ライフサイエンスコーパス: isotopic composition

1 inties; skins are shifted towards a lower Sr isotopic composition.

2 found that shales of all ages have a uniform isotopic composition.

3 w a clear alteration of their initial oxygen isotopic composition.

4 oduces a stoichiometric sampling in terms of isotopic composition.

5 with W metal and normalized to the nominal W isotopic composition.

6 cts sampled are characterized by a unique Hg isotopic composition.

7 atment effects on microbial biomass size and isotopic composition.

8 oon and Earth is required by their identical isotopic composition.

9 fluences on pteropod shell carbon and oxygen isotopic composition.

10 produces one or the other, depending only on isotopic composition.

11 lenged by the Moon's unexpectedly Earth-like isotopic composition.

12 s of past atmospheric GEM concentrations and isotopic composition.

13 ogeneous assortment of embryos with distinct isotopic compositions.

14 ne algae as palaeo-pH proxies based on boron isotopic compositions.

15 ite meteorites have almost indistinguishable isotopic compositions.

16 res of stars on the basis of their anomalous isotopic compositions.

17 ng silicate reservoirs with anomalous oxygen isotopic compositions.

18 Earth and Mars have broadly chondritic zinc isotopic compositions.

19 --and indirectly lipids--with characteristic isotopic compositions.

20 eservoir and the source of meteoritic oxygen isotopic compositions.

21 d similar concentrations (0.1-0.7 mug/L) and isotopic composition ((206)Pb/(207)Pb = 1.154-1.164).

22 Uranium concentrations and high precision U isotopic compositions ((238)U/(235)U) of these groundwat

23 The iron isotopic compositions (56Fe/54Fe) of late-stagemeltveins

24 A large range of Sr isotopic compositions ((87)Sr/(86)Sr between 0.70706 and

25 nown but differing delta(13)C and delta(18)O isotopic composition allows standard uncertainties of 0.

26 We use the isotopic composition and concentration of molybdenum (Mo

27 , depending on factors such as powdered coal isotopic composition and efficiency of Hg removal from f

28 ations in various solid samples with natural isotopic composition and enriched with (10)B.

29 PTB, were investigated with respect to their isotopic composition and molar mass M(Si).

30 giant-impact scenarios to explain the Moon's isotopic composition and provides a new pathway to reach

31 We have determined the isotopic composition and the carotenoid contents of 38 e

32 ork for understanding the differences in the isotopic composition and the triple isotope slopes betwe

33 zircon samples reflects the average uranium isotopic composition and variability of terrestrial zirc

34 to test analytical performance for different isotopic compositions and with quantities ranging from 1

35 een in the composition of inclusions, carbon isotopic composition, and nitrogen impurity content.

36 tion, organic matter content, organic carbon isotopic composition, and tracers of mineral matter flux

37 al saline fluids--especially their strontium isotopic compositions--and the timing of host diamond fo

38 aminant transport, degradation pathways, and isotopic composition are improving quantitative estimate

39 Pitcairn lavas contain sulfides whose sulfur isotopic compositions are affected by mass-independent f

40 Mass-independent sulfur isotopic compositions are observed.

41 d show that Vesta contains the same hydrogen isotopic composition as that of carbonaceous chondrites.

42 ing this absence of a significant shift in U isotopic composition associated with desorption-adsorpti

43 determine Hg species specific (MMHg and IHg) isotopic composition associated with methylation and dem

44 iations in (18)O and site-specific (15)N N2O isotopic composition at remote sites with a temporal res

45 labeling studies, which reveal roughly equal isotopic compositions at the allylic and distal vinylic

46 cts," that is, deviations from elemental and isotopic compositions at thermodynamic equilibrium.

47 irectly by quantifying the difference in the isotopic composition between processed and unprocessed s

48 of methods including dependencies on solvent isotopic composition, buffer concentration, and pH.

