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Performance index: An expeditious tool to screen for improved drought resistance in the Lathyrus genus

journal of Integrative Plant Biology 2014年第7期56卷 610-621页

作者： Susana Silvestre Susana de Sousa araújo Maria Carlota Vaz Patto jorge Marques da Silva Center for Biodiversity Functional and Integrative Genomics(BioFIG)and Department of Plant BiologyFaculty of ScienceUniversity of LisbonCampo Grande Animal and Veterinary Sciences Research Center Tropical Research Institute(IICT‐CVZ)Faculty of Veterinary Medicine Plant Cell Biotechnology Lab Institute for Chemistry and Biological Technology António Xavier-New University of Lisbon(ITQB‐UNL)

Some species of the Lathyrus genus are among the most promising crops for marginal lands, with high resilience to drought, flood, and fungal diseases, combined with high yields and seed nutritional value. However, lack of knowledge on the mechanisms underlying its outstanding performance and methodologies to identify elite genotypes has hampered its proper use in breeding. Chlorophyl a fast fluorescence transient （JIP test）, was used to evaluate water deficit （WD） resistance in Lathyrus genus. Our results reveal unaltered photochemical values for al studied genotypes showing resistance to mild WD. Under severe WD, two Lathyrus sativus genotypes showed remarkable resilience maintaining the photochemical efficiency, contrary to other genotypes studied. Performance index （PIABS） is the best parameter to screen genotypes with improved performance and grain production under WD. Moreover, we found that JIP indices are good indicators of genotypic grain production under WD. Quantum yield of electron transport （wEo） and efficiency with which＆trapped excitons can move electrons further than QA （c0） revealed as important traits related to improved photosyn-thetic performance and should be exploited in future Lathyrus germplasm improvements. The JIP test herein described showed to be an expeditious tool to screen and to identify elite genotypes with improved drought resistance.

关键词： Grain production JIP test Lathyrus germplasm photochemical performance water deficit

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An Adaptive Load Stepping Algorithm for Path-Dependent Problems Based on Estimated Convergence Rates

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Computer Modeling in Engineering & Sciences 2017年第3期113卷 325-342页

作者： M.T.C.araújo Fernandes C.O.Cardoso W.J.Mansur Civil Engineering Department/COPPE/Federal University of Rio de Janeiro Ilha do FundaoP.B.6850621945-970 Rio de JaneiroRJBrazil Petrobras/Cenpes Av.Horácio Macedo950Ilha do Fundao21941-915 Rio de JaneiroRJBrazil Civil Engineering Department/COPPE/Federal University of Rio de Janeiro Ilha do FundaoP.B.6850621945-970 Rio de JaneiroRJBrazil

A new adaptive(automatic)time stepping algorithm,called RCA(Rate of Convergence Algorithm)is *** new algorithm was applied in nonlinear finite element analysis of path-dependent *** step size is adjusted by monitoring the estimated convergence rate of the nonlinear iterative *** RCA algorithm is relatively simple to implement,robust and its performance is comparable to,and in some cases better than,the automatic load incrementaion algorithm existent in commercial *** about the convergence rate of nonlinear iterative processes,an estimation of the rate and a study of the parameters of the RCA algorithm are *** show the capacity of the algorithm to adjust the increment size,detailed discussions based on results for different limit load analyses are *** results obtained by RCA algorithm are compared with those by ABAQUS?,one of the most powerful nonlinear FEA(Finite Element Analysis)commercial software,in order to verify the capability of RCA algorithm to adjust the increment size along nonlinear analyses.

关键词： Rate of convergence nonlinear automatic load incrementation limit load

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Long-lasting effects of unplanned logging on the seed rain of mixed conifer-hardwood forests in southern South America

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journal of Forestry Research 2021年第4期32卷 1409-1418页

作者： Alexandre F.Souza Angela Luciana deÁvila Maristela M.araújo Solon jonas Longhi Departament of Ecology CBRio Grande Do Norte Federal UniversityCentral CampusLagoa NovaNatal 59072-970RNBrazil Forest Growth Department Freiburg Im BreisgauBaden-Vurtemberga Forest Research InstituteWonnhaldestraße 4Freiburg im Breisgau 79104Germany Forest Engineering Postgraduate Program Forestry DepartmentSanta Maria Federal UniversityRoraima Av.s/nCamobiSanta Maria 97105-900RSBrazil

