Tuottaja Elsevier Science & Technology

Cover for Song, Mengjie (JSPS Research Fellow, Department of Human and Engineered Environmental Studies, Graduate School of Frontier Sciences, The University of Tokyo, Japan) · Defrosting for Air Source Heat Pump: Research, Analysis and Methods - Woodhead Publishing Series in Energy (Paperback Book) (2019)

Defrosting for Air Source Heat P... (2019)

Song, Mengjie (JSPS Research Fel...

Cover for S.P. Cauvain · Breadmaking: Improving Quality - Woodhead Publishing Series in Food Science, Technology and Nutrition (Paperback Book) (2020)

Breadmaking: Improving Quality -... (2020)

Cover for Debabrata Barik · Energy from Toxic Organic Waste for Heat and Power Generation - Woodhead Publishing Series in Energy (Paperback Book) (2018)

Energy from Toxic Organic Waste ... (2018)

Debabrata Barik

Cover for Zhang, Hengyun (Shanghai University of Engineering Science, China) · Modeling, Analysis, Design, and Tests for Electronics Packaging beyond Moore - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2019)

Modeling, Analysis, Design, and ... (2019)

Zhang, Hengyun (Shanghai Univers...

Cover for Yekrangnia, Mohammad (Shahid Rajaee Teacher Training University, Tehran, Iran) · Advanced Design Examples of Seismic Retrofit of Structures (Paperback Book) (2018)

Advanced Design Examples of Seis... (2018)

Yekrangnia, Mohammad (Shahid Raj...

Cover for Kemp, Ian C. (Independent Consultant, UK) · Pinch Analysis for Energy and Carbon Footprint Reduction: User Guide to Process Integration for the Efficient Use of Energy (Paperback Book) (2020)

Pinch Analysis for Energy and Ca... (2020)

Kemp, Ian C. (Independent Consul...

Cover for Babu, K. Murugesh (Professor, Bapuji Institute of Engineering and Technology, Karnataka, India) · Silk: Processing, Properties and Applications - The Textile Institute Book Series (Paperback Book) (2018)

Silk: Processing, Properties and... (2018)

Babu, K. Murugesh (Professor, Ba...

Cover for 3D Printing in Medicine and Surgery: Applications in Healthcare - Woodhead Publishing Series in Biomaterials (Paperback Book) (2020)

3D Printing in Medicine and Surg... (2020)

Cover for Biomaterials for Skin Repair and Regeneration (Paperback Book) (2019)

Biomaterials for Skin Repair and... (2019)

Cover for Ali Seyfoddin · Engineering Drug Delivery Systems (Paperback Book) (2019)

Engineering Drug Delivery Systems (2019)

Cover for Polysaccharide Carriers for Drug Delivery (Paperback Book) (2019)

Polysaccharide Carriers for Drug... (2019)

Cover for Functional Polysaccharides for Biomedical Applications (Paperback Book) (2019)

Functional Polysaccharides for B... (2019)

Cover for Raivo Jaaniso · Semiconductor Gas Sensors - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2019)

Semiconductor Gas Sensors - Wood... (2019)

Cover for Handbook of Tissue Engineering Scaffolds: Volume Two - Woodhead Publishing Series in Biomaterials (Paperback Book) (2019)

Handbook of Tissue Engineering S... (2019)

Cover for Handbook of Tissue Engineering Scaffolds: Volume One - Woodhead Publishing Series in Biomaterials (Paperback Book) (2019)

Handbook of Tissue Engineering S... (2019)

Cover for Jimmy Walker · Decontamination in Hospitals and Healthcare - Woodhead Publishing Series in Biomaterials (Paperback Book) (2019)

Decontamination in Hospitals and... (2019)

Cover for Advances in Nuclear Fuel Chemistry - Woodhead Publishing Series in Energy (Paperback Book) (2020)

Advances in Nuclear Fuel Chemist... (2020)

Cover for Anastasios Vassilopoulos · Fatigue Life Prediction of Composites and Composite Structures - Woodhead Publishing Series in Composites Science and Engineering (Paperback Book) (2019)

Fatigue Life Prediction of Compo... (2019)

