Metallurgical and Materials Engineering (E-Journal)
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Dynamic analysis of residential Building with and without Bracing for Zone IV (G+10)
Get PDFEarth is the one of the planet where all types of creatures are easily survive. But earthquake is most destructive phenomena of nature and destroy the earth. So we have to know the about earthquake and their effect on the residential Building. And research for prevention of the building due to earthquake. In this paper we are analyzed building for zone iv and see the result how much affected building by earthquake, and for reduce the effect of earthquake provide X bracing in the different arrangement in building. And analyzed dynamic analysis by Staad Pro vi 8i
Prioritization of Educational Strategies in Metallurgy and Materials for Pedagogical Innovation through the Régnier's Abacus
Get PDFPedagogical innovation in the teaching of metallurgy and materials is essential to improve educational quality and respond to the industrial and academic sectors. The implementation of effective educational strategies requires methodologies that promote active learning, the incorporation of information and communication technologies, and curricular updating. This work makes an approach to the prioritization of educational strategies in metallurgy and materials using a literature review, semi-structured interviews, and the application of the Régnier's abacus as a way of evaluating and reaching a consensus.
The results highlighted the need to incorporate active methodologies such as project-based learning and collaborative learning in virtual environments; this need also led to the conclusion of the need for teacher training and the integration of digital tools such as computer simulations and virtual laboratories, as well as the urgency to update metallurgy and materials curricula. While this work can provide information to the educational system for decision-making, it is clear that further research is needed to address the impact of these strategies or how they can be incorporated into different training contexts
Global Regulatory Affairs Specialist With Expertise In Pharmaceutical Inspections
Get PDFPharmaceutical inspections are crucial in ensuring that products comply with stringent regulatory standards for safety, quality, and efficacy. This article focuses on the role of global regulatory affairs specialists, who play a key part in facilitating these inspections and maintaining compliance with international standards. The scope of the paper covers the responsibilities of regulatory affairs professionals in pharmaceutical inspections, the frameworks governing these processes, and the ongoing challenges they face in a dynamic global environment. It also explores the importance of emerging global harmonization efforts and their impact on inspection practices. Through an in-depth look at the responsibilities of regulatory affairs specialists, this paper emphasizes the necessity of adherence to Good Manufacturing Practices (GMP), quality control, and inspection readiness. It highlights key international authorities such as the U.S. FDA, EMA, WHO, and ICH, and explores how their guidelines shape global pharmaceutical inspections. The article also provides insights into the complexities of navigating regulatory variances across regions and the impact of technological advancements on inspection standards. Finally, best practices for managing inspections, such as proactive inspection readiness, continuous training, and strong collaboration with regulatory authorities, are discussed to ensure efficient and successful pharmaceutical inspections
Chemical Hazards in Hospitals: Risks, Regulations, and Protective Measures
Get PDFThis article examines chemical hazards in hospital settings, focusing on risks from therapeutic, diagnostic, sterilization, and cleaning agents. Healthcare workers face exposure through inhalation, skin contact, or ingestion, with risks compounded by secondary contamination scenarios (e.g., chemically contaminated patients in emergency departments). Key hazards include formaldehyde (pathology), anesthetic gases (operating rooms), and antineoplastic drugs (pharmacies), linked to respiratory, dermatological, and reproductive health effects. The review highlights global regulatory frameworks (e.g., EU REACH, U.S. OSHA) and Saudi Arabia’s adoption of GHS standards. Effective risk management requires environmental/biological monitoring, engineering controls (ventilation, scavenging systems), and staff training. Challenges in Saudi hospitals—extreme climate, multinational workforce, and rapid healthcare expansion—necessitate tailored strategies. The article underscores the need for stringent safety protocols to protect workers and patients
