Vertisol has a clay texture, high micropores, and water nutrient absorption ability. The content of causes the air to decrease, thus inhibiting root development. Stretching structure is expected increase soil porosity reduce ion absorption. This study examines interactions between organic matter percent sand on availability. was arranged according factorial Completely Randomized Design (CRD), r...

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Abstract Background Organic materials carbon is mainly sequestrated in humin. However, the (C) stability of humin with organic amendments different types soils affected by or soil as well enzymatic reaction important for understanding C sequestration mechanism soil. Results In this study, straw and straw-derived biochar were incorporated into three soils. Using 13 nuclear magnetic resonance (NM...

A marked and progressive decrease in epidermal hydroxyproline accompanied in duced epidermal carcinoma by methylcholanthrene in C3H mice. A decrease was also noted in the benzene-treated controls; but this was reversible, whereas the effect pro duced by the carcinogen was not. A progressive increase in epidermal tyrosine was ob served which was more marked in the carcinogen-treated animals than...

This work reports a straightforward and high-yielding synthesis of alkyl levulinates (ALs), class promising biofuel, renewable solvent, chemical feedstock origin. ALs were prepared by the acid-catalyzed esterification levulinic acid (LA) alcoholysis carbohydrate-derived platforms, such as furfuryl alcohol (FAL) α-angelica lactone (α-AGL). Phosphotungstic (PTA) was chosen solid catalyst for tran...

The most important types of organic matter in geosphere have already been mentioned. These are the fulvic and humic acids, humin, kerogen (in coal, oil shales, source rocks or scattered in the sediments), bitumen, oil, gas and graphite. All these forms are genetically related and are part of the carbon cycle in nature, or carbon cycle in the geosphere (larger circle in Fig. 1.4). Central place ...

The most important types of organic matter in geosphere have already been mentioned. These are the fulvic and humic acids, humin, kerogen (in coal, oil shales, source rocks or scattered in the sediments), bitumen, oil, gas and graphite. All these forms are genetically related and are part of the carbon cycle in nature, or carbon cycle in the geosphere (larger circle in Fig. 1.4). Central place ...