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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 15 Documents
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Search results for , issue "Vol 4, No 4 (2022): Budapest International Research in Exact Sciences, October" : 15 Documents clear
The Paradox of Demand-Supply and Price Dynamics during Covid-19 Pandemic: A Comparative Study on Pharmaceutical, Bakery and Table-Water Companies in Lagos, Nigeria Edih O. University; Dbright O. Agboro; Irejeh E. Minna
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.v4i4.7237

Abstract

The sudden emergence of Covid'19 pandemic amounts to monumental disruptions in global economic activities due to stringent measures such as lockdown of international and local transport systems and social distancing that were drafted to curtail the surging scourge. It might be a probable cause of the noticeable dramatic dynamics in demand, supply and prices of goods and services. The study examined the paradox of demand-supply and price dynamics during covid'19 pandemic: a comparative study of pharmaceutical, bakery and table water companies in Lagos, Nigeria. The study employed structured questionnaires to generate primary data which were analyzed using chi-square method corroborated by oral interview. A total number of 90 set of questionnaire were distributed to 30 selected companies. Results revealed that there were no price variation in pharmaceutical products, bakery products and table water companies’ products during the first wave. This is because the restriction of movement did not affect essential commodities and international borders were open for pharmaceutical goods as well as other essential products. However, interview report showed that there were moderate increase in demand for bakery and table water companies products with no corresponding rise in prices. It was made possible by active policy directives of the national and state governments that were implemented by monitoring groups. The paper suggests that during global exigencies, the net of essential commodities should be widened and their prices controlled as well as avoid artificial hoarding to meet up with the upsurge in demand which is a necessary outcome during epidemic.
Effect of the Amount of lipids on the growth of Oreochromis Niloticus (L) in Kisangani, (Rdcongo) Serge Munganga Kabate
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.v4i4.6984

Abstract

A study has been undertaken in Kisangani area using experimentally two different types of feed RO and R12 in order to verify the lipids effect on Tilapia niloticus growth rate. It resulted from the study that Tilapia niloticus has doubled weight during all the experience. According to the t test of STUDENT calculated between the gain of body mass of fish fed with the food R0 supplemented with 12% of palm oil and those fed with the R12 non supplemented diet with palm oil showed a non-significant difference (P<0,05). The SGR (Specific Growth Rate ‘‘SGR’’) appeared meaningfully and significantly correlated to the fed. The addition of the palm oils to the food improves the specific growth rate varying between 2, 62 %. day for the food supplemented with 12% of lipids (palm oil)), and 1, 34%. day for the food without lipids.  The results of mortality rate during this experience did not seem being correlated to the different diet but rather to the manipulation of fish and other experimental protocols artefacts.  The protein content of the carcasses of Tilapia varied between 0,043% for the food R0 and 0,056% for the food R12.  The diet R12 appeared performing compared to the diet R0 according to body protein gain by unit of consumed protein and for the weight gain by unit of consumed protein by Tilapia niloticus.
Ethnobotanical Survey and Sociocultural Uses of Two Plant Species of the Genus Alstonia (Apocynaceae) in the Kungu Territory (South Ubangi) in the Democratic Republic of the Congo J.B.Z. Bosanza; K.N. Ngbolua; D.B. Manzongo; C.A. Masengo; M. Monizi
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.v4i4.7127

Abstract

The aim of the present study is to provide actors interested in herbal medicine with endogenous knowledge on the medicinal and traditional uses of Alstonia boonei and A. congensis in the Kungu territory. The survey revealed that both are widely used either alone or in combination with other species and contribute to the treatment of many diseases. Endogenous knowledge of these two species and their medicinal-traditional uses reveal that 23 kinds of diseases are treated, of which snakebite the only disease is commonly treated by the three sociocultural groups targeted in this study, namely Bomboma, Ngbandi, and Ngombe. Of the different plant parts used in the preparation of therapeutic recipes, bark dominates with 58.8%, followed respectively by sap (22.4%), leaves (12.9%), and roots (5.9%). Finally, as forests are increasingly threatened, it would be imperative to preserve these two medicinal species by developing, for example, their cultivation and thus guarantee a sustainable and regular supply of organs used as raw materials in the preparation of medicinal recipes.
A Root Cause Failure Analysis (RCFA) on the Primary Air Fan (Pa Fan) Motor at Pangkalan Susu Power Plant Absalom Andika Simamora; Siti Anisa; Solly Aryza
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.v4i4.7251

Abstract

PA Fan (Primary air fan) is equipment that functions to suck air from the atmosphere which aims to supply air to the coal pulveriser to dry the coal and transfer the coal ash to the boiler. PA Fan in operation has tripped with an indication on the protection panel OP_ROC. This ROC indication appears due to an indication of a short circuit to ground or an imbalance of currents between phases which causes a zero connection current. When the local inspection was carried out, it was found that there was a burnt insulator on the S side phase. This resulted in the motor losing one phase and causing ROC (Residual Over Current) protection on the 6 kV protection module to work.
Study of Building Techniques and Deterioration Phenomena of Salty Limestone in Archaeological Buildings Applied on Oracle Temple in Siwa Oasis Mahmoud Abdel Hafiz; Ali Abdel-Motelib; Rabea Radi Abdel Kader
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.v4i4.6986

