List of Articles Open Access Article Abstract Page Full-Text 1 - Study of the Complexes of Thallium (I) and Potassium with Methotrexate Using UV, FT-IR Methods Open Access Article Abstract Page Full-Text 2 - Investigation about Lost Substances in Different Modern and Traditional Herbal Extraction Methods of Origanum Vulgare L Open Access Article Abstract Page Full-Text 3 - Comparison of residual chlorine in drinking water sources in urban and rural Ilam Open Access Article Abstract Page Full-Text 4 - The study of Changes in essential oil percentage, oil yield and percentage of medicinal plant extract Calendula officinalis L. impact and chemical fertilizers Open Access Article Abstract Page Full-Text 5 - Applying clean development mechanism in Iran gas pipeline using integrity management method Open Access Article Abstract Page Full-Text 6 - Study of mineral in gradient of medicinal plant yarrow (UrticadioicaL.) in Arasbaran region Open Access Article Abstract Page Full-Text 7 - Isolation and identification of essential oil compounds, sweat from Lavandula angustifolia Open Access Article Abstract Page Full-Text 8 - Benzaldehyde Degradation Using Ultrasound