نتایج جستجو برای: lasting in time
تعداد نتایج: 17171599 فیلتر نتایج به سال:
Abstract The present work addresses the problem of unified methodology use for vibration analysis caused by various anthropogenic sources. experimental part paper contains and results comparison vibration, induced freight train passages hammer percussion. Ground vibrations are important civil engineering objects condition since is transmitted through ground to foundation structure. can also be ...
white spot lesions are observed in nearly 50% of patients undergoing orthodontic treatment. long-lasting antibacterial properties of orthodontic cements can reduce this phenomenon. the aim of this research was to compare antimicrobial activity of three commercial glass ionomer cements with three commercial zinc phosphate cements, over time, against streptococcus mutans and candida albicans. dir...
We propose the following simple stochastic model for phylogenetic trees. New types are born and die according to a birth and death chain. At each birth we associate a fitness to the new type sampled from a fixed distribution. At each death the type with the smallest fitness is killed. We show that if the birth (i.e. mutation) rate is subcritical, we obtain a phylogenetic tree consistent with an...
Objective- To compare the lidocaine-MgSO4 combination with lidocaine-Distilled water inthe epidural of indigenous awake dogs.Design- Prospective experimental study.Animals- Five young (12±2 months) female indigenous dogs weighting (10.74 ± 0.44 kg).Procedures- Epidural anesthesia was produced in all dogs with 2% lidocaine (1ml/4.5 kgbody weight) with 1 ml distilled water and two weeks later rep...
introduction:One of the most important chalenges in studing the anxiety disorders like PTSD is ethical limits in order to make the animal anxious. Sometimes this anxiety should last for a long time such as rodent models of PTSD, and this needs aggressive proceses on rats.We found a new approach for a rodent model of PTSD, wich seems to be more efficient and ethical. Materials and Methouds...
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