Day 1 Mon, April 08, 2019最新文献

{"title":"Identification of sources of resistance to damping-off (Rhizoctonia solani) in two phenological phases of watermelon","authors":"F. D. S. Cunha, A. F. D. Costa, A. S. Capucho, R. C. S. Dias, F. H. Ishikawa","doi":"10.21475/AJCS.19.13.04.P1675","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.04.P1675","url":null,"abstract":"Sources of resistance to damping-off caused by Rhizoctonia solani were researched in watermelon accessions, in which thirty accessions were inoculated in two phenological phases (at seeding and seedling stages). The completely randomized design with five replications per accession was used in both phenological stages. The inoculation in seeding stage was carried out at the time of sowing, while for seedling the inoculation was done 15 days after sowing. In both stages the evaluation occurred 15 days after inoculation using a rating scale. At seeding stage, six accessions were moderately resistant to CMM-2967 of R. solani. However, no accession resistant to CMM-1053 and CMM-1052 isolates was recognized. Three accessions were resistant to CMM-1053 at the seedling stage. Posteriorly, inoculation was carried out using only accessions classified as resistant in the previous evaluations using both phenological stages. For CMM-1053, factorial scheme of 2x4 were used (two stages and four accessions). For assessments against isolate CMM-2967 a factorial scheme of 2x12 (two stages and 12 accessions) was used. We confirmed the results of first two experiments for both isolates. At seeding stage, all accessions were classified as susceptible to CMM-1053. However, at the seedling stage, only Crimson Swett was susceptible. For the CMM-2967, inoculated at the seeding stage, the accessions were classified into two groups (resistant and susceptible) (Scott-Knott at 5%). At seedling stage there was no statistical difference among eleven accessions and they were all classified as resistant. Due to difficulty of finding sources of resistance to damping off, the method of inoculation at seedling stage showed more efficient for this pathosystem and could facilitate the work of breeders and plant pathologists.","PeriodicalId":10983,"journal":{"name":"Day 1 Mon, April 08, 2019","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76534722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of calcium, BAP and putrescine on somatic embryo induction in juvenile explants of Eucalyptus grandis × E. urophylla hybrids","authors":"L. C. Moura, Aloisio Xavier, A. C. F. Cruz, D. S. Batista, R. Gallo, N. A. Miranda, W. Otoni","doi":"10.21475/AJCS.19.13.04.P1345","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.04.P1345","url":null,"abstract":"Considering the constant improvement of Eucalyptus cloning and the search for new technologies to produce plantlets of this species, somatic embryogenesis has attracted interest from research groups and forestry companies that use advanced genetic breeding and cloning programs. The objective of the present study was to verify the effect of concentrations and sources of calcium, concentrations and effect time of cytokinin BAP and polyamine putrescine on the induction and development of somatic embryos in juvenile explants of Eucalyptus grandis x E. urophylla. Cotyledonary explants were inoculated into culture medium containing calcium chloride (MS medium) or calcium nitrate (JADS medium) as source of calcium. Different concentrations of calcium were also used, for MS medium containing: 4.40 gL-1 (control-Ca), 6.60 gL-1 (50% increase over control - Ca 50) and 8.80 gL-1 (increase of 100% over control – Ca 100) of calcium nitrate; and for JADS medium containing: 11.81 gL-1 (Ca), 17.72 gL-1 (Ca50) and 23.62 gL-1 (Ca100) of calcium chloride. Cotyledon explants were inoculated into the primary induction medium (PIM) containing 20.71 μM picloram as growth regulator. At 10, 20 and 30 days of primary induction, the explants were transferred to the secondary induction medium (SIM) containing 20.71 μM picloram and 11.10 μM BAP or 28.36 μM putrescine. The culture medium containing calcium nitrate provided higher callogenesis when compared to the medium containing calcium chloride. The increase in calcium concentration in the media did not provide higher percentage of induction of somatic pro-embryos. However, the addition of 28.36 μM putrescine to the culture medium provided a higher percentage of induction