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| 1 | Height-to-diameter ratios with temporal and dendro/morphometric variables for Brazilian pine in south Brazil显示文摘Height-to-diameter ratios(HD)are an important measure of the stability,density and competition of forest stands.It refl ects the vertical growth of the trees,the vulnerability of the forest canopy structure and infl uences volumetric production.HD ratios vary according to tree size,availability of resources for growth,stand density and species composition.Data were taken from 210 trees and a regression technique of generalized linear models for the HD ratio applicable for forest structure conservation was developed.The objective of this study was to model the HD ratios of dominant and co-dominant trees of Araucaria angustifolia according to morphometric,dendrometric,annual diameter increment,stand density,and age variables in three sites in southern Brazil.The results show that the HD ratio decreases with increasing age,crown area and basal area,and increases with stand density and annual diameter increment.Accuracy of the developed equations was demonstrated by the values of deviation,Bayesian and Akaike criteria.The results are of interest to forest managers since they make decisions about silvicultural operations.Growth continuity and forest production indicate that any intervention should be directed at younger trees of smaller sizes,and that one of the main management factors for stand stability and growth is the formation of the stand and its capture of light. | Andre Felipe Hess Myrcia Minatti Emanuel Arnoni Costa Luis Paulo Baldissera Schorr Gabriel Teixeira da Rosa Isadora de Arruda Souza Geedre Adriano Borsoi Veraldo Liesenberg Thiago Floriani Stepka Roberta Abatti | 2021 | Journal of Forestry Research2021，32，1： | 2 |
| 2 | Inhibition of hydrogen sulphide formation reduces eisplatin-indueed renal damage显示文摘 | Delia Coletta Francescato H Cunha FQ Costa RS Barbosa Junior F Boim MA Arnoni CP | 2011 | Nephrol Dial Transplant2011，26，2： | 1 |
| 3 | Randomized trial onthe ef- fect of sevoflurance on polypropylene membrane oxygenator perfor- mance显示文摘 | Nigro Neto C Arnoni R Rida BS | 2013 | J Cardiothorac Vasc Anesth2013，27，5： | 1 |
| 4 | 采用Cr_3C_2-NiCr和WC-CoCr粉末的HVOF处理(英文)显示文摘磨损是工业上导致零件和装备失效的三个主要问题中的一个。人们在不断探索改善零件性能的潜力,提出新的技术,力图提高零件的使用寿命,降低运作成本。由此看来,电镀及涂覆技术是很重要的。人们已经采用传统的镀硬铬来改善耐磨性(或)耐蚀性,然而电镀过程中会产生有害的致癌物质六价铬,致使其应用受到了越来越大的限制。因此,必须鉴别和研发无毒的、非致癌的和对环境友好的涂覆材料和工艺。其中用本文所述的HVOF工艺涂覆的'陶瓷合金'(Cr3C2-NiCr-WC-CoCr)前景最被看好。用光学和电子显微分析法、X射线衍射法、密度和显微磨料磨损试验标征了用这种工艺获得的涂层的特性。从总体上看,WC-CoCr涂层的性能最好,由此可以认为,它是一种前景广阔、可以替代电镀硬铬的涂覆技术。 | Rafael Nucci A.Lombardi Neto E.A.B. Arnoni G.E.Totten L.C.Casleletti | 2007 | 热处理2007，22，4： | 1 |
| 5 | Rubella vaccination and transitory false-positive test results for human immunodeficiency virus Type 1in blood donors显示文摘 | Araujo PR Albertoni G Arnoni C | 2009 | Transfusion2009，49，11： | 1 |
| 6 | A new classification of post- sternotomy dehiscence显示文摘 | Anger J Dantas DC Arnoni RT | 2015 | Rev Bras Cir Cardiovasc2015，30，1： | 1 |
| 7 | Effects of glucose deprivation or glucose instability on mesangial cells in culture 显示文摘 | Limae D Arnoni S Schor CP | 2009 | Am J Nephro12009，29，3： | 1 |
| 8 | ( Pro) renin receptor ; another member of the system controlled by angiotensin II? 显示文摘 | Pereira LG Arnoni CP Maquigussa E | 2012 | J Renin Angiotensin Aldosterone Syst2012，13，1： | 1 |
