نتایج جستجو برای: plastic composition
تعداد نتایج: 313043 فیلتر نتایج به سال:
Now-a-days everyone is aware of the disadvantage Plastic and its various products. Around 300-400 tonnes plastic waste generated every year. This also results in man environmental pollution as well human health issues. But, this doesn’t mean that we completely don’t need plastic. It has much application field composites which trending a good alternative wood. Composite materials have significan...
plastics, one of the most abundant materials in the world today, are one of the main sources of pollution. people’s perception of using and disposing plastic bags is primordial as they tend to be a major part of household solid waste. this study aims to determine community’s perception of usage and disposal of plastic bags in eastern ethiopia. a quantitative cross-sectional study has been condu...
The co-pyrolysis of various biomasses mixed with two types plastic waste was investigated in this study. Mixture M1 consisted 30% m/m styrene–butadiene rubber (SBR), 40% polyethylene terephthalate (PET), and polypropylene (PP). M2 PET, PP, acrylonitrile–butadiene–styrene copolymer (ABS). SBR, ABS, PP used study were from the automotive industry, while PET originated scrap bottles. Co-pyrolysis ...
Simultaneous thermogravimetry-mass spectrometry studies of a pyrolytic decomposition of mixtures of different plastic wastes/coking coal were carried out. The investigation was performed at temperatures up to 1000oC in a helium atmosphere under dynamic conditions at a heating rate of 25 oC/min. Five thermoplastics, commonly found in municipal wastes: low density polyethylene (LDPE), high densit...
Marine debris is one of the global problems due to human activities. One biggest loads marine in city Jakarta, namely Pluit Emplacement. Emplacement a special location for managing with largest burden discharged from urban areas. This study analyses aquatic waste's generation or debris, composition, and recycling potential at The research process starts formulating problem, conducting literatur...
OBJECTIVE To evaluate the degree of perception of laypersons, professionals, and dental students, regarding the aesthetic appearance of the smile in cases of gingival plastic surgery of the maxilla for correction of a gingival smile, by examining alterations in photographs. MATERIALS/METHODS Alterations were made to an extraoral front-view-photograph of a gingival smile in normal occlusion, b...
BACKGROUND Self-expanding metal and plastic esophageal stents (SEMS and SEPS, respectively) are used in conjunction with chemoradiation for palliation of malignant dysphagia. To date, the dosimetric effects of stents undergoing proton radiotherapy are not known. STUDY AIM To investigate the proton radiotherapy dose perturbations caused by esophageal stents of varying designs and materials und...
Microplastic contamination in agroecosystems is becoming more prevalent due to the direct use of plastics agriculture (e.g., mulch films) and via amendments compost, biosolids application). Long-term agricultural microplastic pollution could lead soil degradation reduced crop health slow conventional creating legacy plastic. Biodegradable are commonly being used, both domestically agriculture, ...
Marine litter is a major source of pollution in the Mediterranean basin, but despite legislative requirements, scant information is available for the ongoing assessment of this threat. Using higher size classes as proxy for litter distribution, this study gave a synoptic estimation of the amount, composition, and distribution of floating macro-litter in the Mediterranean. The average amount of ...
Peptidoglycan (PGN) is ubiquitous in nearly all bacterial species. The PGN sacculus protects the cells against their own internal turgor making PGN one of the most important targets for antibacterial treatment. Within the last sixty years PGN composition has been intensively studied by various methods. The breakthrough was the application of HPLC technology on the analysis of muropeptides. Howe...
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