Biosis:Biological Systems <p><em>Biosis: Biological Systems</em> is an international fully peer-reviewed and Committee on Publication Ethics (COPE) compliant open access Journal that is published online with a quarterly frequency. The goal of this journal is to promote interdisciplinary approaches in Biology and Medicine, at the interface between organismal and the processes of organic evolution in the broadest sense.</p> Eurasia Academic Publishing Group en-US Biosis:Biological Systems 2708-0072 In vitro effectiveness of antimicrobial properties of propolis and chlorhexidine on oral pathogens: A comparative study <p>Periodontal disease is one of the most prevalent infectious oral conditions in the present century, and it is necessary to conduct research to find a solution to overcome these diseases. A variety of microbial strains of bacteria and fungi are involved in the pathogenesis of periodontal disease. The use of chemical agents such as mouthwashes is one of the strategies to control these diseases. The purpose of the present study was to compare the antimicrobial effects of propolis and chlorhexidine gluconate (CHX) on the bacterial strains of <em>Streptococcus mutans</em>, <em>Streptococcus pyogenes</em>, <em>Staphylococcus aureus</em>, <em>Enterococcus faecalis</em>, <em>Pseudomonas aeruginosa</em>, and the yeast strain of <em>Candida albicans</em> using the broth microdilution method. The results showed the inhibitory and microbicidal activities of the two substances against the tested microbial strains. The antibacterial and antifungal effects of CHX were more effective reported in this study than that of propolis against the studied pathogens. The results of this study also indicated that the propolis was less effective in inhibiting bacterial growth than the CHX. In addition, the combination of these two solutions had a synergistic effect on inhibition of other studied strains, with the exception of <em>C. albicans</em> and <em>S. aureus</em>. There is a need for further research on strains isolated from oral biofilm to achieve complementary results.</p> Hadis Tavafi Maryam- sadat Sadrzadeh-Afshar Soroush Niroomand Copyright (c) 2020 Biosis:Biological Systems 2020-10-15 2020-10-15 1 3 116 125 10.37819/biosis.001.03.0062 Testing Utility <p>Tyrannosaurus rex is infamous for its large body size and seemingly mismatched forelimbs, which are extremely small relative to body size. Since its first description by Osborn in 1905, the diminutive size of this attribute has fueled an arms race of sorts wherein specialists have advanced numerous theories seeking to prove a seemingly single-track use or non-use for the arms. While the overall debate on the evolutionary processes behind the small limb size are not addressed here, previous functional theories are reviewed within a functionalist perspective. This paper contends that Tyrannosaurus rex would have used its limbs for whatever purposes possible and that selecting one function to the exclusion of others is not a realistic approach to understanding the lifeways of the Tyrant King. Rather, a functionality assessment is suggested and tested using existing theories with the aim of providing a tool to assess future use case theories.</p> Don Arp Copyright (c) 2020 Biosis:Biological Systems 2020-10-15 2020-10-15 1 3 102 108 10.37819/biosis.001.03.0060 A New Fossil Genus of False Blister Beetles (Coleoptera: Oedemeridae) from mid-Cretaceous Burmese Amber <p>In this article, a new genus with four new species of the family Oedemeridae from mid- Cretaceous Burmese amber are described and illustrated. <em>Ditysparedrus </em>n. gen. differs from other genera of the subfamily in the short ventrite I and pyriform elytra. Key to new species of this genus is given.</p> Andrei Legalov Francesco Vitali Copyright (c) 2020 Biosis:Biological Systems 2020-10-15 2020-10-15 1 3 109 115 10.37819/biosis.001.03.0063 What are Preprints and Preprint Servers? Why consider using one? Dyke Gareth Copyright (c) 2020 Biosis:Biological Systems 2020-10-15 2020-10-15 1 3 94 95 10.37819/biosis.001.03.0069 Tyrannosaurus rex it is not a prehistoric animal: roaring in a semantic prehistoric jungle <p>The word “prehistory” has been used for a long time to indicate all extinct organisms of the past, with dinosaurs occupying a center stage stimulating the imagination of a very large audience. Such erroneous use of the term prehistory is widespread even today, a word and concept originally referred to the period of human history which preceded writing, i.e. prior to documented history and embracing a time interval from about 2.6 million years ago to 4000 BC. Keeping in mind the crucial milestone of 'deep time' concept in geology the division of the extensive Earth history into only two sections of respectively 4.5429 billion years and 4000 years in our opinion is a misleading oversimplification. Over the past few centuries much effort has gone into the development of a hyper-detailed chronostratigraphic scale, substantiated by absolute dating, detailed biostratigraphy, and documentation of biological evolution. All this generation of knowledge, conducted by thousands of researchers over many years, is completely lost when, in a simplistic way the anthropocentric dichotomy is accepted.</p> Marco Romano Raffaele Sardella Copyright (c) 2020 Biosis:Biological Systems 2020-10-15 2020-10-15 1 3 96 101 10.37819/biosis.001.03.0061