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Abstract

The aim of the study carried out during 2002–2004 was to assess the effects and economic effectiveness of application of fungicides and insecticides in winter triticale crops. Its leaves were attacked by pathogenic fungi in 43.2% to 52.2% and the damage to leaf blade surfaces by cereal leaf beetle (Oulema spp.) ranged from 23.6% to 34.4%. The effectiveness of applied fungicides ranged from 44.7% to 90.8%, and that of insecticides was within 70.1% and 94.4%. The saved crops were evaluated for PLN 198 to 1 171 per ha. The cost coverage ratio ranged from 0.7 to 9.9 and the treatment profitability index ranged from 0.9 to 7.4. Cost index in percentage ranged from 0.8 to 8.5, with its average value of 4.2.

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Authors and Affiliations

Zdzisław Kaniuczak
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Abstract

The fundamental concepts of nano and quantum systems of informatics have been presented. The nanotechnological processes taking place in biological systems of informatics have been discussed in terms of informatics. Presented analysis shows that the application of nanotechnologies in the technical informatic systems enables realization of processes for formation of products and objects with self-replication feature, similarly to the processes existing in biological informatic systems. It seems also that the quantum technologies enable further miniaturization of the technical systems of informatics as well as make the execution time of some computing processes like, e.g. Shor's and Grover's algorithms, shorter.

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Authors and Affiliations

S. Węgrzyn
J. Klamka
L. Znamirowski
R. Winiarczyk
S. Nowak
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Abstract

The aim of this work was the determination of the influence of the size of grain moth eggs on qualitative characteristics of Trichogramma evanescens (Hymenoptera: Trichogrammatidae) from the second to the seventh generations. The indicators of T. evanescens determine its ability to provide effective plant protection. Using selected large eggs of grain moth T. evanescens reproduction was carried out. As controls, eggs that had only been cleaned were used. These studies were performed with T. evanescens from second to seventh generations. The correlation between the size of grain moth eggs and indicators of T. evanescens such as the level of search ability, the level of regeneration of individuals, the relative number of females, the level of deformed individuals, the lifespan and the fecundity of females were determined. The influence of the size of grain moth eggs on the T. evanescens class was determined. It was found that the use of large grain moth eggs for the production of T. evanescens allowed for maintaining its first class quality from the second to the seventh generations. Trichogramma evanescens from grain moth eggs, which had only been cleaned, had first class quality only up to the fourth generation.
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Authors and Affiliations

Gennadii Golub
1
Oleh Marus
1

  1. Department of Tractors, Automobiles and Bioenergy System, National University of Life and Environmental Sciences of Ukraine, Kyiv, Ukraine
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Abstract

Realising the need for improving irrigation system management, the Bahr Sanhoor Canal (BSC) was selected as a case study, and the effect of covering a reach with a concrete box culvert where the irrigation canal passes through a crowded rural area on the efficiency of the canal system was examined. The field inspection of the canal system revealed multiple problems. Two alternatives for improving irrigation management were introduced. A local alternative was offered by applying a suitable numerical model to enhance the efficiency of the current status of the canal system, the water level upstream of the covered part reached 13.54 m, this solution will lower the water levels by approximately 2 m, which is below the bank levels at an affordable cost. Additionally, it will help to avoid the risk of inundating the adjacent residential area. A sustainable and environmental alternative was considered to offer a new path in which the covered reach passed outside the residential area. This alternative is permanent and sustainable. Although the proposed second path to the right of the residential area is the long-term recommendation and is sustainable, any path of flow to either the left or right of the BSC will be associated with initial high costs. The two proposed alternatives may help decision makers improve the performance of irrigation systems.
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Authors and Affiliations

Amir Sabry Ibrahim
1
ORCID: ORCID

  1. Civil Engineering Department, Benha Faculty of Engineering, Benha University, Benha, Egypt
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Abstract

