ライフサイエンスコーパス: carbon isotope

1 vidual and their diet) total carbon (TC) and carbon isotope (13)C (delta(13)C) and (14)C (F(m)) were

2 The stable carbon isotope (13)C is used as a universal tracer in pl

3 a were positively correlated to the ratio of carbon isotopes ((13)C/(12)C), indicating positive corre

4 olution electron backscatter diffraction and carbon isotope analyses (as delta(13) C).

5 Compound-specific carbon isotope analyses also have been used here to char

6 Geochemical biomarkers and stable carbon isotope analyses fingerprint the presence of oils

7 and delta(15)N values) and compound-specific carbon isotope analyses of individual fatty acids (delta

8 We combine both organic and calcite carbon isotope analyses of individual specimens of these

9 ed the use of compound-specific chlorine and carbon isotope analysis (Cl- and C-CSIA) to assess CP bi

10 to continuous flow compound-specific stable carbon isotope analysis mass spectrometry for concentrat

11 On the basis of the carbon isotope analysis of 42 natural caffeine samples i

12 surements of human bone collagen, and stable carbon isotope analysis of human enamel bioapatite, from

13 tio mass spectrometer (LC-IRMS) in 2004, yet carbon isotope analysis of unpolar and moderately polar

14 by aerobic acetic acid bacteria and, lacking carbon isotope analysis, are more generally used as indi

15 ethane seep communities, in conjunction with carbon isotope analysis, has led to their use as biomark

16 ous spatial and temporal scales using stable carbon isotope analysis, leaf gas exchange and eddy cova

17 add support to the deductions made from the carbon isotope analysis.

18 iew outlines for the first time the expected carbon isotope and noble gas compositions of captured CO

19 sely dated high-resolution speleothem oxygen-carbon isotope and trace element records of Central Asia

20 ariability at both cave sites, inferred from carbon isotope and trace element records, shows climate

21 combine measurements of radiocarbon, stable carbon isotopes and element ratios to correct for rock-d

22 y) climatic fluctuations reflected in stable carbon isotopes and sedimentary facies in lacustrine str

23 New palynological, wildfire, organic carbon isotope, and atmospheric pCO2 data from early din

24 e large-amplitude (over 10 per mil) negative carbon isotope anomalies, and use these data in a new qu

25 Here we present the first dual-carbon isotope-based (Delta(14)C and delta(13)C) source

26 cretion-differentiation history but also for carbon isotope biosignatures for early life on the Earth

27 n temperature and degree of fractionation of carbon isotopes by phytoplankton at temperatures below a

28 The stable carbon isotope composition (delta(13) C) of the leaf has

29 plants, theoretical models suggest that leaf carbon isotope composition (delta(13) C), when the effic

30 The analysis of tree-ring carbon isotope composition (delta(13)C) has been widely

31 rs, and the positive correlation between the carbon isotope composition and oxygen content of modern

32 area (LMA), leaf nitrogen (N) concentration, carbon isotope composition in leaves (delta(13) C), stem

33 Moreover, stable carbon isotope composition indicated that crystals are o

34 The carbon isotope composition of calcite formed during this

35 ntiomeric fractions (EFs), compound-specific carbon isotope composition of DDT and its metabolites, a

36 (-9.8 +/- 2.5 per mille), and to measure the carbon isotope composition of ethanol in wet deposition

37 d by calculating the stand-level increase in carbon isotope composition of late wood from a wet to a

38 from volcanic arcs and demonstrated that the carbon isotope composition of mean global volcanic gas i

39 etermine peat accumulation rates) and stable carbon isotope composition of moss cellulose (to estimat

40 on when analysing large-scale changes in the carbon isotope composition of terrestrial substrates.

41 Examining stable carbon isotope composition of tree rings in addition to

42 (13)C-depleted carbonate carbon isotope compositions and low clumped isotope-deri

43 These morphospecies-correlated carbon isotope compositions confirm the biogenicity of t

44 rom the observed spread toward more negative carbon isotope compositions in Neoproterozoic (1.0-0.542

45 Here we apply hydrogen and carbon isotope compositions of plant wax lipids in two l

46 The carbon isotope compositions were compared to the source

47 f environmental proxies such as bulk organic carbon isotope compositions, Hg concentration, and Hg/TO

48 ork for ecological interpretations of stable carbon-isotope compositions (expressed as delta(13)C val

49 Here, we present dual carbon isotope constrained (Delta(14)C and delta(13)C) s

50 can be compared with contemporaneous global carbon isotope curves.

