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Micropropagation of Eucalyptus grandis×*** AEC 224 clone

Journal of Forestry Research 2017年第1期28卷 29-39页

作者： cassiana de oliveira Juliana degenhardt-Goldbach Gisela Manuela de Franca Bettencourt Erika Amano Luziane Franciscon Marguerite Quoirin department of Plant Science Federal University of Parana1540Rua dos FuneionariosCuritibaParanaBrazil Embrapa-Forest 111Estrada da RibeiraColomboParanaBrazil department of Technology Federal University of Parana210avenida CelFrancisco Heraiclito dos SantosCuritibaParanaBrazil department of Botany Federal University of Parana210avenida CelFrancisco Heraiclito dos SantosCuritibaParanaBrazil

Genetic transformation systems require protocols that allow regenerating transgenic plants from transformed tissues. This study aimed to establish a protocol for indirect organogenesis in leaf explants of a Eucalyptus grandis x E. urophylla AEC 224 clone. During callogenesis stage, several concentrations of NAA and then NAA or 2,4-D combined with TDZ were tested in JADS culture medium for 30 days, followed by subculture of the explants in the regeneration medium, containing 5.0 μM BA and 0.5 μM NAA for another 30 days. In these media, the explant oxidation rate was high （95 %）. Thus, in order to reduce oxidation, different ;culture media were compared： WPM, MS, JADS and modified QL, followed by explant transfer onto regeneration medium. The highest percentage of regeneration and the lowest oxidation rate were achieved on WPM medium. Then, NAA and 2,4-D were tested in combination with TDZ and also TDZ and BA combined with NAA in WPM medium. The most efficient culture media in terms of shoot regeneration were WPM supplemented with 0.25 μM TDZ and 0.1μM NAA during 30 days for callus induction and then with 5.0 μM BA and 0.5 μM NAA for another 30 days. This protocol yielded a regeneration rate of 43 %, with a low oxidation of tissues. A rooting experiment was conducted using half strength MS medium and comparing three concentrations of IBA （2.46, 4.90 and 7.35μM）. The highest rooting percentage （35 %） was obtained on medium containing 2.46μM IBA. Once the shoots were rooted, acclimatization in a greenhouse was not challenging and plant survival reached 100 %.

关键词： Callogenesis Eucalyptus urograndis Organogenesis WPM culture medium

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Human occupation explains species invasion better than biotic stability:evaluating Artocarpus heterophyllus Lam.(Moraceae;jackfruit)invasion in the Neotropics

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Journal of Plant Ecology 2018年第3期11卷 465-474页

作者： Guilherme de oliveira Laboratório de Biogeografia da Conservação Universidade Federal do Recôncavo da Bahia(UFRB)Centro de Ciências AgráriasAmbientais e Biológicas(CCAAB)Setor de Ciências BiológicasRua Rui Barbosa 710Centro 44380-000Cruz das AlmasBahiaBrasil

Aims Biological invasions are recognized to put native species in risk of *** this study,I tested whether the invasion of Artocarpus heterophyllus Lam.(Moraceae;jackfruit)in the Neotropics was explained by its biotic stability,an intrinsic force,or by human occupation,an extrinsic *** I used an ensemble framework combining 12 ecological niche models(ENMs)and 4 atmosphere-ocean general circulation *** were constructed for the pre-industrial time period in the Indo-Malaya biogeographic region,the native habitat of ***,and were then projected to past(last glacial maximum,21000 years ago and mid-Holocene,6000 years ago)and future(end of century,2080)*** ENMs were used to establish the biotic stability of ***-phyllus in areas where it was predicted to be present concomitantly within these four time *** biotic stability was projected onto the Neotropics,and then I used a null model and logistic regression to test what the main driver of *** *** Findings In general,the presence of *** in the Neotropics was not explained by biotic stability,tested by the null ***,human occupation explained much of its presence in the invaded habitat,once all standardized coefficients related to this driver was significant positive in the logistic *** on these results,humans sustained the presence of ***-erophyllus in the Neotropics,probably because of the additive influences of propagule pressure and habitat ***,the recommendation is that the cultivation of *** in the Neotropics must be regulated and supervised,primarily near reserve areas.