Understanding the effects of disturbance on seed rain is critical to predict changes in forest species composition and *** effects on seed rain in a mixed conifer-hardwood forest complex in southern Brazil were *** year of seed rain data were collected from a large-scale observational experiment in logged and protected forests and quantity and average seed size weighted by species abundance(CWM)were compared between old-growth and logged stands 55 years after logging *** these data,variations in frequency of functional groups of species in the seed rain were examined to see if they could be attributed to *** show that the number of seeds per trap was highly right-skewed,ranging from 13 to 12,788 seeds per trap in one *** rain was affected by logging history,with seed traps in old-growth plots receiving significantly less seeds than traps in logged *** species included mean seed size weighted by species abundance were significantly smaller in logged than in old-growth *** difference persisted after the exclusion of arawcaria a large-seeded pioneer which was intensively logged,although the difference of seed size between the two forest classes was greatly *** abundance in the seed rain differed significantly from the established tree community,between logged and oldgrowth *** composition of the seed rain was much more variable than the composition of the established tree community and its points more scattered over the ordination space than the points corresponding to the protected *** number of collected seeds across different functional groups of species significantly differed between logged and old-growth *** seed rain of logged forests reflects their arrested succes sion as indicated by reduced abundance of functional groups such as pioneers,large seeded pioneers and A raucaria,as well as reduced functional diversity.S eed rain differences between logged and old-

关键词： Arrested succession Brazil Logging Long-lived pioneers Seed rain

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Effectiveness of different biochars in remediating a salt-affected Luvisol in Northeast Brazil

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Biochar 2021年第2期3卷 149-159页

作者： Wallace Melo dos santos Maria Isidoria Silva Gonzaga joséAiron da Silva AndréQuintão de Almeida joséCarlos de Jesus santos Thomas Antonio Silva Gonzaga Idamar da Silva Lima EloáMoura araújo Water Resources Graduate Program Federal University of SergipeSão CristóvãoSE 49100‑000Brazil Agronomy Department Federal University of SergipeSão CristóvãoSE 49100‑000Brazil Agriculture Engineering Department Federal University of SergipeSão CristóvãoSE 49100‑000Brazil University of Notre Dame Notre DameIN 46556USA Soils and Agricultural Engineering Department Federal University of ParanáCuritibaPR 80060‑000Brazil

Biochar has been proposed as a soil amendment to reclaim salt-affected ***,the evaluation of the different biochar types in these soils is essential due to the significant variation among biochar *** this study,biochars from sugarcane bagasse(SB),orange bagasse(OB),and corncob(CB)were applied alone and in the presence of gypsum(G)to test their potential to remediate a highly degraded saline-sodic soil in Brazil´s Northeast *** that,we conducted a laboratory column-leaching experiment and a greenhouse *** the column-leaching test,we analyzed the sodium adsorption ratio(SAR),the electrical conductivity of the saturation extract(ECe),the concentrations of major ions,and the exchangeable sodium percentage(ESP).Maize plants were grown in the leached soil in a ***-and corncob-derived biochars were more efficient than gypsum in reducing the soil salinity,bringing the indicators below threshold values,and optimizing soil reclamation *** ECe,SAR,and ESP were reduced to 3.42 dS m−1,1.64(mmolc dm−3)0.5 and 4.86%,respectively,in the SB treatment;and to 3.19 dS m−1,0.88(mmolc dm−3)0.5 and 2.53%,respectively,in the CB *** bagasse biochar did not effectively reduce the salinity *** biochar treatments improved seed germination and plant *** SB,CB,SBG,and CBG treatments increased plant height(478–558%),shoot mass(783–983%),and root mass(386–500%),***,the application of SB and CB is an effective alternative to remediate saline-sodic soils and to reduce the impact of soil salinity in the environment.

关键词： Biochar Soil remediation Soil salinity Corn growth

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Numerical Solution for a Non-Fickian Diffusion in a Periodic Potential

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Communications in Computational Physics 2013年第2期13卷 502-525页

作者： Adérito araújo Amal K.Das Cidália Neves Ercília Sousa CMUC Department of MathematicsUniversity of Coimbra3001-454 CoimbraPortugal Department of Physics DalhousieUniversityHalifaxNova Scotia B3H3J5Canada ISCAC Polytechnic Institute of Coimbra3040-316 CoimbraPortugal

Numerical solutions of a non-Fickian diffusion equation belonging to a hyperbolic type are presented in one space *** Brownian particle modelled by this diffusion equation is subjected to a symmetric periodic potential whose spatial shape can be varied by a single *** consider a numerical method which consists of applying Laplace transform in time;we then obtain an elliptic diffusion equation which is discretized using a finite difference *** analyze some aspects of the convergence of the *** results for particle density,flux and mean-square-displacement(covering both inertial and diffusive regimes)are presented.