51 These genes are highly expressed and methane carbon isotope data are consistent with hydrogenotrophic

52 The organic carbon isotope data combined with measurements of oxygen

53 orthern boreal forest, we compiled published carbon isotope data from 14 high-latitude sites within E

54 We present carbon isotope data from 452 fossil teeth that record di

55 In contrast, carbon isotope data from cercopithecids indicate that C4

56 Here we use helium and carbon isotope data from deeply sourced springs along tw

57 Here we use carbon isotope data from early to mid Pliocene hominin a

58 We find that carbonate and organic carbon isotope data from Mongolia and Canada are tightly

59 Here, we present carbon isotope data from more than 1,050 fossil teeth th

60 carbon storage using radiocarbon and stable carbon isotope data from the Brazil and Iberian Margins.

61 Carbon isotope data show that Australopithecus bahrelgha

62 e data in the context of iron speciation and carbon isotope data suggests biogeochemical cycling acro

63 -ray fluorescence elemental geochemistry and carbon isotope datasets obtained from the Steinbruch Sch

64 Precursor and product carbon isotope delta values consistently fit a linear re

65 nt a new, annually resolved record of stable carbon isotope (delta(13) C) data determined from Larix

66 e synthesized 30 years of data on the stable carbon isotope (delta(13) C) signatures in dissolved ino

67 cident with the MCO is the Monterey positive carbon isotope (delta(13)C) excursion, with oceans more

68 Here, we present the carbon isotope (delta(13)C) megasplice, documenting deep

69 Within these limits, the carbonate carbon isotope (delta(13)C) record becomes insensitive t

70 ed +2 per thousand increase in the carbonate carbon isotope (delta(13)C) record by approximately 445

71 ion with a recently published benthic stable carbon isotope (delta(13)C) record from the southernmost

72 s study analyzed the potential of the stable carbon isotope (delta(13)C) value as a structural microc

73 d in Canadian supermarkets were analyzed for carbon isotope (delta(13)C) values, adding to the record

74 Soil carbonate carbon isotope (delta(13)C), oxygen isotope (delta(18)O)

75 This study used carbon isotope (delta(13)C)-based calculations to quanti

76 larly Delta(199)Hg: 0.96-1.13 per mille) and carbon isotope (delta(13)C: -20.6 to -19.4 per mille) ra

77 Here we develop a high-resolution carbonate carbon isotope (delta(13)Ccarb) record for 3.20 million

78 Although reef coral skeletal carbon isotopes (delta(13)C) are routinely measured, int

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

80 Here, we use compound-specific stable carbon isotopes (delta(13)C) to reveal that DBC in the o

81 t most of the geochemical evidence relies on carbon isotopes (delta(13)C).

82 ,000 to 55,000 years ago based on oxygen and carbon isotopes determined by ion microprobe and uranium

83 quid chromatography (LC) based on postcolumn carbon isotope dilution mass spectrometry (IDMS) was dev

84 erties, affinity for CO(2) uptake (K(0.5) ), carbon isotope discrimination (delta(13) C) and pyrenoid

85 g trees had greater sensitivity of tree-ring carbon isotope discrimination (Delta(13) C) to drought c

86 Tree-ring carbon isotope discrimination (Delta(13)C) and oxygen is

87 al mechanisms underlying variation in stable carbon isotope discrimination (Delta(13)C) are largely u

88 Carbon isotope discrimination (Delta(13)C) in cellulose

89 Leaf hydraulic conductance (K(Leaf)), carbon isotope discrimination (Delta(13)C), leaf mass pe

90 Carbon isotope discrimination (Delta) for untreated poll

91 enzyme activity, gas exchange, and real-time carbon isotope discrimination (Delta).

