Rungruang Janta
School of Engineering and Technology, Walailak University, Nakhon Si Thammarat
Thailand

Jenjira Kaewrat
School of Engineering and Technology, Walailak University, Nakhon Si Thammarat
Thailand

Chuthamat Rattikansukha
School of Engineering and Technology, Walailak University, Nakhon Si Thammarat
Thailand

Surasak Sichum
School of Science, Walailak University, Nakhon Si Thammarat
Thailand