## Acknowledgement to Reviewers of _Applied Sciences_ in 2019
Andersson, Karl Andersson, Martin Ando, Bruno Ando, Shinji Ando, Yasutaka Ando, Yasutaka Ando, Yoshito Andoga, Rudolf Andrade De Jesus, Danilo Andrade, Luisa Andras, Peter Andrea, Penoni Andreadakis, Andreas Andrearczyk, Vincent Andreaus, Ugo Andreia, Gabriel Andrei, Valentina Andreoni, Giuseppe Andretta, Massimo Andrew, NGO Chun Yong Andrikopoulos, George Andriolli, Nicola Andriolo, Umberto Androvec, Darko Androniaki (Nina), Papafilippaki Andronopoulos, Spyros Andrzej, Mazur Andrzej, Mazur Andwari, Amin Mahmoudzadeh Anezakis, Vardis-Dimitris Ang, Chee Wei Ang, Linus Yinn Leng Angelakeris, Makis Angelico, Ruggero Angelidis, Pantelis Angelini, Marco Angerani, Jean-Francois Anggraini, Vivi Angurel, L.A. Anim-Danso, Emmanuel Anita Ioana, Visan Anitescu, Cosmin Annic, Cosmin Anni, Marco Annic, Rubbens Annuis, Paul Annsari, Farhan Ansean, David An Annal, Marcel Ante, LennartAntico, Enriqueta Antipov, Oleg L. Antoce, Arina Oana Antoine, Rodolphe Anton, David Anton, Javier Munoz Antonakis, Georgios Antonanzas, Javier Antoni, Jerome Antoniadou, Chryssanthi Antoniotti, Sylvain Antonkiewicz, Jacek Antosz, Katarzyna Antoun, Bonnie R. Antunes, Carlos M. Correia Antunes, Marcelo Anupam, Kumar Anvari-Moghaddam, Amjad Anver, Shajahan Anwar, Mohammad Anwar, Suzan Anyszka, Rafal Aoude, Hassan Aoyagi, Manabu Aoyagi, Takao Aparicio Ruiz, Pablo Aparicio, Sofia Apostol, Marian Appadoo, Srimantoorao Appelo, Daniel Apperley, Mark Appiah-Hagan, Emmanuel Aprea, Ciro Aprile, Marcello Aparicio, Marcello Aparicio, Aparicio, Robert Arapa, Saeed Arabie, Aradia, Aradia, David Aradilla, David Aragon, Janni Aragues, Rosario Arampatzis, Georgios Arampatzis, Neestor Arana-Arevaloleiba, Nestor Arandjelovic, Ognjen Arango-Miranda, Raul Arana, Jose Arana, Catalin Araniciu, Catalin Arashpour, Mehrdad Amato, Elisabetta Araujo Dos Santos, Jose Viriato Araujo, Alvaro Araujo, Noelia Araujo, Saunel Simon Arazuri, Silvia Arca-Moret, Andres Arcezewska, Marta Ardalan, Maryam Ardelean, Lavinia Cosmina Arena, Andrea Arena, Maurizio Arenas, Luis Fernando Argin, Mehmet Argyropoulos, Christos Arias Trujillo, Juana Arias-Pardilla, Joaquin Arif, Muhammad Ariga, Katsuhiko Ariyoshi, Kingo Ariyour, Kartik B. Aparicio Ruiz, Pablo Ariza, H. Eduardo Aparicio, Sofia Aryamand, Mohammad Apostol, Marian Apradooo, Srimantoorao Appelo, Daniel Apperley, Mark Apiah-Hagan, Emmanuel Aprea, Ciro Aprile, Marcello Aparicio, Robert Arapa, Saeed Arabie, Ali Aradilla, David Aragon, Janni Aragues, Rosario Arampatzis, Georgios Arampatzis, Negtor Aranda-Arevaloleiba, Nestor Arandjelovic, Ognjen Arango-Miranda, Raul Arana, Jose Arana, Catalin Araniciu, Catalin Arashpour, Mehrdad Amato, Elisabetta Araujo Dos Santos, Jose Viriato Araujo, Alvaro Araujo, Noelia Araujo, Saunel Simon Arazuri, Silvia Arca-Moret, Andres Arcezewska, Marta Ardalan, Maryam Ardelean, Lavinia Cosmina Arena, Andrea Arena, Andrea Arenas, Maurizio Arenas, Luis Fernando