Aiming to create more sustainable cities it is necessary to understand and manage different ecological factors which influence human health. One of such factors is black carbon (BC) in atmosphere, which currently is not commonly monitored by environmental monitoring systems. The aim of this research was to estimate by indirect approach the relation between eBC (equivalent of black carbon) concentration and other air pollutants in order to define approximate level of eBC in more efficient approach. The study was conducted in Wrocław (Poland) in October 2021, and combined data on eBC concentration (measured by microaethalometer), air quality (from national environmental monitoring system) and traffic (from municipal traffic management system). Quantile regression was used to assess the relationship between the concentrations of pollutants. The obtained results show that for rise 1 mg∙m<sup>–3</sup> of carbon monoxide, eBC concentration rise between 4.2 and 8.0 μg∙m<sup>–3</sup>, depending on the period of a day. Precision of eBC concentration evaluation is influenced by sun light which results in higher precision of defining a scaling factor for night hours. Outcomes of this study constitute an added value to understanding of interconnections between different factors describing environmental conditions in cities and might be helpful for more effective environmental assessment of human habitats.



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Authors and Affiliations

Joanna A. Kamińska
1
ORCID: ORCID
Jan K. Kazak
2
ORCID: ORCID

  1. Wrocław University of Environmental and Life Sciences, Department of Applied Mathematics, Wrocław, Poland
  2. Wrocław University of Environmental and Life Sciences, Institute of Spatial Management, Grunwaldzka 53, 50-357, Wrocław, Poland
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Abstract

The Nile River is the main route for inland navigation in Egypt. The vessels navigating through inland waterways generate complex physical forces that need to be studied extensively. Quantifying the effects of vessels sailing along a waterway is a complex problem because the river flow is unsteady and the river bathymetry is irregular. This paper aims to investigate the hydrodynamic effects resulting from the movement of vessels such as return currents around the vessel, the draw down of the water surface, under keel clearance, and the shear stress induced by vessels operating in the Nile River. Modeling such effects has been performed by applied the two-dimensional ADH (adaptive hydraulics) model to a river reach for different navigation channel operation scenarios. The obtained results show that the draw down heights, the water fluctuation, and the shear stress magnitude are larger when the river cross sectionals are narrow and the shallow water depths. These river sections are considered more disposed to bed erosion and it is morphologically unsafe.
The section having the narrowest width and the lowest depth was associated with the largest drawdown percentages of 98.3% and 87.3% in one-way and two-way scenarios. While the section having the widest width and the largest depth was associated with the least drawdown percentages of 48.5% and 51.9% in one-way and two-way scenarios.
The section having the narrowest width and the lowest depth was associated with the largest fluctuations of 22.0 cm and 41.9 cm in one-way and two-way scenarios. While the section having the widest width and the largest depth was associated with the least fluctuations of 0.6 cm and 1.8 cm in one-way and two-way scenarios.
The section having the narrowest width and the lowest depth was the worst section for under keel clearance of 5.0 cm and 33.3 cm in one-way and two-way scenarios. While the section having the widest width and the largest depth was the best section, where its clearance values were 183.2 cm and 155.0 cm in one-way and two-way scenarios.
It is concluded that a numerical model is a valuable tool for predicting and quantifying the hydrodynamic effects of vessels moving through a two-dimensional flow field and can be used to evaluate different scenarios that are difficult to measure in the field or a physical model. Also, it provides visualization products that help us understand the complicated forces produced by vessels moving in a navigation channel.
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Bibliography

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Authors and Affiliations

Neveen Abdel-Mageed Badawy
1
Alaa Nabil El-Hazek
1
ORCID: ORCID
Hossam Mohamed Elsersawy
2
ORCID: ORCID
Ebtesam Rezk Mohammed
2

  1. Benha University, Faculty of Engineering at Shoubra, Department of Civil Engineering, Cairo, Egypt
  2. National Water Research Center, Nile Research Institute, Fum Ismailiya Canal, P.O. Box 74, Shoubra El-Kheima, 13411, Egypt
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Abstract

A computer model EUSS (Emission Uniformity on Sloping Surfaces) has been developed to design and evaluate the system capacity under operating conditions for drip irrigation system. And achieve the desired value of emission uniformity that is not significantly different according to the recommended values by applying it in field experiment located at Al- -Slahia city, Egypt. The model has the ability to design the system by all of the common design techniques and have ability to customize any of them.