Anastasios Vassilopoulos

Cover for Fundamentals and Sensing Applications of 2D Materials - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2019)

Fundamentals and Sensing Applica... (2019)

Cover for Aleksandar Subic · Materials in Sports Equipment - Woodhead Publishing Series in Composites Science and Engineering (Paperback Book) (2019)

Materials in Sports Equipment - ... (2019)

Aleksandar Subic

Cover for Advances in Non-volatile Memory and Storage Technology - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2019)

Advances in Non-volatile Memory ... (2019)

Cover for Megson, T.H.G. (Professor Emeritus, Department of Civil Engineering, Leeds University, UK (deceased)) · Structural and Stress Analysis (Paperback Book) (2019)

Structural and Stress Analysis (2019)

Megson, T.H.G. (Professor Emerit...

Cover for Yang · Emission and Control of Trace Elements from Coal-Derived Gas Streams - Woodhead Publishing Series in Energy (Paperback Book) (2019)

Emission and Control of Trace El... (2019)

Cover for Ozan Erdinc · Pathways to a Smarter Power System (Paperback Book) (2019)

Pathways to a Smarter Power System (2019)

Cover for Vincenzo Guarino · Nanostructured Biomaterials for Regenerative Medicine - Woodhead Publishing Series in Biomaterials (Paperback Book) (2019)

Nanostructured Biomaterials for ... (2019)

Vincenzo Guarino

Cover for Sinnott, Ray (Formerly, University of Wales, Swansea, UK) · Chemical Engineering Design: SI Edition - Chemical Engineering Series (Paperback Book) (2019)

Chemical Engineering Design: SI ... (2019)

Sinnott, Ray (Formerly, Universi...

Cover for Rui Miranda Guedes · Creep and Fatigue in Polymer Matrix Composites - Woodhead Publishing Series in Composites Science and Engineering (Paperback Book) (2019)

Creep and Fatigue in Polymer Mat... (2019)

Rui Miranda Guedes

Cover for Thijssen, Pierre C. (University of Amsterdam, The Netherlands) · State Estimation in Chemometrics: The Kalman Filter and Beyond (Paperback Book) (2020)

State Estimation in Chemometrics... (2020)

Thijssen, Pierre C. (University ...

Cover for Norsaadah Zakaria · Anthropometry, Apparel Sizing and Design - The Textile Institute Book Series (Paperback Book) (2019)

Anthropometry, Apparel Sizing an... (2019)

Norsaadah Zakaria

Cover for Mishra, Rajesh (Professor, Department of Material Science and Manufacturing Technology, Czech University of Life Sciences Prague, Czech Republic) · Nanotechnology in Textiles: Theory and Application - The Textile Institute Book Series (Paperback Book) (2018)

Nanotechnology in Textiles: Theo... (2018)

Mishra, Rajesh (Professor, Depar...

Cover for Gordon, Nathan J. (Director of The Academy for Scientific Investigative Training, Philadelphia, PA, USA) · Effective Interviewing and Interrogation Techniques (Hardcover Book) (2019)

Effective Interviewing and Inter... (2019)

Gordon, Nathan J. (Director of T...

Cover for Hughes, Austin (Department of Electrical and Electronic Engineering, University of Leeds, UK) · Electric Motors and Drives: Fundamentals, Types and Applications (Paperback Book) (2019)

Electric Motors and Drives: Fund... (2019)

Hughes, Austin (Department of El...

Cover for Developments in the Formulation and Reinforcement of Concrete - Woodhead Publishing Series in Civil and Structural Engineering (Paperback Book) (2019)

Developments in the Formulation ... (2019)

Cover for Runco, Mark A. (Director of Creativity Research & Programming, Southern Oregon University, Ashland OR, USA) · Creativity: Research, Development, and Practice (Hardcover Book) (2023)

Creativity: Research, Developmen... (2023)

Runco, Mark A. (Director of Crea...

