In this work, we present firstly a study based on the calculation of the local spin densities of radical cations, which is known as a good measure of reactivity for coupling reactions, to obtain a theoretical basis for the one-step formation of poly(3.6-carbazole) and derivatives. Then we detail a DFT theoretical study of the geometric and electronic properties of oligomers based on carbazole a...

This numerical study reports the aerodynamic properties of a hybrid airship. The airships were designed by combining two semi-ellipsoids with semi-discoid as base model. From model, three different geometrics identified to their characteristics. A circular slot was provided between pressure side and suction objective this realize flow behavior, characteristics, stability such slotted flying veh...

One of the primary objectives transportation engineering is to increase safety road infrastructure. This study seeks determine relationship between geometric design parameters in relation accident criteria based on hotspots Jordan’s Desert Highway. The data (from 2016 2019) were collected from Jordan Traffic Department. spatial pattern was identified using a GIS tool named Getis-Ord Gi* severit...

background: nasal fracture is a common fracture due to trauma. gold standard method in diagnosis of nasal fracture is clinical examination and radiography is used in legal situation. recently, ultrasound is recommended as a noninvasive and simple method in diagnosis of nasal fracture. this study investigates the role of ultrasound in diagnosis of nasal fracture. methods: 126 cases with suspecte...

background:  hip fracture management in supine position on a fracture table with biplane fluoroscopic views has some difficulties which leads to prolongation of surgery and increasing x- rays’ dosage. the purpose of this study was to report the results and complications of hip fracture management in lateral position on a conventional operating table with just anteroposterior fluoroscopic view. ...

background:  due to difficulty in obtaining anatomical reduction, management of the unstable intertrochanteric fractures in elderly osteoporotic patients is challenging. the purpose of this study is to compare the results of hip arthroplasty (total, hemi, or bipolar) with dhs in the elderly patients with unstable intertrochanteric fractures.   methods:  we prospectively studied and followed-up ...

introduction: the aim of this in vitro study was to compare the effect of hand and rotary instruments on fracture strength of tooth roots. materials & methods: thirty two teeth were randomly divided into two experimental groups of 15 each and one negative control group with two samples. in group 1, step-back technique with conventional stainless steel k-files was used, and in group 2, instrumen...

INVESTIGATING THE RELATIONSHIP BETWEEN LATENT DRIVING PATTERNS AND TRAFFIC SAFETY USING SMARTPHONE-BASED MOBILE SENSOR DATA Kenneth Wynne Old Dominion University, 2016 Director: Dr. Rajesh Paleti Crash frequency modelling has been used in the past as an attempt to quantify the expected number of crashes occurring on a certain segment of roadway given a set of variables and factors describing th...

Fractures of the rostral mandible in horses are the most common type of jaw fractures. The present study was performed for stabilization of rostral mandibular fracture with cerclage wire. In a retrospective case series, six client-owned horses with unilateral mandibular fractures were admitted to our clinic and suffered from a major gingival wound at rostral part of mandible. Rostral mandibular...