ライフサイエンスコーパス: osmium

1 n spherules, aciniform carbon, platinum, and osmium.

2 aining precious metals such as ruthenium and osmium.

3 and impacted the global geochemical cycle of osmium.

4 Osmium(0) complexes derived from Os3(CO)12 and XPhos (2-

5 Using XPhos-modified ruthenium(0) or osmium(0) complexes, enol carboxylate-carbonyl oxidative

6 The properties of tris(2,2'-bipyridine)osmium (1) were investigated for use as the liquid-phase

7 zed to NAD by a thermostable redox mediator, osmium (1,10-phenanthroline-5,6-dione)2-poly(4-vinylpyri

8 he best catalyst, platinum(44)/ruthenium(41)/osmium(10)/iridium(5) (numbers in parentheses are atomic

9 ic lavas from Hawaii show enrichments in the osmium-186/osmium-188 ratio (186Os/188Os) of 0.008 to 0.

10 om Hawaii show enrichments in the osmium-186/osmium-188 ratio (186Os/188Os) of 0.008 to 0.018%, relat

11 Three osmium ((192)Os, (190)Os, and (188)Os) and three unique

12 hesize the first examples of mixed ruthenium-osmium 3D-nanocrystals.

13 s-linked FcepsilonRI and GM1 also accumulate osmium, a stain for unsaturated lipids, and are sites fo

14 eprived and NaCl-treated plants had elevated osmium accumulation in their cuticles.

15 lation technique to analyse large numbers of osmium alloy grains to quantify the distribution of depl

16 In particular, peridotites with unradiogenic osmium and ancient rhenium-depletion ages (to 1.36 x 10(

17 ns-from air bubbles (rho approximately 0) to osmium and iridium (rho approximately 23 g/cm(3)).

18 in the marine isotopic ratios of strontium, osmium and lithium suggest that extensive uplift of moun

19 anomalous scattering from the LIII edges of osmium and lutetium to obtain the necessary phasing sign

20 These trends are compared to those of osmium and rhenium forebears as well as to the reactivit

21 rcolating melts enhance the mobility of both osmium and rhenium.

22 uence of two well-defined and iso-structural osmium and ruthenium polypyridyl complexes results in in

23 cessive deposition of redox-active layers of osmium and ruthenium polypyridyl complexes, leads to sel

24 The hydrocarbyl group does not go to osmium and then move to nitrogen--there is no change in

25 lts place new constraints on the behavior of osmium (and possibly other platinum group elements) duri

26 tween the PFET reagent, tris(2,2'-bipyridine)osmium, and standards ((ferrocenylmethyl)trimethylammoni

27 A new combined rhenium-osmium- and platinum-group element data set for basalts

28 ymium, or europium; M is iron, ruthenium, or osmium; and X is phosphorus, arsenic, or antimony) and r

29 mical proton-coupled electron transfer of an osmium aquo complex attached to a self-assembled monolay

30 Dinuclear trihydroxido-bridged osmium-arene complexes are inert and biologically inacti

31 in a Pt(PBu(t)3) group that is bonded to the osmium atom and a bridging alkenyl ligand that is pi-bon

32 HCC(Ph)C(H)C(H)Ph, that is pi-bonded to the osmium atom and sigma-bonded to the platinum atom.

33 ging alkenyl ligand that is pi-bonded to the osmium atom.

34 ith the expected greater pi donation for the osmium atom.

35 doped graphitic support on which individual osmium atoms hop and migrate to form 3D-nanocrystals, as

36 Horseradish peroxidase cross-linked in an osmium based redox polymer hydrogel (HRP-Os) was physica

37 anodic and cathodic bioelectrocatalysts with osmium based redox polymers and home-made enzymes we cou

38 f a new nonvolatile, stable, and recoverable osmium-based reagent devised for the stoichiometric cis

39 a number of attempts to harness alternative osmium-based reagents, including microencapsulation and

40 ccase of Trametes versicolor and a series of osmium-based redox polymer mediators covering a range of

41 -sGDH) from Acinetobacter calcoaceticus with osmium-based redox polymers and a cross-linker.

42 The choice of metal catalyst (cobalt- or osmium-based) allowed for the formation of THF rings wit

43 The osmium bipyridil redox relay sites on polycation poly(al

44 The array features 7 nm thick osmium bipyridyl poly(vinylpyridine) chloride [Os(bpy)2(

45 s derived from the divalent attachment of an osmium bis-bipyrdine complex to histidine residues withi

46 7-trithiacyclononane (Co(TTCN)2(3+/2+)), and osmium bis-dimethyl bipyridine bis-imidazole (Os(Me2bpy)

47 nd theoretical analyses of the nature of the osmium-bound, "elongated" dihydrogen ligands in [Cp*OsH(

48 These observations suggest that osmium can be partitioned into oxidized and chlorine-ric

49 subduction of oceanic crust by showing that osmium can be transported into the mantle wedge.

50 The binding of organometallic osmium carbonyl clusters onto the surface of gold nanopa

51 projectile size, if the soluble fraction of osmium carried by the impacting body is known.

