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Topics referred to by the same term
15N may refer to: Nitrogen-15 (15N), an isotope of nitrogen Δ15N, use of the isotope in paleoclimatology and hydrology Nitrogen-15 nuclear magnetic resonance
15N
Analytical technique
or just simply 15N NMR) is a version of nuclear magnetic resonance spectroscopy that examines samples containing the 15N nucleus. 15N NMR differs in several
Nitrogen-15 nuclear magnetic resonance spectroscopy
Nitrogen-15_nuclear_magnetic_resonance_spectroscopy
Correspondence between quaternions and 3D rotations
Rotation matrix 9n 6n 0 15n Quaternions * Without intermediate matrix 15n 15n 0 30n With intermediate matrix 9n + 12 6n + 12 0 15n + 24 Angle–axis Without
Quaternions and spatial rotation
Quaternions_and_spatial_rotation
Experiment in spectroscopy
heteronucleus (an atomic nucleus other than a proton), which is usually 13C or 15N. The spectrum contains a peak for each unique proton attached to the heteronucleus
Heteronuclear single quantum coherence spectroscopy
Heteronuclear_single_quantum_coherence_spectroscopy
Scientific technique
Nitrogen-15 (15N) tracing is a technique to study the nitrogen cycle using the heavier, stable nitrogen isotope 15N. Despite the different weights, 15N is involved
Nitrogen-15_tracing
Chemical element with atomic number 7 (N)
These reactions typically result in 15N enrichment of the substrate and depletion of the product. The heavy isotope 15N was first discovered by S. M. Naudé
Nitrogen
German light machine gun
The Bergmann MG 15nA was a World War I light machine gun produced by Germany starting in 1915. It used 100- and 200-round belts and utilized a bipod,
Bergmann_MG_15nA_machine_gun
Multirole and air superiority fighter family
under license in Japan by Mitsubishi in the period 1981–1997. F-15N Sea Eagle The F-15N was a carrier-capable variant proposed in the early 1970s to the
McDonnell_Douglas_F-15_Eagle
Measure of the ratio of stable isotopes nitrogen-15 and nitrogen-14
delta-N-15 is a measure of the ratio of the two stable isotopes of nitrogen, 15N:14N. Two very similar expressions for δ15N are in wide use in hydrology.
Δ15N
1958 experiment in DNA replicatication
(but non-radioactive) 15N isotope is also functional. E. coli was grown for several generations in a medium containing NH4Cl with 15N. When DNA is extracted
Meselson–Stahl_experiment
Furthermore, the DSS 1H signal may be used to indirectly reference 13C and 15N shifts using a simple ratio calculation [1]. Unfortunately, many biomolecular
Protein chemical shift re-referencing
Protein_chemical_shift_re-referencing
Chemical compound
nitrite-15N can be used instead of normal sodium nitrite as their reactivity is nearly identical in most reactions. The obtained products carry isotope 15N and
Sodium_nitrite
Largest recorded iceberg by area
approximately 1,700 km2 or 500 sq nmi). Three additional pieces were named B-15M, B-15N, and B-15P. Iceberg B-15A then moved farther north into the southern Pacific
Iceberg_B-15
Analytical technique based on isotopic abundance
water at a faster rate than 15N, resulting in more 15N entering the aquifer. 15N is roughly 10-20‰ as opposed to the natural 15N values of 2-8‰. The inorganic
Isotope_analysis
American audio equipment manufacturer
B-15N Portaflex". Premier Guitar. "the B-15 underwent constant change, and the B-15 was replaced by the B-15N in 1961. In 1962, Ampeg updated the B-15N
Ampeg
Airport
Jenkins Airport (FAA LID: 15N) is a public use airport located one nautical mile (2 km) west of the central business district of Wyoming, a town in Kent
