In wireless sensor networks (WSNs), detection and report of continuous object, such as forest fire and toxic gas leakage, is one of the major applications. In large-scale continuous object tracking in WSNs, there might be many source nodes simultaneously, detecting the continuous object. Each nodes reports its data to both a base station and mobile workers in the industry field. For communication between the source nodes and a mobile worker, sink location service is needed to continuously notify the location of the mobile worker. But, as the application has a large number of sources, it causes a waste of energy consumption. To address this issue, in this paper, we propose a two-phase sink location service scheme. In the first phase, the proposed scheme constructs a virtual grid structure for merging the source nodes. Then, the proposed scheme aggregates the merging points from an originated merging point as the second phase. Simulation results show that the proposed scheme is superior to other schemes in terms of energy consumption.
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http://dx.doi.org/10.3390/s20247282 | DOI Listing |
J Hazard Mater
December 2024
Toxicological Centre, University of Antwerp, Universiteitsplein 1, Wilrijk 2610, Belgium. Electronic address:
Electronic waste (e-waste) dismantling and dumpsite processes are recognized as significant sources of chlorinated paraffin (CP) exposure. This study aims to investigate the environmental occurrence and distribution of polychlorinated alkanes (PCAs-C), specifically in soil and outdoor dust samples collected from e-waste dumpsites and automobile dismantling and resale sites in Nigeria. The results revealed a widespread occurrence of PCAs across all sampled locations.
View Article and Find Full Text PDFUltrasonics
December 2024
LabTAU, INSERM, Centre Leon Berard, Universite Lyon 1, F-69003 LYON, France. Electronic address:
Treating colorectal liver metastases (CLMs) located at the hepatocaval confluence with surgery is challenging due to its complexity and associated high risks of perioperative mortality and morbidity. Moreover, thermal ablation techniques are sensitive to the "heat-sink" effect, which reduces their efficacy when tumors are in contact with major blood vessels. In this study we evaluated the feasibility and safety of an intraoperative high-intensity focused ultrasound (HIFU) device for destroying liver tissue volumes sufficiently large to consider treating CLMs at the hepatocaval confluence.
View Article and Find Full Text PDFMar Pollut Bull
December 2024
Danish Offshore Technology Centre (DTU), - Elektrovej 375, 2800 Kgs. Lyngby, Denmark.
The offshore oilfields in the North Sea area are increasingly employed for projects beyond oil production, like carbon capture and storage (CCS). Still, the fossil fuel production from mature fields is significant. It has raised environmental concerns associated with discharging produced waters (PW) and drilling mud into the sea.
View Article and Find Full Text PDFPhysiol Mol Biol Plants
November 2024
Shanghai Key Laboratory of Protected Horticultural Technology, Forestry and Fruit Tree Research Institute, Shanghai Academy of Agricultural Sciences (SAAS), Jinqi Rd 1000#, Fengxian District, Shanghai, 201403 China.
Unlabelled: Strawberry ( × ) production has been greatly hampered by anthracnose crown rot caused by . Crown, the modified stem of strawberry, is a sink organ involved in sugar allocation. Some Sugar Transport Proteins (STPs) are involved in competition for sugars between pathogen and host.
View Article and Find Full Text PDFAnimals (Basel)
December 2024
Department of Animal Production and Food Science, Faculty of Veterinary Medicine, University of Extremadura, Campus Universitario, 10003 Cáceres, Spain.
Livestock farming is an activity closely linked to the environment, directly affecting its surrounding ecosystem while utilizing the natural resources it provides. Accordingly, it is essential to study these production systems in order to implement more sustainable models that allow for a balance between socioeconomic and environmental factors. The main objective of this study was to analyze the environmental impact of nine different dairy goat production systems located in northern Extremadura, Spain.
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