This paper aims to study the composite action on web-post buckling (WPB) resistance of cellular beams with precast hollow core slab (PCHCS) units and concrete topping (PCHCSCT). Geometrical material non-linear analyses are performed. A parametric is developed, varying opening diameter, width shear stud spacing, single double row. It was found that models row studs showed global greater than or ...

Corresponding author: Jong In Oh, M.D., Department of Anesthesiology and Pain Medicine, National Police Hospital, Garakbon-dong, Songpagu, Seoul 138-708, Korea. Tel: 82-2-3400-1323, Fax: 82-2-3400-1270, E-mail: [email protected] This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http:// creativecommons.org/licenses/by-nc/3.0/), wh...

Guard cells of onion irradiated with broad-band blue light display a green intrinsic fluorescence. The fluorescence has been found in eleven species of Allium, but it has not been observed in any other monocot or dicot examined. The fluorescence occurs only in guard cells and is absent in neighbouring epidermal cells. During development it is first apparent in guard mother cells soon after the ...

The objective of this investigation is to develop an economical and efficient reinforcement scheme for large web openings in cold-formed steel (CFS) joists flexural zones that would restore the original moment resistance section. This considered commonly used floor North American CFS construction. Tests on webs with no circular square located at mid-depth revealed may reduce strength by 23%. A ...

This paper reviews the research advancements and design practices related to structural web crippling response of lipped Cold-Formed (CF) carbon steel, stainless aluminium channels with perforations. The differs among each material based on non-linear stress-strain characteristics degree strain hardening. Therefore, reduction in strength web-perforated CF channel sections made different materia...

The PBL (Perfobond Leiste) shear connector has the advantages of high bearing capacity and strong constraint ability; however, traditional weak axis problems, its stiffness is large, resulting in deformation ability. To this end, paper proposes a new type flange triple-web key obtains key’s mechanical properties failure mechanism through push-out test. results show that mode steel plate on web ...

background and aims. the aim of this study was to assess the opening torque of grooved and non-grooved screws made of shape memory alloys (sma) for fixation of mandibular fractures. materials and methods. in this in vitro study the opening torques of ten sma screws with grooves and ten sma screws without grooves were compared in 20 holes (10 holes for grooved screws and 10 holes for non-grooved...

with the increased confidence in the use of the internet and the world wide web, the number of electronic commerce (e-commerce) transactions is growing rapidly. therefore, finding useful patterns and rules of users’ behaviors has become the critical issue for e-commerce and can be used to tailor e-commerce services in order to successfully meet the customers’ needs. this paper proposes an appro...