scholarly journals ANALISE COMPARATIVA DOS FRAGMENTOS DE CERRADO NOS MUNICÍPIOS DE CAMPO MOURÃO E JAGUARIAÍVA, PARANÁ, BRASIL

2021 ◽  
Vol 12 (3) ◽  
pp. 01-13
Author(s):  
Fernando Henrique Villwock ◽  
Ana Paula Colavite

The Cerrado (Savannah) is one of the six Brazilian morphoclimatic domains and although it has its core area located in Brazil’s central region, fragments of this vegetation are observed in the state of Paraná and that, even, they have already occupied 1,700 square kilometers. Currently, however, the Cerrado is restricted only to isolated islands in cities such as Arapoti, Campo Mourão, Cianorte, Jaguariaíva, Sabáudia, Sengés and Tuneiras do Oeste. In the light of these considerations, this article aims at presenting the comparative characterization of the Cerrado areas in Campo Mourão and Jaguariaíva by highlighting the geographical elements observed there. For the accomplishment of the research, fieldwork was done, as well as comparative analyzes throughcartographic and bibliographical material. From the research survey, it was evidenced that: a) both analyzed fragments are in different climates; b) the soil in the area studied in Jaguariaíva presents sandy texture in shallow soil, while in Campo Mourão the soil can be described as Lactosoil with clayey texture; c) both soils, although distinct, have low natural fertility and high acidity; d) the botanical families that compose the studied’s area vegetation are correlated.

2020 ◽  
Vol 25 (4) ◽  
Author(s):  
Kelson Silva de Almeida ◽  
Roberto Arruda Lima Soares ◽  
José Milton Elias de Matos

ABSTRACT The clay ceramics industry comprises materials used in construction (bricks, tiles, and expanded clay, among others), is of great importance for Brazilian economic development, and the industry is seeking new sources of raw material, mainly clay. The present work aims to characterize a clay deposit located in the central region of the state of Piauí, to make feasible its use as ceramic raw material, seeking to boost the clay ceramics industry. The chemical composition, the crystalline phases, and the plasticity of the clay were analyzed. Specimens were prepared by uniaxial pressing, dried in an oven at 110 °C, and then heated to 900 °C, 1000 °C, and 1100 °C. Bending strength, apparent porosity, linear shrinkage, water absorption, and mineralogical, macrostructural, and microstructural analyses were determined. The results showed an improvement in the indices with the increase in the firing temperature and that the samples showed a reddish coloration due to the presence of iron, as well as quartz and kaolinite. Thus, the clay deposit has the potential to become raw material for the clay ceramics industry in the state of Piauí.


2016 ◽  
Vol 2 (2) ◽  
pp. 3
Author(s):  
Muhammad Irfan-maqsood ◽  
Hojjat Naderi-Meshkin ◽  
Asieh Heirani-Tabasi ◽  
Monireh Bahrami ◽  
Mahdi Mirahmadi ◽  
...  

Author(s):  
S.E. Mikhalin S.E. ◽  

The article sets out information on the conduct of soil control of the potato elite, provides information on the state of elite seed production of potatoes in the Central region of Russia according to the data of soil control - which regions participated in its implementation, how many samples and varieties of potatoes were provided for soil control in different years, what were the main varieties, which potato diseases were taken into account.


Cellulose ◽  
2021 ◽  
Author(s):  
Mengchen Zhao ◽  
Yuko Ono ◽  
Yuichi Noguchi ◽  
Shuji Fujisawa ◽  
Tsuguyuki Saito

2015 ◽  
Vol 583 ◽  
pp. A84 ◽  
Author(s):  
A. E. Suárez ◽  
J. A. Combi ◽  
J. F. Albacete-Colombo ◽  
S. Paron ◽  
F. García ◽  
...  

2005 ◽  
Vol 61 (5) ◽  
pp. 725-734 ◽  
Author(s):  
F.H. Clarke ◽  
R.J. Stern
Keyword(s):  

2010 ◽  
Vol 16 (40) ◽  
pp. 12199-12206 ◽  
Author(s):  
Thomas K. Wood ◽  
Warren E. Piers ◽  
Brian A. Keay ◽  
Masood Parvez

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