Clinical computing is being increasingly adopted in general dentistry. However, future research must address usefulness and ease of use, workflow support, infection control, integration, and implementation issues.

No abstract

No abstract

The conversion of ethanol to hydrocarbons by use of a ZSM-5 zeolite catalyst was studied. The effects of zeolite Si/AI ratio, ethanol dilution, and process variables (temperature, space velocity, pressure, and recycle rate of gaseous products) were established. Results were justified in accordance with a carbenium ion mechanism previously suggested in the literature. This process could be described by a second-order reaction with simultaneous formation of paraffinic and aromatic hydrocarbons. The experimental data agreed with the model with a mean deviation of less than 10%. The thermochemistry of the ethanol to hydrocarbon process is considered.

Finite mixtures, Mean residual life, Failure rate, Order statistics, Coherent system, k-out-of-n system,