Synthesis and corrosion inhibition evaluation of novel aminic nitrogen-bearing 1,2,4-triazole Schiff base compounds

Simple, effective, and high yield synthetic procedure for the synthesis of Schiff bases 5a-c is described. The scope of this reaction was investigated and noted that the presence of nickel(II) nitrate hexahydrate gave the corresponding Schiff bases in excellent yields. The inhibition effects of N-((1-phenyl-3-(thiophen-2-yl)-1H-pyrazol-5-yl)methylene)-4H-1,2,4-triazol-3-amine (PTP), 5c, have been investigated against the corrosion of copper in 0.5 M HCl solution. The investigations were accomplished using potentiodynamic polarization and electrochemical impedance measurements. Potentiodynamic polarization measurements indicated that the examined compound is mixed-type inhibitor. The results of electrochemical impedance indicated that the values of the charge transfer resistance and the inhibition efficiency tend to be increased by increasing the inhibitor concentration

FINANCEMENT DES COOPERATIVES AGRICOLES MAROCAINES, STRUCTURE ET PERFORMANCE

This article aims identifying investment behavior of a sample of Moroccan agricultural cooperatives, especially from the region of Souss Massa Daraa (SMD). There is, first, to determine the preferences of cooperatives in funding methods, and second, to analyze the financial structure of cooperatives, through financial indicators and leverage. The research examines the impact of this financial structure on economic performance. The empirical study examines a sample of 31 cooperatives, through a survey conducted via a questionnaire, and an accounting and financial data analysis of the sample during the period 2009, 2010 and 2011. Assumptions validity tests are based on a descriptive approach, enhanced by an econometric cross-section model

Value-adding and Monitoring Activities of Venture Capital:A Synthesis Literature Review

This article provides a synthesis overview of the corporate governance literature related to the venture capital (VC) investors (or venture capitalists: VCs) bring to their portfolio companies, especially from the investment structuring to the exit date. The relationship between VC investors and investee firms has been studied mainly from the perspective of Agency Theory, through control mechanisms and incentives adopted by VC investors. However, this paper draws attention to the nature of non-financial value-added and analyzes the importance of cognitive and relational dimension of governance between the different types of VC investors. The studies reviewed in this article focus on two primary areas of inquiry: (i) active involvement of venture capitalists, (ii) venture capitalists monitoring. While much has been learned in each area, this review highlights several areas in which our understanding of the issues remains incomplete. Keywords: Venture Capital. Private Equity. Value-added and monitoring. Governance.

E-Learning Acceptance in the Post COVID-19 Period: A Case Study

The experience lived by students during the COVID-19 pandemic will remain etched in their memory because they suddenly found themselves confined and they were forced to continue their studies entirely online from home. This article focuses on the study of factors that may influence students of the National School of Business and Management of Oujda in Morocco to continue using e-learning in the post COVID- 19 period. The research model is based on the Technology Acceptance Model and is validated using structural equation methods. Data analysis showed the importance of the online course design factor on perceived ease of use and perceived usefulness. It revealed the direct influence of these two factors on the use of the e-learning system, which is also influenced indirectly by social influence through the mediatization of perceived usefulness

Inhibition of copper corrosion by bipyrazole compound in aerated 3% NaCl

AbstractThe corrosion behaviour of copper in aerated 3% NaCl solution was investigated by rotating electrode at various rates. The reduction of O2 obeys the Levich equation. The inhibition of the copper corrosion in aerated 3% NaCl solution was studied by using potentiodynamic polarisation and linear polarisation resistance (LRP) in the presence of different concentrations of a bipyrazolic compound named N,N-bis (3-carbomethoxy-5-methylpyrazol-1-ylmethyl) cyclohexylamine (BiPyA). The presence of this compound in the solution decreases the corrosion current density and increases the linear resistance polarisation. The inhibition efficiencies obtained from cathodic Tafel plots and LRP methods are in good agreement. BiPyA compound presents an efficient inhibitor of copper corrosion, acts as a mixed-type inhibitor and adsorbs on the copper surface according to the Langmuir isotherm model

Analyse de la contribution des coopératives dans le développement socio-économique: Cas de la région de Taroudant

