Impact of a Long-Term Fire Retardant (Fire Trol 931) on the Physico-chemical Properties of Leachates from a Mediterranean Forest Soil: a Short-Term, Lab-Scale Study

2015 ◽  
Vol 226 (5) ◽  
Author(s):  
Sofia Koufopoulou ◽  
Charalampos Michalopoulos ◽  
Athina Pappa ◽  
Nikolaos Tzamtzis
Keyword(s):  
Forest Soil ◽  
Chemical Properties ◽  
Fire Retardant ◽  
Mediterranean Forest ◽  
Short Term ◽  
Physico Chemical

scholarly journals Effects of dietary fat and carbohydrate on appetite vary depending upon site and structure

2004 ◽  
Vol 92 (S1) ◽  
pp. S23-S26 ◽  
Author(s):  
Stephen French
Keyword(s):  
Body Weight ◽  
Food Intake ◽  
Dietary Fat ◽  
Chemical Properties ◽  
Present Review ◽  
Dietary Composition ◽  
Levels Of Processing ◽  
Short Term ◽  
Physico Chemical

The present review summarises the effects of different carbohydrate and fat structures on food intake and appetite and the differences in response at various levels of processing of macronutrients. Several physico-chemical properties of carbohydrate and fat molecules appear to influence the short-term satiating properties. However, long-term substantiation of these findings expressed in terms of food intake or body weight is not currently available. Such studies will be required to make clear recommendations regarding dietary composition to aid satiety.

Effect of fire retardant application on phosphorus leaching from Mediterranean forest soil: short-term laboratory-scale study

2006 ◽  
Vol 15 (3) ◽  
pp. 287 ◽  
Author(s):  
A. Pappa ◽  
N. Tzamtzis ◽  
S. Koufopoulou
Keyword(s):  
Forest Soil ◽  
Inductively Coupled Plasma ◽  
Pinus Halepensis ◽  
Fire Retardant ◽  
Drainage Water ◽  
Laboratory Scale ◽  
Mediterranean Forest ◽  
Annual Rainfall ◽  
Inductively Coupled

The application of fire retardants for forest fire prevention purposes can result in chemicals leaching from soil to the drainage water during the annual rainfall period. In addition, wildland fires can have an impact on the leaching of various chemicals from treated forest soils. In leachates, large concentrations of phosphorus (P) – one of the major components of long-term retardants – could affect the groundwater quality. In this present study, the leaching of phosphorus (contained in FIRE-TROL 931 – a long-term fire retardant based on polyphosphates) from a typical Mediterranean forest soil, was studied at the laboratory scale. The concentrations of P from the application of retardant in the resulting leachates from pots, containing forest soil and pine trees (Pinus halepensis), alone and in combination with fire, were determined by an inductively coupled plasma analytical method. The leaching of P, under the conditions used, was found to be a small percentage of the initially applied P quantities. However, it was different among the treated samples affected by both plant and fire conditions.

scholarly journals Biological and biochemical properties in evaluation of forest soil quality

2014 ◽  
Vol 56 (1) ◽  
pp. 23-29 ◽  
Author(s):  
Ewa Błońska ◽  
Jarosław Lasota
Keyword(s):  
Enzyme Activity ◽  
Forest Soil ◽  
Soil Quality ◽  
Soil Ph ◽  
Chemical Properties ◽  
Biochemical Properties ◽  
Essential Elements ◽  
Forest Site ◽  
Physico Chemical ◽  
Density And Biomass

Abstract The aim of this study was to assess the possibility of using biological and biochemical parameters in the evaluation of forest soil quality and changes caused by land use. The study attempted to determine a relationship between the enzymatic activity of soil, the number of earthworms and soil physico-chemical properties. The study was carried out in central Poland in adjoining Forest Districts (Przedbórz and Smardzewice). In soil samples taken from 12 research plots, basic physico-chemical properties, enzyme activity (dehydrogenase, urease) and density and biomass of earthworms were examined. Enzyme activity showed a large diversity within the forest site types studied. The correlations between the activity of the enzymes studied and C/N ratio indicated considerable importance of these enzymes in metabolism of essential elements of organic matter of forest soils. Urease and dehydrogenase activity and earthworm number showed susceptibility to soil pH, which confirmed relationships between enzyme activity and abundance of earthworms and soil pH in H2O and KCl.