of somatic embryogenesis. The number of somatic pro-embryos formed per explant was higher when BAP and putrescine were added to the culture medium when compared to medium containing only picloram. To obtain a greater number of somatic pro-embryos of Eucalyptus grandis × E. urophylla, the JADS culture medium containing 28.36 μM putrecine should be used.","PeriodicalId":10983,"journal":{"name":"Day 1 Mon, April 08, 2019","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73387588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biometric characteristics of fruits, seeds and plants of Hancornia speciosa Gomes. (Apocynaceae)","authors":"A. M. Zuffo, A. Busch, F. Steiner, C. Z. Alves, F. A. Neto, M. A. Santos, G. A. Nogueira, W. Fonseca, A. M. Oliveira, T. D. O. Sousa, A. S. Santos","doi":"10.21475/AJCS.19.13.04.P1651","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.04.P1651","url":null,"abstract":"The economic and scientific interest in Hancornia speciosa Gomes (mangabeira) has increased in recent years, especially due to the commercialization of its fruits and the extraction of natural compounds with high pharmacological potential. This paper aims to determine and correlate the main physical and biometric characteristics of fruits and seeds of mangaba tree, as well as identifying the most appropriate substrate for the seedling emergence test. The following physical and biometric traits were measured in 100 fruits and 100 seeds: longitudinal diameter, transverse diameter, thickness, fresh mass, pulp fresh mass, volume, number of seeds. To identify the best substrate, a completely randomized design with two treatments (substrates) and ten replications of 20 seeds was used. The evaluated substrates were: sand and commercial substrate (Plantmax HT®). The shoot height, root length, stem diameter, total dry mass, and the relation between shoot height and stem diameter were evaluated at 50 days after sowing. Mangaba fruits and seeds showed great variations in their biometric traits, in addition to significant and positive correlation predominant in most characteristics. High fruit pulp yield can be optimized with the selection of plants with fruits show greater fresh mass due to the high degree of association between this characteristic and pulp yield. The use of the commercial substrate resulted in higher shoot height, greater number of leaves, and higher shoot height/stem diameter ratio.","PeriodicalId":10983,"journal":{"name":"Day 1 Mon, April 08, 2019","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80731100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vegetative ash biomass as a potential source of silicon for soils in eucalyptus plantation","authors":"Mara Lúcia Martins Magela, L. Coelho, R. R. Finzi, L. Gontijo","doi":"10.21475/AJCS.19.13.04.P995","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.04.P995","url":null,"abstract":"In face of the need to broaden the knowledge about the effects of ashes in eucalypt plantations, this study evaluated the use of ashes in two typical Brazilian soils for forest plantations. The experiment was done in a greenhouse, from November 19 to December 19 (2014), in Uberlândia, MG. The ashes were obtained from eucalypt wood and bark, eucalypt twigs and leaves, pine wood and bark and sugar cane bagasse, applied to a sandy soil (experiment 1) or to a clayey one (experiment 2). In each experiment, incubation tests were done in a completely randomized design as 4×2+1 factorial consisting of four ash sources. Vegetative ash biomass from eucalypt wood and bark (EWB), eucalypt twigs and leaves (ETL), pine wood and bark (PWB) and sugar cane bagasse (SCB), two doses (200 and 400 kg ha-1), and a control (with no silicon source), with three replications. Soluble silicon, pH, and exchangeable Ca and Mg were determined after incubating the soils for 30 days. PWB supplied more Si to both soils. The SCB did not increase Ca and Mg to either soil, regardless of the dose. The ashes that most reduced soil acidity in the sandy soil were those of eucalypt, at 400 kg ha-1, while no pH change was observed in the clayey one. The best silicon source evaluated for both soils was pine wood and bark (PWB) at 400 kg ha-1; however, EWB and ETL should be used whenever available.","PeriodicalId":10983,"journal":{"name":"Day 1 Mon, April 08, 2019","volume":"103 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80344206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Productivity