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This paper proposes a wideband and polarization-insensitive metamaterial absorber (MA) based on tractable conductive plastic, which is compatible with an additive manufacturing technology. We provide the design, fabrication, and measurement result of the proposed absorber and investigate its absorption principle. The performance characteristics of the structure are demonstrated numerically and experimentally. The simulation results indicate that the absorption of this absorber is greater than 90% in the frequency range of 16.3-54.3 GHz, corresponding to the relative absorption bandwidth of 108%, where a high absorption rate is achieved. Most importantly, this additive manufactured structure provides a new way for the design and fabrication of wideband MAs.
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http://dx.doi.org/10.1021/acsomega.8b01223 | DOI Listing |
J Trace Elem Med Biol
September 2025
Department of Neurobiology, Maj Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, Kraków 31-343, Poland. Electronic address:
Vanadium (V) is a trace element in the environment; it is detected in soil, water, air, dust, and food products. V-containing compounds have shown therapeutic potential in the treatment of diabetes. However, studies on the effects of V on animal behavior remain limited and sporadic.
View Article and Find Full Text PDFJ Craniofac Surg
September 2025
Department of Auricular Reconstruction, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
Background: Congenital accessory auricle is a common aurcile malformation, often associated with tragus malformation, impacting the appearance and psychology of patients. To optimize surgical treatments for congenital accessory auricle with tragus malformation, this article proposes a novel classification and explores surgical strategies.
Methods: This retrospective study included 120 patients with congenital accessory auricle and tragus malformation who underwent surgery between December 2019 and June 2024.
J Craniofac Surg
September 2025
Department of Pediatric Plastic and Reconstructive Surgery, Children's Hospital Colorado.
Background: Craniosynostosis repair is traditionally performed at high-volume academic centers with multidisciplinary teams. Access barriers in rural or suburban regions raise the question of whether comparable outcomes can be achieved and if this surgery can be performed safely in community settings.
Objective: To evaluate the safety and perioperative outcomes of cranial vault reconstruction for craniosynostosis performed at a community-based children's hospital and compare these outcomes to those reported at academic institutions.
Braz Oral Res
September 2025
Pontifícia Universidade Católica de Minas Gerais - PUC-Minas, Institute of Biological and Health Sciences, Dentistry Department, Belo Horizonte, MG, Brasil.
The contamination of dental curing light tips was evaluated before and after treatment and after their use and disinfection. The influence of a plastic protective barrier over the flexural strength and the modulus of elasticity of resin composites were also analyzed. Microbiological sampling was conducted at initial contamination (T0), in Log 10 CFU/4 mL; after dental treatment (T1); and after disinfection with 70% ethanol (v/v) (T2).
View Article and Find Full Text PDFAn Acad Bras Cienc
September 2025
Federal University of Minas Gerais, Department of Sanitary and Environmental Engineering, 6627, Antônio Carlos Avenue, Campus Pampulha, 31270-010 Belo Horizonte, MG, Brazil.
Micro- and nanoplastics (MNPs) are emerging contaminants increasingly recognized for their environmental and health implications. While surface water systems have been extensively studied, the presence, behavior, and impacts of MNPs in groundwater remain underexplored, despite its critical role as water source worldwide. The findings in this review highlight that agricultural activities, particularly plastic mulches, pesticides containers, fertilizer bags, greenhouses, are major sources of MNP.
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