scholarly journals Morphology, Physical and Chemical Characteristics of Mangrove Soil under Riverine and Marine Influence: A Case Study on Subaé River Basin, Bahia, Brazil

2018 ◽  
Author(s):  
Marcela Rebouças Bomfim ◽  
Jorge Antônio Gonzaga Santos ◽  
Oldair Vinhas Costa ◽  
Joseane Nascimento da Conceiçao ◽  
Alyne Araújo da Silva ◽  
...  
Keyword(s):  
River Basin ◽  
Chemical Characteristics ◽  
Physical And Chemical Characteristics ◽  
Mangrove Soil ◽  
Marine Influence ◽  
Physical And Chemical

scholarly journals Physical and chemical characteristics of mangrove soil under marine influence. A case study on the Mangrove Forests at Egyptian-African Red Sea Coast.

2019 ◽  
Vol 23 (3) ◽  
pp. 385-399
Author(s):  
Abdelwahab A. Afefe ◽  
Mohamed S. Abbas ◽  
Amira Sh. Soliman ◽  
Abdel-Hamid A. Khedr ◽  
El-Bialy E. Hatab
Keyword(s):  
Red Sea ◽  
Chemical Characteristics ◽  
Mangrove Forests ◽  
Physical And Chemical Characteristics ◽  
Mangrove Soil ◽  
Marine Influence ◽  
Red Sea Coast ◽  
Physical And Chemical ◽  
Sea Coast

scholarly journals CONDIÇÕES DE ARMAZENAGEM E QUALIDADE DA MATÉRIA PRIMA: ESTUDO DE CASO EM UMA DERIVADORA DE ALIMENTOS A BASE DE MILHO

2017 ◽  
Vol 3 (3) ◽  
pp. 18-33
Author(s):  
Samara Pereira Dias ◽  
Jamir Rauta ◽  
César Augustus Winck
Keyword(s):  
Quality Control ◽  
Storage System ◽  
Raw Material ◽  
Chemical Characteristics ◽  
Direct Influence ◽  
Storage Process ◽  
Physical And Chemical Characteristics ◽  
Physical And Chemical

The storage process, in some way, has a direct influence on the production and status of the derived final product. It was possible to verify in this case study that the storage system of the company is deficient, needing improvements, especially when entering the raw material for production. Such problems, such as impurities, broken and burned grains, are generated in the warehouse itself, due to lack of prudence and coordination. Findings that contradict the objective of storage that is the conservation of the particularities of the grains and that may detract from the attributes of the end product in terms of taste, physical and chemical characteristics and visual conditions. Among the possible causes of the disturbances are the lack of maintenance of the machines, inefficient aeration and thermometry gauging. As a suggestion, besides the improvements on the mentioned problems, the implantation of management and strategy of inventories, of programs and quality control, development of the producing agents, planning and methods of solution of problems. The decline in the quality of the raw material, corn, can result in chain effect, damaging the final product, thus damaging the financial results of the organization.

scholarly journals Genesis, Characterization, and Classification of Mangrove Soils in the Subaé River Basin, Bahia, Brazil

2015 ◽  
Vol 39 (5) ◽  
pp. 1247-1260 ◽  
Author(s):  
Marcela Rebouças Bomfim ◽  
Jorge Antonio Gonzaga Santos ◽  
Oldair Vinhas Costa ◽  
Xosé Luis Otero ◽  
Geraldo da Silva Vilas Boas ◽  
...  
Keyword(s):  
River Basin ◽  
Environmental Protection Agency ◽  
Soil Classification ◽  
Mangrove Soil ◽  
Marine Influence ◽  
Mangrove Soils ◽  
Inorganic Waste ◽  
Ph Level ◽  
Physical And Chemical

ABSTRACT Preservation of mangroves, a very significant ecosystem from a social, economic, and environmental viewpoint, requires knowledge on soil composition, genesis, morphology, and classification. These aspects are of paramount importance to understand the dynamics of sustainability and preservation of this natural resource. In this study mangrove soils in the Subaé river basin were described and classified and inorganic waste concentrations evaluated. Seven pedons of mangrove soil were chosen, five under fluvial influence and two under marine influence and analyzed for morphology. Samples of horizons and layers were collected for physical and chemical analyses, including heavy metals (Pb, Cd, Mn, Zn, and Fe). The moist soils were suboxidic, with Eh values below 350 mV. The pH level of the pedons under fluvial influence ranged from moderately acid to alkaline, while the pH in pedons under marine influence was around 7.0 throughout the profile. The concentration of cations in the sorting complex for all pedons, independent of fluvial or marine influence, indicated the following order: Na+>Mg2+>Ca2+>K+. Mangrove soils from the Subaé river basin under fluvial and marine influence had different morphological, physical, and chemical characteristics. The highest Pb and Cd concentrations were found in the pedons under fluvial influence, perhaps due to their closeness to the mining company Plumbum, while the concentrations in pedon P7 were lowest, due to greater distance from the factory. For containing at least one metal above the reference levels established by the National Oceanic and Atmospheric Administration (United States Environmental Protection Agency), the pedons were classified as potentially toxic. The soils were classified as Gleissolos Tiomórficos Órticos (sálicos) sódico neofluvissólico in according to the Brazilian Soil Classification System, indicating potential toxicity and very poor drainage, except for pedon P7, which was classified in the same subgroup as the others, but different in that the metal concentrations met acceptable standards.

Unusually physical and chemical characteristics of oil sands from Qaidam basin, NW China

2005 ◽  
Vol 39 (2) ◽  
pp. 121-130 ◽  
Author(s):  
Zhi-Nong Gao ◽  
Li-Bo Zeng ◽  
Fei Niu
Keyword(s):  
Oil Sands ◽  
Qaidam Basin ◽  
Chemical Characteristics ◽  
Nw China ◽  
Physical And Chemical Characteristics ◽  
Physical And Chemical
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