نتایج جستجو برای: plastics

تعداد نتایج: 6814  

2014
Giulia Bettas Ardisson Maurizio Tosin Marco Barbale Francesco Degli-Innocenti

The progressive application of new biodegradable plastics in agriculture calls for improved testing approaches to assure their environmental safety. Full biodegradation (≥90%) prevents accumulation in soil, which is the first tier of testing. The application of specific ecotoxicity tests is the second tier of testing needed to show safety for the soil ecosystem. Soil microbial nitrification is ...

2017
Tung-Yi Lin Trey T Pfeiffer Peter B Lillehoj

Thermoplastics are becoming a popular material for fabricating microfluidic devices and there is an increasing need for robust surface modification strategies. UV/ozone (UVO) treatment is a simple and effective method for making plastic surfaces more hydrophilic. Prior reports on the stability of UVO-treated plastics are limited to four weeks, which is not sufficient for applications requiring ...

2016
Seung-Whee Rhee Hyeong-Jin Choi

Compact Fluorescent Lamps (CFLs) are composed of glass, plastic, non-ferrous metal, ferrous metal, paper, plastic, rubber, and so on. In order to separate glass and plastic among CFLs components, air separation unit is applied using the difference in specific gravity. Since specific gravities of glass, plastic, non-ferrous metals, rubber, etc. were widely spread, it can be separated by the diff...

2013
Abbas Monzavi Hakimeh Siadat Mohammad Atai Marzieh Alikhasi Vahideh Nazari Sadigheh Sheikhzadeh

OBJECTIVE Little is known about the interaction of tissue conditioners and modeling plastics. This study evaluates the influence of a variety of commercial tissue conditioners on alteration of viscoelastic properties of modeling plastics. MATERIALS AND METHODS In this in vitro study, the dynamic viscoelastic properties of four commercially available tissue conditioners (TC), Visco-gel (VG), G...

2016
Kosuke Tanaka Hideshige Takada

We investigated microplastics in the digestive tracts of 64 Japanese anchovy (Engraulis japonicus) sampled in Tokyo Bay. Plastic was detected in 49 out of 64 fish (77%), with 2.3 pieces on average and up to 15 pieces per individual. All of the plastics were identified by Fourier transform infrared spectroscopy. Most were polyethylene (52.0%) or polypropylene (43.3%). Most of the plastics were f...

Journal: :Biotechnology advances 2008
Aamer Ali Shah Fariha Hasan Abdul Hameed Safia Ahmed

Lack of degradability and the closing of landfill sites as well as growing water and land pollution problems have led to concern about plastics. With the excessive use of plastics and increasing pressure being placed on capacities available for plastic waste disposal, the need for biodegradable plastics and biodegradation of plastic wastes has assumed increasing importance in the last few years...

2009
S. Ruotsalainen P. Laakso R. Penttilä H. Pantsar

A picosecond UV laser has been used to establish the material removal rate of plastics. Varied processing parameters include laser power, pulse frequency and scanning velocity. The wave length of the laser used was 355 nm. Scanning velocity varied between 100 to 800 mm/s and repetition frequency between 10 to 500 kHz. Materials for the experiments were generally used plastics, which were availa...

2007
Sun-Woo Kim Jungmin Park Eon-Seok Lee

Abstract: The creep performance of plastics is one of the main criteria for a variety of applications with strict dimensional stability needs, including electrical/electronic parts and various automotive applications. However obtaining or generating accurate creep data is very difficult for both resin suppliers and product designers because the creep property is time dependent, which means it t...

2006
Reinhold W. Lang

for Invited Talk at the First Annual Energy 2030 Conference, Abu Dhabi, UAE, November 1-2, 2006 1 Opportunities and Perspectives for Plastics in Coming Fossil Fuel and Solar Energy Scenarios Reinhold W. Lang 1, 2 1 Institute of Materials Science and Testing of Plastics, University of Leoben 2 Polymer Competence Center Leoben GmbH Franz-Josef-Straße 18, A-8700 Leoben, Austria [email protected]

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