bluuebunny/crossref_metadata_2025_split huggingface dataset:
Impact of Climate Change on Irrigated Agriculture in steppe Zones of Uzbekistan
Authors: Salokhiddiov A , Khakimova P , Ismailov M , Razzakov R , Mirzaqobulov J 
Published: July 2020

Abstract
The study has been conducted in the newly developed by lift irrigation areas of Karshi steppe (Uzbekistan). The research questions included an assessment of the climate change impact on agricultural production. The studies allowed to examine main factors affecting the behavior of agricultural producers in the face of climate change, as well as their current practices and skills for adapting to the effects of climate change. As research results show, the impact of climate change on irrigated agriculture in the study areas has become especially tangible over the last decade. In this regard, situations arise with crop losses and reduced quality of agricultural products. According to research outcomes the agricultural producers have general information and general knowledge about climate change and its impact on agriculture. The most important consequences caused by the climate change impact on irrigated agricultural production include - increasing in water scarcity, growing in numbers of agricultural pests and plant diseases, declining in crop yields, instability and unpleasant weather surprises, the need to spend more labor and resources to get a satisfactory crop yield, salinization of land and water resources contamination, increase in the frequency and intensity of extreme weather events such as droughts and frosts, and others.
Water-saving irrigation technologies for cotton in the conditions of global climate change and lack of water resources
Authors: Khamidov M , Khamraev K 
Published: July 2020

Abstract
The article presents the results of the experiments on the study of irrigation technologies of cotton in the conditions of grassy-alluvial, saline, and medium loam soil of the Bukhara oasis by lying black film on cotton furrows and using polymer complexes. In field experiments, irrigation technology was carried out by using the irrigation received moisture content of the soil recommended for grassy-alluvial, saline, and medium loam soil of the Bukhara oasis at 70-80-65% compared to LSMC. When the cotton was irrigated 4 times according to the scheme 1-3-0 with irrigation norms of 767, 604, 622, 644 cbm/ha and seasonal irrigation rate of 2637 cbm/ha by covering furrows with the black film and 1818 cbm/ha compared to the control option, the river water was economized and the yield was higher which was 46.8 h/ha. Even when irrigated by using polymer complexes, cotton was irrigated 4 times according to scheme 1-3-0 with irrigation norms of 779, 616, 650, 667 cbm/ha and seasonal irrigation rate of 2712 cbm/ha by using polymer complexes and in this regard, 1743 cbm/ha of the river water as compared to the control option was saved while the yield was 44.8 h/ha. Increased cotton yield by 3.0-5.0 h/ha and saving river water by up to 30-40% was achieved through the irrigation technology by using the screen, which was created by covering the black film and polymer complexes.
Investigating the advantages of sub-surface irrigation method in winter wheat productivity
Authors: Isaev S , Begmatov I , Goziev G , Khasanov S 
Published: July 2020

Abstract
Studies have found that the sub-surface method of winter wheat irrigation halves the number of irrigations and reduces the crop water consumption by 970-1015 m3, inter-row treatment procedures, and the consumption of fuels and lubricants. The productivity of winter wheat grain in comparison with the control (without sub-surface irrigation) is increased by 0.9 t/ha, environmental pollution from agrochemicals is prevented. The sub-surface irrigation method in conditions of meadow soils with a groundwater level of 1-3 m and mineralization of 1-3 g/l experimented in this paper and the influence of this method on the development dynamics of winter wheat (Polovchanka) on obtaining high yields was also tested. The number of irrigations increased to 6-7 times instead of 3-4. Therefore, on such lands, we recommend while designing the drainage system, the designers should plan the depth of the drains no more than 1.5 meters. Sub-surface irrigation is a temporary closure of closed drainage during the growing season of winter wheat, leading to an increase in groundwater level (80-130 cm), thereby leading to an increase in the moisture reserve in the soil.
Ecohydrology of the Syrdarya River under irrigation water management in the Fergana Valley
Authors: Kenjabaev S , Arifjanov A , Frede H , Apakhodjaeva T 
Published: July 2020

