scholarly journals Morphology, physico-chemical properties and classification of some vertisols of Jabalpur, Madhya Pradesh

2006 ◽  
Vol 1 (2) ◽  
pp. 181-184
Author(s):  
P.N. Tripathi
Keyword(s):  
Chemical Properties ◽  
Madhya Pradesh ◽  
Physico Chemical

scholarly journals Soil Heterogeneity Reflected in Biogeography of Beech Forests in the Borderland Between the Bohemian Massif and the Outer Western Carpathians

2014 ◽  
Vol 33 (4) ◽  
Author(s):  
Pavel Samec ◽  
Aleš Kučera ◽  
Klement Rejšek
Keyword(s):  
Bohemian Massif ◽  
Chemical Properties ◽  
Specific Weight ◽  
Soil Heterogeneity ◽  
Western Carpathians ◽  
Volume Weight ◽  
Physico Chemical ◽  
Outer Western Carpathians ◽  
Chemical Properties Of Soils

AbstractSoil environment characteristics naturally affect the biogeographical classification of forests in central Europe. However, even on the same localities, different systems of vegetation classification de-scribe the forest types according to the naturally dominant tree species with different accuracy. A set of 20 representative natural beech stands in the borderland between the Bohemian Massif (Hercyni-an biogeographical subprovince) and the Outer Western Carpathians (Westcarpathian subprovince) was selected in order to compare textural, hydrostatic, physico-chemical and chemical properties of soils between the included geomorphological regions, bioregions and biotopes. Differences in the soils of the surveyed beech stands were mainly due to volume weight and specific weight, maximum capillary capacity (MCC), porosity, base saturation (BS), total soil nitrogen (N

Soil Morphology, Physico - Chemical Properties and Classification of Typical Soils of Mwala District, Kenya

2015 ◽  
Vol 4 (2) ◽  
pp. 156-170 ◽  
Author(s):  
Anne Karuma ◽  
Charles Gachene ◽  
Balthazar Msanya ◽  
Peter Mtakwa ◽  
Nyambilila Amuri ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Soil Morphology ◽  
Physico Chemical

Classification of Natural and Thermo-Modified Peat by Class-Modeling Techniques

2016 ◽  
Vol 683 ◽  
pp. 596-600
Author(s):  
Aleksey Zarubin ◽  
Natalia Chukhareva
Keyword(s):  
Latent Variables ◽  
Chemical Properties ◽  
Component Composition ◽  
Thermal Modification ◽  
Raw Material ◽  
Data Matrix ◽  
Prediction Errors ◽  
Physico Chemical ◽  
Modeling Techniques

Significant attention is paid to the production of peat-based materials in modern days. The study explores the influence of natural peat thermal modification on its properties by applying class-modeling techniques. Modification of different types of peat is achieved by heating at 250 °C. The set of peat properties such as component composition, g-factor and IR-spectra is used to obtain data matrix. It is shown that class-modeling techniques, such as partial least-squares discriminant analysis (PLS-DA) and simple independent modeling of class analogy (SIMCA), allow estimating peat class (natural or modified) by a set of properties without prediction errors by using three latent variables. According to the results of classification, it is established that thermal modification can be considered as a means of regulating the composition and physico-chemical properties of natural peats as a raw material

scholarly journals Physico Chemical Monitoring Tests of Geothermal Water Production Wells

2019 ◽  
Vol 70 (11) ◽  
pp. 3783-3787
Author(s):  
Mioara Sebesan ◽  
Gabriela Elena Badea ◽  
Radu Sebesan ◽  
Ilona Katalin Fodor ◽  
Simona Bungau ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Geothermal Waters ◽  
Chemical Monitoring ◽  
Geothermal Fluids ◽  
Industrial Buildings ◽  
Physico Chemical ◽  
Production Wells ◽  
Deep Reservoir ◽  
Physical And Chemical

This paper presents a study of the physico-chemical properties of geothermal fluids, coming from some wells in Sacuieni, Bihor County, Romania. The thermal energy of the geothermal waters studied is used for heating some industrial buildings, greenhouses, and administrative buildings. Continuous monitoring of physical and chemical characteristics of geothermal waters is needed. Based on this fact, a classification of these waters has been made according to their chemical composition. Using a silica-enthalpy thermodynamic model, it was possible to estimate the deep reservoir temperature, and compare it with the temperatures at depth, calculated by the silica (quartz and chalcedony) and Na+/K+ geothermometers. The WATCH program is used to estimate the mineral deposits that may accumulate due to boiling and cooling of the geothermal fluid when it is used in heat exchangers The results are confirmed by XRD spectrometric and thermogravimetric analyses.

Dalbergia Congestiflora Standl.: Wood Structure And Physico-Chemical Properties Compared With Other Central American Species Of Dalbergia

IAWA Journal ◽  
1996 ◽  
Vol 17 (3) ◽  
pp. 327-341 ◽  
Author(s):  
Hans Georg Richter ◽  
Vlf-Joachim Krause ◽  
Claudia Muche
Keyword(s):  
Chemical Properties ◽  
High Density ◽  
Central American ◽  
Wood Structure ◽  
Physico Chemical ◽  
Ray Cells ◽  
Species Groups ◽  
Central American Species ◽  
Heartwood Extractives

Wood structure and selected physico-chemical properties of a rare Mexican species, tentatively identified as Dalbergia congestiflora, are described and compared with other Central American species of Dalbergia. On account of their distinct wood structure, four species groups can be distinguished: 1) D. granadillo, D. hypoleuca, D. lineata and D. retusa ('cocobolo') are characterised by mainly apotracheal diffuse-inaggregates parenchyma, large and few vessels, high density (0.89-1.35 g/cm3), identical heartwood colour, and chemical composition of extractives (D. granadillo, D. retusa); 2) D. tucuruensis (including D. cubitquitzensis) and D. palo-escrito are identical in all aspects but distinct from the coco bolo group on account of differences in parenchyma distribution, heartwood colour and extractives composition (D. tucuruensis), and the consistently lower density (~0.80 g/cm3); 3) D. congestiflora and D. funera (= D. calderonii) differ markedly in heartwood colour and somewhat in heartwood extractives composition but share a high density and similar wood structural pattern characterised primarily by relatively small and frequent vessels, banded parenchyma and the presence of prismatic crystals in ray cells; 4) D. stevensonii is very similar in wood structure to D. tucuruensis but has a much higher density and different heartwood extractives composition. These results indicate that the combination of wood structure and chemistry of heartwood extractives may be successfully employed for intrageneric classification of Dalbergia.

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