92 f 14 SNPs were associated with the traits of carbon isotope discrimination (n = 7), height (n = 1) an

93 ch as an AP2 transcription factor related to carbon isotope discrimination and glutamate decarboxylas

94 terior Alaska to examine long-term trends in carbon isotope discrimination and growth of black and wh

95 af water-use efficiency (WUE) as measured by carbon isotope discrimination and increased plot-level L

96 a comprehensive study of the distribution of carbon isotope discrimination and values among different

97 Wi was estimated from carbon isotope discrimination in archived herbage sample

98 We tested the climate drivers of carbon isotope discrimination in modern and historical p

99 ferences were found in cuticle thickness and carbon isotope discrimination in near-isogenic lines dif

100 Carbon isotope discrimination in plant leaves (Deltaleaf

101 Plant carbon isotope discrimination is complex, and could be d

102 We used carbon isotope discrimination to show that TE is increas

103 ritical determinant of growth rate, and high carbon isotope discrimination values reflecting optimal

104 Leaf gas-exchange parameters and carbon isotope discrimination were analysed in relation

105 oxygen/chlorophyll fluorescence method), and carbon isotope discrimination were measured on plants un

106 nductance as well as with a long-term proxy (carbon isotope discrimination) for gas exchange, suggest

107 for association with phenotypic variation in carbon isotope discrimination, foliar nitrogen concentra

108 levels were associated with changes in leaf carbon isotope discrimination, indicating altered water

109 ding morphological traits (height, diameter, carbon isotope discrimination, pitch canker resistance),

110 study, CO(2) in the atmosphere) do not drive carbon isotope discrimination.

111 nd improved water use efficiency measured as carbon isotope discrimination.

112 n rising [CO(2) ] over Industrialization and carbon isotope discrimination.

113 The carbon isotope distribution within sugars has been shown

114 Here, we present a model for understanding carbon isotope distributions within the deep Earth, invo

115 st hydroclimate because the fractionation of carbon isotopes during photosynthesis is strongly influe

116 igh frequency, large amplitude variations in carbon isotopes during the 8.2 ka event, coupled with pu

117 For methane formation, a carbon isotope effect ((12)CH3-S-CoM/(13)CH3-S-CoM) of 1

118 n up to +5.1 per thousand) along with normal carbon isotope effect (epsilonreactive position of -12.6

119 r carbon (AKIE) in order to characterize the carbon isotope effect at the reactive positions for the

120 The carbon isotope effect on the alpha-pyrrole carbon and th

121 sotope fractionation, without any detectable carbon isotope effect, that was observed for 3-bromophen

122 rm TCM to dichloromethane, with inconsistent carbon isotope effects (epsilon(13)C(UNSWDHB) = -4.3 +/-

123 wise, degradation consistently showed normal carbon isotope effects (epsiloncarbon=-5.0 per thousand+

124 Experimental evidence, including carbon isotope effects measured by (13)C NMR, were indic

125 In contrast to the expected larger primary carbon isotope effects relative to chlorine for C-Cl bon

126 r, biotic transformations resulted in weaker carbon isotope effects than respective abiotic transform

127 Significant carbon isotope effects were observed for nucleophilic su

128 The carbon isotope enrichment factor (epsilon) measured duri

129 Carbon isotope enrichment factors (epsilon(c)) for gamma

130 The average carbon isotope enrichment factors (epsilon(c)) of (+)alp

131 Carbon isotope enrichment factors for SMX (epsilon(C)) w

132 Carbon isotope enrichment factors obtained from an optim

133 on at microbial membranes was observed, with carbon isotope enrichment factors of -2.2 per thousand,

134 Here, biotransformation-associated carbon isotope enrichment factors, epsilon(C,bulk) for C

135 15 (well T1), and was found accompanied by a carbon isotope enrichment of 5 per thousand and 2.9 per

136 esitylene, and anisole, and determined their carbon isotope enrichments factors (epsilon(C)) for reac

137 the mechanisms behind Earth's most dramatic carbon isotope event, we obtained coupled stable isotope

138 This finding not only negates carbon isotope evidence for methane release during Marin

139 copper-catalyzed procedure enabling dynamic carbon isotope exchange is described.

140 Eocene thermal maximum (PETM) and associated carbon isotope excursion (CIE) are often touted as the b

141 n years ago) is marked by an abrupt negative carbon isotope excursion (CIE) that coincides with an ox

142 cted in sedimentary components as a negative carbon isotope excursion (CIE).

143 e rise contemporaneous with a large negative carbon isotope excursion (CIE).

144 g the globally recognized Steptoean Positive Carbon Isotope Excursion (SPICE) that indicates a major

145 cursion in phase with the Steptoean Positive Carbon Isotope Excursion (SPICE), a large and rapid excu

146 ,384-3,342 p.p.m.v. during the height of the carbon isotope excursion across all sources postulated f

147 planktonic archaea reliably record both the carbon isotope excursion and surface ocean warming durin

148 extraterrestrial impact occurred during the carbon isotope excursion at the P-E boundary.

