ライフサイエンスコーパス: isotope

1 snails enriched with a less common Zn stable isotope.

2 re the key challenges in separation of light isotopes.

3 on represented in global databases of foliar isotopes.

4 oron nitride crystals with nearly pure boron isotopes ((10)B and (11)B) compared to those with the na

5 cords of ocean redox chemistry with nitrogen isotope ((15)N/(14)N) values from approximately 2.31-bil

6 temporal evolution of (129)I, (236)U, and Pu isotopes ((239)Pu and (240)Pu) in seawater sampled durin

7 riven by reaction stoichiometry for all rare isotopes: (33)S, (34)S, and (36)S.

8 levels, tracking the fate of a stable sulfur isotope ((34)S) from its incorporation by microalgae as

9 Here we use two enriched stable isotopes, (68)Znen and (64)Znen (>99%), to prepare (68)Z

10 ifferences in Larmor precession of the three isotopes (69)Ga, (71)Ga and (75)As.

11 s, and (2) accurately determines the percent isotope abundance of (15)N-ammonia in a cell lysate for

12 ntion time characteristics, mass defect, and isotope/adduct patterns.

13 it also highlights the usefulness of stable isotope analyses as tools in the exploration of ecologic

14 al alteration, there have not yet been any K-isotope analyses of altered oceanic crustal materials.

15 C and N stable isotope analysis (SIA) and laser-ablation ICP-MS of seal

16 ential of conducting (13)C position-specific isotope analysis of organic molecules with high precisio

17 Multielemental stable isotope analysis of persistent organic pollutants (POPs)

18 Our results suggest that stable isotope analysis of sediment PLFAs has potential for mon

19 is study illustrates the potential of a dual isotope analysis to differentiate between aerobic and an

20 The established model for interpreting isotope and enantiomer fractionation patterns showed pot

21 N2O isotope and isotopomer signatures, as well as molecular

22 Isotopes and diversification results suggest that the ev

23 MS spectra both for the naturally occurring isotopes and for the overlapping of peaks corresponding

24 Methane isotopes and hydrocarbon gas compositions indicate most

25 r standoff detection and analysis of uranium isotopes and indicate the potential of the technique for

26 Here, we use stable isotopes and NanoSIMS to show that the cyanobacterium Ma

27 urn influenced energy acquisition (data from isotopes), and growth (mark-recapture data).

28 unparalleled 11-y acoustic telemetry, stable isotope, and mark-recapture dataset to test if a populat

29 This eliminates low-intensity fragments, isotopes, and adducts and may exclude relevant low-inten

30 Sulfur isotope anomalies and marked decreases in ice core bromi

31 The dual-element C-H isotope approach (LambdaC-H = Deltadelta(2)H/Deltadelta(

32 Application of compound-specific stable isotope approaches often involves comparisons of isotope

33 rsion of erythritol to erythronate in stable isotope-assisted dried blood spot experiments.

34 he pentose-phosphate pathway (PPP) in stable isotope-assisted ex vivo blood incubation experiments an

35 Through combination of stable isotope-assisted metabolomics with functional assays, we

36 creasing with harmonic order, the unresolved isotopes at the fundamental distribution of cytochrome c

37 bles, based on previously established stable isotope bi-plot metrics.

38 distinct ocean regions to create a 'regional isotope characterization', analysed the delta(15) N valu

39 pected value of 1.022 for the carbon kinetic isotope (CKIE), k(12)/k(13).

40 mGFR was measured using plasma isotope clearance according to a technique validated in

41 Here, we use orbitally resolved, boron isotope CO2 data to show that the glacial to interglacia

42 xtended the thiol-redox proteomic technique, isotope-coded affinity tag labeling, to quantify the ext

43 roach, called SNOxICAT (S-nitrosothiol redox isotope-coded affinity tag), we found that exposure to N

44 study reports the first data on mercury (Hg) isotope composition in marine European fish, for seven d

45 The Pb isotope composition of a nuclear fallout debris particle

46 The concentration and isotope composition of alpha-HCH from the Quaternary and

47 The carbon isotope composition of calcite formed during this seismi

48 lcanic arcs and demonstrated that the carbon isotope composition of mean global volcanic gas is consi

49 Similarly, the Pb isotope composition of the particle is resolvable from t

50 95 mg kg(-1) of soluble ZnCl2 with a natural isotope composition.

