Phosphorus Desorption Study Using Dialysis Membrane Tube Filling Fe-Al-Mn Ternary Mixed Nanocomposite from Different Farming Practice of Acidic Soil

Knowledge of the effect of the P remaining in the soil (residual effect) is of great importance for fertilization recommendation. Environmental applications of nanotechnology address the development of solutions to the existing environmental problems, preventive measures for future problems resulting from the interactions of materials with the environment. For this purpose, Fe-Al-Mn ternary mixed oxide nanocomposite adsorbent with 70, 25 and 5 percentage composition of Fe, Al, Mn respectively was synthesized by impregnation method. Its crystal structure was hematite with 20.31 nm size and 69.93 m2/g surface area. The study of phosphate desorption was carried out on different farming practices with four types of treatments: Sole Maize conventional practice (SMCP), Sole Maize conservational agriculture (SMCA), Sole Haricot bean conservation agriculture (SHCA) and Maize-Haricot bean intercropping conservation agriculture (MHCA). The simulation of phosphate desorption from soil to plant was predicted by dialysis membrane tube filled with the ternary mixed nanocomposite (DMT-FeAlMn). DMT-FeAlMn was founded to be the promising adsorbent to simulate the plant–phosphate relation in acidic soil or to estimate the properties of soil for phosphate desorption to the soil solution. The observed desorbed of phosphate was significant in the treatment order of SMCP < SHCA < SMCA < MHCA. The releasing rate of phosphate from soil followed first order kinetics having SMCP (R2 = 0. 996), SMCA (R2 = 0.997), SHCA (R2 = 0.993), and MHCA (R2 = 0.991) with rate constant 0.0006hr-1. Keywords: Desorption, Nanosized Fe-Al-Mn mixed oxide, Residual soil-phosphate, Farming practic

Financial Inclusion and its Determinants among Households in Jimma Zone of Oromia Regional State, Ethiopia.

In majority of the developing countries, access to finance is demanded more for the middle and low income community and considered as a public good, which is as important and basic as access to safe water, primary education, etc. The researcher used hybrid of qualitative and quantitative approach. Exploratory research design was used in exploring and developing financial literacy frame work to study in the Ethiopian context as there is no financial literacy framework developed previously. Descriptive research design was used in describing the existing level of financial literacy, financial inclusion, saving behavior, the relationships between financial literacy and saving habit, the demographic and socio-economic characteristics of the study area. For the purpose of the study, the sample size taken for the study was 173 households. A descriptive statistics and inferential statistics were used to attain the objective of the research.  The probit regression model produced similar results as those obtained using the logit model showed that age, education, financial literacy, and income are positively related to financial inclusion and distance to the nearest provider of financial services negatively impact financial inclusion. It is possible to reduce determinates of financial inclusion with regulating well the financial system, creating healthy competition and building better enabling environment. Identifying and segregating the root causes and addressing it properly appear to be removing the distance, services charge and credit barriers. On the other hand, market for financial services failures and behavioral problems related to customer tend to be addressed through designing of appropriate financial products. Removing those challenges and expanding financial inclusion tend to be possible with the promise of latest technologies

Financial Literacy and its Determinants among Households in Jimma Zone

Financial literacy become a topical issue in academics and policy circles, both in developed and developing countries, for the fact that low level of financial literacy prevailing across the world. The objective of the study calls for a quantitative research design and particularly a cross sectional survey research approach. The research focused on the urban area of Jimma Zone because of the fact that required financial literacy and financial behavior of rural and urban household operating at various level of financial decision making scenario is better to be studied separately since the main purpose is to provide input for designing a targeted financial literacy education. Generally, female encountered different problem in the society and did not aware about the financial services and products delivered by the financial institution. Therefore, female level of financial literacy is low compared to their male counter.The study indicated that literacy in general and household literacy in particular has a very close relationship to acquire financial literacy and financial knowledge. In general, as the academic level of household increase, their saving behavior showed improvement.Government has to take the major role in installing the saving culture through financial literacy and financial inclusion. In addition the government stabilization of inflation, implementing forced saving, modernization and accessible the saving institution, stabilization of the income level of household and reviewing the saving interest rate is vital to see adult financially literate and economically able in the near future