149 When applied to the carbon isotope excursion at the Palaeocene-Eocene bounda

150 and continued until the end of the Lomagundi carbon isotope excursion ca. 2,060 Ma.

151 Yet, discrepancies in carbon isotope excursion estimates from different sample

152 -foraminifera measurements of the associated carbon isotope excursion from Maud Rise (South Atlantic

153 Single-foraminifera measurements of the PETM carbon isotope excursion from Maud Rise have been interp

154 rom the Paleocene-Eocene thermal maximum and carbon isotope excursion in cored sections at Ancora and

155 osition of crenarchaeol constrain the global carbon isotope excursion magnitude to -4.0 +/- 0.4 per m

156 Concomitant with the carbon isotope excursion marking the PETM we document a

157 A negative carbon isotope excursion recorded in terrestrial and mar

158 or the greatly enhanced magnetization of the carbon isotope excursion sediment but whose origin is th

159 characteristically record a larger-amplitude carbon isotope excursion than marine substrates for a si

160 Toward the end of the carbon isotope excursion there is an increase in the del

161 e largest of these perturbations, the Shuram carbon isotope excursion, has been invoked as a driving

162 n by the comings and goings of the Lomagundi carbon isotope excursion, the longest-lived positive del

163 kground and maximum pCO(2) levels across the carbon isotope excursion.

164 enation in the waning stages of the positive carbon isotope excursion.

165 Negative carbon isotope excursions (CIEs) recorded in marine and

166 ep for testing hypotheses related to extreme carbon isotope excursions and their role in the evolutio

167 Negative carbon isotope excursions measured in marine and terrest

168 read marine organic-carbon burial and coeval carbon-isotope excursions.

169 Our data show that net carbon isotope fractionation (Delta(13) C), decreased by

170 sm by strain NaphS6 was linked to negligible carbon isotope fractionation (epsilonC = -0.2 +/- 0.2 pe

171 ne dioxygenases was associated with moderate carbon isotope fractionation (epsilonC = -0.8 +/- 0.1 pe

172 chlorination was associated with significant carbon isotope fractionation (epsilonC = -2.0 per thousa

173 Here, we investigated the carbon isotope fractionation associated with the oxidati

174 Here, carbon isotope fractionation by Dehalococcoides mccartyi

175 y accounting for the fundamental increase in carbon isotope fractionation by land plants in response

176 This absence of measurable carbon isotope fractionation considerably facilitates th

177 ve of this study is to quantify chlorine and carbon isotope fractionation during NAPL-vapor equilibra

178 Our data indicate constant carbon isotope fractionation for acetate formation at di

179 This study demonstrates that carbon isotope fractionation is a valuable approach for

180 aporization in a sand column, no significant carbon isotope fractionation is observed (epsilon(C) = +

181 mation in groundwater at a field site, where carbon isotope fractionation of CFC-11 suggests naturall

182 extent and range of isomer and enantiomeric carbon isotope fractionation of HCHs with Sphingobium sp

183 bacteria we measured (a) enantiomer-specific carbon isotope fractionation of MCPP ((R,S)-2-(4-chloro-

184 Carbon isotope fractionation of sulfamethoxazole (SMX) d

185 llular microscale mass transfer on microbial carbon isotope fractionation of tetrachloroethene (PCE)

186 In this work, carbon isotope fractionation of the three dichlorobenzen

187 ctively; Fenton-like degradation resulted in carbon isotope fractionation only, leading to LambdaC/Br

188 ms through a combination of enantiomeric and carbon isotope fractionation to characterize the degrada

189 While carbon isotope fractionation was generally small, observ

190 Carbon isotope fractionation was investigated for the bi

191 on = -1.3 per thousand to -2.0 per thousand) carbon isotope fractionation was observed.

192 seems, therefore, a stronger indicator than carbon isotope fractionation.

193 nt, and cofactor-limiting conditions, stable carbon isotope fractionations remain consistent for give

194 d the global history of [CH4] and its stable carbon isotopes from ice cores, archived air, and a glob

195 We generated temporal records of plant carbon isotopes from museum specimens collected over a c

196 The collapse of sea surface to sea floor carbon isotope gradients has been interpreted as reflect

197 To solve this issue, we measured carbon isotopes in both carbonate and organic matter as

198 sulfur isotopes in sulfate (delta(34)SSO4), carbon isotopes in dissolved inorganic carbon (delta(13)

199 Stable carbon isotopes in fossil tooth enamel are used to estim

200 We added measurements of carbon isotopes in respired CO(2) to constrain the age o

201 al ecosystems can be quantified using stable carbon isotopes in soils.