51 AD, and a corresponding shift in fertilizer isotope composition.

52 Stable isotope compositions also revealed a divergence in food

53 N isotope compositions of emitted arc gases (9-11 N degree

54 No clear temporal trend in the isotope compositions of HCHs was found at the global sca

55 Here, we report new results of N isotope compositions with gas chemistry and noble gas co

56 es and come in various forms, such as stable isotopes, compound specific analyses (e.g., amino acids

57 trations (8 ngm(-3) to 302 ngm(-3)) and dual-isotope-constrained sources (19 to 73% contribution from

58 vements in instrument parameters and natural isotope correction enable more accurate measurement of m

59 ra at high resolution, we found that natural isotope correction for high-resolution labeling data req

60 on, double-spike mass spectrometry stable Pb isotope data allow clearer discrimination of historical

61 The models fit global patterns of isotope data and may explain features such as the DUPAL

62 New tungsten isotope data for modern ocean island basalts (OIB) from

63 Here we report Sm-Nd isotope data from 26 individual garnet inclusions from 2

64 redox-sensitive trace element, and nitrogen isotope data from a Neoproterozoic (Marinoan) glacial ep

65 Hg concentration and stable isotope data from an inland-to-coastal transect show hig

66 The interpretation of our nitrogen isotope data in the context of iron speciation and carbo

67 2002 and present the first comprehensive Pb isotope data set for that region.

68 Stable isotope data suggest that biogenic sources are the cause

69 in the context of iron speciation and carbon isotope data suggests biogeochemical cycling across a dy

70 als, and then combined the bone and regional isotope data to track individual animal movement pattern

71 structions and ground-truthed with new Hf-Nd isotope data, suggest that uppermost mantle at one locat

72 Here we present boron isotope data-a proxy for seawater pH-that show that the

73 and Ca, a prediction that is supported by Sr isotope data.

74 te the utility of these metrics using stable isotope data; however, the approaches are applicable to

75 Within these limits, the carbonate carbon isotope (delta(13)C) record becomes insensitive to chang

76 h a recently published benthic stable carbon isotope (delta(13)C) record from the southernmost extent

77 ured the naturally occurring stable nitrogen isotope (delta(15) N) patterns that differentiate distin

78 on along environmental gradients in foliar N isotope (delta(15)N) and C isotopic discrimination (Delt

79 nalyze a new high-resolution deep-sea oxygen isotope (delta(18)O) record from the South Atlantic Ocea

80 ed and seasonally-resolved stalagmite oxygen isotope (delta(18)O) records from Shihua Cave, North Chi

81 nitrogen amino acid (delta(15)NPhe), and Hg isotope (Delta(199)Hg, Delta(201)Hg, delta(202)Hg) data

82 elevational movements, we measured hydrogen isotope (delta(2) H) values of metabolically inert feath

83 Barium-to-calcium ratios (Ba/Ca) and carbon isotopes (delta(13)C) measured in long-lived coralline a

84 We also measured changes in stable isotopes (delta(15)N and delta(13)C) in unexposed mayfli

85 d from foraminiferal Mg/Ca and stable oxygen isotopes, delta(18)O) in combination with a recently pub

86 frared excitation between these strongly H/D isotope-dependent VA potentials then accounts for most o

87 d by detection of N2 O released and nitrogen isotope determinations of fern biomass.

88 ion (Top 3) and absolute quantification with isotope dilution (ID).

89 ith (13)C, D2-formaldehyde, and developed an isotope dilution analysis method to quantitate these org

90 The analysis was performed using isotope dilution gas chromatography tandem mass spectrom

91 A stable isotope dilution LC-MS/MS multi-mycotoxin method was dev

92 (4) determining the elements of interest by isotope dilution mass spectrometry.

93 The assay involves the use of the stable isotope dilution method.

94 absolute quantification was accomplished by isotope dilution with labeled AQUA peptides.

95 with the use of liquid-chromatography-stable-isotope dilution-multiple-reaction monitoring-mass spect

96 mples were analyzed using gas chromatography isotope-dilution high-resolution mass spectrometry.

97 ent and certification process included three isotope-dilution mass spectrometry approaches, with meas

98 Alaska to examine long-term trends in carbon isotope discrimination and growth of black and white spr

99 hniques, including leaf gas exchange, stable isotope discrimination, and eddy covariance.

