发布求助
文献互助 智能选刊 最新文献

Floresta e Ambiente最新文献

筛选
英文 中文
Technological Properties of Medium Density Particleboards Produced with Peanut (Arachis Hypogaea) and Pinus Oocarpa Hulls 花生壳、松壳生产中密度刨花板的工艺性能
IF 0.8
Floresta e Ambiente Pub Date : 2022-01-01 DOI: 10.1590/2179-8087-floram-2021-0101
Flávia Maria Silva Brito, B. A. Silva, Iara Marques de Carvalho, Sofia Baldoni Baúti, L. Mendes, J. B. Guimarães Júnior
{"title":"Technological Properties of Medium Density Particleboards Produced with Peanut (Arachis Hypogaea) and Pinus Oocarpa Hulls","authors":"Flávia Maria Silva Brito, B. A. Silva, Iara Marques de Carvalho, Sofia Baldoni Baúti, L. Mendes, J. B. Guimarães Júnior","doi":"10.1590/2179-8087-floram-2021-0101","DOIUrl":"https://doi.org/10.1590/2179-8087-floram-2021-0101","url":null,"abstract":"Peanut crop waste (hulls), which have a chemical composition similar to wood, can be considered as a source of industrial raw material for the production of particleboard, provided that they are of similar quality to wooden panels. The present study aimed to produce and evaluate the physical and mechanical properties of medium density particleboards made of peanut hulls and pine wood particles bonded with urea-formaldehyde adhesive. The panels did not present satisfactory dimensional stability. The mechanical properties were significantly reduced with the addition of peanut hulls. In general, peanut hulls did not represent a good alternative to be used as a source of raw material for the production of particleboard. The inclusion of new parameters in the production process would be essential to improve the technological properties, such as: new particle geometries, use of paraffin, particle treatments and inclusion of denser species in the composition of the panels.","PeriodicalId":46895,"journal":{"name":"Floresta e Ambiente","volume":"52 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79544481","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}
引用次数: 1
Influence of the Biological and Chemical Structure of Spruce Wood on Xylophage Infestation 云杉木材生化结构对木噬菌侵染的影响
IF 0.8
Floresta e Ambiente Pub Date : 2022-01-01 DOI: 10.1590/2179-8087-floram-2022-0012
K. Vedernikov, E. Zagrebin, I. Bukharina, P. Kuzmin
{"title":"Influence of the Biological and Chemical Structure of Spruce Wood on Xylophage Infestation","authors":"K. Vedernikov, E. Zagrebin, I. Bukharina, P. Kuzmin","doi":"10.1590/2179-8087-floram-2022-0012","DOIUrl":"https://doi.org/10.1590/2179-8087-floram-2022-0012","url":null,"abstract":"The process of forest death covers the entire boreal zone of the Northern Hemisphere. Due to the deterioration of the sanitary condition of forest areas, harmful organisms are becoming more active, where the most dangerous pest is Ips typographus. The aim of the work was to study the chemical structure of spruce wood in samples of various living conditions in the zones of active reproduction of bark beetles.The research studies the biochemical composition of Píceao bovata wood within the places of Ips typographus development (bythe example of the Udmurt Republic). The research was carried out within the European part of the Russian Federation, the Udmurt Republic region. The republic area is 42 thousand km2. A total of 15 sample plots were laid out and more than 8,000 trees were analyzed. It was revealed that in the subtaiga zone, the processes of death of spruce stands are observed.","PeriodicalId":46895,"journal":{"name":"Floresta e Ambiente","volume":"30 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76509977","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}
引用次数: 2
