With the continuous advancement of China's transportation infrastructure, number and proportion highway tunnels in expressway construction are increasing year by year. In order to accurately evaluate quality safety tunnel engineering, finite element analysis is used secondary lining structure, slotting method analyze working stress load on structure inversely analyzed combined with three-dimens...

In this article we report our first investigations of a new contactless localizing sensor based on the propagation slow waves in metamaterials. Using properties magnetoinductive one dimensional metamaterial are able to unambiguously locate nearby object. This works because when an object impinges near field metamaterial's meta-atoms, it introduces local defect resulting reflections waves. Key p...

BACKGROUND The present study aimed at evaluating the efficacy of a novel technique, the bone lamina technique, in horizontal ridge augmentation clinically & radiographically using a combination of allogenic cortical shell, particulate xenograft and resorbable collagen membrane. MATERIAL AND METHODS Localized horizontal ridge defects, in ten patients (6 male, 4 female), with bucco-palatal ridg...

AIM The aim of this study was to compare the clinical outcome of submerged vs. non-submerged tapered implants placed into fresh extraction sockets. MATERIALS AND METHODS A prospective, controlled, multicenter, randomized, clinical trial has been performed in two centers in Rome and Torino (Italy). Thirty healthy patients were recruited according to the following inclusion criteria: need for a...

OBJECTIVE Treatment of furcation defects are thought to be challenging. The purpose of this study was to evaluate the clinical and radiographic parameters of Bio-Gen with Biocollagen compared with Bio-Gen with connective tissue in the treatment of Class II furcation defects. MATERIAL AND METHODS In this clinical trial, 24 patients with Class II furcation defect on a buccal or lingual mandibul...

BACKGROUND Different surgical procedures have been proposed to achieve horizontal ridge reconstruction of the anterior maxilla; all these procedures, however, require bone replacement materials to be adapted to the bone defect at the time of implantation, resulting in complex and time-consuming procedures. The purpose of this study was to describe how to use a 3D printed hardcopy model of the m...

option of defect is one of common options between sale and rent contracts, however, it has special rules and conditions in those contracts. in the sale contracts, any defect in the sold or bought thing causes the victim has option of defect but in the rent contracts, only the defect creates option of defect that causes hardship in using of goods or reducing of benefits. in the sale, defect of s...

abstract : horizontal root fractures in permanent teeth are uncommon injuries among dental traumas. the principle of treating horizontal root fractures of permanent teeth is repositioning and fixation of fractured segment. diagnosis of tooth fractures based on radiographic findings and the fracture healing process are affected by factors before and after injury. the present case reports the tre...