100 tion, this dimer surprisingly yields bimodal isotope distributions for the majority of peptides, demo

101 spectro-electrochemistry and site-selective isotope editing to monitor the CO/CN(-) stretching vibra

102 Compound-specific isotope effect ((13)C/(12)C, (37)Cl/(35)Cl) analysis off

103 t (KIE), commitment factor (Cf), and binding isotope effect (BIE) measurements combined with quantum

104 The measurement of a deuterium equilibrium isotope effect (EIE) for the aryl CH...Cl(-) interaction

105 empt to generate a rare inverse heavy-enzyme isotope effect (kchemlight/kchemheavy < 1.0).

106 A large kinetic isotope effect (kH/kD = 20) suggests proton coupled elec

107 elow approximately 10 K, and a large kinetic isotope effect (KIE) is observed upon substituting the t

108 We used kinetic isotope effect (KIE), commitment factor (Cf), and bindin

109 Deuteration at C-3 produced a strong kinetic isotope effect for 3-hydroxylation but not 4-hydroxylati

110 ce of the kinetics, and from a D2/H2 kinetic isotope effect of 1.2(+/-0.3).

111 The corresponding kinetic isotope effect of approximately 10 is attributed primari

112 eration of proton migration (inverse primary isotope effect), whereas deuteration of the methyl group

113 a different peptide matrix, changes the net isotope effect, but the proton inventory plot remains li

114 roton transfer shows a prominent H/D kinetic isotope effect, which is determined to be 8.3 x 10(8) s(

115 the methyl group induces a normal secondary isotope effect.

116 ration into biomolecules and minimal kinetic isotope effect.

117 Carbon and chlorine apparent kinetic isotope effects (AKIEs) were in general agreement with e

118 extended to the associated secondary kinetic isotope effects (KIEs), indicating very similar transiti

119 Determined isotope effects and detected products suggest that the d

120 Isotope effects confirm that either allenic or propargyl

121 enrichments, with focus on mass-independent isotope effects due to symmetry, ignoring smaller mass-d

122 Isotope effects in the decarboxylation of benzoylacetic

123 Kinetic isotope effects indicated that the C-H bond cleavage ste

124 Kinetic isotope effects of 1.5-2.3 (on kcat/Km ) were observed w

125 od is also applicable to measuring secondary isotope effects on acidity, and we could demonstrate tha

126 hment of (15)N in NDMA was indicative of the isotope effects pertinent to bond-cleavage and bond-form

127 Mechanistic studies especially using kinetic isotope effects show that cleavage by oxidative addition

128 and the absence of deuterium solvent kinetic isotope effects suggested stepwise mechanisms with thiol

129 Greater chlorine isotope effects were observed in CHCl3 (epsilonC = -7.7

130 eavy enzymes demonstrate normal heavy-enzyme isotope effects, and F159Y PNP is a rare example of an i

131 Product analysis, kinetic isotope effects, stereochemical labeling, radical clock,

132 he isotopic abundance of the employed stable isotope (either (2)H or (13)C) within a specified list o

133 adjacent layers revealed the specificity of isotope engineering in a layered material, with a modifi

134 We study the isotope engineering of lamellar compounds by synthesizin

135 yze the fate of individual atoms from stable isotope-enriched precursors to products to deduce metabo

136 ope approaches often involves comparisons of isotope enrichment factors (epsilon).

137 l T1), and was found accompanied by a carbon isotope enrichment of 5 per thousand and 2.9 per thousan

138 iciently at temperatures above 80 K, when an isotope exchange allows the preferential adsorption of h

139 gen bond geometry upon hydrogen-to-deuterium isotope exchange is obtained from a comparison of experi

140 ence of the dihydrogen complexes, as well as isotope exchange reactions, provide evidence for propose

141 photosynthesis and respiration, hydrospheric isotope exchange with water, and stratospheric photochem

142 tinued until the end of the Lomagundi carbon isotope excursion ca. 2,060 Ma.

143 foraminifera measurements of the PETM carbon isotope excursion from Maud Rise have been interpreted a

144 een proposed to account for this anomalous C-isotope excursion.

145 Radical clock and kinetic isotope experiments support a mechanism in which the C-S

146 The multielemental stable isotope fingerprints facilitate the source identificatio

147 ratios were not consistent with the expected isotope fingerprints of CCRs, but rather mimic the compo

148 o acid-coded mass tagging (AACT) with stable isotopes followed by tandem mass spectrometry sequencing

149 us isotopologues ensuing from stable natural isotopes for constituent elements.

150 strates, with the two most commonly employed isotopes for metabolism being (2)H and (13)C.