Jenkins_Airport
Set of methods providing two-dimensional data
particularly a proton (1H) and a heteronucleus such as carbon (13C) or nitrogen (15N). This method gives one peak per pair of coupled nuclei, whose two coordinates
Two-dimensional nuclear magnetic resonance spectroscopy
Two-dimensional_nuclear_magnetic_resonance_spectroscopy
Small tree grown for its edible pods and landscaping
believed to be from the genus Rhizobium. However, a study measuring the 15N-signal (isotopic signature) in the tissue of the carob tree did not support
Carob
Line of electric guitar and bass amplifiers
and the other "Instruments". Portaflex B-15N (1960s) BT-15 (1966/1967-?) transistor amp head Portaflex B-15N (1970s) Portaflex PF-350 class-D amp head
Ampeg_Portaflex
Aviation Airport Laurel N06 Laurel Airport Smyrna 38N Smyrna Airport Wyoming 15N Jenkins Airport Other military airports Dover DOV DOV KDOV Dover Air Force
List_of_airports_in_Delaware
resonance (NMR). It has been estimated that up to 20% of 13C and up to 35% of 15N shift assignments are improperly referenced. Given that the structural and
Nuclear magnetic resonance chemical shift re-referencing
Nuclear_magnetic_resonance_chemical_shift_re-referencing
Light rail line in Cuenca, Ecuador
20 Milchichig 19 Aeropuerto 18 Terminal Terrestere 17 Chola Cuencana 16 15n Gaspar Sangurima 14n Antonio Borrero Tomás Ordóñez 14s 13n Padre Aguirre
Cuenca_Tramway
Nuclear magnetic resonance spectroscopy effect
spin polarization from one population of spin-active nuclei (e.g. 1H, 13C, 15N etc.) to another via cross-relaxation. A phenomenological definition of the
Nuclear_Overhauser_effect
Variation in resonant frequency of identical atomic nuclei in a magnetic field
themselves). The electron distribution of the same type of nucleus (e.g. 1H, 13C, 15N) usually varies according to the local geometry (binding partners, bond lengths
Chemical_shift
District of Madhya Pradesh in India
northern part, the Narmada river flows from east to west. Latitude 22º.45N 23º.15N, Longitude 78º.38E 79º.38E, Area 5125.55 Square Kilometers, 359.8 meters
Narsinghpur_district
NMR experiment
This experiment requires a purified sample of protein prepared with 13C and 15N isotopic labelling, at a concentration greater than 0.1 mM, and is thus generally
HNCOCA_experiment
Brown dwarf in the constellation Hydra
7% 14N and about 0.3% 15N. Compared to solar values and the ratio of WISE 1828, the atmosphere of WISE 0855 is enriched in 15N. The nitrogen isotope ratio
WISE_0855−0714
Plant ecologist
org/news/2025-nas-election/ Buchmann, Nina (1993). Wege und Umsetzungen von 15N-Ammonium und 15N-Nitrat in einem Fichtenjungbestand (Picea abies (L.) Karst.) (Thesis)
Nina_Buchmann
Chemical compound
moiety gives characteristic IR spectroscopic signature at 2117 cm−1. The 15N NMR spectrum shows a characteristic shift of 275 ppm upfield of nitric acid
N,N'-Dicyclohexylcarbodiimide
NMR experiment
This experiment requires a purified sample of protein prepared with 13C and 15N isotopic labelling, at a concentration greater than 0.1 mM, and is thus generally
HNCA_experiment
Chemical element with atomic number 3 (Li)
and 19F respectively. These two, together with 7Li, as well as 2H, 11B, 15N, 209Bi, and the stable isotopes of C, and O, are the only nuclides with low
Lithium
NASA sample return probe
solar wind nitrogen has a 15N/14N ratio of 2.18×10−3 (that is, ≈40% poorer in 15N relative to the terrestrial atmosphere). The 15N/14N ratio of the protosolar
