188 research outputs found
Differentical Effects of PAHs and PAHs-Quinone on Oxidative Stress Damage in A549 Cells
金沢大学大学院自然科学研究科Promoting Environmental Pesearch in Pan-Japan Sea Area : Young Researchers\u27 Network, Schedule: March 8-10,2006,Kanazawa Excel Hotel Tokyu, Japan, Organized by: Kanazawa University 21st-Century COE Program, Environmental Monitoring and Prediction of Long- & Short- Term Dynamics of Pan-Japan Sea Area ; IICRC(Ishikawa International Cooperation Research Centre), Sponsors : Japan Sea Research ; UNU-IAS(United Nations University Institute of Advanced Studies)+Ishikawa Prefecture Government ; City of Kanazaw
Cognitive Networks Achieve Throughput Scaling of a Homogeneous Network
We study two distinct, but overlapping, networks that operate at the same
time, space, and frequency. The first network consists of randomly
distributed \emph{primary users}, which form either an ad hoc network, or an
infrastructure-supported ad hoc network with additional base stations. The
second network consists of randomly distributed, ad hoc secondary users or
cognitive users. The primary users have priority access to the spectrum and do
not need to change their communication protocol in the presence of secondary
users. The secondary users, however, need to adjust their protocol based on
knowledge about the locations of the primary nodes to bring little loss to the
primary network's throughput. By introducing preservation regions around
primary receivers and avoidance regions around primary base stations, we
propose two modified multihop routing protocols for the cognitive users. Base
on percolation theory, we show that when the secondary network is denser than
the primary network, both networks can simultaneously achieve the same
throughput scaling law as a stand-alone network. Furthermore, the primary
network throughput is subject to only a vanishingly fractional loss.
Specifically, for the ad hoc and the infrastructure-supported primary models,
the primary network achieves sum throughputs of order and
, respectively. For both primary network models, for any
, the secondary network can achieve sum throughput of order
with an arbitrarily small fraction of outage. Thus, almost all
secondary source-destination pairs can communicate at a rate of order
.Comment: 28 pages, 12 figures, submitted to IEEE Trans. on Information Theor
An environmental quinoid polycyclic aromatic hydrocarbon, acenaphthenequinone(AcQ), modulates COX-2 expression through ROS generation and NF-kB activation in A549 cells
金沢大学大学院自然科学研究科場所:金沢大学自然科学研究科図書館棟1階,講演会場:図書館棟1階 大会議室,ポスター会場:図書館棟1階12会議室,主催・共催:文部科学省21世紀COE「環日本海域の環境計測と長期・短期変動予測」, 大気環境学会, 金沢大学工学
An environmental quinoid polycyclic aromatic hydrocarbon, acenaphthenequinone(AcQ), modulates COX-2 expression through ROS generation and NF-kB activation in A549 cells
金沢大学大学院自然科学研究科場所:金沢大学自然科学研究科図書館棟1階,講演会場:図書館棟1階 大会議室,ポスター会場:図書館棟1階12会議室,主催・共催:文部科学省21世紀COE「環日本海域の環境計測と長期・短期変動予測」, 大気環境学会, 金沢大学工学
An environmental quinoid polycyclic aromatic hydrocarbon, acenaphthenequinone(AcQ), modulates COX-2 expression through ROS generation and NF-kB activation in A549 cells
金沢大学大学院自然科学研究科場所:東京大学弥生講堂,共催:文部科学省21世紀COE「環日本海域の環境計測と長期・短期変動予測」,大気環境学
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