Cover for Structure and Mechanics of Textile Fibre Assemblies - The Textile Institute Book Series (Paperback Book) (2019)

Structure and Mechanics of Texti... (2019)

Cover for Annie Marion-Poll · Abscisic Acid in Plants (Hardcover Book) (2019)

Abscisic Acid in Plants (2019)

Annie Marion-Poll

Cover for Fu, Shao-yun (Chinese Academy of Sciences, China) · Science and Engineering of Short Fibre-Reinforced Polymer Composites - Woodhead Publishing Series in Composites Science and Engineering (Paperback Book) (2019)

Science and Engineering of Short... (2019)

Fu, Shao-yun (Chinese Academy of...

Cover for Bruno G Pollet · Hydrogen, Biomass and Bioenergy: Integration Pathways for Renewable Energy Applications - Hydrogen and Fuel Cells Primers (Paperback Book) (2020)

Hydrogen, Biomass and Bioenergy:... (2020)

Cover for Subramanian Senthilkannan Muthu · Circular Economy in Textiles and Apparel: Processing, Manufacturing, and Design - The Textile Institute Book Series (Paperback Book) (2018)

Circular Economy in Textiles and... (2018)

Subramanian Senthilkannan Muthu

Cover for Breeze, Paul (Freelance Science and Technology Writer / Consultant, UK) · Power Generation Technologies (Paperback Book) (2019)

Power Generation Technologies (2019)

Breeze, Paul (Freelance Science ...

Cover for Advances in Textile Biotechnology - The Textile Institute Book Series (Paperback Book) (2019)

Advances in Textile Biotechnolog... (2019)

Cover for Subramanian Muthu · Water in Textiles and Fashion: Consumption, Footprint, and Life Cycle Assessment (Paperback Book) (2018)

Water in Textiles and Fashion: C... (2018)

Subramanian Muthu

Cover for Qiaoliang Bao · 2D Materials for Photonic and Optoelectronic Applications - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2019)

2D Materials for Photonic and Op... (2019)

Cover for Li, Shuguang (Professor of Aerospace Composites, the Institute for Aerospace Technology, Faculty of Engineering, University of Nottingham, UK) · Representative Volume Elements and Unit Cells: Concepts, Theory, Applications and Implementation - Woodhead Publishing Series in Composites Science and Engineering (Paperback Book) (2019)

Representative Volume Elements a... (2019)

Li, Shuguang (Professor of Aeros...

Cover for Jean-Pierre Boutrand · Biocompatibility and Performance of Medical Devices - Woodhead Publishing Series in Biomaterials (Paperback Book) (2019)

Biocompatibility and Performance... (2019)

Jean-Pierre Boutrand

Cover for Gersak, Jelka (Research and Innovation Centre for Design and Clothing Science, Faculty of Mechanical Engineering) · Design of Clothing Manufacturing Processes: A Systematic Approach to Developing, Planning, and Control - The Textile Institute Book Series (Paperback Book) (2022)

Design of Clothing Manufacturing... (2022)

Gersak, Jelka (Research and Inno...

Cover for Roger Narayan · Rapid Prototyping of Biomaterials: Techniques in Additive Manufacturing - Woodhead Publishing Series in Biomaterials (Paperback Book) (2019)

Rapid Prototyping of Biomaterial... (2019)

Cover for Kheng Lim Goh · Interfaces in Particle and Fibre Reinforced Composites: Current Perspectives on Polymer, Ceramic, Metal and Extracellular Matrices - Woodhead Publishing Series in Composites Science and Engineering (Paperback Book) (2019)

Interfaces in Particle and Fibre... (2019)

Cover for Metals for Biomedical Devices - Woodhead Publishing Series in Biomaterials (Paperback Book) (2019)

Metals for Biomedical Devices - ... (2019)

Cover for Drygas, Piotr (Associate Professor, Department of Mathematical Analysis, University of Rzeszow, Poland) · Applied Analysis of Composite Media: Analytical and Computational Results for Materials Scientists and Engineers - Woodhead Publishing Series in Composites Science and Engineering (Paperback Book) (2019)

Applied Analysis of Composite Me... (2019)

Drygas, Piotr (Associate Profess...