Genesis_(spacecraft)
Chemical reaction
showed that even [15N](2R,3S)-2,3-bis(dimethylamino)butane, whose chirality results solely due to the difference between 14N and 15N (7% isotopic mass
Soai_reaction
Branch of biology that studies biological systems at the molecular level
from the 15N. They observed three distinct bands over the course of the experiment, corresponding to DNA made up entirely of 14N, entirely of 15N, and exactly
Molecular_biology
Seaside resort in Oulu, Finland
Finland. The resort can be reached year-round with the local bus routes 15 and 15N and during summertime with a trackless train called Potnapekka. The beach
Nallikari
Chemical element with atomic number 8 (O)
Isotope abundance half-life (t1/2) mode product 15O trace 122.27 s β+ 15N 16O 99.8% stable 17O 0.0384% stable 18O 0.205% stable Category: Oxygen view
Allotropes_of_oxygen
World War II British corvette class
aircraft while escorting convoy KMF-8 off Cape Tenes in Mediterranean Sea at 36-15N, 00-15E. 59 crew killed, 50 rescued. Lunenburg G T Davie, Lauzon, Quebec
Flower-class_corvette
Cyclic nitrogen compound with formula HN5
Perera SA, Gregusová A, Bartlett RJ (2009-04-01). "First Calculations of 15N−15N J Values and New Calculations of Chemical Shifts for High Nitrogen Systems:
Pentazole
nitrogen-14, which has an integer nuclear spin and thus a quadrupole moment, 15N has a fractional nuclear spin of one-half, which offers advantages for NMR
Isotopes_of_nitrogen
Species of creeping annual plant
30. ISBN 978-1-4020-3541-8. Sprent, J.I. (1996). "Natural Abundance of 15N and 13C in Nodulated Legumes and Other Plants in the Cerrado and Neighbouring
Mimosa_pudica
Ratio of magnetic moment to angular momentum
434100033(28) 7Li 1.03962×108 16.546 13C 6.72828×107 10.7084 14N 1.9331×107 3.077 15N −2.7116×107 −4.316 17O −3.6264×107 −5.772 19F 2.51815×108 40.078 23Na 7.0761×107
Gyromagnetic_ratio
15N isotopically labeled Pt-bearing cisplatin in human colon cancer cells. Cisplatin appears in the targeted nucleus of the colon cancer cells. 15N and
Nanoscale secondary ion mass spectrometry
Nanoscale_secondary_ion_mass_spectrometry
Challenger (nine built) CW-15D powered by Wright R-760 (three built) CW-15N powered by Kinner C-5 (three built) Data from Curtiss Aircraft 1907–1947
Curtiss-Wright_CW-15
American bassist (born 1966)
Freeman favors a Guild B-50 acoustic bass. He plays through an Ampeg B-15N amplifier for practices, but as it "does not like pedals", he also uses a
Matt_Freeman
Village in Punjab, Pakistan
is a village in the Punjab province of Pakistan. It is located at 30° 12' 15N 70° 8' 48E with an altitude of 1056 metres (3467 feet). Location of Palia
Palia,_Pakistan
quickly (<1 sec) generates the chemical shifts of both backbone (1H, 13C and 15N) and side chain (1H only) atoms as output (BMRB or Shifty format). The server
ShiftX
Chemical compound
receptors, with approximately 3x selectivity for CB1, having an EC50 of 0.15nM for human CB1 receptors and 0.41nM for human CB2 receptors. In its pure
CUMYL-PINACA
Chemical compound
Autotrophic Ammonia-Oxidizing Bacteria as Related to the Fate of 14C- and 15N-labeled Urea Added to Soil". Biol. Fert. Soil. 42 (2): 137–145. Bibcode:2005BioFS
Ninhydrin
Signal enhancement method
the signal from nuclei with negative gyromagnetic ratio such as 15N or 29Si. The 15N signal may be enhanced by a factor of 10 via INEPT. The pulse sequence
Insensitive nuclei enhanced by polarization transfer
Insensitive_nuclei_enhanced_by_polarization_transfer
