نتایج جستجو برای: شبکه lan
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IEEE802.11s draft proposes a new medium access control (MAC) function-mesh deterministic access (MDA), which is mainly used for single-channel wireless mesh local area network (LAN). In single-channel environment, collisions between control packets and data packets may occur very often. In order to provide higher performance and network capacity for wireless mesh LAN, this article develops an a...
The interconnection of local area networks is increasingly important, but little data are available on the characteristics of the aggregate traffic that LANs will be submitting to the interconnection media. In order to understand the interactions between LANs and the proposed interconnection networks (MANs, WANs, and BISDN networks), it is necessary to study the behavior of this external LAN tr...
s Selection of Annals of Nuclear Medicine C-methylaminoisobutyric acid (MeAIB) PET for evaluation of prostate cancer: compared with F-fluorodeoxyglucose PET Maya K. Arimoto, Tatsuya Higashi, Ryuichi Nishii, et al Li Mengting (Translator), Lan Xiaoli, Tang Jun (Revisers) 190 A two-center study for the quality control of [F]FDG using FASTlab phosphate cassettes Ya-Yao Huang, Stephen Taylor, Jacek...
Background: The aberrant and altered patterns of gene expression play an important role in the biology of cancer and tumorigenesis. DNA methylation and histone deacetylation are the most studied epigenetic mechanisms. Histone deacetylase inhibitors (HDACIs) such as valproic acid (VPA) and trichostatin A (TSA) are a group of anticancer compounds for the treatment of solid and hematological canc...
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از جمله موضوعات مطرح در شبکه های محلی بی سیم، افزایش گذردهی از یکسو و دسترسی عادلانه ترمینال ها به کانال از سوی دیگر است. در شبکه های محلی بی سیم گسترده، امکان استفاده مجدد از کانال برای ترمینال هایی که به اندازه کافی از یکدیگر فاصله دارند، وجود دارد. این استفاده مجدد که به آن باز استفاده مکانی می گوییم، سبب افزایش گذردهی شبکه می شود. اما برقراری عدالت در استفاده از رسانه، از دیگر نیازهای این ش...
Wireless LAN technology is becoming increasingly popular for a wide variety of applications. After evaluating the technology, most users are convinced of its reliability, satisfied with its performance and are ready to use it for large-scale and complex wireless networks. Originally designed for indoor office applications, today's Wireless LANs can be used for both indoor peer-to-peer networks ...
The mechanisms underpinning the ecological impacts of the presence of artificial night lighting remain elusive. One suspected underlying cause is that the presence of light at night (LAN) supresses nocturnal production of melatonin, a key driver of biological rhythm and a potent antioxidant with a proposed role in immune function. Here, we briefly review the evidence for melatonin as the link b...
s Selection of Annals of Nuclear Medicine F-FDG uptake by rectal cancer is similar in mucinous and nonmucinous histological subtypes Dalton A. dos Anjos, Angelita Habr-Gama, Bruna B. Vailati, et al 126 Liu Qingyao (Translator), Lan Xiaoli (Reviser) Impact of patient age on the iodine/FDG “flip-flop” phenomenon in lung metastasis from thyroid cancer Takuro Isoda, Shingo BaBa, Yasuhiro Maruoka, e...
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