Gas-sensing characteristics of thick films prepared using NiO nanoparticles (NPs) have been investigated. NPs were synthesized via a facile and cost-effective chemical coprecipitation method. different sizes produced by varying growth parameters such as stirring annealing temperatures. These nanomaterials investigated several techniques to determine their morphology, crystal structure, phase purity, composition. A dilute solution hexamethyldisilazane (HMDS)-functionalized in propan-2-ol was...

An optogalvanic spectrum of scandium, recorded in the range 575–625 nm by using a cw dye laser and scandium:neon hollow cathode discharge lamp, is reported. High-resolution spectra seven transitions Sc are analyzed order to obtain hyperfine coupling constants. We report A B constants for four metastable levels configuration 3d24s five high-lying odd 3d24p.

Doppler limited Optogalvanic Spectroscopic technique is employed to study the hyperfine structure of six transitions 93Nb. An externally stabilized single frequency ring dye laser and a commercial Nb/Ne hollow cathode lamp were used. From observed well resolved components spectra magnetic dipole electric quadrupole coupling constants evaluated. The for 12 levels are reported in this paper out which values four first time. Our compared with previous data wherever available.

This article describes automated identification, classification, division and determination of release direction complex undercut features die-cast parts. The proposed system uses the concepts visibility accessibility to identify from a B-rep model die-casting part. are then classified using rule-based algorithm. Thereafter, identified separated into simple ones. Finally, for each feature is determined those having common grouped. implemented on case study parts, results verified. would help...

In this study an eigen value approach has been employed to examine the mechanical force applied along with a transverse magnetic field in two dimensional generalized magneto micropolar thermoelastic infinite space. Results have obtained by treating rotational velocity be invariant. Integral transforms solve system of partial differential equations. Components displacement, normal stress, tangential couple temperature distribution, electric and transformed domain. Finally numerical inversion...

The hyperfine structure of 22 states niobium is studied by Doppler-limited laser optogalvanic spectroscopy. sample was prepared a sputtering technique employing niobium–neon hollow-cathode lamp. A frequency-stabilized single-frequency ring dye used for excitation, and spectroscopy techniques were detection. From the recorded well-resolved spectra magnetic dipole electric quadrupole coupling constants are evaluated. 13 belonging to configurations 4d45s, 4d45p, 4d35s5p being reported first...

The high-frequency characteristics of MOS devices are investigated with a view to the identification nonquasistatic (NQS) effects considering Bagheri and Tsividis I-order NQS model as reference. An exhaustive set data is analyzed. It indicates existence in long- well short-channel devices. Significant differences observed between charge based quasi-static measurements for long-channel (25- mu m) device. A deembedding technique suggested observe intrinsic device behavior up higher range...

A highly efficient generalized physics-based approach for small-signal characterization of FET devices is presented. novel method developed extracting the frequency dependent two-port parameters from a single time-domain physical simulation based on multi-signal excitation scheme. The technique applied to simulating frequency- and bias-dependent scattering HEMT's using quasi-two-dimensional model that incorporates main phenomena which govern device behavior. new carrier energy distribution...

Abstract Experimental investigations are made of the infrared transmission spectra MgO and ZnS in region fundamental lattice absorption at room temperature. The magnitude effect anharmonicity has been calculated discussed light symmetry resonance frequencies. effective ionic charge compressibility Szigeti's relations significance these results is from point view various models dielectric behaviour.

Abstract An interionic potential model is developed which incorporates the effects due to long‐range Coulomb and three‐body interactions short—range overlap repulsion operative up second‐neighbour ions, van der Waals dipole‐dipole dipole—quadrupole attractions. The use of this for comprehensive calculations yields satisfactory prediction lattice statics allied properties zincblende‐type compound semiconductors. These successes reveal importance in these

Abstract The resonant frequency of a planar elliptical microstrip patch radiator is obtained in analytical form. formula modified by using techniques previously used for triangular radiators, so producing greater accuracy.

Manufacturing industries are concentrating on increasing productivity, reducing downtime, maintenance and operation costs, ultimately achieving profitability, competitiveness, sustainability. These goals can be achieved through the application of management package like Computerized system (CMMS) in industry for automating activities. CMMS is a software handling all types activities manufacturing industry. But there several challenges with implementation any organization. In this paper, nine...