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Biomedical subjects

J Vitiello

Publications and source records attributed to J Vitiello.

6 recordsLinked to original sources
PubMed2004

Gas permeability of porous silicon nanostructures.

The gas (air and hydrogen) flow through porous silicon ( PS ) nanostructures is studied. Being well described by Darcy's law, the gas flow measurements allow us to deduce PS permeability values, which are measured to be 10(-16) - 10(-15) m(2), corresponding to the 50-70% porosity range. A strong porosity dependence of the PS intrinsic permeability is found to be in good agreement with Kozeny's model. The influence of nanoscale morphology on the porous layer permeability is shown and discussed, taking into account the fractal-like specific surface of the PS nanostructures. In particular, the liquid permeability of the PS nanostructure is estimated to be 6.4x 10(-18) m(2) from the observed Klinkenberg effect for gas flow.

Journal Article↗
PubMed2001

Internet/Web-based administration of benefits.

Most funds will face the challenge of deploying at least some Web-based functionality in the near future, if they have not already done so. Clear objectives and careful planning will help ensure success. Issues that must be considered include support requirements, security concerns, functional business objectives, and employer and member Web access.

Computer Security↗
PubMedDate not supplied

Reengineering--it's totally radical.

Reengineering. What does it really mean? How does it work? Where do you begin? And, if it's as great as it's cracked up to be, why does it fail more often than not?

Humans↗
PubMedDate not supplied

Reengineering--setting a course for radical change.

When you pull up anchor and start reengineering, the seas can look a little rough. Here's what the strategist can expect when retooling some of the typical business processes that make up an average company: manufacturing, sales, information technology, back office/support services, and human resources.

Industry↗