https://journals.wu.edu.et/index.php/ajst/issue/feed Abyssinia Journal of Science and Technology 2020-12-31T11:24:32-05:00 Editor-in-Chief editor.ajst@wu.edu.et Open Journal Systems <p><strong>Abyssinia Journal of Science and Technology (AJST)</strong> is newly established African scientific journal publishing from Wollo University, Ethiopia. It is an international, peer-reviewed and an open access scientific journal publishes two times per year. This journal publishes original research articles, short communications and occasionally reviews articles that generate the significant contribution in the field of science and technology. Its scope covers all aspects of National Sciences, Agricultural Sciences, Medical and Veterinary Sciences &amp; Engineering and Informatics.</p> <p>To qualify for publication, a manuscript must contribute to the understanding of science and technology by presenting either new and original research data as a full research article or in short communication format or review of a particular topic related to science and technology.</p> <p><strong>Date of Publishing: </strong>Every year first issue in <strong>JUNE </strong>and the second issue in<strong> DECEMBER</strong></p> https://journals.wu.edu.et/index.php/ajst/article/view/113 Infestation, Damage and Distribution of Blue Gum Chalcid on Eucalyptus camaldulensis Dehnh in Eastern Amhara, Ethiopia 2020-12-31T06:27:44-05:00 Tigabu Redae * redtiges1980@gmail.com Adane Tesfaye redtiges1980@gmail.com Seid Muhie redtiges1980@gmail.com <p>Blue Gum Chalcid (BGC), Leptocybe invasa Fisher and La Salle (Hymenoptera: Eulophidae), causes high damages on Eucalyptus camaldulensis Dehnh in many countries including Ethiopia. This study aimed to determine the damage, damage severity and distribution of the BGC on Eucalyptus camaldulensis plantations in Eastern Amhara, Ethiopia. The assessment was conducted at Tehuledere (South Wollo zone), Habru (North Wollo Zone) and Dawa Chefa (Oromia adminstration zone) districts. These districts were selected purposively for continuous infestation. Three sites per district with a total of nine sites were selected. Assessments were done from four coppiced and five plantations. A minimum of 0.25 ha and five trees per site were assessed in a monthly interval. The assessment result revealed that BGC was found in all the three districts of the three zones. During the assessment, it was found that from five trees the damage severity were 20% nil, 15.6% low, 20% medim, 22.2 high, and 22.2% high. Severity and damage of the pest varied across the study sites and the assessment months. Lower and higher severity damages were observed at Amumo (0.48) and Passo sites (3.26) of Tehulederie district, respectively. Increment in damage severity was observed from November to February except at Amumo (from 0.48 to 0.87), with higher increments in January and February 2019 (averagely from 2.24 to 3.23).</p> 2020-12-31T00:00:00-05:00 Copyright (c) 2020 Abyssinia Journal of Science and Technology https://journals.wu.edu.et/index.php/ajst/article/view/114 Selection of Trees and Shrubs Species for Frost Prone and Degraded Highland of Legambo Woreda, South Wollo, Amahra Region, Ethiopia 2020-12-31T06:36:16-05:00 Beyene Bezabih Hailu* beyeneb2012@gmail.com <p>High altitude a forestation in South Wollo has been difficult due to lack of adaptable tree species and partly due to stressful environmental conditions. This study is intended to select the best-performing tree species for frost prone highlands of south Wollo. <em>Erica arborea</em>, <em>Hagenia abyssinica</em>, <em>Eucalyptus globulus</em>, <em>Hypericum revolutum</em>, <em>Populus</em> species, <em>Chamaecytisus palmensis</em>, and <em>Juniperus procera</em> were evaluated in a randomized complete block design with three replications. Five seedlings from each species were planted with one-meter spacing in a plot. Spacing between plots and blocks was 1.5 m and 2 m, respectively. Data collected include plant height, root collar diameter, and number of branches, which were measured at an interval of six-months period, and for three years. One-way Analysis of Variance results showed the presence of significant variation in measured parameters. <em>Eucalyptus globulus</em> has demonstrated the highest result in seedling height and root collar diameter at the end of three years. <em>Populus</em> species, <em>Chamaecytisus palmensis</em>, and <em>Juniperus procera</em> showed the second, third, and the fourth better growth performance.</p> 2020-12-31T00:00:00-05:00 Copyright (c) 2020 Abyssinia Journal of Science and Technology https://journals.wu.edu.et/index.php/ajst/article/view/112 Challenges in Utilization of Precious Opal in Ethiopia: A Case Study from the Delanta Area, South Wollo, Ethiopia 2020-12-31T00:18:24-05:00 Assamen Ayalew Ejigu * eaa@kioe.edu.et Desalegn Gezahegn Ketemu eaa@kioe.edu.et Sisay Awoke Endalew eaa@kioe.edu.et Wudu Yimer Assen eaa@kioe.edu.et <p>Even if, the Delanta precious opal is promising natural resources for economic development and expansion of gemstone industry, there are serious problems faced in utilization of the resource. This study aimed to assess the major problems affecting the utilization of opal resources in Delanta district, Ethiopia, and to recommend possible solutions to the main actors of the sector. In this study, statistical methods and fishbone diagrams were employed and the data for the study was collected using interviews, focus group discussions, and physical observation. The results of the study revealed that there are problems which can be categorized into four main categories: mining technique related problems (opal cracking problem due to traditional mining tools, inappropriate handling, and land sliding