He was one of a handful of general practitioners in my home town, Louisa, Kentucky. Back then in eastern Kentucky, there were no specialists— no pediatricians, no obstetricians, no surgeons, no psychiatrists, and no anesthesiologists. There was only your family doctor, a GP who may have had one year of training after medical school. GPs back then did just about everything; obstetrics, surgeries...

purpose:dental shade guides are commonly used for color determination and should be disinfected and sterilized. the purpose of this study was to evaluate the color change of vita 3d master shade tabs after disinfection and sterilization. material and methods:overall, 98 samples (shade tabs) were randomly selected from 14 new, unused vita 3d sets, including the following shades: 2m1, 3l1.5, 3m1,...

Meteor Crater of Arizona, three-quarters of a mile across and' six hundred feet deep,, with its walls of tilted and faulted strata and its encircling high rim of pulverized and brecciated rock, is a spectacle for the student of land forms, of geologic structures, and of katamorphic processes. Standing on its rim, one is imp,ressed by the fact that craterforming meteorites are extraterrestrial a...

There are ~ e g : N ms:poets of aser~emt,xu{er ~rforma~ce tha~ sys*em designers s h ~ d sys~emarka{~ ~ e r. This arlic|e prop~yses a ~im~}e m ~ e L the Neys{T{.>ke-Levd Medea, for predkd~g o,~e aspe~'t M w2rferma:mee: the t ime i:t takes ,a~ e x p e l u~wr ~;:o perform a givers *az~ m~ a give= eom,p~:{er sys{~a. The model is b.ae~ e~ counting keystrokes :a~d @~er |owdevel operatkms., i:~c{udir~...

Bidirectional transport of membrane organelles along microtubules (MTs) is driven by plus-end directed kinesins and minus-end directed dynein bound to the same cargo. Activities of opposing MT motors produce bidirectional movement of membrane organelles and cytoplasmic particles along MT transport tracks. Directionality of MT-based transport might be controlled by a protein complex that determi...