نتایج جستجو برای ' UES '

The global higher transportation network operates about 2.5 million bridges all over the world. Current bridge management systems rate them using various methodologies and approaches. Based on studies in the US Federal Highway Agency (FHWA), about 30% of bridges are rated as being deficient, with only a portion of these being deficient for structural reasons. For this reason, it is necessary to focus on bridges that definitely require structural health diagnosis, improvement and monitoring....

EXPERIMENTAL INVESTIGATION OF PERFORATING MASONRY BRICK WALLS IN CENTER CORE REHABILITATION METHOD; DEVELOPMENT OF TECHNIQUES AND EQUIPMENT   An advantageous method for retrofitting of brick unreinforced masonry buildings is center core. In this method vertical holes with given intervals are perforated through the brick walls to the footing and then reinforcing steel bars are embedded in the holes and grout will be injected finally to create bond strength between wall and bars. This metho...

 Pattern recognition was one of the first methods used in geophysical application and has found wide applications in seismology. This paper is presented seismic spatial patterns recognition of west Alborz by using historical earthquake catalog data with data mining techniques. In this paper, clustering techniques are used to obtain patterns of model in behavior of seismic temporal data that can help to predict large earthquakes its future behavior by the past behavior of earthquake catalogs...

 Performance-Based Earthquake Engineering (PBEE) has appeared as a basis of modern earthquake engineering as it attempts to improve deciding about seismic risk by methods that are more informative than current approaches. However, little work has been carried out investigating the seismic response of buried steel pipelines within a performance-based framework. In this research the seismic demands of buried steel pipelines are studied in a performance-based context. Several nonlinear dynamic...

 A rapidly expanding literature broadly documents the impact of biophysical cues on cellular behaviors. In spite of increasing research efforts in this field, the underlying signaling processes are poorly understood. One of the candidate molecules for being involved in mechanotransduction is focal adhesion kinase (FAK). To examine the role of FAK in the response of immortalized human corneal epithelial (hTCEpi) cells to topographic cues, FAK was depleted by siRNA transfection. Contrary to e...

 Challenges remain in the generation of heterogeneous tissues and the repairing of interfacial tissue between soft and hard tissues. The development of tissue engineering scaffolds with gradients in composition, structure, mechanical and chemical properties is essential to modulate cellular behaviors in a graded way and potentially support the growth of functionally graded tissues. Integrated with the three-dimensional (3-D) nanofibrous skeletal structure of native extracellular matrix, ele...

 Wear particle-induced orthopaedic prosthesis loosening is associated with elevated osteoclast activity. The immunoreceptor tyrosine-based activation motif (ITAM)-related molecules OSCAR, FcRγ, TREM2 and DAP12 are important for osteoclast formation. The aim of this study was to determine if these molecules are involved in peri-implant loosening by investigating their expression in peri-implant tissues obtained at revision of joint replacement components containing polyethylene (PE) we...

 Health care workers are attributed to the group at highest risk of occupationally acquired bloodborne diseases as the result of contact with blood and body fluids. A cross sectional study was conducted between November 2009 and February 2010 in the North of Portugal, to identify potential risk factors for needlestick and sharps injuries. A questionnaire was provided to 363 health care professionals. Logistic regression was used to identify risk factors associated to needlestick and sharps ...

 The aim of our work was to study the accidents and close call situations connected to the use of mobile phones. We have analyzed how the accidents/close call situations are connected to background information, in particular age, gender and self-reported symptoms. The study was carried out as a cross-sectional study by posting the questionnaire to 15,000 working-age Finns. The responses (6121) were analyzed using the logistic regression models. Altogether 13.7% of respondents had close call...

 Single carriageway multilane roads are not, in general, a very safe type of road, mainly because of the high number of seriously injured victims in head-on collisions, when compared with dual carriageway multilane roads, with a median barrier. In this paper the results of a study on the effect of the application of several low cost engineering measures, aimed at road infrastructure correction and road safety improvement on a multilane road (EN6), are presented. The study was developed...