A proper composition of stiffness and ductility parameters is required to obtain a resistant and economic structure. Accordingly, Chevron Knee Braced Frame (CKBF) seems appropriate due to its proper seismic performance. The advantage of this system comes to having the capability of rapid and cheap replacement of chevron knee elements after an earthquake occurs. In this research, response modifi...

Tailor’s Bunion (TB) is a prominence of the Vth metatarsal bone at the base of the little toe. Scarf Osteotomy (SO) is a very useful technique to treat TB and in some cases it represents the first-rate surgical treatment for this deformity. The aim of this paper is to describe this little known pathology, analyze all surgical techniques of the past and review controlled trials or reviews that c...

The muscle segments of fish have a folded shape, termed a chevron, which is thought to be optimal for the undulating body movements of swimming. However, the mechanism shaping the chevron during embryogenesis is not understood. Here, we used time-lapse microscopy of developing zebrafish embryos spanning the entire somitogenesis period to quantify the dynamics of chevron shape development. By co...

This study is devoted to seismic collapse safety analysis of performance based optimally seismic designed steel chevron braced frame structures. An efficient meta-heuristic algorithm namely, center of mass optimization is utilized to achieve the seismic optimization process. The seismic collapse performance of the optimally designed steel chevron braced frames is assessed by performing incremen...

The bacterial colicin-immunity proteins Im7 and Im9 fold by different mechanisms. Experimentally, at pH 7.0 and 10°C, Im7 folds in a three-state manner via an intermediate but Im9 folding is two-state-like. Accordingly, Im7 exhibits a chevron rollover, whereas the chevron arm for Im9 folding is linear. Here we address the biophysical basis of their different behaviors by using native-centric mo...

In 1901 the Gulf Refining Company was chartered to provide refining and sales support to the Spindletop oil field in southeast Texas (Gulf Oil History, 2003). A refinery was built immediately after on a 4,000 acre site. The facility was acquired in 1985 by Chevron as a part of a merger with Gulf (‘Congratulations Premcor 100 Years,’ 2001). In February 1995, Chevron sold the Port Arthur plant wi...

: To evaluate the clinical and functional outcome of intra-articular distal humerus fractures treated with locking compression plates. A total number 25 patients intraarticular humerus, from March 2021 to September 2022 were enrolled in study. All subjected relevant investigations after which taken up for surgical fixation fracture bicolumnar plates applied orthogonal configuration through a po...

The Chevron doctrine’s apparent simplicity has long captivated judges, lawyers, and scholars. According to the standard formulation, Chevron involves just two straightforward steps: (1) Is a statute clear? (2) If not, is the agency’s interpretation of the statute reasonable? Despite the influence of this two-step framework, Chevron has come under fire in recent years. Some critics bemoan what t...

Graphene nanoribbons (GNRs) have received a great deal of attention due to their promise for electronic and optoelectronic applications. Several recent studies have focused on the synthesis of GNRs by the bottom-up approaches that could yield very narrow GNRs with atomically precise edges. One type of GNRs that has received a considerable attention is the chevron-like GNR with a very distinct p...