{"title":"Antifungal activity of Parmotrema tinctorum (Delise ex Nyl.) hale and Parmotrema cristiferum (Taylor) hale against seed mycoflora - A comparative study","authors":"T. Kekuda, K. Vinayaka","doi":"10.4314/star.v5i1.12","DOIUrl":"https://doi.org/10.4314/star.v5i1.12","url":null,"abstract":"Lichens are composite organisms comprising of a photobiont and a mycobiont. Studies have shown that extracts and secondary metabolites from lichens exhibit various bioactivities. The present study evaluates antifungal potential of crude methanolic extract of two corticolous Parmotrema species viz. Parmotrema tinctorum (Delise ex Nyl.) Hale and Parmotrema cristiferum (Taylor) Hale against a panel of fungi isolated from seeds of maize and groundnut. Extraction of powdered lichens was carried out by maceration process using methanol. Antifungal activity was evaluated by poisoned food technique. Both extracts were effective in causing dose dependent inhibition of radial growth of test fungi in poisoned plates. Among lichens, marked inhibitory activity was shown by P. cristiferum. At 1mg/ml concentration, P. cristiferum displayed an inhibition of >50% of all test fungi. The antifungal activity of two Parmotrema species against seed mycoflora could be ascribed to the presence of secondary metabolites in extracts.","PeriodicalId":196424,"journal":{"name":"Science, Technology and Arts Research Journal","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129471147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Application of different lime rates and phosphorus on soil physico-chemical properties of acid soils in western Ethiopia","authors":"Bodena Guddisa, T. Tana, H. Legesse","doi":"10.4314/STAR.V5I1.13","DOIUrl":"https://doi.org/10.4314/STAR.V5I1.13","url":null,"abstract":"Soil acidity and phosphorus deficiency are the major yield limiting factors to crop production in Haro Sabu area, western Ethiopia. Thus, a field experiment was carried out in 2014 main cropping season from the end of June to the end of November at Haro Sabu to assess the effect of lime and phosphorus rates on soil physico-chemical properties of the experimental soil . The treatments were factorial combination of five rates of phosphorus (0, 11.5, 23, 46, 57.5 kg P2O5) and four rates of lime (CaCO 3 ) (0, 2.25, 3 and 3.75 tons ha-1) in randomized complete block design and replicated three times. The pre soil analysis indicated that the soil of experimental area was acidic (pH = 5.31) and low in available P (2.34 mg kg -1 ). The soil textural class was sandy clay loam with constituents of sand (53%), clay (19%) and silt (28%). Application of both lime and phosphorus to the experimental plot increased exchangeable Ca, available phosphorus and total nitrogen while decreased exchangeable aluminum. Therefore, application of lime and phosphorous on acid soil improves the pH of the soil, there by the availability of phosphorous and cations.","PeriodicalId":196424,"journal":{"name":"Science, Technology and Arts Research Journal","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129937960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Oromo Oral Pun (Miliqqee): Confusion with Oromo Idiom (Jechama) focusing on Yadate's Miliqqee part of 'Qorii Qorsaa', western Oromia, Ethiopia","authors":"Teshome Guteta Kitessa","doi":"10.4314/STAR.V5I1.19","DOIUrl":"https://doi.org/10.4314/STAR.V5I1.19","url":null,"abstract":"Puns are language arts that globally got broad attention, but in Oromo language, the researcher has found some mere collections of puns in confusion with idiom. The purpose of this study was to identify the general problems, confusion between Oromo pun and Oromo idiom, and to investigate factors for Yadate's confusion based on miliqqee part of Yadate's \"Qorii Qorsaa\". The nature of the study was of a qualitative and quantitative type and the data were analysed by describing the existing qualities of the puns on theoretical basis. The tools used were content analysis, questionnaire and interview. The result shows that idiomatic meanings have been used as puns, was confusion of puns with idioms. As to the analysis, the confusion occurred mainly due to lack of awareness on the nature of puns and idiom and to some extent by fixedness and using concept from cross-cultural communication. Some of the recommendations for solution are: encouraging researches and availing publications on miliqqee, and including them in Oromo language curricula beginning from lower grades. Keywords : Confusion Concealing Items Oromo Oral Pun Literal Meaning Idiomatic Meaning","PeriodicalId":196424,"journal":{"name":"Science, Technology and Arts Research Journal","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121330681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yonas Mitiku, Defaru Thomas, Fasica Mersha, Firew Hailu, Elias Semeredin