service (link) If protons were knocked out, the stable isotopes 13C and 15N would be formed. Timmer, John (25 November 2017). "Lightning strikes leave
Isotopes_of_oxygen
Soviet early warning radar
passed through trials as the P-15N, the radar being developed and produced by the Ulyanovsk Mechanical Plant. The P-15N introduced a more sensitive receiver
P-15_radar
Organic dye
DeFina, Steven C.; Dieckmann, Thorsten (2002). "Synthesis of selectively 15N- or 13C-labelled malachite green". Journal of Labelled Compounds and Radiopharmaceuticals
Malachite_green
Chemical compound
properties of the imidazole side chain has been characterized by 15N NMR spectroscopy. The two 15N chemical shifts are similar (about 200 ppm, relative to nitric
Histidine
Property of chemical elements
isotope ratios analyzed are 2H/1H, 18O/16O, and 17O/16O for ocean water, and 15N/14N for air. These isotope systems for lighter elements that exhibit more
Stable_isotope_ratio
Topics referred to by the same term
stable isotopes 13C:12C δ15N, a measure of the ratio of stable isotopes 15N:14N δ18O, a measure of the ratio of stable isotopes oxygen-18:oxygen-16 DeltaWing
Delta
Star in the constellation Scutum
Astronomy & Astrophysics. 547: A15. arXiv:1208.3282. Bibcode:2012A&A...547A..15N. doi:10.1051/0004-6361/201219540. S2CID 42961348. Portals: Astronomy Stars
Stephenson_2_DFK_1
Study of past and present water on Mars
For example, when compared with their terrestrial counterparts, 38Ar/36Ar, 15N/14N, and 13C/12C ratios of the Martian atmosphere are consistent with ~60%
Water_on_Mars
Spectroscopic technique based on change of nuclear spin state
employed to study a wide range of nuclei, including 1H, 2H, 6Li, 7Li, 13C, 15N, 17O, 19F, 25Mg, 29Si, 31P, 51V, 133Cs. Many of these nuclei are quadrupolar
Nuclear_magnetic_resonance
Nutrient for the human body
Rautureau J, Tomé D (April 1996). "Gastrojejunal kinetics and the digestion of [15N]beta-lactoglobulin and casein in humans: the influence of the nature and
Protein_(nutrient)
a commonly used reaction to profile hydrogen with an energetic 15N ion beam is 15N + 1H → 12C + α + γ (4.43 MeV) with a sharp resonance in the reaction
Nuclear_reaction_analysis
Field of structural biology
correlation has one peak for each H bound to a heteronucleus. Thus, in the 15N-HSQC, with a 15N labelled protein, one signal is expected for each nitrogen atom in
Nuclear magnetic resonance spectroscopy of proteins
Nuclear_magnetic_resonance_spectroscopy_of_proteins
Extinct genus of birds
by stable isotope analysis supports this. Levels of enrichment in 13C and 15N for two specimens of Aptornis otidiformis were compared with values for a
Adzebill
Chemical element with atomic number 8 (O)
Isotope abundance half-life (t1/2) mode product 15O trace 122.27 s β+ 15N 16O 99.8% stable 17O 0.0384% stable 18O 0.205% stable Category: Oxygen view
Oxygen
Federal motorway in Germany
planned but not implemented. For a connection of the two tracks Bundesstraße B 15n is in construction and will be the foundation of the Autobahn A 93 later
Bundesautobahn_93
American geneticist and molecular biologist (born 1930)
Stahl were able to separate DNA containing the heavy isotope of nitrogen, 15N, from DNA made of the lighter isotope, 14N. In their classic experiment,
Matthew_Meselson
Capital city of Pennsylvania, United States
RabbitEXPRESS bus service from York via Route 83N and from Gettysburg via Route 15N which serves both downtown Harrisburg and the main campus for Harrisburg
Harrisburg,_Pennsylvania