and nutrient extraction by Brachiaria brizantha fertigated with treated sewage effluent","authors":"G. O. Santos, R. T. Faria, Gárdia Rodrigues, G. D. F. Dantas, N. R. Costa","doi":"10.21475/AJCS.19.13.04.P989","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.04.P989","url":null,"abstract":"The present study was performed to evaluate the responses in productivity and nutrient extraction in dry biomass of Brachiaria brizantha ‘Marandu’ fertigated with treated sewage effluent (TSE) from 2013 to 2014, in Jaboticabal, São Paulo, Brazil. A triple line source sprinkler system was used to perform uniform but gradual irrigation of TSE and mineral fertilization in five treatments, with the following TSE fractions in water: 1.0 (E5); 0.87 (E4); 0.6 (E3); 0.31 (E2), and 0.11 (E1). In addition to fertigation, all treatments were supplemented with P and K. TSE was applied at depths of 1,853 and 2,253 mm year-1 in 2013 and 2014, respectively. This provided E5 with the following amounts of N, P, K, and Na (kg ha-1): 931, 27, 314, and 894, in 2013, and 1,132, 21, 463, and 1,428, in 2014. The most relevant effects on B. brizantha dry biomass yield and nutrient extraction were obtained with higher doses of TSE. The extract of macronutrients was higher for K and N, followed by K, Ca, Mg, and Na. Based on the responses in productivity and nutrient extraction of soil by the crop as a function of TSE fertilization without soil contamination, we propose that increased fertilizer application be studied further.","PeriodicalId":10983,"journal":{"name":"Day 1 Mon, April 08, 2019","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82283391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fruit quality of a traditional pineapple cultivar (Turiaçu) compared to the most popular cultivar (Pérola) in Brazil","authors":"F. O. Reis, J. H. R. Araujo, H. Braun, A. C. V. N. Junior, A. Pereira","doi":"10.21475/AJCS.19.13.04.P1452","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.04.P1452","url":null,"abstract":"Turiaçu is a traditional pineapple cultivar in the state of Maranhão, Brazil, and its fruits have high potential for the fresh fruit market due to consumer acceptance. This cultivar is in the process of domestication, but information on the quality of its fruits and their standards for marketing is scarce. The objective of this study was to evaluate the biometric and chemical characteristics of the Turiaçu pineapple cultivar and the Pérola cultivar, which are grown in the main pineapple producing areas—Turiaçu, and São Domingos do Maranhão—in the state of Maranhão. The fruits were harvested at the green stage to evaluate the following biometric characteristics: fruit weight, infructescence weight, pulp yield, crown, peel and total residues, and base to apex diameter ratio; and the following chemical characteristics—total soluble solids (TSS), total titratable acidity (TTA), and TSS to TTA chemical ratio. The Turiaçu cultivar presented higher fruit and infructescence weights, more cylindrical fruits, and pulp with higher TSS concentration and less acidity, compared to the Pérola cultivar. Fruits of the Turiaçu cultivar had more desirable biometric and chemical qualities for the consumer market— they were large, cylindrical, sweet, and with low acidity—, compared to those of the Pérola cultivar.","PeriodicalId":10983,"journal":{"name":"Day 1 Mon, April 08, 2019","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83628994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accumulation of cadmium (Cd) in T1 transgenic tobacco seedlings expressing metallothionein gene from Eleusine indica","authors":"N. Sidik, R. M. Yazid, Dhalila Zafirah Mohd Dahlan, B. Othman, I. Ismail","doi":"10.21475/AJCS.19.13.04.P1630","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.04.P1630","url":null,"abstract":"Cadmium (Cd) contamination of urban and agricultural soils is toxic to humans, animals and may cause negative effects on plant growth and crop production. The existing conventional methods are found to be not efficient to remove Cd from contaminated soil. The present experiment reports the analysis of nine T1 lines of transgenic tobacco carrying metallothionein gene (eiMT1) from Eleusine indica, with potential for high efficiency to remediate Cd in contaminated soils. Thirty-days old tobacco plants were treated with different concentrations of CdNO3 (0, 50, 100 and, 150 µmol) for seven days and the accumulation of Cd in the whole seedling was quantitatively determined by using atomic absorption spectrometer (AAS). All transgenic tobacco lines showed greater tolerance and accumulated higher level of Cd than the wild type with lines 18D, 20D1 and, 18C were among the highest (678.7, 623.0 and 611.9 mgkg-1 Cd, respectively). Meanwhile, transgenic tobacco lines 18B1 and 20D1 showed higher expression of eiMT1 gene. These results suggest that the cadmium accumulation in transgenic tobacco did not strictly associate with the expression level of eiMT1 gene. However, expression of eiMT1 greatly required for higher accumulation of Cd in transgenic tobacco seedling.","PeriodicalId":10983,"journal":{"name":"Day 1 Mon, April 08, 2019","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83522114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phenotypic diversity and marker-trait association studies under heat stress in tomato (Solanum lycopersicum L.)","authors":"Muhammed Alsamir, N. Ahmad, V. Arief, T. Mahmood, R. Trethowan","doi":"10.21475/AJCS.19.13.04.P1581","DOIUrl":"https://doi.org/10.21475/AJCS.19.13.04.P1581","url":null,"abstract":"Tomato is a mild season crop and high temperature stress impacts productivity negatively. However, the development of cultivars with improved heat tolerance is possible as genetic variability has been consistently reported. This study aimed to identify candidate genes that impact various traits under heat stress. Genome-wide association studies (GWAS) were conducted on a diverse set of 144 tomato genotypes collected from various germplasm centers and breeding programs. The genotypes were grown under control and heat stress in poly tunnels having mean temperatures of 30°C and 45°C for two seasons and phenotypic data were collected on seven agro-physiological traits. All individuals were genotyped withthe80K DArTseq platform using 31237 SNP markers. Data were analysed using a mixed model based on restricted maximum likelihood (REML). Pattern analysis of the phenotypic data showed five primary clusters each with genotypes from multiple origins. Based on the genotypic data, three wild tomato genotypes showed a degree of un-relatedness with the other materials as they were distantly located from the rest of the genotypes in the scatter plot. Control treatment data were used to ascertain markers that are exclusively important under high temperature stress. A large number of markers were significantly associated with various traits under heat stress. These included strong marker associations for number of inflorescence/plant (IPP), number of flowers/inflorescence (FPI), fresh fruit weight (FFrW), and electrolyte leakage (EL). High association with EL was found due to two SNPs 7858523|F|0-25:G>A-25:G>A and 4705224|F|0-60:C>G-60:C>G located on Chr 6. Other less pronounced marker-trait associations were observed for plant dry weight (PDW), and number of fruit/plant (FrPP).","PeriodicalId":10983,"journal":{"name":"Day 1 Mon, April 08, 2019","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87763504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"C-S-H-PCE Nanofoils: A New Generation of Accelerators for Oil Well Cement","authors":"J. Plank, Timon Echt","doi":"10.2118/193639-MS","DOIUrl":"https://doi.org/10.2118/193639-MS","url":null,"abstract":"\u0000 The goal was to search for a replacement of CaCl2 which presents the most widely used accelerator for oil well cement used in cold and arctic environments and sometimes in deepwater drilling. For this purpose, novel calcium silicate hydrate (C-S-H) nanoparticles were synthesized and tested. The C-S-H was synthesized by the precipitation method in an aqueous solution of polycarboxylate (PCE) comb polymer which is widely used as concrete superplasticizer. The resulting C-S-H-PCE suspension was tested in the UCA instrument as seeding material to initiate the crystallization of cement and thus accelerate cement hydration as well as shorten the thickening time at low temperature. It was found that in PCE solution, C-S-H precipitates first as nano-sized droplets (Ø ~20 - 50 nm) exhibiting a PCE shell. Following a rare, non-classical nucleation mechanism, the globules convert slowly to nanofoils (HR TEM images: l ~ 50 nm, d ~ 5 nm) which present excellent seeding materials for the formation of C-S-H from the silicate phases C3S/C2S present in