DSpace Coleção:https://repositorio.ufopa.edu.br/jspui/handle/123456789/272024-03-28T11:33:48Z2024-03-28T11:33:48ZManta térmica para telhados a base de bucha vegetal (luffa cylindrica): uma proposta eco sustentávelhttps://repositorio.ufopa.edu.br/jspui/handle/123456789/11532024-03-21T23:12:51Z2022-12-13T00:00:00ZTítulo: Manta térmica para telhados a base de bucha vegetal (luffa cylindrica): uma proposta eco sustentável
Abstract: In recent decades, the world consumption of products has increased significantly, as a result,
industrialization is driven to meet this demand, generating environmental impacts. It is
necessary to seek sustainable alternatives to replace marketed products whose origin comes
from non-renewable sources. The thermal blanket is used in roof structures, whose use
necessarily promotes greater thermal comfort, and currently does not have an alternative of
natural origin. The objective of this research is to test the vegetal loofah (Luffa Cilíndrica), an
ecologically sustainable product that presents ecological sustainability, as it is a known natural
fiber and that has relevant production in the Amazon region, as a thermal blanket to promote
thermal comfort in buildings. Six boxes of identical size and materials were prepared (test cells)
where there would be differentiation only in the blanket used under the roof, one without a
blanket (matrix cell), one with a fiberglass blanket, one with a reflective aluminum blanket and
three cells with progressive loofah load (300g/m2, 600g/m2 and 900g/m2), these in order to
analyze the performance by material density. The cells were positioned outdoors, at the Centro
Universitário Luterano de Santarém (CEULS∕ULBRA), their internal temperature was collected
every three hours from thermocouples and a CR10 datalogger, for the measurement of the local
temperature, INMET data were collected, ANOVA statistical analysis was adopted with
application of Turkey's test. It was verified that the cells with a load of vegetable loofah had a
similar performance to the matrix cell and the cell with an aluminum blanket load, proving to
be sufficient to be used as a thermal blanket in buildings. Therefore, it was concluded that the
use of the Luffa C. blanket can be an adequate substitute for the currently commercialized
blankets.2022-12-13T00:00:00ZCristalinidade e estrutura química de espécies madeireiras amazônicas em pátio de toras após degradação naturalhttps://repositorio.ufopa.edu.br/jspui/handle/123456789/11502023-10-27T19:17:24Z2023-03-30T00:00:00ZTítulo: Cristalinidade e estrutura química de espécies madeireiras amazônicas em pátio de toras após degradação natural
Abstract: Losses in timber industries are considerable due to lack of post-harvest care, transport,
and storage. When post-slaughter care is not properly taken care of, part of the logs
arriving at the industrial yard has already been significantly degraded by the action of
xylophagous organisms. In the Amazon region, these effects are greater due to
incorrect transport and storage logistics that subject the wood to biotic and abiotic
agents. In this way, quality control methodologies or techniques that generate
subsidies for decision-making are important to guarantee greater yield and safety in
the various applicability that wood can have within the industry. In this scenario, the
use of non-conventional wood evaluation techniques can be an important tool due to
the reduced cost and time used in the analyzes with a view to directing the best way
to use this material. The objective of this work is to evaluate if the crystallinity and the
chemical structure of the wood obtained by X-ray diffraction and Fourier transform near
infrared spectrometry - (FTNIR) can help in the analysis of degradation by fungi and
insects in stored logs of Amazonian species in a storage yard. The material used came
from the log storage yard of a forestry company, in the rural area of Santarém. For this
study, was used material from 05 (five) commercial species that had been stored in an
open yard for six months. The scale of degradation by fungi and insects, the moisture
content of the logs and the chemical properties (content of total extractives, lignin and
holocellulose), the crystallinity and the chemical structure of the wood obtained by Xray diffraction and infrared spectrometry were evaluated. The position of the logs and
