedded used as collection field control device. has been calibrated terms output voltage generated signal conditioner. device for error result. Here programmed Human Interface Device (HID) class, hence not requiring any kind...

Sodium potassium niobate (NKN) powders were synthesized by the solid-state reaction method. The NKN ceramics for composition Na0.92K0.08NbO3 then fabricated a two-step sintering technique. effects of on properties investigated. pure phase was achieved all temperatures 1100, 1150, 1200 and 1250?C. observed change in microstructure indicates that grain size increases with increasing temperatures. Also, technique produced higher value K/(K+Na) weight-% ratio peak dielectric constant 1150...

The influence of double sintering temperature on the phase structure, micro-structure and piezoelectric properties Ba1-xCaxZr0.1Ti0.9O3 (x = 0.055) sintered ceramics has been systematically studied. pellet sample preparation characterization have reported in this paper. converse were observed. Depending upon temperature, grain size density BCZT changed. P-E loops, strain%, polarization current measured. value d33 was decreasing with application an electric field case pellets. For x 0.055,...