Abstract

Archaeological buildings are exposed to many factors of damage to the surrounding environment, especially in Siwa Oasis, where the Temple of Oracle of Alexander the Great or the so-called Temple of Amun. It was made of salty limestone, which was examined by a scanning electron microscope (SEM), the examination showed the extent of the weakness and deterioration of the condition of the stone. The analysis was also done by X-ray fluorescence. It was found that the proportions of chlorine, sodium and potassium elements were high, which means the presence of halite (NaCL) and potassium chloride (KCL) salts among the components of the stone beside calcium carbonates CaCO3 (calcite), also, monitoring and study of the most important deterioration aspects to the temple that threaten its security and safety were conducted, in preparation for the development of a controlled treatment plan on scientific bases.
Ethnobotanical Value of Myrianthus arboreus Used in Traditional Medicine by the Ngbaka Tribe (South-Ubangi), Democratic Republic of the Congo Pascal N. Bobuya; Jetron M. Ngbolondo; Jean Pierre K.A. Zwave; Colette Masengo Ashande; Muhammad Ridwan; Koto-Te-Nyiwa Ngbolua
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.v4i4.7128

Abstract

The aim of this study is to contribute to a better knowledge of the use of M. arboreus as a medicinal plant traditionally used in the treatment of common diseases by the Ngbaka people in the South Ubangi, Democratic Republic of the Congo. Based on free consent of the respondents, an ethnobotanical survey was carried out using a questionnaire among the Ngbaka healers. The aim of this study is to contribute to a better understanding of the use of M. arboreus as a medicinal plant traditionally used in the treatment of common diseases by the Ngbaka people in the South Ubangi. Based on consent of the respondents, an ethnobotanical survey was carried out using a questionnaire among the Ngbaka healers. The results obtained in this study allowed us to identify 23 diseases that are treated by Myrianthus arboreus. The organs of M. arboreus used for the treatment of diseases are mainly the leaf (96%), the bark of the stem (66%), the fruits and seeds (42%) and the roots (34%). The main methods of preparation of the organs were decoction (86%) and maceration (66%), while the administration of the recipes is predominantly via oral (86%) and cutaneous route (68%). The vast majority of respondents use M. arboreus organs for the treatment of abscesses (17 citations), sinusitis (15 citations) and tooth decay (15 citations), and wounds with 13 citations.  This work provides a source of information that can be used as a basis for pharmacological studies to assess therapeutic effectiveness.
Study on Planning for 150 Kv Outdoor System Substation at Substation Paya Geli, North Sumatra Jury Yanto Tarigan; Siti Anisah; Hamdani Hamdani
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.v4i4.7252

Abstract

The substation is an important part of the power system. In addition to substations for power generation, they must be able to distribute power reliably and safely. In this study, based on the SPLN standard, I analyzed and calculated the components of the Paya Geli substation so that the selected components could actually conduct electricity properly and safely. The selection of the substation components in Paya Geli was based on these calculations and criteria. From this it can be concluded that the design results of the Paya Geli substation are in accordance with the design.
Impact of Anthropization on the Copper and Zinc Contents of Urban Soils. Case of the Concession of the Company Textile for Kisangani (SOTEXKI) in Kisangani in the Province of Tshopo in DR Congo Kombele M; Ofeka L; Bola D; Kirongozi F; Ugencan D; Lifafu H; Kakuni J; Kombele F
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.v4i4.7005

Abstract

This research has set itself the task of studying the impact of anthropization on the copper and zinc contents of urban soils in the concession of the Textile company of Kisangani (SOTEXKI) in Kisangani in the Province of Tshopo in the DR. Congo. To do this, the soil samples were taken from 6 soil slices: 0-10, 10-20, 20-30, 30-40, 40 -50 and 50-60 cm, thus giving a total of 18 spot samples per substation, i.e. a total of 126 grab samples with the reference station (dense forest). The 126 composite samples were reduced to 42 composite samples for all 7 substations using the auger. Conditioned, these samples were subjected to copper and zinc assays using an atomic absorption spectrophotometer using the ammonium acetate method at pH7 in the presence of EDTA. The results obtained show the following trends:- Soil copper content is higher is 387.95 µg/g and lower with 2.08 µg/g compared to all other land uses, the average soil zinc content is higher with 632 .98 µg/g and lower with 3.85 µg/g compared to all the other land uses of our neighboring station at the SOTEXKI/Kisangani plant. In general, the surface slices of the soils of different substations are richer in copper and zinc. Although generally higher than those of our reference (dense forest), the average values of the levels observed in our various substations are also higher compared to the global critical threshold (20-30 mg/kg of soil). - At this level of research, it is too early to certify that these levels are dangerous for human consumption of agricultural products from the soil of these substations. The impacts of anthropization are negative at the level of zinc, which means that the activities practiced in all the substations in our neighboring station to the factory of the textile company of Kisangani/Kisangani have drawn on the reserves of their soil in zinc more than copper, although in smaller quantities than for the latter.
Analysis of Inverter Drive Working System as 3-Phase AC Motor Rotation Speed Regulator Prido Singarimbun; Siti Anisah; Hamdani Hamdani
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.v4i4.7228

Abstract

The use of induction motors in industry and factories is more profitable than DC or synchronous motors, one of the advantages is easy maintenance and high efficiency. On machines in the industry speed regulation is necessary. Along with the development of power electronics, this has become very easy to do, namely by supplying the motor with a variable speed drive (VSD) inverter. With a variable speed drive inverter supply, it is possible to adjust the motor speed by adjusting the voltage frequency. This study was conducted to determine the effect of variable frequency by using a variable speed drive inverter on the performance of a three-phase induction motor. Tests were conducted at frequencies of 5, 10, 15, 20, 25, 30, 35, 40, 45, and 50 Hz (inverter frequency) and the motor was loaded with 0.5Nm. From the study, it was concluded that, among other things, the use of a variable speed drive inverter resulted in greater motor losses and the motor produced a louder sound. At the same frequency (50 Hz) the motor efficiency is better when supplied directly from the power grid.
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%).

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