## Acknowledgement to Reviewers of _Applied Sciences_ in 2019
Jansing, David  
Janssen, Rolf  
Janssens, Gerrit K.  
Jaquess, Kyle  
Jara, Nicolas  
Jaradat, NidalJaramillo-Moran, Miguel A. Jaremkiewicz, Magdalena Jaroslav, Vrchota Jarosz-Wilkolazka, Anna Jarquin Laguna, Antonio Jarquin, Diego Jarrat, Radi Jarzabek, Dariusz Jaschke, Artur C Jasiellec, Jerzy J. Jasinska, Izabela Jasinski, Mariusz Jasiul, Bartosz Jasiulewicz, Malgorzata Jasiunas, Lukas Jasiuniene, Elena Jasiewicz, Marek Jasiwick,  
Jia, Mingtu  
Jia, Ru  
Jia, Xiaodong  
Jia, Yu  
Jia, Zixian  
Jiang, Cheng  
Jiang, Jinwei  
Jiang, Long  
Jiang, Mingjun  
Jiang, Wen  
Jiang, Wenping  
Jiang, Yu  
Jiang, Ziwen  
Jiao, Zhicheng  
Jibson, Randall W.  
Jin, Kiwoong  
Jimenez Alonso, Javier Fernando  
Jimenez Ballesta, Ana Eva  
Jimenez Millan, Juan  
Jimenez, Alfredo Arcos  
Jimenez, Felipe  
Jimenez, Jorge  
Jimenez, Jose Ramon  
Jimenez, Marcos  
Jimenez, Miguel  
Jimenez, Ricardo  
Jimenez-Ballesta, Raimundo  
Jimenez-Bravo, Diego M.  
Jimenez-Villacorta, Felix  
Jimeno, Ciril  
Jin, Andrew  
Jin, Chaoyuan  
Jin, Chenglu  
Jin, Chul Kyu  
Jin, Di  
Jin, Junghee  
Jin, Qianru  
Jin, Tae-Seok  
Jin, Xiaomin  
Jin, Zhanpeng  
Jindo, Keiji  
Jiralerspong, Trongmun  
Jirasek, Vit  
Jo, Young Hoon  
Joao Ramalhosa, Maria  
Jobling, Malcolm  
Jochymczyk-Wozniak, Katarzyna  
Joe, Daniel  
Jofre-Reche, Jose A.  
JOHAL, Wafa  
Johannes, Kiefer  
Johannssen, Arne  
Johansson, Nils  
John, Blooma  
Johnsen, Fredrik Moltu  
Johnson, Glenn  
Johnson, Robert P.  
Jombo, Ghanaibolou  
Jonek-Kowalska, Izabela  
Jones, Christopher A.  
Jones, Owen Griffith  
Jones, Rachael M.  
Jones, Rodney P.  
Jonmohamadi, Yaqub  
Jonuscheit, Joachim  
Joo, Ki-Nam  
Jorat, Ehsan  
Jordan, Manuel  
Jorquera-Chavez, Maria  
Jorquera-Lucerga, Juan Jose  
Jose Antonio, Garcia Orza  
Jose Ignacio, Jimenez Gonzalez  
Jose, Pazos Arias  
Jose, Rui  
Jose, Arnal  
Joseph, Tibin  
Joshi, Suraj  
Josipovic, Marko  
Jotautiene, Egle  
Jothi, Palani Raja  
Jouk, Pierre Simon  
Jovicic, Vojkan  
Joyce, Chris  
Jozaghi, Ali  
Jozef, Stoklosa  
Jozsef Gabor, KovacsJozwiak-Niedzwiedzka, Daria JurcCUT, ANCA DELIA Jozwik, Pawel Jurdziak, Leszek Ju, Li Jurgen, Bar Ju, Shen-haw Juricic, Dani Juan, Guillermo Jura-Valdes, Andres Judd, John P. Judge, Mark Juergert, Anne Juergert, Anne Juergert, Anne Juergo, Josu Juhl, Peter Julien, Christian M. Julien, Yves Julio, Nogales-Bueno Jurcado, J. Jundi, J. Jun, Martin Byung Guk Jura, and Sung-Ho Jun, Yang  
Kah, Linda Kahaki, Seyed M. M. M. Kahle, Eckhard Kahler, Heike Kaimaris, Dimitris Kaimaris, Dimitris Kairyte, Agne Kaisarly, Dalia Kajtaz, Mladenko Kakarountas, Athanasios Kakay, Attila Kakinuma, Yoshihiko Kaklis, Kostas Kalalas, Charalampos Kalali, Ehsan Naderi Kalandyk, Barbara Kalatehjari, Roohollah Kalayci, Tuna Kalenik, Marek Kalienik, Gergely Kalinich, John Kalinichenko, Antonina Kalinitchenko, Valery Kalinowska-Wichrowska, Katarzyna Kalinowski, Krzysztof Kalinowski, Maciej Kalisz, Piotr Kaliszyk, Cezary Kalla, Smail Kalliatakis, Grigorios Kalliotas, Dimitrios Kalmar, Ferenc Kalogeropoulos, Kleomenis Kalogiannis, Konstantinos G. Kalogirou, Andreas S. Kaloyanova, Kalinka Kalis, Megha Kalteremidou, Kalliopi-Artemi Kalu, Amos Kaluza, Marta Kalyna, Ramalingam Venkat Kamali, Tai-Yan Kamali, Saeed Kamamichi, Norihiro Kamari, Aliakbar Kamari, Aliakbar Kamatham, Nareshbabbu KAMBAYASHI, Yasushi Kamdem, Donatien Pascal Kameoka, Jun Kameoka, Atsushi Kamhoua, Charles A