Results 51 to 60 of about 56,230 (157)

Effects of NO3-/NH4+ ratios on growth, enzyme activity and nitrogen assimilation-related gene expression in Toona sinensis seedlings

open access: yes
Nitrogen is an essential nutrient for plants. Different nitrate (NO3-)/ammonium (NH4+) ratios have different effects on plant growth. However, the underlying mechanism in Toona sinensis remains unclear.
Taotao SHAO   +5 more
core   +1 more source

Potential for nitrogen fixation and nitrification in the granite-hosted subsurface at Henderson Mine, CO

open access: yesFrontiers in Microbiology, 2011
The existence of life in the deep terrestrial subsurface is established, yet few studies have investigated the origin of nitrogen that supports deep life.
Elizabeth eSwanner   +2 more
doaj   +1 more source

Ammonia (NH3 and NH4) measured on water bottle samples during Aurora Australis cruise AU9806

open access: yes, 2013
Ammonia (NH3 and NH4) measured on water bottle samples during Aurora Australis cruise ...
Watson, Ros, Ros Watson (7996607)
core   +1 more source

(NH4)2Cd3(SO4)4·5H2O [PDF]

open access: yes, 2006
The title compound, diammonium tricadmium tetrakis(sulfate) pentahydrate, (NH4)(2)Cd-3(SO4)(4)center dot 5H(2)O, was formed during an attempted synthesis of the langbeinite, (NH4)(2)Cd-2 (SO4)(3). The structure has two layers, one containing Cd octahedra
Swain, Diptikanta, Row, GuruTN
core  

Contribution à l'étude du système ternaire H2O-(NH4)3Al(C2O4)3-(NH4)2MO2O5(C2O4)2. L'isotherme 25 °C

open access: yes, 2001
The H2O-(NH4)2Mo2O5(C2O4)2 binary system has been investigated in the -20 to 75°C temperature range. An incongruently melting dihydrate is observed. The solubility curves at 25°C for H2O-(NH4)3Al(C2O4)3-(NH4)2Mo2O5(C2O4)2 system have been established ...
B.F. Mentzen   +3 more
core   +1 more source

Structure refinement of (NH4)3Al2(PO4)3 prepared by ionothermal synthesis in phosphonium based ionic liquids – a redetermination

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2019
After crystallization during ionothermal syntheses in phosphonium-containing ionic liquids, the structure of (NH4)3Al2(PO4)3 [triammonium dialuminum tris(phosphate)] was refined on the basis of powder X-ray diffraction data from a synchrotron source ...
Christopher P. Nicholas   +2 more
doaj   +1 more source

Données cristallographiques sur deux arséniates mixtes ; Cd NH4 AsO4.H2O et Mn NH4 AsO4.H2O

open access: yes, 1970
Averbuch Marie-Thérèse, Durif-Varambon André. Données cristallographiques sur deux arséniates mixtes ; Cd NH4 AsO4.H2O et Mn NH4 AsO4.H2O. In: Bulletin de la Société française de Minéralogie et de Cristallographie, volume 93, 1, 1970. pp.
Averbuch-Pouchot, Marie-Thérèse   +3 more
core   +1 more source

Thermal propertiesandphasetransitioninthe fluoride, (NH4)3SnF7

open access: yes, 2017
Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.Calorimetric, dilatometric and differential thermal analysis studies were performed on (NH4)3SnF7 for a wide range of temperatures and pressures.
Laptash, N. M.   +4 more
core   +1 more source

Ammonium Adsorption from Water by Macadamia Husk-Derived Biochar Forms: Mechanism and Behavior Study

open access: yesIndonesian Journal of Chemistry
Ammonium (NH4+) is a nutrient and a pollutant of the aquatic environment. This study aims to evaluate the ability to recover NH4+ in water through the adsorption studies of macadamia husk-derived biochar at different pyrolysis temperatures (300, 450, and
Phuong Van Nguyen
doaj   +1 more source

СОРБЦІЯ ІОНІВ МІДІ (ІІ) З ВОДИ ФОСФОРИЛЬОВАНОЮ СОСНОВОЮ ТИРСОЮ

open access: yesВісник Національного технічного університету України «Київський політехнічний інститут імені Ігоря Сікорського»: Серія «Хімічна інженерія, екологія та ресурсозбереження», 2016
Вивчено вплив модифікаторів – розчинів аміаку, амонійних солей ортофосфорної й сульфатної кислот, сумішей фосфату амонію й карбаміду – на сорбційні властивості соснової тирси стосовно йонів міді. Установлено, що розчин аміаку, на відміну від (NH4)2SO4 і (
Олександр Петрович Хохотва   +1 more
doaj   +1 more source

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