Despite substantial progress in recent years to improve the design guidance for high strength steel (HSS) structural elements, this has mainly been ambient conditions with their fire response still need of further research. Accordingly, paper reports on an investigation into performance unprotected HSS hollow section columns fire. Finite element models made from square, circular and rectangular...

17-4ph stainless steel is a martensitic precipitation hardening stainless steel that provides an outstandingcombination of high strength, good corrosion resistance, good mechanical properties, good toughness in both base metal and welds, and short time, low-temperature heat treatments that minimize warpage and scaling. this valuable alloy is widely used in the aerospace, nuclear, chemical, petr...

In this study, the performances of end mills used widely in machining were investigated case their reuse by sharpening. For purpose, at CNC vertical center, slot milling processes carried out with HSS (used once) on AISI 1050 manufacturing steel having two different diameters and carbide (again D2 (2080) cold work tool diameters. Machining experiments made using four cutting speeds, feed depths...

Plants produce specialized metabolites for their defence. However, specialist herbivores adapt to these compounds and use them for their own benefit. Plants attacked predominantly by specialists may be under selection to reduce or eliminate production of co-opted chemicals: the defence de-escalation hypothesis. We studied the evolution of pyrrolizidine alkaloids (PAs) in Apocynaceae, larval hos...

PURPOSE Beta igh3 is a transforming growth factor-beta-inducible cell adhesion molecule and its mutations are responsible for human autosomal dominant corneal dystrophies. Previously, we have studied the molecular properties of beta igh3 in vitro and reported that beta igh3 polymerizes to form a fibrillar structure and interacts with several extracellular matrix proteins including type I collag...

INTRODUCTION This study aimed to evaluate whether a low platelet count is a good surrogate marker of hepatosplenic schistosomiasis (HSS) in a rural area of Brazil. A small district in southeastern Brazil, with a population of 1,543 individuals and a 23% prevalence of schistosomiasis, was selected for this investigation. METHODS In July 2012, 384 volunteers were subjected to clinical, ultrason...

The aim of the present study is to facilitate machining process cast steel (HSS) through cooling and lubricating by compressed air with liquid in three directions consisting (oil, soap, carbolic acid, sculpture) was compared lubricant one direction at different cutting speeds (2.08, 6.25, 10.4, 14.16 m/sec). Auto Desk Inventor programme used simulate applying forces tool's shear surface. interf...

Abstract The study involves coating the high-speed steel (HSS) tool with cubic Boron via electroless nickel co-deposition. surface of Ni-CBN was deposited where process involved chemical reactions as ceramic CBN powders embedded within layer. By introducing process, cost and procedure could be simplified. deposition has been extensively practised in industry, most prevalent offers excellent cor...

This optimization investigation focused on the reinforced metal matrix composite of aluminium alloy. Novel this work is to fabricate AA6066 with HSS and Cu, continually conduct machining tests, evaluate tool wear, surface roughness, thrust force stir-casted specimens. The has 90 percentage alloy reinforcement six high-speed steel four copper made by casting method. fabricated composites’ turnin...