Engineering
Methane
100%
Pretreatment
89%
Biogas
56%
Response Surface Methodology
53%
Welds
47%
Anaerobic Digestion
46%
Energy Engineering
46%
Vapor Compression
45%
Graphene
43%
Electric Power Utilization
42%
Process Parameter
39%
Experimental Investigation
34%
Coefficient of Performance
30%
Energy Content
30%
Vapor Compression System
30%
Refrigeration System
29%
Renewable Energy
29%
Friction Stir Welding
29%
Biomethane
28%
Biogas Production
28%
Model Prediction
26%
Size Reduction
25%
Fuzzy Inference System
24%
Energy Conservation
24%
Rotational Speed
23%
Global Warming
23%
Cooling Capacity
22%
Evaporator
21%
Nanoparticle
21%
Compression Refrigeration System
20%
Microstructure
19%
Energy Efficiency
19%
Energy Source
19%
Artificial Neural Network Model
19%
Heat Input
19%
Briquetting
18%
Numerical Model
17%
Energy Performance
17%
Irreversibility
17%
Longitudinal Crack
17%
Vehicle Suspensions
17%
Stainless Steel
17%
Carbon Nanotube
17%
Wire Electrical Discharge Machining
17%
Comparative Analysis
17%
Rotary Kiln
17%
Municipal Wastewater Treatment
17%
Biogas
17%
Thermocouple
17%
Anaerobic Digestion
17%
Material Science
Aluminum
68%
Nanoparticle
54%
Friction Stir Welding
37%
Feedstock
37%
Comminution
34%
Titanium
30%
Scanning Electron Microscopy
28%
Microhardness
26%
Surface (Surface Science)
26%
Titanium Carbide
26%
Composite Material
26%
Stainless Steel
26%
Morphology
26%
X-Ray Diffraction
24%
Mechanical Strength
21%
Fossil Fuel
18%
Ultimate Tensile Strength
17%
Wire Electrical Discharge Machining
17%
Titanium Alloys
17%
Creep
17%
Fracture Toughness
17%
Nanocomposite
17%
Density
16%
Welding
16%
Machining
15%
Residual Stress
13%
Welded Joint
12%
Microstructural Evolution
11%
Metal Matrix Composite
10%
Solidification
10%
Powder
10%
Electron Microscopy
10%
Machinability
10%
Shaft
10%
Composite Material
9%
Electrical Resistivity
8%
Activation Energy
8%
Computational Fluid Dynamics
8%
Natural Fiber
8%
Thermal Analysis
8%
Plating
8%
Heat Treatment
8%
Fourier Transform Infrared Spectroscopy
8%
Silicon Carbide
8%
Bituminous Coal
8%
Optimization Model
8%
Polyamide
8%
Crystalline Material
8%
Magnesium
8%
Mechanical Testing
8%
Keyphrases
R600a
26%
Arachis Hypogea Shells
26%
Refrigerant
24%
Refrigerator System
20%
Sample Pretreatment
19%
Performance Evaluation
17%
Upflow Anaerobic Sludge Blanket Reactor
17%
Fluoride Materials
17%
Biomethane Yield
17%
Groundnut Shell
17%
Graphene Nanolubricant
17%
Xyris
17%
Ficus Capensis
17%
High-speed Machining
17%
Methane Yield
17%
Heat Input
14%
Combined Pretreatment
11%
Vapour Compression Refrigerator
10%
Yield Optimization
10%
Nanoparticle Additives
10%
Refrigeration
10%
Drop-in Replacement
10%
Lubricant
10%
Oxidative Pretreatment
10%
Household Refrigerator
10%
Municipal Wastewater
8%
Energetic Performance
8%
Rotor Fault Diagnosis
8%
Hydraulic Pump Motor
8%
MISER
8%
Hybrid Hydraulic Vehicle
8%
Hybrid Particle Swarm Optimization
8%
Metal Transfer Mode
8%
Adaptive Neuro-fuzzy Inference System
8%
Macroalgae Biomass
8%
Sustainable Enhancement
8%
Defect Behavior
8%
ASME B31G
8%
Heat Effect
8%
R600
8%
Wood Glue
8%
Experimental Performance
8%
Friction Stir Welding
8%
Capillary Tube Length
8%
Polyvinylidene Fluoride
8%
Coconut Fiber
8%
Vapor Compression Refrigeration System
8%
Content Comparison
8%
Nanorefrigerant
8%
Vinasse
8%
