نتایج جستجو برای: NO3

تعداد نتایج: 7056  

Journal: :Environmental science & technology 2008
Leora Nanus Mark W Williams Donald H Campbell Emily M Elliott Carol Kendall

In the Rocky Mountains, there is uncertainty about the source areas and emission types that contribute to nitrate (NO3) deposition, which can adversely affect sensitive aquatic habitats of high-elevation watersheds. Regional patterns in NO3 deposition sources were evaluated using NO3 isotopes in five National Parks, including 37 lakes and 7 precipitation sites. Results indicate that lake NO3 ra...

2012
B. H. Kim Y. B. Lee M. A. Prelas T. K. Ghosh

Two types of ammonium uranyl nitrate (NH4)2UO2(NO3)4·2H2O and NH4UO2(NO3)3, were thermally decomposed and reduced in a TG-DTA unit in nitrogen, air, and hydrogen atmospheres. Various intermediate phases produced by the thermal decomposition and reduction process were investigated by an X-ray diffraction analysis and a TG/DTA analysis. Both (NH4)2UO2(NO3)4·2H2O and NH4UO2(NO3)3 decomposed to amo...

2008
Ya-Feng Li Li Jin Dan-Ping Li Long Zhang

The title compound, neodymium(III) oxide nitrate, which is isostructural with LaO(NO(3)), arose from a solvothermal reaction. The Nd ion (site symmetry m) is ten-coordinated by eight O atoms of NO(3) groups and two μ(2)-oxide ions. A three-dimensional structure is constructed by the inter-connection of NdO(10) polyhedra. The oxide ion and the N atom and one of the nitrate O atoms possess site s...

Journal: :Acta Crystallographica Section E Structure Reports Online 2008

Journal: :Journal of environmental quality 2008
John H Duff Anthony J Tesoriero William B Richardson Eric A Strauss Mark D Munn

Physical, chemical, hydrologic, and biologic factors affecting nitrate (NO3(-)) removal were evaluated in three agricultural streams draining orchard/dairy and row crop settings. Using 3-d "snapshots" during biotically active periods, we estimated reach-level NO3(-) sources, NO3(-) mass balance, in-stream processing (nitrification, denitrification, and NO3(-) uptake), and NO3(-) retention poten...

2007
Jonathan M. O’Brien Walter K. Dodds Kymberly C. Wilson Justin N. Murdock Jessica Eichmiller

We conducted NO3 – stable isotope tracer releases in nine streams with varied intensities and types of human impacts in the upstream watershed to measure nitrate (NO3 ) cycling dynamics. Mean ambient NO3 – concentrations of the streams ranged from 0.9 to 21,000 lg l NO3 – N. Major N-transforming processes, including uptake, nitrification, and denitrification, all increased approximately two to ...

Journal: :Dalton transactions 2016
Ramakirushnan Suriya Narayanan Vadapalli Chandrasekhar

The coordination behaviour of hexakis(3-pyridyloxy)cyclophosphazene (L) towards divalent metal ions is described. The reaction of L with hydrated metal nitrates afforded [{N3P3(O-C5H4N-3)6}2{Zn(H2O)3(NO3)}2{Zn(H2O)2(NO3)}2]n[NO3]2n·4nH2O·nCH3OH (1), [{N3P3(O-C5H4N-3)6}2{Zn(H2O)3(NO3)}2{Cu(NO3)}2]n[NO3]2n·4nH2O·nCH3CN (2), [{N3P3(O-C5H4N-3)6}2{(NO3)Cd-(μ-(NO3)-Cd(NO3)2(μ-(NO3)Cd(NO3)}]n·2nCH3OH·...

2018
M. Breida S. Alami Younssi A. Bouazizi B. Achiou M. Ouammou M. El Rhazi

In the framework of understanding the transport mechanism that governs the filtration of NO3- solution through a γ-Al2O3 membrane with a nominal pore size of 5 nm at low ultrafiltration, a series of various types of nitrate solutions and operating conditions were investigated. The effect of filtration parameters such as pH, applied pressure and NO3- concentration on the selectivity and permeabi...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید