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Budapest International Research in Exact Sciences (BirEx Journal)
Published by Budapest International Research and Critics University Journal
ISSN : 26557835     EISSN : 26557827     DOI : DOI: https://doi.org/10.33258/birex
Core Subject : Science, Agriculture, Engineering,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Physics Transportation
Budapest International Research in Exact Sciences (BirEx-Journal) is a peer reviewed journal published in January, April, July, October welcome research paper in Medical Science, Agriculture Science, Biological Science, Engineering Science and other related areas and it is published in both online and printed version
Arjuna Subject : Ilmu Material (semua kategori) - Ilmu Material (Lain-Lain)
Articles 276 Documents
 18   19   20   21   22 
Influence of the Season on Armyworm (Spodoptera frugiperda J.E. Smith) Attacks on Some Bio-fortified maize (Zea mays L.) Varieties Introduced in Kisangani Eco-region (Democratic Republic of the Congo) D. Bangambingo; B.D. Nzawele; C.L. Inkoto; A.K. Lubobo; O. Mubenga; K.N. Ngbolua; G. Monde
Budapest International Research in Exact Sciences (BirEx) Journal Vol 4, No 4 (2022): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v4i4.6982

Abstract

The present study was conducted in the Kisangani region of the northeastern Democratic Republic of Congo in 2018-2019. The objective was to evaluate the influence of the seasons in the face of armyworm attacks on the behavior of three new biofortified maize varieties being introduced in the Tshopo Province. These trials were conducted using a split plot design with three replications and the results were analyzed using R Studio version 3.6 statistical software. The results at (p<0.05) show that all three varieties were attacked by armyworms. The overall average incidence was significantly similar to that of the control. During two cropping seasons, the maize varieties tested showed variable armyworm attack rates: Yellow Plata (14.16%) SAM4 VITA/A (18.05%) SAM4 VITA/B (16.44%) and PVA SYN- 18 F2'' (14.66%). As for the variation of attack between seasons, the results of the statistical analysis showed that season B had a higher attack rate (25.54%) than season A (6.11%).
Alternative Centrifugal Pump Maintenance Systems Using Reliability Centered Maintenance (RCM II) and Life Cycle Cost (LCC) Methods in PDAM Surya Sembada Surabaya Andita Rizki Ramadani; Joumil Aidil Saifuddin; Dira Ernawati
Budapest International Research in Exact Sciences (BirEx) Journal Vol 4, No 4 (2022): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v4i4.7369

Abstract

The purpose of this study was to determine the pump failure factors, determine alternative pump maintenance intervals as an alternative maintenance policy, and minimize maintenance costs using the cost calculation method (LCC).  In this study, observations and interviews were carried out to obtain data related to the centrifugal pump machine. From the LCC (Life Cycle Cost) calculation above, it can be seen based on table 4.20, it is found that the smallest cost value is in year (n) = 5 with the number of mechanics (M) = 3 with the result of calculating a total cost of Rp. 1,515,507,735. So, it can be concluded that TC2 < TC1 with these results, the proposed method in this study is accepted. The maintenance interval for each centrifugal pump component is for the Impeller of 1,673 hours by selecting the Discard task, Shaft of 698 hours by selecting the scheduled restoration task, Bearing by 322 hours by selecting the scheduled restoration task, Coupling by 698 hours by selecting the scheduled restoration task, Mechanical seal for 2,131 hours with the selection of the scheduled discard task. The results of the calculation of the total cost of Rp. 1,515,507,735 as TC2 with a total company cost of IDR 1,600,000,000. So, it can be concluded that TC2 < TC1.
Influence of Non-incineration System on Soil Carbon/Nitrogen Ratio Values of Yakonde (Y2) Series under Cassava Cultivation in Yangambi, D.R. Congo Kombele M; Motondo M; Motosia A; Kolela B; Ugencan D; Lifafu H; Kombele F; Kakuni J; Kombele FM
Budapest International Research in Exact Sciences (BirEx) Journal Vol 4, No 4 (2022): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v4i4.7006

Abstract

The objective pursued in this research was to assess the potential of cassava cultivation in the non-incineration of cut plant biomass in the management of the stock of organic carbon and its main component in the soil, namely its C/N ratio. . To do this, five cassava cultivars have been introduced including: Obama, M'vuazi, Disanka, Zizila and Sansi. These five cultivars were planted in forest fallow in plots each measuring 0.48ha and repeated four times on the Yakonde series (Y2) on the Isalowe plateau in Yangambi. These plots were developed in non-incineration of biomass and from where 108 disturbed soil samples were taken in two groups, one of 54 samples at one month and the other of 54 samples at six months. culture in soil slices 0-20 and 20-40cm deep. These 108 samples made it possible to evaluate the stock of organic matter (M.O.S), total organic carbon (TOC), total organic nitrogen of the soil in order to determine the values of the carbon/nitrogen ratio at one and six months of age of cultivation of five varieties of cassava. M.O.S under the varieties Disanka (21.2±1.0%), Obama (19.6±0.7%) and Sansi (19.5±2.1%) at six months of age in the 0 range -20cm. While under Obama and Disanka, they were lower and respectively 6.1±1.3% and 7.0±2.9% in the 0-20cm age group at one month. The highest average soil TOC values were observed at six months of age under the Disanka (12.3±0.6%), Obama (11.6±0.7%) and Sansi (11. 3±1.3%) in the 0-20cm range; while the weakest were at one month of age under the varieties Obama (3.5 ± 0.8%) and M'vuazi (4.1 ± 1.7%) in the 20-40cm range. The average values of soil Nt contents which vary from 0.4±0.0 to 1.0±0.0% at the surface and from 0.4±0.1 to 0.9±0.4% at depth under the five varieties of cassava were found to be numerically superior to those of the soil under the old secondary forest in the two slices of soil studied (respectively by 0.5±0.1% and 0.2±0.1%). For the two slices of soil studied, the highest values in Nt of the soil (0.9±0.1% and 1.0±0.0% for the slice of 020cm; 0.9±0.4% and 0.9±0.1% for the 20-40cm slice) are observed at six months of age respectively under the Sansi and Disanka varieties. As for the C/N ratio, it decreases with the depth of the soil, except for the Zizila and Disanka varieties at one month of age. The highest mean values are observed under Sansi (12.4±2.8) at one month of age and under Disanka (12.3±0.3) at six months of age in the 0-20cm range; the weakest are under Obama (7.7±7) at one month and under Zizila (7.5±0.6) at six months of age in the 20-40cm range. In fact, the highest mean value of the C/N ratio remains that of the control forest taken as the reference forest.
Modification of Electrical Supplay System on Fuel Feeder Gas Engine Power Plant Based on Inverter (DC-AC) in PLTMG Balai Pungut Muhammad Fadlan Syahputra; Siti Anisah; Adi Sastra P Tarigan
Budapest International Research in Exact Sciences (BirEx) Journal Vol 4, No 4 (2022): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v4i4.7229

Abstract

The Balai Pungut Gas Engine Power Plant (PLTMG) is one of the plants in the Pekanbaru sector and part of the North Sumatra Plant (KITSBU). This PLTMG has a capacity of 7 x 17 MW with dual fuel systems, namely Solar and Gas. For gas fuel, it is the main fuel of PLTMG because the gas efficiency is higher than diesel. However, diesel fuel is the main fuel that must be used for PLTMG engines as gas fuel, so diesel fuel must be supplied continuously for the consumption of PLTMG needs. Therefore, the Fuel Feeder system for Solar fuel must have reliable performance. However, at PLTMG Balai Pungut, there are often problems or problems with the Fuel Feeder, this is because the protection system shows the occurrence of a Fuel Feeder travel system that occurs in fuel feeder equipment components that experience voltage input instability. After analysis due to the impact of resources in the SUTT System Network as a supply center line experienced Transient. Therefore, the Power Supplay Electrical System for Fuel Feeder equipment needs to be modified with the addition of an inverter, the source of which is taken from the battery as a source of constant direct voltage and voltage converted back and forth to play the electricity system of the Fuel Feeder PLTMG Balai Pungut.
Effects of Fertilization, Variety and Season on Fall Armyworm Attack on Bio-fortified Maize Production in the Kisangani Eco-region (Democratic Republic of the Congo) D. Bangambingo; B.D. Nawelze; O. Mubenga; A.K. Lubobo; C.L. Inkoto; K.N. Ngbolua; G. Monde
Budapest International Research in Exact Sciences (BirEx) Journal Vol 4, No 4 (2022): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v4i4.6983

Abstract

Faced with soil impoverishment and irregular rainfall caused by climate change, a study has been initiated on the cultivation of bio-fortified maize in Kisangani in the Northeast of the Democratic Republic of the Congo. The study aimed at evaluating fertilization effects, new bio-fortified maize varieties and the season (Zea mays L) on production in the face of armyworm infestation. The split-plot experimental set-up was used, the first factor has been the variety and the second the fertilizers. The results have highlighted that the application of fertilizers at the sowing time does not significantly influence any production parameter. However, experimented maize varieties have differently behaved depending on seasons when the armyworm infestation.
Elaboration of the Piezometric Map of the Superficial Aquifers of the Town of Isiro (Haut- Uélé, DR Congo) Faidance Mashauri; Mokili Mbuluyo
Budapest International Research in Exact Sciences (BirEx) Journal Vol 4, No 4 (2022): Budapest International Research in Exact Sciences, October
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v4i4.7025

Abstract

This study developed in the town of Isiro in the province of Haut-Uélé, in the north-east of the Democratic Republic of the Congo, made it possible to produce a piezometric map of the superficial aquifers of this town using the triangle interpolation method. The quality of the groundwater studied was assessed by analysing a number of physico-chemical (temperature and pH) and bacteriological (total coliforms, faecal coliforms, faecal streptococcus and Escherichia coli) parameters. Two major superficial hydrogeological units have been defined, one unit consisting of lateritic formations and the other of ancient and modern Quaternary alluvium. The groundwater flow is mainly local, with water flowing over short distances from topographically high points. The hydraulic gradient varies between 0.02 (or 2%) and 0.06 (or 6%) with an average of 0.038 (or 3.8%). The depth map of the piezometric surface indicates that the water table is deeper on the plateaus (over 7m) than in the valleys. The flow rates of the springs vary according to the amount of rainfall. Temperatures ranged from 23.7 to 30.9°C. The pH values show that the analysed waters are strongly to slightly acidic (pH between 3.5 and 6.6). The groundwater studied shows a high level of bacteriological pollution.
The Impact of Wheat Row Planting on Farmer’s Livelihoods, in Case of Wayu Tuka Woreda East Wollaga Zone, Oromia -Ethiopia Lelisa Mamo Abdisa
Budapest International Research in Exact Sciences (BirEx) Journal Vol 5, No 1 (2023): Budapest International Research in Exact Sciences, January
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v5i1.7390

Abstract

The aim of the study was to saw the Impact of wheat row planting to on farmer’s livelihoods in case of Wayu Tuka Woerda in East Wollega Zone., Oromia Rgion, Ethiopia. Wheat crop planting is a highly valuable grain for Ethiopian people both in production and in consumption. The objective of the research was to investigate the impact of the adoption of wheat row planting on farmer livelihoods in study area. The study was based on cross sectional research which was included both qualitative and quantitative research approach. The data were collected from total 135 respondents selected from three kebels of Wayu Tuka Woerda by using random sampling method. From the total 135 respondents 82 were wheat row planting adopters while 53 were non wheat row planting adopters. Both primary and secondary data used and analysed using descriptive statistics, logit and propensity score matching model. The software used for data entry and analysis were STATA14.2. The results show that about 61% of the respondents are users of wheat row planting whereas 39% can be classified as non-adopters of wheat row planting. The empirical Results revealed that the overall impact evaluation of the study by Propensity Score Matching shows that the average yield output of the participant groups on wheat row planting farm exceeds livelihoods of the non-adopter group by 19,626.18 ETB. Finally, wheat row planting has significant impact on farmer’s livelihoods increment. It is better to encourage farmer households as they actively participant in wheat row planting technology and support them by giving training, supplying agricultural inputs and adopting new technology for them with adequate skills for enhancing their annual livelihoods and development of the country economy.
Influence of Chromolaena odorata Mulch on Amaranthus hybridus L. Yield Under Agro-ecological Conditions of Gbado-Lite, Democratic Republic of the Congo Molongo Mokondande Médard; Ngalakpa Ziada Héritier; Walengo Peter; Bolombe Lolue Augustin; Muhammad Ridwan; Koto-Te-Nyiwa Ngbolua
Budapest International Research in Exact Sciences (BirEx) Journal Vol 5, No 1 (2023): Budapest International Research in Exact Sciences, January
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v5i1.7391

Abstract

The aim of this study was to evaluate the effect of Chromolaena odorata mulch on the yield of Amaranth under the agroecological conditions of Gbado-Lite. The experimental design chosen was that of randomized complete blocks with 3 replications and each of these replications had 4 plots or 4 treatments. The treatments were as follows: T0: control plot (no amendment); T1: mulching at 18 kg per plot or 25 t/ha; T2: mulching at 36 kg per plot or 50 t/ha; T3: mulching at 54 kg per plot or 75 t/ha. The results show that with mulching, in the first trial, 6.7; 8.8; 16.5 tons per hectare were obtained; however, in the second trial, or by exploiting the residual effects, 1.8 tons per hectare were obtained; 15; 18.3; and 37.1 respectively for the control plots; plots mulched with 25 t/ha of Chromolaena odorata; with 50 t/ha of C. odorata and with 75 t/ha of C. odorata. The experiment demonstrated that mulching improves the yield of amaranth and especially its residual effects on the crop.
Physico-chemical Characterization of the Waters of Balobo, Tributary of the Ngiri River, Middle Basin of the Congo River, Democratic Republic of the Congo Bedi Ngalanza Benjamin; Nyongombe Utshudienyema; Monzambe Mapunzu Paul; Kitambala Kaboka Achille; Inkoto Liyongo Clément; Koto-Te-Nyiwa Ngbolua
Budapest International Research in Exact Sciences (BirEx) Journal Vol 5, No 1 (2023): Budapest International Research in Exact Sciences, January
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v5i1.7392

Abstract

A study was conducted between December 2021 and July 2022, to contribute to the physico-chemical characterization of the waters of Balobo, a tributary of the Ngiri River, Middle Congo River Basin in Democratic Republic of the Congo. These waters have particular physico-chemical characteristics: brown waters known to be acidic, with a sour taste, with low light penetration, which raises questions in relation to the diversity and abundance of fish. Some physico-chemical parameters of the water (velocity, flow rate, temperature, pH, Secchi transparency, turbidity, dissolved oxygen, total dissolved solids, ammonium and nitrate) were determined in situ and in the laboratory of the Faculty of Sciences of the University of Kinshasa. The results obtained show that the average morphometric values of the stream are: width (8.10±1.03 m), depth (0.81±0.023 m), velocity (0.094±0.04 m/s) as well as flow (0.59±0.4 m3/s). The water temperature of Balobo varies between 23.9°C and 29.8°C, with an average of 27±1.04°C. The waters of Balobo are brown with low Secchi transparency oscillating between 23 cm and 67 cm, with an average of 46.1±14.6 cm and turbidity especially in the dry season characterized in May by a minimum Secchi of 20 cm and a maximum of 30 cm, with an average of 25.6 cm. Turbidity ranges from 63.4 to 109.8 NTU, with an average of 92.5±14.4 NTU. The waters of Balobo are highly acidic, with pH ranging from 3.1 to 4 with an average of 3.4. Their dissolved oxygen content is very low and varies between 1.03 and 2.7 with an average of 1.62±0.5 mg/L. Total dissolved solids in the Balobo water ranged from 57.1 to 101.3 mg/L with an average of 83.8±15.23 mg/L. Ammonium content in Balobo water ranged from 0.150 to 1.097 mg/L, or an average of 0.613±0.5 mg/L. Nitrate content ranged from 1.02 to 2.06 mg/L with an average of 1.35±0.4 mg/L.
The Used of Communication and Mobilization by Lake Chad Research Institute Maiduguri, Borno State, Nigeria Modu Alhaji Bukar; Mai Dunoma Zanna
Budapest International Research in Exact Sciences (BirEx) Journal Vol 5, No 1 (2023): Budapest International Research in Exact Sciences, January
Publisher : Budapest International Research and Critics University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33258/birex.v5i1.7465

Abstract

This study is to examined the used of communication and mobilization by Lake Chad Research Institute Maiduguri, Borno State. However, in order to set a stage for such examination there are an indispensable need to look at concepts related to communication. The study subdivided into: abstract, introduction, literature review, methodology, findings, conclusion and recommendations. Survey method was adopted some people were interview.  The findings show that the organisation prepared to use radio, newsletter, famers help centre, extension guide, famer’s field day, training, Demonstration Farm, magazine communicate to the famers effectively. The study conclude that the organisation ensured the communication between institute and the farmers and other stakeholders is concise, precise and without any form of distortion if their objectives are to be realized. The study recommend that All communication whether verbal or written should be clear, precise and without ambiguity.

Page 20 of 28 | Total Record : 276

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