RésuméAnalyse de la contribution des coopératives dans le développement socio-économique : Cas de la région de Taroudant. De nos jours, les organismes de l’économie sociale et solidaire (ESS), en particulier les coopératives, revêtent une importance considérable pour le tissu économique, social et politique. Cette importance est imputable au rôle dévolu à ce sujet dans l’amélioration des conditions de vie des acteurs à travers la création des emplois et des richesses. Dans ce sens, nous visons dans ce papier mettre en évidence la contribution économique et sociale des coopératives dans la région de Taroudant. Afin de répondre à notre objectif, nous avons opté pour une démarche qualitative à caractère exploratoire, basée sur des entretiens semi-directifs réalisés avec les responsables des coopératives étudiées.Mots-clés :Coopérative, Développement social, Développement économique.Classification JEL : E24, J16,O18, P13, P25,P36, Q13, R58AbstractContribution Analysis of cooperatives to socio-economic development: Case of Taroudantregion.Nowadays, organizations of social and solidarity economy (SSE), especially cooperatives, havea considerable importance for the economic, social and political environment. This importance is due to the role played in improving the lives of actors through the creation of jobs and wealth. In this sense, this paper to highlight the economic and social contribution of cooperatives in the Taroudant region. To do this, we have opted for a qualitativeexploratory approach, based on semi-structured interviews with managers of cooperatives studied.Keywords:Cooperative, Social development, Economic developmentJEL classification: E24, J16, O18, P13, P25, P36, Q13, R58الملخصتحليل مساهمة التعاونيات في التنمية الاجتماعية والاقتصادية: دراسة حالة منطقة تارودانتتكتس ي منظمات الاقتصاد الاجتماعي والتضامني، وخاصة التعاونيات أهمية كبيرة بالنسبة للنسيج الاقتصادي،الاجتماعي والسياس ي؛ وذلك راجع إلى دورها في تحسين شروط عيش الفاعلين من خلال خلق فرص الشغل والثروة.انطلاقا من هذا المنظور، نهدف في هذه الدراسة إلى تسليط الضوء على الدور الاقتصادي والاجتماعي للتعاونيات فيالمجال الترابي لإقليم تارودانت. ولتحقيق الهدف المتوخى من هذه الدراسة، اخترنا منهجا علميا كيفيا ذي خاصيةإستطلاعية، مستند ينفي ذلك على المقابلات الشبه المباشرة مع مسؤولي التعاونيات محل موضوع هذه الدراسة.الكلمات المفتاحية: التعاونية، التنمية الاجتماعية، التنمية الاقتصادية

Capital-investissement et financement de l’innovation : Une revue de la littérature

The purpose of this article is to review studies dealing with innovation in the context of private equity. Based on our literature review, we note the role of private equity in fostering innovation and growth in Small and medium-sized enterprises (SME). Thus, venture capital is early financing for innovative firms (seed and start-up stage). Although in the case of buy-out financing, investment criteria used by investors are based on the evaluation process of the innovation capacities according to the firm growth scenario expected

(Z)-2-benzylidene-2H-[1, 4] benzothiazin-3-one(T1) as New Synthesized Corrosion Inhibitor for Mild Steel in 0.5 M H2SO4

The corrosion inhibition of mild steel in 0.5 M H2SO4 solution by (Z)-2-benzylidene-2H-[1,4]benzothiazin-3-one: (T1)  has been studied using electrochemical polarization , electrochemical impedance spectroscopy (EIS) and weight loss methods. The corrosion inhibition efficiency measured by all the three techniques was in good agreement with each other. The results showed that T1 is a very good inhibitor for mild steel in acidic media. The inhibition efficiency increases with increasing inhibitor concentration. It acts as a mixed-type inhibitor. EIS plots indicated that the addition of T1 increases the charge-transfer resistance (Rct), decreases the double-layer capacitance (Cdl) of the corrosion process, and hence increases inhibition efficiency. The adsorption of the T1 on the mild steel surface in acid solution obeys the Langmuir adsorption isotherm

New Corrosion inhibition of mild steel by 7-bromopyrido[2,3-b]pyrazine-2,3(1H, 4H)-dithiol in 1M hydrochloric acid solution

The corrosion inhibition performance of synthesized inhibitor 7-bromopyrido[2,3-b]pyrazine-2,3(1H,4H)-dithiol (M2) was investigated on mild steel corrosion in 1 HCl using gravimetric and electrochemical measurements. The studied inhibitor, M2showed the maximum inhibition efficiency (E) of 91% at a concentration as low as 10-3M. The potentiodynamic polarization studies showed that the studied inhibitor (M2) act as mixed inhibitor. The results of EIS studies showed that in the presence of inhibitor M2, transfert charge resistance increased and Cdl decreased due adsorption of inhibitor at the mild steel surface. The adsorption of inhibitor molecules on mild steel surface obeys the Langmuir adsorption isotherm. The results of the theoretical investigation and experimental studies well complimented each other

Evolution of Industry 4.0 and Its Implications for International Business

Industry 4.0 is the natural consequence of the techno-industrial development of the last decades. It has the huge potentiality to change the way globalization of manufacturing and consumption of goods and services that take place in the global markets. This chapter will focus on the evolution of Industry 4.0 and how this new technological framework will create values for firms and consumers, and how we can use it for a firm’s competitiveness and save them from the fallout of its development. An extensive literature review shows that the multi-faceted technology will hugely impact the global value chain, global supply chain, and new global division of labor (NGDL). It will reconfigure and re-distribute the business activities in the developing, emerging, and developed country markets and small and medium sizes firms and MNCs. The rapid development of technological and human capabilities can allow firms to reap benefits from this technology. At the same time, there are many challenges related to skill shortages, technological issues, business ethics, and values that need to be overcome to reap a profit from this new technological advancement