151 ta (13)Cbulk) and nitrogen (delta (15)Nbulk) isotopes for nine bat species from different feeding gui

152 At present, the most successful groups of isotopes for this purpose are (123)I/(124)I/(131)I, (68)

153 es (measuring atmospheric mole fractions and isotopes) for constraining these geological emissions ha

154 iron bonds, we calculate an equilibrium iron isotope fractionation between silicate and iron under co

155 udy investigates for the first time hydrogen isotope fractionation during both aerobic and anaerobic

156 ngal cell is not associated with a unique Mg isotope fractionation factor.

157 for the first time both carbon and chlorine isotope fractionation for three different engineered rea

158 itions, suggesting that the observed C and N isotope fractionation in NDMA may be diagnostic for NDMA

159 To experimentally confirm isotope fractionation in thiomolybdates, a new approach

160 y reaction and understanding the controls of isotope fractionation is central to such studies.

161 ellular solution pH, the pH-dependence on Mg isotope fractionation is thus due to differences in fung

162 Even though multi-element isotope fractionation patterns provide crucial informati

163 and (15)N/(14)N ratios of NDMA give rise to isotope fractionation trends that can be used to infer N

164 retations regarding the processes underlying isotope fractionation.

165 titative constraints exist on the associated isotope fractionations.

166 Here we report the capture of heavy hydrogen isotopes from hydrogen gas by selective adsorption at Cu

167 We measured Hg, major ions, and stable water isotopes from the snowpack through the entire spring mel

168 Feather isotopes from these birds are consistent with the altern

169 iled a global data set for carbon and helium isotopes from volcanic arcs and demonstrated that the ca

170 evidence of Fukushima-derived (236)U and Pu isotopes has been found in this study, although further

171 Using such isotopes, here we show that Cl, Br and I abundances in c

172 esults have important implications for water isotope heterogeneity in plants and for our understandin

173 ngus Knufia petricola fractionates stable Mg isotopes in a time- and pH-dependent manner.

174 Boron isotopes in dust differ from dissolved inputs, with an a

175 A wider use of chlorine isotopes in environmental studies is still inhibited by

176 Strontium and neodymium isotopes in modern dust show that Asian sources contribu

177 ts the first national-scale survey of Stable Isotopes in Tap Water (SITW) across China.

178 Stable isotopes in tree rings are increasingly used as proxies

179 Iron absorption was assessed by isotope incorporation in erythrocytes 14 d after the tes

180 hese lipoproteins was studied using a stable isotope infusion of D3-leucine, gas chromatography/mass

181 equilibration of tracer isotopes with sample isotopes is not possible prior to beginning chemical sam

182 Stable isotope kinetics revealed that in non-failing human hear

183 0000 allowed us to separate different stable isotope labeled analogues across a large range of metabo

184 Degradation tests with radio or stable isotope labeled compounds enable the detection of the fo

185 th multiple ionization techniques and stable isotope labeled derivatization methods.

186 receipts containing relevant levels of BPA (isotope-labeled BPA-d16) for 5 min, followed by hand-was

187 ectrometry, and phosphopeptide enrichment of isotope-labeled peptides, we examined the dynamic of the

188 umptive screen-positive cases without stable isotope-labeled reagents.

189 a method based on high-performance chemical isotope labeling (CIL) nanoflow liquid chromatography ma

190 Stable isotope labeling (SIL) techniques have the potential to

191 We have used isotope labeling and two-dimensional infrared spectrosco

192 Stable isotope labeling by amino acids in cell culture, using p

193 measured in vivo using a pulse-chase stable isotope labeling experiment.

194 lubility and ionization, and utilizes stable isotope labeling for MS1 level identification of hydroph

195 y blue-native gel electrophoresis and stable isotope labeling in cell culture proteomics that the TbS

196 Our study shows that (15)N and (18)O isotope labeling is a useful approach for direct quantif

197 Here, we used a stable isotope labeling technique ((18)O and (2)H) to determine

198 were analyzed by ESI/qTOF/MS using MS/MS and isotope labeling techniques.

199 gh sensitivity, we developed cysteine-stable isotope labeling using amino acids in cell culture (SILA

200 affinity purification), coupled with stable isotope labeling with amino acids in cell culture (SILAC

201 Stable isotope labeling with multiple reaction monitoring-mass

202 Using a combination of MS, isotope labeling, and (1)H and (13)C NMR techniques, we

203 ially useful in rapid carboxylic acid carbon isotope labeling, however development toward its applica

204 of the aforementioned structures with (13)C-isotope labeling.

