Results 71 to 80 of about 56,230 (157)

Diammonium sodium hexafluoroaluminate, (NH4)(2)NaAlF6 [PDF]

, 2006
Diammonium sodium hexafluoroaluminate, (NH4) 2NaAlF6, obtained by hydrothermal synthesis, comprises [AlF6](3-) octahedra forming a face-centred cubic (fcc) arrangement, with Na+ cations filling all octahedral interstices and NH4+ cations filling all ...
Wang, C. X., Mi, J. X., 宓锦校, Luo, S. M., Liu, X. X., Wei, Z. B.   +5 more
core  

Solubility Data in the Ternary NH4HCO3-NH4VO3-H2O and (NH4)(2)CO3-NH4VO3-H2O Systems at (40 and 70) degrees C

, 2016
Effective separation of NH4VO3 from NH4HCO3 or (NH4)(2)CO3 solution is an important step in the newly proposed vanadium production process based on sodium salt roasting. The solubility data for NH4HCO3-NH4VO3-H2O and (NH4)(2)CO3-NH4VO3-H2O systems at (40
Zhang, Yi, Du, Hao, Zheng, Shili, Yan, Hong, Wang, Shaona   +4 more
core   +1 more source

Influence of ammonium sulfate on the corrosion behavior of AZ31 magnesium alloy in chloride environment

Journal of Magnesium and Alloys
Electrochemical corrosion of AZ31 magnesium alloy in the NH4+-SO42−-Cl− environment is studied. Effect of NH4+ overshadows that of Cl− as the (NH4)2SO4 concentration is 0.005 M or higher, yielding an evolution from localized corrosion to uniform ...
Feng Ge, Zhongyu Cui, Yue Liu, Li Lei, Xin Wang, Hongzhi Cui   +5 more
doaj   +1 more source

Predicting in vitro culture medium macro-nutrients composition for pear rootstocks using regression analysis and neural network models

Frontiers in Plant Science, 2016
Two modeling techniques [artificial neural network-genetic algorithm (ANN-GA) and stepwise regression analysis] were used to predict the effect of medium macro-nutrients on in vitro performance of pear rootstocks (OHF and Pyrodwarf). The ANN-GA described
S. eJamshidi, A. eYadollahi, H. eAhmadi, M.M. eArab, Maliheh eEftekhari   +4 more
doaj   +1 more source

Is the NH4+-induced growth inhibition caused by the NH4+ form of the nitrogen source or by soil acidification? [PDF]

, 2022
Soil acidification often occurs when the concentration of ammonium (NH4+) in soil rises, such as that observed in farmland. Both soil acidification and excess NH4+ have serious adverse effects on crop growth and food production.
He, Xinhua, Ye, Jing, Gao, Jingwen, Wang, Qiang, Yong, Jean W. H., Ma, Junwei, Yu, Yijun, Yu, Qiaogang, Yong, Jean W.H, Liu, Haitian, Wang, Feng   +10 more
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Influence of pre-crop and root architecture on the mobilization of non-exchangeable NH4+

Plant, Soil and Environment, 2014
It is well established that non-exchangeable NH4+ is an important N source for plants. However, release from clay minerals only occurs when the NH4+ concentration of the mineral environment declines below a certain level.
P. Beuters, T. Eichert, H.W. Scherer
doaj   +1 more source

The initial kinetics of NH3/NH4+ efflux from L3Teladorsagia circumcincta

, 2012
The initial rate of NH3/NH4+ accumulation in a medium containing L3Teladorsagia circumcincta was 0.18–0.6 pmol h− 1 larva− 1, which increased linearly with larval density.
Pedley, Kevin C., Brown, Simon, Walker, Lisa R., Muhamad, Noorzaid, Simcock, David C.   +4 more
core   +1 more source

Regulation of Apoplastic NH4  +Concentration in Leaves of Oilseed Rape

, 1998
Regulation of apoplastic NH4  + concentration in leaves of oilseed rape (Brassica napus L.) was studied using a vacuum-infiltration technique that allowed controlled manipulations of the apoplastic solution.
Jan Kofod Schjoerring, Kent Høier Nielsen   +1 more
core   +1 more source

Synthesis of MgFe layered double hydroxide/biochar composite with satisfactory NH4+ adsorption via HPO42− intercalation

Industrial Crops and Products
An effective adsorbent for ammonium (NH4+) is necessary to remove this pollutant from wastewater and prevent eutrophication and algal blooms. Layered double hydroxides (LDHs) are effective adsorbents that are often combined with biochar (BC) for improved
Baoyuan Huang, Panfeng Tu, Junjie Liang, Xiaoqing Zhu, Lansheng Deng, Zhenxing Hu, Lifang Deng   +6 more
doaj   +1 more source

GAJARDOITE-(NH4), (NH4)As3+ 4O6Cl2[(Ca0.5□0.5)(H2O)5], A NEW MINERAL FROM THE KHOVU-AKSY DEPOSIT, EASTERN SIBERIA, RUSSIA [PDF]

The new mineral gajardoite-(NH4), ideally (NH4)As3+4O6Cl2[(Ca0.5□0.5)(H2O)5], is found at the Khovu-Aksy Ni-Co deposit, Republic of Tyva, Russia. Gajardoite-(NH4) occurs as tiny lamellar coarsely hexagonal or irregular curved and divergent crystals up to
R. Škoda, D.I. Belakovskiy, V.V. Gurzhiy, A.A. Agakhanov, A.V. Kasatkin, N.V. Chukanov   +5 more
core   +2 more sources