The thermal conductivity of particulate nanocomposites is strongly dependent on the size, shape, orientation and dispersion uniformity of the inclusions. To correctly estimate the effective thermal conductivity of the nanocomposite, all these factors should be included in the prediction model. In this paper, the formulation of a generalized effective medium theory for the determination of the effective thermal conductivity of particulate nanocomposites with multiple inclusions is presented. The formulated methodology takes into account all the factors mentioned above and can be used to model nanocomposites with multiple inclusions that are randomly oriented or aligned in a particular direction. The effect of inclusion dispersion non-uniformity is modeled using a two-scale approach. The applications of the formulated effective medium theory are demonstrated using previously published experimental and numerical results for several particulate nanocomposites.
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http://dx.doi.org/10.3390/ma9080694 | DOI Listing |
J Avian Med Surg
January 2025
Pathology and Wildlife Laboratory, Federal University of Acre, Rio Branco, Acre, 69920-900, Brazil.
Psittaciformes kept as pets can serve as reservoirs of various microorganisms, many of which have zoonotic potential, including spp. In this study, the antifungal susceptibility profiles of 16 spp. isolated from the oral and cloacal cavities of 20 pet parrots were evaluated.
View Article and Find Full Text PDFVaccines (Basel)
December 2024
Laboratory of Molecular Studies and Experimental Therapy-LEMTE, Department of Genetics, Federal University of Pernambuco, Recife 50670-901, Brazil.
Background/objectives: DNA vaccines are rapidly produced and adaptable to different pathogens, but they face considerable challenges regarding stability and delivery to the cellular target. Thus, effective delivery methods are essential for the success of these vaccines. Here, we evaluated the efficacy of capsules derived from the cell wall of the yeast as a delivery system for DNA vaccines.
View Article and Find Full Text PDFSensors (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 PDFSensors (Basel)
December 2024
College of Physics, Jilin University, Changchun 130000, China.
The sensorless vector control method of synchronous reluctance motors (SynRMs), based on extended back electromotive force (EMF) or flux observation, has been widely applied in the medium- or high-speed range. However, in the low-speed and low-current range, the extended back-EMF and flux are nearly zero. The use of the current frequency () control method can enable the motor to pass through the low-speed region, thereby ensuring that the back-EMF and flux reach a large value.
View Article and Find Full Text PDFPharmaceutics
December 2024
M.M. Shemyakin & Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia.
: Antimicrobial peptides are generally considered promising drug candidates for combating resistant bacterial infections. However, the selectivity of their action may vary significantly. Natural gomesin, isolated from haemocytes of the tarantula , demonstrates a broad spectrum of antimicrobial activities, being the most effective against pathogenic fungi.
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