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This paper investigates novel methods to improve the mechanical and temperature performance of plaster BJ additive manufactured parts via improved infiltration processes and incorporation of infiltrants with higher strength .
 concept or principle: investigates; application: mechanical; process parameter: temperature; concept or principle: performance; manufacturing process: BJ; application: additive manufactured parts; concept or principle: infiltration; machanical property: strength
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
 Entities: investigates, mechanical, temperature, performance, BJ, additive manufactured parts, infiltration, strength 
Answer:
 concept or principle: investigates; application: mechanical; process parameter: temperature; concept or principle: performance; manufacturing process: BJ; application: additive manufactured parts; concept or principle: infiltration; machanical property: strength