This study investigated the diversity of zooplanktonic microcrustaceans in Lake Tison, a crater lake located in the High Guinean Savannah of Cameroon. Sampling was conducted on a fortnightly basis from November 2018 to January 2020. Physicochemical parameters were measured vertically at the center of the lake, from -0.5 m to -20 m. Organisms were collected from both the shoreline and the water column. During the dry season, the euphotic layer measured 7.07 ± 0.45 m, with cooler (23.46℃ ...

Biochemistry  Biophysics 

Due to the multiple diseases in the same patients, and the multiple medications they were taking, it was necessary to formulate medications containing two or more pharmaceutical substances to reduce the patient’s dosage and, as a result, reduce side effects. In this study aspirin and clopidogrel were formulated together in a pharmaceutical dosage form that ensures the chemical and physical stability. By wet granulation method as a first layer for clopidogrel as eduragit L100 as a polymer, which ...

High Polymer Chemistry  Medicinal Chemistry  Biochemistry  Physical Chemistry  Analytical Chemistry  Biophysics 

The Goldman Hodgkin and Katz equation (GHK) is regarded as a cornerstone in the field of biology. The GHK equation expands upon Bernstein’s hypothesis. Bernstein had originally employed the Nernst equation to validate his theory. Consequently, the GHK equation is also logically derived from the Nernst equation. Contemporary understanding in chemistry and electrochemistry conclusively indicates that the GHK equation contains fundamental flaws, as it deviates from the primary intent of the Nernst ...

Cell Biology  Biochemistry  Biophysics 

This study presents a numerical simulation methodology for investigating blood flow in veins and arteries using a computational approach. The simulation is based on the Navier-Stokes equations, discretization techniques, and finite difference methods. The aim of this research is to provide insights into the behavior of blood flow under simplified conditions, enabling a better understanding of the underlying fluid dynamics. The methodology incorporates steady-state flow assumptions and a 2D geome...

Biophysics 

This study compared Inertial Measurement Unit (IMU) and Optical Motion Capture (OMC) systems in measuring peak ankle angles and Range of Motion (ROM) during Countermovement Jumps (CMJ) and Lateral Skater Jumps (LSJ). Data during these agility movements were analyzed and the ankle angles in pitch, roll, and yaw for the IMU were determined using algorithms which integrated gyroscope data, aligned it with foot flat reference, and fused it with accelerometer-derived inclination angles using a comple...

Electric Engineering  Technology  Bioengineering  Mechanical Engineering  Complex network models  Biophysics  Occupational Health  Biological Engineering  Computational Biology  Orthopedics  Rehabilitation Medicine  Kinesiology  Mechanics 

Biological systems are necessarily dissipative structures in the long run, and dissipative structures are far from equilibrium and homeostasis: order (periodicity) and disorder (non-linear variability) are “coexisting dynamic states”. The common epistemological habit of modern molecular biology is to reduce an observed phenotype or function to a molecular entity, such as a gene, protein or pathway, which have become the embodiment of causation in biology. In the emerging framework of ge...

Bioengineering  Biophysics 

The effect of centimeter waves of non-thermal level on four types of bacteria has been studied. On E. coli strains, a sharp increase in survival during the first cycle of cell division was obtained. The mechanism of inhibition of pathogenic bacteria by a weak electromagnetic field is explained. The mechanism of stimulating the survival of bacteria associated with the activation of genes that reduces the number of dying bacteria is explained. The general form of the modified Ferhulst equat...

Pharmacology  Cell Biology  Pathology  Biophysics 

The analysis of the results of irradiation of DNA isolated from lymphocytes by an ultrahigh frequency electromagnetic field was carried out. The natural frequency of torsional vibrations of the spirals of collagen molecules was found. It is proved theoretically that single-strand breaks in the DNA of lymphocytes by microwaves are caused by torsional vibrations of the helices of DNA molecules whose natural frequencies coincide with the frequencies of microwaves, and the resonant frequencies have ...

Biophysics 

The human immune system relies on the dynamic, complex integration of various cells, proteins, tissues, and organs which work together in concert with the nervous system to recognize, adapt to, and neutralize pathogens. In parallel, there is a neurobiological network of systems which function to react and adapt to changes in the environment to restore and maintain homeostasis in the service of survival. Our dependency on the stability and resilience of this collective ecosystem of responses is a...

Immunology  Biophysics 

The objective of the study is to detect the resonant absorption of an ultrahigh-frequency electromagnetic field in the centimeter range by DNA molecules at a frequency corresponding to the natural frequency of torsional vibrations of the DNA helix. Instead of DNA solution, cultures of various bacteria containing DNA were used, for whose DNA spirals the resonant frequencies of torsional vibrations were calculated. The cultures were placed in test tubes or cuvette and irradiated by microwave gener...

Microbiology  Biophysics