Visual tracking integrates the technology of image processing and pattern recognition, etc., which has a lot of potential applications, such as automatic driving, safety monitoring, etc. This paper analyzes the advant...
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For every coating it is critical that the coatings are sufficiently durable to withstand practical applications and that the films adhere well enough to the substrate. In this paper the nanotribological, nanomechanica...
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For every coating it is critical that the coatings are sufficiently durable to withstand practical applications and that the films adhere well enough to the substrate. In this paper the nanotribological, nanomechanical and interfacial properties of 15-100 nm thick atomic layer deposited (ALD) TiO2 coatings deposited at 110-300 degrees C were studied using a novel combination of nanoscratch and scanning nanowear testing. Thin film wear increased linearly with increasing scanning nanowear load. The film deposited at 300 degrees C was up to 58 +/- 11 %-points more wear-resistant compared to the films deposited at lower temperatures due to higher hardness and crystallinity of the film. Amorphous/nanocrystalline composite structure with agglomerated crystallites was observed with TiO2 deposited at 200 degrees C and the agglomerates were up to 37 +/- 10%-points more wear-resistant than the amorphous/nanocrystalline matrix. All of the tested films had excellent interfacial properties and no delamination was observed with the films outside of the scanned regions. These findings may prove useful in the development of tribological and mechanical characterization methods, and in developing thin film materials with enhanced properties tailored to their function. This will also help in the development and tuning of ALD processes. (C) 2015 Elsevier B.V. All rights reserved.
Imaging detection of composite plates is presented based on reconstruction algorithm for the probabilistic inspection of damage (RAPID) and double-turn coil omnidirectional shear-horizontal wave magnetostrictive patch...
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Thallium (Tl) is a highly toxic rare element. Severe Tl poisoning can cause neurological brain damage or even death. The present study was designed to investigate contents of Tl and other associated heavy metals in ar...
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Thallium (Tl) is a highly toxic rare element. Severe Tl poisoning can cause neurological brain damage or even death. The present study was designed to investigate contents of Tl and other associated heavy metals in arable soils and twelve common vegetables cultivated around a steel plant in South China, a newly-found initiator of Tl pollution. Potential health risks of these metals to exposed population via consumption of vegetables were examined by calculating hazard quotients (HQ). The soils showed a significant contamination with Tl at a mean concentration of 1.34 mg/kg. The Tl levels in most vegetables (such as leaf lettuce, chard and pak choy) surpassed the maximum permissible level (0.5 mg/kg) according to the environmental quality standards for food in Germany. Vegetables like leaf lettuce, chard, pak choy, romaine lettuce and Indian beans all exhibited bioconcentration factors (BCF) and transfer factors (TF) for Tl higher than 1, indicating a hyperaccumulation of Tl in these plants. Although the elevated Tl levels in the vegetables at present will not immediately pose significant non-carcinogenic health risks to residents, it highlights the necessity of a permanent monitoring of Tl contamination in the steel-making areas. (C) 2017 Elsevier Ltd. All rights reserved.
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