Results 1 to 10 of about 14,774 (265)

Comparative analysis of melatonin’s protective role against flattening filter and flattening filter-free X-ray induced nephropathy: focus on apoptosis and SIRT1 modulation

BMC Nephrology
Background Radiation-induced nephropathy is a major concern, particularly for patients undergoing radiotherapy. This study investigates melatonin’s (MEL) protective effects against kidney damage induced by Flattening Filter (low dose rate-LDR) and ...
Kubra Sevgin, Tansel Sapmaz, Esra Erdem, Sude Topkaraoglu, Kubra Basol Baki, Serhat Aras   +5 more
doaj   +1 more source

Comparative Evaluation of Four Stereotactic Radiosurgery Planning Approaches for Treatment of Posterior Choroidal Melanoma

Journal of Medical Radiation Sciences, EarlyView.
This study evaluated four stereotactic radiosurgery planning approaches for posterior choroidal melanoma (CM). Analysis of thirteen CM cases resulted in a clinically meaningful reduction in dose to the brain for Brainlab Elements modulated arcs (BE) and Varian Eclipse HyperArc modulated arcs (HA) compared to Brainlab iPlan dynamic conformal arc therapy
Robert Nigro, Kenton Thompson, Cathy Markham, Adam U. Yeo, Daniel Sapkaroski, Claire Phillips   +5 more
wiley   +1 more source

In-Situ Monitoring and Diagnosing for Fused Filament Fabrication Process Based on Vibration Sensors

Sensors, 2019
Fused filament fabrication (FFF) is one of the most widely used additive manufacturing (AM) technologies and it has great potential in fabricating prototypes with complex geometry.
Yongxiang Li, Wei Zhao, Qiushi Li, Tongcai Wang, Gong Wang   +4 more
doaj   +1 more source

A MATLAB‐Based Tool for Stress‐Guided Path Planning in Continuous Fiber Reinforced 3D Printing

Macromolecular Symposia, EarlyView.
ABSTRACT Additive manufacturing of continuous fiber‐reinforced composites offers exciting opportunities for the design of lightweight, high‐performance structures. This paper presents a MATLAB‐based computational tool for the automated generation of paths for reinforcing fibers in fused filament fabrication (FFF) processes, guided by the principal ...
Andrea Sellitto, Antonio Garofano
wiley   +1 more source

Investigation of the Critical Overhang Angle in Fused Filament Fabrication Technology

Macromolecular Symposia, EarlyView.
ABSTRACT In fused filament fabrication, overhangs are challenging because each deposited layer requires partial support from the previous layer. The frequently cited 45° guideline for unsupported printing originates from empirical practice and does not consistently represent process‐specific behavior.
Nicolae Razvan Mititelu, Cosmin Gabriel Grădinaru, Vasile Merticaru, Marius Ionut Rîpanu, Roxana Gabriela Hobjala   +4 more
wiley   +1 more source

Sustainable Design of Palm‐ Inspired Urban Lighting System Using Hybrid Materials and 3D Printing

Macromolecular Symposia, EarlyView.
ABSTRACT This paper presents the design and development of a sustainable, bio‐inspired urban lighting system based on renewable energy sources and eco‐friendly materials. The aesthetic and functional development of the project has been defined in accordance with stylistic requirements rooted in biomimetic and eco‐design principles. The project explores
Angela Russo, Valerio Acanfora, Francesco Fittipaldi, Aniello Riccio   +3 more
wiley   +1 more source

Evaluation of photon beam softening characteristics in flattening-filter-free mode of medical electron linear accelerator by Monte Carlo simulation

四川大学学报. 自然科学版, 2023
Monte Carlo simulations were used to evaluate the photon beam softening characteristics of medical electron linear accelerators operated in flattening filter-free mode (FFF) under different energies and field sizes through.
CHEN Lei, LI Chang-Hu, FU Yu-Chuan, HAN Ji-Feng   +3 more
doaj  

Experimental investigation of cold and melt crystallization of polyactic acid (PLA) and its critical influence on mechanical properties Experimentelle Untersuchungen von Kalt‐ und Schmelzkristallisation von Polyactid (PLA) und deren kritischer Einfluss auf die mechanischen Eigenschaften

Materialwissenschaft und Werkstofftechnik, EarlyView.
Based on the DSC investigations, suitable annealing temperatures were identified to promote the crystalline fraction of PLA. The 3D‐printed specimens were annealed at these crystallization temperatures. An increasing crystalline fraction led to an improvement in the material's strength.
B. Yagimli, M. Menzel, M. A. Abdelmoniem, M. Wiecha   +3 more
wiley   +1 more source

Crystallinity, Porosity, and Microstructure of Polyphenylene Sulfide Composite Parts Fabricated by Filament‐Extrusion Additive Manufacturing

Polymer Composites, EarlyView.
High‐performance PPS composites for FFF: formulation and characterization linking microstructure and crystallization to adhesion and mechanical properties. ABSTRACT Polyphenylene sulfide (PPS) was compounded with recycled carbon fibers (rCF) and thermal black (TB) particles, followed by injection molding (IM) and extrusion of the compounded composites ...
Dogan Arslan, Mihaela Mihai, Daniel Therriault, Martin Lévesque   +3 more
wiley   +1 more source

Multi‐Scale Characterization of PLA Composites With Natural‐Based Reinforcements: From Filament to 3D‐Printed Parts

Polymer Composites, EarlyView.
Thermal, microstructural, and mechanical characterization of 3D‐printed PLA composite parts. ABSTRACT To address plastic waste and agricultural residue underutilization, this study evaluates the thermal (DSC and FTIR), microstructural (SEM), and mechanical behavior of polylactic acid (PLA) reinforced with flax fibers and olive pit particles, processed ...
P. N. B. Reis, L. Távara, M. Muñoz‐Reja, M. T. Aranda, F. Nur Ainin, M. D. Azaman, L. M. Ferreira   +6 more
wiley   +1 more source