A convenient family member of composite columns is concrete filled double skin tube (CFDST); it contains two tubes concentric steel and also shell that there between them. The superior or equal potential offering characteristics CFDST are more than counterparts classical (CFST). purposes the present study to provide experimental investigation results into prestressed load-carrying capacity colu...

Abstract In order to study the seismic performance of steel tube bundle composite shear wall with different constructions. Based on failure tests three specimens without end, studs and stiffener, a feasible numerical model is established by ABAQUS. The hysteresis curve energy dissipation coefficient, skeleton ductility were further analyses varying axial compression ratio spacing internal diaph...

Abstract To improve the behavior of hollow concrete filled steel tube, a novel type reinforced circular tubular member (RHCFST) was put forward and its axial studied. The finite element analysis model 12 RHCFST short columns under compression established by using ABAQUS. influence tube’s strength wall thickness, diameter bar with normal strength, sandwich concrete’s thickness on mechanical prop...

Abstract The European Commission's Digital Economy and Social Index (DESI) is a composite index that aims to measure the state of digital transformation in Union (EU) its member states based on five principal dimensions. For each dimension, Commission assigns predefined weights determine ranking countries. following paper ranks using Technique for Order Preference by Similarity Ideal Solution (...

Current research refers to videogames as a constant variable. However, games today are designed to be highly interactive and versatile: two players may be using the same videogame, but as a result of different using patterns, the game will not necessarily encompass the same content and gameplay. The current study examined the possible relationship between psychopathology and in-game playing pat...

This paper introduces a new technique for identifying composite design patterns from existing patternbased designs. We propose two pattern metrics: pattern coverage and overlapping that can help detect a composite pattern. The effective composite patterns reflect quality properties that are considered desirable in the solution for a given problem domain and selected programming paradigm. To ide...

Objective: To investigate the repair bond strength of fresh and aged nanohybrid and hybrid composite resins using a universal adhesive (UA). Materials and methods: Fresh and aged substrates were prepared using two nanohybrid (Venus Pearl, Heraus Kulzer; Filtek Supreme XTE, 3 M ESPE) and one hybrid (Z100, 3 M ESPE) composite resin, and randomly assigned to different surface treatments: (1) no tr...

Micro/mesoporous zeolitic composites (MZCs) represent an important class of hierarchical zeolitic materials that have attracted increasing attention in recent years. By introducing an additional mesoporous phase interconnected with the microporosity of zeolites, a hierarchical porous system of MZCs is formed which facilitates molecular transport while preserving the intrinsic catalytic properti...

This study was designed to test the hypothesis that the flowable/dentin interface has the weakest bond and highest frequency of failure when a resin-based composite is repaired using a flowable composite. Comparing three specific groups--dentin, flowable composite, and hybrid composite-under the Kruskal-Wallis test showed that the mean bond strength values at the flowable/dentin interface and w...

nanosized metal oxides dispersed polymer composites constitute a fascinating class of polymer composite materials. synthesis of such composite materials through solvent casting enhances the polymer synthetic technology. solvent casting method was used to prepare cobalt oxide (co3o4) dispersed poly (methyl methacrylate) (pmma) nano composite. x-ray diffraction tool is used to know the structural...