Anaemia, anthropometric undernutrition and associated factors among mothers with children younger than 2 years of age in the rural Dale district, southern Ethiopia: A community-based study

Mothers in resource-poor settings are affected by different forms of undernutrition. However, the nutritional status of mothers in rural areas, particularly after delivery, is not well documented. This study assessed haemoglobin levels and body mass index (BMI) of mothers with children below 2 years of age in a rural district of southern Ethiopia. Factors associated with low haemoglobin levels and low BMI were analysed. A community-based cross-sectional study was conducted among 931 mother-child pairs. Structured and standard questionnaires were used to collect data on background information, 24 h dietary recalls, and household food insecurity. Anthropometric and haemoglobin level assessments were performed. Anaemia was defined as haemoglobin levels below 12.0 g/dl, and anthropometric undernutrition was defined as a BMI <18.5 kg/m2. Multilevel linear regression was used to determine associations. Out of 931 mothers, 12.8% were anaemic and 12.6% had a BMI <18.5 kg/m2. The prevalence of minimum dietary diversity was 37.8%. The majority (78.5%) of the households were food insecure. Weight (β 0.02; 95% CI: 0.003−0.03), dietary diversity (β 0.08; 95% CI: 0.03−0.12) and secondary school attendance (β 0.34; 95% CI: 0.08−0.59) were associated with the mothers' haemoglobin level. Dietary diversity (β 0.08; 95% CI: 0.01−0.16) and household's wealth (β 0.6; 95% CI: 0.27−0.94) were associated with the mothers' BMI. Findings suggest that education and community-based nutrition interventions must be strengthened to ensure household food security. Implementation of the national food-based strategies should be considered, to improve the dietary diversity and nutritional status of mothers.publishedVersio

Dietary practices and nutritional status of young children in the former ensete monoculture dominated Sidama region, southern Ethiopia: A community based cross-sectional study

Background: Child undernutrition is a challenge in Ethiopia, where morbidity and mortality among children are attributed to it. This study aimed to describe the dietary practices, household food insecurity, and nutritional status of young children in Dale district, Sidama region, southern Ethiopia. We discuss our findings in light of research from the same area 3 to 5 decades ago, and we analyze factors associated with linear growth of young children. Method: A community-based cross-sectional study design was employed. Children less than two years old and their primary caretakers (n = 903) were included in this study. Among whom 791 children were aged above six months and 742 children out of 791 provided a 24-hour dietary recall. Interviews capturing other dietary practices, food insecurity, socio-demographic characteristics, anthropometric measurements, and haemoglobin assessments were performed for all. The WHO Child Growth Standards were used to calculate anthropometric indices and to describe stunting (length-for-age z-score <-2). Haemoglobin measures below 11g/dl were defined as low haemoglobin levels (anaemia). Multilevel linear regression was used to identify factors associated with length-for-age z-scores. Result: The prevalence of stunting, wasting, and anaemia was 39.5%, 3.9%, and 61.7%, respectively. The majority of children (97%) ate cereals (maize) during the past 24 hours, and 79.6% of households use maize as the main food. Three fourth (75%) of the total households were food insecure ranging from mild to severe food insecurity. Boys were at higher risk of having lower length-for-age z-score than girls (β -0.53; 95% Confidence Interval (CI): -0.78, -0.27). For each month the children grew older, length-for-age z-score decreased slightly (β -0.06; -0.07, -0.04). Household food insecurity scores (β -0.05; -0.08, -0.01) and children haemoglobin levels, (β 0.21; 0.06, 0.35) were also associated with length-for-age z-score among young children. Conclusion: Linear growth failure (stunting) was prevalent among young children in the rural Sidama region and the majority of them were also anaemic. Older age, male sex, a lower haemoglobin level in children, and household food insecurity were risk factors of linear growth failure in young children. Maize seems to be the dominant food in this previously ensete dominated area; however, there have been minimal improvements in length-for-age z-score over decades. Strategies to ensure household’s food access and improve the quality of child diets need to be implemented.publishedVersio

Integrated geophysical imaging of the Aluto-Langano geothermal field (Ethiopia)