49 al bead was used for determination of the Pu isotopic composition by thermal ionization mass spectrom

50 ent Hg speciation (monomethyl-Hg) and stable isotopic composition (C, N, Hg) of 53 Alaskan ringed sea

51 ird Hg source is not discernible, and the Hg isotopic composition can be largely explained by the mix

52 Online, spectroscopic analysis of N2O isotopic composition can provide continuous measurements

53 components, were used for delineating the Pb isotopic composition corresponding to the anthropogenic

54 The isotopic composition data are collected independently in

55 urements of methane concentration and stable isotopic composition (delta(13)C(CH4)) would greatly imp

56 The carbon stable isotopic composition (delta(13)C) embedded in the methyl

57 groundwater methane (CH4) concentration and isotopic composition (delta(13)C-CH4), groundwater triti

58 The nitrogen isotopic composition (delta(15)N) of newly fixed N is cu

59 The nitrogen isotopic composition (delta(15)N) of NOx (NO + NO2) was

60 riations of atmospheric water vapour and its isotopic composition (delta(18) OV ) influence water and

61 ave developed a new method for measuring the isotopic composition (delta(18)O and deltaD) of differen

62 Greenland ice core water isotopic composition (delta(18)O) provides detailed evid

63 6 to 60.1 mug/g) sediments had a distinct Hg isotopic composition (delta(202)Hg of 0.02 +/- 0.15 per

64 As such, variations in the sulfur isotopic composition (delta(34)S) of sedimentary sulfate

65 id (pHcf); the latter was derived from boron isotopic compositions (delta(11)B) of the coral skeleton

66 Here, Cd isotopic compositions (delta(114/110)Cd) of archived fer

67 oxies such as concentration and conventional isotopic compositions (delta(13)C and delta(18)O) are no

68 This work aimed to explore the variation of isotopic compositions (delta(13)C, delta(18)O) of extra-

69 ort a shift from negative to positive copper isotopic compositions (delta(65)CuERM-AE633) in organic

70 uous negative trend is found in the nitrogen isotopic composition (delta15N) of nitrate over the indu

71 00 y based on the stable hydrogen and carbon isotopic compositions (deltaD and delta(13)C, respective

72 b, Zn, V, Ni, Cu, Cr, Co, Cd, and Hg) and Pb isotopic composition denote two main eras of pre- and po

73 alternate method for total boron as well as isotopic composition determination in boron based solid

74 This is the first case study of Sr isotopic composition determination in such ancient decid

75 ted by presence of a blank, with an apparent isotopic composition different from that of the sample.

76 contain a recycled component, their uranium isotopic compositions do not differ from those of the bu

77 hem in terms of processes known to alter the isotopic composition during transformation of the initia

78 ctively, examining hydrocarbon abundance and isotopic compositions (e.g., C2H6/CH4, delta(13)C-CH4) a

79 of the SRS environment, revealing plutonium isotopic compositions, e.g., (244)Pu, that reflect the u

80 Comparison between the isotopic composition estimated here for the industrial P

81 The Pb isotopic compositions for 51 spots of melt glass in 11 s

82 Depth profiles of Hg isotopic compositions for bottomfish (excludung C. ignob

83 Here we report Mg and O isotopic compositions for ultrahigh pressure metamorphic

84 ying degrees by improving material purity or isotopic composition, for example, or active error corre

85 Two weeks of measurements of N2O isotopic composition from Cambridge, MA, in May 2013 are

86 nalyzed for total Hg concentration (THg) and isotopic composition from streams and rivers in the vici

87 We present a reconstruction of deep-sea Fe isotopic compositions from a Pacific Fe-Mn crust spannin

88 Uniform, terrestrial-mantle-like W isotopic compositions have been reported among crystalli

89 Trinitite glass yields a large range of Pb isotopic compositions (i.e., (206)Pb/(204)Pb = 17.08-19.

90 ever, contaminant-induced variability of the isotopic composition in biota is poorly understood.

91 pths (200-1,300 m), contrasting with heavier isotopic composition in deep waters.

92 reviously been constrained only by the water isotopic composition in ice cores, without an absolute t

93 e also measured leaf gas exchange and carbon isotopic composition in L. dalmatica and the dominant na

94 to sort out all particles according to their isotopic composition in one analysis.

95 study suggests that the variability in iron isotopic composition in planetary objects cannot be due

96 curate determination of Os concentration and isotopic composition in seawater samples.

97 The average isotopic composition in studied sphalerites (delta(202)H

98 hways are likely to be influencing the final isotopic composition in the ethanol.

