The Potential Use of Residual Soil from Ribeira Valley (Brazil) in Mitigating Metal Contamination: A Geotechnical Characterization

2018 ◽  
pp. 27-31 ◽  
Author(s):  
Jéssica Pelinsom Marques ◽  
Valéria Guimarães Silvestre Rodrigues ◽  
Orencio Monje Vilar ◽  
Edmundo Rogério Esquivel
Keyword(s):  
Metal Contamination ◽  
Residual Soil ◽  
Geotechnical Characterization ◽  
Potential Use

scholarly journals Geotechnical Characterization and Suitability of Dredged Material from Jhelum Flood spill channel for its potential use as Construction Material.

2017 ◽  
Vol 7 (1) ◽  
pp. 11-21
Author(s):  
Zaid Yaqoob Mir Rangrez ◽  
Zohaib Ahmad Khan ◽  
Ghazi Mohd. Mustaqeem ◽  
Barkat Hussain Khan ◽  
Ajaz Masood Bhat
Keyword(s):  
Construction Material ◽  
Dredged Material ◽  
Geotechnical Characterization ◽  
Potential Use

scholarly journals Short Communication: Protein profiles of Giant Mudskipper and its potential use as biomarker candidate for heavy metal contamination in Barito Estuary, Indonesia

2019 ◽  
Vol 20 (3) ◽  
pp. 745-753
Author(s):  
HIDAYATURRAHMAH HIDAYATURRAHMAH ◽  
MABRUR MABRUR ◽  
HERI BUDI SANTOSO ◽  
RANI SASMITA ◽  
UMMY SHALIHA AULIA RAHMY ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Molecular Weight ◽  
Ammonium Sulfate ◽  
Metal Contamination ◽  
Protein Concentration ◽  
Biological Diversity ◽  
Short Communication ◽  
Heavy Metal Contamination ◽  
Protein Profiles ◽  
Potential Use

Abstract. Hidayaturrahmah, Mabrur, Santoso HB, Sasmita R, Rahmy USA, Badruzsaufari. 2019. Short Communication: Protein profiles of Giant Mudskipper and its potential use as biomarker candidate for heavy metal contamination in Barito Estuary, Indonesia. Biodiversitas 20: 745-753. Giant mudskipper (Periphthalmodon schlosseri, Pallas 1770) is one of important biological diversity that potential as bio-indicator in environment assessment which is heavy metal contamination. These fish are susceptible to ambient environment, that effect to their physiological mechanism including protein synthesis and expression. This research aims to identify protein profiles of giant mudskipper muscle and review its potential application as a biomarker for heavy metal contamination in Barito Estuary of South Kalimantan. Total proteins were isolated from fish muscle using Tris EDTA buffer and then precipitated using Ammonium sulfate salt. The protein concentration was measured using Bradford assay and then separated based on molecular weight using the SDS-PAGE method. The result showed muscle proteins of giant mudskipper could be precipitated on optimum condition at Ammonium sulfate saturation 60-70% which protein concentration 5.106 mg.mL-1. The protein separated into 20 bands for raw and precipitated proteins which molecular weight ranging from 33 into 184 kDa. Further study is needed for protein identification based on amino acids sequence of protein bands for biomarker discovery and validation.

scholarly journals Geotechnical variations on a tropical soil produced by municipal solid waste leachate

2017 ◽  
pp. 40-47
Author(s):  
Alejandro Quintero-Ramirez ◽  
Yamile Valencia-Gonzalez ◽  
Luis Augusto Lara-Valencia
Keyword(s):  
Municipal Solid Waste ◽  
Solid Waste ◽  
Soil Condition ◽  
Natural Soil ◽  
Residual Soil ◽  
Solid Waste Disposal ◽  
Geotechnical Characterization ◽  
Two Samples ◽  
Proper Disposal ◽  
Waste Leachate

Solid waste disposal has become a problem for municipal administrations due to the population growth and the limited availability of land for such uses, furthermore, the increase of rainfall for long periods produces a large amount of leachate that requires a proper disposal. This study was carried out to analyze the effect of municipal solid waste leachate in soils, in this way, different tests of physical, chemical, mechanical and mineralogical properties were performed on two samples of a residual soil from the Batolito Antioqueño, located in Rionegro city. For the first sample, geotechnical characterization tests were executed in the natural soil condition. On the other hand, the same tests were implemented in the second sample after go through a leachate process. Were found important variations in the properties of the soil affected by the process of contamination when compared with the properties of the natural soil condition.