| 9 | Effect of longterm type 1 diabetes on renal sodium and water transporters in rats 显示文摘 | Vidotti DB Arnoni CP Maquigussa E | 2008 | Am J Nephrol2008，28，1： | 1 |
| 10 | Randomized trial onthe effect of sevoflu- rane on polypropylene membrane oxygen- ator performance显示文摘 | Nigro Nero C Arnoni R Rida BS | 2013 | J Cardiothorac Vasc Anesth2013，27，5： | 1 |
| 11 | Eimeria stiedae:weight,oocyst output,and hepatic function of rabbits with graded infections显示文摘 | Barriga O O Arnoni J V | | 0，，： | 1 |
| 12 | Altered of apoptoticmarkers of both extrinsic and intrinsic pathways induced by hep-atitis C virus infection in peripheral blood mononuclear cells显示文摘 | Albertoni G Arnoni CP Latini FR | 2012 | Viroi J2012，9，： | 1 |
| 13 | Risk factors associated with cardiac surgery during pregnancy 显示文摘 | Arnoni RT Arnoni AS Bonini RC | 2003 | Ann Thorac Surg2003，76，5： | 1 |
| 14 | Risk factors associated with cardiac surgery during pregnancy显示文摘 | Arnoni R T Arnoni A S Bonini R C | 2003 | Ann Thorac Surg2003，76，5： | 1 |
| 15 | DARC (Duffy) and BCAM (Lutheran) reduced expression in thyroid cancer显示文摘 | Latini F.R.M Bastos A.U Arnoni C.P | | 0，，03： | 1 |
| 16 | Understanding bark thickness variations for Araucaria angustifolia in southern Brazil显示文摘This study aimed to understand bark thickness variations of Araucaria angustifolia(Bertol.)Kuntze trees growing in natural forest remnants in southern Brazil,and their relationship with quantitative and qualitative attributes.Bark thickness must be accurately estimated in order to determine timber volume stocks.This is an important variable for the sustainable management and conservation of araucaria forests.In spite of its importance and visibility,bark thickness variations have not been evaluated for this key species in southern Brazil.A total of 104 trees were selected,and their qualitative and quantitative attributes such as diameter at breast height(D_(BH)),height(H),crown base height(C_(BH)),crown length(C_(L)),social position(S_(P)),stoniness(S_(T)),position on the relief(P_(R)),vitality(V_T)and branch arrangement(B_(A))were measured.The trees were categorized into two groups:red bark or gray bark.Regression analysis and artificial neural networks(ANN)were used for modelling bark thickness.The results indicate that:(1)bark thickness showed good correlation to D_(BH),with 0.76 as coefficient of determination(RS_P),0.540 as Mean Absolute Error(M_(AE))and 22.4 root-meansquare error in percentage(R_(MSE%));(2)the trend changed according to bark colour,with significant differences for the intersection(_0–Pr>F:p=0.0124)and slope(β_(1)–Pr>F:p=0.0126)of bark thickness curves between groups;(3)the highest correlation of bark thickness was found with:D_(BH)(ρ=0.88),H(ρ=0.58),C_(BH)(ρ=0.46),S_(P)(ρ=-0.52),and B_(A)(ρ=-0.32);(4)modelling with ANN confirmed high adjustment(R^(2)=0.99)and accuracy(R_(MSE%)=3.0)of the estimates.ANN is an efficient and robust technique for the modelling of various qualitative and quantitative attributes commonly used in forest mensuration.The effective use of ANN to estimate araucaria bark in natural forests reinforces its potential,besides the possibility of application for other forest species. | Emanuel Arnoni Costa Veraldo Liesenberg César Augusto Guimaraes Finger AndréFelipe Hess Cristine Tagliapietra Schons | 2021 | Journal of Forestry Research2021，32，3： | 0 |
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