دانلود مقالات ISI درباره 15N + ترجمه فارسی

Observing in-phase single-quantum 15N multiplets for NH2/NH3+ groups with two-dimensional heteronuclear correlation spectroscopy

Keywords: Multiplets; AX3 spin system; AX2 spin system; Heteronuclear correlation; 15N;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2008 سفارش ترجمه

High enrichment of 15N by chromatographic chemical process

Keywords: 15N; Isotope; Enrichment; Separation coefficient (ɛ); HETP

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2008 سفارش ترجمه

1H, 13C, 15N NMR and nJ(C, H) coupling constants investigation of 3-piperidino-propylamine: A combined experimental and theoretical study

Keywords: NMR; 1H; 13C; 15N; Coupling constants; 3-Piperidino-propylamine; GIAO; DFT

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2008 سفارش ترجمه

Measurement of asymbiotic N2 fixation in Australian agriculture

Keywords: Free-living bacteria; Associative N fixation; Acetylene reduction; 15N; Diazotrophs

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2008 سفارش ترجمه

Recovery of 15N-urea 10 years after application to a Douglas-fir pole stand in coastal British Columbia

Keywords: Pseudotsuga menzeisii; Fertilization; 15N; Long-term change; N budget; N distribution

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2008 سفارش ترجمه

Differing nitrogen use strategies of two tropical rainforest late successional tree species in French Guiana: Evidence from 15N natural abundance and microbial activities

Keywords: Soil; Litter; Nitrate; Nitrification; Tree rooting; 15N; Eperua falcata; Dicorynia guianensis; Tropical forest

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2008 سفارش ترجمه

NMR evaluation of adipocyte fatty acid binding protein (aP2) with R- and S-ibuprofen

Keywords: aP2; NMR; 15N; Chemical shift map; Temperature dependence; Ibuprofen; Binding studies;

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2008 سفارش ترجمه

Root uptake of N-containing and N-free low molecular weight organic substances by maize: A 14C/15N tracer study

Keywords: Re-sorption; Maize; Uptake; Low molecular weight organic substances; Alanine; Glucose; Acetate; Nitrate; 14C; 15N

دانلود رایگان متن کامل مقاله ISI 9 صفحه سال انتشار : 2008 سفارش ترجمه

Nitrification in Kochi backwaters

Keywords: ammonium oxidation; nitrification; 15N; nitrite loss; estuary; N-Serve

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2008 سفارش ترجمه

Relationship between nitrifier and denitrifier community composition and abundance in predicting nitrous oxide emissions from ephemeral wetland soils

Keywords: 15N; Ammonia monooxygenase; amoA; Denitrification; DGGE; N2O; Nitrification; Nitrous oxide; Nitrous oxide reductase; nosZ; q-PCR; Stable isotope

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2008 سفارش ترجمه

Do interactions with soil organisms mediate grass responses to defoliation?

Keywords: AM fungi; Clipping; Decomposer food web; Grassland; Phleum pratense; Plant carbon allocation; Plant nitrogen dynamics; Plant–soil interactions; Soil nematodes; 15N

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2008 سفارش ترجمه

Microbially available carbon in buried riparian soils in a glaciated landscape

Keywords: Alluvium; Groundwater; Biogeochemistry; Rhode Island; Glacial outwash; Denitrification; Eutrophication; Lithology; Riparian zones; Organic matter; Microbial biomass; Stable isotopes; Carbon; 13C; 15N; Subsurface

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2008 سفارش ترجمه

Effect of grazing intensity on carbon and nitrogen in soil and vegetation in a meadow steppe in Inner Mongolia

Keywords: HG, heavy grazing; LG, light grazing; MG, medium grazing; OC, organic carbon; TC, total carbon; TN, total nitrogenDairy cattle; 15N; 13C; Soil properties; Vegetation; Rangeland

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2008 سفارش ترجمه

Effect of litter quality and soil fungi on macroaggregate dynamics and associated partitioning of litter carbon and nitrogen

Keywords: Water-stable macroaggregates; 13C; 15N; Residue decomposability; Incubation; Microbial biomass; Ergosterol; CO2; Captan

