Inorganic coated fibers produced bychemical vapor deposition find several tecl~nological applications. In this CVD process, a fiber core is mounted in a. react,or between two e1ect.rodes. Reactive gases flow over the substrate and react. near or on the fiber surface to form the desired coating. Experience has sl~o\vn that quality deposition can only be obtained over a. small range of the govern...

A modified tubular photobioreactor was constructed at the J.J. Look Laboratory. The design of this reactor was based on the Tredici-design near-horizontal tubular photobioreactors already present at this facility, but incorporated several features designed to improve mass transfer of carbon dioxide into the liquid phase, facilitate the stripping of photosynthetically produced oxygen, and improv...

Data on the influence of substrate composition on the anaerobic degradation of bovine serum albumin (BSA) in a bench-scale packed-bed reactor are presented and discussed from the standpoint of substrate consumption kinetics. The experiments were carried out in a horizontal-flow anaerobic immobilized biomass (HAIB) reactor fed with BSA based substrates. BSA was the sole carbon source in the firs...

A simple classification scheme of low pressure chemical vapor deposition processes is discussed which is based on only three different one-dimensional models of the radii film thickness distribution on silicon wafers processed in a conventionaI horizontal hot-wall reactor. Comparing Lhmretical predictions of these models with experimental results obtained from various LPCVD processes, a good qu...

Chemicals and thermal treatments Two types of commercial anatase TiO2 with a specific surface area of 300 m2 g-1 and 95 m2 g-1were used as-received from Sachtleben Chemie (Duisburg, Germany). Annealing was carried out in a horizontal furnace equipped with a quartz tube reactor. Typically, the TiO2 powder sample (1 g) was heated in a quartz boat at a temperature gradient of 10 oC min-1 till reac...

Homogeneous nucleation of a vapor in the presence of the loss of clusters by diffusion and thermophoretic drift is investigated. Analytical results are obtained for the cluster size distribution and the rate of nucleation by solving the modified kinetic equation for nucleation. The implications of cluster loss by diffusion and phoretic drift on the onset of the homogeneous nucleation of silicon...

The inverted geometry time-of-flight spectrometer NERA designed for simultaneous investigation of elastic and inelastic neutron scattering was constructed on a 100 meter long flight path of the IBR-2 reactor at JINR, Dubna, Russia. Spectrometer parameters were optimized for the thermal neutron spectrum of a water moderator at 330 K. Recently, a new type of cold neutron source operating at 30 K ...