ライフサイエンスコーパス: plutonium

1 us studies on the global fallout uranium and plutonium.

2 tic models of clearance for soluble forms of plutonium.

3 H atoms, were investigated for isolation of plutonium.

4 eighbours in the periodic table, uranium and plutonium.

5 d magnetic moments in previously nonmagnetic plutonium.

6 cal mean field theory calculations for delta-plutonium.

7 e container walls and the oxidation state of plutonium.

8 ase for the immobilization of excess weapons plutonium.

9 apparent than in the 5f valence electrons of plutonium.

10 rapolated to environmental concentrations of plutonium.

11 curves in a face-centered cubic (fcc) delta-plutonium-0.6 weight % gallium alloy.

12 In principle, the spin-(1/2) plutonium-239 ((239)Pu) nucleus should be active in nucl

13 e elastic softening with fluctuations of the plutonium 5f mixed-valence state.

14 Total plutonium activities were determined to be not significa

15 he nuclear properties of the late actinides (plutonium, americium and curium) are fully understood an

16 onuclides, such as the transuranic actinides plutonium, americium, and curium, present severe health

17 Annual doses to the lung from plutonium, americium, and uranium isotopes were calculat

18 ng the effectiveness of the method for rapid plutonium analysis.

19 dicity occurs in the actinide series between plutonium and americium as the result of the localizatio

20 These include plutonium and minor actinides such as americium and curi

21 parate and purify target analytes, whereupon plutonium and neptunium were simultaneously isolated and

22 or uranium) and anion exchange (AGMP-1 M for plutonium and neptunium) chromatographic separations wer

23 was used as a chemical yield tracer for both plutonium and neptunium.

24 , rapid and effective methods to analyze for plutonium and other actinide metals are needed.

25 understanding the environmental transport of plutonium and other contaminants capable of similar redo

26 ue effectively encapsulated a portion of the plutonium and prevented its clearance from the body or t

27 s can be related to the phase transitions of plutonium and to strong coupling between the lattice str

28 lectronic origin of the bonding anomalies in plutonium, and can be applied to predict generalized val

29 eous determination of technetium, neptunium, plutonium, and uranium in large volume (200 L) seawater.

30 In contrast, the 5f orbitals of plutonium appear localized and surprisingly insensitive

31 ., the six different allotropes of elemental plutonium) are widely believed to depend on the related

32 en Np and its closest neighbors, uranium and plutonium, are found.

33 Single-bead anion exchange of plutonium at nanomolar and subpicomolar concentrations i

34 ification of Fukushima plutonium despite the plutonium background.

35 ing symmetry and mechanism of a new class of plutonium-based high-Tc superconductors and predict the

36 colloids is important for the prediction of plutonium behaviour in the geosphere and in engineered s

37 Three different ligands were evaluated for plutonium binding, and the best results were obtained us

38 dy investigates the use of DGT technique for plutonium bioavailability measurements in chemically dif

39 available DGT devices with Chelex resin for plutonium bioavailability measurements in laboratory con

40 separation, concentration, and detection of plutonium by the coupling an electrochemical flow cell o

41 ach enables us to study the phase diagram of plutonium, by providing access to the energetics and one

42 e ratio of organic to aqueous of up to 10:1, plutonium can be effectively stripped from 30% tributyl

43 Bound plutonium can have a marked effect on the dose to the lu

44 eat core, the post depositional migration of plutonium clearly exceeds that of uranium.

45 ynthetic route to obtain salt-free intrinsic plutonium colloids by ultrasonic treatment of PuO2 suspe

46 Fundamental knowledge on intrinsic plutonium colloids is important for the prediction of pl

47 tes were monitored as a function of time and plutonium concentration in hematite (alpha-Fe2O3) suspen

48 7.5 under anaerobic conditions with a total plutonium concentration of 1.2 x 10(-8) M exceeding thos

49 The reaction order with respect to plutonium concentration was found to be -0.68 +/- 0.09,

50 of Pu(V) reduction changes as a function of plutonium concentration.

51 netics of experiments carried out under high plutonium concentrations (i.e., >10(-7) M Pu) cannot be

52 Batch kinetic experiments were conducted at plutonium concentrations between 10(-8) and 10(-6) M at

53 V) was found to be the rate-limiting step at plutonium concentrations less than approximately 10(-7)

54 Plutonium content and isotopic abundances were measured

55 Weapons-grade uranium and plutonium could be used as nuclear explosives with extre

56 e is reported, with a continuous increase in plutonium coverage observed in situ over several hours.

57 ll allow for the identification of Fukushima plutonium despite the plutonium background.

58 Americium-241 and plutonium determinations will become of greater importan

59 0 ppm of humic acid of an organic-rich soil, plutonium diffusion was hindered by a factor of 5, with

60 f a (239)Pu resonance from a solid sample of plutonium dioxide (PuO(2)) subjected to a wide scan of e

61 Plutonium displays phases with enormous volume differenc

62 these aberrations was highly correlated with plutonium dose to the bone marrow.

