จำนวน Repository ( 8 )
ความเป็นพิษร่วมกันระหว่างพอลิไซคลิกอะโรมาติกไฮโดรคาร์บอนกับไทรทรอนเอ็กซ์-100 หรือทวีน 80 ต่อการเจริญเติบโตระยะต้นกล้าของบานเย็นและกระเจี๊ยบเขียว
Use of synthetic surfactant is another choice to increase efficiency of polycyclic aromatic hydrocarbon (PAH) phytoremediation in soil. In this study the toxicity of soil contaminated with anthracene and fluoranthene at total concentration as 0 200 and 800 mg/kg in combination with 2 synthetic surfactants that were triton x-100 and tween 80 at concentration as 0 1 and 10 times of critical micelle concentration (CMC) on seedling growth of Hibiscus sabdariffa and Mirabilis jalapa. Both synthetic surfactants were watered separately on day 13 after inoculation and seedling growth were measured on day 20 after inoculation. The result shown that both H. sabdariffa and M. jalapa could grow in soil contaminated with anthracene and fluoranthene at all concentrations in combination with both synthetic surfactants. Tween 80 at 1 time of CMC were the least toxic to H. sabdariffa while toxicity of all surfactants on M. jalapa were not different. Decrease of plant growth depended on the increasing of PAH concentration in soil. With these reasons both plants were possible to use for PAH phytoremediation at total concentration 200 mg/kg in combination with synthetic surfactant
การออกแบบเครื่องทอผ้า ๒ ตะกอ เพื่อพัฒนาผลิตภัณฑ์ชุมชนเชิงพาณิชย์
The purposes of this research were to design and create the weaving machine to ๒-๔ heddles for small sample weaves were not over ๒๓ inches width. It brought to use striped woven community sample to develop commercial products by using the physical data of the local woven fabric and fabric size product samples were made for criteria of community design to hold dimensions of the weaving loom and the various components of its. The study found that woven fabrics were made in community products which mainly used hooks not exceed ๓ per strip. Repeat stripes as basic weaves structure ๑/๑ and diagonal stripes ๒/๑ weft density of ๖๐-๑๒๐ lines per inch. The fabric sample sizes for the presentation book were offering commercial customers with ๓ inches wide and ๒๕ inches long. ๒ heddles weaving loom were designed and developed by a comb ๓ inches wide in ๔ heddles. The heddle lift lever system was called elastic spring system the press lever heddle system was called Countermarches system weft thread transmission system and impacted them were woven worker type. Roll fabric system and loosed warp thread was adjustable by locking helical gear of warp thread roll. Two heddles weaving loom design to develop commercial community products can weave for ๓ pattern samples that were ๑/๑ plain weave pattern ๒/๑ diagonal striped pattern satin pattern ๒/๒ wings pattern zigzag twill pattern tortoise scales pattern and application of basic woven pattern. According to the experiment warp weave fabric size ๒๐/๒ and weft weave size ๒๐/๒ teeth comb # ๓๘ and #๒๐. When started warp thread placed ๑๓ inches into weft thread for ๒ threads interlock with teeth comb. It can be woven in ๑๓ inches width. The density of weft thread was ๖๐ threads per inch. It can choose woven patterns and bring to make the woven sample to commercial products. The ready woven fabrics were the crafts worthy of folk wisdom shawls by loom weaving and local fabric pattern.