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Modeling the Runoff of Mountain Rivers in the Ferghana Valley based on the Multivariate Regression Equation

Sergey Myagkov Vladimir ¹, Sherzod Khabibullaev ², Sergey Myagkov ¹

^1. Department of Hydrology, NIGMI, Bodomzor-72, Tashkent, 100052, Uzbekistan

^2. Department of Information Technology, Uzhydromet, Osyo str.72, Tashkent, 100052, Uzbekistan

sergik1961@yahoo.com

Abstract: A mathematical model of the formation of the runoff of a mountain river is constructed on the basis of the water balance equation. The water balance equation is converted into a multivariate regression equation. The regression coefficients are found and allow calculating the runoff of a mountain river based on climatic characteristics.

[Myagkov S.V., Khabibullaev Sh., Myagkov S.S. Modeling the Runoff of Mountain Rivers in the Ferghana Valley based on the Multivariate Regression Equation. Nat Sci 2021;19(7):1-4]. ISSN 1545-0740 (print); ISSN 2375-7167 (online). http://www.sciencepub.net/nature. 1. doi:10.7537/marsnsj200722.01.

Keywords: water resources, runoff, glacial runoff, snowmelt, precipitation, regression model, hydrological regime.

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ANALYSIS OF THE SPATIO-TEMPORAL CHANGES IN KARLAHI FOREST RESERVE

Samuel Hyellamada Jerry¹, Dr BA Bashir² and Prof. AA Zemba²

¹Department of Geography Adamawa State University Mubi

²Department of Geography Modibbo Adama University Yola

Samjerry455@gmail.com

Abstract: The analysis of the spatio-temporal changes that occurred in Karlahi Forest Reserve of Fufore Local Government of Adamawa State was carried out and it was aim at analyzing the trend of forest cover changes. this research adopted remote sensing methodological approaches that is, the used of acquired imageries (Landsat ETM, ETM+ and LC8) to classify Land Cover types within the forest reserve. The result of Spatio-temporal analysis of change that occurred within the Karlahi Forest reserve revealed a rapid decrease in vegetation cover types over the years. That is, 94.8 Km² out of the 122.5 Km² in 1989, 68.1 Km² in 1999, 29.8 Km² in 2008 and 23 Km² in 2019 these changes in woodland also retreat to shrubs with 22.6 Km² in 1989, 15.9 Km² in 1999, 17.9 Km² in 28 and 10.1 Km² in 2019. The decrease in woodland and shrubs was inversely proportional to bare surface with 5.1 Km² in 1989 to 89.4 Km² in 2019. This means that anthropogenic activities within the forest reserve is increasing thereby degrading the Karlahi Forest Reserve as the spatial pattern of change within the forest reserve is woodland to bare surface and shrubs to bare surfaces. this increase in bare surface is attributed to fertile soil as notice in several studies, logging activities, charcoal extraction and local policy also contributed to the degradation of the forest which are also notice by many authors that forest reserve with good soil for agriculture encourages extensive farming activities and this played in Karlahi Forest Reserve especially at the lower region of the reserve. It is recommended that Land Cover information should be incorporated in the study of forested area most especially in forest/game reserve.

[Samuel Hyellamada Jerry, Dr BA Bashir and Prof. AA Zemba. ANALYSIS OF THE SPATIO-TEMPORAL CHANGES IN KARLAHI FOREST RESERVE. Nat Sci 2021;19(7):5-14]. ISSN 1545-0740 (print); ISSN 2375-7167 (online). http://www.sciencepub.net/nature. 2. doi:10.7537/marsnsj200722.02.

Keywords: Remote Sensing, Landsat, Spatio-temporal, degradation, Bare surface, Woodland and Shrubs

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IN-VITRO ANTIMICROBIAL ASSAY AND PHYTOCHEMICAL SCREENING OF THE BIOACTIVE COMPONENTS OF DATURA METEL (GEGEMU) (LINN) ON SELECTED CLINICAL ISOLATES

Abdulraheem, I. A¹ and Awe, S²

¹Department of Food Technology, The Federal Polytechnic Offa, Offa, Kwara State, Nigeria.