关键词： ecological niche models(ENMs) ensemble forecasting climate change habitat disturbance propagule pressure

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Assessment of alterability of basalt used for riprap by petrographic examination

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Journal of Rock Mechanics and Geotechnical Engineering 2019年第1期11卷 208-213页

作者： Maria Heloisa Barros de oliveira Frascá MHB Geological Services

All engineering projects consist of several steps, and one of the main tasks is to identify and characterize the most important features of rock types that will be excavated, crushed, or mined for any particular usage purpose, from a single residential building to major works of infrastructure. Laboratory investigation on engineering geology is thus conducted in order to determine the most relevant rock properties when designing structures such as mining shafts, tunnels, buildings, or reservoir dams to be built in sites associated with rocks. A wide range of laboratory tests is available, making the correct choice of test methods greatly relevant to determine the key property for the planned use of the rock. This paper is an illustrative case of laboratory testing of basaltic rocks to be used as riprap in a reservoir dam. It shows the important role of the petrographic study carried out to analyze the distribution pattern of smectite clay minerals. Test results are explained for the assessment of rock alterability, an essential aspect for the selection of the most suitable basalt variety for the envisaged conditions of use.

关键词： Rock properties Laboratory testing Test methods Petrographic analysis Smectite clay minerals Basaltic rocks Accelerated weathering tests Alterability

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ASYMPTOTIC HOMOGENIZATION IN A PARABOLIC SEMILINEAR PROBLEM WITH PERIODIC COEFFICIENTS AND INTEGRABLE INITIAL DATA

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Acta Mathematica Scientia 2013年第5期33卷 1275-1292页

作者： Rogerio Luiz Quintino de oliveira JUNIOR Instituto de Matema'tica e Estat' stica Universidade do Estado do R.de Janeiro Rua S ao Francisco Xavier524 - Pavilha o Reitor Joa o Lyra Filho 6oandar bl.B 20559-900 Rio de Janeiro R.J. Brazil

In this paper, we study the large time behavior of solutions of the parabolic semilinear equation δtu-div（a（x）△↓u） = -｜u｜^αu in （0,∞） × R^N, where α 〉 0 is constant and a∈ Cb^1（R^N） is a symmetric periodic matrix satisfying some ellipticity *** an integrable initial data u0 and α ∈ （2/N, 3/N）, we prove that the large time behavior of solutions is given by the solution U（t, x） of the homogenized linear problem δtU-div（a^h△↓U）=0,U（0） = C, where a^h is the homogenized matrix of a（x）, C is a positive constant and δ is the Dirac measure at 0.

关键词： homogenization similinear parabolic equation integrable initial data matrix with periodic coefficient large time behavior

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Supercritical fluid technology as a sustainable alternative method for textile dyeing:An approach on waste,energy,and CO_(2)emission reduction

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Journal of Environmental Sciences 2024年第6期140卷 123-145页

作者： Carlos Rafael Silva de oliveira Patrícia Viera de oliveira Leandro Pellenz Catia Rosana Lange de Aguiar Afonso Henrique da Silva Júnior Federal University of Santa Catarina Textile Engineering Department2514 João Pessoa St.BlumenauSC89036-004Brazil Federal University of Santa Catarina Chemical Engineering DepartmentS/n Biotério Central St.FlorianópolisSC88040-900Brazil

The clothing industry is considered one of the most polluting industries on the planet due to the high consumption of water,energy,chemicals/dyes,and high generation of solid waste and *** with environmental concerns,the textile ennoblement sector is the most critical of the textile production chain,especially the traditional dyeing *** an alternative to current problems,dyeing with supercritical CO_(2)(scCO_(2))has been presented as a clean and efficient process for a sustainable textile *** fluid dyeing(SFD)has shown a growing interest due to its significant impact on environmental preservation and social,economic,and financial *** main SFD benefits include economy and reuse of non-adsorbed dyes;reduction of process time and energy expenditure;capture of atmospheric CO_(2)(greenhouse gas);use and recycling of CO_(2)in SFD;generation of carbon credits;water-free process;effluent-free process;reduction of CO_(2)emission and auxiliary *** being still a non-scalable and evolving technology,SFD is the future of *** review presented a comprehensive overview of the environmental impacts caused by traditional processes and confronted the advantages of *** SFD technique was introduced,along with its latest advances and future *** and environmental gains were also discussed.