Fire Influence on the Ants Community in Savanic and Forest Environments of the Cerrado Biome 火灾对塞拉多草原和森林环境下蚂蚁群落的影响
IF 0.8
Floresta e Ambiente Pub Date : 2022-01-01 DOI: 10.1590/2179-8087-floram-2022-0025
Aline das Graças Costa, F. T. P. Torres, G. S. Lima, F. R. Melo, V. B. Rodrigues, Vicente Paulo Santana Neto, T. V. Fernandes
{"title":"Fire Influence on the Ants Community in Savanic and Forest Environments of the Cerrado Biome","authors":"Aline das Graças Costa, F. T. P. Torres, G. S. Lima, F. R. Melo, V. B. Rodrigues, Vicente Paulo Santana Neto, T. V. Fernandes","doi":"10.1590/2179-8087-floram-2022-0025","DOIUrl":"https://doi.org/10.1590/2179-8087-floram-2022-0025","url":null,"abstract":"The objective of this work is to evaluate the effect of fire on ant assemblages in savanna and forest typologies in the Reserva Natural da Serra do Tombador in Cavalcante – Goiás, Brazil. Ant pitfalls traps were installed and subdivided into Burnt Cerrado (BC), Unburnt Cerrado (UC), Burnt Forest (BF) and Unburnt Forest (UF), and the samples were sorted, assembled and identified. The constancy and abundance of individuals, and the frequency of distribution of the genera in the total area and by treatment were evaluated. The UF, BF, UC and BC had 19, 14, 8 and 15 genera, with Jackknife 1 index indicating 18.5, 24.4, 8.9 and 20.4 respectively. The Shannon diversity index for the genera was 0.8462, 0.7604, 0.6448 and 0.5992 for UF, BF, BC and UC respectively. The Cerrado showed greater abundance of individuals and greater ant diversity index in relation to Forest when in presence of fire.","PeriodicalId":46895,"journal":{"name":"Floresta e Ambiente","volume":"281 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83961718","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}
引用次数: 0
Estimation height level of Copaifera sp. (Leguminosae) by Artificial Neural Networks 豆科植物Copaifera sp.高度水平的人工神经网络估计
IF 0.8
Floresta e Ambiente Pub Date : 2022-01-01 DOI: 10.1590/2179-8087-floram-2021-00049
Bianca Cerqueira Martins, G. D. S. A. Leal, D. H. B. Binoti, G. C. Santos, Carlos Eduardo Silveira da Silva, J. V. Latorraca
{"title":"Estimation height level of Copaifera sp. (Leguminosae) by Artificial Neural Networks","authors":"Bianca Cerqueira Martins, G. D. S. A. Leal, D. H. B. Binoti, G. C. Santos, Carlos Eduardo Silveira da Silva, J. V. Latorraca","doi":"10.1590/2179-8087-floram-2021-00049","DOIUrl":"https://doi.org/10.1590/2179-8087-floram-2021-00049","url":null,"abstract":"The knowledge of tree attributes of the genus Copaifera sp. (copaiba), such as the height of the trunks, helps to estimate the productive potential of oleoresin and to propose more suitable ways of handling, aiming at optimizing production. This research aimed to test hypsometric equations and deterministic methods of Artificial Neural Networks (ANN) to estimate the total heights levels of the trunks of 31 copaiba trees of the Western Brazilian Amazon, at unknown ages. However, the ANN correlation coefficients obtained were greater than 0,99, demonstrating that they are appropriate for the estimation of height level ( h100% ). Among the ANN architectures, ANN 3 with 2 neurons in the hidden layer stood out. The application of ANN to estimate the total height of the trunk of Copaifera sp. native trees is a viable tool that can contribute to optimize modeling of the different important aspects to determine the productive potential of oleoresin.","PeriodicalId":46895,"journal":{"name":"Floresta e Ambiente","volume":"27 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82650051","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}
引用次数: 0
Angiosperm Diversity in the Semiarid Region of Ceará State, Brazil, with Emphasis on Caatinga Species 巴西塞埃尔<e:1>州半干旱区被子植物多样性——以卡廷加属为重点
