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1004篇 您的检索式:作者名="A FREITAS"
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1Effect of physiological integration in self/non-self genotype recognition on the clonal invader Carpobrotus edulis显示文摘Aims biological invasions represent one of the most important threats to the conservation of biodiversity;however,the mechanisms underlying successful invaders remain unsolved.many of the most aggres-sive invaders show clonal growth,and capacity for clonal integration has been pointed out recently as an important trait explaining the success of invasive plants.We aim to determine the role of physi-ological integration in the capacity for self/non-self genotype recog-nition in the clonal invader Carpobrotus edulis and the implications of this capacity for the expansion of this aggressive invader.Methods We used connected and severed ramets of identical or different gen-otype and we determined the capacity for self/non-self recognition by comparing changes in biomass partitioning to avoid competition for resources between pairs of ramets.Important Findings Physiological integration allowed self/non-self genotype recogni-tion in the invader C.edulis.results showed a significant effect of physiological integration on the biomass allocated to roots by genetically identical ramets:older ramets specialize in acqui-sition of soil-based resources and younger ramets specialize in lateral expansion.this specialization could be considered a form of division of labour,which reduce intra-genotype competition.this is the first evidence that division of labour could be inter-preted as a form of self/non-self recognition between genetically identical ramets.Capacity for self/non-self discrimination could contribute to increase the colonization capacity of the aggressive invader C.edulis.this is the first study showing an association between self/non-self recognition and invasiveness in a clonal plant.Sergio R.Roiloa Susana Rodríguez-Echeverría Helena Freitas 2014Journal of Plant Ecology2014,7,4:5
2二维导流管喷动床的流动特征显示文摘带导流管的二维喷动床(2-DSBDP)是传统喷动床的改进型式,矩形床内设置的与床同厚的垂直导流管可以控制固体颗粒的循环速率, 同时使下行区中的气固移动床维持平推流. 本文实验测定了不同表观气速、床层高度、固体颗粒与气体入口尺寸时, 二维导流管喷动床的床压降及相应的空隙率,藉以阐述2-DSBDP的流动特征.罗保林 Freitas L A P Lim C J Grace J R 2000化工冶金2000,21,4:5
3Data mining with an ant colony optimization algorithm显示文摘Parpinelli R S Lopes H S Freitas A A 2002IEEE Trans Evolutionary Compute2002,6,4:1
4Genetic diversity of the macaronesian leafy liverwort porella canariensis inferred from rapd markers显示文摘Freitas H Brehm A 2001Heredity2001,92,:1
5The effect of Phyllanthus niruri on urinary inhibitors of calcium oxalate crystallization and other factors associated with renal stone formation 显示文摘Freitas A M Schor N Boim M A 2002BJU lnt2002,89,9:1
6Triamcinolone acetonide mouth rinses for treatment of erosive oral lichen planus :efficacy and risk of ftmgal over - infection显示文摘Gonzalez - Garcia A Diniz - Freitas M Gandara - Vila P 2006Oral Dis2006,12,6:1
7Procyanidins as antioxidants and tumor cell growth modulators 显示文摘Faria A Calhau C de Freitas V 2006J Agric Food Chem2006,54,6:1
8A Hybrid Decision Tree/Genetic Algorithm Method for Data Mining显示文摘Carvalho D R Freitas A A 2004Information Sciences2004,163,3:1
9Impacts of AC Generators and DSTATCOM devices on the dynamic performance of distribution systems显示文摘Freitas W Morelato A Wilsun Xu 2005IEEE Transactions on Power Delivery2005,20,2:1
10Sequential Monte Carlo methods to train neural network models 显示文摘De FREITAS J F G NIRANJAN M GEE A H 2000Neural Computation2000,12,4:1
11Expression of muscarinic and dopaminergic receptors and monoamine levels frontal cortex of epileptic rats 显示文摘Freitas RM Oliveira Ade A Vasconcelos SM 2006Pharmacol Biochem Behav2006,83,2:1
12Small-disturbance voltage stability of distribution systems with induction generators显示文摘FREITAS W DASILVA L C P MORELATO A 2005IEEE Transactions on Power System2005,20,3:1
13A model for extremely heterogeneous clutter显示文摘FRERY A C MULLER H FREITAS C C 1997IEEE Transactions on Geoscience and Remote Sensing1997,35,3:1
14Recovery of phenol from aqueous solutions using liquid membranes with cyanex 923显示文摘Reis M T A De freitas O M Ismael M R C 2007J Membrane Sci2007,305,1:1
15Polymerization of ethylene: some aspects of metallocene cata- lyst stabilization under homogeneous and heterogeneous reac- tion conditions显示文摘de Freitas A J D dos Santos J H Z Meneghetti S M P 2011J Appl Poiym Sci2011,119,5:1
16The effect of microstructure and environment on fatigue crack growth in 7049 alloy at negative stress ratios显示文摘Fonte Mda Romeiro F Freitas Mde Stanzl-Tschegg S E Tchegg E K Vasudevan A K 2003Int J Fatigue2003,25,:1
17Microbial populatiot response to changes of the operating conditions in a dynamic nutrient-removal sequencing batch reactor显示文摘Freitas F Temudo M Reia M A M 2005Bioproces and Biosystems Engineering2005,28,3:1
18The polarimetrie G distribution for SAR data analysis 显示文摘Freitas C C Frery A C Correia A H 2005Environmetries2005,16,1:1
19Neurite outgrowth is impaired on HSP70-positive astrocytes through a mechanism that requires NF-kappa B activation显示文摘de Freitas M S Spohr T C Benedito A B 2002Brain Res2002,958,:1
20Isolation and characterization of soluble sulfated polysaccharide from the red seaweed Gracilaria cornea 显示文摘Melo M R S Feitosa J P A Freitas A L P 2002Carbohydr Poly2002,49,:1
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