Results 51 to 60 of about 63,548 (216)
Soil pH and Solubility of Aluminum, Iron, and Phosphorus in Ultisols: the Roles of Humic Acid [PDF]
Journal of Tropical Soils, 2013 Soil reaction (pH), aluminum (Al), iron (Fe) and phosphorus (P) are the soil properties that are related to each other. Their role on the growth and development of plant is very significant.
Hairil Ifansyah
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Production, Characterization and Design of Applications of Regenerated Humic Acids [PDF]
, 2011 Předkládaná disertační práce se zabývá huminovými látkami (HL), zejména huminovými kyselinami a jejich solemi, tj. humáty. V práci je prezentována literární rešerše o huminových látkách, stručně je zmíněna historie výzkumu huminových látek, obsáhle jsou ...
David, Jan
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Humic acid protein complexation [PDF]
, 2008 Interactions of purified Aldrich humic acid (PAHA) with lysozyme (LSZ) are investigated. In solution LSZ is moderately positively and PAHA negatively charged at the investigated pH values.
Koopal, L.K. +4 more
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Study on Lignite Humic Acids(III)On the Nitro Humic Acids.
Journal of the Fuel Society of Japan, 1955 亞炭フミン酸から諸種の條件によりニトロフミン酸の製造を行い, 各種條件で得られたニトロフミン酸の性質からフミン酸に対する硝酸の作用の概要を調べた。その結果フミン酸に対する硝酸の作用の最大のものは酸化反応であり, 加水分解反応もまた大きな作用であることを知つた。また酸化反応はフミン酸構成単位の脂肪族鎖を切断する方向に進行する。このことは稍々多量に製造したニトロフミン酸につきその示性式を求めることにより, さらに明白となつたまた。従来フミン酸と稍酸の反応で全く見落されていたシアン化水素並びにアンモニヤの生成を知り, その定量を行い, それらの生成がフミン酸のフェノール性に基くことを推定した。またフミン酸とジアゾメタンの反応によりO-メチル化以外に一部ジアゾメタンの附加が起ることを認め ...
Kozo Higuchi +2 more
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Characterization of methylated humic acids [PDF]
, 2011 Hlavní náplní této bakalářské práce bylo vhodně charakterizovat vlastnosti methylovaných huminových kyselin. Byla provedena rešerše o modifikacích kyselých funkčních skupin huminových látek a byly vybrány vhodné experimentální metody pro posouzení vlivu ...
Solná, Irena
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Controls on the composition and lability of dissolved organic matter in Siberia's Kolyma River basin [PDF]
, 2012 High-latitude northern rivers export globally significant quantities of dissolved organic carbon (DOC) to the Arctic Ocean. Climate change, and its associated impacts on hydrology and potential mobilization of ancient organic matter from permafrost, is ...
A. Davydova +84 more
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Chirality and the origin of atmospheric humic-like substances [PDF]
, 2010 Aerosol water extracts and atmospheric humic-like substances (HULIS) obtained from PM2.5-fraction aerosol samples collected in a rural/continental background environment and in an urban environment in spring and summer, and at a tropical site that was ...
Maenhaut, Willy +4 more
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Sen'i Gakkaishi, 2006 Humic acid that is an accumulation of ancient plants degraded with microbiological action was used as a ...
Miyuki Matsuda +5 more
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Stability of salts and complexes of humic acids [PDF]
, 2009 Základem práce je studium vlivu přítomnosti kovů inkorporovaných do struktury huminových látek při tepelné zátěži za přítomnosti vzdušného kyslíku.
Nováčková, Kristýna
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Почвознание, агрохимия и екология, 2011 Different methods of coal separation and beneficiation create conditions for increasing the content of extractable humic acids from coal. Usage of electromagnetic separation leads to reduction of total sulfur content below 1%.
Константин Митов +4 more
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