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In this paper we report upon the combined effects of PBF parameters , including power and scan speed , in layer-by-layer manufacturing of gas atomized non-modulated ( NM ) Ni-Mn-Ga alloy .
 manufacturing process: PBF; concept or principle: parameters; process parameter: power; process parameter: scan speed; concept or principle: layer-by-layer; manufacturing process: gas atomized; material: alloy
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: PBF, parameters, power, scan speed, layer-by-layer, gas atomized, alloy 
Answer:
 manufacturing process: PBF; concept or principle: parameters; process parameter: power; process parameter: scan speed; concept or principle: layer-by-layer; manufacturing process: gas atomized; material: alloy