scholarly journals Assessment of Physical-Chemical Characteristics of Surface Water from Key Sites of the Mesta River: State and Environmental Implications

2018 ◽  
Vol 374 ◽  
pp. 012093 ◽  
Author(s):  
S Georgieva ◽  
K Gartsiyanova ◽  
V Ivanova ◽  
L Vladimirova
Keyword(s):  
Surface Water ◽  
Chemical Characteristics ◽  
Environmental Implications ◽  
Physical Chemical ◽  
Key Sites

scholarly journals Assessment of Physical-Chemical Characteristics of Water and Sediments from a Brazilian Tropical Estuary: Status and Environmental Implications

2012 ◽  
Vol 2012 ◽  
pp. 1-14 ◽  
Author(s):  
Madson de G. Pereira ◽  
Marta V. A. S. de Andrade ◽  
Vanessa C. Ornelas ◽  
Raimunda A. N. de Almeida ◽  
Maurício P. F. Fontes ◽  
...  
Keyword(s):  
Northeastern Brazil ◽  
Chemical Characteristics ◽  
Tropical Estuary ◽  
Total Organic Matter ◽  
Environmental Standards ◽  
Environmental Implications ◽  
Environmental Preservation ◽  
X Ray ◽  
Physical Chemical

The environmental quality of the Jacuípe River's estuary (very important in northeastern Brazil) was assessed during 2007 and 2008. In water, concentrations (mg L−1) ofNO2-(<0.004 to 0.016),NO3-(0.01 to 0.33), solublePO43-(<0.02 to 0.22), dissolved oxygen (3.9 to 9.6), total contents (mg L−1) of Cd (<0.001), Cu (<0.01), Pb (<0.01), and Zn (<0.1), pH (5.60 to 8.00), and electrical conductivity (0.12 to 48.60 mS cm−1) agreed with environmental standards. In sediments, clay and total organic matter (%, m/m) varied, respectively, from 8.8 to 12.0 and from 1.1 to 8.8, while infrared, thermogravimetric profile, electronic micrograph, as well as X-Ray analyses showed desirable adsorptive characteristics. However, maximum exchangeable levels (mg kg−1) of Cd (1.3), Cu (44.6), Pb (35.7), and Zn (43.7) and their respective maximum pseudototal concentrations (mg kg−1): 19.4, 95.1, 68.2, and 30.3 were below the recommended limits. In this sense, it was possible to demonstrate good environmental preservation even with the growing number of industries and touristic activities in the evaluated estuarine area.

Recent trends in nanozymes design: from materials and structures to environmental applications

2021 ◽  
Author(s):  
Camilo A S Ballesteros ◽  
Luiza Mercante ◽  
Augusto Alvarenga ◽  
Murilo Henrique Moreira Facure ◽  
Rodrigo Schneider ◽  
...  
Keyword(s):  
Environmental Applications ◽  
Chemical Characteristics ◽  
Physical Chemical ◽  
Recent Advances ◽  
Technological Advances ◽  
Recent Trends

A large variety of engineered nanostructures possessing enzyme-like activities have been proposed recently, which unique physical-chemical characteristics enable remarkable technological advances. In this review, we survey recent advances on nanozymes...

THE EFFECT OF REFRIGERATED STORAGE ON SENSORY PROFILE AND PHYSICAL-CHEMICAL CHARACTERISTICS OF MINIMALLY PASTEURIZED ORANGE JUICE

2009 ◽  
Vol 33 ◽  
pp. 264-280 ◽  
Author(s):  
TATIANA BEATRIS TRIBESS ◽  
MARIA AUXILIADORA DE BRITO RODAS ◽  
JUSSARA CARVALHO DE MOURA DELLA TORRE ◽  
CARMEN CECILIA TADINI
Keyword(s):  
Orange Juice ◽  
Sensory Profile ◽  
Chemical Characteristics ◽  
Refrigerated Storage ◽  
Physical Chemical

A Study of the Chemical and Physical Characteristics of the Soils from the South of Piauí for Soil-Cement Brick Production

2016 ◽  
Vol 869 ◽  
pp. 112-115 ◽  
Author(s):  
Francisca Pereira de Araújo ◽  
Edson Cavalcanti Silva Filho ◽  
João Sammy Nery de Souza ◽  
Josy Anteveli Osajima ◽  
Marcelo Barbosa Furtini
Keyword(s):  
Organic Matter ◽  
Particle Density ◽  
Environmentally Friendly ◽  
Physical Characteristics ◽  
Chemical Characteristics ◽  
The South ◽  
Physical Chemical ◽  
Soil Cement ◽  
Made In

Soil-cement bricks are good examples of environmentally friendly products. This brick is the combination of soil with compacted cement with no combustion in its production. In this work the physical chemical characteristics of the soil from Piaui for producing this material were investigated. Samples of the soil were collected in three potteries from the county of Bom Jesus and pH analysis were carried out, as well as the rate of organic matter, texture, particle density, limits of liquidity and plasticity rates. The results have shown that the soils have acid tones (pH 5,49 a 6,11), which can be neutralized by adding cement, and organic matter percentages up to 1%. The samples have shown predominantly clay-rich textures with adequate plasticity limits, however, values of liquidity limits and particle density above recommended. Altogether, these soils tend to present viability concerning soil-cement brick production, provided that corrections with additives are made in order to minimize this effect.

scholarly journals Ethephon use and application timing of abscisic acid for improving color of 'Rubi' table grape

2013 ◽  
Vol 48 (7) ◽  
pp. 797-800 ◽  
Author(s):  
Sergio Ruffo Roberto ◽  
Adriane Marinho de Assis ◽  
Lilian Yukari Yamamoto ◽  
Lidiane Carla Vilanova Miotto ◽  
Renata Koyama ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Table Grape ◽  
Chemical Characteristics ◽  
Application Timing ◽  
Physical Chemical

The objective of this work was to evaluate the effect of ethephon and of abscisic acid (ABA) application timing on the color of 'Rubi' Table grape. Eight treatments were evaluated: control, without application; ethephon 500 mg L‑1 applied seven days after veraison (7 DAV); and two concentrations of ABA (200 and 400 mg L‑1) arranged with three application timings at 7 DAV, at 15 days before harvest (DBH), and at 7 DAV + 15 DBH. ABA does not modify physical‑chemical characteristics of the cluster and improves the color of grapes, especially when applied twice (7 DAV + 15 DBH) at the concentration of 400 mg L‑1.

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