scholarly journals Use of Soil Physicochemical Properities in Assessment of Soil Erosion South; A Case Study of Agbor, South-South Nigeria

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Ruth Oghenerukevwe Eyankware Ulakpa ◽  
Wisdom Chukwuemeke Ulakpa ◽  
Moses Oghenenyoreme Eyankware
Keyword(s):  
Ph Value ◽  
Chemical Properties ◽  
Test Site ◽  
Intense Rainfall ◽  
Sand Fraction ◽  
Physiochemical Properties ◽  
Physical And Chemical ◽  
Mesh Sieve ◽  
And Chemical Properties

The study area is one of the areas in the south-south region of Nigeria that has been ravaged by erosion. This has lead loss of infrastructure and has also affected the livelihood of the inhabitant of the study area.  In this study, the physiochemical properties of soils in Agbor and its neighboring communities was assessed in eleven different locations. A total of eleven soil samples, consisting of 5 samples each at a depth of 0 – 200 cm were taken in accordance with the clarification of different horizons. The samples were air-dried, crushed and sieved in 2mm mesh sieve then subjected to analysis for both physical and chemical properties in the laboratory. The physiochemical analysis results showed that pH value ranges from 5.0 to 6.3 indicating very strongly acidic to strongly acidic. Bulk density ranged from 1.29 to1.35 indicating a slight increase due to the presence of sand fraction. And low level of porosity which ranged from 49.4 to 50.9. The low obtained from Total Organic Matter (TOM) indicate intense rainfall and constant leaching. The low Ca, Mg, K+ and Na+  values indicate intense rainfall and leaching problems. The values obtained from Al3+, H+, EA and P revealed slight increase and cause of acidity nature across eleven soils test site. The properties showed by all soils revealed that they are vulnerable to weathering, leaching and easy removal by runoff. Therefore, there resistivity is low.

Physical and Chemical Properties of Mineral in Soils of Cassava Cropping Area: A Case Study in Chonburi Province

2014 ◽  
Vol 979 ◽  
pp. 440-443
Author(s):  
W. Siriprom ◽  
K. Teanchai ◽  
S. Kongsriprapan ◽  
J. Kaewkhao ◽  
N. Sangwaranatee
Keyword(s):  
Thermo Gravimetric Analysis ◽  
Chemical Properties ◽  
Gravimetric Analysis ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
X Ray ◽  
Physical And Chemical ◽  
And Chemical Properties

The chemical and physical properties of topsoil and subsoil which collected from the cassava cropping area in Chonburi Province have been investigated. The characterization of both soil sample were used X-Ray Diffraction (XRD), Energy Dispersive X-Ray Fluorescence (EDXRF) while FTIR used to confirmed the formation of intermolecular bonding and Thermo-Gravimetric Analysis (TGA) used for investigated the crystalline. It was found that, the XRD pattern indicated quartz phase. The chemical composition by XRF reported that the soils samples consist of Si, Al, Ca, Fe, K, Mn, Ti, Cr, Zn, Ag and Cu. and TGA results, noticed that the removal of moisture and organics material.

scholarly journals Effects of Continuous Cropping of Dictyophora on Soil Physical and Chemical Properties, Microbial Biomass and Enzyme Activity

2021 ◽  
Vol 8 (7) ◽  
pp. 214-220
Author(s):  
Long Tong ◽  
◽  
Hongyan Li ◽  
Xiaoming Liu ◽  
Bin Li ◽  
...  
Keyword(s):  
Enzyme Activity ◽  
Ph Value ◽  
Chemical Properties ◽  
Available Phosphorus ◽  
Continuous Cropping ◽  
Physical And Chemical Properties ◽  
Factors Affecting ◽  
The One ◽  
Physical And Chemical ◽  
And Chemical Properties

The continuous obstacle of Dictyophora indusiata has become the one of the main factors affecting the healthy development of D. indusiata industry. In order to study the effects of continuous cropping of D. indusiata on the soil environment, four treatments were used in this study: no planted (CK), planted for 1 years (1Y), continuous cropping for 2 years (2Y) and continuous cropping for 3 years (3Y), to determined of the yield of D. indusiata, soil physical and chemical properties, microbial content and enzyme activity. The results showed that the yield and soil pH value decreased with the increase of continuous cropping years, and the contents of organic matter, total nitrogen, total phosphorus and total potassium, C/N and C/P also increased with the increase of continuous cropping years. Soil availability decreased with the increase of continuous cropping years, the content of alkaline nitrogen, available phosphorus and available potassium decreased by 12.25%, 28.91% and 24.86% at 3Y compared with 1Y, respectively. The biomass of bacteria, actinomycetes and fungi and the total amount of microorganism in soil increased at 1Y compared with CK, but with the increase of continuous cropping years, the biomass of bacteria and actinomycetes and the total amount of microorganism decreased significantly, while the biomass of fungi increased significantly; the continuous cropping of D. indusiata also decreased the value of bacteria/fungi in soil. The enzyme activities of the soil were higher than those of the unplanted plots, however, the activities of urease, catalase, peroxidase, sucrase, phosphatase and protease decreased with the increase of continuous cropping years. In a word, with the increase of continuous cropping, the acidity of rhizosphere soil increased, the availability of soil nutrients and the activity of soil enzymes decreased, the biomass of soil microorganisms, bacteria and actinomycetes decreased. However, the increase of fungal biomass led to the decline of soil texture.

