scholarly journals Improvement of intra-soil and drip irrigation of agricultural crops

Author(s):  
V.I. Kremenskoy ◽  
◽  
A.M. Dzhaparova ◽  

The work is devoted to the development and improvement of subsurface and drip irrigation systems for agricultural crops in the Crimea. The analysis of the stages of micro-irrigation development is carried out. In our research, we used general scientific methods for collecting and systemizing information on irrigation systems. The efficiency and reliability of the operation of individual units of subsurface and drip irrigation systems have been revealed. The main directions of improvement of micro-irrigation systems were determined.

Author(s):  
K.V. Ramana Rao ◽  
Suchi Gangwar ◽  
Arpna Bajpai ◽  
Ravish Keshri ◽  
Lavesh Chourasia ◽  
...  

The field experiment was conducted at Precision Farming Development Centre, Central Institute of Agricultural Engineering, Bhopal on influence of different irrigation methods in three continuous years (2010-2013) on the performance pea crop. Conventional flood irrigation, micro sprinkler and drip irrigation systems were adopted as three treatments and with seven replications in each treatment in the study. Pea (Arkel variety) crop was sown at a spacing of 45 X 10 cm. During the period of experiment flood irrigation were applied on weekly basis and micro irrigation and drip irrigation systems were operated every third day to meet the crop water requirement. The total quantity of water applied in flood, drip irrigation and micro sprinkler systems were 387.5, 244.7 and 273.5 mm respectively. Maximum crop yield was observed under micro sprinkler system (98.60 q/ha) followed by drip and conventional irrigation system. Saving of water was found better under drip irrigation over micro sprinkler irrigation system.


Author(s):  
Alison Greenlee ◽  
Timothy Murray ◽  
Victor Lesniewski ◽  
Mark Jeunnette ◽  
Amos G. Winter

The cylindrical filters presently used in <1000 m2 drip irrigation systems are frequently clogged, increasing pressure loss and lowering the flow rate through the filters. This work investigates the mechanisms for this clogging and proposes an alternative filtration design that would enable both more reliable and lower maintenance filtering. This proposed system is compatible with existing drip irrigation systems and could be made inexpensively with plastic bottle manufacturing equipment. To compare the proposed design to off-the-shelf options, a drip irrigation test setup was built to measure the pressure loss across different filters as particles accumulated. These experiments confirmed that pleated cartridge filters, with high effective surface area, incurred lower pressure losses than cylindrical filters. These tests revealed that the greatest reason for clogged performance was that filtered particles (not the cartridge filter itself) eventually restricted the flow of water through the system. This inspired the redesign of the filter housing such that the housing extended far below the filter, providing a catch basin away from the filter for the particles to settle. Fixing the filter independently of the bottom casing significantly improved the overall performance of the filtration system, reduced the maintenance requirement necessary from the user, and would enable inexpensive manufacturing via blow molding. This paper experimentally demonstrates that the cartridge filter inside the redesigned housing can filter out over 2 kg of sand while maintaining less than a .03 bar pressure drop across the filter at a flow rate of 25 l/s.


EDIS ◽  
2019 ◽  
Vol 2019 (5) ◽  
pp. 3
Author(s):  
Ramdas Kanissery ◽  
Biwek Gairhe ◽  
Brent Sellers ◽  
Steve Futch

In Florida, clustered pellitory is becoming a troublesome weed for citrus, especially from the winter through early summer. Inadequate management of this weed can result in its heavy infestation in tree rows and can interrupt the spray pattern of low-volume drip irrigation systems. This new 3-page publication of the UF/IFAS Horticultural Sciences Department will assist Florida citrus growers with proper identification of clustered pellitory and with adoption of adequate and timely strategies to manage this weed in their groves. Written by Ramdas Kanissery, Biwek Gairhe, Brent Sellers, and Steve Futch. https://edis.ifas.ufl.edu/hs1341


