نتایج جستجو برای: fishing boats
تعداد نتایج: 14384 فیلتر نتایج به سال:
Non-native invasive species are a major threat to biodiversity, especially in freshwater ecosystems. Freshwater ecosystems are naturally rather isolated from one another. Nonetheless, invasive species often spread rapidly across water sheds. This spread is to a large extent realized by human activities that provide vectors. For example, recreational boats can carry invasive species propagules a...
The Ciric and Khore Azini international wetland is the only unique habitat of Rizophora mucronata in Iran. Due to the limited access and difficulty of sampling, a study has not been done about the amount of heavy metal contamination in the plant community in this region. For this purpose, in 2016, 27 sediments, leaves and roots were sampled from 9 stations with three replications at each statio...
In Korea, fishing boats account for 65,452 out of 71,174 coastal ships, and aging ships are a leading cause environmental problems economic loss. To solve this problem, the government has enacted policy to promote development distribution vessels. Electric propulsion systems hybrid suggested as alternatives. However, study whether system is environmentally friendly, measuring performance conven...
Tributyltin (TBT) and other organotin compounds have been restricted for use on leisure boats since 1989 in the EU. Nonetheless, release of TBT is observed from leisure boats during hull maintenance work, such as pressure hosing. In this work, we used a handheld X-ray Fluorescence analyser (XRF) calibrated for antifouling paint matrixes to measure tin, copper and zinc in antifouling paints coat...
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