关键词： Numerical methods Laplace transform telegraph equation periodic potential non-Fickian diffusion

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Abiotic stress on seed germination and plant growth of Zeyheria tuberculosa

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journal of Forestry Research 2023年第5期34卷 1511-1522页

作者： Robson Luis Silva de Medeiros rinaldo Cesar de Paula joao Vitor Oliveira de Souza joao Pedro Peixoto Fernandes Department of Agricultural Sciences School of Agricultural and Veterinarian SciencesSao Paulo State University(Unesp)14884-900JaboticabalSao PauloBrazil

Zeyheria tuberculosa(Vell.)Bureau ex *** among the Brazilian flora threatened with *** has high-quality wood and can be used to recover herbicidecontaminated ***,abiotic stresses can harm seed germination and seedling development under adverse conditions and need to be understood to improve autochthonous or indigenous biodiversity conservation and strengthen reforestation *** study evaluated the effects of temperature,water and saline stress on *** seed germination and water stress on seedling *** laboratory experiments evaluated germination under:(1)different temperatures(20,25,30,35 and 40℃);(2)different water potentials simulated with polyethylene glycol(PEG6000)at 25 and 30℃;and,(3)different osmotic potentials simulated with NaCl at 25 and 30℃.In addition,a greenhouse experiment subjected seedlings to five water regimes(20%,35%,50%,65%and 80%of maximum substrate water holding capacity).In the laboratory,seedling biometry and germination were evaluated,while physiological and morphological parameters were assessed in the *** potential of seeds increased at 25 and 30℃.Germination and vigor decreased as water and saline stresses *** tolerance thresholds for water and salt stresses were-0.6 and-0.4 MPa,*** the greenhouse,the most restrictive water regimes reduced seedling physiological and morphological *** development was compromised at moisture levels below50%field capacity.

关键词： Bignoniaceae Climate change Ipê-felpudo Ipê-preto Water stress

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Phenolic compounds in peel,seed and cold pressed pink pepper(Schinus terebinthifolia R.)oil and bioaccessibility of peel using a digestion model with intestinal barrier simulation

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Food Bioscience 2022年第5期49卷 701-709页

作者： Tuania Soares Carneiro Maria da Conceiçao Prudencio Dutra D´ebora Andrade Lima Ana Júlia de Brito araújo Patrícia Beltrao Lessa Constant Marcos dos santos Lima Federal University of Sergipe Department of Food TechnologyPROCTASao Crist´ovaoSEBrazil Federal Institute of Sertao Pernambucano Department of Food TechnologyLiquid Chromatography LaboratoryJardim Sao Paulo-CEP56314-522PetrolinaPEBrazil

Pink pepper-PP(Schinus terebinthifolius R.)has been used as a flavoring agent,an antioxidant,and a natural *** have focused on obtaining essential oils and antioxidants from the whole *** studies have evaluated the quantification of phenolics and bioaccessibility of the fruit *** quantification of bioactive compounds from PP oil obtained by cold pressing are also *** this work,21 phenolics(HPLC-DAD)and antioxidant capacity(AOX)were quantified in peel,seed and cold-pressed oil of PP,in two *** bioactive and antioxidant potential of the fractions studied in PP were peel>oil>*** peel possessed the richest fraction;in particular,gallic acid(2819-3129 mg/kg),procyanidin B2(720-760 mg/kg),catechin(528-594 mg/kg),kampferol-3-glucoside(166-184 mg/kg)peonidin-3-O-glucoside(55.3-58.5 mg/kg)and pelargonidin 3-O-glucoside(17.8-20.2 mg/kg),and high *** was the second richest fraction with highlight gallic acid(735 mg/kg),catechin(103-105 mg/kg),procyanidin A2(19 mg/kg)and chlorogenic acid(5 mg/kg).PP peels were submitted to in vitro digestion model with intestinal barrier simulation,where hesperidin(23352%),naringenin(273%)and catechin(84%)were the most bioaccessible *** present study shows that the PP peel has the greatest bioactive ***,obtaining the oil by cold pressing fruit is an alternative to be explored.