Investigação da relação chuva-deslizamentos no município de Mauá – SP para obtenção de limiares críticos deflagradores de deslizamentos

2021 ◽  
Vol 43 ◽  
pp. e50
Author(s):  
Aloa Dandara Oliveira Damasceno ◽  
Andrea De Oliveira Cardoso ◽  
Cláudia Francisca Escobar de Paiva
Keyword(s):  
Residual Soil ◽  
City Region ◽  
Landslide Occurrence ◽  
Geotechnical Characterization ◽  
Geotechnical Characteristics ◽  
Geodynamic Processes ◽  
The Relationship ◽  
Precipitation Events ◽  
Daily Total

The Mauá city, Region of Grande ABC Paulista, is among the five municipalities of the São Paulo state with the most critical situation in relation to the number of records of geological accidents, which makes it vulnerable to intense and persistent rainfall. This study investigates the relationship between precipitation events and landslide occurrence in this municipality from the geological-geotechnical characterization of samples representative of the horizons most susceptible to the region's geodynamic processes, precipitation patterns and the frequency of landslides. It was found that rains of different intensities and durations can increase the number of landslides. In addition, the geological and geotechnical characteristics of the region's pedological horizons (residual soil from mica schist and granite) and anthropic interventions contribute to the magnitude of susceptibility to geodynamic and related processes. The curves of landslides obtained, for different criteria of daily and accumulated precipitation before the occurrence, showed that the greater the accumulated value of precipitation, the lower the intensity of daily precipitation necessary to trigger the landslides. The criteria indicated the daily total of 35 mm as the most restrictive, regardless of the value accumulated in days prior to the occurrences, which was validated with the cases of recent landslides occurred in the region, not considered in the calibration of the adjustment equation. In addition, in periods without rain in the previous days, the landslides will tend to occur with rainfall greater than 70 mm on the day of the event, an increase of this value may be observed with the increase in the number of previous dry days.

Geotechnical Characterization and Failure Mechanism of Landslide in Granite Residual Soil

2019 ◽  
Vol 145 (8) ◽  
pp. 05019004
Author(s):  
Roberto Quental Coutinho ◽  
Marilia Mary Silva ◽  
Amabelli Nunes dos Santos ◽  
Willy Alvarenga Lacerda
Keyword(s):  
Failure Mechanism ◽  
Residual Soil ◽  
Geotechnical Characterization ◽  
Granite Residual Soil ◽  
Mechanism Of Landslide

The growth of mica polytypes as studied by conventional and high-resolution TEM

1983 ◽  
Vol 41 ◽  
pp. 174-177
Author(s):  
A. Baronnet ◽  
M. Amouric
Keyword(s):  
Water Pressure ◽  
Point Of View ◽  
Temperature Fields ◽  
Natural Occurrence ◽  
Growth Mechanisms ◽  
Long Period ◽  
High Resolution Tem ◽  
Layer Stacking ◽  
Experimental Works ◽  
Potential Use

The origin of mica polytypes has long been a challenging problem for crystal- lographers, mineralogists and petrologists. From the petrological point of view, interest in this field arose from the potential use of layer stacking data to furnish further informations about equilibrium and/or kinetic conditions prevailing during the crystallization of the widespread mica-bearing rocks. From the compilation of previous experimental works dealing with the occurrence domains of the various mica "polymorphs" (1Mr, 1M, 2M1, 2M2 and 3T) within water-pressure vs temperature fields, it became clear that most of these modifications should be considered as metastable for a fixed mica species. Furthermore, the natural occurrence of long-period (or complex) polytypes could not be accounted for by phase considerations. This highlighted the need of a more detailed kinetic approach of the problem and, in particular, of the role growth mechanisms of basal faces could play in this crystallographic phenomenon.

An atomic-resolution microscope study of Al contracts on GaAs

1986 ◽  
Vol 44 ◽  
pp. 726-727
Author(s):  
Z. Liliental-Weber ◽  
C. Nelson ◽  
R. Ludeke ◽  
R. Gronsky ◽  
J. Washburn
Keyword(s):  
High Speed ◽  
Schottky Contacts ◽  
Detailed Knowledge ◽  
The Past ◽  
Semiconductor Interfaces ◽  
Deposited Metal ◽  
Microwave Applications ◽  
Free Interfaces ◽  
Potential Use

The properties of metal/semiconductor interfaces have received considerable attention over the past few years, and the Al/GaAs system is of special interest because of its potential use in high-speed logic integrated optics, and microwave applications. For such materials a detailed knowledge of the geometric and electronic structure of the interface is fundamental to an understanding of the electrical properties of the contact. It is well known that the properties of Schottky contacts are established within a few atomic layers of the deposited metal. Therefore surface contamination can play a significant role. A method for fabricating contamination-free interfaces is absolutely necessary for reproducible properties, and molecularbeam epitaxy (MBE) offers such advantages for in-situ metal deposition under UHV conditions

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