cement. Thickening time tests performed at + 4 °C in an atmospheric consistometer revealed stronger acceleration than from CaCl2 while very low slurry viscosity was maintained, as was evidenced from rheological measurements. Accelerated strength development was checked on UCA cured at + 4 °C and under pressure, especially the wait on cement time was significantly reduced. Furthermore, combinations of C-S-H-PCE and HEC as well as an ATBS-based sulfonated fluid loss polymer were tested. It was found that this C-S-H- based nanocomposite is fully compatible with these additives. The novel accelerator based on a C-S-H-PCE nanocomposite solves the problems generally associated with CaCl2, namely undesired viscosity increase, poor compatibility with other additives and corrosiveness against steel pipes and casing.","PeriodicalId":10983,"journal":{"name":"Day 1 Mon, April 08, 2019","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87847376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantifying Volume Expansion of Gas-Generating Materials in Cement Slurries","authors":"Ilia Partch, J. Ferrell, D. Morrison, E. Salinas, S. Franks","doi":"10.2118/193624-MS","DOIUrl":"https://doi.org/10.2118/193624-MS","url":null,"abstract":"\u0000 In cementing applications, the release of gas is used to prevent shrinkage of the set cement in an annulus. With a significant decrease of volume of the wellbore, long term annular isolation may result in microfractures of the cement system; therefore, a failure of the cement bond (Go Boncan and Dillenbeck 2003). Currently, there is not a recommended procedure to quantitatively measure cement additives that facilitate gas expansion. This paper describes a methodical approach to quantify gas expansion within cement slurries.\u0000 Traditionally, a known rudimentary technique in measuring gas expansion in cement slurries is to use a glass beaker and to record the observations. Under static and atmospheric conditions, a graduated cylinder has been used to quantitatively measure the displacement of gas release within the annulus at ambient conditions. The new method developed in this paper will demonstrate that gas was being expelled into the atmosphere when the cement slurry containing gas generating additives was tested under ambient conditions. The procedure developed here will demonstrate that gas was entrained within the cement matrix.\u0000 An initial assessment of varying particle sizes of coated aluminum granules in a caustic solution showed that a consistent volume of gas was released. This working hypothesis was substantiated by measuring the volume of gas released within a closed system using a data logger. To ensure validation of this procedure, in-situ gas producing cement slurries were measured utilizing this method. With this experimental setup, quantifying the measurement of released gas from the cement matrix confirmed that variation of particle size does not affect performance.\u0000 Gas volume displacement measurement using an inverted graduated cylinder was set up to quantitatively determine the volume of the released gas within the cement matrix with the utilization of a stir plate. The system utilized polytetrafluorethylene tubing to transport the released gas that was produced from the matrix to the inverted graduated cylinder that was filled with deionized water. The released gas volume was assessed by displacement.\u0000 The enclosed dynamic apparatus with an inverted graduated cylinder was fitted with a paddle. This experimental setup enabled a homogenous blend and prevented void formation as the matrix was continuously agitated. This enclosed dynamic apparatus prevented the release of gas to be consumed by the atmosphere and gas entrainment. With the utilization of this procedure, the functionality of the gas expansion additive was fully attained without hindering performance and the gas release profile was controlled. This technique exhibited reproducibility and the theoretical gas release volumes were as calculated.\u0000 After placement, the cement systems must preserve their integrity and provide zonal isolation during the life of the well. It has been possible to accommodate a wide range of conditions through the development of cementing add","PeriodicalId":10983,"journal":{"name":"Day 1 Mon, April 08, 2019","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82884910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}