63 Using the recent observation of plutonium dynamic magnetism, we construct a theory for p

64 s of chemical investigations have shown that plutonium exhibits some of the most complicated chemistr

65 ard this objective, a new method for binding plutonium for analysis by alpha spectrometry has been de

66 nvestigate the bioaccumulation of the labile plutonium fraction in aquatic biota.

67 ation protocol between uranium and neptunium/plutonium fractions was developed based on the observati

68 P), resulted in the release of americium and plutonium from one or more defense-related transuranic (

69 aration processes for recovering uranium and plutonium from spent nuclear fuel are essential to the d

70 c system was effective in clearing deposited plutonium from the lung tissues.

71 contrasted with the multiple valences of the plutonium ground state, which we characterize by a valen

72 Magnetism in plutonium has been debated intensely, but the present ma

73 e electronic and thermodynamic complexity of plutonium has resisted a fundamental understanding for t

74 ormations important for applications such as plutonium immobilization, fast ion conduction, and therm

75 The device was a plutonium implosion device similar to the device that de

76 dedioxime (H2A), are reported for recovering plutonium in a PUREX process.

77 has been successfully applied to analyze for plutonium in both an archived nuclear debris sample and

78 ent procedure specifically targeted to trace plutonium in bulk environmental samples.

79 f valence orbitals of uranium, neptunium and plutonium in chemical bonding using advanced spectroscop

80 Alpha radiation activity from deposited plutonium in Human Case 0269 was observed primarily alon

81 ped for rapid and automated determination of plutonium in human urine.

82 determine the diffusion coefficients (D) of plutonium in polyacrylamide (PAM) gel and found D in the

83 gether with a determination of the amount of plutonium in the debris, these measurements of extinct f

84 for long-term low-level monitoring of trace plutonium in the environment.

85 is a consequence of the special location of plutonium in the periodic table, on the border between t

86 Furthermore, separation of residual plutonium in the separated uranium fraction was achieved

87 l suited for expedient analysis of low-level plutonium in urine of exposed individuals as required in

88 l and give a new viewpoint on the physics of plutonium, in which the alpha- and delta-phases are on o

89 In marked contrast, spontaneous and plutonium-induced tumors had a very high (81.8%) inciden

90 U and Pu and in a wide range of uranium and plutonium intermetallic compounds.

91 luations estimated the fraction of the total plutonium inventory released to the environment relative

92 Plutonium is a metal of both technological relevance and

93 We find that the ground state in plutonium is a quantum superposition of two distinct ato

94 mical mean-field theory that suggest epsilon-plutonium is mechanically unstable.

95 epsilon phase (body-centered cubic; bcc) of plutonium is predicted utilizing first-principles electr

96 Plutonium is shown to be retained on anodized glassy car

97 nsely, but the present magnetic approach for plutonium is validated by the close agreement between th

98 Results showed that plutonium isotopes (i.e., (239)Pu, (240)Pu, (241)Pu, and

99 Plutonium isotopes and (237)Np were measured using induc

100 monitoring of the SRS environment, revealing plutonium isotopic compositions, e.g., (244)Pu, that ref

101 mass spectrometry (3STIMS) measurements for plutonium isotopic content and isotopic ratios.

102 Plutonium isotopic ratios and their distance from the so

103 ference material (CRM) 136 solution (CRM 136-plutonium isotopic standard, New Brunswick Laboratory, A

104 Plutonium(IV) adsorbed to quartz and subsequently spiked

105 s study measured reductive solubilization of plutonium(IV) hydrous oxide (Pu(IV)O(2).xH(2)O((am))) wi

106 has been developed for the quantification of plutonium(IV) in environmental samples.

107 Plutonium(IV) is one example of a species which displays

108 nuclear-weapons workers who were exposed to plutonium many years ago.

109 While plutonium may exist in multiple oxidations states plus c

110 We present phonon properties of plutonium metal obtained from a combination of density-f

111 The first quaternary plutonium metal thiophosphates have been synthesized by

112 We report a new formal oxidation state for plutonium, namely Pu(2+) in [K(2.2.2-cryptand)][Pu(II)Cp

113 distributions of long-term retained inhaled plutonium-nitrate [(239)Pu (NO(3))(4)] deposited in the

114 first direct observation of such behavior of plutonium on a naturally occurring mineral, providing in

115 Selective capture and purification of plutonium onto the resin beads is then performed by pres

116 Changes in aqueous- and solid-phase plutonium oxidation states were monitored as a function

117 Perplexing aspects of plutonium oxide chemistry can now be explained.

118 The values of the plutonium partition coefficients (Kd) between water and

119 The objective was to study plutonium partitioning between immobile and mobile humic

120 Plutonium plays an important role within nuclear waste m

121 k requires the products of the pan gu (png), plutonium (plu) and giant nuclei (gnu) genes.

122 rs encoded by the genes, giant nuclei (gnu), plutonium (plu) and pan gu (png).

123 bryos from Drosophila mothers mutant for the plutonium (plu) gene contain giant polyploid nuclei resu

124 Three genes, pan gu (png), plutonium (plu), and giant nuclei (gnu) are required to

125 Three genes, pan gu (png), plutonium (plu), and giant nuclei (gnu) coordinate these

126 a melanogaster, the cell cycle control gene, plutonium (plu), is located between the PCNA and RpS18 g

127 Plutonium possesses the most complicated phase diagram i

128 , (244)Pu, that reflect the unique legacy of plutonium production at SRS.