52 rd (E)-alpha,beta-unsaturated ester 16, then osmium-catalyzed asymmetric dihydroxylation for the intr

53 The syntheses utilize osmium-catalyzed asymmetric dihydroxylation of (E)-alpha

54 y steps in the syntheses are as follows: (i) osmium-catalyzed asymmetric dihydroxylation of 4-O-prote

55 Key steps in the synthesis of 1 include the osmium-catalyzed asymmetric dihydroxylation of olefin 13

56 The key transformation was the sequential osmium-catalyzed bis-dihydroxylation reaction of substit

57 omplishing the synthesis of heterocycles via osmium-catalyzed oxidative cyclization onto an alkene is

58 ormed nitrogen sources in the intermolecular osmium-catalyzed oxyamination reaction of a variety of m

59 nearly identical to those of (mes)3Ir=O, the osmium complex (ArN)3Os=O transfers its oxygen atom 12 o

60 with electroactive polyvinylpyridine bearing osmium complex (Os-PVP).

61 The new results on this osmium complex are compared with earlier work on the sim

62 An osmium complex bearing a terminal hydrogen-substituted s

63 etal are found to be larger for the ethylene-osmium complex than for the analogous ethylene-iron comp

64 Newly synthesised osmium complex-modified redox polymers were tested for p

65 ugh a spacer to the oligonucleotide) and the osmium complex.

66 between LAMP amplicon and the redox-reactive osmium complex.

67 sphere chloride ligand of the polymer-bound osmium-complex: Cross-linking and electrodeposition of t

68 tuted of polyallylamine bearing redox-active osmium complexes and glycosidic residues (lactose) is us

69 ult when inner-sphere chloride anions of the osmium complexes are exchanged by imidazole functions of

70 ven at 1 atm, whereas excited states of both osmium complexes are quenched in the presence of oxygen.

71 Coupling of osmium complexes containing amine functional groups to e

72 y we incorporate highly luminescent divalent osmium complexes into PSP.

73 In addition, the corresponding osmium complexes of the unsubstituted ligands have also

74 We report new divalent osmium complexes that feature strong red metal-to-ligand

75 The divalent osmium complexes were heptafluorobutyrate salts of [Os(N

76 the first time in these types of luminescent osmium complexes.

77 t on the mechanism of action of these organo-osmium complexes.

78 t to platinum drugs, exposure to this organo-osmium compound does not cause significant apoptosis wit

79 To the best of our knowledge, 4 is the first osmium compound to induce ER stress in cancer cells.

80 ring of the data based on the possibility of osmium contamination by sea water.

81 Iridium-osmium cross-exchange takes place at an intermediate rat

82 DNA binding of osmium did not correlate with cytotoxicity, indicating t

83 photoinduced homolysis of the corresponding osmium dimers.

84 al tool to investigate stratified copper and osmium distribution in LbL thin films relevant to biosen

85 The fractionation of rhenium and osmium during partial melting in the upper mantle makes

86 there is no change in the atoms bound to the osmium during the reactions.

87 Time-series RNA sequencing suggested that osmium-exposed A2780 cells undergo a metabolic shunt fro

88 Osmium extracted from unequilibrated bulk chondrites has

89 of the sarcoplasmic reticulum (visualized by osmium ferricyanide staining of thin tissue sections), w

90 , as demonstrated by electron micrographs of osmium ferrocyanide-stained SR in the two smooth muscles

91 Osmium-ferrocyanide treatment also disclosed several pre

92 core, formed through the fast dealloying of osmium from an Ir25Os75 alloy, exhibits an exceptional b

93 Osmium from metamorphosed bulk chondrites does not have

94 Rhenium/osmium geochronology demonstrates that the enrichment is

95 ocean is particularly remarkable given that osmium has few industrial uses.

96 h's surface anthropogenic fluxes of iridium, osmium, helium, gold, ruthenium, antimony, platinum, pal

97 ine)(2+) bis-hexafluorophosphate (Ru-PZn-A); osmium(II) [5-(4'-ethynyl-(2,2';6',2' '-terpyridinyl))-1

98 idine)(2+) bis-hexafluorophosphate (Ru-PZn); osmium(II) [5-(4'-ethynyl-(2,2';6',2''-terpyridinyl))-10

99 boxylate to deliver allylic ruthenium(II) or osmium(II) alkoxides.

100 n the A2780 ovarian carcinoma cells for four osmium(II) arene complexes [(eta(6)-arene)Os(4-methyl-pi

101 (2,2':6',2' '-terpyridine)ruthenium(II) and -osmium(II) centers connected via a geometrically constra

102 Iodido osmium(II) complexes [Os(eta(6)-arene)(XY)I](+) (XY = p-

103 s to a central bis(2,2':6',2' '-terpyridine) osmium(II) core.

