Results 31 to 40 of about 6,049 (209)

Symmetry‐Guided Multifunctional Acoustic System Based on Mechanically Actuated Sonic Crystals

Advanced Engineering Materials, EarlyView.
This study presents the design, simulation, and experimental validation of amultifunctional acoustic metamaterial based on rotationally engineered sonic crystals.By tuning cylinder orientations, controllable band gaps and six distinct functionalities—including switching, topological insulation, beam splitting, and logic operations—areachieved ...
Yuanyan Zhao, Sriram Subramanian, Gianluca Memoli   +2 more
wiley   +1 more source

New Methods for Imaging Evaluation of Chest Wall Deformities

Frontiers in Pediatrics, 2017
AimThe purpose of this study is to describe the development of an external 3-dimensional (3D) scanner as a noninvasive method for imaging chest wall deformities.
Ana Lain, Laura Garcia, Carlos Gine, Olivier Tiffet, Manuel Lopez   +4 more
doaj   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 more
wiley   +1 more source

Pectus excavatum coexisting with straight back syndrome in children: A five-case series

Journal of Pediatric Surgery Case Reports
Background: Pectus excavatum (PE) and straight back syndrome (SBS) are chest wall deformities that reduce thoracic volume and compress mediastinal structures through different mechanisms.
Divya Mahali, Rajkamal Vishnu
doaj   +1 more source

Description of a new clinical syndrome: thoracic constriction without evidence of the typical funnel-shaped depression—the "invisible" pectus excavatum

Scientific Reports, 2023
Pectus excavatum (PE) is a congenital malformation with a funnel-shaped depression of the sternum that can lead to cardiac symptoms. However, there are patients with thoracic constriction (defined as elevated Haller-Index > 3.25 determined by cardiac ...
Anna Hohneck, Uzair Ansari, Michèle Natale, Karsten Wittig, Daniel Overhoff, Philipp Riffel, Michael Boettcher, Ibrahim Akin, Daniel Duerschmied, Theano Papavassiliu   +9 more
doaj   +1 more source

Comparison of several alternatives for the management of severe pectus excavatum in the Nuss procedure

Asian Journal of Surgery, 2021
Summary: Background: The aim of this study was to assess the safety of several modified Nuss procedures for severe pectus excavatum (PE). Methods: Thirty-four patients with severe PE underwent the Nuss procedure: 10 underwent slanting-directed bar ...
Sheng-Pin Yu, Peng-Sheng Lai, Chien-Te Pan, Pei-Ming Huang   +3 more
doaj   +1 more source

Impact of MgO Additions on the Oxidation Resistance and Compression Behavior of Vanadium Alloys

Advanced Engineering Materials, EarlyView.
An increase in oxidation resistance at 600 °C is achieved for alloys containing more than 2.5 wt.% MgO. It has been established that, along with V2O5, MgO6V2, and Mg2O7V2 are formed, which are presumed to enhance oxidative stability. Furthermore, the possible transformation of Mg‐vanadates through reaction with CO2, which presumably occurs in this ...
Ievgen Solodkyi, Mathias Galetz, Georg Hasemann, Fabian Lanoy, Emma White, Manja Krüger   +5 more
wiley   +1 more source

Clinical and paraclinical characteristics of patients with pectus excavatum admitted for surgical treatment at a tertiary hospital in Vietnam

Journal of Pediatric Surgery Open
Background: Pectus excavatum is the most common congenital chest wall deformity. This study aimed to describe the clinical and paraclinical characteristics of patients with pectus excavatum undergoing surgical treatment at a tertiary hospital in Vietnam.
Dao Duy Phuong, Tran Minh Bao Luan, Ho Tat Bang, Tran Thanh Vy, Nguyen Hoai Nam   +4 more
doaj   +1 more source

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

Advanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt, Yong Chen, Georg Hasemann, Benjamin Wahlmann, Carolin Körner, Manja Krüger   +5 more
wiley   +1 more source

Evaluation of thoracic vertebrae rotation in patients with pectus excavatum

Acta Orthopaedica et Traumatologica Turcica, 2017
Purpose: The aim of our study was to evaluate thoracic vertebrae rotation in patients with pectus excavatum. Moreover, we wanted to assess the prevalence, the severity and relationship between pectus excavatum and adolescent idiopathic scoliosis (AIS ...
Ryszard Tomaszewski, Łukasz Wiktor, Ludwina Machała   +2 more
doaj   +1 more source