Results 211 to 220 of about 6,135 (256)
Environmental Pollution, 2016 This study reports the first investigation of polychlorinated naphthalenes (PCNs) in air and soil samples from ecologically important sites of the Indus River Basin, Pakistan. The concentrations of ∑39-PCNs in air and soil were found in a range between 1–
Laura Sanchez-Garcia +2 more
exaly +2 more sources
Polychlorinated naphthalenes (PCNs) in Chinese forest soil: Will combustion become a major source?
Environmental Pollution, 2015 We collected O- and A-horizon soil samples in 26 Chinese mountainous forests to investigate the content, spatial pattern, and potential sources of polychlorinated naphthalenes (PCNs).
Qian Zheng +2 more
exaly +2 more sources
Polychlorinated naphthalenes (PCNs) in seafood: Estimation of dietary intake in Korean population
Science of the Total Environment, 2018 Polychlorinated naphthalenes (PCNs) were measured in 33 seafood species including fish, mollusks and crustaceans purchased from local markets in five Korean cities between 2012 and 2013. Five samples were collected from each species for the measurements.
Sung-Deuk Choi +2 more
exaly +2 more sources
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IEEE Communications Magazine, 1992
A compromise reached at the 1992 World Administrative Radio Conference (WARC-92) concerning the international frequency allocations for personal communications systems (PCSs) is reviewed. The PCS debate at the WARC-92 resulted in the collision of two nearly polar views: that of the Europeans, whose advocacy of PCS techniques was limitless; and that of ...
Danny E. Adams, Carl R. Frank
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A compromise reached at the 1992 World Administrative Radio Conference (WARC-92) concerning the international frequency allocations for personal communications systems (PCSs) is reviewed. The PCS debate at the WARC-92 resulted in the collision of two nearly polar views: that of the Europeans, whose advocacy of PCS techniques was limitless; and that of ...
Danny E. Adams, Carl R. Frank
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PCN: the probabilistic convergent network
Proceedings of ICNN'95 - International Conference on Neural Networks, 2002A new architecture for networks constructed from RAM-based neurons is presented which, whilst retaining learning and generalisation properties possessed by existing RAM-based network architectures, allows for a regular treatment of specialisation and generalisation with the additional property of providing information regarding the relative probability
Gareth Howells 0001 +2 more
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IEEE Transactions on Vehicular Technology, 2002
This paper proposes personal communication network (PCN) architecture based on wavelength-division multiplexing (WDM). By employing the broadcast nature of the WDM star couplers, the proposed architecture furnishes a very simple and fast hand off procedure.
Nen-Fu Huang, Rui-Chi Wang, Chien-Yu Yeh
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This paper proposes personal communication network (PCN) architecture based on wavelength-division multiplexing (WDM). By employing the broadcast nature of the WDM star couplers, the proposed architecture furnishes a very simple and fast hand off procedure.
Nen-Fu Huang, Rui-Chi Wang, Chien-Yu Yeh
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PCN: son of cellular? The challenges of providing PCN service
IEEE Communications Magazine, 1991The engineering and marketing problems posed by personal communications networks (PCNs) are examined. The characteristics common to all PCNs are identified, emphasizing their use of small-coverage cells (microcells). Trials undertaken by the Bell Atlantic telephone companies are discussed. >
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Study on the adsorption properties of metal–organic frameworks (PCN-228’, PCN-230)
Materials Technology, 2020The adsorption properties of two kinds of metal–organic frameworks (MOFs), PCN-228ʹ and PCN-230, have been studied by the grand canonical Monte Carlo (GCMC) method for the absorption of N2, H2, CH4...
Wei Dai +8 more
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IEEE Communications Magazine, 1992
The interference levels that may be expected for a range of conventional cellular and microcellular clusters used in personal communication networks (PCNs) and personal communication systems (PCSs) are discussed. Simulation results show that for conventional size cells, 32- and 64-level quadrature amplitude modulation (QAM) schemes are preferred for ...
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The interference levels that may be expected for a range of conventional cellular and microcellular clusters used in personal communication networks (PCNs) and personal communication systems (PCSs) are discussed. Simulation results show that for conventional size cells, 32- and 64-level quadrature amplitude modulation (QAM) schemes are preferred for ...
openaire +1 more source
International Journal of Satellite Communications, 1999
The ICO system is designed to provide global access to telecommunication services via a constellation of satellites in Medium Earth Orbit (MEO) and a ground segment referred to as the ICONET. The system integrates with terrestrial networks to provide terrestrial cellular-like services.
Lalji Ghedia, Keith Smith, Gary Titzer
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The ICO system is designed to provide global access to telecommunication services via a constellation of satellites in Medium Earth Orbit (MEO) and a ground segment referred to as the ICONET. The system integrates with terrestrial networks to provide terrestrial cellular-like services.
Lalji Ghedia, Keith Smith, Gary Titzer
openaire +1 more source