The application of reactivity parameters derived from density functional theory in a local sense, in particular the softness and Fukui function, to interpret and predict the mechanisms of various organic reactions has been discussed. Local softness is shown to be successful in determining the site-selectivity and regiochemistry and can be used as an alternative to the traditional frontier orbit...

Newspaper stories of building or expanding large-scale animal operations generally indicate that nearby communities, or at least a vocal minority, oppose the development of concentrated operations. However, conflict about the beginning or intensification of operations says little about the persistence of the controversy or the negative public opinion. A survey of 53 large-scale swine facility p...

The stability of non-homogeneous, steady state solutions of a scalar, non-local reaction-diffusion equation is considered. Sufficient conditions are provided that guarantee that the relevant linear operator possesses a countable infinity of discrete eigenvalues. These eigenvalues are shown to interlace the eigenvalues of a related local Sturm-Liouville operator. An oscillation theorem for the c...

The development of a purpura-fulminans-like disorder which is a human equivalent of a local Shwartzman reaction in a woman with active chronic hepatitis is described. The cyclical appearance of blue-black, well circumscribed, haemorrhagic, acutely painful lesions in the buttocks, over the lateral aspects of the thighs, and on the arms suggested the diagnosis. Evidence of increased intravascular...

Yellow fever vaccine is a live attenuated viral inoculation indicated for patients traveling to endemic areas. The vaccine is generally well tolerated with minimal adverse effects. Typical side effects include malaise, pain at the injection site, and, albeit rarely, immediate hypersensitivity reactions. We present a case of a rare adverse reaction to yellow fever vaccine in which a patient deve...

The local Shwartzman reaction was provoked in the skin of the ear, hind leg, and costovertebral angle of the rabbit, as well as in the ventral abdominal skin. Certain adrenergic blocking drugs reduced the incidence of positive reactions when given prior to the provocative dose of bacterial polysaccharide. Epinephrine and other vasoconstrictor drugs administered intradermally into the prepared s...

A critical review is presented of the results of (experimental) quantitative structural studies of molecular reaction intermediates at surfaces; i.e. molecular species that do not exist naturally in the gas phase and, in most cases, are implicated in surface catalytic processes. A brief review of the main experimental methods that have contributed to this area is followed by a summary of the ma...

Background: Anaphylaxis is one of the rare clinical events specifically related to anesthesia leading to morbidity and mortality. In this manner, the aim of our study was to determine knowledge of Iranian dentists about symptom, sign and management of anaphylaxis to local anesthesia. Methods: The study was designed with a questionnaire (16 questions) related to anaphylaxis to local anesthesia i...