The Aluto-Langano geothermal system is located in the central part of the Main Ethiopian Rift, one of the world\u2019s most tectonically active areas, where continental rifting has been occurring since several Ma and has yielded widespread volcanism and enhanced geothermal gradient. The geothermal system is associated to the Mt Aluto Volcanic Complex, located along the eastern margin of the rift and related to the Wonji Fault Belt, constituted by Quaternary NNE-SSW en-echelon faults. These structures are younger than the NE-SW border faults of the central Main Ethiopian Rift and were originated by a stress field oblique to the rift direction. This peculiar tectonism yielded local intense rock fracturing that may favour the development of geothermal reservoirs. In this paper, we present the results of an integrated geophysical survey carried out in 2015 over an area of about 200 km2 covering the Mt Aluto Volcanic Complex. The geophysical campaign included 162 coincident magnetotelluric and time domain electromagnetic soundings, and 207 gravity stations, partially located in the sedimentary plain surrounding the volcanic complex. Three-dimensional inversion of the full MT static-corrected tensor and geomagnetic tipper was performed in the 338-0.001 Hz band. Gravity data processing comprised digital enhancement of the residual Bouguer anomaly and 2D-3D inverse modelling. The geophysical results were compared to direct observations of stratigraphy, rock alteration and temperature available from the several deep wells drilled in the area. The magnetotelluric results imaged a low-resistivity layer which appears well correlated with the mixed alteration layer found in the wells and can be interpreted as a low-temperature clay cap. The clay-cap bottom depth is well corresponds to a change of thermal gradient. The clay cap is discontinuous, and in the central area of the volcanic complex is characterised by a dome-shape structure likely related to isotherm rising. The propilitic alteration layer, pinpointed as the 80-Ohm-m isosurface, shows two dome-shape highs. The first is NNE-trending, and may be interpreted as an upflow zone along a fault of the Wonji belt. Two productive wells are located along the borders of this area, as well as the alignements of fumaroles and altered grounds. The second is linked to a wide resistive area, located at shallow depth, where no clay cap was detected. It could be interpreted as a fossil high-temperature alteration zone reaching shallow depths, and it is associated to several fumaroles. Modeling of 2D/3D gravity data shows that the anomalies are due to shallow density variations likely related to lithology. The deep lateral variations due to structural lineaments inferred from well stratigraphy have no detectable signature. However, the trend analysis performed on the residual Bouguer anomaly (via horizontal and tilt derivative computations), allowed to identify five lineaments. Three of them exhibit NNE-SSW strike, corresponding to the Wonji Fault Belt Trend, whereas two have NNW-SSE strike, corresponding to the Red Sea Rift trend, which in this area is of minor evidence. The signature of shallow structures is then indicative of major regional structures. One of the lineaments marks the presence of a major fumarolic zone

Multidisciplinary exploration of the Tendaho Graben geothermal fields

The NW-SE trending Tendaho Graben is the major extensional feature of the Afar, Ethiopia. Rifting and volcanic activity within the graben occurred mostly between 1.8 and 0.6 Ma, but extended to at least 0.2 Ma. Very recent (0.22\u2013 0.03 Ma) activity is focused along the southern part of the younger and active Manda Hararo Rift, which is included in the north-western part of the graben. Extension gave rise to about 1600 m of vertical displacement (verified by drilling) of the basaltic Afar Stratoid sequence, over a crust with a mean thickness of about 23 km. The infill of graben, overlying the Stratoids, consists of volcanic and sedimentary deposits that have been drilled by six exploratory wells. Within the graben, two main geothermal fields have been explored by intensive geological, geochemical and geo- physical surveys over an area that approximately covers a square sector of 40x40 km. Both new and existing data sets have been integrated. The Dubti-Ayrobera system is located along the central axis of the graben. Available data, acquired in the last three decades, comprise more than two thousands gravity and magnetic stations, 229 magnetotelluric stations and structural-geological and geochemical observations. The Alalobeda system is located along the SW flank of the graben, at about 25 km from the Dubti-Ayrobera system and has been very recently stud- ied by means of gravimetric (300 stations), magnetotelluric and TDEM (140 stations) geological and geochemical surveys. The new residual magnetic anomaly map has been used to map the younger normal polarity basalt distribution and infer the location of the unknown main rift axis. The bedrock surface resulting by the 3D inversion of the new residual Bouguer anomaly enlightens the main normal faults hindered by sediments and the secondary structures represented by horsts and grabens. The three-dimensional resistivity models allow mapping the sedimentary infill of the graben, fracture zones in the Afar Stradoids bedrock and the dome-shape structure of the clay cap layer. The 2D and 3D gravimetric, magnetic and resistivity models have been integrated with the structural, geological and geochemical outcomings in order to get an updated conceptual model of the geothermal systems