in the stacks associated with the storage time exerted some influence on the
quantitative and qualitative chemical characteristics of the wood. And with that, it was
also observed that the techniques of X-Ray diffraction and Fourier transform near
infrared spectrometry - (FTNIR) showed potential for analysis of degradation by fungi
and insects in logs of Amazonian species stored in a yard of storage.2023-03-30T00:00:00ZCaracterização morfológica dos Anfisbênios com poros pré-cloacais Leposternon polystegum (Duméril in Duméril & Duméril, 1851) e Leposternon mineiro Ribeiro, Silveira & Santos-Jr, 2018 (Squamata, Amphisbaenia) e comparação com espécies relacionadashttps://repositorio.ufopa.edu.br/jspui/handle/123456789/11492023-10-27T19:19:10Z2022-08-31T00:00:00ZTítulo: Caracterização morfológica dos Anfisbênios com poros pré-cloacais Leposternon polystegum (Duméril in Duméril & Duméril, 1851) e Leposternon mineiro Ribeiro, Silveira & Santos-Jr, 2018 (Squamata, Amphisbaenia) e comparação com espécies relacionadas
Abstract: Leposternon polystegum forms one of the eleven species of the genus Leposternon, which has
been shown to possess high morphological variability in some valid species, as well as contain
possible new taxa. The diagnoses and characterizations of most species were based on external
morphology, but not all species have well-defined diagnostic characters or an analysis of
morphological variation. Consequently, in the current study, specimens of L. polystegum from
scientific collections were analyzed to provide such morphological data, and so aid in the
diagnosis of the species and further the understanding of its geographic distribution.
Additionally, measurements from L. polystegum were compared with phylogenetically related
congeners with pre-cloacal pores. Eleven meristic and 39 morphometric characters were
analyzed, using descriptive and multivariate statistical analyses. The results of the current study
were structured into two chapters. In the first, L. polystegum is characterized morphologically
with new meristic and morphometric data, a diagnosis provided and the intraspecific variation
tested and identified as a possible clinal variation. Additionally, the geographic distribution of
L. polystegum was analysed and structured in a gazetteer and an updated map. In the second
article, L. mineiro, a species with pre-cloacal pores, was re-characterized with new
morphological data and its geographic distribution was expanded.2022-08-31T00:00:00ZDesenvolvimento de diagnósticos moleculares para os agentes etiológicos das podridões de raízes de mandioca na Região do Oeste do Paráhttps://repositorio.ufopa.edu.br/jspui/handle/123456789/11462023-10-27T19:20:12Z2022-10-25T00:00:00ZTítulo: Desenvolvimento de diagnósticos moleculares para os agentes etiológicos das podridões de raízes de mandioca na Região do Oeste do Pará
Abstract: Root rots are diseases caused by a complex of fungi and oomycetes, which in cassava
have a continuous and significant impact on production and consequently cause
socioeconomic damage to producing countries. For disease control, the correct diagnosis
of the pathogen is essential. Thus, the objective of this work was to develop a molecular
tool to differentiate the causal agents of cassava root rots through the ITS-RFLP of the
main causal agents known in Brazil (, Neoscytalidium dimidiatum, Phytophthora melonis,
Phytopythium sp., complexes Fusarium solani and Lasiodiplodia theobromae) digested
by selected enzymes in silico (EcoRI, BmgBI, HaeIII, SmaI and XhoI). It was possible to
verify the differentiation of the phytopathogens in two groups (ascomycetes and
oomycetes), only by the polymorphism of the fragment size of the ITS region.
Furthermore, it was possible to differentiate dry rot from black rot (Neoscytalidium
dimidiatum, complexes Fusarium solani, e Lasiodiplodia theobromae) using the enzymes
HaeIII, SmaI and EcoRI, as well as, within the oomycetes, to differentiate the species (P.
melonis, Phytopythium sp.) through the enzymes BmgBI and XhoI. Therefore, the ITSRFLP can be a new molecular tool for the rapid and efficient diagnosis of the causal
agents of cassava root rot in the main producing regions.2022-10-25T00:00:00Z