Vol. 14 No. 1 (2025): January - June 2025

Research article

• 

  A study of the shock wave behavior using the shadowgraph technique

  Wuttichai Sittiwong

  12-24

  • PDF
• 

  Determination of cadmium in paper for food contact by inductively coupled plasma mass spectrometry

  Nootjarin Phonhong, Netsirin Gissawong, Warunrat Buranakul, Veerapat Ramanee, Jitwilai Waluvanarak, Weera Suanthaisong

  25-39

  • PDF
• 

  Active substances in cleaning and disinfecting products from Thailand's online market in 2023

  Neungrutai Saesaengseerung, Darat Phathanakunkamchon, Thanatcha Tongraya, Kannika Deevinij, Khanit Panchoowong

  40-51

  • PDF
• 

  Method validation for determination of piperine in black pepper by high performance liquid chromatography

  Thidarat Kruatian, Pattamaporn Jitpreeda, Subongkoch Subtaeng

  52-65

  • PDF
• 

  The effect of extraction methods and Centella asiatica species on yield, total phenolic content and antioxidant activity of extract

  Rewadee Meesat, Apiratree Srithon, Yuttasak Subkaree

  66-78

  • PDF
• 

  Quality assurance for the production and performance testing of alcohol gel for hand sanitizers

  Nusara Yinyom, Siriwan Wichai

  79-90

  • PDF