The orbital volume after enucleation or evisceration might shrink over time due to atrophy of the orbital fat and connective tissue. This can lead to prosthesis misfit and an unsatisfactory cosmetic result. This so-called post enucleation socket syndrome (PESS) needs a secondary orbital volume augmentation. The techniques for orbital volume augmentation are secondary orbital implants or implant exchange, orbital floor implants or injectable augmentation. The surgical possibilities are described and discussed with special attention to indications and chances.
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http://dx.doi.org/10.1055/s-0034-1396140 | DOI Listing |
Angew Chem Int Ed Engl
December 2024
Hangzhou International Innovation Institute, Beihang University, Hangzhou, 311115, P. R. China.
In sodium-ion batteries, the layered transition metal oxides used as cathode often experience interlayer sliding of interlayer spacing and lattice variations during charge/discharge, leading to structural damage and capacity degradation. To address this challenge, a La doping strategy guided by Bayesian optimization has been employed to prepare the high-performance O3-NaNiMnCuLaO (NMCL) cathode material. Density functional theory calculations reveal that the O 2p orbital overlaps with the t orbital of transition metals in NMCL, facilitating the formation of Na-O-La bonds and promoting the oxygen redox reaction kinetics.
View Article and Find Full Text PDFAesthetic Plast Surg
January 2025
Division of Plastic and Maxillofacial Surgery, Department of Surgery, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
Background: Periorbital aging is a complex phenomenon that involves multiple layers of facial anatomy, including bone, fat, and globe. While previous studies have predominantly focused on age-related changes in facial fat compartments, this research aims to provide a comprehensive understanding of all periorbital components, including upper and lower orbital fat, orbital cavity volume, globe volume, and globe position, in the context of aging.
Methods: We conducted a retrospective study involving 118 patients (236 subjects) aged 18-99 years who underwent brain MRI using a 3 Tesla MR system.
Sensors (Basel)
December 2024
School of Information and Communication, Guilin University of Electronic Technology, 1 Xiamen Road, Guilin 541004, China.
This paper proposes a green computing strategy for low Earth orbit (LEO) satellite networks (LSNs), addressing energy efficiency and delay optimization in dynamic and energy-constrained environments. By integrating a Markov Decision Process (MDP) with a Double Deep Q-Network (Double DQN) and introducing the Energy-Delay Ratio (EDR) metric, this study effectively quantifies and balances energy savings with delay costs. Simulations demonstrate significant energy savings, with reductions of up to 47.
View Article and Find Full Text PDFMicromachines (Basel)
December 2024
Department of Applied Mechanics, Faculty of Civil Engineering, Vilnius Gediminas Technical University, LT-10223 Vilnius, Lithuania.
This paper presents the design, development, and investigation of a novel piezoelectric inertial motor whose target application is the low Earth orbit (LEO) temperature conditions. The motor utilizes the inertial stick-slip principle, driven by the first bending mode of three piezoelectric bimorph plates, and is compact and lightweight, with a total volume of 443 cm and a mass of 28.14 g.
View Article and Find Full Text PDFOphthalmic Plast Reconstr Surg
January 2025
Department of Oculofacial Plastic and Orbital Surgery, Duke Eye Center, Durham, North Carolina.
Purpose: This study aimed to analyze demographic, clinical, socioeconomic, and facility-specific factors affecting the survival outcomes of patients diagnosed with eyelid melanoma (EM) between 2004 and 2017 using data from the National Cancer Database.
Methods: Cases of EM diagnosed between 2004 and 2017 were identified using the National Cancer Database. Patient demographic data, tumor stage (American Joint Committee on Cancer TNM classification), treatment modalities, and socioeconomic variables were collected.
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