Search Results - "Rys, G"
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Meta-analysis of New Zealand's nitrous oxide emission factors for ruminant excreta supports disaggregation based on excreta form, livestock type and slope class
Published in The Science of the total environment (25-08-2020)“…Globally, animal excreta (dung and urine) deposition onto grazed pastures represents more than half of anthropogenic nitrous oxide (N2O) emissions. To account…”
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2
The temperature dependence of dicyandiamide (DCD) degradation in soils: A data synthesis
Published in Soil biology & biochemistry (01-07-2008)“…Dicyandiamide (DCD, C 2H 4N 4) is a nitrification inhibitor that has been studied for more than 80 years. However, there are few papers that have examined the…”
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3
Synthesis of new representatives of A3B-type carboranylporphyrins based on meso-tetra(pentafluorophenyl)porphyrin transformations
Published in Beilstein journal of organic chemistry (12-04-2024)“…A carboranylporphyrin of A3B-type bearing a single pentafluorophenyl ring was prepared through the regioselective nucleophilic aromatic substitution reaction…”
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4
Statistical analysis of nitrous oxide emission factors from pastoral agriculture field trials conducted in New Zealand
Published in Environmental pollution (1987) (01-03-2014)“…Between 11 May 2000 and 31 January 2013, 185 field trials were conducted across New Zealand to measure the direct nitrous oxide (N2O) emission factors (EF)…”
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Multicomponent Molecular Systems Based on Porphyrins, 1,3,5-Triazine and Carboranes: Synthesis and Characterization
Published in Molecules (Basel, Switzerland) (21-09-2022)“…2,4,6-Trichloro-1,3,5-triazine (cyanuric chloride) is an excellent coupling reagent for the preparation of highly structured multifunctional molecules. Three…”
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6
Quantification of reductions in ammonia emissions from fertiliser urea and animal urine in grazed pastures with urease inhibitors for agriculture inventory: New Zealand as a case study
Published in The Science of the total environment (01-11-2013)“…Urea is the key nitrogen (N) fertiliser for grazed pastures, and is also present in excreted animal urine. In soil, urea hydrolyses rapidly to ammonium (NH4+)…”
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Nitrous oxide emissions from urea fertiliser and effluent with and without inhibitors applied to pasture
Published in Agriculture, ecosystems & environment (01-03-2016)“…•Urea fertiliser EF1 varied from 0.03% to 1.52% of N applied.•Farm dairy effluent (FDE) EF1 ranged from 0.06% to 0.94% of N applied.•Adding DCD or nBTPT to…”
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8
Refining the New Zealand nitrous oxide emission factor for urea fertiliser and farm dairy effluent
Published in Agriculture, ecosystems & environment (15-04-2016)“…•An increase in N2O data from urea fertiliser and FDE justifies a refinement of EF1.•An analysis of NZ urea fertiliser and FDE data produced a mean EF1 value…”
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Repeated annual use of the nitrification inhibitor dicyandiamide (DCD) does not alter its effectiveness in reducing N2O emissions from cow urine
Published in Animal feed science and technology (23-06-2011)“…Urine deposited by grazing animals in patches is the single largest source of N2O emissions in New Zealand. In recent years, a nitrification inhibitor,…”
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Journal Article Conference Proceeding -
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Effect of temperature on dicyandiamide (DCD) longevity in pastoral soils under field conditions
Published in Agriculture, ecosystems & environment (15-03-2014)“…•Dicyandiamide (DCD) degradation rate and mean soil temperature were linearly related.•At 8 and 16°C, estimated DCD half-lives were 39±6 and 25±3 days,…”
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11
Nitrous oxide emissions from drained peat soil beneath pasture
Published in New Zealand journal of agricultural research (01-10-2016)“…Nitrous oxide (N 2 O) emissions (E N2O ) from drained peat soils used for pastoral agriculture have not been measured throughout the year in New Zealand. In…”
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12
Use of shallow samples to estimate the total carbon storage in pastoral soils
Published in New Zealand journal of agricultural research (01-03-2013)“…Using data from pastoral soils sampled by horizon at 56 locations across New Zealand, we conducted a meta-analysis. On average, the total depth sampled was…”
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13
Accounting for the utilization of a N₂O mitigation tool in the IPCC inventory methodology for agricultural soils
Published in Nutrient cycling in agroecosystems (01-05-2007)“…In this study we review recent studies where dicyandiamide was used as a nitrification inhibitor to reduce both N₂O emissions from urine patches and nitrate…”
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14
Synthesis and properties of new carborane-containing polydiphenylene-N-phenylphthalimidine
Published in Russian chemical bulletin (01-08-2023)“…Carborane-containing polydiphenylene- N -phenylphthalimidine was synthesized for the first time. The compound is of interest because of a possibility of…”
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15
Estimating the uncertainty of methane emissions from New Zealand's ruminant animals
Published in Agricultural and forest meteorology (16-03-2007)“…In New Zealand, the principal source of methane emissions to the atmosphere ( E C H 4 ) is ruminant animals, up to ca. 85 million sheep and cattle fed by…”
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The first carborane triflates: synthesis and reactivity of 1-trifluoromethanesulfonylmethyl- and 1,2-bis(trifluoromethanesulfonylmethyl)-o-carborane
Published in Dalton transactions : an international journal of inorganic chemistry (07-03-2005)“…The first carborane triflates, namely, 1-trifluoromethanesulfonylmethyl-o-carborane (2) and 1,2-bis(trifluoromethanesulfonylmethyl)-o-carborane (7), were…”
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17
Carbaborane-Substituted 1,2-Diphosphetanes
Published in Angewandte Chemie International Edition (09-05-2011)“…The ring and I: Air‐ and water‐stable 1,2‐diphosphetanes (see structure) were prepared in high yield utilizing the unique electronic and structural properties…”
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18
Synthesis and 31P NMR study of chromium, molybdenum, and palladium complexes with 9-substituted 1,2-bis(diphenylphosphanyl)-o-carboranes
Published in Russian journal of general chemistry (2017)“…9-Substituted 1,2-bis(diphenylphosphanyl)- o -carboranes were synthesized from the corresponding 9-R- o -carboranes (R = I, i -Pr, SMe), and their complexes…”
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Moral Reasoning, Classroom Behavior, and Sociometric Status Among Elementary School Children
Published in Developmental psychology (01-09-1994)“…Relations among moral reasoning, classroom behavior, and sociometric status were investigated in a sample of 133 2nd and 3rd graders. It was hypothesized that…”
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Synthesis and molecular structure of (R,R\S,S)-[PdCl 2{ {1,2-(PPhCl) 2C 2B 10H 10} }]
Published in Polyhedron (01-01-1998)“…The complex ( R,R\ S,S)-[PdCl 2{1,2-(PPhCl) 2C 2B 10H 10}] (1) was prepared by the reaction of ( R,R\ S,S)-1,2-(PPhCl) 2C 2B 10H 10 with [(COD)PdCl 2] (COD =…”
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