{"title":"Design and manufacturing of mechanical steering system for parallel parking, zero turning radius, minimum turning radius with traditional turning","authors":"Yonas Mitiku, Defaru Thomas, Fasica Mersha, Firew Hailu, Elias Semeredin","doi":"10.4314/star.v5i1.14","DOIUrl":"https://doi.org/10.4314/star.v5i1.14","url":null,"abstract":"Many existing cities in the world were not built according to population of cars. Therefore drivers find it difficult to park their car on crowded streets and to turn in small spaces. However it is possible to design cars to suit traffic conditions of the cities. Two wheel steering system has a drawback of demanding wide area because of comparatively larger turning radius. Currently most cars are using traditional steering system, but this system is difficult comparing to parallel parking method. Zero turning radius helps the vehicle rotating about an axis passing through the centre of gravity of vehicle rather than describing a circular path as in conventional turning. The aim of this research is to develop a combined mechanism of parallel parking, zero turn radius, minimum turning and traditional turning for automobiles. All the parts of the steering system are designed so as to meet all the configuration of steering system and to be well-matched to the power train, suspension system and body of the car. The steering system is designed for the car which is designed and manufactured at Bahir Dar Institute of Technology, Bahir Dar University which has the overall dimension of 1200 X 1450mm. After manufacturing of the parts, it had been assembled and ready for testing. The testing results showed that zero turning radius will reduce the turning radius up to 70% and parallel parking also make our life easy and reduce time consumption during parking and to pullout car from traffic jam. Minimum radius turn configuration will reduce the turning radius of vehicle about 36% compare to traditional steering mechanism. Keywords : Steering System Traditional Turning Minimum Turning Radius Zero Turning Radius Parallel Parking","PeriodicalId":196424,"journal":{"name":"Science, Technology and Arts Research Journal","volume":"222 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128616852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Treatment of students’ English oral errors at Shambu preparatory school: Grade 11 in focus","authors":"Leta Regasa, T. Olana","doi":"10.4314/star.v5i1.18","DOIUrl":"https://doi.org/10.4314/star.v5i1.18","url":null,"abstract":"The study was conducted in an attempt to investigate teachers’ treatment of students’ oral errors in EFL classes at Shambu Preparatory School. Descriptive survey design was used to investigate the major identified students’ oral errors, to find out the types of oral error treatments EFL teachers provide and to investigate the techniques they use to treat students’ oral errors. Interview and observation were used as instruments of data collection. The participants of the study were two English language teachers of grade 11 who were comprehensively selected to participate in interview and get their classes observed as well. The results indicated that there were 66 oral errors made by students which were categorized into 10 as pronunciation, tense, verb group, agreement, noun group, preposition, word order, article, wrong numbers and adjectives. The findings also showed 13 types of oral error treatments were made by the targeted teachers as provide, transfer, praise, explanation, question, interruption, acceptance, repetition, use of blackboard, ignore, negation and clues, prompt and criticism. Furthermore, it revealed that teachers used three techniques of oral error treatments as Teacher correction, Self correction and peer correction giving more room to teacher correction which is not pedagogically sound. Therefore, to alleviate the students’ linguistic problems, the targeted teachers are required to give appropriate oral error treatments. Besides, it would be better if the teachers give students the chance of self correction instead of playing the lion’s role by themselves Keywords : Oral Error Mistake Utterance Shambu EFL teachers","PeriodicalId":196424,"journal":{"name":"Science, Technology and Arts Research Journal","volume":"276 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121957957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evaluation of physicochemical properties and sensory attributes of leavened bread produced from composite flours of wheat ( Triticum aestivum L. ) and sweet potato ( Ipomoea batatas L. )","authors":"D. H. Mitiku, S. Abera, N. Bussa","doi":"10.4314/star.v5i1.15","DOIUrl":"https://doi.org/10.4314/star.v5i1.15","url":null,"abstract":"This study was initiated with the objective of investigating the use of improved sweet potato variety namely, Adu for bread production by combining with wheat flour. The experiment was carried out in a completely Randomized Design with three