European Journal of Scientific Research

Volume 161 No 1
March, 2022

Effect of the Temperature of the Non-Solvent on the Morphology of the Polymeric Membrane

George Bibileishvili, Mzia Kezherashvili, Nana Gogesashvili, Liana Kuparadze, Liana Ebanoidze and Zaza Javashvili
Abstract:
The effect of the temperature of the non-solvent on the morphology, pore size, the frequency of its distribution and high productivity membranes obtained on the basis of Poly [N, N'-(1,3-phenylene) isophthalamide] (PMIA) and polyethylene glycol (PEG) by wet method of phase inversion has been studied.
As a result of the research it was found that at the process of the phase inversion by variation of the temperature of the non-solvent the regulation of its viscosity and of the diffusion coefficient of solvent-non-solvent alloying the prediction of the morphology and structure of the film. It was established that at high temperature of solving of the polymeric composition in the solution such distribution of particle size and polydispersion index is attained which causes obtaining of the membranes with high frequency of pore distribution and of high productivity. The structure and morphology of the membranes was studied by scanning probe microscope. The monitoring of the distribution of the particles size and concentration in the polymeric composition was carried out by the analyzer for determination of nanoparticles size, mass and z-potential.
Keywords: polymer membranes, coagulation temperature, microfiltration, polymeric composition, nanomaterials.


Provisions on the Rights to Copy, Distribute, and Communicate Works under the Law on Copyright in Vietnam and Orientation for Completing

Nguyen Thi Ngoc Tuyen
Abstract:
The article studies the legal provisions on copyright in Vietnam related to rights to copy, distribute and communicate works. They are considered essential and are commonly used in the economic rights of authors and copyright holders, especially e-books. It is allowed to copy, distribute, and communicate works as well as exceptions to enable other subjects to use these economic rights. This shows a huge change so that Vietnam can keep up with copyright protection in particular and build a legal foundation in line with the requirements of international integration in intellectual property in general. The authors used the method of document research to clarify the content of the historical formation and development of provisions on cases from 1945 when Vietnam had its first Constitution up to now. In addition, the author also analyzes and evaluates the existing limitations in the current Vietnamese legal provisions on the cases in which it is allowed to copy, distribute and communicate works; measures to handle infringements; at the same time, propose solutions to complete orientation.
Keywords: Copyright, copy, distribute, communicate, e-book, exceptions to copyright.


The Propensity to Adaptation under the New Era of Climate Changes

Ary José A. de Souza-Jr. and Flávio Terto
Abstract:
Decision utility or experienced utility: which one of them helps us better understand how it will occur the process to the adaptation of behavior’s consumer regarding the impact of climate change? This paper argues how each one of the aforementioned concepts most may affect the consumer’s routine as “decision-makers”, within the context that disturbances and scarcity must narrow their available options. For this, we use the individual’s choice reported in the 8th wave of European Social Survey, based on the choice-oriented perspective, which establishes a link between well-being and the propensity to adapt within this scenario. For this, an ordered logit model is applied upon environmental and socio-economic variables. In the end, our findings are consistent with a strong presence of rationality in the decision process towards adaptation.
Keywords: climate change, adaptation, decision, experienced, utility.
JEL Classification: Q50, Q53, Q54, D01, D60.


Growth of Two Cover Crops [Arachis repens (L.) and Desmodium adscendens (Sw.)] and Effect on Weediness in Industrial Banana Plantations in South-eastern Côte d’Ivoire

Edouard Yves Gilchrist Kouadio, Mamadou Cherif, Kra Frederic Kouame, Koffi Fernand Jean-Martial Kassi, Konan Didier Kouame, Brahima Camara, Kouabenan Abo and Acka Emmanuel Dick
Résumé:
En culture industrielle de bananier dessert, la lutte contre les adventices fait usage des herbicides chimiques nocifs pour la santé humaine et l’environnement. Dans la présente étude, l’introduction des plantes de couverture comme alternative a été envisagée dans les bananeraies au Sud-Est de la Côte d’Ivoire. Le dispositif expérimental était un bloc de Fisher à trois répétitions de trois traitements consistant en l’utilisation des espèces A. repens et D. adscendens ainsi que deux herbicides de synthèse constituant la troisième modalité de l’étude. Les paramètres de reprise, de croissance et de résilience qui ont été évalués, ont été meilleurs chez A. repens que chez D. adscendens. De surcroit, avec les plus faibles valeurs de densité et abondance-dominances d’adventices, A. repens a été plus efficace à contrôler l’enherbement que D. adscendens et les herbicides de synthèse. Ainsi, les résultats de l’étude suggèrent l’espèce A. repens comme plante de couverture dans la gestion des mauvaises herbes en bananeraie, en substitution des herbicides tels que le glyphosate et le glufosinate.
Mots-Clefs: Bananeraies, adventices, plantes de couverture, Côte d’Ivoire.

Abstract:
In industrial banana cultivation, the control of weeds use chemical weeders harmful to human health and environment. In this study, the introduction of cover crops was considered as an alternative in banana plantations in South-eastern Côte d’Ivoire. The experiment was designed in Fisher’s block with three replications of three treatments that include use of cover crop species A. repens and D. adscendens as well as two chemical weeders constituting the third modality of the experiment. Parameters assessed on the growth recovery, development and resilience were better to A. repens than D. adscendens. In addition, with the lowest values of weed density and abundance-dominance, A. repens was more efficient to control the weediness than D. adscendens and the chemical weeders. Thus, the results of this study suggest A. repens as a cover crop specie for weeds management in banana plantations, instead of herbicides such as the glyphosate and glufosinate. Keywords: Banana plantations, weeds, cover crops, Côte d’Ivoire
JEL Classification: Q01 Q10 Q15 Q16 Q56


Contribution de la Télédétection et d’un SIG à la Cartographie de la Dynamique Spatio-Temporelle des Zones Potentielles de Recharge des Nappes du District d’Abidjan (Sud-Est de la Côte Ivoire)

Djémin Édoukou Jacques, Anongba Braphond Vincent Rodrigue Benjamin, N’guessan Yao Germain, Soro Sandona Issa, Adja Miessan Germain and Jourda Jean Patrice
Abstract:
The bad practices of land use, in particular deforestation and rampant and anarchic urbanization, tend to reduce groundwater recharge in Abidjan District. This study aims to map the dynamics of potential infiltration zones for groundwater recharge to constitute decision-making support tools for their preservation in order to sustain the mobilization of groundwater resources. To do this, remote sensing techniques for processing Landsat (1986) and OLI (2018) satellite images and a GIS based on AHP multicriteria analysis are used. Established groundwater recharge potential zones maps showed a regression of strong (from 33% to 27%) and very strong (from 14% to 3%) infiltration degree zones in the North, Northwest and Northeast in favor of less favorable zones for infiltration, during the period from 1986 to 2018. The loss of contributing zones to a best recharge estimated at 365.5km2, is mainly due to ever-increasing urbanization, degradation of land cover and soils. The groundwater recharge potential zones maps are innovative tools that can help in decision-making to preserve or restore favorable areas of groundwater recharge by allowing controlled land use planning for sustainable management of groundwater resources.
Keywords: Satellite Images, GIS, Temporal and Spatial Dynamic, Groundwater Recharge Zones, Abidjan District, Côte d’Ivoire