Cover for Fernando Pacheco-Torgal · Use of Recycled Plastics in Eco-efficient Concrete - Woodhead Publishing Series in Civil and Structural Engineering (Paperback Book) (2018)

Use of Recycled Plastics in Eco-... (2018)

Fernando Pacheco-Torgal

Cover for Philip Irving · Polymer Composites in the Aerospace Industry - Woodhead Publishing Series in Composites Science and Engineering (Paperback Book) (2019)

Polymer Composites in the Aerosp... (2019)

Cover for Chandra Sharma · Biointegration of Medical Implant Materials - Woodhead Publishing Series in Biomaterials (Paperback Book) (2019)

Biointegration of Medical Implan... (2019)

Cover for Vankar, Padma Shree (Research Advisor, Bombay Textile Research Association (BTRA), India) · New Trends in Natural Dyes for Textiles - The Textile Institute Book Series (Paperback Book) (2019)

New Trends in Natural Dyes for T... (2019)

Vankar, Padma Shree (Research Ad...

Cover for Xinyu Liu · Chalcogenide: From 3D to 2D and Beyond - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2019)

Chalcogenide: From 3D to 2D and ... (2019)

Cover for Pathria, R.K. (Theoretical Physicist, University of California, San Diego, USA) · Statistical Mechanics (Paperback Book) (2021)

Statistical Mechanics (2021)

Pathria, R.K. (Theoretical Physi...

Cover for Azzam Taktak · Clinical Engineering: A Handbook for Clinical and Biomedical Engineers (Hardcover Book) (2019)

Clinical Engineering: A Handbook... (2019)

Cover for Ming L. Wang · Sensor Technologies for Civil Infrastructures: Volume 1: Sensing Hardware and Data Collection Methods for Performance Assessment - Woodhead Publishing Series in Civil and Structural Engineering (Paperback Book) (2022)

Sensor Technologies for Civil In... (2022)

Cover for Kent Harries · Nonconventional and Vernacular Construction Materials: Characterisation, Properties and Applications - Woodhead Publishing Series in Civil and Structural Engineering (Paperback Book) (2019)

Nonconventional and Vernacular C... (2019)

Cover for Ming L. Wang · Sensor Technologies for Civil Infrastructures: Volume 2: Applications in Structural Health Monitoring - Woodhead Publishing Series in Civil and Structural Engineering (Paperback Book) (2022)

Sensor Technologies for Civil In... (2022)

Cover for Napolitano, Antonio (Full Professor of Telecommunications at the University of Napoli Parthenope (Italy).) · Cyclostationary Processes and Time Series: Theory, Applications, and Generalizations (Paperback Book) (2019)

Cyclostationary Processes and Ti... (2019)

Napolitano, Antonio (Full Profes...

Cover for Eric Tournié · Mid-infrared Optoelectronics: Materials, Devices, and Applications - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2019)

Mid-infrared Optoelectronics: Ma... (2019)

Cover for Nathalie Bourgougnon · Seaweeds Around the World: State of Art and Perspectives - Advances in Botanical Research (Hardcover Book) (2020)

Seaweeds Around the World: State... (2020)

Nathalie Bourgougnon

Cover for Ulrich Erle · Development of Packaging and Products for Use in Microwave Ovens - Woodhead Publishing in Materials (Paperback Book) (2020)

Development of Packaging and Pro... (2020)

Cover for Fu-Zhai Cui · Mineralized Collagen Bone Graft Substitutes - Woodhead Publishing Series in Biomaterials (Paperback Book) (2019)

Mineralized Collagen Bone Graft ... (2019)

Cover for Hong, Won-Kee (Dr. Won-Kee Hong is a professor of Architectural Engineering at Kyung Hee University, South Korea.) · Hybrid Composite Precast Systems: Numerical Investigation to Construction - Woodhead Publishing Series in Civil and Structural Engineering (Paperback Book) (2019)

Hybrid Composite Precast Systems... (2019)

Hong, Won-Kee (Dr. Won-Kee Hong ...