replications. The sweet potato variety was evaluated in five blending ratios of 0%, 5%, 10%, 15%, 20% and 25%. The breads of the composite flours of wheat and sweet potato resulted in significant reduction in crude protein, crude fat and energy contents whereas the ash, crude fiber, and carbohydrate contents were increased significantly. High vitamin A contents was found in breads with 25% sweet potato flours. Sensory acceptability evaluation based on color, appearance, flavor, texture, and taste showed no significant (P˃0.05) difference between breads having 0 and 5% sweet potato. The sensory acceptability scores of breads remained within the liking range, i.e 6 and above in scale of 9 for sweet potato variety. Adu sweet potato flour therefore could be added to wheat flour up to 25% to produce breads of acceptable sensory quality and enhanced nutrition. Keywords: Sweet potato Bread Sensory attributes Composite flours","PeriodicalId":196424,"journal":{"name":"Science, Technology and Arts Research Journal","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128052483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Influence of career self-efficacy beliefs on career exploration behaviours among TVET college students in Wollega zones town","authors":"G. Tadele, Enkosa Terefe","doi":"10.4314/STAR.V5I1.17","DOIUrl":"https://doi.org/10.4314/STAR.V5I1.17","url":null,"abstract":"The purpose of this study was to determine the extent to which influence of career self-efficacy beliefs on career exploration behaviour of TVET college students. A total 238 TVET college students from the three Wollega Zone were selected using multistage sampling methods. The instrument of data collection was self- report questionnaire were career self-efficacy adapted (Nasta, 2007), and Career Exploration behaviour (Stumpf et al., 1983). Data was analyzed using Pearson correlation for career self-efficacy beliefs and career exploration behaviour, and regression analysis used to predicate influence of career self-efficacy on career exploration behaviour. Result of research indicated that career self-efficacy sources were positive influenced and statistical significantly correlated with career exploration behaviour(r= .408, P<.01). The career self-efficacy has positive and strong statistically significant association with past performances accomplishment of the students (r= .752, P< .01). However, it was statistically significant and has weak relationship with career exploration behaviour (r= .214, P<.05).Verbal persuasion is more significant association (r = .555, P<.01) to career exploration behaviours than other sources. Multiple liner Regressions analysis shows that, approximately 17% of variance in the career exploration behaviour was significant prediction by career self-efficacy beliefs. In conclusion, career self-efficacy a belief is positively influenced career exploration behaviour among TVET college students Keywords : TVET college Behaviour Western Ethiopia Career Exploration","PeriodicalId":196424,"journal":{"name":"Science, Technology and Arts Research Journal","volume":"22 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131638601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Teachers’ knowledge, attitude and practices of inclusive education in Nekemte town and its surrounding government primary schools","authors":"Dessalegn Terfassa Moti, Adugna Bersissa Merdassa, Kasech Tadesse Dessalegn","doi":"10.4314/star.v5i1.16","DOIUrl":"https://doi.org/10.4314/star.v5i1.16","url":null,"abstract":"This study was conducted to investigate teachers’ knowledge, attitude, and practices of inclusive education in Nekemte town and its surrounding government primary schools; and how their knowledge and attitude towards inclusion affect the practice of inclusive education. The participants of the study were primary school teachers and principals. Equal numbers of teachers were included into the study both from Nekemte town (62 teachers) and its surrounding government primary schools (62 teachers). One principal from each school, totally six principals were participated. Data was collected using a Likert type scale questionnaire. Descriptive statistics, hierarchical multiple regression, and series of one way MANOVA were used in the analysis. The result indicated that Primary school teachers had slightly moderate knowledge about inclusive education and predominantly neutral attitude towards inclusive education. The result also indicated that primary school teachers in the study area rarely practice inclusive education. Knowledge of the teachers significantly contributed to the practice of inclusive education, while attitude of teachers did not. No statistically significant differences were found between teachers due to their sex, training, teaching experience in their knowledge, attitude, and practices of inclusive education, while statistically significant difference