scholarly journals Use of Cerium Nitrate Nanoparticles in Biological Environment Along with the Factors Effecting It: An Empirical Overview

2021 ◽  
Author(s):  
Zarish Fatima ◽  
Sameer Quazi ◽  
Shreelaxmi Gavas ◽  
Tomasz Karpiński
Keyword(s):  
Biological Activities ◽  
Chemical Properties ◽  
Physical And Chemical Properties ◽  
Medical Field ◽  
Physiochemical Properties ◽  
Synthesis Of Nanoparticles ◽  
Biological Environment ◽  
Physical And Chemical ◽  
Nano Ceria ◽  
And Chemical Properties

The advancement in the production and usage of the cerium oxide nanoparticles have diverted the attention of scientists towards their usage in medical field and therapeutic usage. The clinical usage of these Nano ceria is based on their ability to moderate the oxidative stress and this is only because of their ability to change their valent state from +3 to +4 which makes them ideal for scavenging radicals for use in a number of systemic and neurodegenerative disorders. This review aims to synthesize the basic methods used for the synthesis of nanoparticles along with the use of ligand, stabilizing agent and other components. This review also concludes that how various physical and chemical properties of nanoparticles effect the basic biological activities such as antimicrobial activity, cytotoxicity and many others. However, during the standardization, some of the physiochemical properties, methods used for preparation and catalytic abilities must be taken into account.

SENSITIVITY ANALYSIS IN OIL SPILL MODELS: CASE STUDY USING ADIOS

1995 ◽  
Vol 1995 (1) ◽  
pp. 898-900 ◽  
Author(s):  
Roy Overstreet ◽  
Andrzej Lewandowski ◽  
William Lehr ◽  
Robert Jones ◽  
Debra Simecek-Beatty ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Oil Spill ◽  
Oil Spills ◽  
Chemical Properties ◽  
First Order ◽  
Mass Losses ◽  
Data Inquiry ◽  
Physical And Chemical ◽  
And Chemical Properties

ABSTRACT The Hazardous Material Response and Assessment Division (HAZMAT) at the National Oceanic and Atmospheric Administration uses the oil weathering software package named Automated Data Inquiry for Oil Spills (ADIOS) to investigate the oil weathering process. This model combines a database of physical and chemical properties of oils with a simulation model computing mass losses, density, viscosity, and water content of an oil spill due to evaporation, dispersion, and emulsification. A first-order sensitivity analysis of the ADIOS evaporation algorithm indicates that it might be possible to provide a taxonomy of oils with respect to the reliability of results generated by the model.

scholarly journals Factors Affecting the Setting Time of Fly Ash-Based Geopolymer

2016 ◽  
Vol 841 ◽  
pp. 90-97 ◽  
Author(s):  
Antoni ◽  
Stephen Wibiatma Wijaya ◽  
Djwantoro Hardjito
Keyword(s):  
Fly Ash ◽  
Initial Temperature ◽  
Ph Value ◽  
Setting Time ◽  
Chemical Properties ◽  
Curing Temperature ◽  
Factors Affecting ◽  
Ph Values ◽  
Physical And Chemical ◽  
And Chemical Properties

Fly ash is a waste from coal burning, that are generated with fluctuation both in its physical and chemical characteristics. This characteristics of fly ash when used in the making of geopolymer concrete will greatly affect the final products obtained. The pH value measured in fly ash, according previous research, can influence the setting time of geopolymer and fly ash with high pH values can cause flash-setting in the concrete. Understanding more clearly about the factors that affect the setting time of fly ash based geopolymer is important for further progress and development of the material. It was found that factors that influence the setting time of geopolymer was not only from the physical and chemical properties of the fly ash itself. Other factors such as composition and mix design, manufacturing process and environmental conditions can also affect its setting time. The experimental results showed that fly ash particle size, CaO and MgO content, in addition to ratio of sodium silicate and sodium hydroxide in the alkali solution, molarity of NaOH, initial temperature of the mixture, curing temperature, and mix volume could potentially influence the setting time of the geopolymer mixture.

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