Kami, Yasushi Kaminaka, Hironori Kaminska-Chuchmala, Anna Kaminski, Marcin Kamiya, Osamu Kammer, Dietrich Kampa, Adrian Kamshilin, Alexei Kan, Yu-Cheng Kanaev, Andrei Kanagaraj, Venkatesan Kanakaris, Venetis Kanakoudis, Vasilis Kanakubo, Toshiyuki Kanarachos, Stratis Kanari, Ndue Kanazaki, Masahiro Kanakadiurai, S Kandasamy, Nandha Kumar Kandath, Harikumar Kandel, Saroj Kandil, Sahar Kane, Martin R. Kanellopoulos, Christos Kanellopoulos, Dimitris Kanematsu, Hideyuki Kang, Hee-Jun Kang, Hyunchul Kang, James Kang, James Kang, James King, James King, James King, James King, James King, James King, Lei Kang, Li-Wei Kang, Li-Wei Kang, Li-Wei  
* Karkanis (2020) Karkanis, Stavros A. Karkazis, Panagiotis A. Karkazis, Panagiotis A. Karki, Rajesh Karl, Sebastian Karle, Timothy Karlin, Ian Karlsteen, Magnus Karnama, Ahmad Karnaouri, Anthi Karnowski, Karol Karpenko, A. P. Karperien, Audrey L. Karpetis, Adonios Karpov, Sergey Kartashov, Yaroslav V Kartin, Unit Three Karutaa Gnaniar, Sampath Kumar Karvelas, Evangelos Karvelis, Petros Karvinen, Reijo Karvounis, Artemios Karwowski, Waldemar Karytsas, Spyridon Kasaac, Josip Kasaac, Naoya Kasaac, Naoya Kasapakis, Vlasios Kasbohm, Jorn Kashaninejad, Navid Kashimura, Keiichiro Kashiwagi, Yoshitomo Kasnirski, Krzysztof Kasnatschew, Johannes Kasneci, Enkelejda Kasnesis, Panagiotis Kasprzyk, Jerzy Kassai, Miklos Kasser, Michel Kassi, Tuomo Kastner, Christian Kastrati, Zenun Kastrisios, Christos Katagis, Thomas Katagis, Thomas Kataria, Sateder Kateris, Dimitrios Kathiravelu, Pradeeban Kathuria, Himanshu Katin, Konstantin P. Kato, Hirohito Katrakazas, Christos Katsavelis, Dimitrios Katsigiannis, Yiannis Katsikas, Sokratis Katunin, Andrzej Katz, Jonathan I. Kauf, Sabina Kaufeld, Michael Kauffman, Kathryn Marie Kaufhold, Stephan Kaunda, Rennie Kaur, Amardeep Kaur, Jagdeep Kaur, Jagdeep Kaur, Jasmine Kaushik, Nagendra Kavalenka, Maryna N. Kavcic, Vojko Kavitha, G. Kawabata, Norifumi Kawabata, Yuichiro Kawaguchi, Noriyuki Kawaguchi, Noriyuki Kawaguchi, Noriyuki Kawai, Takayuki Kawai, Vivian K. Kawakami, Eiryo Kawamura, Izuru Kawamura, Takuji Kawarazaki, Noriyuki Kawasaki, Tsuneomi Kawashima, Kenji Kawata, Yukichika Kawecka, Agnieszka Kazak, Jan Kazakbaev, Vadim Kazama, Motoki Kazanskiy, Nikolay Kazansky, Leonid Kazemi, Amirkhosro Kazimierczuk, Krzysztof
* Kazimierski (2020) Kazimierski, Witold Ke, Jia-Hong Ke, Xie Ke, Xie Kearney, Gavin Kebande, Victor R Kechagias, John Kechagias-Stamatis, Odysseas Kedgley, Angela Kefalas, George Kegl, Breda Kegl, Tina Kehagia, Fotini Kehli, Florian Keimer, Alexander Keiser, Gerd Kejriwal, Mayank Kelemen, Michal Keller, Andreas Keller, Clement Keller, Dustin Keller, Jan Dominik Keller, Sandro Kelley, Steven Kelly, Christopher Kenawy, Hamed Salah Kendall, S. L. Kent, Tom Keppens, Arno Ker, Jun-ing Keramatikerman, Mahdi Kerarne, Hugo A. Keramshachi, Sharareh Kermarrec, Gael Keromnes, Alan Kerpen, Nils B. Kertmen, Ahmet Keser, Tomislav Kesharwani, Siddharth Keshtgar, Azadeh Keshtkaran, Mohammad Reza Kesidis, Anastasios L. Kesiman, Made Windu Antara Keskinarkaus, Anja Kessisoglou, Nicole Keszocze, Oliver Ketels, Christian Ketkaew, Jittisa Khabaz, Fardin Khademi, Faezehossadat Khadka, Dhruba B. Khafaji, Salwan Khakurel, Jayden Khalaf, Walaa Khalaji, Omid Khaleghi, Morteza Khalaf, Malik Khalid, Azfar Khalifa, Sara Khalili, Ashkan Khalili, Fardin Khalilinejad, Arash Khalloo, Ali Khandi, Tariq Khan, Aamir Khan, Arifur R. Khan, Dawar Khan, Faheem Khan, Irfan Ahmad Khan, Khalid Khan, Md.