²Department of Microbiology, Kwara State University, Malete, Nigeria.

Email: ismailadedapo@gmail.com

Abstract: Datura metel is a medicinal plant used as phytomedicine to treat traditionally a wide range of ailments. This study explored the in vitro antimicrobial and phytochemical properties of ethanolic extract of D. metel seed and its fractions; chloroform, n-hexane and aqueous. The antimicrobial efficacy was assayed using agar well-diffusion method. The Minimum Inhibitory Concentration (MIC) was determined using the doubling macro broth dilution method and the tubes with no visible turbidity were used for the Minimum Lethal Concentration (MLC). Both qualitative and quantitative phytochemical properties were determined with reference to the standard laboratory procedure and spectrophotometry methods respectively while the structural elucidation of the bioactive compounds was carried out using Gas Chromatography-Mass Spectrometry (GC-MS). The results showed the antimicrobial efficacies of D. metel seed extract against four selected clinical isolates Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus and Candida albicans. Escherichia coli showed the highest level of susceptibility to all the tested extractants while C. albicans showed the least. There was no visible turbidity at 25 to 100 mg/mL against all the test organisms whereas C. albicans showed visible turbidity at 25 mg/mL for chloroform and n-hexane extracts for the Minimum Inhibitory Concentration (MIC).  MLC (Minimum Lethal Concentration) of the extracts of D. metel was observed at 50 to 100 mg/mL of extract for both crude (ethanol) and aqueous solvents. Phytochemical screening indicated the presence of saponin, steroids, coumarin, flavonoids, glycosides, terpenoids and alkaloids. The quantitative phytochemical values ranged from 0.27 mg/100g to 121.03 mg/100g with flavonoids having the highest value. A total number of six bioactive compounds which included hydroxyl ethyl vinyl sulfide, dimethyldiaziridine, ethane diazo, flourooctane, urethane and propanenitrile were detected by comparing the GC-MS spectra. Flourooctane showed the highest peak in terms of abundance at the 5th minute while urethane showed the lowest abundance at the 6th minute. In conclusion all extractants used showed appreciable antimicrobial efficacies and this indicated that the seed can be used as an alternative source for new antimicrobial agents and may also serve as a good source of antioxidant due to the high level of flavonoids present.

[Abdulraheem, I. A and Awe, S. IN-VITRO ANTIMICROBIAL ASSAY AND PHYTOCHEMICAL SCREENING OF THE BIOACTIVE COMPONENTS OF DATURA METEL (GEGEMU) (LINN) ON SELECTED CLINICAL ISOLATES. Nat Sci 2022;20(7):15-28]. ISSN 1545-0740 (print); ISSN 2375-7167 (online). http://www.sciencepub.net/nature. 3. doi:10.7537/marsnsj200722.03.

Keywords: D. metel, Inhibition Zones, MIC, MBC, Phytochemicals, GC-MS

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THEME: FOUNDATION OF AYDAR-ARNASAY LAKES SYSTEM AND THEIR EFFECTS ON THE ENVIRONMENTAL LANDSCAPE

Gudalov Mirkomil Ravshanovich

Jizzakh State Pedagogical Institute

Abstract: In this article you can find the history of the Aydar-Arnasay lakes system and changes in the volume of lake water that have learned from the environmental effects of landscapes.

[Gudalov Mirkomil Ravshanovich. THEME: FOUNDATION OF AYDAR-ARNASAY LAKES SYSTEM AND THEIR EFFECTS ON THE ENVIRONMENTAL LANDSCAPE. Nat Sci 2022;20(7):29-32]. ISSN 1545-0740 (print); ISSN 2375-7167 (online). http://www.sciencepub.net/nature. 04. doi:10.7537/marsnsj200722.04.

Key words: Aydar-Arnasay lakes system, salt marshe, marshy, landscape, morphometric indication, levels of water, swing.

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Assessment of Heavy Metal Distribution and Concentration in Mining Sites (Du and Zawan) in Jos, Nigeria.