Cover for Menghe Miao · Carbon Nanotube Fibres and Yarns: Production, Properties and Applications in Smart Textiles - The Textile Institute Book Series (Paperback Book) (2019)

Carbon Nanotube Fibres and Yarns... (2019)

Cover for Huntington, Andrew S. (Voxtel Inc, Beaverton, Oregon, USA) · InGaAs Avalanche Photodiodes for Ranging and Lidar - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2020)

InGaAs Avalanche Photodiodes for... (2020)

Huntington, Andrew S. (Voxtel In...

Cover for Chen · Emerging Natural and Tailored Nanomaterials for Radioactive Waste Treatment and Environmental Remediation: Principles and Methodologies - Interface Science and Technology (Paperback Book) (2019)

Emerging Natural and Tailored Na... (2019)

Cover for Kalam Azad · Advances in Eco-Fuels for a Sustainable Environment - Woodhead Publishing Series in Energy (Paperback Book) (2018)

Advances in Eco-Fuels for a Sust... (2018)

Cover for Robertson, Guy (Justice Institute of British Columbia, Canada; Adjunct professor, University of British Columbia; Senior instructor, Langara College) · Front-Line Librarianship: Life on the Job for Today's Librarians - Chandos Information Professional Series (Paperback Book) (2018)

Front-Line Librarianship: Life o... (2018)

Robertson, Guy (Justice Institut...

Cover for Lo, Patrick (Associate Professor, Faculty of Library, Information and Media Science, University of Tsukuba, Japan) · Conversations with Leading Academic and Research Library Directors: International Perspectives on Library Management - Chandos Information Professional Series (Paperback Book) (2018)

Conversations with Leading Acade... (2018)

Lo, Patrick (Associate Professor...

Cover for Latarche, Malcolm (Freelance Journalist and former editor of Fairplay Solutions (monthly shipping technical magazine). Lead editor ShipInsight Guides (www.shipinsight.com), Norfolk, UK) · Pounder's Marine Diesel Engines and Gas Turbines (Paperback Book) (2020)

Pounder's Marine Diesel Engines ... (2020)

Latarche, Malcolm (Freelance Jou...

Cover for Finlay, Warren H. (University of Alberta, Edmonton, Canada) · The Mechanics of Inhaled Pharmaceutical Aerosols: An Introduction (Paperback Book) (2019)

The Mechanics of Inhaled Pharmac... (2019)

Finlay, Warren H. (University of...

Cover for Jennifer Keiser · Highlighting Operational and Implementation Research for Control of Helminthiasis (Hardcover Book) (2019)

Highlighting Operational and Imp... (2019)

Jennifer Keiser

Cover for Metabolism, Structure and Function of Plant Tetrapyrroles: Introduction, Microbial and Eukaryotic Chlorophyll Synthesis and Catabolism (Hardcover Book) (2019)

Metabolism, Structure and Functi... (2019)

Cover for Duinkerken, Wyoma van (Director, Joint Library Facility, Texas A&M University Libraries, TX, USA) · Library Storage Facilities: From Planning to Construction to Operation - Chandos Information Professional Series (Paperback Book) (2018)

Library Storage Facilities: From... (2018)

Duinkerken, Wyoma van (Director,...

Cover for Eslami, Abolfazl (Professor, Department of Geotechnical Engineering, Amirkabir University of Technology, Tehran, Iran) · Piezocone and Cone Penetration Test (CPTu and CPT) Applications in Foundation Engineering (Paperback Book) (2019)

Piezocone and Cone Penetration T... (2019)

Eslami, Abolfazl (Professor, Dep...

Cover for Sabina Spiga · Memristive Devices for Brain-Inspired Computing: From Materials, Devices, and Circuits to Applications Computational Memory, Deep Learning, and Spiking Neural Networks - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2020)

Memristive Devices for Brain-Ins... (2020)

Cover for Laraia, Michele (Independent Consultant, Rome, Italy) · Beyond Decommissioning: The Reuse and Redevelopment of Nuclear Installations - Woodhead Publishing Series in Energy (Paperback Book) (2019)

Beyond Decommissioning: The Reus... (2019)

Laraia, Michele (Independent Con...