Abstract
Sustainable and efficient water resources management is important for the irrigation dominated agricultural system and therefore for the rural population and the environment of the arid regions. The objective of this study is to provide an overview of ecohydrology and irrigation water management in the region and to lay down some opportunities for cooperation at the transboundary level with the aim of increasing water productivity and environmental sustainability. Based on extensive literature review and analysis of secondary data from different organizations, we found that water management in the region’s agriculture faces increasing challenges that are accumulated over time. It is hoped that conclusions from this study will help set the stage for productive discussions and to identify research needs in the region.
Thermodynamic bases of mechanical working of metals by cutting
Authors: Toshmatov E , Akhmedov A , Ibragimova Z 
Published: July 2020

Abstract
Thermo-mechanical phenomena that occur during the metals cutting in a cylindrical form are difficult in terms of systematic and interconnected mathematical description for a three-dimensional deformable body. In this connection, empirical formulas of the cutter interaction with the processed surface of metal products are used in calculations. In this paper, we propose the most general approach for modeling the process of metalworking by thermodynamically nonlinear strain. Using the non-classical theory of deformation, the three-dimensional problem of metalworking by cutting is reduced to a two-dimensional one. The proposed approach made it possible to compose resolving equations and boundary conditions for the problem under consideration, taking into account heat release and wear on contact sur faces with a cutting tool.
Economic load intervals for selecting 10 kV cable cross-sections for agricultural consumers
Authors: Taslimov A , Rakhimov F , Nematov L , Markaev N , Bijanov A , Yunusov R 
Published: July 2020

Abstract
District electric networks for agricultural purposes are characterized by a constant increase in loads. In these conditions, it is important to choose the correct parameters of power lines and, first of all, the cross-sections of overhead lines (overhead lines) and cable lines. There are technical possibilities to increase the capacity of overhead power lines, which can be carried out in the following ways: voltage regulation; reactive power compensation; replacement of existing wires with wires of a larger cross-section; load unbundling; transfer of the network to an increased voltage. Increasing the capacity of cable transmission lines by all of these methods is not possible due to their design features. Thus, due to the difficulties of increasing the capacity of cable lines and dynamically developing networks, the problem of choosing the optimal cable cross-section for lines with an ever-increasing load is becoming more acute. Currently, agricultural distribution electric networks have a constant increase in load. In these conditions, the correct choice of the parameters of cable lines and the residential cable line is of great importance. Due to the complexity of increasing the throughput of cable lines and dynamic networks, problems arise with the choice of optimal paths for wires and residential cables for agricultural lines.
Results theoretical study of the form ofa front surface of a chisel-cultivator stand
Authors: Nasritdinova U , Khahkberdiyev B 
Published: July 2020

Abstract
In this article was revised theoretical research forms of stand on agro-energetical indicators of chisel cultivator’s work. For the exception of clogging up of stands with plant remainders, it is important to change their configuration so that the opportunity to stand self-cleaning from plant remainders during the work itself would appear. To find optimal forms of the cross cut there was studied different existing and experimental forms of stand frontal covers. The conducted researches show that asymmetrical frontal cover of stand better cleans from litter, and notably decreases the traction resistance of the soil.
Detritus removal from a pumping-plant intake chamber with hydrajet pumps
Authors: Muhammadiev M , Urishev B , Juraev S , Boliev A 
Published: July 2020

