Results 21 to 30 of about 59,690 (299)
Column Fractionation of High Pressure Polyethylene and Physical Properties of the Fractions
Kobunshi Kagaku, 1969 1009の大量分別により得られた1区分約10gの分別試料を用い, 広範囲な分子量範囲にわたり, 高圧法分岐ポリエチレンの力学的性質を明らかにした。力学的性質に及ぼす短鎖分岐の影響については, エチレンとプロピレン, ないしブテ-1との共重合体と高圧法分岐ポリエチレンとを比較することにより, また長鎖分岐の影響については, 一連のcharacterizeした高圧法ポリエチレンの測定試料を用い, 分布の影響については分別試料, 未分別試料を用いることにより明らかにした。一般にいわれているように, 分布幅の狭い試料は強い強度を有することは, 高圧法分岐ポリエチレンにもあてはまった。さらに各種強度と基本的物性 (分子量, [η], 密度など) との関係を広範囲な分子量域にわたって測定した結果より ...
Murata, Katsuhiko, Kobayashi, Sadao
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The Organic Matter of Chernozem
Бюллетень Почвенного института им. В.В. Докучаева, 2017 Theories and points of view of soil science classics, such as V. V. Dokuchaev, I. V. Turin and M. M. Kononva on chernozem organic matter are reviewed in this work.
B. M. Kogut
doaj +1 more source
REE fractionation during granite weathering and removal by waters and suspended loads: Sr and Nd isotopic evidence [PDF]
, 2001 Very few studies deal with REE (rare earth element) mobility within the system soil–soil solution–streamwater. In this article, we try to characterize the fractionation and the migration of the REE in a granite-derived soil system located in a small ...
Dominique Aubert +5 more
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GCB Bioenergy, 2019 When aboveground materials are harvested for fuel production, such as with Sorghum bicolor, the sustainability of annual bioenergy feedstocks is influenced by the ability of root inputs to contribute to the formation and persistence of soil organic ...
Sarah Fulton‐Smith +1 more
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Initial Recovery of Organic Matter of a Grass-Covered Constructed Soil after Coal Mining
Revista Brasileira de Ciência do Solo, 2016 Revegetation is essential to improve the quality of constructed soils. This study investigated effects of perennial grasses on total organic carbon (TOC) stock, organic matter (OM) fractions and on quality of a recently constructed soil, after coal ...
Otávio dos Anjos Leal +5 more
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Photo‐induced isotopic fractionation [PDF]
, 2000 This paper presents a systematic method for the analysis of photo-induced isotopic fractionation. The physical basis for this fractionation mechanism centers on the fact that isotopic substitution alters the energy levels, molecular symmetries, spin ...
Charles E. Miller +3 more
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Contribution à l'étude structurale par PY/CG-SM de la matière organique liée aux particules fines (0-50 µm) dans quelques sols sous formations naturelles de longue durée au Burkina Faso [PDF]
Biotechnologie, Agronomie, Société et Environnement, 2011 Contribution to the study by PY/GC-MS of organic matter linked to fine particles (0-50 µm) in some soils under long-term natural formations in Burkina Faso. The study aims to enhance the knowledge on organic matter of Arenosols, Ferralsols, and Cambisols
Pallo, FJP., Lemée, L., Amblès, A.
doaj
Fractionation and determination of chemical and physical properties of Dates’ fibers
Journal of the Saudi Society of Agricultural Sciences, 2022 Dates are considered as highly nutritious and healthy food. It is a rich source of DF including pectin, cellulose, hemicellulose, and lignin. The present study aims to fraction and characterize dates’ insoluble fibers to reach a better understanding of ...
Siham N.K. Al-Shaaibi +3 more
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REVIEW OF SOME PROMISING FRACTIONAL PHYSICAL MODELS [PDF]
International Journal of Modern Physics B, 2013 Fractional dynamics is a field of study in physics and mechanics investigating the behavior of objects and systems that are characterized by power-law nonlocality, power-law long-term memory or fractal properties by using integrations and differentiation of non-integer orders, i.e., by methods in the fractional calculus.
openaire +3 more sources
Ionic liquids and deep eutectic solvents for lignocellulosic biomass fractionation [PDF]
, 2016 Lignocellulosic biomass has gained extensive research interest due to its potential as a renewable resource, which has the ability to overtake oil-based resources.
Kollau, L.J.B.M. +11 more
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