关键词： Pink pepper Lipid technology Phytochemicals Bioaccessibility

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Epidermal growth factor receptor and metastatic colorectal cancer:Insights into target therapies

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World journal of Gastroenterology 2013年第38期19卷 6315-6318页

作者： Ramon Andrade de Mello Andrea Marin Marques António araújo Department of Medical Oncology Portuguese Oncology Institute4200-072 PortoPortugal Department of Medicine FMUP-Faculty of MedicineUniversity of Porto4200-319 PortoPortugal Department of Medicine Centro Hospitalar Médio Ave4780 PortoPortugal

Colorectal cancer(CRC)has high incidence and mortality *** 2012,CRC was the second most prevalent cancer among males(9%)and the third among females(8%).In recent decades,standard chemotherapies protocols combining 5-fluorouracil,leucovorin,irinotecan and oxaliplatin were important for improve survival in this set of ***,biological drugs throughout epidermal growth factor receptor(EGFR)pathways showed interesting results in metastatic disease(mCRC)control when in association to standard chemotherapy *** and panitumumab are two cornerstones for mCRC treatment and are both approved in Europe and United States based on previous results phaseⅢ*** paper will briefly summarize those anti-EGFR therapies framework in mCRC and discusses some issues in this regard.

关键词： Colorectal cancer Epidermal growth factor receptor KRAS mutation Chemotherapy Cetuximab Panitumumab

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基于激光雷达的移动机器人实时位姿估计方法研究

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自动化学报 2004年第5期30卷 679-687页

作者：杨明董斌王宏张钹 Helder araújo 清华大学智能技术与系统国家重点实验室北京100084 葡萄牙Coimbra大学系统与机器人研究所

位姿估计是移动机器人研究中的一个关键问题,对于运动目标跟踪、机器人导航、地图生成等具有重要意义.提出了一种基于二维激光雷达的实时位姿估计方法,包括基于Hough变换的切线角度直方图算法和迭代切线加权最近点算法两部分.两种算法... 详细信息

位姿估计是移动机器人研究中的一个关键问题,对于运动目标跟踪、机器人导航、地图生成等具有重要意义.提出了一种基于二维激光雷达的实时位姿估计方法,包括基于Hough变换的切线角度直方图算法和迭代切线加权最近点算法两部分.两种算法的结合和切线信息的引入,有效地解决了传统方法无法解决的局部最小值、类孔径、大计算量等问题.仿真数据和室外环境实际数据的大量实验结果表明它具有精度高、速度快、适用性广和对噪声、遮挡和类孔径问题鲁棒性高的特点.

关键词：位姿估计角度直方图迭代最近点切线信息移动机器人激光雷达

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Impact of Temporal Population Distribution on Earthquake Loss Estimation:A Case Study on Sylhet,Bangladesh

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International journal of Disaster Risk Science 2014年第4期5卷 296-312页

作者： Sharmin ara Department of Urban and Regional Planning Chittagong University of Engineering and TechnologyChittagong 4349Bangladesh

To estimate human loss in an earthquake-prone area, it is necessary to analyze the role played by the spatiotemporal distribution of the area’s resident population. In order to evaluate earthquake impact, this article focuses on the spatiotemporal distribution of population and five scenario earthquakes that form the basis for loss estimation in the city of Sylhet, Bangladesh. Four temporal contexts(weekday, weekly holiday, the 30 days of Ramadan, and strike days) expand the more typical daytime and nighttime settings in which to examine hazard risk. The population distribution for every 2 hour interval in a day is developed for each type of day. A relationship between the occupancy classes and average space(persons per 100 m^2)is used to distribute people in each building regardless of building locations. A total daytime and nighttime population is obtained for each building and the estimated nighttime population is used to model the population for four temporal scenarios in a year based on different factors and weights. The resulting data are employed to estimate population loss for each of the temporal and earthquake scenarios. This study used building-specific human vulnerability curves developed by the Central American Probabilistic Risk Assessment(CAPRA) to obtain possible loss of life estimates. The results reveal that there is a high positive correlation between the spatiotemporal distribution of population and the potential number of casualties.

关键词： Bangladesh CAPRA Distribution modeling Earthquake loss estimation Spatiotemporal population distribution Temporal scenarios

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