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Analysis of institutional authors

Rodriguez Sinobas, LeonorAuthorSanchez, RaulAuthor

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June 9, 2019
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Prototype emitter for use in subsurface drip irrigation: Manufacturing, hydraulic evaluation and experimental analyses

Publicated to: BIOSYSTEMS ENGINEERING. 128 41-51 - 2014-12-01 128(), DOI: 10.1016/j.biosystemseng.2014.09.011

Authors:

Souza, WD; Sinobas, LR; Sánchez, R; Botrel, TA; Coelho, RD
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Affiliations

Fed Univ West Bahia, Ctr Sci & Technol, BR-47808021 Barreiras, Bahia, Brazil - Author
Univ Politecn Madrid, Res Grp Hydraul Irrigat, E-28040 Madrid, Spain - Author
Univ Sao Paulo, Dept Biosyst Engn, BR-13418900 Sao Paulo, Brazil - Author
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Abstract

The current research aims to analyse theoretically and evaluate a self-manufactured simple design for subsurface drip irrigation (SDI) emitter to avoid root and soil intrusion. It was composed of three concentric cylindrical elements: an elastic silicone membrane; a polyethylene tube with two holes drilled on its wall for water discharge; and a vinyl polychloride protector system to wrap the other elements. The discharge of the emitter depends on the change in the membrane diameter when it is deformed by the water pressure. The study of the operation of this emitter is a new approach that considers mechanical and hydraulic principles. Thus, the estimation on the membrane deformation was based on classical mechanical stress theories in composite cylinders. The hydraulic principles considered the solid deformation due to force based on water pressure and the general Darcy Weisbach head-loss equation. Twenty emitter units, with the selected design, were handcrafted in a lathe and were used in this study. The measured pressure/ discharge relationship for the emitters showed good agreement with that calculated by the theoretical approach. The variation coefficient of the handcrafted emitters was high compared to commercial emitters. Results from field evaluations showed variable values for the relative flow variation, water emission uniformity and relative flow rate coefficients, but no emitter was obstructed. Therefore, the current emitter design could be suitable for SDI following further studies to develop a final prototype. (C) 2014 IAgrE. Published by Elsevier Ltd. All rights reserved.
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Keywords

Emitter designRoot intrusionSubsurface drip irrigation

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal BIOSYSTEMS ENGINEERING due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2014, it was in position 4/12, thus managing to position itself as a Q1 (Primer Cuartil), in the category Agricultural Engineering.

From a relative perspective, and based on the normalized impact indicator calculated from World Citations from Scopus Elsevier, it yields a value for the Field-Weighted Citation Impact from the Scopus agency: 1.13, which indicates that, compared to works in the same discipline and in the same year of publication, it ranks as a work cited above average. (source consulted: ESI Nov 13, 2025)

Specifically, and according to different indexing agencies, this work has accumulated citations as of 2026-04-25, the following number of citations:

  • WoS: 21
  • Scopus: 27
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-25:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 43 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://oa.upm.es/36217/

As a result of the publication of the work in the institutional repository, statistical usage data has been obtained that reflects its impact. In terms of dissemination, we can state that, as of

  • Views: 552
  • Downloads: 487
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Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Brazil.

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Awards linked to the item

The authors would like to thank: the University of Sao Paulo, Department of Biosystems Engineering and Sao Paulo State Research Foundation for funding this study; the personnel of the Hydraulic for Irrigation research group (Technical University of Madrid) for their valuable contribution for the analysis on the emitter prototype. Finally, the Spanish Ministry of Science and Technology (CICYT) for its support provided through project N. AGL2008-00153/AGR.
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