دانلود رایگان متن کامل مقاله ISI 13 صفحه سال انتشار : 2008 سفارش ترجمه

Nitrogen rhizodeposition in agricultural crops: Methods, estimates and future prospects

Keywords: 15N; Labelling; Nitrogen; Rhizodeposition; Rhizodeposits; Stable isotopes

دانلود رایگان متن کامل مقاله ISI 19 صفحه سال انتشار : 2008 سفارش ترجمه

Trophic shift of stable isotopes and fatty acids in Collembola on bacterial diets

Keywords: Collembola; Neutral lipids; 15N; 13C; Biomarker; Fatty acid; Bacteria; Food source

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2007 سفارش ترجمه

Evaluation of bioavailability of individual amino acids in Diplodus puntazzo larvae: Towards the ideal dietary amino acid profile

Keywords: Diplodus puntazzo; amino acids; bioavailability; limiting amino acid; 15N; GC-C-IRMS

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2007 سفارش ترجمه

Chara hispida beds as a sink of nitrogen: Evidence from growth, nitrogen uptake and decomposition

Keywords: Submerged macrophytes; Charophytes; 15N; Uptake; Decomposition rates; Ruidera lakes

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2007 سفارش ترجمه

Use of 15N-labelled nitrogen deposition to quantify the source of nitrogen in runoff at a coniferous-forested catchment at Gårdsjön, Sweden

Keywords: 15N; Nitrate; DON; Forest; runoff

دانلود رایگان متن کامل مقاله ISI 9 صفحه سال انتشار : 2007 سفارش ترجمه

Nitrate leaching in soil: Tracing the NO3− sources with the help of stable N and O isotopes

Keywords: Legumes; N mineralization; NO3− leaching; Isotopes; 15N; 18O

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2007 سفارش ترجمه

Release of C and N from roots of peas and oats and their availability to soil microorganisms

Keywords: 13C; 15N; Below-ground plant biomass; Feedback; Rhizodeposition; Rhizodeposits; Soil microbial biomass; Wick method

دانلود رایگان متن کامل مقاله ISI 11 صفحه سال انتشار : 2007 سفارش ترجمه

Rhizodeposition of C and N in peas and oats after 13C–15N double labelling under field conditions

Keywords: 13C; Below-ground carbon; Below-ground nitrogen; Double labelling technique; 15N; Rhizodeposits; Soil microbial biomass; Stem feeding method

دانلود رایگان متن کامل مقاله ISI 11 صفحه سال انتشار : 2007 سفارش ترجمه

Contribution of nitrification and denitrification to N2O emissions from urine patches

Keywords: Denitrification; Grass-clover; Grassland; Gross nitrification; Loss ratio; 15N; Nitrous oxide; pH; Urine

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2007 سفارش ترجمه

Handling, purification and recovery of isotopically enriched water or gases for isotopic tracing experiments with ion beam analysis in electrochemistry and physics

Keywords: 32.10.Bi; 41.75.Ak; 82.47.−a; 68.55.−a; 73.50.−h; Stable isotopes; Enriched water; Enriched gases; 18O; 17O; 2H; 13C; 15N; Isotopic tracing; Ion beam analysis; Electrochemistry; Applied physics;

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2007 سفارش ترجمه

A GC/MS method for the assessment of 15N and 13C incorporation into soil amino acid enantiomers

Keywords: Amino acid enantiomer; 13C; 15N; Incubation; GC/MS; Atom percentage excess (APE)

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2007 سفارش ترجمه

A method for the determination of nitrification rates in oligotrophic marine seawater by gas chromatography/mass spectrometry

Keywords: Nitrification; 15N; GC/MS; f-ratio; North-east Atlantic; AMT

دانلود رایگان متن کامل مقاله ISI 13 صفحه سال انتشار : 2007 سفارش ترجمه

Depth profiling of carbon and nitrogen in copper using nuclear reactions

Keywords: 25.40.Ny; 25.45.De; 29.30.EpDepth profiling; 15N; NRA; RNRA; 15N(d, α0)13C; 15N(p, αγ)12C