EUSS model includes two main parts: crop water requirements, and hydraulic calculations of the system using metric unit system. It developed in graphical user interface of the programming language C-sharp (C#) by using Microsoft Visual Studio. The model database is containing the equations, tables and reference values to get more rapid and accurate results, and gives the opportunity for selecting some parameters such as: soil properties, characteristics of the corresponding crop, and climatic data. EUSS model allows the user to assume or set definite values, for example plot layout, land slopes and topography, the emitter characteristics and operating conditions.

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Authors and Affiliations

Wafaa Abo Zied
1
ORCID: ORCID
Mohammed Hanafy
1
Ehab Mostafa
1
ORCID: ORCID
Ahmed Abo Habssa
2

  1. Cairo University, Faculty of Agriculture, Agricultural Engineering Department, Gamaa Street 1, Giza, 12613, Egypt
  2. Helwan University, Mataria Faculty of Engineering, Mechanical Power Department, Helwan, Egypt
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Abstract

This article focuses on a Samarian coin issue that portrays a biga carrying people clad in Iranian apparel on the obverse and an Iranian horseman on the reverse. It was struck in the name of BDYHBL and the forerunners of the type can be traced to Sidonian coinage and Achaemenid-infl uenced minor arts. It is possible that the issuer of the coin held a military or an administrative post in the Achaemenid realm, which could explain why this and other issues bearing his name contained motifs drawn from its iconography.

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Authors and Affiliations

Jarosław Bodzek
ORCID: ORCID
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Abstract

The study’s objective was to assess the efficacy and to identify the toxic mechanisms of action of some plant-derived monoterpenes and yucca extract as alternatives to chemical insecticides against the red flour beetle, Tribolium castaneum. Carvone, 1,8-cineole, cuminaldehyde, and linalool, as well as Yucca schidgera extract, were the control agents whose efficacy against the red flour beetle was tested in the laboratory and compared to malathion. The criteria for evaluating efficacy were the effects of the tested compounds on adult mortality and red flour beetle progeny. Furthermore, the effects of the control agents on some enzymes (Acetylcholinesterase, ά-amylase, and alkaline phosphatase) in T. castaneum were investigated. Moreover, the effect of the tested control measures on weight loss of treated wheat grain was studied. The tested substances showed a high ability to control T. castaneum with regard to adult mortality and offspring production, especially when used as fumigants. For adult mortality, malathion showed the highest potential against T. castaneum as a fumigant, followed by carvone, yucca extract, cuminaldehyde, linalool, and 1,8-cineole with LC 50 values of 0.05, 331.5, 365.1, 372.2, 460, and 467.5 mg · 1000 cm –2 after 72 hours, respectively. The highest reduction in progeny was for malathion followed by carvone, linalool, cineole, yucca extract, and cuminaldehyde with reduction percentages of 100, 90, 89.3,79.4 and 65.8%, respectively. The tested compounds significantly affected acetylcholinesterase activity, alpha-amylase activity, and alkaline phosphatase in the red flour beetle. There was no significant reduction in the weight of wheat grains treated with the tested materials compared to the untreated healthy grains. Finally, the tested compounds as fumigants, especially 1,8-cineole, can be considered as effective alternatives to control the red flour beetle.
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Authors and Affiliations

Aly Derbalah
1
Attiah Keratum
1
Mohamed Darwesh
1
Ahmed Fayez Omar
2
Ahmed Salama
1
Fatma Hegazy
3