Cover for Advanced Biofuels: Applications, Technologies and Environmental Sustainability - Woodhead Publishing Series in Energy (Paperback Book) (2019)

Advanced Biofuels: Applications,... (2019)

Cover for Advances in Delay-Tolerant Networks (DTNs): Architecture and Enhanced Performance - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2020)

Advances in Delay-Tolerant Netwo... (2020)

Cover for Bahram Nabet · Photodetectors: Materials, Devices and Applications - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2023)

Photodetectors: Materials, Devic... (2023)

Cover for Pierre Frendo · Regulation of Nitrogen-Fixing Symbioses in Legumes (Hardcover Book) (2020)

Regulation of Nitrogen-Fixing Sy... (2020)

Cover for Tu Le Manh · Barkhausen Noise for Non-destructive Testing and Materials Characterization in Low Carbon Steels - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2020)

Barkhausen Noise for Non-destruc... (2020)

Cover for Apte, Vivek (formerly Fire Science and Technology Laboratory, CSIRO, Australia) · Flammability Testing of Materials Used in Construction, Transport, and Mining - Woodhead Publishing Series in Civil and Structural Engineering (Paperback Book) (2021)

Flammability Testing of Material... (2021)

Apte, Vivek (formerly Fire Scien...

Cover for Ferroelectric Materials for Energy Harvesting and Storage - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2020)

Ferroelectric Materials for Ener... (2020)

Cover for Ravindra, Nuggehalli (Department of Physics, New Jersey Institute of Technology, USA) · Microbolometers: Fundamentals, Materials, and Recent Developments - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2021)

Microbolometers: Fundamentals, M... (2021)

Ravindra, Nuggehalli (Department...

Cover for Computational Retinal Image Analysis: Tools, Applications and Perspectives - The MICCAI Society book Series (Paperback Book) (2019)

Computational Retinal Image Anal... (2019)

Cover for Dipper, Frances (Author, Lecturer and Independent Marine Consultant) · Elements of Marine Ecology (Paperback Book) (2022)

Elements of Marine Ecology (2022)

Dipper, Frances (Author, Lecture...

Cover for Bessarabov, Dmitri (Director, DST National Center of Competence, HySA Infrastructure, North-West University and CSIR, South Africa) · PEM Water Electrolysis - Hydrogen and Fuel Cells Primers (Paperback Book) (2018)

PEM Water Electrolysis - Hydroge... (2018)

Bessarabov, Dmitri (Director, DS...

Cover for Manuel Va¡zquez · Magnetic Nano- and Microwires: Design, Synthesis, Properties and Applications - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2020)

Magnetic Nano- and Microwires: D... (2020)

Manuel Va¡zquez

Cover for Abdul Samad Khan · Handbook of Ionic Substituted Hydroxyapatites - Woodhead Publishing Series in Biomaterials (Paperback Book) (2019)

Handbook of Ionic Substituted Hy... (2019)

Abdul Samad Khan

Cover for Instrumentation and Control Systems for Nuclear Power Plants - Woodhead Publishing Series in Energy (Paperback Book) (2023)

Instrumentation and Control Syst... (2023)

Cover for Advances in Insect Physiology (Hardcover Book) (2019)

Advances in Insect Physiology (2019)

Cover for Human Factors in the Nuclear Industry: A Systemic Approach to Safety - Woodhead Publishing Series in Energy (Paperback Book) (2020)

Human Factors in the Nuclear Ind... (2020)

Cover for Salinity Gradient Heat Engines - Woodhead Publishing Series in Energy (Paperback Book) (2021)

Salinity Gradient Heat Engines -... (2021)

Cover for Graphene: Properties, Preparation, Characterization and Applications - Woodhead Publishing Series in Electronic and Optical Materials (Paperback Book) (2021)

Graphene: Properties, Preparatio... (2021)

Cover for Sangamesh Kumbar · Artificial Protein and Peptide Nanofibers: Design, Fabrication, Characterization, and Applications - Woodhead Publishing Series in Biomaterials (Paperback Book) (2020)

Artificial Protein and Peptide N... (2020)

Sangamesh Kumbar

Cover for Webb · Annual Reports on NMR Spectroscopy (Hardcover Book) (2019)

Annual Reports on NMR Spectroscopy (2019)