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2006 سفارش ترجمه

Surge ammonium uptake in macroalgae from a coral atoll

Keywords: Ammonium; Macroalgae; 15N; Coral reefs; Surge uptake

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2006 سفارش ترجمه

The intramolecular hydrogen bonds in some Schiff bases derived from dendrimers: DAB-Am-8 and PAMAM-G2

Keywords: 1H; 15N; 13C NMR; Schiff base; Hydrogen bonds; Dendrimers

دانلود رایگان متن کامل مقاله ISI 5 صفحه سال انتشار : 2006 سفارش ترجمه

Tracing N, K, Mg and Ca released from decomposing biomass to new tree growth. Part I: A model system simulating harvest residue decomposition on conventionally harvested clearfell sites

Keywords: Whole-tree harvesting; Sitka spruce; Stable isotopes; 15N; 41K; 26Mg; 44Ca; Soil sustainability

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2006 سفارش ترجمه

Tracing N, K, Mg and Ca released from decomposing biomass to new tree growth. Part II: A model system simulating root decomposition on clearfell sites

Keywords: Whole-tree harvesting; Sitka spruce; Stable isotopes; 15N; 41K; 26Mg; 44Ca; Soil sustainability

دانلود رایگان متن کامل مقاله ISI 7 صفحه سال انتشار : 2006 سفارش ترجمه

The role of arbuscular mycorrhiza in legume symbiotic performance

Keywords: Legumes; 15N; Rhizobium; Symbiotic dependence; Arbuscular mycorrhiza

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2006 سفارش ترجمه

Land use effects on gross nitrogen mineralization, nitrification, and N2O emissions in ephemeral wetlands

Keywords: Mineralization; Nitrification; Denitrification; Nitrous oxide; Agriculture; 15N; Isotope dilution

دانلود رایگان متن کامل مقاله ISI 9 صفحه سال انتشار : 2006 سفارش ترجمه

A novel GC/MS technique to assess 15N and 13C incorporation into soil amino sugars

Keywords: Amino sugar; 13C; 15N; Incubation; GC/MS; Atom percentage excess (APE)

دانلود رایگان متن کامل مقاله ISI 9 صفحه سال انتشار : 2006 سفارش ترجمه

Short and long-term effects of elevated CO2 on Lolium perenne rhizodeposition and its consequences on soil organic matter turnover and plant N yield

Keywords: Elevated CO2; Ryegrass; 14C; 15N; Rhizodeposition; Priming effect

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2006 سفارش ترجمه

N2O emissions and product ratios of nitrification and denitrification as affected by freezing and thawing

Keywords: Nitrous oxide; N2O; Freeze–thaw; Denitrification; Nitrification; 15N; Respiration; Catch crop

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2006 سفارش ترجمه

Determination of ammonium regeneration rates in the oligotrophic ocean by gas chromatography/mass spectrometry

Keywords: Ammonium; Regeneration; 15N; GC/MS; Indophenol; f-ratio; North–East Atlantic

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2006 سفارش ترجمه

13C and 15N natural abundance of the soil microbial biomass

Keywords: 15N; 13C; Carbon; Natural abundance; Nitrogen; Stable isotopes; Soil organic matter

دانلود رایگان متن کامل مقاله ISI 10 صفحه سال انتشار : 2006 سفارش ترجمه

Emissions and spatial variability of N2O, N2 and nitrous oxide mole fraction at the field scale, revealed with 15N isotopic techniques

Keywords: Denitrification; Nitrous oxide; Dinitrogen; Mole fraction; 15N; Spatial variability, Spatial dependence

دانلود رایگان متن کامل مقاله ISI 11 صفحه سال انتشار : 2006 سفارش ترجمه

Microbial immobilisation and turnover of 15N labelled substrates in two arable soils under field and laboratory conditions

Keywords: 15N; Nitrogen turnover; Immobilisation; Isotope pool dilution; Microbial Biomass

