in this work, the waste stone sludge obtained from the granite and marble stone processing factories was used for the manufacture of artificial stones using vibratory compaction in a vacuum environment. the results obtained showed that water absorption and density increased, and the flexure, compressive, and tensile strengths decreased with increase in the content of the waste stone sludge. the...

this paper presents a new model for predicting the compressive strength of steel-confined concrete on circular concrete filled steel tube (ccfst) stub columns under axial loading condition based on artificial neural networks (anns) by using a large wide of experimental investigations. the input parameters were selected based on past studies such as outer diameter of column, compressive strength...

domestication of animals has had some important effects on physiology, morphology, behavior and well-being of domesticated animals. conscious or goal directed selections on animals for increasing their productions has accelerated the rate of the changes, leading to some well-being defections. this paper notes some aspects of animal domestication in context of genetic science. then explains how ...

objectives: the aim of this study was to evaluate the effect of four commercially available mouthrinses on the color stability of one type of glass ionomer, giomer and compomer. method: 60 disc-shaped specimens, 180 in total (7*2mm), fabricated from each of the following materials: a resin modified glass ionomer fuji ii lc (gc international corp), a giomer beautifil ii (shofu inc) and a compome...

introduction: the aim of this study was to assess the galvanic behavior of different bracket and archwire combinations that are commonly used in orthodontic treatments. methods: three types of orthodontic archwires with a diameter of 0.016×0.022 inch and 80 standard edgewise maxillary central incisor brackets were selected. three groups consisted of different wire-bracket couples and one group ...

results there were 80 successful and 44 unsuccessful as well as 72 successful and 8 unsuccessful weaning cases in the first and second phase of the study, respectively. the area under the roc curves for iwi was 0.967, with standard error of 0.020, 95% confidence interval of 0.899 to 0.993 and significance level of p = 0.001, se = 94.59, sp = 66.67, ppv = 97.22, npv = 50, da = 92.5 and likelihoo...

introduction: intravenous general anesthetic agents are among the most important and widely used anesthetic drugs in the clinical practice. many pharmacological studies have shown that potentiation of gaba and glycine on their receptors is the most plausible mechanism. nevertheless, there is limited information on the effects of co-administration of two or more of these agents. however, experim...

abstract agricultural sector is the most important sectors in the country which has a large share in total employment. the increasing supply of labor because population growth and low capacity of production cause the country with high rate of unemployment. therefore, stand with this crisis is one of the most important works of government. in this study using artificial neural network, the emplo...