نتایج جستجو برای: from 6 sampling sites
تعداد نتایج: 6309757 فیلتر نتایج به سال:
Methods Thirty-three sampling sites were located from 0 to 2400 m a.s.l. on Crete, and sampled using pitfall traps. Material from the high-activity period of Gnaphosidae (mid-spring to mid-autumn) was analysed. Sampling sites were divided into five altitudinal zones of 500 m each. Statistical analysis involved univariate statistics (anova) and multivariate statistics, such as multidimensional s...
background and aims. along with conventional periodontal therapy, subginigval application of platelet-rich plasma (prp) may provide more effective improvements in clinical parameters due to the presence of multiple growth factors. the aim of this double-blind, split-mouth, randomized study was to evaluate the adjunctive use of prp with scaling and root planing (srp) in the treatment of chronic ...
The main objective of this study was to assess the annual concentration and seasonal variation of benzo(a)pyrene (BaP) associated with PM10 in an urban site of Győr and in a rural site of Sarród in the sampling period of 2008–2012. A total of 280 PM10 aerosol samples were collected in each sampling site and analyzed for BaP by gas chromatography method. The BaP concentrations ranged from undete...
Inference for belief networks using Gibbs sampling produces a distribution for unob served variables that differs from the correct distribution by a (usually) unknown error, since convergence to the right distribution occurs only asymptotically. The method of "coupling from the past" samples from ex actly the correct distribution by ( conceptu ally) running dependent Gibbs sampling sim ulat...
Bees are important pollinators of agricultural crops, and bee diversity has been shown to be closely associated with pollination, a valuable ecosystem service. Higher functional diversity and species richness of bees have been shown to lead to higher crop yield. Bees simultaneously represent a mega-diverse taxon that is extremely challenging to sample thoroughly and an important group to unders...
ISO/IEC 17025:2017 and ISO 15189:2012 specify the requirements for competence of laboratories. The former refers to laboratories in general, whose activities include testing, calibration sampling followed by testing or while latter medical Despite differences between two standards reflecting specific needs each them is addressing, development these documents has, until now, similar paths. In th...
We provide an extension of the perfect sampling algorithm of Fill (1998) to general chains, and describe how use of bounding processes can ease computational burden. Along the way, we unearth a simple connection between the Coupling From The Past (CFTP) algorithm originated by Propp and Wilson (1996) and our extension of Fill's algorithm.
Ambient daytime and nighttime PM2.5 (particulate matter with aerodynamic diameter less than 2.5 μm) and TSP (the total suspended particulates) samples were collected at two sites (named Pudong and Jinshan) in Shanghai. The concentrations of PM2.5 and TSP were lower at Pudong than at Jinshan. Higher PM2.5 and TSP concentrations were observed during daytime than nighttime for both sites. Carbonac...
The distribution of macroinvertebrate communities from 5 sampling sites of the Tajan River were used to examine the relationship among physiochemical parameters with macroinvertebrate communities and also to assess ecological classification system as a tool for the management and conservation purposes. The amount of variation explained in macroinvertebrate taxa composition is within values r...
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