نتایج جستجو برای: dcf

تعداد نتایج: 1596  

2016
Pan Pantziarka Vidula Sukhatme Gauthier Bouche Lydie Meheus Vikas P Sukhatme

Diclofenac (DCF) is a well-known and widely used non-steroidal anti-inflammatory drug (NSAID), with a range of actions which are of interest in an oncological context. While there has long been an interest in the use of NSAIDs in chemoprevention, there is now emerging evidence that such drugs may have activity in a treatment setting. DCF, which is a potent inhibitor of COX-2 and prostaglandin E...

2013
Bhupeshwaran Mani

Here we propose a model on EnhancedLarge Effective Area Fiber (E-LEAF) and Dispersion Compensation Module (DCM) with precise designed Dispersion Compensation Fiber (DCF). The Model is implemented in a long haul Single and Multichannel Optical telecommunication systems with E-LEAF as data transmission Fiber (NZ-DSF) of 1700Km (85 Km SMF×20 loops) length. The DCM is proposed in Symmetric Compensa...

2013
Jie Li Lianggui Liu Ting Shu Huiling Jia

IEEE 802.11 is the most popular standard used in WLAN. Distributed Coordination Function (DCF) is one of the channel-access methods in the IEEE 802.11 Medium Access Control (MAC) protocol. However, It has not been adequately studied under the existence of hidden stations. In the paper, we present the novel saturated throughput analysis of the IEEE 802.11 DCF in the presence of hidden stations. ...

2008
Siwaruk Siwamogsatham

In this work, we propose a hybrid medium access scheme that can provide a virtually collision-free environment for an infrastructure high-speed WLAN. The proposed hybrid scheme may be viewed as the merger of the standard PCF and DCF schemes. It can efficiently provide the quality-of-service support like the PCF scheme, while utilizing the flexible on-demand CSMA mechanism similar to the DCF sch...

2004
Bo Li Roberto Battiti

Although the performance analysis of the IEEE 802.11 Distributed Coordination Function (DCF) in saturation state has been extensively studied in the literature, little work is present on performance analysis in non-saturation state. In this paper, a simple model is proposed to analyze the performance of IEEE 802.11 DCF with service differentiation support in non-saturation states, which helps t...

2008
Jerzy Stefanowski Dawid Weiss

This paper describes a technique for clustering large collections of short and medium length text documents such as press articles, news stories and the like. The technique called description comes first (DCF) consists of identification of related document clusters, selection of salient phrases relevant to these clusters and reallocation of documents matching the selected phrases to form final ...

Journal: :iranian journal of pharmaceutical sciences 0
mahmood reza moein medicinal plant research center, and department of pharmacognosy, school of pharmacy, shiraz university of medical sciences, shiraz, iran soheila moein department of biochemistry and molecular medicine research center, hormozgan university of medical sciences, bandar abbas, iran

in the present study, an oxidative conversion of non-fluorescent dichlorofluoroscein (ldcf) to fluorescent dichlorofluoroscein (dcf) was used for detection of antioxidant properties of plant extracts. the rate of the reaction was followed by monitoring the formation of dcf as a function of time. the antioxidant assay was carried out for different concentrations of gallic acid, salvia mirzayanii...

Journal: :American journal of physiology. Lung cellular and molecular physiology 2003
J Q Liu J S K Sham L A Shimoda P Kuppusamy J T Sylvester

To determine whether reactive oxygen species (ROS) play an essential role in hypoxic pulmonary vasoconstriction (HPV) and the cellular locus of ROS production and action during HPV, we measured internal diameter (ID) at constant transmural pressure, lucigenin-derived chemiluminescence (LDCL), and electron paramagnetic resonance (EPR) spin adduct spectra in small distal porcine pulmonary arterie...

Journal: :Expert Syst. Appl. 2011
Shiu-Hwei Ho Shu-Hsien Liao

The main purpose of this paper is to propose a fuzzy approach for investment project valuation in uncertain environments from the aspect of real options. The traditional approaches to project valuation are based on discounted cash flows (DCF) analysis which provides measures like net present value (NPV) and internal rate of return (IRR). However, DCF-based approaches exhibit two major pitfalls....

Journal: :Optics letters 2016
Jiejun Zhang Jianping Yao

We propose and experimentally demonstrate a microwave photonic integrator based on a multichannel fiber Bragg grating (FBG) working in conjunction with a dispersion compensating fiber (DCF) to provide a step group delay response with no in-channel dispersion-related distortion. The multichannel FBG is designed based on the spectral Talbot effect, which provides a large group delay dispersion (G...

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