205 trometery (GC-MS) together with (13)C stable isotope-labelled glucose and glutamine as metabolic trac

206 lative change in C (C/N) based on short-term isotope-labelled mineral fertilizer additions should be

207 Here, using in situ (18)O isotope labelling mass spectrometry, we provide direct e

208 rane phospholipid incorporation using stable isotope labelling with deuterated precursors followed by

209 Here we show that the carbon isotope mass balance is also significantly affected by t

210 ss carbon fluxes affect the long-term carbon isotope mass balance, and may lead to reassessment of th

211 Nitrate isotope measurements provide a new constraint on the con

212 g approach of synchronizing continuous water isotope measurements to a nearby tree-ring chronology.

213 rldwide dataset of >3,500 leaf stable carbon isotope measurements.

214 G6pc(-/-) mice using state-of-the-art stable isotope methodologies.

215 Throughout the section, a striking DFe isotope minimum (light iron) is observed at intermediate

216 eloping a multi-trophic level Bayesian three-isotope mixing model.

217 northwestern Nevada using (13) C and (15) N isotopes obtained from "Modern" (2008-2013 CE), "Histori

218 e has been obtained previously, using stable isotope of labeled amino acids in mammals (SILAM).

219 Mass channels corresponding to the isotopes of a single element were merged to improve the

220 This demonstrated that nitrate isotopes of delta(15)NNO3 and delta(18)ONO3 do not fract

221 We conducted measurements of nitrogen isotopes of individual amino acids (delta (15)NAA) and b

222 We find that isotopes of lithium, under similar thermal paths, exhibi

223 Nitrogenous concentrations and dual isotopes of nitrate were measured to ascertain the spati

224 ) (m/z 200) baseline resolved peaks of (13)C isotopes of unlabeled and monoisotopic peaks of (15)N la

225 SINA) on the Rosetta spacecraft analyzed the isotopes of xenon in the coma of comet 67P/Churyumov-Ger

226 adducts in MS1 spectra via the stable heavy isotope pair.

227 combination of (29)N2 and (30)N2 production (isotope pairing), denitrification potential measurements

228 ed compounds based on combining a simplified isotope pattern and mass defect cluster analysis was dev

229 lorine (Deltadelta(13)C vs Deltadelta(37)Cl) isotope patterns for oxidation by thermally activated pe

230 d based on distinct spacing between adjacent isotope peaks, and the addition of metal cations and lig

231 Summed multiple charge states and multiple isotopes per charge state of the analyte were used durin

232 eaf hydraulics, gas exchange, water use, and isotope physiology.

233 sus Deltadelta(37)Cl versus Deltadelta(13)C) isotope plot, which opens further possibilities for path

234 In this proof-of-concept study, stable isotope probing (SIP) was used to identify microorganism

235 be two new complementary approaches - stable isotope probing coupled with nanoscale secondary ion mas

236 ation of the van der Waals interactions upon isotope purification.

237 ple, sensitive, and robust method for sulfur isotope ratio ((34)S/(32)S) analysis of ppm-level organi

238 The delta(18)O isotope ratio increased with D and decreased with MC.

239 verall discrimination potential of strontium isotope ratio is evidenced in the final statistical disc

240 en in the past for these measurements, i.e., isotope ratio mass spectrometry (IRMS), with very encour

241 13)C-enriched CO2 samples, a newly developed isotope ratio mid-infrared spectrometer was introduced w

242 y (irm-(13)C NMR) was mainly used to measure isotope ratio monitoring with the potential of conductin

243 ology for the determination of stable carbon isotope ratio was evaluated in comparison with the metho

244 This work aims to employ an (18)O-isotope ratio-based analytical method for quantitative e

245 set of carbon, hydrogen, and chlorine stable isotope ratios (delta(13)C, delta(2)H, delta(37)Cl) of i

246 uous tooth enamel as marked variations in Ca isotope ratios (delta(44/42)Ca).

