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Item Metadata only Adsorption of copper(II) and zinc(II) in 0.01 M Hydrochloric acid solution by chitosans(Mahidol University. Mahidol University Library and Knowledge Center, 2000) Pongdej Ekwanijcha; Duangjai Nacapricha; Prapin WilairatItem Metadata only Capacities of some chitosans for adsorption with iron (II) in 0.01 M hydrochloric solution(Mahidol University. Mahidol University Library and Knowledge Center, 2000) Wanravee Chantore; Duangjai Nacapricha; Prapin Wilairat; Waret VeerasaiPublication Metadata only Delayed sequelae of hydrochloric acid ingestion(1999-06-01) Chumpon Wilasrusmee; Vorachai Sirikulchayanonta; Wiwat Tirapanitch; Mahidol UniversityHydrochloric acid is the active ingredient in common toilet bowl cleaner agents used in Thailand but it is occasionally abused for suicidal attempts by ingestion. Clinicopathological description caused by this agent has rarely been mentioned... and no postoperative complication was found. This presentation is aimed to stimulate physicians to be aware of delayed complications of hydrochloric acid ingestion and long term follow-up is required even though the initial symptoms of the patients were minimal.Publication Metadata only Tryptamine as a corrosion inhibitor of mild steel in hydrochloric acid solution(2010-01-01) Pongsak Lowmunkhong; Dusit Ungthararak; Pakawadee Sutthivaiyakit; Mahidol UniversityThe inhibitor effect of tryptamine on the corrosion of mild steel in 0.5 M hydrochloric acid at 30 °C was investigated using linear polarization, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniquesItem Metadata only The Demineralization of Sardinella gibbosa Scales Using Hydrochloric Acid and High-Pressure Carbon Dioxide(2024-08-01) Saleah F.; Netramai S.; Kijchavengkul T.; Wipatanawin A.; Rosales C.K.; Saleah F.; Mahidol University. For the strong acid treatment using hydrochloric acid (HCl), the effects of HCl concentrations (0.2-1.5 M) and treatment times (30-120 min) on demineralization efficiency were assessed. The results from RSM indicated that HCl concentration was the only treatmentPublication Metadata only Titanium and iron dissolutions from ilmenite by acid leaching and microbiological oxidation techniques(2013-05-01) Woranart Jonglertjunya; Theeraporn Rubcumintara; Mahidol UniversityThis research was concerned with the solubility of ilmenite (Tin Tailing) in acids (sulfuric, hydrochloric, oxalic and citric) and bioleaching by Aspergillus niger, Penicillium citrinum and Bacillus megaterium. Ilmenite concentrate was soluble in 1....5 M sulfuric acid and 1.5 M hydrochloric acid solutions at 90 °C. However, improved leaching was obtained with 8 and 12 M sulfuric acid solutions. The chemical leaching results for different stirring speeds showed that a speed of 750 rpm was favourableItem Metadata only Pharmacological Effects of Thunbergia laurifolia Lindl. Extract on Gastric Ulceration in Rats(2025-04-01) Chularojanamontri L.; Chiranthanat N.; Jaijoy K.; Wattanapitayakul S.; Nanna U.; Rojsanga P.; Fuangfoo T.; Sireeratawong S.; Chularojanamontri L.; Mahidol Universityfor the study. The anti-ulcerogenic effects were evaluated using four distinct in vivo models: ethanol/hydrochloric acid administration, restraint water immersion stress, indomethacin administration, and pylorus ligation. Administration of TL extract at doses... of 100, 200, and 400 mg/kg significantly reduced gastric ulcer formation induced by ethanol/hydrochloric acid as well as restraint water immersion stress. At doses of 200 and 400 mg/kg, the extract significantly reduced indomethacin-induced ulcerPublication Metadata only Effect of acid during synthesis on the agglomerated strength of TiO 2 nanoparticles(2009-10-26) Sarayut Termnak; Wannapong Triampo; Darapond Triampo; Mahidol Universityhydrochloric acid was added during the synthesis. With no acid, both anatase and brookite structures were formed. Transmission electron microscopy (TEM) showed that the primary particles from both the acid and no-acid routes were of approximately the same size.... A particle-size analyzer equipped with an ultrasonic generator showed, however, that the aggregates of acid NPs were more difficult to break apart than those of the no-acid NPs. Gel formation was used to explain the difference in strength by whichPublication Metadata only Morphological Properties of Acid-modified Tapioca Starch(2000-09-01) Napaporn Atichokudomchai; Sujin Shobsngob; Saiyavit Varavinit; Mahidol UniversityHighly crystalline tapioca starch was prepared by partial hydrolysis of tapioca starch in hydrochloric acid at room temperature for various lengths of time. The crystallinity of the starch increased while its amylose content decreased... with increasing reaction time. Scanning electron micrographs of these natural and highly crystalline starches were taken in order to study the morphological changes and mode of acid attack during hydrolysis. Exocorrosion all over the surface was observed after 96Publication Metadata only Reactive surface treatment for calcium carbonate filler in polypropylene(1999-01-01) Arunee Tabtiang; Richard Venables; Mahidol Universityacrylate. Direct evidence for transfer grafting between the calcium acrylate and the polypropylene in the reactive coating was obtained through selective dissolution of the matrix phase and filler with hot xylene and dilute hydrochloric acid, respectively...Calcium carbonate has been modified with three surface modifying systems based upon stearic acid, acrylic acid and a reactive coating comprising acrylic acid with dicumyl peroxide through dry blending. Polypropylene homopolymer was compounded