German machine gun
Front. The Bergmann MG 15nA was also used by the Asien-Korps in Sinai, Mesopotamia and Palestine. Being air-cooled, the Bergmann MG 15nA's barrel would overheat
MG_08
Compound of nitrogen with a formal oxidation state of –3
Stephen T. (2021). "Exceptional uranium(VI)-nitride triple bond covalency from 15N nuclear magnetic resonance spectroscopy and quantum chemical analysis". Nat
Nitride
Chemical and biochemical technique to follow reactions through using atomic isotopes
spectrometry (MS). Some of the most common stable isotopes are 2H, 13C, 15N, and 18O, which can further be produced into NMR solvents, amino acids, nucleic
Isotopic_labeling
the 13000 ppm overall range). Coupling of 195Pt to 1H, 13C, 31P, 19F or 15N has been reported through one up to four bonds (1J to 4J) and is commonly
Platinum-195 nuclear magnetic resonance
Platinum-195_nuclear_magnetic_resonance
Hardness scale
15, 30, 45 1⁄16 in (1.59 mm) ball Superficial: for soft coatings 100 1000 15N, 30N, 45N 15, 30, 45 spheroconical diamond† Superficial: for case-hardened
Rockwell_hardness_test
Agricultural amendment to promote plant health
wheat in relation to nitrogen and phosphorus fertilization as assessed by 15n techniques, Symbiosis, 34(2), 171-183. Brady, Nyle C. (2010). Elements of
Microbial_inoculant
Chemical element with atomic number 97 (Bk)
by bombarding 235U with 11B, 238U with 10B, 232Th with 14N or 232Th with 15N. It converts by electron capture to 242Cm with a half-life of 7.0±1.3 minutes
Berkelium
Chemical reaction used to synthesize quinolines
verbindungen—II, Untersuchung der skraupschen chinolin-synthese mit hilfe von 15N". Tetrahedron. 20 (12): 2773. doi:10.1016/S0040-4020(01)98495-9. Clarke,
Skraup_reaction
Relative proportion of an isotope as found in nature
12C 98.89 12 (formerly by definition) 13C 1.11 13.00335 14N 99.64 14.00307 15N 0.36 15.00011 16O 99.76 15.99491 17O 0.04 16.99913 18O 0.2 17.99916 28Si
Isotopic_abundance
Branch of molecular spectroscopy
of bending mode in 14N14N16O simulated with Spectralcalc. The weak superimposed spectrum is due to species containing 15N at natural abundance of 0.3%
Rotational–vibrational spectroscopy
Rotational–vibrational_spectroscopy
Biological rule stating that larger size organisms are found in colder environments
relation to environment". Science. 142 (3588): 15–23. Bibcode:1963Sci...142...15N. doi:10.1126/science.142.3588.15. PMID 17812501. Drezner, T. D. (2003-03-01)
Bergmann's_rule
Stars with a supergiant luminosity class with a spectral type of K or M
Astronomy & Astrophysics. 547: A15. arXiv:1208.3282. Bibcode:2012A&A...547A..15N. doi:10.1051/0004-6361/201219540. S2CID 53662263. Davies, Ben; de la Fuente
Red_supergiant
Rapid transit line of the Istanbul Metro system
11Ü, 11ÜS, 11Y, 12, 12A, 12C, 13M, 15, 15B, 15C, 15E, 15H, 15K, 15KÇ, 15M, 15N, 15P, 15R, 15S, 15T, 15Y, 15ŞN, 15Z, 16A, 16F, 16M, 16, 18, 18Ü, 18Y, 139
M5_(Istanbul_Metro)
Chemical reaction
design successful syntheses. An early study into the mechanism using 13C and 15N NMR indicated the intermediacy of the chalcone 6 and enamine 3. This data
Hantzsch_pyridine_synthesis
specific to the NMR spectra are not listed. The NMR data includes 1H,13C, 11B, 15N, 17O, 19F, 29Si, and 31P. The data were in the form of graphically displayed
Nuclear magnetic resonance spectra database
Nuclear_magnetic_resonance_spectra_database
method affords a √2 sensitivity enhancement for kinetically stable amide 15N–1H groups in proteins. Pervushin, K. V.; Wider, G.; Wüthrich, K. (1998).