IF 0.8
Floresta e Ambiente Pub Date : 2022-01-01 DOI: 10.1590/2179-8087-floram-2022-0018
Raimundo Luciano Soares Neto, M. I. Loiola
{"title":"Angiosperm Diversity in the Semiarid Region of Ceará State, Brazil, with Emphasis on Caatinga Species","authors":"Raimundo Luciano Soares Neto, M. I. Loiola","doi":"10.1590/2179-8087-floram-2022-0018","DOIUrl":"https://doi.org/10.1590/2179-8087-floram-2022-0018","url":null,"abstract":"We examined the taxonomic diversity of native angiosperms in the semiarid region of Ceará State, Brazil, emphasizing species occurring in Steppic Savanna. The diversity of native angiosperms comprises 120 families, 604 genera, and 1,443 species. Fabaceae was the most taxonomically diverse family, while Croton (Euphorbiaceae) was the most species rich genus (33 sp.). Steppic Savanna species account for 58% of all angiosperms recorded in Ceará State, and 41% of all species listed for that phytophysiognomy in Brazil. An update of the species richness within the Steppic Savanna of Ceará State phytogeographical area is provided, also indicating distribution data for other phytophysiognomies in Ceará.","PeriodicalId":46895,"journal":{"name":"Floresta e Ambiente","volume":"21 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81314829","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}
引用次数: 0
Forest Seedlings Supply for Restoration of the Atlantic Forest in Rio de Janeiro, Brazil 巴西里约热内卢大西洋森林恢复的森林幼苗供应
IF 0.8
Floresta e Ambiente Pub Date : 2022-01-01 DOI: 10.1590/2179-8087-floram-2021-0058
J. Freire, Iara Sabato Romano, Maria Vitória dos Santos Careli de Souza, Ana Cristina Siewert Garofolo, Telmo Borges Silveira Filho
{"title":"Forest Seedlings Supply for Restoration of the Atlantic Forest in Rio de Janeiro, Brazil","authors":"J. Freire, Iara Sabato Romano, Maria Vitória dos Santos Careli de Souza, Ana Cristina Siewert Garofolo, Telmo Borges Silveira Filho","doi":"10.1590/2179-8087-floram-2021-0058","DOIUrl":"https://doi.org/10.1590/2179-8087-floram-2021-0058","url":null,"abstract":"","PeriodicalId":46895,"journal":{"name":"Floresta e Ambiente","volume":"69 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87935674","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}
引用次数: 0
Diversity and Composition of a Seed Bank in the Subtropical Atlantic Forest, Southern Brazil 巴西南部亚热带大西洋森林种子库的多样性和组成
IF 0.8
Floresta e Ambiente Pub Date : 2022-01-01 DOI: 10.1590/2179-8087-floram-2021-0092
Alisson Schneiders, G. S. Grittz, A. L. Gasper
{"title":"Diversity and Composition of a Seed Bank in the Subtropical Atlantic Forest, Southern Brazil","authors":"Alisson Schneiders, G. S. Grittz, A. L. Gasper","doi":"10.1590/2179-8087-floram-2021-0092","DOIUrl":"https://doi.org/10.1590/2179-8087-floram-2021-0092","url":null,"abstract":"","PeriodicalId":46895,"journal":{"name":"Floresta e Ambiente","volume":"28 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76387851","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}
引用次数: 0
Numerical and Experimental Analysis of Wood Tensile Strength Perpendicular to the Grain 木材纵向抗拉强度的数值与实验分析
IF 0.8
Floresta e Ambiente Pub Date : 2022-01-01 DOI: 10.1590/2179-8087-floram-2021-0080
J. F. Silva, Patrik Luiz Silva de Araujo, K. A. D. Oliveira, Maria Fernanda Felippe Silva, C. Oliveira, J. C. Molina