99 ng the 24h of the time-course experiments Hg isotopic composition in the produced MMHg becomes signif

100 d patterns of black spruce growth and carbon isotopic composition in tree rings in response to climat

101 The combined helium-, lead- and Nd-isotopic compositions in Baffin Island and West Greenlan

102 er may change not only Pb but also Sr and Nd isotopic compositions in both dissolved and suspended lo

103 resent measurements of Pb concentrations and isotopic compositions in seawater and surface sediments

104 rcury (MMHg) concentrations and mercury (Hg) isotopic compositions in sediment and aquatic organisms

105 itic classes possess mass-independent sulfur isotopic compositions in sulfide and organic phases.

106 gen (delta(18) O) and nitrogen (delta(15) N) isotopic compositions in tissue from herbarium specimens

107 ropane, and n-butane, along with the methane isotopic composition, indicate that the emitted methane

108 ethod, a more robust inventory of NOx source isotopic composition is possible, which has implications

109 The N isotopic composition is the same as that of Jupiter.

110 ow significant short-term variability in N2O isotopic composition larger than the measurement precisi

111 in food webs and might play a role in the Hg isotopic composition measured in sediments and organisms

112 Lead concentrations and isotopic compositions measured in the sediments of the h

113 The unique O-isotopic composition mechanistically describes the atmos

114 The mass independent Hg isotopic compositions (MIF; Delta(199)Hg) of the sedimen

115 of tropical orchids, we sampled leaf carbon isotopic composition of 1,103 species native to Panama a

116 bits large and enigmatic departures from the isotopic composition of abiogenic calcite, known as vita

117 que approximately 10 year record of the lead isotopic composition of airborne insoluble particulate m

118 The isotopic composition of all standards was value assigned

119 ratures without independent knowledge of the isotopic composition of ambient waters.

120 In order to characterize the stable isotopic composition of aragonitic pteropod shells and t

121 Here, we report measurements of the stable isotopic composition of atmospheric CH4 ((13)C/(12)C and

122 he goal of measuring seasonal changes in the isotopic composition of atmospheric CH4 on Earth and eve

123 The oxygen isotopic composition of atmospheric CO(2) can be used to

124 The initial isotopic composition of atmospheric Xe remains unknown,

125 eous and nondestructive determination of the isotopic composition of boron ((10)B/(11)B atom ratio) a

126 The isotopic composition of boron in natural and enriched sa

127 The isotopic composition of bulk Se and component Se pools r

128 rse" trend in the stable carbon and hydrogen isotopic composition of C1 to C4 hydrocarbons is compati

129 The isotopic composition of carbon dioxide provides a powerf

130 gh-resolution deglacial record of the stable isotopic composition of carbon in CO2(delta(13)C-CO2) in

131 cycle that are independent of changes to the isotopic composition of carbon input.

132 thousand), short-lived negative spike in the isotopic composition of carbonate carbon.

133 the MAVEN mission and further studies of the isotopic composition of carbonate in the Martian rock re

134 ass spectrometry (MS) to assess the nitrogen isotopic composition of cell material when the strains w

135 nd, the present study suggests that chlorine isotopic composition of chloroform might be used to disc

136 served in lake sediments matches closely the isotopic composition of cinnabar from the Peruvian Andes

137 The isotopic composition of CO2 (delta(13)C(spiked_sample))

138 Thus, the stable isotopic composition of CO2 can reveal much about the hi

139 imation of enzymatic activity of CA from the isotopic composition of CO2.

140 CO2) concentration, major ion concentration, isotopic composition of dissolved inorganic carbon (delt

141 Model results indicate that the isotopic composition of East Antarctic ice is less sensi

142 lection and preparation have on the measured isotopic composition of egg components.

143 Subtle variations in the isotopic composition of elements carry unique informatio

144 We present the Sr isotopic composition of enamel of the most ancient decid

145 used to define a protocol for analyzing the isotopic composition of EVOOs in order to certify their

146 ds indicates that intraannual changes in the isotopic composition of feces reflect shifts in diet.

147 esent new temperature data, derived from the isotopic composition of fossil brachiopods.