202 water-use efficiency (W i ), estimated using carbon isotopes in tree rings, suggesting trees are gain

203 Here we use compiled data for abundances of carbon isotopes in tree stems to show that on decadal sc

204 Carbon isotopes indicate multiple carbon sources in the

205 in the results of lipid biomarker and stable carbon isotope investigations of tissues, bandaging, and

206 ntidiabetic drug, sitagliptin, with a single carbon isotope label.

207 s especially useful in rapid carboxylic acid carbon isotope labeling, however development toward its

208 Here, we used stable carbon isotopes, leaf nitrogen content and stomatal meas

209 than traditionally determined from a global carbon isotope mass balance and may have varied over geo

210 Here we show that the carbon isotope mass balance is also significantly affect

211 is sink constitutes a minor component of the carbon isotope mass balance under the modern, high level

212 and gross carbon fluxes affect the long-term carbon isotope mass balance, and may lead to reassessmen

213 a shallow aquifer was monitored using stable carbon isotope measurements at a field site near the tow

214 tal development, we present 1.037 new stable carbon isotope measurements from 33 archaeological sites

215 Here, we use a large network of stable carbon isotope measurements in C(3) woody plants to exam

216 om a worldwide dataset of >3,500 leaf stable carbon isotope measurements.

217 The carbon isotope method (AOAC 998.12) compares the bulk ho

218 The technique is compared to an established carbon isotope method in three C3 species.

219 Stable carbon isotopes of CH4 and CO2 further indicated the pos

220 s, significant advances have been made using carbon isotopes, 'omics' analyses and surveys of respira

221 usly published field data showing a negative carbon isotope pattern (-2 per thousand) at the fringes

222 ity is sufficient to explain observed marine carbon isotope patterns at the K-Pg, due to the underlyi

223 however, the interval of peak magnitude for carbon isotopes precedes that of sulfur isotopes with an

224 The carbon isotopes preserved in the Ca-rich carbonate phase

225 Carbon isotope ratio ((13)C/(12)C=delta(13)C) of 100 pin

226 Carbon isotope ratio (CIR) confirmation is one of the mo

227 To identify these adulterations, stable carbon isotope ratio analysis (SCIRA) was performed on t

228 95; AOAC 998.12, 2005) and Internal Standard Carbon Isotope Ratio Analysis could not efficiently dete

229 o mass spectrometry (HT-LC/PDA/IRMS) for the carbon isotope ratio analysis of unconjugated steroids.

230 erage a multidecadal record of annual foliar carbon isotope ratio collections coupled with 39 y of su

231 mal dependence (<1 per thousand) of measured carbon isotope ratio on methane concentration.

232 methodology for the determination of stable carbon isotope ratio was evaluated in comparison with th

233 ectroscopy to determine the bulk (13)C/(12)C carbon isotope ratio, at natural abundance, in inorganic

234 of 20 elements, 14 carbohydrates and stable carbon isotope ratio.

235 af as a tracer of past rainfall by analysing carbon isotope ratios (delta(13) C) of modern leaves.

236 using bone and enamel apatite rely mainly on carbon isotope ratios (delta(13)C) and to a lesser exten

237 Serial carbon isotope ratios (delta(13)C) in canine enamel from

238 Ma), extended intervals of anomalously high carbon isotope ratios (delta(13)C) indicate high rates o

239 ere used as proxies for trophic position and carbon isotope ratios (delta(13)C) indicated foraging ha

240 well-established relationships between leaf carbon isotope ratios and the ratio of intracellular to

241 Wood warbler carbon isotope ratios are more depleted than typical for

242 We used soil organic carbon isotope ratios as a proxy for changes in woody ve

243 f animal-derived proteins in our diets, hair carbon isotope ratios could provide an approach for scal

244 Population mean carbon isotope ratios fluctuated predictably in response

245 ear, quantitative precipitation record using carbon isotope ratios from a single species of leaf pres

246 Carbon isotope ratios from terrestrial plant wax biomark

247 rm pulses coinciding with rapidly decreasing carbon isotope ratios may in part be the result of a rad

248 The carbon isotope ratios of milk protein and milk fat as we

249 ext we present the first method to determine carbon isotope ratios of pharmaceuticals that cannot be

250 rprinting (P-SIF) is a method to measure the carbon isotope ratios of whole proteins separated from c

251 The CSIA profiles showed large shifts of carbon isotope ratios with depth (up to 24 per thousand)

252 ed by LMA and N(area) ) and chi (from stable carbon isotope ratios) varied almost independently among

253 Carbon isotope ratios, geographical and climate data, fo

254 upled to optical and electron microscopy and carbon isotope ratios, we demonstrate that the Mn is hos

255 unlikely given the enriched nature of their carbon isotope ratios.