{"title":"Numerical and Experimental Analysis of Wood Tensile Strength Perpendicular to the Grain","authors":"J. F. Silva, Patrik Luiz Silva de Araujo, K. A. D. Oliveira, Maria Fernanda Felippe Silva, C. Oliveira, J. C. Molina","doi":"10.1590/2179-8087-floram-2021-0080","DOIUrl":"https://doi.org/10.1590/2179-8087-floram-2021-0080","url":null,"abstract":"The Brazilian Code ABNT NBR 7190 (1997) is currently under review process and one of the proposals is the change and add of some test procedures. Several specimen geometric configurations and test conditions have been evaluated by the study committee CE-02:126.10. The aim of this paper was the analysis of the tensile strength perpendicular to the grain through the current Brazilian Code and from an adaptation of ISO 13910 (2005). Pine and Indian Cedar were used and simplified relationships were proposed. Numerical simulations were performed to identify the stress distributions in the specimens. The results obtained by ISO 13910 (2005) did not differ statistically for the two species. Brazilian standard method cedar had a higher strength value than pine. The simplified ratios obtained ranged between 0,017 and 0,123. The numerical simulations of ISO 13910 (2005) specimens showed predominant failure by tension in the lower fiber due to stress concentration.","PeriodicalId":46895,"journal":{"name":"Floresta e Ambiente","volume":"33 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75003243","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}
引用次数: 2
Production time and container size for Simarouba amara Aubl. seedlings Simarouba amara Aubl的生产时间和集装箱尺寸。幼苗
IF 0.8
Floresta e Ambiente Pub Date : 2022-01-01 DOI: 10.1590/2179-8087-floram-2022-0030
Jiovana Pereira Amorim Santos, M. O. Souza, Josival Santos Souza, R. D. Silva, A. Mendonça
{"title":"Production time and container size for Simarouba amara Aubl. seedlings","authors":"Jiovana Pereira Amorim Santos, M. O. Souza, Josival Santos Souza, R. D. Silva, A. Mendonça","doi":"10.1590/2179-8087-floram-2022-0030","DOIUrl":"https://doi.org/10.1590/2179-8087-floram-2022-0030","url":null,"abstract":"","PeriodicalId":46895,"journal":{"name":"Floresta e Ambiente","volume":"24 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87207394","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}
引用次数: 0
First Record of Brazil nut Pollinators Outside Amazon Biome 亚马逊生物群系之外巴西坚果传粉者的首次记录
IF 0.8
Floresta e Ambiente Pub Date : 2022-01-01 DOI: 10.1590/2179-8087-floram-2022-0009
Clarissa de Moraes Sousa, R. Almeida, G. Vittori, Anatoly Queiroz Abreu Torres, A. Moura, F. F. D. Oliveira, Matheus Santos Luz, S. M. Carvalho, L. L. S. Peres, M. Fontes, S. Botelho, L. A. Melo
{"title":"First Record of Brazil nut Pollinators Outside Amazon Biome","authors":"Clarissa de Moraes Sousa, R. Almeida, G. Vittori, Anatoly Queiroz Abreu Torres, A. Moura, F. F. D. Oliveira, Matheus Santos Luz, S. M. Carvalho, L. L. S. Peres, M. Fontes, S. Botelho, L. A. Melo","doi":"10.1590/2179-8087-floram-2022-0009","DOIUrl":"https://doi.org/10.1590/2179-8087-floram-2022-0009","url":null,"abstract":"We present the first records of insect visitors and pollinators of Bertholletia excelsa (Lecythidaceae) in a 25 years plantation outside the Amazon biome, flowering and producing Brazil nuts. We installed a platform to observe and photograph the insects. The collected insects were stored, mounted, and identified by specialists. Six species were observed, three of them classified as potential pollinators ( Centris lutea , Eulaema nigrita , Eulaema cingulata ). The species E. nigrita and E. cingulata were already reported as a pollinators of Brazil nut in Amazon. This is the first record of C. lutea as potential pollinators for B. excelsa .","PeriodicalId":46895,"journal":{"name":"Floresta e Ambiente","volume":"23 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85247821","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}
引用次数: 0
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信