Author(s):  
T. Sashchuk

<div><em>The article presents the results of the study of the communicative competence of the politicians on the basis of the analysis of their messages on their official pages of the Facebook social network. The research used the following general scientific methods: descriptive and comparative, as well as analysis, synthesis and generalization. The quantitative content analysis method with qualitative elements was used to distinguish the peculiarities of information messages that provide communication of the deputies of Verkhovna Rada (Ukrainian Parliament) on their official Facebook pages. Information messages have been analyzed by the following three criteria: subject matter, structure and language.</em></div><p> </p><p><em>For the first time the article draws a parallel between communicative competence and the ability to communicate with voters on the official pages of Facebook which is the most popular social network in Ukraine. As it is established, communicative competence in the analyzed cases is caused not by education, but by previous professional activity of a politician. The most successful and high-quality communication was from the current parliamentarian who worked as a journalist in the past. More than half of the messages that provided successful communication consisted of sufficiently structured short text and a video. The topic covers the activity of the parliamentarian in the Verkhovna Rada and in his district. More than half of the messages are spoken in the first person.</em></p><p><em>The findings of the study can be used in teaching such subjects as Political PR and Electronic PR, and may be of interest to politicians and their assistants.</em><em></em></p><p><strong><em>Key words:</em></strong><em> competence and competency, communicative competence, political discourse, official page of the deputy of Verkhovna Rada of Ukraine on the Facebook social network, subject matter and structure of the information message, first-person narrative, correspondence of communication to the level of communicative competence.</em></p>


2020 ◽  
Vol 10 (3) ◽  
pp. 177-180
Author(s):  
VERA SHUNYAEVA ◽  

The article is devoted to the research of the youth criminal subculture and its impact on the personality of under-aged. In the course of analysis of this negative impact, a definition of the criminal subculture of under-aged was proposed. The main principles of such a criminal subculture as AUE (the acronym, transcribed from Russian: АУЕ or А.У.Е., comes from «Арестантский уклад един» / “Prisoners Unity (Solidarity)” are defined. The reasons contributing to the development of this negative phenomenon and the typical fea- tures of a minor sharing the ideology of the AUE were identified. The methods for counteracting the AUE were proposed. The method- ological basis of the research is formed by general scientific methods: dialectical, system research method, analysis, synthesis, induction, deduction, analogy, etc., as well as such private scientific methods as comparative legal, formal legal, structural and functional, statistical ones. The authors relied on the results of research by Russian and foreign legal scholars, sociologists, psychologists.


2020 ◽  
Vol 23 (12) ◽  
pp. 1356-1382
Author(s):  
E.V. Olomskaya ◽  
A.A. Aksent'ev

Subject. This article discusses the methodological features of Russian Accounting Standard (PBU) 18/02 Income Tax Accounting when using the balance method to account for deferred taxes. It considers whether the clarification of permanent tax differences is justified, and it analyzes in detail the features of accounting for temporary differences and offers a visual and descriptive method for determining and correlating them in accounts. Objectives. The article aims to justify the reason for linking permanent tax differences to such accounting categories as Income and Expenses. It also aims to develop a methodological toolkit that simplifies the perception of the balance method and demonstrates the procedure for determining temporary differences. Methods. For the study, we used the methods of analysis, synthesis, observation, comparison, and other general scientific methods. Results. The article justifies the clarification of permanent differences from the position of accounting categories. It offers an original approach that helps visually classify temporary differences. The formalization of the balance method helped identify the logic of its reflection in accounting statements. Conclusions and Relevance. To ensure that accounting is not distorted due to the impact of taxation, it is necessary to develop a unified conceptual framework, as well as develop existing methods and introduce new ones that do not contradict the public concept of interaction between accounting and tax accounting. The research results are intended for training, scientific and practical activities of specialists in the field of accounting and audit, as well as students studying under this program, in order to study the features of applying the balance method for accounting for deferred taxes.


2020 ◽  
Vol 16 (5) ◽  
pp. 905-919
Author(s):  
R.O. Voskanyan

Subject. The article addresses leader companies of the e-commerce market in terms of sales and capitalization, that make their financial statements publicly available. Objectives. The aim is to identify special aspects of capital structure management policies of the largest e-commerce players based on ratio analysis. Methods. The study employs general scientific methods of research. Results. The paper reveals the specifics of capital structure management of the global e-commerce market leaders. The leading companies prefer an aggressive approach to the formation of their capital structure, increasing the volume of borrowed capital in comparison with their equity. The management of companies tries to provide a moderate approach to capital structure management and debt servicing, demonstrating the ability to repay debts in a timely manner. Aggressive capital structure policy is conditioned by specific activities of e-commerce companies, requiring constant search for and attraction of additional financial resources for improving production processes by management. Conclusions. Key players have an aggressive capital structure policy. This feature is necessitated by the need to systematically attract additional financing to expand the business, increase sales volumes, capture and create new markets. E-commerce companies have to constantly improve technology, logistics processes, and render a good and excellent customer service.