  1. Pesticides Chemistry and Toxicology Department, Faculty of Agriculture, Kafrelsheikh University, Kafrelsheikh, Egypt
  2. Department of Stored Products Pests Research, Sakha Station, Plant Protection Research Institute, Agricultural Research Centre,Giza, Egypt
  3. Plant Protection Department, Faculty of Agriculture, Tanta University, Tanta, Egypt
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Abstract

Strengthening the functioning of existing rural piped water supply systems is a critical strategy for ensuring household water security, particularly in water-scarce contexts. Improving operation and maintenance (O&M) of the systems is an important area of focus, commonly plagued by poor reliability and functionality over time. From an economic perspective, there is an opportunity to optimise O&M input efficiencies as a foundation for improved management. This paper presented challenges and opportunities to optimise O&M input efficiencies based on an analysis of water supply systems in Vietnam’s highland areas characterised by mountainous terrain and water scarcity. The analysis focused on state-based agencies for O&M given their mandate for restoring the inefficient systems and identified input norms for guidance on how to optimise O&M activities. We applied an input-oriented data envelopment analysis (DEA) model under constant returns to scale assumption to estimate technical, economic and allocative efficiencies. The results identified efficiency levels of 90%, 30% and 33% respectively. The study suggests a 10% reduction in general input amounts and identified efficient input target values reveal potential reduction rates for technical labour (12%), electricity (12%), as well as the technical and economic norms of technical labour (0.86 person- day∙(100 m3)–1 water sold) and electricity (0.53 kWh∙m–3 water sold). The policy implications for O&M state-based agencies include the adoption of input-based contracting mechanisms, while the government is encouraged to approve water tariffs and provide compensation based on input items to promote water service supply as a public good in water- scarce and challenging areas.
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Authors and Affiliations

Dao Van Dinh
1
ORCID: ORCID
Phong Tung Nguyen
2
ORCID: ORCID
Tan Tiep Nguyen
3
ORCID: ORCID
Naomi Carrard
4
ORCID: ORCID
Ngoc Minh Nguyen
5
ORCID: ORCID
Ton Nu Hai Au
6
ORCID: ORCID

  1. Institute for Water Resources Economics and Management, No 131, Chua Boc, 10000, Dong Da, Hanoi, Vietnam
  2. Ministry of Agriculture and Rural Development, Department of Water Resources, No 2, Ngoc Ha, 10000, Ba Dinh, Hanoi, Vietnam
  3. Vietnam Academy of Water Resources, No 17, Tay Son, Dong Da, 10000, Hanoi, Vietnam
  4. University of Technology Sydney-Institute for Sustainable Futures, Broadway 15-73, Ultimo, 2007, Sydney, Australia
  5. Hanoi Architectural University, km 10, Nguyen Trai, Thanh Xuan, 10000, Hanoi, Vietnam
  6. University of Economics, Hue University, 99 Ho Dac Di, 49000, Hue City, Vietnam
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Abstract

Transparent Al doped ZnO nanocrystalline films with a crystallite size less than 19 nm are obtained by spray pyrolysis. Band gap increases monotonically from 3.16 to 3.31 eV with increasing aluminum dopant up to 1.56 at.% facilitating increasing width of a transmission window in addition to the band gap tuning of 4.74% which compares favorably well with literature. UV emission with continuously increasing intensity is obtained which reflects on the good crystalline quality of the films. Also the defect emissions are suppressed remarkably as the dopant Al concentration increases in ZnO. The band gap tuning by quite small increment in dopant amount makes the present films, much attractive for the fabrication of light emitting devices with a much sought-for benefit of large area fabrication. FESEM shows the surface is granular with grain size lying in the range of 20–35 nm and EDX confirms the presence of Al in the doped samples.

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Authors and Affiliations

N. Kumar
A. Srivastava

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