
Healthcare

A review of upper limb robot assisted therapy techniques and virtual reality applications
Impairments in the sensorimotor system negatively impact the ability of individuals to perform daily activities autonomously. Upper limb rehabilitation for stroke survivors and cerebral palsy (CP) children is essential to enhance independence and quality of life. Robot assisted therapy has been a bright solution in the last two decades to promote the recovery process for neurological disorders patients. Nevertheless, defining the optimum intervention of robot assisted therapy (RAT) in different cases is not clear yet. With this aim, the presented study reviewed the current literature on RAT

Influence of high-strain-rate compression and subsequent heat treatment on (TiNbZr)89(AlTa)11 refractory high-entropy alloys: Dynamic-mechanical behavior and microstructural changes
This study explored the dynamic-mechanical behavior of a novel low-density (TiNbZr)89(AlTa)11 refractory high-entropy alloy (RHEA) across strain rates ranging from 1.0 × 103 to 3.5 × 103 s−1. A significant increase in the yield and ultimate compressive strengths with rising strain rates up to 3.0 × 103 s−1 was observed and attributed to enhanced dislocation activities and stress-induced microstructural transformations. The formation of the B2 phase and Zr5Al3 precipitates was found to be crucial in bolstering the alloy strength at high strain rates. Beyond strain rates of 3.0 × 103 s−1, a

Effects of hot extrusion texture on anisotropy in microstructure and mechanical properties of spray formed Al–Zn–Mg–Cu 7055 aluminum alloy
The Al–Zn–Mg–Cu 7055 aluminum alloy was meticulously fabricated through spray forming (SF) technology, followed by hot extrusion and T76 treatment. This comprehensive process allowed for a thorough investigation of its microstructural characteristics, mechanical properties, and fatigue behavior. Post-treatment analysis revealed that the SF-7055 aluminum alloy exhibited no notable segregation or porosity defects, ensuring its exceptional quality and reliability. The microstructural analysis revealed a uniform distribution of refined grains and dispersed precipitates, contributing to the

High-Entropy Alloys: Design, Manufacturing, and Emerging Applications
High-Entropy Alloys: Design, Manufacturing, and Emerging Applications presents cutting-edge advances in the field of these materials, covering their mechanics, methods of manufacturing, and applications, all while emphasizing the link between their structure/microstructure and functional properties. The book starts with a section on the fundamentals of high-entropy alloys (HEAs), with chapters discussing their thermodynamics, subgroups (transition metal; refractory; ceramics; metallic glasses and more), physical metallurgy, and microstructural characterization. The next section features

Enhancing mechanical properties of Al-Zn-Mg-Cu alloys: The impact of high strain rate compression and subsequent heat treatment on microstructural evolution
This study presents a comprehensive examination of the Al-Zn-Mg-Cu alloy, focusing on the effects of high strain rate dynamic compression and heat treatment on its performance. The research aimed to understand the underlying microstructural mechanisms contributing to the enhanced mechanical properties of the alloy, which is critical for applications in aerospace and automotive industries. High strain rate dynamic compression tests, conducted at 3.0 × 1000 s−1, revealed a significant increase in both yield strength and ultimate compression strength of the Al alloy, which was accompanied by a

Waste Management Application using UML
Solid waste creation will continue to grow both in amount and pace as long as there are human activities. The consequences of improper solid waste management are highly harmful to the environment and human health, requiring immediate action to stabilize the situation. This research represents a solid waste collection management system through several unified modelling language (UML) models. The motivation for utilizing the UML modelling approach in solid waste collection management is twofold: first, the environmental importance of solid waste management collection, second the efficiency of

Polylactic acid-based bionanocomposites: Synthesis, properties, and applications
The awareness of the severe environmental consequences of petroleum-based plastics has expanded globally. Therefore, academic and industrial researchers have been extremely encouraged to investigate replacing traditional petrochemical-based plastic products with biobased and biodegradable alternatives in order to minimize fossil fuel consumption. Among the biopolymers available nowadays, polylactic acid (PLA) is one of the tops produced and seems to be a promising candidate to commercially replace many nondegradable polymers. Although PLA offers comparable mechanical properties, inherent

Organic Binding Materials in Cotton Waste
The continued logging for hardwood in subtropical rainforests is causing deforestation and the destruction of diverse environmental ecosystems. Synthetic plastics and particle boards containing synthetic binders such as formaldehydes are alternatives to hardwood, both of which are harmful to the environment and human health. To eliminate wood logging, various biomaterials could be used as promising alternatives to wooden materials. Cotton have been shown to be a viable alternative to various types of wood. Binders are essential in the production of composite wood from cotton. Natural
Analysis of musculoskeletal disorders in personal care industries in Egypt
The increase in the complexity of operations in personal care industries in Egypt forced the ergonomic experts to propose various tools to analyze the human errors and eliminate the most dangerous operations according to the international standards of safety and ergonomics. International references such as the Rapid Upper Limb Assessment (RULA) and Rapid Entire Body Assessment (REBA) analysis are performed to investigate different postures as well as Computer Aided Three-Dimensional Interactive Application (CATIA) and Maynard Operation Sequence Technique (MOST softwares). A modified scissor

Finite Element Analysis and Experimental Study of Manufacturing Thin-Walled Five-Branched AISI 304 Stainless Steel Tubes with Different Diameters Using a Hydroforming Process
This study aims to investigate the feasibility of hydroforming (HF) technology coupled with response surface optimization for producing high-quality five-branched AISI 304 stainless steel tubes with different diameters, addressing the shortcomings of traditional manufacturing processes. Conventional techniques often result in issues with multiple consumables, low precision, and subpar performance. The research focuses on finding optimal forming parameters for a more effective process. Initial attempts at a five-branched tube proved unfeasible. Instead, a multi-step forming approach was adopted