The 4th International Conference on Science and Technology Applications

<ul><li>Preface</li><li>Chapter 1: Polymers and Composites</li><li>The Effect of Phosphotungstic Acid Filled on Carboxymethyl Cellulose/Polyvinyl Alcohol Matrix as the Polymer Electrolyte Membrane</li><li>The Effect of Drying Temperature Variations of Biodegradable Plastic Porang (<i>Amorphophallus oncophyllus</i>) with Glycerol Plasticizer on Mechanical and Thermal Properties</li><li>Mechanical Characterization Of Composites Reinforced By Corn Husk Fiber (<i>Zea mays</i>) Waste and Coffee Husk Fiber (<i>Coffea arabica L</i>)</li><li>Chapter 2: Structural Metals Processing</li><li>Microstructure and Hardness Properties of Hardfacing Overlays Deposited by Shielded Metal Arc Welding on Low Carbon Steel Plate</li><li>Chapter 3: Materials for Optical Applications</li><li>The Effect of Alkali-Fluoride on the Photoluminescence Properties of Tb3+ Doped on Phosphate Glass Medium</li><li>The Effect of NaF on the Photoluminence Properties of Sammarium Ion Doped on Fluoro-Borophosphate Glass Medium</li><li>Physical and Stimulated Emission Cross Section (SEC) Properties of Nd³⁺ Doped Lithium Fluorophosphate (LFP) Glasses</li><li>Chapter 4: Materials for Biomedical Applications</li><li>Influence of UDMA and TEGDMA Concentration on Morphology, Bonding, Thermal and Mechanical Properties of UV-Cured Resin</li><li>PVA/Chitosan Composite Electrospun Nanofiber Membranes for Wound Dressing and Antibacterial Efficacy</li><li>Chapter 5: Biotechnology and Environmental Protection</li><li>The Influence of Vacuum Pressure Heating Treatment on the Characteristic of Crude Palm Oil for Alternative Mineral Oil Insulator</li><li>Characterization of Two Purified Amylase Produced from <i>Aspergillus niger</i> ICP2 and its Immobilization Using Activated Carbon</li><li>Purification of an Extracellular Amylase Produced by <i>Aspergillus niger</i> ICP2 through Submerged Fermentation</li><li>The Effect of Zeolite Particle Size on Adsorption on Heavy Metals</li><li>Chapter 6: Plant Cultivation Technologies</li><li>Study of Several Hydroponics Nutrition for Curly Lettuce (<i>Lactuca sativa </i>L.) by Using Sensorized Hydroponics</li><li>Identification of Mycorrhizal Fungi Spore in Environment of Medan State University</li><li>Variety of Andaliman Plants in the Salon Dolok Area with Lumban Julu</li><li>Response Formation of Cattleya Orchid Leaf Callus (<i>Cattleya</i> Sp.) with the Addition of <i>2.4 Dichlorophenoxy Acetic Acid </i>and <i>6-Benzyl Amino Purine In Vitro</i></li><li>Chapter 7: Materials and Technologies in Construction</li><li>The Mapping of Road Pavement Structure around the Seismically Active Regions by Using Ground Penetrating Radar</li><li>Analysis of Coal Boiler Ash Content and Palm Shell Boiler Ash as a Cementitious Material in ECC Mortar</li><li>Manufacturing and Characterization of Polymer Concrete with Aggregate from Sand, Egg Shell and Sugarcane Waste with Epoxy Resin Binder as Sound Absorber</li><li>Chapter 8: Structural Mechanics</li><li>Simulation of the Response of Multi-Story Buildings with Concrete-Silica Fume and Concrete-Liquid Carbon Dioxide</li><li>Numerical Test of the Use of CO₂ in Multy Storey Building Structures during an Earthquake</li><li>Chapter 9: Nuclear Reactor Technologies</li><li>Evaluation on Structure, System, and Component Qualification in the Periodic Safety Review of RSG-GAS</li><li>Effect of Neutronic Parameters on the Cladding of the AP1000 MOX Fuel by Calculations Using MCNP Code</li><li>Chapter 10: Design of Thermal Energy Equipment</li><li>Thermal Design Approach of a Shell and Tube Heat Exchanger for Pyrolysis-Vapor Condensations</li><li>Thermoelectric Application of TEG1-241-1.4-1.2 for Power Generation from Low Temperature Geothermal Fluid</li><li>Chapter 11: Measurements and Sensors</li><li>IoT Based Fermentation Incubator for Automating UMKM Industry of Tempeh</li><li>Implementation of Three Types of Sensors for Monitoring Plant Development in Hydroponic Media</li><li>Classification of Beef and Lamb Patterns Using Conducting Polymer Sensor Series and Kohonen Algorithm Method</li><li>Chapter 12: Data and Image Processing</li><li>Medical Visualization from Hospital in Kupang City Based on Visualization Toolkits</li><li>Mobile Based Mosquito Larvae Recognition from Photo Image Using Convolutional Neural Network</li><li>Marine and Fishery Big Data System Model: A Knowledge Management System Perspective</li></ul>