Abstract
Issues of excessive sedimentation of sediment in the pre-chambers of reclamation pumping stations are important in ensuring their reliable operation. Examinations have established that excessive detritus deposition in the intake part of the chamber complicates the water intake by pumps, increases energy consumption. For the timely cleaning of the intake chamber from detritus, a new device, equipped with a hydrajet pump fed from the pressure pipe of the main pump of the station is proposed. An equation for the pressure-flow characteristics of a water-jet pump used to drain the hydraulic mixture (water + solid mass) based on the of E.A. Sokolov and N.M. Singer methodology and the parameters of the hydrajet pump at given pressure values and the planned value of the flow rate of the solid mass have been obtained. The optimal values of the relative head h = 0.19 and the relative flow q = 0.6. At these values, the efficiency of the installation will be maximum. The results of the experiments carried out according to the estimation design have shown their satisfactory convergence with the calculated data and made possible to determine the optimal pressure and flow parameters of the hydrajet pump from the maximum efficiency.
Contactless galvano-magnetics transducers of monitoring and control systems in agricultural energy
Authors: Plakhtiev A , Denmuhammadiev A , Gaziev G 
Published: July 2020

Abstract
The paper provides information on the state of the use of direct current energy in the electric power industry of agriculture and water resource, hydraulic engineering, industry and metallurgy, irrigation, and land reclamation. Identified the need for contactless non-destructive testing of large constant currents in high-power electrical installations in irrigation, land reclamation, and hydraulic engineering. The basic requirements for contactless transducers and meters of large direct currents in circuits without breaking them are shown. Identified priority areas in the development of these transducers. The general principles of constructing contactless ferromagnetic transducers of large direct currents also the basic requirements for them and the results of the development of one of the options for the development of effective innovative galvano-magnetic contactless transducers of large direct currents with an expanded range of monitoring and control systems for powerful pumping stations in water supply and land reclamation are presented. To increase the sensitivity of galvanomagnetic contactless transducers of large direct currents, Hall transducers have supplied with short-term rectangular current pulses from a special generator. When measuring the amplitude values of the rectified current, in this case of galvanomagnetic contactless transducers, the supply of pulses of the control current of the Hall transducers with the converted current in the bus synchronization is provided. This is achieved by supplying galvano-magnetic contactless transducers of large direct currents with a magnetically controlled contact located near the bus with the converted current and included in the circuit of the current electrodes of the Hall transducers.
A static characteristic of the developed galvano-magnetic contactless transducer of high currents obtained and its main technical characteristics and parameters are given. It is shown that the developed transducer, unlike the known ones, has increased accuracy and sensitivity, a technological design, and low weight and dimensions at low material consumption and cost. It can be widely used in electrical systems in land reclamation and irrigation, in water supply, industry, rail transport, science, technology, and for checking electric meters at the installation site.
Mechanisms of electrical energy management on different tariffs of industrial enterprises
Authors: Muratov Kh , Kodirov K , Kodirov D 
Published: July 2020

Abstract
This article addresses the issues of monitoring energy consumption modes to reduce production costs when tariffs that divide consumers’ electricity bills by day, weekdays, and seasons. Taking into account the aforementioned issue, the proper use of time-differentiated tariffs has led to some changes in the operating mechanisms of industrial enterprises to monitor their operating modes.
Algorithm for power systems mode optimization taking into account the frequency change in terms of probablistic nature of initial information
Authors: Gayibov T , Latipov Sh , Abdurashidov D , Pulatov B , Davirov A 
Published: July 2020

Abstract
The task of power systems mode optimization relates to the complex tasks of non-linear mathematical programming. Despite the development over the past few decades many methods and algorithms for solving this problem, questions of their improvement taking into account the current operating conditions of energy systems remain an important task. This article proposes a new algorithm for the optimization of short-term modes of power systems, taking into account frequency changes in terms of the probabilistic nature of initial information. A distinctive feature of the algorithm is associated with the elimination of the need to choose the single slack bus with balancing power plant in calculations, which is typical for many existing methods. It is shown that taking into account frequency change in the optimization of power system mode in terms of probabilistic nature of initial information can introduce significant changes in the calculation results and lead to a corresponding increase in the resulting economic effect.
Comparison of the reinforcing concrete structures performance of hydraulic structures with carbon fiber composite material
Authors: Maksudov I , Maksudova L , Abdukhalilov A , Bozorov A , Mirzaliev R 
Published: July 2020