148 that Earth's temperature (estimated from the isotopic composition of fossil shells) may have been ind

149 en several measurements made of the nitrogen isotopic composition of gaseous NOx (NOx = NO + NO2) fro

150 lanetary differentiation may also modify the isotopic composition of geochemical reservoirs.

151 Isotopic composition of H2O and NO3(-) suggested that sn

152 erefore strongly influence the elemental and isotopic composition of hams.

153 ify the sources of environmental Hg, but the isotopic composition of Hg from CFL is not yet known.

154 Hg species (MeHg, inorganic Hg), and stable isotopic composition of Hg were determined at different

155 is method enables future work to utilize the isotopic composition of HONO for studying HONO chemical

156 Here we report in situ measurements of the isotopic composition of hydrogen dissolved in primitive

157 omass, microbial community structure and the isotopic composition of individual microbial membrane [p

158 omega-(o-alkylphenyl)alkanoic acids, and the isotopic composition of individual n-alkanoic acids clea

159 o-climatic factors may affect the amount and isotopic composition of iron entering the ocean.

160 most significant large-scale drivers for the isotopic composition of Italian EVOOs.

161 If a change in the isotopic composition of marine dissolved inorganic carbo

162 ternative controls on the sedimentary sulfur isotopic composition of marine pyrite by examining a 300

163 The isotopic composition of meteoric water and the dietary a

164 data reveal evidence for a shift to lighter isotopic composition of meteoric waters in glacial times

165 prime tool to characterize the molecular and isotopic composition of microbial cells.

166 Understanding the controls of the Hg stable isotopic composition of microbially produced MeHg is imp

167 The isotopic composition of MMHg in the Yuba River food web

168 The isotopic composition of molybdenum in five samples of gl

169 In contrast, the uranium isotopic composition of MORB requires the convective sti

170 Variations in the isotopic composition of nitrate may affect the interpret

171 Variation across climate gradients in the isotopic composition of nitrogen (N) and carbon (C) in f

172 sents the first measurements of the nitrogen isotopic composition of NO(x) (delta(15)N-NO(x)) emitted

173 n this study, large differences exist in the isotopic composition of NO(x) emitted with and without S

174 at the crystallization age together with the isotopic composition of nonradiogenic noble gases trappe

175 te or efficient capture of NOx such that the isotopic composition of NOx remains unaltered during col

176 ect and simultaneous analysis of the age and isotopic composition of nuclear material at the particle

177 levated temperatures alters the chemical and isotopic composition of oceanic crust.

178 Volatilization causes changes in the isotopic composition of organic compounds as a result of

179 attractive option to determine the hydrogen isotopic composition of organic materials where the utmo

180 The isotopic composition of our Solar System reflects the bl

181 ical processes on P cycling, we analyzed the isotopic composition of oxygen in phosphate (delta(18)O-

182 ition for the past millenium recorded by the isotopic composition of Pb in all three peat bogs is rem

183 The isotopic composition of Pb was determined in Finnish pea

184 ndex (LAI), carbon and nitrogen content, and isotopic composition of plant tissues for five to eight

185 ing models incorporated uncertainties in the isotopic composition of potential nitrate sources and re

186 with and without SCRs and SNCRs; further the isotopic composition of power plant NO(x) is higher than

187 ds, and estimates of the last glacial oxygen isotopic composition of precipitation based on global ci

188 We use the strontium-neodymium-lead isotopic composition of proglacial sediment discharged f

189 The isotopic composition of Pu and uranium (U) and the amoun

190 Here, we demonstrate that the oxygen isotopic composition of resin-extractable inorganic phos

191 been large and systematic changes in the Fe isotopic composition of seawater over the Cenozoic that

192 be a new method for analysis of the nitrogen isotopic composition of sedimentary porphyrins.

193 sent a framework for interpreting the carbon isotopic composition of sedimentary rocks, which in turn

194 For that purpose, the isotopic composition of selected SiF4 samples was determ

195 nt a new method for analyzing the delta(13)C isotopic composition of several oxygenated volatile orga

196 We measured the titanium isotopic composition of shales to constrain the chemical

197 Isotopic composition of sharks sampled in reef and seagr

198 We measured the oxygen isotopic composition of solar wind captured and returned

199 The isotopic composition of some of the meteoritic keto acid

200 22-y (1980-2002) record of the oxygen-triple isotopic composition of sulfate (SO4) aerosols retrieved

201 Measurements of the isotopic composition of sulfate and sulfide have been es

202 was the dominant cause of seasonality in the isotopic composition of sulfate relative to SO2.

