Irregularity indices are graph-theoretic parameters designed to quantify the irregularity in a graph. In this paper, we study practical applicability of QSPR modeling physicochemical and quantum-theoretic properties compounds. Our comparative testing shows that recently introduced IRA index has significant priority over other indices. particular, show correlation potential with certain such as ...

Introduction: A study model is a precise three dimensional replica of patient’s dentition and plays an important role in treatment planning. Many digital multi-media applications have become available to the clinician and his or her staff to facilitate standard procedures in practice and management. The aim of this study is to evaluate reliability and validity of dental measurement made on dig...

In this study, the changes caused by caffeic acid phenethyl ester (CAPE) in histopathological and biochemical parameters oxidant / antioxidant balance mice with experimental cadmium toxicity were investigated. Plasma paraoxonase (PON) activity, high-density lipoprotein (HDL), low density (LDL), total sialic (TSA), capacity (TAC), (TOC), oxidative stress index (OSI) analyzed on mice’s blood samp...

bus systems are unstable without considering any control. thus, we are able to consider some control strategies to alleviate this problem. a holding control strategy is one commonly used real-time control strategy that can improve service quality. this paper develops a mathematical model for a holding control strategy. the objective of this model is to minimize the total cost related to passeng...

BACKGROUND Anchorage onto permanent dentition is a common procedure in rapid maxillary expansion. However, replacing first permanent molars with the second deciduous molars seems to be an option to reduce some negative side effects during orthodontic treatment. The purpose of this study was to evaluate the dental effect of rapid maxillary expansion with anchorage exclusively onto deciduous teet...

OBJECTIVE To identify, among Mexican teenagers from public and private schools, the frequency, severity of malocclusion and orthodontic treatment needs, and their possible association with temporomandibular joint disorders. MATERIAL AND METHODS Fifteen-year-old students were recruited from public and private schools. Clinical findings were registered as follows: oral hygiene status with the O...

background and aims. the correct relationship of the total mesiodistal width of the mandibular teeth to that of the maxillary teeth (bolton’s ratios) is among the main factors considered in obtaining an optimal occlusion. the present study was conducted to determining the bolton’s ratios before and after treatment in skeletal class i patients. materials and methods. in this descriptive analytic...

BACKGROUND The purpose of this study was to compare the safety and efficacy of two alternative corneal topography data sources used in topography-guided excimer laser normalization, combined with corneal collagen cross-linking in the management of keratoconus using the Athens protocol, ie, a Placido disc imaging device and a Scheimpflug imaging device. METHODS A total of 181 consecutive patie...

the total version of geometric–arithmetic index of graphs is introduced based on the endvertexdegrees of edges of their total graphs. in this paper, beside of computing the total gaindex for some graphs, its some properties especially lower and upper bounds are obtained.

We show a coincidence of index rigidity differential equations with irregular singularities on compact Riemann surface and Euler characteristic the associated spectral curves which are recently called curves. Also we present comparison local invariants, so Milnor formula links Komatsu–Malgrange irregularity number