نتایج جستجو برای: انحراف از حد بهینه dop

تعداد نتایج: 704028  

Journal: :Journal of environmental quality 2007
B Gjettermann M Styczen S Hansen O K Borggaard H C B Hansen

Mobility of dissolved organic matter (DOM) strongly affects the export of nitrogen (N) and phosphorus (P) from soils to surface waters. To study the sorption and mobility of dissolved organic C and P (DOC, DOP) in soil, the pH-dependent sorption of DOM to samples from Ap, EB, and Bt horizons from a Danish agricultural Humic Hapludult was investigated and a kinetic model applicable in field-scal...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2002
Barbara Jordan Alain Charest John F Dowd Justin P Blumenstiel Ru-fang Yeh Rf Asiah Osman David E Housman John E Landers

Efficient single nucleotide polymorphism (SNP) genotyping methods are necessary to accomplish many current gene discovery goals. A crucial element in large-scale SNP genotyping is the number of individual biochemical reactions that must be performed. An efficient method that can be used to simultaneously amplify a set of genetic loci across a genome with high reliability can provide a valuable ...

Journal: :British journal of anaesthesia 2012
N Dietis J McDonald S Molinari G Calo R Guerrini D J Rowbotham D G Lambert

BACKGROUND While producing good-quality analgesia, µ-opioid (MOP) receptor activation produces a number of side-effects including tolerance. Simultaneous blockade of δ-opioid (DOP) receptors has been shown to reduce tolerance to morphine. Here, we characterize a prototype bifunctional opioid H-Dmt-Tic-Gly-NH-Bzl (UFP-505). METHODS We measured receptor binding affinity in Chinese hamster ovary...

Journal: :CoRR 2000
Rens Bod

We present an LFG-DOP parser which uses fragments from LFG-annotated sentences to parse new sentences. Experiments with the Verbmobil and Homecentre corpora show that (1) Viterbi n best search performs about 100 times faster than Monte Carlo search while both achieve the same accuracy; (2) the DOP hypothesis which states that parse accuracy increases with increasing fragment size is confirmed f...

Journal: :Journal of the American College of Cardiology 2006
Lyes Kadem Régis Rieu Jean G Dumesnil Louis-Gilles Durand Philippe Pibarot

OBJECTIVES We sought to determine whether the flow-dependent changes in Doppler-derived valve effective orifice area (EOA) are real or due to artifact. BACKGROUND It has frequently been reported that the EOA may vary with transvalvular flow in patients with aortic stenosis. However, the explanation of the flow dependence of EOA remains controversial and some studies have suggested that the EO...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Timothy D Vaden Chen Song Rahul A Zaveri Dan Imre Alla Zelenyuk

Primary organic aerosol (POA) and associated vapors can play an important role in determining the formation and properties of secondary organic aerosol (SOA). If SOA and POA are miscible, POA will significantly enhance SOA formation and some POA vapor will incorporate into SOA particles. When the two are not miscible, condensation of SOA on POA particles forms particles with complex morphology....

Journal: :Optics express 2012
Nathan J Pust Joseph A Shaw

The visible and NIR maximum degree of polarization (DoP) of cloud-free skylight depends on many factors, including wavelength, sun zenith angle, surface reflectance, and aerosol properties. For clear-sky environments, radiative transfer models accurately estimate the sky DoP when each of these properties is well constrained. (The model used here was recently compared with full-sky polarization ...

2013
Barend Beekhuizen Rens Bod

The constructionist approach to language has long proven its merits as a theoretical framework guiding linguistic observations. However, relatively little work has been dedicated to providing a precise, formalized definition of constructions and the mechanisms by means of which they are acquired. In giving an overview of recent work in Data-Oriented Parsing (DOP), we show how the theoretical de...

Journal: :Cold Spring Harbor protocols 2012
Abby F Dernburg

It is sometimes useful to amplify DNA before labeling it. Degenerate oligonucleotide primed-polymerase chain reaction (DOP-PCR) allows amplification of any complex DNA, regardless of sequence. DOP-PCR is performed using a single primer that has a fixed sequence at its 5' end and several degenerate bases near its 3' end that allow it to anneal at low stringency to many sites in complex DNA. Foll...

ژورنال: :روش های تحلیلی و عددی در مهندسی معدن 0
رامین رفیعی دانشکده مـهندسی معدن، نفت و ژئوفیزیک، دانـشگاه صنعتی شاهرود محمد عطایی دانشکده مـهندسی معدن، نفت و ژئوفیزیک، دانـشگاه صنعتی شاهرود ازیتا آذرفر دانشکده مهندسی برق و کامپیوتر، دانشگاه آزاد اسلامی واحد شاهرود

هدف اساسی برنامه ریزی تولید بلند مدت، اتخاذ تدابیری جهت اجرای عیارهای حد استخراجی و برنامه ریزی تولید کوتاه مدت است. یکی از مهمترین پارامترها در طراحی معادن روباز، تعیین عیار حد بهینه است. عیار حد بهینه منجر به بیشینه نمودن سود و یا بیشینه نمودن ارزش خالص فعلی می شود. بیشنه نمودن ارزش خالص فعلی که در چند دهه اخیر مورد توجه قرار گرفته است، یک مساله برنامه ریزی غیرخطی است. لین برای تعیین عیار حد ...

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