203 s a constraint over the last 390 Ma from the isotopic composition of sulfur in coal.

204 silicate differentiation, we show that the W isotopic composition of terrestrial samples provides the

205 l separates, suggesting homogeneity in the U isotopic composition of the angrite parent body.

206 d Delta(199)Hg of the lake trout equaled the isotopic composition of the bloater after 6 months, refl

207 plied to ensure accurate measurements of the isotopic composition of the CO2 in ultradry air, express

208 The knowledge of the isotopic composition of the enriched silicon material is

209 Changes in the isotopic composition of the fine-root population over tw

210 months, reflecting reequilibration of the Hg isotopic composition of the fish to new food sources and

211 ta(13)C-CH4 and deltaD-CH4 correspond to the isotopic composition of the gas reservoir.

212 n processes likely affected the chemical and isotopic composition of the gases, making it difficult t

213 (iii) We account for changes in the oxygen isotopic composition of the ice sheet by using isotope-e

214 The isotopic composition of the injected CO(2) (delta(13)C -

215 been invoked to explain the nonsolar oxygen isotopic composition of the inner solar system.

216 of better information, one assumes that the isotopic composition of the input sulfate to the oceans

217 similar values and were very close to the Sr isotopic composition of the local river where they were

218 report in situ measurements of the hydrogen isotopic composition of the mineral apatite in eucrite m

219 solution as nitrate to evaluate the nitrogen isotopic composition of the NOx (delta(15)N-NOx).

220 tz (Barberton, South Africa) that reveal the isotopic composition of the paleo-atmosphere at approxim

221 Within uncertainties the isotopic composition of the produced particles is in agr

222 We argue that anthropogenic Mo modifies the isotopic composition of the recent sediments, and we det

223 the solar photosphere preserves the average isotopic composition of the solar system for elements he

224 The isotopic composition of the substrates was designed to o

225 (Delta(14)C) and stable carbon (delta(13)C) isotopic composition of the UCM solvent-extracted from c

226 Analysis of the THg concentration and Hg isotopic composition of these environmental samples indi

227 This variability in stable isotopic composition of tissues is likely to be a result

228 e paleothermometers, is independent from the isotopic composition of water from which the mineral for

229 The isotopic composition of water in hydrated minerals, such

230 u spectroscopic measurements of the evolving isotopic composition of water vapor during cirrus format

231 The Hg isotopic composition of Yuba Fan sediment (delta(202)Hg

232 The oxygen isotopic composition of zircons, for which uranium-lead

233 Philippot et al. interpreted multiple-sulfur isotopic compositions of approximately 3.5-billion-year-

234 Boron concentrations and isotopic compositions of atmospheric dust and dissolved

235 of B, Rb, Sr, Ba, Fe, Mn and Zn, as well as isotopic compositions of B and Sr.

236 Isotopic compositions of boron in the range of 0.247-2.0

237 The bulk hydrogen and nitrogen isotopic compositions of CI chondrites suggest that they

238 eal-time dependence of the carbon and oxygen isotopic compositions of CO(2) and H(2)O in terms of mos

239 aluate the feasibility of using chemical and isotopic compositions of coffee beans to identify their

240 We determined the stable isotopic compositions of cyanide-carbon (CCN) and cyanid

241 This study examined the water quality and isotopic compositions of discharged effluents, surface w

242 The Hf-Nd isotopic compositions of dust in the North Pacific centr

243 The C, N, O, and S isotopic compositions of egg components from 7 different

244 We show that the isotopic compositions of elements spanning a large mass

245 hat it is feasible to determine the U and Pu isotopic compositions of historic nuclear devices from t

246 Hydrogen isotopic compositions of hydrous minerals and organic ma

247 ere, we combine analysis of biomolecular and isotopic compositions of lipids preserved in prehistoric

248 for water that are consistent with measured isotopic compositions of lunar samples.

