JournalTOCs

Biophysical Reviews and Letters
Number of Followers: 5

Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1793-0480 - ISSN (Online) 1793-7035
Published by World Scientific

[120 journals]

Author Index Volume 16 (2021)
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  Pages: 155 - 156
  Abstract: Biophysical Reviews and Letters, Volume 16, Issue 04, Page 155-156, December 2021.
  
  Citation: Biophysical Reviews and Letters
  PubDate: 2022-01-12T08:00:00Z
  DOI: 10.1142/S1793048021990010
  Issue No: Vol. 16, No. 04 (2022)
Identification of Independent Patterns of COVID-19 Mortality in Brazil by
a Functional QR Decomposition
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  Authors: Jorge C. Lucero
  Pages: 1 - 9
  Abstract: Biophysical Reviews and Letters, Ahead of Print.
  The subset selection problem of linear algebra is applied to identify independent patterns of COVID-19 evolution within Brazil. The data consist of a set of mortality curves in states of Brazil. A subset of the most independent curves is selected by using a functional version of the QR matrix decomposition technique with column pivoting. The selected subset is used next as a basis to represent the remaining curves filtering out any data redundancy. For each independent curve, an associated epidemiological region of influence is defined. The results show two main independent curves with a similar two-peak pattern and a 50-day shift between the patterns. Two main epidemiological regions are next identified: one encompassing most of the country from the center and northeast states to the south, an another one containing the Amazonian region at the northwest.
  Citation: Biophysical Reviews and Letters
  PubDate: 2022-04-20T07:00:00Z
  DOI: 10.1142/S1793048022500035
Dynamical System Analysis of a Mathematical Model of Mild Atherosclerosis
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  Authors: Debasmita Mukherjee
  Pages: 1 - 18
  Abstract: Biophysical Reviews and Letters, Ahead of Print.
  Atherosclerosis, a long-term inflammatory affliction, occurs due to plaque accumulation in the intima, the innermost layer of artery. It is one of the prime causes of deaths from several cardio-vascular diseases. The primary interaction between oxidized low density lipoprotein (LDL) and macrophages in forming fatty steak is presented here in terms of a nonlinear reaction-diffusion system in one spatial dimension under Neumann boundary conditions. Both the spatio-temporal and the temporal models are analyzed qualitatively. Numerical simulations of both the model systems lead to three significant model parameters with respect to which bifurcations are found. Bifurcating parameters indicate possible developments of various therapeutic strategies in order to establish any preventative measures for an individual or group of patients. It has been found that ingestion rate of oxidized LDL by macrophages has a great impact on the plaque forming process.
  Citation: Biophysical Reviews and Letters
  PubDate: 2022-04-07T07:00:00Z
  DOI: 10.1142/S1793048022500011
Investigation on Ultrasound Long Bone Fracture Imaging using the Migration
Method
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  Authors: Ruth Kanyana, Ademola Olatide Olaniyan, Afam Uzorka
  Pages: 1 - 14
  Abstract: Biophysical Reviews and Letters, Ahead of Print.
  Ultrasound imaging plays a critical role in diagnostics in biomedicine because of its safety, nature, and low cost. Conventional ultrasound systems form images using a focused beam during transmission and dynamic focusing during the reception. The area under examination can be simultaneously insonified using a plane wave, which allows for ultrafast data capture rates but lowers image quality. The resultant image can be improved by coherent plane-wave compounding, in which numerous plane waves are released at different angles to produce distinct image datasets that are then blended to improve the final composite image. This study used the Fourier-domain technique for coherent plane-wave compounding image reconstruction from the image produced by conventional ultrasound to investigate the quality of the image produced compared to the X-ray image. To establish the merits and limitations of this approach, the researchers provided quantitative comparisons with the images obtained by the X-ray machine. The evaluation results are based on the peak signal-to-noise ratio (PSNR), mean, and variance. The results obtained showed that the migration method can precisely image the cortical bone fracture and offer good contrast between the bone tissue and the subcutaneous tissues.
  Citation: Biophysical Reviews and Letters
  PubDate: 2022-04-07T07:00:00Z
  DOI: 10.1142/S1793048022500023
Second Quantization Approach to COVID-19 Epidemic
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  Authors: Leonardo Mondaini, Bernhard Meirose, Felipe Mondaini
  Pages: 1 - 12
  Abstract: Biophysical Reviews and Letters, Ahead of Print.
  In this article, a stochastic SIR-type model for COVID-19 epidemic is built using the standard field theoretical language based on creation and annihilation operators. From the model, we derive the time evolution of the mean number of infectious (active cases) and deceased individuals. In order to capture the effects of lockdown and social distancing, we use a time-dependent infection rate. The results are in good agreement with the data for three different waves of epidemic activity in South Korea.
  Citation: Biophysical Reviews and Letters
  PubDate: 2021-12-23T08:00:00Z
  DOI: 10.1142/S1793048021500090
On Electrical Spiking of Ganoderma Resinaceum
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  Authors: Andrew Adamatzky, Antoni Gandia
  Pages: 1 - 9
  Abstract: Biophysical Reviews and Letters, Ahead of Print.
  Fungi exhibit action-potential like spiking activity. Up to date, most electrical activity of oyster fungi has been characterized in sufficient detail. It remains unclear if there are any patterns of electrical activity specific only for a certain set of species or if all fungi share the same “language” of electrical signalling. We use pairs of differential electrodes to record extracellular electrical activity of the antler-like sporocarps of the polypore fungus Ganoderma resinaceum. The patterns of the electrical activity are analyzed in terms of frequency of spiking and parameters of the spikes. The indicators of the propagation of electrical activity are also highlighted.
  Citation: Biophysical Reviews and Letters
  PubDate: 2021-10-07T07:00:00Z
  DOI: 10.1142/S1793048021500089
Conductivity Mechanism of Ion–DNA Interaction in Dilute Solution
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  Authors: Lingyun Zhang
  Pages: 1 - 8
  Abstract: Biophysical Reviews and Letters, Ahead of Print.
  In this paper, we propose an impurity scattering model of quasi-one-dimensional disordered system for ion–DNA interaction in dilute solution based on the density of state in non-periodic DNA. This disordered system is composed of cations and DNA, the hydrogen ions adsorbed on the surface of DNA with negative charges are considered as impurities. It is hydrogen ions in hydration layer that cause the variations of the density of state near the Fermi level. The classical theory describes the linear dependence of conductivity on concentration. By developing the Green function approach of ion–DNA interaction in the dilute solution, the quantum theory not only gives the linear part but also demonstrates the nonlinear part of the conductivity.
  Citation: Biophysical Reviews and Letters
  PubDate: 2021-09-11T07:00:00Z
  DOI: 10.1142/S1793048021500077