دانلود رایگان متن کامل مقاله ISI 11 صفحه سال انتشار : 2006 سفارش ترجمه

Organic C and N stabilization in a forest soil: Evidence from sequential density fractionation

Keywords: Soil organic matter; Particle density; 13C; 15N; 14C; MRT; Lignin; Hydroxyfatty acids; Cutin; Suberin; X-ray diffraction; Glycoprotein; Amino sugar; Protein; Amino acid; Smectite; Magnetite; Acid/aldehyde ratio; Carbon; Nitrogen; Sulfur; Soil C stabilizat

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2006 سفارش ترجمه

Emission of N2O, N2 and CO2 from soil fertilized with nitrate: effect of compaction, soil moisture and rewetting

Keywords: N2O; 15N; N2; Denitrification; Soil respiration; Soil moisture; Bulk density; N fertilizer; Rewetting

دانلود رایگان متن کامل مقاله ISI 12 صفحه سال انتشار : 2006 سفارش ترجمه

The 15N chemical shifts in mixed NB2Si and NBSi2 environments of Si3B3N7-A theoretical investigation

Keywords: 31.15.-p; 31.15.Ar; 31.15.Ew; 31.15.Md; 31.15.Ne; 33.25.+k; 76.60.-k; 76.60.Cq; NMR; 15N; Silicon boron nitride; Ceramics; Quantum chemistry; Mixed environments; NB2Si; NBSi2; Ab initio;

دانلود رایگان متن کامل مقاله ISI 13 صفحه سال انتشار : 2006 سفارش ترجمه

The fate of experimentally deposited nitrogen in mesocosms from two Canadian peatlands

Keywords: Peatland; Sphagnum; Nitrogen deposition; Nitrogen cycle; DON; 15N

دانلود رایگان متن کامل مقاله ISI 14 صفحه سال انتشار : 2006 سفارش ترجمه

Organic matter composition and potential trace gas production of permafrost soils in the forest tundra in northern Siberia

Keywords: Black carbon; 13C; Carbon dioxide; Lignin; Methane; 15N; Nitrous oxide; Organic matter; Permafrost; Soil moisture; Temperature

دانلود رایگان متن کامل مقاله ISI 14 صفحه سال انتشار : 2006 سفارش ترجمه

Evaluation of techniques to detach particle-associated microorganisms from rumen contents

Keywords: ADS; anaerobic dilution solution; DAPA; diaminopimelic acid; DM; dry matter; FAB; fluid-associated bacteria; LRP; large rumen particles; M; methanol; N; nitrogen; NB; nucleic bases; OM; organic matter; PAB; particle-associated bacteria; SRP; small rumen p

دانلود رایگان متن کامل مقاله ISI 16 صفحه سال انتشار : 2006 سفارش ترجمه

Factors controlling decomposition of soil organic matter in fallow systems of the high tropical Andes: A field simulation approach using 14C- and 15N-labelled plant material

Keywords: Soil organic matter; Decomposition; Carbon; Nitrogen; Modelling; Limiting factors; 14C; 15N; Fallow; Andes;

دانلود رایگان متن کامل مقاله ISI 16 صفحه سال انتشار : 2006 سفارش ترجمه

Interference by amino acids during the determination of 15N ammonium in soil

Keywords: Amino acids; Dissolved organic nitrogen; Glycine; Glutamine; Interference; Method; 15N; Gross mineralization;

دانلود رایگان متن کامل مقاله ISI 4 صفحه سال انتشار : 2005 سفارش ترجمه

Nitrogen transfer between high- and low-quality leaves on a nutrient-poor Oxisol determined by 15N enrichment

Keywords: Decomposition; Gliricidia sepium; Green mulch; 15N; Litter quality; Theobroma grandiflorum;

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2005 سفارش ترجمه

Abundance and trophic structure of macro-decomposers on alpine pastureland (Central Alps, Tyrol): effects of abandonment of pasturing

Keywords: Soil fauna; Trophic structure; 15N; Alpine meadows;

دانلود رایگان متن کامل مقاله ISI 8 صفحه سال انتشار : 2005 سفارش ترجمه