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Publication Metadata only Toughness and morphology of radiation-crosslinked natural rubber modified polystyrene(2003-01-01) P. Aiamsen; U. Paiphansiri; S. Sangribsub; D. Polpanich; P. Tangboriboonrat; Mahidol Universitywith that of unmodified PS. The impact resistance of HIPS based on RVNR was further enhanced by addition of 10% of polystyrene-block-polyisoprene-block-polystyrene copolymer. A mesh structure of all crosslinked rubber particles containing polystyrene and long crazes...γ-Radiation vulcanized natural rubber (RVNR)/phase transfer/suspension polymerization technique was used to prepare high-impact polystyrene (HIPS) in bead form. The high notched Izod impact resistance of HIPS based on RVNR was observed and comparedItem Metadata only Green productivity and value chain analysis to enhance sustainability throughout the passenger car tire supply chain in Thailand(2023-09-01) Buadit T.; Ussawarujikulchai A.; Suchiva K.; Papong S.; Rattanapan C.; Mahidol Universityand smoke sheet rubber. Cup lump and STR20 block rubber, in contrast, offered the lowest GP. Overuse of chemical fertilizer in the cup lump production, water consumption in the STR20 production and steam consumption in the tire manufacturing process were key... issues selected for developing CT options from value chain analysis. The chosen options are to fertilize following the Rubber Research Institute recommendations, recycle used or treated water in the rubber industry and lower mold open time among tirePublication Open Access ความรอบรู้ทางสุขภาพด้านอาชีวอนามัยและพฤติกรรมความปลอดภัยในการทํางานของพนักงานฝ่ายปฏิบัติการ: กรณีศึกษาโรงงานอุตสาหกรรมยางแท่งแห่งหนึ่งในประเทศไทย(2565) ณัฐรัฐ ไมมะหาด; อัมรินทร์ คงทวีเลิศ; เด่นศักดิ์ ยกยอน; สุธรรม นันทมงคลชัย; Nattarat Maimahad; Amarin Kongtawelert; Densak Yogyorn; Sutham Nanthamongkolchai; มหาวิทยาลัยมหิดล. คณะสาธารณสุขศาสตร์. ภาควิชาอาชีวอนามัยและความปลอดภัย; มหาวิทยาลัยมหิดล. คณะสาธารณสุขศาสตร์. ภาควิชาอนามัยครอบครัวThailand is the number one producer and exporter of rubber in the world. The proportion of the export volume of block rubber products compared to all rubber products in 2020 was 46.43%. This sector has the tendency to expand continuously. Promoting... of the operating staff in a block rubber factory in Thailand, a total of 270 people. The data were collected by questionnaires. The descriptive variables were analyzed by descriptive statistics and the correlation was determined by t-test, one-way ANOVA testItem Metadata only Hollow natural rubber latex particles as bio-based alternative white pigment for coating applications(2022-11-15) Promlok D.; Sonongbua K.; Wilepsuwan M.; Suteewong T.; Tangboriboonrat P.; Mahidol UniversityDue to the broad particle size distribution as well as non-spherical shape of natural rubber (NR) latex particles, the non-collapse hollow NR latex particles (HL-NRPs) with well-defined void structure were developed aiming to use as an eco-friendly... acid for non-rubber substances. Since the multiple light scattering inside the hollow structure could enhance their refractive index, the optical performance of HL-NRPs as a low-density opacifying agent in poly(vinyl alcohol) matrix, was examined usingItem Metadata only Effects of vitamin E on the development of cholangiocarcinoma induced by combined nitrite and aminopyrine(Mahidol University. Mahidol University Library and Knowledge Center, 2024) Pakasit Pratoomtone; Witaya Thamavit; Somnate Boonpucknavig; Galayanee Doungchaweeproducts, rubber industry, leather industry, etc. There are numerous reports showing that cancer can be induced by endogenous nitrosation from the reaction between nitrite and susceptible amine in the stomach. However, endogenous nitrosation can be blocked...Many nitrosamines are potent carcinogens in more than 40 animals including subhuman primates and possibly in man. They are present in foods, foodstuffs, beer and other beverages, tobacco and tobacco smoke, cosmetics, drugs, pesticides, rubberPublication Open Access The Cities of Frankenstein: Graphic Scenarios of Looming Urban Horror(2020) Alan Marshall; Mahidol University. Faculty of Social Sciences and HumanitiesThe famous literary work Frankenstein, by Mary Shelley (1818), seems to forecast the potential future of urban life in the Modern Age which is replete with an ongoing environmental crisis. Using a theory of critique and forecast as established by the Literary Method of Urban Design, some of the core thematic lessons of Frankenstein are used as pathways to predict the character of European cities as they have developed and evolved under the stresses of ecological disaster over the near future (up to about twenty or thirty years hence). These core Frankenstein themes are as follows: 1) technological hubris, 2) alienation, 3) monstrosity, and 4) abandonment. In this paper, these themes are each overlaid with some of the many socio-environmental problems now challenging a set of fourteen sample cities (each drawn from the original Frankenstein novel) utilizing both scenario art and interpretive eco-ethical thought.Publication Open Access Structural Durability Assessment of Stilt Houses to Flash Flooding: Case Study of Flash Flood-Affected Sites in Thailand(2020) Olarn Charoenchai; Kampanad Bhaktikul; Mahidol University. Faculty of Environment and Resource StudiesThe ‘stilt house’ is found in many flood-prone areas and represents local wisdom regarding building construction to coexist with floodwaters. Most academic research projects have studied stilt houses based on two types of flood: inundation and coastal flooding. The study of pillar houses in flash floods is very limited. This research investigated whether the main structure of a stilt house couldwithstand strong watercurrentto determine the suitability of the stilt house for flash flood sites. The study explored the physical appearance of stilt houses in five flash flood areas in Thailand. The styles of stilt houses in each area were simplified to generate models andto then test their tolerance toward moving water. The main findings were: 1) the main structure of the stilt house can resist flood loads at 1.00 m depth with a waterflow speed at 3.05 m/s; 2) the most vulnerable points on the main structure if struck by more rapid, deeper flows of water are the base of the column and the joint between the column and beams; and 3) the horizontal or diagonal bracing members perpendicular to the flow and not above the flood level become water blockades that increase the reactive force to the main structure.