Agboola, C. K; Abata, E. O; Ogunyemi, O. J, Adebayo, A. O

Department of Chemistry, Federal University of Technology, Akure

Abstract

The purpose of this study was to assess the concentration of heavy metals in abandoned mined sites around Du and Zawan in Jos South local government.  A total of 30 soil samples were collected from the site at depth 0 to 15cm and two (2) common plant produce were collected for this study. The samples were subjected to standard methods and the heavy metals were analysed using Atomic absorption spectrophotometer. The statistical analyses were conducted using one way analysis of variance.The pH of the Du and Zuwan site is 5.33^a±0.09 and 5.43^a±0.02. The CEC of the soil samples in Du and Zawan is 6.31^a±0.11and 6.47^a±0.10 respectively.

[Agboola, C. K; Abata, E. O; Ogunyemi, O. J, Adebayo, A. O. Assessment of Heavy Metal Distribution and Concentration in Mining Sites (Du and Zawan) in Jos, Nigeria Nat Sci 2022;20(7):33-39]. ISSN 1545-0740 (print); ISSN 2375-7167 (online). http://www.sciencepub.net/nature. 05. doi:10.7537/marsnsj200722.05.

Keywords: Heavy metals, contamination, pH, concentration, and mining sites

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Economic evaluation of cereal crop production in Egyptian sandy soils

A.     M.Saad¹*; M. A. Bayoumi; Marwa, G. Mohamed; and I. A. Hegab

¹University of Florida; Agricultural Research Center (ARC); Soil, Water and Environment Research Institute (SWERI)

Corresponding author*:

Ahmed Mohammed Saad Kheir

Researcher at Agricultural Research Center, Egypt. Postdoctoral fellow at University of Florida, USA.

Emails: ahmedmkheir@ufl.edu, Ahmedkheir2015@gmail.com

Abstract: Two field experiments of Egyptian sandy soils were chosen. The main objectives of this investigation are to study and evaluate the effect of natural raw minerals, soil conditioners, their mixtures and their application rates in sandy soil subjected to different irrigation deficits on the economic yield of wheat and maize crops as well as on crop water productivity. Four types of soil conditioners (bentonite, compost, mixture of natural mineral raw materials and their mixtures 1:1:1) were mixed well to soil before cultivation. The application process was conducted through two recommended rates, the first rate represent the low (R1), while the second represent the high level (R2). Irrigation treatments were scheduled according to the moisture depletion regimes in three levels, irrigation at 30, 50 and 70 % depletion from soil available water. By summarizing these results in easy readable charts, adding soil conditioners improved crop water productivity and also increased the farm net return. The mixture from different conditioners (1:1:1) treatment realized the superiority for both experiments. The highly application rate (R2) was better than the lowest application rate (R1). Also, irrigation at 50 % depletion from available water achieved the best values of water productivity and economic evaluation in meaning of net return as well.

[M.  Saad; M. A. Bayoumi ;Marwa, G. Mohamed; and I.A.Hegab. Economic evaluation of cereal crop production in Egyptian sandy soils. Nat Sci 2022;20(7):40-54]. ISSN 1545-0740 (print); ISSN 2375-7167 (online). http://www.sciencepub.net/nature. 06. doi:10.7537/marsnsj200722.06.

Key words:Economic evaluation, water productivity, conditioners, sandy soil

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Perception and Practices of Healthy Lifestyle in Late Adolescence and its Impact on BMI: a Survey Study in Medical and Nursing Students at Tanta University, Egypt.

Hala M Elsabagh* Fatma El-Sayed Soliman**, LulahAbd El-wahab Hassan**

* Public Health and Community Medicine Department, Faculty of Medicine, Tanta University, Egypt.