was observed between urban and rural primary school teachers in their practices of inclusive education. Raising awareness of teachers about inclusive education, the need to equip teachers with theoretical knowledge and practical skill of inclusive education, and making school environment accessible are some of the recommendations suggested. Keywords : Inclusive education Teachers’ attitude Primary Schools Knowledge Practice","PeriodicalId":196424,"journal":{"name":"Science, Technology and Arts Research Journal","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122246762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effects of different proportions of dried cafeteria leftover inclusion in a concentrate mix on performance of growing pigs","authors":"Tesfaye Amene, M. Urge, Mitiku Eshetu, D. Diba","doi":"10.4314/STAR.V5I1.4","DOIUrl":"https://doi.org/10.4314/STAR.V5I1.4","url":null,"abstract":"An experiment was conducted to evaluate the effect of inclusion of dried Cafeteria leftover (DCLO) at various levels in concentrate mix (CM) on feed intake, digestibility, average daily gain (ADG), feed conversion ratio (FCR), carcass characteristics, and economic benefits of weaned pigs at Haramaya university piggery. Twenty Yorkshire pigs with initial live weight of 19.89±0.297kg (mean±SE) were randomly assigned to four dietary treatments in a completely randomized block design each with five replicates. The experimental rations were sole CM (mixture of maize grain, wheat short, wheat bran, noug seed cake, soybean mill, vitamin premix and salt), replacement of the concentrate with DCLO at different proportions as (33%CM and 67% DCLO; 67% CM and 33% DCLO) and feeding with only sole DCLO. The mean feed intake ranged 1.6-1.82kg/day and ADG was 0.4-0.64kg/day. The least feed intake was for sole DCLO (P<0.05) and the highest for 67% CM:33%DCLO. The FCR (w/w) was lowest (P<0.05) for pigs fed 33% DCLO diet, and pigs fed 67% DCLO:33%CM achieved highest FCR. Crude protein digestibility did not differ between treatments, but DM, EE and CF digestibility increased with increasing level of DCLO in the diets. The mean carcass weight (43.7kg-57.02kg) was highest in 67% CM but lowest in sole DCLO. Back fat thickness (2.4cm-3.2cm (SEM=±0.03)) was lowest in sole CM but highest in sole DCLO. The highest and lowest (P<0.05) rib eye area (23.9 cm2-31.9cm2 (SEM=±0.81)) were recorded for sole CM and sole DCLO, respectively. Cost of feed per kg weight gain was declined significantly (P<0.01) with increasing level of DCLO. Despite the lower production cost of sole DCLO groups, the pigs showed lower performance and this must have contributed to lowest net return of the groups. Thus, it is concluded that DCLO can replace the conventional concentrate mix up to 67% without adverse effect on pig performance. Keywords : Carcass Digestibility Live Weight Gain Nutritive Value Profitability","PeriodicalId":196424,"journal":{"name":"Science, Technology and Arts Research Journal","volume":"363 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116689991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Quality analysis of breads produced from blends of wheat ( Triticum aestivum L ) and Anchote ( Coccinia abyssinica L. )","authors":"D. H. Mitiku","doi":"10.4314/star.v5i1.9","DOIUrl":"https://doi.org/10.4314/star.v5i1.9","url":null,"abstract":"Bread making is currently limited to wheat and a few other commonly used cereal seeds in many countries. The study was conducted with the general objective of quality evaluation of breads produced from blends of wheat (Triticum aestivum L) and Anchote (Coccinia Abyssinica L). The result of proximate composition of composite breads of wheat and Anchote ranged from 4.00 to 5.89% for moisture, 1.00 to 2.03% for Ash, 4.25 to 5.35% for protein, 1.54 to 2.14% for fat, 0.43 to 0.93% for fiber, 90.37 to 91.25% for carbohydrate and 404.96 kcal/100g for energy. The iron and zinc content increased as the supplementation of Anchote flours increased from 5 to 15% and the calcium content was decreased. The Antinutritional contents of the result showed that as the supplementation level of Anchote flour increased, the phytate, oxalate, tannin and cyanide content were increased. Generally, the study revealed the effect of replacement of wheat flour with Anchote flour (5 to 15%). As the addition of Anchote flour increased from 5 to 15%, the overall acceptability decreased even though the produced breads were accepted. Anchote flour can be used for different food product development as it enhances the mineral and also fibers which is good for the health of human being. Keywords : Anchote Bread Proximate composition Minerals Antinutritional factors","PeriodicalId":196424,"journal":{"name":"Science, Technology and Arts Research Journal","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116672702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}