PCA: uma ferramenta para identificação de traçadores químicos para água de formação e água de injeção associadas à produção de petróleo

Ribeiro, Fabiana Alves de Lima; Mantovani, Guilherme Alvarenga; Poppi, Ronei J.; Rosário, F.F.; Bezerra, Maria Carmen Moreira; Bastos, André Luis Mathias; Melo, Vera Lucia

doi:10.1590/s0100-40422013000900002

Cited by 9 publications

(5 citation statements)

References 14 publications

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“…Thus, the results show that the produced water is a dynamic medium of complex chemical composition, subject to variation as a function of time, due to ambient temperature conditions, contact with air, photo-oxidation, biodegradation, as well as other factors inherent in the studied system 2 . The literature states that variations in the physical-chemical parameters of produced water in oilfields may be related to seasonal aspects 44 .…”

Section: Physico-chemical Analysis Of Produced Watermentioning

confidence: 99%

Study on Biofilm Forming Microorganisms Associated with the Biocorrosion of X80 Pipeline Steel in Produced Water from Oilfield

et al. 2021

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Biocorrosion is the main process that causes pipeline damages and losses in the oil industry. The objective of this work was to investigate the influence of biofilm forming microorganisms on the biocorrosion of X80 steel exposed in produced water through microbiological characterization, film and biofilm analysis by optical microscopy and scanning electron microscopy, weight loss and surface analysis by laser confocal microscopy. Changes in produced water after 360 days were attributed to planktonic cells, temperature conditions, contact with air, photo-oxidation, biodegradation, and seasonality. The total aerobic bacteria presented sessile cell concentration of 7.39 x 10 4 CFU/cm 2 , while the other investigated groups showed lower concentrations. The micrography of the film showed salt crystals, whereas in the biofilm microorganisms, exopolysaccharides and corrosion products were observed. Weight loss after 360 days for the abiotic and biotic systems was 0.0222 g/cm 2 and 0.3039 g/cm 2 , respectively, showing that microorganisms accentuated the corrosion of X80 steel.

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Section: Physico-chemical Analysis Of Produced Watermentioning

confidence: 99%

Study on Biofilm Forming Microorganisms Associated with the Biocorrosion of X80 Pipeline Steel in Produced Water from Oilfield

et al. 2021

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“…Bi-plot partially grouped walnut genotypes according to their parents (Table 6; Figure 2). Multivariate analysis is performed to summarize the variability of a complex data set and present the data in an interpretable form as in the prin cipal components (Ribeiro et al 2013). The purpose of PCA is to identify the main factors and influential parameters that distinguish pa rticipation .…”

Section: Phenological Data Analysismentioning

confidence: 99%

A Research on the Determination of Phenological and Molecular Characterization in Open-pollinated Genotypes in Walnut

Sütyemez¹,

Boyaci²,

Kuscuoglu³

et al. 2021

Preprint

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This research was carried out to reveal the phenological and genetic differences between the S-1/1 walnut genotype and 94 F1 genotypes obtained from this genotype with each other and with the maternal parent. In the phenological observations made, it was observed that bud burst in genotypes took 52 days, leafing 50 days, leaf yellowing 31 days, and defoliation date 27 days. When the maternal parent (S-1/1) and the genotypes were compared, it was found that there was a phenological variation of 75.54 % in budburst, 73.41 % in the leafing, 34.05 % in leaf yellowing, and 93.62 % in defoliation date, while the average variation was 69.15 %. In molecular genetic analyzes, 7 ISSR primers were used to determine genetic variations, as a result, 7 monomorphic and 45 polymorphic bands were obtained, and the rate of polymorphism was found to be 86.53 %. The average number of alleles was calculated to be 7.42. In genotypes, the polymorphism information content (PIC) value varied between 0.48 and 0.95, while the average PIC value was calculated to be 0.73. As a result of cluster analysis, it was seen that genotypes were divided into 2 main clusters and 2 subsets. At the end of the study, it was determined that the S-1/1 walnut genotype and F1 genotypes obtained from this genotype have a significant variation both phenologically and genetically.

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“…2). Multivariate analysis summarized the variability of a complex dataset and presented it in an interpretable form, such as in principal components (Ribeiro et al 2013). The aim of PCA is to determine the main factors and effective parameters that discriminate among accessions (Khadivi-Khub et al 2015).…”

Section: Phenological Data Analysismentioning

confidence: 99%

Similarities of leafing and leaf fall date of ‘Pedro’ walnut variety with its progenies in breeding programs

Özcan

Sütyemez

Nar

et al. 2020

Physiol Mol Biol Plants

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In this research, 'Pedro' walnut variety (maternal parent) was open pollinated. Offspring genotypes were compared with their maternal parent in terms of morphological and molecular features. Leafing and leaf fall dates were measured as two phenological traits. Genetic differences were identified by molecular fingerprinting using twelve Inter Simple Repetitive Sequence Polymorphism (ISSR) primers. In some progenies, leafing and leaf fall occurred later than the maternal parent ('Pedro'). Progenies were grouped according to their similarities with the maternal parent regarding leafing date. Specifically, 14.44% of the progenies were 'Very close' to the parent, 16.66% were 'Close', 30.00% 'Far' and 38.89% 'Very far'. Regarding the leaf fall date, 7.78% of the progenies were 'Very close' to the parent, 28.88% were 'Close', 36.66% 'Far' and 26.67% 'Very far'. A total of 43 bands were obtained in molecular analyses. These bands were largely polymorphic (95.34%). The average number of the alleles was 3.90, while the polymorphism information content varied between 0.14 and 0.91 among the genotypes. Genetic distances were tested according to the UPGMA (Unweighted Pair Group Method with Arithmetic Average) and by The Structure Analysis. The UPGMA dendrogram divided the genotypes into two main clusters and the similarity coefficient of the genotypes varied between 0.61 and 0.99. This study revealed that 'Pedro' can be used as an excellent parental variety in hybridization programs which prioritize late-leafing in walnut breeding. Furthermore, ISSR primers can be safely used for fingerprinting walnuts in general.

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PCA: uma ferramenta para identificação de traçadores químicos para água de formação e água de injeção associadas à produção de petróleo

Cited by 9 publications

References 14 publications

Study on Biofilm Forming Microorganisms Associated with the Biocorrosion of X80 Pipeline Steel in Produced Water from Oilfield

Study on Biofilm Forming Microorganisms Associated with the Biocorrosion of X80 Pipeline Steel in Produced Water from Oilfield

A Research on the Determination of Phenological and Molecular Characterization in Open-pollinated Genotypes in Walnut

Similarities of leafing and leaf fall date of ‘Pedro’ walnut variety with its progenies in breeding programs

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