**Community Health Nursing Department, Faculty of Nursing, Tanta University, Egypt.

Abstract: Background: Adolescence coincides with major changes that affect the determinants of adult health. Many adult health conditions are related to factors that develop during adolescence.  Aim: Investigate the impact of dietary habits and physical activity on BMI of late adolescent college students. Methodology: Cross sectional study was conducted in the first three years of   medical and nursing students, Tanta University. A self-administered questionnaire was used. It included questions on socio-demographic, dietary habit, physical activity and perception of healthy lifestyle.  Results: Out of 524 student (55.5%) were rural residents and (67.9%) were females. 60.7% of the students were normal weight and 31.3% were overweight. Drinking soda /sugared beverages (juices) is significantly high in obese students. More than half (53.1%) of OB students and (44.5%) of OW students usually eat snacks between meals. Physical activity is low among studied students (45%) of them did not have routine exercise. Obese and overweight students had significant negative attitude towards healthy lifestyle. Lack of time is the main barrier to adopt healthy lifestyle.

[Hala M Elsabagh. Fatma El-Sayed Soliman, LulahAbd El-wahab Hassan.Perception and Practices of Healthy Lifestyle in Late Adolescence and its Impact on BMI: a Survey Study in Medical and Nursing Students at Tanta University, Egypt. Nat Sci 2022;20(7):55-65]. ISSN 1545-0740 (print); ISSN 2375-7167 (online). http://www.sciencepub.net/nature. 07. doi:10.7537/marsnsj200722.07.

Keywords: Dietary habits, Physical activity, Lifestyle, Adolescent, Perception.

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UTILIZING DEFICIT IRRIGATION TO ENHANCE GROWTH, YIELD AND WATER PRODUCTIVITY PERFORMANCE EFFICIENCY OF OKRA.

Ransford Opoku Darko ^{1, 2}_*, Shouqi Yuan¹, Junping Liu¹, Som Shadarack Darko¹, Haofang Yan¹

1. Research Centre of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China;

2. Department of Agricultural Engineering, University of Cape Coast, Central Region, Cape Coast, PMB Ghana

Biographies: Yuan Shouqi, Professor, research interests: CFD of pumps, fluid machinery, irrigation systems, Email: shouqiy@ujs.edu.cn; Liu Junping, Associate Professor, research interests:CFD of pumps, fluid machinery, irrigation systems, Email: liujunping401@163.com; Som Shadarack Darko, Master Student, research interests: Soil and water engineering, Email: ransford.darko@ucc.edu.gh;  Yan Haofang, Associate Professor, research interests: water saving irrigation theory and technology, agricultural water management. Email:yanhaofang@yahoo.com.

*Corresponding author: Darko Ransford Opoku, Research fellow, research interests: water saving irrigation, agricultural water management, sustainable agriculture. Mailing address: Research Centre of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China; Department of Agricultural Engineering, University of Cape Coast, Ghana; Tel: +86-18651926092, Email: chiefrodark@yahoo.com.

Abstract: The research was conducted at the University of Cape Coast Teaching and Research Farm Cape Coast, Ghana, to investigate the effects of deficit irrigation on the growth and yield of okra in a field experiment. The Randomized Complete Block Design was used for the experiment with four (4) treatments (100%ETc, 90% ETc, 80% ETc, 70% ETc) replicated three (3) times. A two-day irrigation regime was used. Data collection was carried out on plant height, stem girth, number of leaves, leaf area, number of fruits per plants and average fruit weight. One-way analysis of variance was carried out to test for significant (p<0.005) as a result of the various treatment imposed. Results revealed that okra subjected to 100% ETc and 90% ETc performed better with respect to the measured parameters and results obtained for both were not statistically significant from each other. It was also observed that the 70% application of ETc gave the poorest results.

[Ransford Opoku Darko, Shouqi Yuan¹, Junping Liu, Som Shadarack Darko, Haofang Yan. UTILIZING DEFICIT IRRIGATION TO ENHANCE GROWTH, YIELD AND WATER PRODUCTIVITY PERFORMANCE EFFICIENCY OF OKRA. Nat Sci 2022;20(7):66-76]. ISSN 1545-0740 (print); ISSN 2375-7167 (online). http://www.sciencepub.net/nature. 08. doi:10.7537/marsnsj200722.08.

Keywords:  Deficit irrigation, Water Use Efficiency, Yield, Growth, Okra

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