256 d for the determination of compound-specific carbon isotope ratios.

257 ble-isotope analysis (CSIA) of nitrogen- and carbon-isotope ratios at natural abundances as an altern

258 Large-scale surveys of carbon-isotope ratios typically show a strongly bimodal

259 e present to our knowledge the first organic carbon isotope record derived from the organic matrix in

260 We combine our pH data with a paired carbon isotope record in an Earth system model in order

261 This carbon isotope record provides a unique opportunity to e

262 The long-term, steady-state marine carbon isotope record reflects changes to the proportion

263 ), a large and rapid excursion in the marine carbon isotope record, which is thought to be indicative

264 gical evidence for this pathway based on the carbon isotope record.

265 niferal records with benthic and bulk stable carbon isotope records from the Pacific, Southeast Atlan

266 Plant wax carbon isotope records indicate a decline in C4 plants i

267 are, in large part, derived from the stable carbon isotope records of carbonate rocks and sedimentar

268 s previously put forward to explain the K-Pg carbon isotope records, and explains both spatially vari

269 ased on long-term global methane and methane carbon isotope records.

270 The Mars Phoenix spacecraft measurements of carbon isotopes [referenced to the Vienna Pee Dee belemn

271 We further report on new paired carbon isotope results from carbonate and organic matter

272 combination of several age constraints from carbon isotopes showed that warming had a similar effect

273 wball' state, it would not have left extreme carbon isotope signals in cap dolostones.

274 The intramolecular carbon isotope signature generated by online pyrolysis (

275 Significant variability in the stable carbon isotope signature indicated temporally shifting e

276 echnique which determines the intramolecular carbon isotope signature of AEOs generated by online pyr

277 is the occurrence of exceptionally depleted carbon isotope signatures (delta(13)C(PDB) down to -48 p

278 Carbon isotope signatures (delta(13)C) of SMX were measu

279 The method was applied to determine the carbon isotope signatures (delta(13)C) of vehicle ethano

280 m hydrothermal fluids and suggest that their carbon isotope signatures are a consequence of thermogen

281 Because the diamond hosts have carbon isotope signatures consistent with surface-derive

282 t allows highly resolved spatial analysis of carbon isotope signatures in solid samples down to a spa

283 The carbon isotope signatures of methane and inorganic carbo

284 he food chains they support also have unique carbon isotope signatures.

285 We use dinoflagellate cyst and stable carbon isotope stratigraphy to date the active phase of

286 ion, with direct evidence provided by stable carbon isotope studies.

287 Its secular occurrence, carbon isotope systematics and co-occurrence with other

288 Here, a ramped pyrolysis carbon isotope technique is employed to investigate ther

289 nts and, when combined with well-established carbon isotope techniques, may provide additional inform

290 Emissions from trees had an average stable carbon isotope value (delta(13)C) of -66.2 +/- 6.4 per m

291 method (AOAC 998.12) compares the bulk honey carbon isotope value with that of the extracted protein;

292 the polysulfone membrane does not alter the carbon isotope values (+/-0.5 per thousand).

293 e benzene and monochlorobenzene (MCB) stable carbon isotope values at a fine vertical resolution (3 c

294 ivore fauna shows two major change points in carbon isotope values at ~2.7 and ~2.0 Ma.

295 Enamel carbon isotope values from teeth of human-hunted gazelle

296 h-resolution Orbitrap mass spectrometry with carbon isotope values generated by online pyrolysis (del

297 Fatty acid and bulk stable carbon isotope values of cave-adapted shrimp suggest tha

298 ate comes from the measurement of oxygen and carbon isotope variations in deep-sea benthic foraminife

299 enic carbonate sink helps to explain extreme carbon isotope variations in the Proterozoic, Paleozoic,

300 * Carbon isotopes were measured on annual rings of glacial