Modern Environmental
    Science and Engineering
            Volume 6, Number 4, April 2020
                    Editorial Board Members: 
                    Prof. Shin-Jye Liang (Taiwan)                                  Prof. Maria Ananiadou – Tzimopoulou (Greece) 
                    Prof. László Tóth (Hungary)                                    Prof. Tetsuya Hiraishi (Japan)      
                    Dr. Pierantonio De Luca (Italy)                                Prof. Alaeddin BOBAT (Turkey) 
                    Prof. Teodor Rusu (Romania)                                    Prof. Ying I. Tsai (Taiwan)   
                    Dr. Ahmed Moustafa Ahmed Moussa (Egypt)                        Prof. Michela Longo (Italy) 
                    Prof. Nikolina Tzvetkova (Bulgaria)                            Prof. Mona Nabil ElHazek (Egypt) 
                    Dr. Riccardo Buccolieri (Italy)                                Prof. Fares D Alsewailem (Saudi Arabia) 
                    Prof. Ajay Kumar Mishra (South Africa)                         Prof. Miklas Scholz (Sweden)        
                    Dr. Saleh Almogrin (Saudi Arabia)                              Prof. Abdulrazag Y. Zekri (UAE) 
                    Prof. Carlos Alberto Carvalho Castro (Brazil)                  Prof. Maria Ananiadou – Tzimopoulou (Greece) 
                    Prof. Muzher Mahdi Ibrahem (Iraq)                              Prof. Alaeddin BOBAT (Turkey)   
                    Prof. Abdelazim Mohamed Abdelhamid Negm (Egypt)                Prof. Essam E.Khalil (Egypt ) 
                    Prof. Carlos Alberto Carvalho Castro (Brazil)                  Prof. Ying I. Tsai (Taiwan)   
                    Prof.Cecilia Lezama Escalante (México)                         Prof. Antonio Formisano (Italy) 
                    Prof. Juchao Yan (USA)                                         Prof. Erivelto Luís de Souza (Brazil)    
                    Prof. Levent Bat (Turkey)                                      Prof. Kim Choon Ng (Saudi Arabia) 
                    Prof. Kristaq BERXHOLI (Albania)                               Prof. Adilson Costa Macedo (Brazil)      
                    Prof. Bakenaz A. Zeidan (Egypt)                                Prof. Dr. Andrey N. Dmitriev (Russia) 
                    Prof. Juraj Králik (Slovak)                                    Prof. Abdelaziz Khlaifat (UAE)      
                    Prof. Wail Nourildean Al Rifai (Jordan)                        Prof. Maria Paola Gatti (Italy) 
                    Prof. Heng Zhang (Taiwan)                                      Prof. Viacheslav Manukalo (Ukraine)      
                    Assist. Prof. Michela Longo (Italy)                            Prof. Elena Mussinelli (Italy) 
                    Prof. Mona Nabil ElHazek (Egypt)                               Prof. George Papadakis (Greece)    
                    Prof. Fares D Alsewailem (Saudi Arabia)                        Prof. INOM NORMATOV (Tajikistan)   
                    Prof. Miklas Scholz (Sweden)                                   Asst Prof. Dr. Mustafa Toker (Turkey) 
                    Prof. Abdulrazag Y. Zekri (UAE)                                                            
                                                                                   Prof. Shouji Usuda (Japan)
                     
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                        Modern Environmental  
                                                                                                                
                    Science and Engineering
                                                                   
                                               Volume 6, Number 4, April 2020  
              
              
              
               Contents 
                      Technical Papers                                                                      
               425    Study of the Influence of Pre-Treatment in the Grape Waste Biogas Generation 
                      Parralejo A. I., Royano L., Acevedo M., Cabanillas J., and Jerónimo González Cortés 
               435    Institutional Failures in the Management and Transfer of Irrigation Works in Guanajuato, México 
                      Amelia Reyes Martinez, Juan Carlos Castro Ramírez, and Guillermo Martínez Atilano 
               443    Establishing Research Indicators of Quantity and Assessment Economic Values of Na Tum Pb-Zn 
                      mine in Bac Can Province, Vietnam 
                      Nguyen Phuong, Nguyen Quoc Dinh, Nguyen Thi Thu Hang, Vu Thi Lan Anh, and Nguyen Phuong 
                      Dong 
               454    Green Perceptions or Green Practices: What Are the Strongest Influences on Work Engagement? 
                      Helena Mateus Jerónimo, Paulo Lopes Henriques, and Teresa Correia de Lacerda 
               462    Effect of Stone Ash Mixture and Coconut Fiber on Concreate Compressive Strenght 
                      Mardiaman 
               472    Fair  Trade  and  Ethical,  Responsible  and  Solidary  Consumption:  A  University  Educational 
                      Proposal 
                      Hilda Carmen Vargas Cancino, David E. Velázquez, and Virginia P. Panchi 
               482    Impact Assessment of Climate Change on Industry and Trade in Binh Thuan Province 
                      Nguyen V. Hong, Le A. Ngoc, and Vo T. Nguyen 
               490    Forests for the Future: The Great Challenge 
                      Miguel Caballero-Deloya 
                
               494    The Aftermath of Mekuno at Jarziz Watershed in Dhofar 
                      Amna Al Ruheili 
               500    Smart Grid Implementation in Mozambique: Where to Start? 
                      Nelson Manuel Alfredo Chapala 
               509    Accuracy  of  the  Empirical  Estimate  of  AGD  of  Patients  Exposed  to  Conventional 
                      Mammographical Exams 
                      Fredy Julian Gómez Grance, and Analiz López Espinoza 
               514    Serra da Tiririca Dogs and Cats Project: Population Control Data in the Serra da Tiririca State 
                      Park, Rio de Janeiro 
                      Gabriela Lins de Albuquerque, Daiana Santana, Phillipe Doria, João Silveira, Fernando Paqueco, 
                      Carolina Colchete, Ana Carolina Meirelles, Beatriz da Silva, Fábio Ascoli, Aline de Souza1, Gisela Gioia, 
                      Felipe Queiroz, Nádia Almosny, and Sávio Bruno