Immediate- and Short-term Wildfire Impact on Soil Microbial Diversity and Activity in a Mediterranean Forest Soil

Soil Science ◽  
2019 ◽  
Vol 184 (2) ◽  
pp. 35-42 ◽  
Author(s):  
Federica Borgogni ◽  
Anna Lavecchia ◽  
Giovanni Mastrolonardo ◽  
Giacomo Certini ◽  
Maria Teresa Ceccherini ◽  
...  
Keyword(s):  
Microbial Diversity ◽  
Forest Soil ◽  
Mediterranean Forest ◽  
Short Term ◽  
Soil Microbial Diversity ◽  
Soil Microbial

scholarly journals Effect of Long Term Fertilization on Content and Uptake of Macro Nutrients in Sorghum-Wheat Cropping Sequence - A Review

2018 ◽  
Author(s):  
Jayalakshmi Mitnala
Keyword(s):  
Crop Production ◽  
Chemical Properties ◽  
Central India ◽  
Crop Productivity ◽  
Npk Fertilizers ◽  
Intensive Farming ◽  
Physico Chemical ◽  
Food Grain ◽  
High Yielding Varieties

Sorghum and wheat are the premier food grain crops of the peninsular central India and in particular of Maharashtra. There has been a phenomenal increase in its production after mid sixties with the introduction of high yielding varieties. Increase in production was achieved through increase in area as well as productivity. Inputs like improved seeds, irrigation, fertilizers etc. has given a boost to productivity. Continuous addition of chemical fertilizers poses problems like toxicity due to high amounts of salts as residues of fertilizer and deterioration of the physico-chemical properties. Organic manure ameliorates this problem as organic matter helps in increasing adsorptive power of soil for cations and anions particularly phosphate and nitrate. Long term manuring and fertilizer experiments conducted in India showed declining trend in productivity even with the application of NPK fertilizers under modern intensive farming. Neither organic source alone nor inorganic fertilizers can achieve sustainability in crop production under intensive agriculture, where nutrient turnover in soil-plant system is much higher. However, their combined use appeared promising in enhanced crop productivity besides improving soil fertility.

scholarly journals Studies on Sediment Physico-Chemical Properties of the Ulhas River Flowing along Dombivli City near Mumbai

2015 ◽  
Vol 52 ◽  
pp. 11-21
Author(s):  
Amol M. Jadhav ◽  
Pravin U. Singare
Keyword(s):  
Industrial Waste ◽  
Waste Treatment ◽  
Chemical Properties ◽  
Control Measures ◽  
Pollution Level ◽  
Pollution Load ◽  
Residential Areas ◽  
Physico Chemical ◽  
Heavy Pollution

Ulhas River which is one of the most polluted rivers of Mumbai receives heavy pollution load from the nearby Dombivali industrial belt. Previous studies reported along the Dombivali industrial belt has indicated that the pollution level is so much alarming that it has created threat to nearby residential areas and also to the Ulhas River flowing in the outskirts of the Dombivali City. It is feared that the toxic chemicals present in the industrial waste might affect the sediment ecosystem of the river. Hence this has provoked us to carry the systematic and detailed study of physico chemical properties of the sediment samples collected along the Ulhas River. The study was done during the year 2012 and 2013, at the sites where the industrial discharge from Dombivli industrial belt Phase I and Phase II joins the Ulhas River. The study was performed to understand the physico chemical properties such as pH, alkalinity, chloride and phosphates. Results of the study reveal that there is an urgent requirement for systematic and regular monitoring of pollution level along the Ulhas River which will further help in improving the industrial waste treatment procedure adopted, along the Dombivli industrial belt. It is expected that such scientific studies will be useful to determine the extent of pollution control measures required in order to avoid long term irreparable damage to the Ulhas River ecosystem.

Strain Energy and Behaviour of Overconsolidated Soils

1967 ◽  
Vol 4 (3) ◽  
pp. 326-333 ◽  
Author(s):  
Elmer W Brooker
Keyword(s):  
Mechanical Properties ◽  
Strain Energy ◽  
Large Scale ◽  
Chemical Properties ◽  
Earth Pressure ◽  
Quantitative Evidence ◽  
Physico Chemical ◽  
Overconsolidated Clays ◽  
Overconsolidated Soils

Bjerrum recently presented a strain energy hypothesis which explains qualitatively the behaviour of overconsolidated clays and the phenomena of long-term slope failures in these soils. Quantitative evidence, gathered from a series of large-scale consolidation tests, is presented here which supports the strain energy hypothesis. The coefficient of earth pressure at rest was found to be a function of strain energy at a given value of OCR. It is also shown that the degree of disintegration of overconsolidated soils during a slaking test is related to strain energy. It is inferred from the results that mineralogy and the capacity of a soil to adsorb strain energy are related. The evidence suggests that certain physico-chemical properties may be quantitatively related to mechanical properties through the concept of strain energy.

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