Immunogenicity and efficacy of non-adjuvant tissue culture-based rabies vaccine produced in Ethiopia

Rabies is 100% fatal, but it is preventable. More than 95% of human rabies cases occur in improperly treated individuals. This is partly due to the fact that modern post-exposure rabies prophylaxis is expensive and therefore not readily available in many endemic regions. Nervous tissue vaccine has been in use for more than 100yrs. These vaccines have now been superseded in purity, potency, immunogenicity and safety. The efficacy and immunogenicity of inactivated tissue culture rabies vaccine, produced in Ethiopia was evaluated. Twelve experimental dogs from local breed were duly conditioned during a quarantine period and assigned to two groups randomly. Animals in group I (cases) were vaccinated subcutaneously with 1 ml of our experimental vaccine. Dogs in group II served as non-vaccinated controls. The immune response of each dog was monitored for 90 days. On the day 90 after final sampling, all dogs were challenged in the masseter muscle with a rabies street virus of canine origin. To evaluate the titer of the rabies virus neutralizing antibodies (VNA), sera were analyzed by Fluorescent Antibody Virus Neutralization (FAVN) Test. Geometric Mean Titers (GMT) to rabies virus was determined at days 7, 15, 21, 30, 60 and 90. Geometric mean titers were equal to 1.59, 1.73, 2.19, 3.58, 3.17 and 3.35 IU/ml respectively. All dogs showed VNA titers higher than the 0.5 IU/ml mandated WHO recommended threshold. All vaccinated dogs, survived the challenge. In contrast, 83.3% of dogs in the control (non-vaccinated group), developed rabies and died. This study indicated that cell culture-based anti-rabies developed inhouse, with no adjuvant is efficacious and immunogenic

Marker based enrichment of provitamin A content in two tropical maize synthetics

Open Access Journal; Published online: 22 July 2021Most of the maize (Zea mays L.) varieties in developing countries have low content of micronutrients including vitamin A. As a result, people who are largely dependent on cereal-based diets suffer from health challenges due to micronutrient deficiencies. Marker assisted recurrent selection (MARS), which increases the frequency of favorable alleles with advances in selection cycle, could be used to enhance the provitamin A (PVA) content of maize. This study was carried out to determine changes in levels of PVA carotenoids and genetic diversity in two maize synthetics that were subjected to two cycles of MARS. The two populations, known as HGA and HGB, and their advanced selection cycles (C1 and C2) were evaluated at Ibadan in Nigeria. Selection increased the concentrations of β-carotene, PVA and total carotenoids across cycles in HGA, while in HGB only α-carotene increased with advances in selection cycle. β-cryptoxanthine increased at C1 but decreased at C2 in HGB. The levels of β-carotene, PVA, and total carotenoids increased by 40%, 30% and 36% respectively, in HGA after two cycles of selection. α-carotene and β-cryptoxanthine content improved by 20% and 5%, respectively after two cycles of selection in HGB. MARS caused changes in genetic diversity over selection cycles. Number of effective alleles and observed heterozygosity decreased with selection cycles, while expected heterozygosity increased at C1 and decreased at C2 in HGA. In HGB, number of effective alleles, observed and expected heterozygosity increased at C1 and decreased at C2. In both populations, fixation index increased after two cycle of selections. The greatest part of the genetic variability resides within the population accounting for 86% of the total genetic variance. In general, MARS effectively improved PVA carotenoid content. However, genetic diversity in the two synthetics declined after two cycles of selection