Experimental Investigation on High Performance Green Concrete (HPGC) Produced with Iron Filings
Get PDFThe acronym "HPGC" refers to "high performance green concrete." This breakthrough is significant because it moves the industry closer to its goal of replacing concrete with eco-friendly alternatives that claim superior mechanical qualities, thereby making concrete a more sustainable building material. When working with metal, a fine powdery dust known as "iron filings" is inevitably created. The purpose of this study was to evaluate the usefulness of iron filings as a fine aggregate in building projects. An experiment was conducted to examine the mechanical iron filings' effects on concrete's characteristics utilised as a supplement to sand. Using a range of sand replacement percentages (0% (control mix), 10% (treatment mix), 20% (treatment mix), and 30% (treatment mix)), the compressive, split-tensile, and flexural strengths of 35 concrete specimens consist of cubes, cylinders, and prisms were tested after 28 days of treatment in water. The findings indicated that the mechanical qualities of HPGC were enhanced when iron filings were used in place of sand, but that the concrete's slump value and workability were diminished. Therefore, only 30% of the sand (fine particles) should be substituted by weight with iron filings in the concrete mix, depending on the desired strength attribute. In this case, the concrete's compressive strength is increased by 13.2%, split-tensile strength by 21.1%, and flexural strength by 49.88%, all by replacing 30% of the sand (fine particles) with iron filings. Therefore, employing iron filings in concrete will help with recycling and waste reduction
Effect of SiC Particles on Mechanical Properties of Stir-Friction Welded Al/SiC Composites Fabricated by Lost Foam Casting
Get PDFThis study investigates the effects of inserting sub-micron hard silicon carbide (SiC) particles in a welded zone of aluminum (Al)/SiC metal matrix composite. Two parts of Al/35 wt. % SiC composites fabricated by lost foam casting (LFC) were welded together using friction stir welding (FSW) process. As reinforcement, 5 wt. % of SiC particles were inserted in the welding zone of the composites to enhance their microhardness and tensile strength as well as alleviate their thermal shock and weight loss/abrasion resistance. The optical images showed a good dispersion of SiC particles in the welded zone that resulted in a higher microhardness and tensile strength. The presence of well-dispersed SiC particles exhibited a good shock resistance of the composite even at higher temperatures, and lower weight loss (better corrosion performance) under salt spray test and a harsh 5% w/v NaCl solution for the presence of a hard equilibrium SiC and Al4C3 phases with further addition of SiC particles
Red-Emitting Phosphors for White LEDs: Optimizing Eu³⁺ Doping via Microwave-Assisted Synthesis
Get PDFEuropium-doped calcium molybdate phosphors CaMoO4:xEu3+ were made using the microwave-assisted solid state metathesis mode to enhance their suitability for near-UV-based white LEDs. X-ray diffraction analysis confirmed the formation of well-crystalline phosphors with a scheelite-type structure, indicating uniform incorporation of Eu3+ ions into the crystal lattice. The phosphors exhibited strong photoluminescence with a prominent emission peak at 618 nm under 392 nm excitation, attributed to the 5D0 → 7F2 transitions of Eu3+ ions. Optimization experiments determined that an 0.08mol% doping concentration of Eu3+ ions maximized the luminescence intensity, showcasing efficient energy transfer mechanisms within the material. The phosphors demonstrated favorable color rendering capabilities, as evidenced by their chromaticity coordinates (x = 0.668, y = 0.323), which closely approached NTSC standards. Fluorescence lifetime analysis revealed a mono-exponential decay curve with a lifetime of 0.401 ms for the 5D0 excited state of Eu3+. Overall, microwave-assisted synthesis enabled the production of homogeneous phosphors with fine structural characteristics, offering significant advantages in terms of efficiency and performance for future applications in solid-state lighting devices. These phosphors hold promise for enhancing the red component in LED technology, contributing to advancements in energy-efficient and high-quality lighting solutions
Exploring the Role of Digital Dentistry Materials in Enhancing Innovation and Localization Efforts in Saudi Arabia
