Admittance models for open ended coaxial probes and their place in dielectric spectroscopy

Starting from a rigorous formulation for the admittance of an open ended coaxial probe, this paper identifies the simplifying assumptions that are introduced to obtain more practical solutions. The predictions of the models are compared to each other and to experimental data obtained on an independently calibrated experimental set-up. The advantages and limitations of a model are determined by the theoretical derivation and the numerical solution. The model identified as most suitable for the measurement of the dielectric properties of biological materials is used to determine the relative permittivity and conductivity of muscle and skull bone in the frequency range 1 MHz to 20 GHz.     

Investigational drug tracking: Phases I-III and NDA submissions--Part I

The author catalogs over 800 investigational drugs/biologicals currently in Phase I, II or III clinical trials or drugs/biologicals submitted to the FDA as new drug applications. The list assists in predicting when new drugs will be marketed. The entries include generic/chemical name, investigational drug number, synonyms, trade names, manufacturers, clinical trial status, predicted approval year, indications or drug class, whether the drug has been developed through biotechnology, and references. Entries were gleaned from medical journals, stock market analysis publications, and the Pharmaceutical Manufacturers Association's Medicines in Development Series. The list is alphabetized by the generic/chemical name or investigational drug number and cross-indexed by the trade name and synonyms. The list reflects those drugs which were not FDA approved as of April 15, 1994. Part I includes the trade name and synonym cross-indexes and the beginning of the main alphabetical listing by generic/chemical name or investigational drug number.     

Standardized forms in pediatrics: an idea whose time has come

Want to practice better medicine, insure third-party reimbursement, and help educate residents in primary care? A standardized encounter form can do all this, and more. Here's how.