ST2-PT
South Korean compact car
3 L Mazda TC I4 (1982–1984) 1.3 L Mazda TC LPG I4 (1982–1984) 1.5 L Opel 15N I4 1.5 L XQ I4 1.5 L XQ LPG I4 (1984–1989) 2.0 L Opel 20D diesel I4 (pickup)
Daewoo_Maepsy
Species of cephalopods
to occupy a high trophic level, at least in the Southern Ocean ecosystem. 15N ratios showed that this squid is a top predator.[clarification needed] Stable
Taningia_danae
Place in Arua District
Highway which continues on to Gulu. The coordinates of the town are: 02 39 15N, 31 08 44E (Latitude:2.65417; Longitude:31.14556).Okollo also lies in the
Okollo
Town in Islamabad C.T, Pakistan
in the Islamabad Capital Territory of Pakistan. It is located at 33° 29' 15N 73° 23' 5E with an altitude of 578 metres (1899 feet). Location of Dhok Tapialian
Dhok_Tapialian
Reduction of nitrate as a form of anaerobic respiration
heavier nitrogen isotope, 15N, in the residual matter. This selectivity leads to the enrichment of 14N in the biomass compared to 15N. Moreover, the relative
Denitrification
Genus of squids
Southern Ocean, like albatrosses and sperm whales. Their diet is unknown, but 15N ratios showed high values in their tissues which point towards either a high
Batoteuthis
(in Dutch). Nijgh & Van Ditmar. 1898. p. 259. Abraham Troostwijk werd den 15n Dec. 1863 te Zwolle geboren. Daar ook kreeg hij zijn opleiding als violist
List of music students by teacher: K to M
List_of_music_students_by_teacher:_K_to_M
Public transit system in Volusia County, Florida
Ridgewood - VTP 30 - 30 - 15 Archived February 21, 2022, at the Wayback Machine 15n/15s ITF - Main - Beach - Cedar - Ridgewood - Orange - MLK Jr. - South - Jean
Votran
that link three types of atomic nuclei, most typically consisting of 1H, 15N and 13C. These experiments are often used to assign specific resonance signals
Triple-resonance nuclear magnetic resonance spectroscopy
Triple-resonance_nuclear_magnetic_resonance_spectroscopy
Polish vehicle manufacturer based in Chorzów, Poland
left the factory in 1962. Shortly after, Konstal made short series 14N, 15N and WPK trams. In 1967, a prototype of an articulated tram type 102N was
Konstal
Laboratory technique to separate ions and polar molecules
elements. Additionally, they showed the ion-exchange separation of 14N and 15N isotopes in ammonia. At the start of the 1950s, Kraus and Nelson demonstrated
Ion_chromatography
Former US Shipping Company
Harris * John Bell 27.8.43 Torpedoed and sunk by U.410 off Sardinia at 37.15N 08.24E Alexander Mitchell Andreas Honcharenko William L. Yancey William H
J._H._Winchester_&_Company
Place in Uganda
Uganda's capital and largest city. The coordinates of the town are:00 41 15N, 32 36 31E (Latitude:-0.6875; Longitude:32.6085). Bamunanika is the hometown
Bamunanika
Statistical mechanics of quantum-mechanical systems
Condensed Matter Physics. 6: 15–38. arXiv:1404.0686. Bibcode:2015ARCMP...6...15N. doi:10.1146/annurev-conmatphys-031214-014726. ISSN 1947-5454. Schieve, William
Quantum_statistical_mechanics
Form of fusion power
3He → 4He + 2 1p + 12.86 MeV p–7 3Li 1p + 7Li → 2 4He + 17.2 MeV p–11 5B 1p + 11B → 3 4He + 8.7 MeV p–15 7N 1p + 15N → 12C + 4He + 5.0 MeV
Aneutronic_fusion
Technique for detecting quantum objects
centres arise from nearby nuclear spins, primarily due to nitrogen (14N or 15N) and, in some cases 13C atoms near the defect. These interactions are significant
Optically detected magnetic resonance
Optically_detected_magnetic_resonance
Class of enzymes
PMID 7852397. Mo H, Dai Y, Pochapsky SS, Pochapsky TC (1999). "1H, 13C and 15N NMR assignments for a carbon monoxide generating metalloenzyme from Klebsiella
Acireductone dioxygenase (iron(II)-requiring)
Acireductone_dioxygenase_(iron(II)-requiring)
Chemical compound
properties of 5-aminoimidazole ribonucleotide (AIR). Synthesis of specifically 15N-labeled 5-aminoimidazole ribonucleoside (AIRs) derivatives". Journal of the
5-Aminoimidazole_ribotide
travel, tourism, insurance
15N
15N
15N
15N
15N
15N
15N
15N
15N
travel, tourism, insurance