关键词： Textile industry Supercritical dyeing Sustainable processes Water free dyeing Energy saving Cleaner production

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Susceptibility of Large Wind Power Plants to Voltage Disturbances-Recommendations to Stakeholders

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Journal of Modern Power Systems and Clean Energy 2022年第2期10卷 416-429页

作者： Roger Alves de oliveira Math H.J.Bollen the Electric Power Engineering Group Lulea University of TechnologySkellefteaSweden

Sufficient fault ride-through(FRT)of large wind power plants(WPPs)is essential for the operation security of transmission *** majority of studies on FRT do not include all disturbances originating in the transmission system or the disturbances irrelevant to the operation *** on the knowledge of power quality,this paper provides a guide to stakeholders in different aspects of FRT for wind turbines(WTs)and *** paper details the characteristics of the most common disturbances originated in the transmission system,how they propagate to the WT terminals,and how they impact the dynamic behavior of a large *** paper shows that the details of the voltage disturbances,not only in the transmission system,but also at the WT terminals,should be taken into ***,a detailed representation or characterization of voltage dips is important for FRT studies,despite that the simplified models used in the literature are *** paper strongly recommends that distinct events and additional characteristics such as the phase-angle jump and oscillations in the transition segments should be considered in FRT analysis.

关键词： Wind power generation wind farm power quality fault ride-through(FRT) low voltage ride-through(LVRT)

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Partition coefficient prediction of Baker's yeast invertase in aqueous two phase systems using hybrid group method data handling neural network

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Chinese Journal of Chemical Engineering 2017年第5期25卷 652-657页

作者： Carlos Eduardo de Araújo Padilha Sérgio Dantas de oliveira Júnior Domingos Fabiano de Santana Souza Jackson Araújo de oliveira Gorete Ribeiro de Macedo Everaldo Silvino dos Santos Laboratory of Biochemical Engineering Chemical Engineering DepartmentFederal University of Rio Grande do Norte (UFRN)

A hybrid GMDH neural network model has been developed in order to predict the partition coefficients of invertase from Baker's yeast. ATPS experiments were carried out changing the molar average mass of PEG(1500–6000 Da), p H(4.0–7.0), percentage of PEG(10.0–20.0 w/w), percentage of MgSO_4(8.0–16.0 w/w), percentage of the cell homogenate(10.0–20.0 w/w) and the percentage of MnSO_4(0–5.0 w/w) added as cosolute. The network evaluation was carried out comparing the partition coefficients obtained from the hybrid GMDH neural network with the experimental data using different statistical metrics. The hybrid GMDH neural network model showed better fitting(AARD = 32.752%) as well as good generalization capacity of the partition coefficients of the ATPS than the original GMDH network approach and a BPANN model. Therefore hybrid GMDH neural network model appears as a powerful tool for predicting partition coefficients during downstream processing of biomolecules.

关键词： Partitioning Invertase Aqueous Two Phase System GMDH Neural network

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Distribution of trace metals and Pb isotopes in bottom sediments of the Murucupi River,North Brazil

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International Journal of Sediment Research 2016年第3期31卷 226-236页

作者： Diomar Cavalcante oliveira Jean Michel Lafon Marcelo de oliveira Lima Institute of Geosciences Federal University of Pára Environmental Section Evandro Chagas Institute

The Murucupi River belongs to the hydrographic network of the Para River estuary,at the southern portion of the Amazon River mouth,which consists of a fluvial-marine transitional zone under strong impact of both tidal and fluvial *** geochemical results obtained for bottom sediments from the Murucupi River,the Arrozal Channel,and the Para River indicate a natural variation of Pb,Cr,Cu,Zn,and Ni content among these water ways with no significant anthropogenic *** to the threshold effects level(TEL),the contents of trace metals do not offer risk to the local *** contrast,the differences in the Pb isotopic composition of sediments in the Murucupi River,the Arrozal Channel,and the Para River are *** isotopic signatures indicate an anthropogenic contribution of Pb in the Murucupi River originating from the domestic effluents of urban centers;industrial waste represented by red mud is not *** results demonstrate that the Pb isotopic signature is a prospective indicator for future contamination of bottom sediments by trace metals and is useful for identifying contaminants among the possible anthropogenic sources.