Argin, Mehmet Argyropoulos, Christos Arias-Prudilla, Jana Arias-Pardilla, Joaquin Arif, Muhammad Arif, Muhammad Arif, Muhammad Arif, Arisa, Katsuhiko Ariyoshi, Kingo Ariyour, Kartik B. Aparicio Ruiz, Pablo Aparicio, Sofia Aryamand, Mohammad Apostol, Marian Apradooo, Srimantoorao Appelo, Daniel Apperley, Mark Appenlo, Daniel Apperley, Mark Appenlo, Daniel Apperley, Mark Appenlo, Emmanuel Aprea, Ciro Aprile, Marcello Aparicio, Robert Arapa, Saeed Arabie, Ali Aradilla, David Aradilla, David Aragon, Janni Aragues, Rosario Arampatzis, Georgios Arampatzis, Negtor Aranda-Arevaloleiba, Nestor Arandjelovic, Ognjen Arango-Miranda, Raul Arana, Jose Araniciu, Catalin Araniciu, Catalin Arashpour, Mehrdad Arano, Elisabetta Araujo Dos Santos, Jose Viriato Araujo, Alvaro Araujo, Noelia Araujo, Saunel Simon Arazuri, Silvia Arca-Moret, Andres Arcezewska, Marta Ardalan, Maryam Ardelean, Lavinia Cosmina Arena, Andrea Arena, Andrea Arenas, Maurizio Arenas, Luis Fernando Argin, Mehmet Argyropoulos, Christos Arias Trujillo, Juana Arias-Pardilla, Joaquin Arif, Muhammad Arif, Muhammad Arif, Muhammad Arif, Muhammad Arif, Muhammad Arif, Muhammad Arif, Muhammad Arif, Muhammad Arif, Muhammad Arif, Muhammad Arif, Muhammad Arif, Muhammad Arif, Muhammad Arif, Muhammad Arif, Muhammad, Arif, Muhammad Arif, Muhammad,Arnoso, Jose  
Arnusch, Christopher J.  
Arooj, Fatima  
Arora, Shashank  
Arrais, Aldo  
Arrasmith, William Wolfgang  
Arraut, Ivan  
Arrayas, Manuel  
Arrebola, Francisco J.  
Arrebola, Manuel  
Arribas, Juan Ignacio  
Arrinda, Amaia  
Arroyo Ohori, Ken  
Arrue, Begona C.  
Arseni, Stefan-Ciprian  
Arshad, Adeel  
Arsovski, Sasa  
Artal-Sevil, Jesus Sergio  
Artes, Mariano  
Artesani, Alessia  
Artese, Giuseppe  
Artiemjew, Piotr  
Artini, Cristina  
Artola, Garikoitz  
Arvanitis, Konstantinos  
Arvapally, Ravi K.  
Arya, Sampurna  
Arya, Pouria  
Arza, Marcos  
Asa'ad, Farah  
Asadi, Amin  
Asadi, Hamed  
Asai, Takehiko  
Asami, Toshihiko  
Aschilean, Ioan  
Aschonitis, Vassilis  
Ascigil, Onur  
Ascroft, Helen  
Aschrubali, Francesco  
Aseev, V. A.  
Asgari Gashteroodkhani, Oveis  
Asghar, Furqan  
Asghar, Mamoona  
Asgharzadeh, Amir  
Ashimatey, Bright Senyo  
Ashok, Ashwin  
Ashour, Mohamed Lotfy  
Ashton, Lorna  
Ashuri, Turaj  
Asikuzzaman, Md  
Asimakopoulou, Eleni  
Asimina, Stamatelopoulou  
Askraba, Sreten  
Aslani, Farhad  
Aspatwar, Ashok  
Asante, Dario  
Assi, Lateef N.  
Asirelli, Alberto  
Assis, Karcius Day Rosario  
Assmann, Marc  
Astakhov, Viktor P.  
Astarita, Vittorio  
Asteris, Panagiotis G.  
Astiaso Garcia, Davide  
Astolfi, Arianna  
Astolfi, Davide  
Asztemborska, Monika  
Ataka, Ahmad  
Atalay, Ozgur  
Atazadeh, Behnam  
Atencia, Jesus  
Athanasiou, Lampros  
Athanassios, Skodras  
Athenes, Manuel  
Athyros, Vasilios  
Atia, Mohamed  
Atkins, Anthony S  
Atkinson, Gary  
Atlan, Vereendra  
Atlam, Hany  
Attia, M. Helmi  
Attia, Sameh  
Attili, Antonio  
Attya, Ayman  
Atuchin, Victor V.  
Atukeren, Erdal* _Appl.