ICONTECH INTERNATIONAL JOURNAL https://icontechjournal.com/index.php/iij <p>ICONTECH INTERNATIONAL JOURNAL is open access, peer-reviewed, international indexed and refereed journal published by IEDSR ASSOCIATION. Its main objective is to provide an intellectual platform for the international scholars. It aims to promote scientific studies in science and technology and become the leading journal in the relevant field. </p> en-US submission@icontechjournal.com (Alina AMANZHOLOVA) rahmat@cenraps.org (Rahmat Ullah) Sat, 02 Jul 2022 15:01:23 +0000 OJS http://blogs.law.harvard.edu/tech/rss 60 Effect of invasive blue crab chitosan coating on extending the shelf life and quality of fresh strawberry fruits https://icontechjournal.com/index.php/iij/article/view/217 <p>The diversity of marine biomasses is a set of exploitable and renewable resources with application in several sectors. The blue crab was considered as a threat by the Tunisian fishermen in 2014, since it induces several damages on nets but also on captures. In addition, in 2017, the Tunisian State launched a plan to exploit and promote this species of crab. In the context of valuation, the chitin was isolated by a conventional chemical method from the shell of blue crabs. The efficiency of chitin extraction from <em>Callinectes sapidus (C. sapidus)</em> was achieved with a yield of 27.6&nbsp;%.Then; the chitosan was prepared by N-deacetylation of chitin with a yield of 16 %, leading to a degree of acetylation (DA) of 89.9%. For <em>Portunus segnis (P. segnis)</em> the yield of chitin was 31.2% while the chitosan yield was 20% and the degree of acetylation was 79.9% After these analyzes, it can be deduced that chitosan has a high degree of purity and that it is considered effective for the preservation of strawberries in favor of its antioxidant and antimicrobial capacity.</p> dhaker troudi Copyright (c) 2022 ICONTECH INTERNATIONAL JOURNAL https://creativecommons.org/licenses/by-nc-nd/4.0 https://icontechjournal.com/index.php/iij/article/view/217 Sat, 02 Jul 2022 00:00:00 +0000 Effect of Sex Hormones on Oviduct Cells https://icontechjournal.com/index.php/iij/article/view/218 <p>The Oviduct (also called the Oviduct and Fallopian tubes) is one of the female's internal reproductive organs. Retention of the egg after ovulation, pre-implantation embryo development and fertilization is the reproductive organ. Steroid hormones (estrogen and progesterone) are known to affect the morphology and function of cells in the oviduct. In addition to the anatomical, histological and physiological structure of the oviduct, this review will focus on the effects of estrogen and progesterone on ciliary and muscle cell functions and morphologies during fertilization, pre-implantation embryo development and embryo transplantation in laboratory and farm animals. We will also review the causes of changes in the function of secretory, ciliary and muscle cells of the oviduct that can cause embryo transport defects. Finally, we will consider the factors that can cause ectopic pregnancy.</p> emre demirci Copyright (c) 2022 ICONTECH INTERNATIONAL JOURNAL https://creativecommons.org/licenses/by-nc-nd/4.0 https://icontechjournal.com/index.php/iij/article/view/218 Sat, 02 Jul 2022 00:00:00 +0000 Investigation of Mechanical Behavior of Scaffolding Structures Produced Using CoCr Alloy by Selective Laser Melting Method https://icontechjournal.com/index.php/iij/article/view/225 <p><strong>ABSTRACT</strong></p> <p>The type of material used in implant production changes depending on the places of use in the body. CoCr alloy is frequently used in hip implants due to its advantages such as high strength, wear and corrosion resistance. Thanks to the developing additive manufacturing technology, porous hip implants with different densities can be produced. Since the porous hip implants produced have a lower modulus of elasticity, the stresses between the bone and the implant can be reduced, and thus problems such as loosening, fracture and deformation on the implant can be eliminated. The designed scaffolds must support the internal architecture of the newly created cells. For this reason, the scaffolding structures used in the body must maintain the mechanical strength of the bone. The mechanical properties of a bone scaffold, such as elastic modulus, compressive and tensile strength, maximum tensile and flexural modulus, should be such that they can successfully replace bones and hard connective tissues, and should not collapse during use or regular activities of the patient. Therefore, in this study, using different unit cell models, cell density and shape geometry were determined and subjected to compression test. As a result of the tests, it was investigated how the deformation was distributed along the scaffolds, and the results of the changing cell models were compared. As a result of the mechanical tests, different porosity ratios and unit cells were used in the scaffold structures, and the models showed different mechanical properties. Maximum stress in the scaffold models was measured as 247.58 MPa in the Body Diagonalw With Nodes model, while it was 240.7 MPa in the Dode Thick model and 227.19 MPa in the Dode Thin model.</p> <p><strong>Keywords:</strong> Porous structure, Mechanical Test, Ansys Analysis</p> Özgün Ceren Akbay, Erkan Bahce, Cebrail Ölmez Copyright (c) 2022 ICONTECH INTERNATIONAL JOURNAL https://creativecommons.org/licenses/by-nc-nd/4.0 https://icontechjournal.com/index.php/iij/article/view/225 Sat, 02 Jul 2022 00:00:00 +0000