2020 ◽  
Vol 26 (7) ◽  
pp. 1590-1609
Author(s):  
V.A. Rakhaev

Subject. The article addresses modernization of lending facilities under concession agreements. It is important for evaluating the terms of credit transactions, effectiveness of credit projects, and the concessionaire's ability to repay the loan. Objectives. The purpose is to review the current financing mechanism and underpin approaches to improving the credit facilities within concession agreements. Methods. The study rests on general scientific methods, like the systems and logical analysis and synthesis, principles of induction and deduction, financial calculation techniques. The analytical part employs the balance method, methods of financial coefficients and the method of technical and economic estimates. Results. I analyzed the financial structure and special characteristics of concession agreements, parameters of concessionaires’ activities; considered the types of risks inherent in bank lending under concession agreements, methods for their identification and mitigation; offered a mechanism of lending, including the structure of credit transactions, restrictions for the financial condition of concessionaires, additional requirements and penalties for their non-fulfillment. The findings can help banks define lending parameters for concession agreements. The provided recommendations may be useful for consideration by the authorities of the constituent entities of the Russian Federation. Conclusions. It is possible to reduce the risks of lending under concession contracts, if their terms and conditions are stable, and if the lost income of concessionaires is compensated in the event of early termination. Reasonable tariffs for works and services and increased revenue collection will promote this type of lending.


2020 ◽  
Vol 16 (4) ◽  
pp. 730-744
Author(s):  
V.I. Loktionov

Subject. The article reviews the way strategic threats to energy security influence the quality of people's life. Objectives. The study unfolds the theory of analyzing strategic threats to energy security by covering the matter of quality of people's life. Methods. To analyze the way strategic threats to energy security spread across cross-sectoral commodity and production chains and influences quality of people's living, I applied the factor analysis and general scientific methods of analysis and synthesis. Results. I suggest interpreting strategic threats to energy security as risks of people's quality of life due to a reduction in the volume of energy supply. I identified mechanisms reflecting how the fuel and energy complex and its development influence the quality of people's life. The article sets out the method to assess such quality-of-life risks arising from strategic threats to energy security. Conclusions and Relevance. In the current geopolitical situation, strategic threats to energy security cause long-standing adverse consequences for the quality of people's life. If strategic threats to energy security are further construed as risk of quality of people's life, this will facilitate the preparation and performance of a more effective governmental policy on energy, which will subsequently raise the economic well-being of people.


2020 ◽  
Vol 19 (4) ◽  
pp. 598-617 ◽  
Author(s):  
S.V. Ratner

Subject. The article considers the concept of circular economy, which has originated relatively recently in the academic literature, and is now increasingly recognized in many countries at the national level. In the European Union, the transition to circular economy is viewed as an opportunity to improve competitiveness of the European Union, protect businesses from resource shortages and fluctuating prices for raw materials and supplies, and a way to increase employment and innovation. Objectives. The aim of the study is to analyze the incentives developed by the European Commission for moving to circular economy, and to assess their effectiveness on the basis of statistical analysis. Methods. I employ general scientific methods of research. Results. The analysis of the EU Action Plan for the Circular Economy enabled to conclude that the results of the recent research in circular economy barriers, eco-innovation, technology and infrastructure were successfully integrated into the framework of this document. Understanding the root causes holding back the circular economy development and the balanced combination of economic and administrative incentives strengthened the Action Plan, and it contributed to the circular economy development in the EU. Conclusions. The measures to stimulate the development of the circular economy proposed in the European Action Plan can be viewed as a prototype for designing similar strategies in other countries, including Russia. Meanwhile, a more detailed analysis of barriers to the circular economy at the level of individual countries and regions is needed.


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