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Sonmez and Hahn studied heat transfer and stress in LOM to understand the effect of process parameters on the resulting stress and temperature distributions .
 concept or principle: heat transfer; machanical property: stress; manufacturing process: LOM; concept or principle: process parameters; machanical property: stress; process parameter: temperature; concept or principle: distributions
Please list all entity words in the text that fit the category.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} 
Answer:
 concept or principle: heat transfer; machanical property: stress; manufacturing process: LOM; concept or principle: process parameters; machanical property: stress; process parameter: temperature; concept or principle: distributions