https://ijrdo.org/index.php/as/issue/feed IJRDO - Journal of Applied Science (ISSN: 2455-6653) 2019-05-09T08:38:17+00:00 Naeem Akhtar editor@ijrdo.org Open Journal Systems <p>IJRDO Journal of Applied Science is an international, peer-reviewed, open access journal that welcomes high-quality research articles in all aspects of Applied Sciecne research. Subject areas include, but are not limited to the following fields: Biology, Physics, Chemistry, Pharmacy, Zoology, Health sciences, Agriculture and Forestry, Environmental sciences, Mathematics, Statistics, Animal Science, Bio Technology, Medical Sciences, Geology, Social Sciences, Natural sciences, Political Science, Urban Development, Information Technology, e-Learning, e-Commerce, Architecture, Earth Science, Archaeological Science, A deal with engineering fundamentals<br><span style="font-size: 1.5em;"><strong> <span style="color: #fcbd0f; text-shadow: #666666 0px 0px 3px;">Current Impact Factor: 2.236</span></strong></span><br><br></p> https://ijrdo.org/index.php/as/article/view/2676 PARAFFINS AND POLYAROMATIC HYDROCARBONS FROM WASTE PET UNDER SLOW HEATING RATE PYROLYSIS 2019-04-18T10:24:19+00:00 Ogunyemi O.I aadebiaye@gmail.com Oyedeko K.F.K kfkoyedeko@yahoo.com Eruola O.A no-reply@gmail.com Ricketts M. S. no-reply@gmail.com <p><em>Poly Ethylene Terephthalate (PET) a polyester is one of the thermoset plasticsor synthetic fibres produced by step growth polymerization. It is in high demand world overbecause of its intrinsic properties especially for liquid substances.</em></p> <p><em>In Nigeria, particularly Lagos State tonnages of PET are disposed of indiscriminately as wastes unchecked thereby contributes to flooding and ecosystem to breed mosquitoes. Due to its non-biodegradablenature recyclingvia thermolytic is commonly used for its conversion to either liquid fuels or chemical feedstock.</em></p> <p><em>In this study local materials were used to convert waste PET via pyrolysis to obtain liquid volatile organic compounds (VOC) and solid organic compound at temperatures 90<sup>o</sup>C-124<sup>o</sup>C, which upon analysis using SRI 8610C GC-FID instrument showed that the products contained saturated paraffins (C<sub>11</sub>-C<sub>19</sub>) and poly aromatic hydrocarbons (PAHs) from simple naphthalene up to complex benzoperylene and indenopyrene. The use of local chalk or its mixture with inorganic base shows advantages over inorganic base lime for it reduces gases and little or no water formation in the course of pyrolysis.</em></p> 2019-04-18T08:01:09+00:00 Copyright (c) 2019 IJRDO - Journal of Applied Science (ISSN: 2455-6653) https://ijrdo.org/index.php/as/article/view/2798 Nanoparticles delivery to cancer: Approaches and limitation 2019-04-18T10:24:21+00:00 Hassan Tamam hassantamam@aun.edu.eg Jelan A. Abdel-Aleem no-reply@gmail.com Sayed I. Abdelrahman no-reply@gmail.com Aly A. Abdelrahman no-reply@gmail.com <p>Nanoparticles have received attention as promising delivery system of chemotherapy for cancer treatment. There are many mechanisms through which nanoparticles reaches the tumor site. Many nanoparticles delivery systems have been developed to solve problems associated with chemotherapeutic drugs such as solubility and stability or to increase tumor site specificity as by attachment of ligand to surface of nanoparticles. We provide a critical review about the factors affecting the delivery of nanoparticles to tumor site, mechanisms by which nanoparticles reach the tumor site, types of nanoparticles and limitation of nanomedicine.</p> 2019-04-18T10:21:35+00:00 Copyright (c) 2019 IJRDO - Journal of Applied Science (ISSN: 2455-6653) https://ijrdo.org/index.php/as/article/view/2875 A CONCEPTUAL FRAMEWORK FOR SOFTWARE REQUIREMENTS VALIDATION 2019-05-09T07:45:43+00:00 Ahmed A. Ahmed whiteblacksoft@gmail.com Ayman E. Khedr ayman.khedr@fue.edue.eg Sherif A. Kholeif ayman.khedr@fue.edue.eg <p><em>Requirements validation is one of the most significant and critical parts of the requirements engineering. This activity ensures that the set of requirements is accurate, right, complete, and consistent. Requirements validation is considered as the key activity because mistakes found in a software requirements document can lead to extensive rework costs when they are discovered either during development or after the system is in service. There are some commonly used bases to validate user requirements such as: Natural language, Design description languages, Graphical notations and Mathematical specification languages. Whereas the graphical notations are the most suitable means to be used in software requirements validation because it is easy to understand, and it can be easily created by analyst and time took. Therefore, this paper adopts the map concept which is a graphical technique for discovering the hidden flaws in software requirements in the early phases of software development lifecycle.</em></p> 2019-05-09T07:44:31+00:00 Copyright (c) 2019 IJRDO - Journal of Applied Science (ISSN: 2455-6653) https://ijrdo.org/index.php/as/article/view/2844 ANALYSE PHYSICO-CHIMIQUE DES EAUX DE LA RIVIERE TSHOPO ET SON IMPACT SUR LA VIE DES ETRES VIVANTS DANS LA VILLE DE KISANGANI 2019-05-09T08:38:17+00:00 Nathan IUNGBI SINGA nathansinga88@gmail.com Fabrice WEMBO MENDO nathansinga88@gmail.com Serginho BISELENGE NSAMBI nathansinga88@gmail.com Amos IUNGBI SINGA nathansinga88@gmail.com <p>The present research focuses on "<strong>physico-chemical analysis of the waters of the Tshopo River and its impact on the lives of living beings in the city of Kisangani</strong>"</p> <p>The Physico-chemical analysis proves that the pH of the medium is a little basic, that is to say 7.35, the temperature varies from 20 to 25 ° C and its coloration is 53 units of Jackson. The chlorine content is 0%, which allows the arrival of several microorganisms capable of facilitating the pollution of these waters. The waters of the Tshopo River are conducive to living beings from the point of view of conductivity since 0.590 were found against 4 recommended Jackson units. The chemical oxygen demand in its waters is 0.37 mg / l. The chemical analysis of the few measured ions proves that there is: 0.06 mg / l of iron; 24.05 mg / l Calcium; 8.51 mg / l Mg; 0.44 mg / l Nitrite; 0.59 mg / l of nitrate; the Hydroxymetric titre is 32.56 mg / l TH; Turbidity is 58.</p> 2019-05-09T08:33:59+00:00 Copyright (c) 2019 IJRDO - Journal of Applied Science (ISSN: 2455-6653)