accidents), market-related problems (such as poor national and international market attachment, meager promotion, unfair market price, corrupted and illegal marketing practices), problems related to value addition (shortage of modern lapidary machines, lack of domestic skills for jewelry production, poor monitoring mechanisms for value addition, low local market price of value-added products and lack of access to sell value-added opal products to the international market and skill gaps of opal cutters) and problems related to lack of environmental impact assessment (deforestation, land degradation and pH change of land soil due to waste disposal). In general, the results of this study indicates that, even though the study area has a promising opal potential, problems related to marketing system, mining, and value addition practices are serious challenges hindered the surrounding community and the country as a whole not to utilize the resource properly.</p> 2020-12-31T00:00:00-05:00 Copyright (c) 2020 Abyssinia Journal of Science and Technology https://journals.wu.edu.et/index.php/ajst/article/view/115 Effects of Twelve Weeks Resistance Training on Physical Performance of Young Football Players of Dessie City, Amhara Region, Ethiopia 2020-12-31T06:44:52-05:00 Wubet Muluye Kassahun * wubetuman@gmail.com Kidest Biyadglegn Mesele wubetuman@gmail.com <p>This study scrutinizes effects of resistance training on physical performance of young male football players. 34 amateur volunteered football players were grouped randomly as control or nonresistance training group (n=17, age = 19.47±1.33 years, weight = 58.74±3.23 kilogram and height = 166.24±4.44 centimeter) and experimental or resistance training group (n=17, age = 19.88±1.36 years, weight = 59.65±2.46 kilogram and height = 167.12±4.39 centimeter). During the intervention, both groups continued their customary training sessions but the experimental group performed resistance exercises 2 times a week for 12 weeks, while control group did not. Participants’ agility, speed, and power skills of both groups were assessed by Illinois agility run test, 30-meters sprint test, and vertical jump test respectively before and after 12 weeks of resistance training. The result of the investigation indicated that the mean difference of speed, agility, and power in the control group was found to be (0.03 seconds, 0.01 seconds, and 0.53 centimeters respectively) revealed insignificant (p&gt;0.05) when compared to the pre and post-test mean scores. While the mean difference of speed, agility, and power in the experimental group was found to be (0.67 seconds, 0.75 seconds, and 4.82 centimeters respectively) showed that there were significant differences between the pre-test and post-test results (p&lt;0.05). According to the outcomes of this study, resistance training which was employed in addition to football training can improve players' agility, speed, and power skills.</p> 2020-12-31T00:00:00-05:00 Copyright (c) 2020 Abyssinia Journal of Science and Technology https://journals.wu.edu.et/index.php/ajst/article/view/116 Fungicidal Management of Field Pea (Pisum sativam L.) Powdery Mildew (Erysiphe polygoni DC) Disease 2020-12-31T06:56:18-05:00 Mequanint Andualem * mequanint09@gmail.com Walellign Zegeye mequanint09@gmail.com Gebremariem Asaye mequanint09@gmail.com Girmay Dires mequanint09@gmail.com Melkamu Birhanie mequanint09@gmail.com Zenebu Legesse mequanint09@gmail.com <p>Ethiopians produce peas primarily to prepare their traditional dish called shiro. It is not wrong to say that most Ethiopians eat enjera with shiro wot once a day or a three day. Therefore, recognizing the importance of the crop, farmers in Koga Irrigation scheme have started producing peas, but have constraint to grow crops due to the powdery mildew disease. Therefore the experiment was conducted to evaluate and recommend effective fungicides against powdery mildew of field pea. The experiments were conducted during 2019 G. C cropping season through irrigation by using completely randomized block design (RCBD). The result of the experiment shows that, spraying of tebuconazole, propiconazole and Triadimefon can reduce the disease in to 81%, 77.6% and 68.2%, respectively compared to untreated control. Correspondingly, spraying of thus fungicide increase seed yield by 33.5%, 29.6% and 28.8%, respectively, as compared to the untreated control. Therefore, the application of tebuconazole, propiconazole and triadimefon is recommended for the management of powdery mildew on field pea crop.</p> 2020-12-31T00:00:00-05:00 Copyright (c) 2020 Abyssinia Journal of Science and Technology https://journals.wu.edu.et/index.php/ajst/article/view/118 Rapid Synthesis of CuFeS2 Nanoparticles Using Microwave Irradiation for Therapeutic Applications 2020-12-31T10:42:50-05:00 Wubshet Mekonnen Girma * wubshet.mekonnen@wu.edu.et <p>Nanoparticles (NPs) are a class of new materials, with less than 100 nm in diameter and exhibit enhanced size dependent properties as compared to larger particles of the same material. We describe the rapid microwave irradiation protocol for the synthesis of ternary CuFeS2NPs, by reacting Cu, Fe, and S precursors in aqueous system. This one-pot facial synthesis strategy features shorter reaction time, easy process control, low energy consumption, and absence of a temperature gradient. The obtained NPs morphology and crystallite was characterized using TEM and XRD techniques, respectively. Furthermore, the obtained NPs, magnetic and fully water soluble, showed broad optical absorbance from the visible to the near infrared region could be applied for photothermal therapy and magnetic resonance imaging applications for future biomedical use.</p> 2020-12-31T00:00:00-05:00 Copyright (c) 2020