247 delta(2)H and Deltadelta(13)C are changes in isotope ratios during degradation) resulted in clearly d

248 The carbon, nitrogen and sulphur isotope ratios of feed and fillet were highly positively

249 Stable isotope ratios of HCHs cover the ranges from -233 per th

250 ybdates, a new approach for determination of isotope ratios of individual thiomolybdate species was d

251 horus to nitrogen, and carbon ratios, oxygen isotope ratios of phosphate in vegetation, and phosphata

252 uation, which relates the change in measured isotope ratios to the decreasing substrate fractions and

253 and Sr ((87)Sr/(86)Sr = 0.70923 +/- 0.00024) isotope ratios were not consistent with the expected iso

254 lybdates, collecting each peak and analyzing isotope ratios with multicollector inductively coupled p

255 f every Greenland interstadial identified in isotope records with specific soil horizons.

256 is suggested by available speleothem oxygen isotope records.

257 which sets up a benchmark for further stable isotopes research across China.

258 Stable isotope-resolved metabolomics (SIRM) is an approach that

259 A decaying isotope scan was obtained over 5 half-lives on 9 differe

260 Isotope scrambling shows that intramolecular rearrangeme

261 he spatial variation of ammonium and nitrate isotopes show that nitrification is a key process govern

262 fatty acids (PLFAs) and their carbon stable isotope signatures.

263 Virginia and North Carolina dated to Marine Isotope Stage (MIS) 3, from 50 to 35 ka, are surprisingl

264 ic measurements of modern and palaeo (Marine Isotope Stage (MIS) 5e) tidal notches on Bonaire (southe

265 g the sea level lowstand accompanying marine isotope stage 6, rejecting earlier records of bison in N

266 ay procedure involved addition of the stable isotope standards [(15)N5]dG-gx-dC and [(15)N5]dG-gx-dA

267 Our study demonstrates that quartz isotope stratigraphy can resolve magmatic events that ma

268 Credible future tree ring isotope studies require explicit accounting for species-

269 ay remain undetected by whole-rock or zircon isotope studies, and that assimilation of altered roof m

270 Tracing stable isotopes, such as (13)C using various mass spectrometry

271 ell is localization of organelle proteins by isotope tagging (LOPIT), which combines biochemical cell

272 These REE minerals show higher initial Nd isotope than primary REE-rich minerals (varepsilonNd(t)=

273 to eject material rich in heavy radioactive isotopes that can power an electromagnetic signal.

274 HRMS data stems partly from the presence of isotopes that give rise to more peaks to interpret compa

275 ing mass-independent fractionation of sulfur isotopes that took place in the Archean atmosphere of Ea

276 The interest of using Hg sable isotopes to investigate the whole European Hg cycle is c

277 lishing a more robust framework for using Cr isotopes to track the evolution of the Earth's atmospher

278 bolites will have incorporated the labelling isotope, to a degree that depends on the metabolic turno

279 Positional stable isotope tracer analysis reveals carbon routes during amm

280 Stable-isotope tracer experiments combined with nuclear magneti

281 owpacks and melted snow using mercury stable isotope tracer experiments, as well as quantifying conce

282 Metabolomics and isotope tracer studies demonstrate effective cellular ta

283 interest has developed in alternative stable isotope tracer techniques that overcome these limitation

284 er the curve value was measured using stable isotope tracers and gas chromatography/mass spectrometry

285 The application of substrate-specific stable isotope tracers has permitted exquisite insight into ami

286 e limitations to 'substrate-specific' stable isotope tracers, which limit physiological insight, e.g.

287 (15)N isotope tracing is an effective and direct approach to i

288 of (15)N-ammonia in a cell lysate for (15)N-isotope tracing studies.

289 By combining isotope-tracing and genetic experiments, we have demonst

290 We present an integrated zircon isotope (U-Pb, Lu-Hf, O) and trace element dataset from

291 ions from trees had an average stable carbon isotope value (delta(13)C) of -66.2 +/- 6.4 per mil, con

292 le Ruens and Feedlot had the lowest nitrogen isotope values (P</=0.05).

293 during winter - inferred from feather stable isotope values - induces residual effects that carry ove

294 the calculated aragonite equilibrium oxygen isotope values implies shallow calcification depths for

295 Fatty acid and bulk stable carbon isotope values of cave-adapted shrimp suggest that carbo

296 Nitrate recovery and isotope values were independent of equilibrium time and

297 method to recover both the tracer and sample isotopes when full equilibration of tracer isotopes with

298 r satellites for nuclear [Formula: see text] isotopes, whereas NMR of the "bulk" lattice is nominally

299 e isotopes when full equilibration of tracer isotopes with sample isotopes is not possible prior to b

300 ucts have no equivalent in the corresponding isotope world with ca. 43 new species in the D world and