129 e in Washington became the location for U.S. plutonium production.

130 Plutonium (Pu) adsorption to and desorption from mineral

131 adioactive waste containing small amounts of plutonium (Pu) and americium (Am) was disposed in shallo

132 multaneous determination of ultratrace level plutonium (Pu) and neptunium (Np) using iron hydroxide c

133 Besides the long-lived radionuclides plutonium (Pu) and neptunium (Np), which are key element

134 Plutonium (Pu) and non-natural uranium (U) originating f

135 Plutonium (Pu) dioxide particles were produced from cert

136 Assessing the bioavailability of plutonium (Pu) helps to predict its toxic effects on aqu

137 ETS) has been previously shown to accumulate plutonium (Pu) in a colloidal subfraction and is hypothe

138 s testing (NWT) resulted in the injection of plutonium (Pu) into the atmosphere and subsequent global

139 Uranium (U) and plutonium (Pu) isotopic ratios of intercepted materials

140 Subsurface transport of plutonium (Pu) may be facilitated by the formation of in

141 erstanding of the phase diagram of elemental plutonium (Pu) must include both, the effects of the str

142 The rates and extent of plutonium (Pu) sorption and desorption onto mineral surf

143 B), fulvic acid (FA), and humic acid (HA) on plutonium (Pu) sorption to goethite was studied as a fun

144 is work presents the findings of a long-term plutonium (Pu) study at Savannah River Site (SRS) conduc

145 Radioactive waste containing a few grams of plutonium (Pu) was disposed between 1960 and 1968 in tre

146 es into the environment, and trace levels of plutonium (Pu) were detected in northeastern Japan.

147 Plutonium (Pu), americium (Am), and curium (Cm) activiti

148 ctivity and nuclear weapons debris including plutonium (Pu), the legacy of which is a long-lasting so

149 nts (e.g., (89)Sr, (90)Sr, (103)Ru, (106)Ru, plutonium), pure beta-emitters ((3)H, (14)C, (35)S), gas

150 ectrometry (ICPMS) or alpha spectrometry for plutonium quantification.

151 g-term retention of inhaled soluble forms of plutonium raises concerns as to the potential health eff

152 Plutonium reduction in these systems was attributed to t

153 Pu uptake rates were determined by the plutonium remaining in solution after specific elapsed t

154 For example, plutonium's 5f electrons are poised on the border betwee

155 Uranium and plutonium's 5f electrons are tenuously poised between st

156 rved superconductivity results directly from plutonium's anomalous electronic properties and as such

157 Aqueous solution plutonium samples were evaporated and encapsulated insid

158 n of CRM NBS 947 and other sulfate and oxide plutonium samples.

159 ament carburization for age determination of plutonium samples.

160 Overall, the plutonium signatures obtained in this study reflect a di

161 als is compared to the limited literature on plutonium solid-state compounds.

162 Plutonium sorption decreased in the presence of DFOB (re

163 However, it has not been applied for plutonium speciation measurements yet.

164 dynamic magnetism, we construct a theory for plutonium that agrees with relevant measurements by usin

165 Given the practical importance of metallic plutonium, there is considerable interest in understandi

166 tant bond distances and angles for these new plutonium thiophosphate materials is compared to the lim

167 an and dogs had a nonuniform distribution of plutonium throughout the lung tissue.

168 maged reactors were the major contributor of plutonium to surface soil at the source, decreasing rapi

169 Plutonium undergoes a 25 per cent increase in volume whe

170 wed substantial sequestration of water-borne plutonium (up to 73%) on the humics-coated silica gels.

171 in vitro assays, we found that intracellular plutonium uptake can occur through siderocalin-mediated

172 tions of the lattice dynamical properties of plutonium using an electronic structure method, which in

173 Separation and purification of trace plutonium was carried out followed by three stage therma

174 In 2004, a bottle containing a sample of plutonium was recovered from a Hanford waste trench.

175 The chemical yields of plutonium were averagely better than 90% under the optim

176 superconductivity if the hazardous material plutonium were not a constituent.

177 d precision of isotope ratio measurements of plutonium when compared to the established resin bead lo

178 Nevertheless, the electronic structure of plutonium, which directly influences its metallurgical p

179 apons-grade, heat source, and higher burn-up plutonium with fallout material.

180 , USA (SRS) decades ago, trace quantities of plutonium with highly unique isotopic characteristics st

181 extend the range of complexity exhibited by plutonium with the discovery of superconductivity in PuC

182 ratio measurements of ultratrace amounts of plutonium with thermal ionization mass spectrometry (TIM

183 and beagle dogs, the appearance of retained plutonium within the respiratory tract was inconsistent

184 ore than half the blood cells of the healthy plutonium workers contain large (>6 Mb) intrachromosomal

185 mium, copper, lead, mercury, silver, uranium/plutonium, zinc) exemplify the problem.