نتایج جستجو برای: dda

تعداد نتایج: 745  

2017
Jörg Galambos Claudia Meuli-Simmen Regula Schmid Lisa S. Steinmann Werner Kempf

Diffuse dermal angiomatosis (DDA) is a rare reactive angioproliferation in the skin and considered to be a subtype in the group of cutaneous reactive angiomatoses. DDA is clinically characterized by livedoid patches and plaques with tender ulceration. Its histologic features are a reactive diffuse proliferation of bland endothelial cells and pericytes within the dermis, forming small capillary ...

Journal: :International journal of toxicology 2009
Zhenshan Chen Francois Maartens Helen Vega Simon Kunene Jonathan Gumede Robert I Krieger

DDT metabolism in humans yields DDA as the principal urinary metabolite and potential exposure biomarker. A method for DDA analysis in human urine was developed using pentafluorobenzyl bromide and diisopropylethyl amine. Dried hexane extracts were reacted for 1 hour at room temperature. The stable DDA-pentafluorobenzyl-ester derivative was analyzed by gas chromatography-electron capture detecto...

Journal: :Chemical communications 2008
Andrea M McGhee Colin Kilner Andrew J Wilson

5-Membered heterocycles are employed to give a conformer independent DDA array of hydrogen bonds, resulting in enhanced binding affinity to a complementary AAD array in comparison to a DDA array employing a 6-membered ring.

2010
Ralf Dreesen Thorsten Jungeblut Michael Thies Uwe Kastens

Data dependence analysis (DDA) on assembly code is a frequent problem in compilers and program analysis tools. The fundamentals of a DDA on code for simple processors are well understood. We propose a DDA method, that is applicable for a wider range of processors. This includes VLIW processors and processors with delayed branches and delayed register accesses. For these architectures, the instr...

Journal: :Bioinformatics 2016
Dennis Goldfarb Wei Wang Michael B. Major

UNLABELLED Data-dependent acquisition (DDA) is the most common method used to control the acquisition process of shotgun proteomics experiments. While novel DDA approaches have been proposed, their evaluation is made difficult by the need of programmatic control of a mass spectrometer. An alternative is in silico analysis, for which suitable software has been unavailable. To meet this need, we ...

2015
Eva Burrows

The notion of Data Dependency Algebra (DDA) is an algebraic formalism that turns data dependencies into first class citizens in the program code through a dedicated Application Programming Interface (API). This forms the basis of a platform independent parallel programming model [BH09]. In this paper, we further expand the theory of DDAs by proposing algebraic combinators operating on top of DD...

2005
Yaling Yang Robin Kravets

In this paper, we propose a new protocol, named DDA (Distributed Delay Allocation), which provides average delay guarantees to real-time multimedia applications in wireless ad hoc networks. By adapting the contention window sizes of IEEE 802.11, DDA schedules packets of flows according to their individual delay requirements. The novelty of DDA is that it imposes no control message overhead on t...

Journal: :Blood 1988
Z Spigelman R Duff G P Beardsley S Broder D Cooney N R Landau H Mitsuya B Ullman R McCaffrey

The 2',3'-dideoxynucleosides (ddNs) are currently undergoing clinical evaluation as antiretroviral agents in HIV-infected individuals. When phosphorylated, the ddNs (ddNTPs) function as chain-terminating substrate analogues with reverse transcriptase, thereby inhibiting HIV replication. These nucleoside analogues can also inhibit, by chain-terminating additions, the primitive lymphoid DNA polym...

2011
M. S. Khan A. Riahi J. H. Curran

This paper investigates the expected benefits of the implicit time integration scheme in the solution of jointed rock problems. Discontinuous Deformation Analyses (DDA) exploits the unconditional stability of the implicit time integration scheme, and allows the time step size of the solution to be much larger than the critical time step size dictated by the stability requirement of the explicit...

Journal: :IEEE Transactions on Broadcasting 2023

Adaptive streaming based on DASH offers personalized video experience and smooth playback by allowing dynamical adjustments of the bitrate to variations network conditions. This is especially important for current future Internet applications, including emerging ones such as virtual reality-based, adaptive plays a key role in providing high quality viewing experience, limited bandwidth delivery...

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