An in vivo acid etch biopsy method was developed by Hotz et al (1970) to determine fluoride uptake and re­ tention in the outer 5 pm to 15 pm of enamel. This technique was evaluated by means of scanning electron microscopy and planimetry. Because of the difficulty experienced in controlling the areas etched, a modifi­ cation was introduced by defining the biopsy areas with annular adhesive disc...

The Timed Interval Calculus, a timed-trace formalism based on set theory, is introduced. It is extended with an induction law and a unit for conca-tention, which facilitates the proof of properties over trace histories. The eeectiveness of the extended Timed Interval Calculus is demonstrated via a benchmark case study, the mine pump. Speciically, a safety property relating to the operation of a...

Abiotic stress limits crop productivity [1], and plays a major role in determining the distri‐ bution of plant species across different types of environments. Abiotic stress and its effects on plants in both natural and agricultural settings is a topic that is receiving increasing at‐ tention because of the potential impacts of climate change on rainfall patterns and tempera‐ ture extremes, sal...

tention in a series of 12 patients, according to Sodee, and he discontinued the mercuhydrin injection ( 7 ). McAfee noted that pharmacologists have been unable to block the uptake in the kidneys, despite pre-dosing rats with cold mercurials with doses up to 20 mg of mercury per kilogram, a tremendously toxic dose (8). Although brain scanning with such short-lived isotopes as 99mTcand 197Hg is r...

Depuis le début des années 2000, une controverse d’abord nationale puis transnationale a émergé autour exécutions capitales par injection létale aux États-Unis. Au cours de cette période, forme particulière mise à mort été dénoncée pour son usage détourné techniques et produits empruntés la pratique ...

This study aimed to identify programmatic vulnerability to STDs/HIV/AIDS in primary health centers (PHCs). This is a descrip - tive and quantitative study carried out in the city of São Paulo. An online survey was applied (FormSUS platform), involving administrators from 442 PHCs in the city, with responses received from 328 of them (74.2%), of which 53.6% were nurses. At - tention was raised i...