Get PDFThis study explores the transformative impact of digital dentistry technologies on dental practices in Saudi Arabia, emphasizing their role in innovation and localization efforts under the Vision 2030 framework. Digital tools such as CAD/CAM systems, 3D printing, and artificial intelligence have revolutionized patient care, improving precision, efficiency, and aesthetic outcomes while reducing dependency on imported materials and technologies. The paper highlights various case studies from Saudi dental practices, showcasing the adoption of these technologies to enhance workflows, patient satisfaction, and operational efficiencies. Despite significant advancements, challenges such as high infrastructure costs, training requirements, and material supply issues persist. The study concludes by offering actionable recommendations to overcome these barriers, fostering capacity building, localized solutions, and strategic investments in digital dentistry, thus paving the way for a modern, sustainable dental care system aligned with Saudi Arabia's goals for technological and economic growth
Artificial Neural Network (ANN) Backpropagation to Forecast 100% Renewable Energy in North Sumatra
Get PDFNorth Sumatra possesses abundant natural resources, including renewable energy sources such as water, geothermal, biomass, biogas, waste and solar energy. However, currently, these resources are not optimally utilized for electricity generation, with fossil fuel plants still dominating the energy mix. This research aims to establish an objective function model to optimize the use of renewable energy sources in North Sumatra by phasing out fossil fuel plants. The method employed in this study is a statistical approach based on secondary data from PT. PLN Persero in the North Sumatra region, which was optimized using the Firefly (FA) and Particle Swarm Optimization (PSO) algorithms. Analysis of the results reveals that the lowest absolute value of θ for |FA/RE–Thermal| in 2064 is 335.404192, while the lowest absolute value for |PSO/RE-Thermal| in 2065 is projected to reach 689.475978. A smaller absolute value of θ indicates closer proximity to the optimum value. Therefore, renewable energy optimization using the Firefly algorithm is predicted, using the Backpropagation Neural Network method, to be achievable in 2064, while with the PSO algorithm, it is expected to be realized in 2065, thus eliminating the need for thermal generators. The θ value serves as a parameter for measuring the discrepancy between predicted and actual values, with a smaller θ value indicating closer proximity to the optimum value. In the context of renewable energy optimization, the optimum value represents the level of renewable energy utilization required to supplant thermal generation. This research contributes by predicting that achieving 100% renewable energy utilization in North Sumatra can be attained by 2064 using the Firefly algorithm, based on the Backpropagation Neural Network method, and by 2065 using the PSO algorithm
Navigating Acute Invasive Fungal Sinusitis in COVID-19 Cases: Clinical Insights and Strategies
Get PDFAcute invasive fungal sinusitis (AIFS) is a life-threatening condition that has gained prominence during the COVID-19 pandemic, particularly among immunocompromised patients or those with poorly controlled diabetes mellitus. The interplay between COVID-19-induced immunosuppression, steroid use, and hyperglycemia has created a fertile ground for opportunistic fungal infections, such as mucormycosis and aspergillosis. Early diagnosis and timely intervention are crucial to improving outcomes.
Management of AIFS in COVID-19 patients involves a multidisciplinary approach encompassing prompt clinical and radiological diagnosis, aggressive surgical debridement, and antifungal therapy. High-resolution imaging, nasal endoscopy, and histopathological confirmation are pivotal in identifying the extent of invasion. First-line antifungal therapy includes liposomal amphotericin B, while second-line options, such as posaconazole or isavuconazole, are used in refractory cases or as adjunctive therapy. Glycemic control, cessation of immunosuppressive therapy when feasible, and addressing underlying comorbidities are essential supportive measures.
Recent insights suggest that early intervention and tailored treatment protocols significantly enhance survival rates in affected patients. This review emphasizes the importance of heightened clinical vigilance, rapid diagnosis, and individualized management strategies to combat the surge of AIFS in COVID-19 patients, aiming to improve survival outcomes and reduce morbidity associated with this devastating condition