249 Our modelling implies that the isotopic compositions of magnesium, silicon and iron, an

250 nding paradigm assumes that the chemical and isotopic compositions of many elements in the bulk silic

251 The distinct isotopic compositions of marine and terrestrial N2O sour

252 The concentrations and isotopic compositions of mercury (Hg) in surface sedimen

253 icrobial methanogenesis was indicated by the isotopic compositions of methane and carbon dioxide, bio

254 Although isotopic compositions of methane have traditionally aide

255 by analysis in terrestrial laboratories: the isotopic compositions of O, N, and noble gases differ in

256 urement quality and reliability for hydrogen isotopic compositions of organic substances (Cr-EA metho

257 en inferred from bulk analyses of the carbon isotopic compositions of pre-2,500 Ma kerogens, these in

258 h recent indications from lunar carbon and S isotopic compositions of primitive lunar materials.

259 The anomalous oxygen isotopic compositions of refractory mineral phases may r

260 The clay-sized Hf-Nd isotopic compositions of the desert samples from the Sin

261 the strontium, radium, oxygen, and hydrogen isotopic compositions of the effluents reflect the compo

262 Isotopic compositions of the extracts indicate that a gr

263 The isotopic compositions of the main constituents of planet

264 The Pb-isotopic compositions of the Samoan lavas reveal several

265 The isotopic compositions of the total water evolved from a

266 rth is best explained by assuming that the W isotopic compositions of the two bodies were identical i

267 We systematically document the isotopic compositions of three major constituents: sulfu

268 The U isotopic compositions of trinitite glass, produced subse

269 In this study, we measured the chemical and isotopic compositions of water samples from MTM-impacted

270 These measurements revealed Zn isotopic compositions (of delta(66/64)Zn = +0.28 to -0.3

271 oth mass-dependent and mass-anomalous sulfur-isotopic composition over length scales of even a few hu

272 ges in particle dimensions, aggregation, and isotopic composition over time.

273 Lead fluxes and isotopic composition point to national/regional petrol-P

274 The pressure dependence of iron isotopic composition provides an independent constraint

275 ting pH from biogenic carbonates using boron isotopic compositions relies on the assumption that only

276 nvironments, but its influence on natural Hg isotopic composition remains to be ascertained.

277 akes is dominantly of natural origin, having isotopic composition resembling that measured for indige

278 e young (< 1.3 Ga), the spread of whole rock isotopic compositions results from crystallization of a

279 The xenon isotopic composition shows deficits in heavy xenon isoto

280 mpactor that formed the Moon probably had an isotopic composition similar to that of the Earth, hence

281 The spinel from the white rind has an isotopic composition suggesting that it was part of a ca

282 demonstrate that lunar magmatic water has an isotopic composition that is indistinguishable from that

283 Meteorites contain a wide range of oxygen isotopic compositions that are interpreted as heterogene

284 ver been observed to host the primitive lead-isotopic compositions that are required for an early (ro

285 the CAI margin, approaching a planetary-like isotopic composition, then shifts to extremely (16)O-ric

286 Comparison of shell oxygen isotopic composition to depth changes in the calculated

287 report calibration data linking single-cell isotopic compositions to the corresponding bulk isotopic

288 rgrown with the metal that show them to have isotopic compositions unlike any terrestrial minerals an

289 os measured on in-house standards of unknown isotopic composition using the (12)C(15)N(-)/(12)C(14)N(

290 an isotopic reference material with known B isotopic composition was added.

291 with different mole fractions but identical isotopic composition was demonstrated to be highly accur

292 Hydrogen and oxygen isotopic compositions were calculated by numerical integ

293 Large spatial variations in Hg isotopic compositions were observed in the SCS (delta(20

294 Nonnatural molybdenum isotopic compositions were observed, reflecting an input

295 not cause a measurable change in the carbon isotopic composition, whereas for pure-phase evaporation

296 in oxidized multiporphyrin arrays of normal isotopic composition, wherein (1)H and (14)N serve as th

297 (142)Nd anomalies, all have a homogeneous W isotopic composition, which is approximately 2epsilon-un

298 evidence for the effect of pressure on iron isotopic composition, which we found to vary according t

299 By combining isotopic composition with (1)H NMR data using a multivar

300 that there is a more positive radiogenic Hf isotopic composition with clay-sized fractions than the