This paper reports on the preparation and characterization of thin films of silicon nitride deposited on heated silicon substrates from Si(CH, ),-NHS-H, mixtures activated at room temperature by an a-c. discharge at low frequency. The films were deposited at 800°C. Deposition rate as well as refractive index were measured and several parameters were systematically varied , including deposition ...

An analog VLSI circuit model of the vocal tract is described. The vocal tract is acoustically modeled as a series of uniform cross-section tubes concatenated end-to-end. Each section of tube is modeled as an RLC circuit whose element values are determined by its area and length with the current and voltage corresponding to volume velocity and pressure in the tube. An analog VLSI circuit is desc...

The axi-symmetric Young-Laplace differential equation is analyzed. Solutions of this equation can describe the outer or inner free surface of a static meniscus the static liquid bridge free surface between the shaper and the crystal surface occurring in single crystal tube growth. The analysis concerns the dependence of solutions of the equation on a parameter p which represents the controllabl...

Industrial CT (computerized tomography) uses a series of 2-dimensional images taken at specific intervals around the entire sample. Basically any type of industrial CT system uses three principal components: an X-ray tube, an X-ray detector, and a rotational stage. Everything is enclosed within a radiation shielding steel/lead/steel cabinet that typically ranges between four and 10 feet cubed. ...

Industrial CT (computerized tomography) uses a series of 2-dimensional images taken at specific intervals around the entire sample. Basically any type of industrial CT system uses three principal components: an X-ray tube, an X-ray detector, and a rotational stage. Everything is enclosed within a radiation shielding steel/lead/steel cabinet that typically ranges between four and 10 feet cubed. ...

Solar photovoltaic/thermal technology has been widely utilized in building service area as it generates thermal and electrical energy simultaneously. In order to improve the system performance, nanofluids are employed fluid owing its high conductivity. This paper summarizes state-of-the-art of systems with different loop-pipe configurations (including heat pipe, vacuum tube, roll-bond, exchange...

We report a new implementation of three-dimensional (3D) momentum imaging for electrons, employing two-dimensional (2D) detector and silicon photomultiplier tube (siPMT). To achieve the necessary time resolution 3D electron imaging, poly(p-phenylene)-dye-based fast scintillator (Exalite 404) was used in instead conventional phosphors. The system demonstrated an time-of-flight comparable with th...

the water deficit is the most important limiting non-biological factor to achieve the potential yield of crops. to evaluate the effect of silicon application on yield of millet under drought stress in field an experimental was carried out. treatments were included three irrigation regimes after 60 (non-stress), 90 (moderate stress) and 120 (severe stress) mm evaporation from evaporation pan, cl...