Effects of mass waste events on thrust wedges: Analogue experiments and application to the Makran accretionary wedge

Olistostromes cover large portions of active thrust wedges like Makran, Gulf of Cadiz, and offshore Borneo. Olistostrome emplacement by submarine mass flow represents an instantaneous and massive mass redistribution that may influence thrust wedge mechanics. Different scenarios are experimentally tested. They show that the postolistostrome wedge development depends on the thickness and extent of the added load. These results are discussed after the example of the Iranian Makran wedge, situated between the Arabian and Eurasian plates. Mass redistribution caused by a late Miocene mass flow may explain a change in deformation style from intense folding and thrusting to gentle folding and eventually a jump of thrust imbrication toward the frontal offshore part of this active accretionary wedge. © 2010 by the American Geophysical Union

Interaction and communication teaching – learning process improvements solutions of smart schools

This study was aimed at identifying interaction solutions in improving the teaching – learning process of smart schools in Semnan the method used for this study was exploratory mixed method that first part is qualitative and second part is quantitative. In the qualitative research, in first case 6 persons who are expert in ICT were sampled and they were interviewed in depth method, in second case 24 teachers were chosen in a purposive and snowball methods and they were interviewed in semi-guided method. After content analysis of the obtained results of interviews and deep theoretical study, the researchers developed this results in a form of questionnaire contained 2 sections: 1: demographic information and 2: interaction solutions in improving teaching – learning process of smart schools in the ideal situation and the present situation. Construct and content validity of the questionnaire was determined by experts, and its reliability was calculated using Cronbach's alpha, which in the ideal situation reported 0.85 and in the present situation 0.89.In the quantitative part of the research, questionnaires were completed by 254 teachers, 24 managers, 24 deputies and 8 experts in ICT that they were sampled in a stratified method. The results are shown that " connecting schools to National intranet and creating local network to the school "with the most important which are ranked in the first place. «Mobilization computer mini PC, class mate, thin client or lap top connected to the network lan" is in the second place» Computer integrated communication with other schools that is placed in the third." Active member in the Portals smart schools» in the fourth place of the improving effect of the teaching - learning played roles in the smart schools

Concerning The Use of Social Software on Constructivist Classroom Characteristics:Case study; Smart school

The research aimed to study the effects of social software application on constructivist classroom Characteristics. Applied research and descriptive - survey was conducted. The population consisted of all male and female teachers in the smart high schools that were selected by random sampling, 103 of them were selected as participants. The research's tool is scale of constructivist classes based on e-learning model Mvvdly and scale of social software applications. The reliability and validity of tools was calculated using the Cronbach's alpha and internal consistency. The method for data analysis, average fixed, correlation and regression analysis and structural equation modeling was conducted. The results showed that the use of social software and constructivist classroom Characteristics in the sample studied is higher than average. The use of social software and constructivist classroom Characteristics are taught positive and significant relationship. The results of regression analysis and path analysis showed that the use of the Internet and intranet affect on constructivist classroom Characteristics

Early cretaceous plume–ridge interaction recorded in the band-e-zeyarat ophiolite (North Makran, Iran): New constraints from petrological, mineral chemistry, and geochronological data

The North Makran domain (southeast Iran) is part of the Makran accretionary wedge and consists of an imbricate stack of continental and Neo-Tethyan oceanic tectonic units. Among these, the Band-e-Zeyarat ophiolite consists of (from bottom to top): ultramafic cumulates, layered gabbros, isotropic gabbros, a sheeted dyke complex, and a volcanic sequence. Sheeted dykes and volcanic rocks are mainly represented by basalts and minor andesites and rhyolites showing either normal-type (N) or enriched-type (E) mid-ocean ridge basalt affinities (MORB). These conclusions are also supported by mineral chemistry data. In addition, E-MORBs can be subdivided in distinct subtypes based on slightly different but significant light rare earth elements, Th, Nb, TiO2, and Ta contents. These chemical differences point out for different partial melting conditions of their mantle sources, in terms of source composition, partial melting degrees, and melting depths. U-Pb geochronological data on zircons from intrusive rocks gave ages ranging from 122 to 129 Ma. We suggest that the Band-e-Zeyarat ophiolite represents an Early Cretaceous chemical composite oceanic crust formed in a mid-ocean ridge setting by partial melting of a depleted suboceanic mantle variably metasomatized by plume-type components. This ophiolite records, therefore, an Early Cretaceous plume–ridge interaction in the Makran Neo-Tethys

Middle Meningeal Artery Arising from the Basilar Artery

Various anomalies for the origin of the middle meningeal artery (MMA) have been described in the literature. However, origin of the MMA from the basilar trunk is an extremely rare variant. We report on a 54-year-old female who presented with frequent headaches; magnetic resonance imaging showed a right parietal meningioma. The abnormal origin of the middle meningeal artery from the basilar artery was diagnosed by angiography performed for preoperative embolization of the tumor. We report on the case with a review of the embryologic basis, possible explanations for this aberrant origin, and its clinical implications

Frequency of a very rare 35delG mutation in two ethnic groups of Iranian populations

The 35delG mutation in the Connexin 26 gene (Cx26), at the DNFB1 locus is the most common mutation in the patients with autosomal recessive non-syndromic hearing loss (ARNSHL). We have studied a total of 224 deaf cases from 189 families in two populations of Iran (Sistan va Bluchestan and Hormozgan provinces) by prescreening nested PCR, polyacrylamide gel electrophoresis and consequent direct sequencing method for all cases. The aim of the present work was to find prevalence of GJB2 mutations in the populations studied. Four different GJB2 mutations including 35delG, W24X, R127H and (V27I + E114 G) were identified in 11 of 189 families (5.8). Two polymorphisms (V27I and V153I) also were detected in 14 families. A polymorphism S86T was determined in all cases. Homozygote 35delG mutation was found only in 1 of 189 families (0.5).The rate of Cx26 mutations found in this study was lower than other Iranian populations. So the cause of deafness in the populations studied remains to be detected in other loci or genes. © 2014, Iranian Journal of Public Health. All rights reserved

Frequencies of mutations in the connexin 26 gene (GJB2) in two populations of Iran (Tehran and Tabriz)

While hearing loss has been considered to be a very heterogeneous disorder, mutations in Gap junction beta 2 (GJB2) gene encoding Connexin 26 (Cx26) protein are the major cause of autosomal recessive and sporadic non-syndromic deafness in many populations. In this study, we have investigated the prevalence of the GJB2 gene mutations using nested PCR pre screening strategy and direct sequencing method. Two hundred and seventy two hearing impaired subjects were studied from 210 families obtained from two large cities of Iran (Tehran and Tabriz). Twenty four different genetic variants were identified. Cx26 mutations were found in 53 of the 210 families (25.2) including T8M, 35delG, W24X, R32H, V371, E47X, 167delT, delE120, Y136X, R143W, R184P, 235delC and V27I+E114G. Homozygosity and compound heterozygosity for the Cx26 mutations were found in 39 of 210 (18.5) families. Homozygosity for the 35delG mutation was the most common that causes hearing loss in 28 (13.3) patients. Six novel variants H16R, E101E, K102Q, G200R, 327delG and G130A were detected in this study. As a conclusion, the present survey revealed that the rate of mutation in Cx26 gene in our area is lower than in Europe; nevertheless, this rate is regarded as a considerable cause of deafness in the cited provinces in Iran