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Topic Review
Journal Acoustics
Acoustics (ISSN 2624-599X) is a peer-reviewed, open access journal of acoustics science and engineering published quarterly online by MDPI. It is indexed by the Emerging Sources Citation Index (ESCI) in Web of Science. Manuscripts are peer-reviewed and a first decision provided to authors approximately 11.7 days after submission; acceptance to publication is undertaken in 2.9 days (median values for papers published in this journal in the second half of 2020).
  • 824
  • 26 Sep 2021
Topic Review
Characterization of the Mechanical Properties of 3D-Printed Food
Additive manufacturing (AM), commonly known as 3D printing, is a fabrication technology that has raised interest in many areas. It is a manufacturing process that builds up complex solid (or semi-solid) forms by means of a layer-by-layer process. 
  • 823
  • 13 Jun 2022
Topic Review
Lattice Boltzmann Method: Nuclear Reactor
Nuclear engineering requires computationally efficient methods to simulate different components and systems of plants. The Lattice Boltzmann Method (LBM), a numerical method with a mesoscopic approach to Computational Fluid Dynamic (CFD) derived from the Boltzmann equation and the Maxwell–Boltzmann distribution, can be an adequate option.
  • 823
  • 10 Aug 2021
Biography
Elmer William Engstrom
Elmer William Engstrom (August 25, 1901 – October 30, 1984) was an American electrical engineer and corporate executive prominent for his role in the development of television. Engstrom was born in Minneapolis, Minnesota in 1901 as son of Emil Engstrom, a power plant engineer, and Anna (Nelson) Engstrom. After attending the Mechanical Arte High School in Saint Paul, Minnesota, he obtained
  • 823
  • 15 Nov 2022
Topic Review
Photolyase Current Applications
The photolyase family consists of flavoproteins with enzyme activity able to repair ultraviolet light radiation damage by photoreactivation. DNA damage by the formation of a cyclobutane pyrimidine dimer (CPD) and a pyrimidine-pyrimidone (6-4) photoproduct can lead to multiple affections such as cellular apoptosis and mutagenesis that can evolve into skin cancer. The development of integrated applications to prevent the negative effects of prolonged sunlight exposure, usually during outdoor activities, is imperative. 
  • 823
  • 26 Sep 2022
Topic Review
Marine Safety in Relation to Human Errors
As in any industry exposed to risk, human and organizational factors are the main stakes of maritime safety. Understanding the causes and risks of maritime accidents is integral to the sustainability of shipping. The investigation of marine accidents is a crucial tool for their identification in areas related to operations and ships.
  • 823
  • 16 Jun 2023
Topic Review
Hybrid Reinforced Polymer Matrix Composites
The use of composite materials has seen many new innovations for a large variety of applications. The area of reinforcement in composites is also rapidly evolving with many new discoveries, including the use of hybrid fibers, sustainable materials, and nanocellulose.
  • 822
  • 22 Feb 2023
Topic Review
Wet Nanotechnology
Wet nanotechnology (also known as wet nanotech) involves working up to large masses from small ones. Wet nanotechnology requires water in which the process occurs. The process also involves chemists and biologists trying to reach larger scales by putting together individual molecules. While Eric Drexler put forth the idea of nano-assemblers working dry, wet nanotech appears to be the likely first area in which something like a nano-assembler may achieve economic results. Pharmaceuticals and bioscience are central features of most nanotech start-ups. Richard A.L. Jones calls nanotechnology that steals bits of natural nanotechnology and puts them in a synthetic structure biokleptic nanotechnology. He calls building with synthetic materials according to nature's design principles biomimetic nanotechnology. Using these guiding principles could lead to trillions of nanotech robots, that resemble bacteria in structural properties, entering a person's blood stream to do medical treatments.
  • 821
  • 29 Sep 2022
Topic Review
Mini/Micro/Nano Scale Liquid Metal Motors
Swimming motors navigating in complex fluidic environments have received tremendous attention over the last decade. In particular, liquid metal (LM) as a new emerging material has shown considerable potential in furthering the development of swimming motors, due to their unique features such as fluidity, softness, reconfigurability, stimuli responsiveness, and good biocompatibility. LM motors can not only achieve directional motion but also deformation due to their liquid nature, thus providing new and unique capabilities to the field of swimming motors. 
  • 821
  • 28 Apr 2021
Topic Review
RDF Fire Hazards Mitigation
Experience has shown that power station conversions to a new fuel using the same materials handling methods and equipment, designed for the previous or original intended fuel, without a proper fire engineering re-evaluation of plant suitability (for the properties and behaviors of the new fuel) is not a safe option. Many times, the detection and suppression equipment is presumed adequate, whereas a complete technical evaluation is required. Given that RDF fires are extremely difficult to extinguish it should be remembered that fires could last for days or even weeks. Additionally, given the correct circumstances, the effluent from RDF smoldering fires within a pile can lead to explosion(s), possibly causing severe injuries and even the loss of life. In addition, there are also business considerations due to the subsequent severe interruptions, not forgetting the importance of the security of electricity supply. The difficulties of RDF fire hazards mitigation begin with the notoriously problematic factor of discovery of a fire within the storage pile; they then, more often than not, continue throughout the entire fire-fighting operations process.
  • 821
  • 23 Nov 2021
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