关键词： Bottom sediments Pb isotopes Trace metals Murucupi River Barcarena

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Ecophysiology and multivariate analysis for production of Tachigali vulgaris in Brazil:Influence of rainfall seasonality and fertilization

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Journal of Forestry Research 2023年第5期34卷 1289-1305页

作者： Pedro Henrique oliveira Simoes Candido Ferreira de oliveira Neto Manoel Tavares de Paula Dênmora Gomes de Araújo Rodrigo Silva do Vale Joao Olegário Pereira de Carvalho Universidade Federal de Mato Grosso Campus Universitario de SinopSinop 78550728Mato GrossoBrazil Universidade Federal Rural da Amazonia Campus BelemBelem 66077830ParaBrazil Universidade do Estado do Para Centro de Ciencias Naturais e TecnologiaBelem 66095015ParaBrazil Universidade Federal Rural da Amazonia Campus Capitao-PocoCapitao Poco 68650000ParaBrazil

Studies on fertilization management of species native to the Amazon for energy plantations contribute to the diversity of species use and reduce biological risk due to the excessive use of clones or hybrids of *** study evaluates the effect of precipitation seasonality and phosphorus and potassium fertilization on gas exchange in a Tachigali vulgaris *** levels of P(zero,65.2,130.4 kg ha^(-1))and three of K(zero,100.0,200.0 kg ha^(-1))were applied in a 3×3 factorial randomized block *** exchange measurements were conducted in April and November *** low rainfall,high irradiance period,photo synthetic rates were up to four times higher than in the high rainfall period,reaching 20.3μmol m^(-2)s^(-1)in the treatment with 130.4 g kg^(-1)of P and 100.0 g kg^(-1)of *** analysis and principal component analysis reduced the initial eight gas exchange variables to two and three principal components in periods of high and low rainfall,*** multivariate method used in this study readily identified variations in the variables as a function of rainfall,with high reliability in explaining the data set.

关键词： Photosynthesis rate Stomatal conductance Principal component analysis Factor analysis Tachigali vulgaris

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Recovery of polyphenols from camu-camu(Myrciaria dubia ***)depulping residue by cloud point extraction

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Chinese Journal of Chemical Engineering 2018年第12期26卷 2471-2476页

作者： Carlos Eduardo de Araujo Padilha Juliana Chris Silva de Azevedo Francisco Caninde de Sousa Junior Sergio Dantas de oliveira Junior Domingos Fabiano de Santana Souza Jackson Araujo de oliveira Gorete Ribeiro de Macedo Everaldo Silvino dos Santos Laboratory of Biochemical Engineering Chemical Engineering department Federal University of Rio Grande do Notre(UFRN)NatalRNBrazil Laboratory of Food Bioactive Compounds and Dairy Technology Chemical Engineering DepartmentFederal University of Rio Grande do Notre(UFRN)NatalRNBrazil

In this study the potential of cloud point extraction formed by a non-ionic surfactant was used in order to separate polyphenols from industrial residues of camu-camu. The effects of operational conditions of the cloud point extraction(CPE) on the polyphenol recovery and volumetric ratio were investigated. The results showed a maximum recovery of 95.71% that was obtained using 7.0 wt% Triton X-114, native pH(3.25), and 80 wt%polyphenol extract at 30 °C. The use of cloud point extraction was successful to recover the polyphenols from agroindustrial residue since it is a simple as well as of low-cost technique.

关键词： Cloud point extraction Recovery Polyphenols Camu-camu depulping residue

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