Abstract
Today, in the construction field, high-strength textile materials are increasingly practiced with the external reinforcement of structural elements. For the manufacture of textile externally reinforcing materials, they are mainly used: fiberglass, basalt, carbon fiber, and other high-strength fibers and threads. In combination with an epoxy or polyester matrix, they form an unconventional building material - carbon fiber. Carbon fiber - in comparison with conventional building materials, it has a number of indisputable advantages, such as high tensile strength, low specific gravity, high ability to resist corrosion. Carbon fiber is currently listed as the most promising material used in construction. However, its use is often limited by high prices for reinforcing material, because of this, the use of such material in the designs of large structures is economically irrational. The conclusion is made that it is necessary to determine the best reinforcement method in which the least amount of material is spent without loss of quality.
Biomechanical Evaluation of Insole for Badminton Players: A Preliminary Study
Authors: Rashid Amir Mustakim Ab , Kadir Mohammed Rafiq Abdul , Ramlee Muhammad Hanif 
Published: July 2020

Abstract
Study in sports biomechanics is a demand field for any athletes due to the fact that it can contribute a lot for the improvement of sports performance. One of them is a study on badminton games where the athletes are normally perform many movements with a combination of usage of sport shoes and insoles. It should be noted that analysis on the badminton games and insoles are very limited in the literature. Therefore, this paper is presenting an art of development process of three-dimensional model of bone and insole in order to simulate the condition of badminton games via finite element method. Computed tomography images were used to reconstruct the bones using Mimics software whereas insole was developed using Gensole®. The bones were reconstructed by setting a Hounsfield Unit (226 to 3071) to differentiate the cortical bone. Anthropometric procedure was firstly used to develop the insole of Slazenger. For the preliminary analysis, the models were used to simulate the landing phase of the badminton player where the inferior part of the insole were lifted at 2° with a total of 2.57 times of body weight was applied from the bottom of insole. From the results, it is shown that the von Misses stress were observed at the contact point between bones and insole. From the preliminary results, the stress distribution on the insole is higher at certain points, might due to a larger contacted part. Nevertheless, a detail of foot and ankle joint should be developed in the future to mimic the real condition of the landing phase of athletes.
Automated badminton smash recognition using convolutional neural network on the vision based data
Authors: Rahmad N A , As’ari M A , Soeed K , Zulkapri I 
Published: July 2020

Abstract
Sport performance analysis in sports practice cannot be separable. It is important to help coach analyse and improve the performance of their athletes through training or game session. Due to the advancement of technology nowadays, the notational analysis of the video content using various software packages has become possible. Unluckily, the coach needs to recognize the actions manually before doing further analysis. The purpose of this study is to formulate an automated system for badminton smash recognition on widely available broadcasted videos using pre-trained Convolutional Neural Network (CNN) method. Smash and other badminton actions such as clear, drop, lift and net from the video were used to formulate the CNN models. Therefore, two experiments were conducted in this study. The first experiment is the study on the performance between four different existing pre-trained models which is AlexNet, GoogleNet, Vgg-16 Net and Vgg-19 Net in recognizing five actions. The results show that the pre-trained AlexNet model has the highest performance accuracy and fastest training period among the other models. The second experiment is the study on the performance of two different pre-trained models which is AlexNet and GoogleNet to recognize smash and non-smash action only. The results show that the pre-trained GoogleNet model produces the best performance in recognizing smash action. In conclusion, pre-trained AlexNet model is suitable to be used to automatically recognize the five badminton actions while GoogleNet model is excellent at recognizing smash action from the broadcasted video for further notational analysis.
Sustainable Supply of Hydrogen for Integrated Power Plant with Methanation via Pinch Analysis
Authors: Rudin S N F M , Muis Z Ab , Ramli A F , Shabri H A , Zailan R , Hashim H , Ho W S 
Published: July 2020

Abstract
The increment of greenhouse gaseous emission increases the needs to find the best solution to reduce emission of its gaseous. Carbon dioxide is the main contributor which comes mainly from energy sector. Capturing CO2 from power plant does not fully solves the issue hence integrating power plant with methanation was proposed. In this paper, a pinch analysis technique is introduced to solve the challenge to implement the integrated power plant with methanation. The main drawback of the system is to deliver a sustainable and optimize capacity of hydrogen for methanation of carbon dioxide. Cascade pinch analysis is done which has been adopted from ESCA to calculate optimal hydrogen supply and hydrogen storage. From the analysis, after five iteration, the hydrogen supply capacity is obtained which is 281.38 Wh. The hydrogen storage capacity can also be determined which is 1352.52 Wh. Through the case study presented, it has proven that pinch analysis provides a simple methodology to solve the optimization issue of hydrogen supply and demand for integrated power plant with methanation system.
Solubility of Swietenia Macrophylla Seeds In Supercritical Carbon Dioxide Extraction
Authors: Hilmi Mohammad Lokman Bin , Salleh Liza Md , Jamaludin Roslina , Norodin Nur Salsabila Md , Zaidel Dayang Norulfairuz Abang 
Published: July 2020

Abstract

Swietenia macrophylla seeds oil has been claimed to possess anti-diabetic, antioxidant and other health benefit properties which have garnered the interest from food and pharmaceutical industries. This study aimed to determine solubility data of S. macrophylla seeds oil in order to understand the behaviour of the separation process which is fundamental in the designing process. Solubility of S. macrophylla seeds oil in supercritical carbon dioxide (SC-CO2) was determined by using dynamic method at 20-30 MPa and 40-60°C at fixed CO2 flowrate, 2 mL/min. The solubility of S. macrophylla seeds oil obtained were 1.93 to 4.77 mg (g CO2)−1 and was increased with pressure and temperature. In this study, the Chrastil, Adachi-Lu, del Valle-Aguilera, Gordillo and Sparks as semi-empirical models were tested to fit the experimental data. The Sparks model showed the best-fitted model for S. macrophylla seeds oil solubility data with an average absolute relative deviation (AARD) of 7.76% and a high coefficient of determination (R2) of 0.992. It can be concluded that the semi-empirical model give good correlation between observed value and predicted value.
Two-Stages Carbon Emission Pinch Analysis for Integrated System of Renewable Energy and Electric Vehicle
Authors: Ramli Ahmad F. , Idris Ahmad M. , Muis Zarina Ab. , Ho Wai S. , Sadikin Aziatul N. , Ahmad Syaza I. 
Published: July 2020

Abstract
The introduction of electric vehicles to the transportation fleet has merged the power generation and transportation sectors into an integrated system. Rather than fuel sources, electricity is used to charge electric vehicles, so these vehicles play a vital role as an important green technology that could reduce carbon emissions in the transportation sector. This study aimed to develop a multi-stage carbon emission pinch analysis for an integrated system to optimise the energy mix for electricity generation. In the first stage, the minimum number of electric vehicles required to reduce transportation emissions was determined. In the second stage, the optimal energy mix for power generation sector was determined while including the electricity demand for the electric vehicle. Four scenarios, namely the business-as-usual scenario (S1); the public transport utilization scenario (S2); the electrification of vehicle scenario (S3); and the Integrated-Policies scenario (S4) were developed based on Peninsular Malaysia as a case study, to analyse the impact of different mitigation strategies on the country’s economy. S1 was set as baseline for all the cases i.e., without any mitigation strategies. The results reveal that S4 was the best scenario, yielding a total cost saving percentage of 51.42 % compared to S1. For the power generation sector, 52 % of renewable energy (solar PV, biomass and biogas) utilisation would be needed in the energy mix to achieve the emission reduction target.