104 ipyridine)chloro(4,4'-trimethylenedipyridine)osmium(II) in fast-scan voltammetric measurements (scan

105 Two nanocrystal-osmium(II) polypyridyl (NC-Os(II)PP) conjugates have bee

106 of a dilute (submillimolar) solution of the osmium(II) polypyridyl complex [Os(bpy)2dcbpy](PF6)2 (dc

107 ) [5-(4'-ethynyl-(2,2';6',2' '-terpyridinyl))osmium(II)-15-(4'-ethynyl-(2,2';6',2''-terpyridinyl))-10

108 microscopy (TEM) samples, our technique uses osmium impregnation (OTO) to make the samples conductive

109 ng scenario and suggests that the radiogenic osmium in ocean-island basalts can better be explained b

110 suming total vaporization and dissolution of osmium in seawater.

111 Osmium in the Os(i) carrier is likely from nucleosynthet

112 y of magmatic sulphides (the main carrier of osmium) in abyssal peridotites and show that the 187Os/1

113 ntaining five elements (platinum, ruthenium, osmium, iridium, and rhodium), 80 binary, 280 ternary, a

114 wer than in urban aerosols, 69% of the total osmium is of anthropogenic origin.

115 Osmium is one of the rarer elements in seawater, with ty

116 rites from the conglomerates yield a rhenium-osmium isochron age of 3.03 +/- 0.02 gigayears and an in

117 this study, we report PGE concentrations and osmium isotope ((187)Os/(188)Os) ratios of airborne part

118 To explain the elevated osmium isotope (186Os-187Os) signatures in oceanic basal

119 Here we report rhenium-osmium isotope and mineral compositions of peridotite xe

120 The osmium isotope composition ((187)Os/(188)Os ratio) of de

121 Here we report osmium isotope compositions of more than 700 osmium-rich

122 Paired osmium isotope data and numerical modelling results sugg

123 Here we report osmium isotope data on lavas from a transect across the

124 We infer that the gaussian shape of the osmium isotope distribution is the signature of a random

125 Osmium isotope ratios in Hawaiian lavas indicate a mass

126 Paquay et al. reported that osmium isotope ratios in marine sediments can be used to

127 Osmium isotope ratios provide important constraints on t

128 produce observable excursions in the marine osmium isotope record, suggesting that previously unreco

129 Instead, we interpret the osmium isotope signature as having a deep origin and inf

130 ges extend to 2.5 Gyr, and we infer that the osmium isotope signature is unlikely to be derived from

131 /Si and Al/Si ratios, oxygen-isotope ratios, osmium-isotope ratios and D/H, Ar/H2O and Kr/Xe ratios s

132 This result indicates that osmium isotopes record information about ancient melting

133 cting upper mantle may be less radiogenic in osmium isotopes than previously recognized.

134 Osmium isotopic analyses of picritic lavas from Hawaii s

135 However, the osmium isotopic compositions of abyssal peridotites and

136 ates and in the Japan arc have neodymium and osmium isotopic compositions that are consistent with ad

137 The osmium isotopic data form a wide, essentially gaussian d

138 Osmium isotopic data on peridotite xenoliths from the Ke

139 restimated and consequently there is no true osmium isotopic gap between MORBs and abyssal peridotite

140 Lead, oxygen, and osmium isotopic ratios measured on Hawaiian basalts can

141 e measured rotational constants for the main osmium isotopomer ((192)Os) are A = 929.3256(6), B = 755

142 The osmium loading can also be reduced to as little as 0.2 m

143 with a catalytic amount of Lewis acid in the osmium mediated oxidative cyclization results in higher

144 e polarization immunoassay (FPI) based on an osmium metal-ligand complex, Os(bpy)2(dcbpy).

145 The combination of ruthenium and osmium metallopolymers in the films provided a catalytic

146 Attachment of the osmium moiety is demonstrated by mass spectroscopy (MS-M

147 Complexation with osmium of quinoxalinone derivatives with benzimidazole o

148 (= 1.3), indicating a terrestrial origin of osmium (Os) in these samples.

149 Metallic osmium (Os) is one of the most exceptional elemental mat

150 s difference between the iridium-iridium and osmium-osmium exchange rates can be rationalized by an a

151 ct cholesterol and osmium-thiocarbohydrazide-osmium (OTO) to detect neutral lipids in Bruch's membran

152 lectrodes (SPCEs) modified with a conductive osmium polymer (Os-PVP) complex were employed to quantif

153 irect wiring of the FDH in a highly original osmium-polymer hydrogel was found to offer a better enzy

154 at subduction zones will retain high Re/Os (osmium) ratios and become enriched in radiogenic 187Os.

155 n probing future applications of derivatized osmium reagents.

156 yranose dehydrogenase as an enzyme catalyst, osmium redox polymers [Os(4,4'-dimethoxy-2,2'-bipyridine

157 d" to graphite electrodes with two different osmium redox polymers: [Os(4,4'-dimethyl-2,2'-bipyridine

158 ectioning of large samples but is limited to osmium-resistant probes, and is technically difficult.

159 aining half-sandwich complexes of ruthenium, osmium, rhodium and iridium are also reviewed.

160 s into half-sandwich complexes of ruthenium, osmium, rhodium and iridium might lead to the developmen

161 osmium isotope compositions of more than 700 osmium-rich platinum-group element alloys derived from t

162 nvolved in oxidation-reduction cycles of the osmium sites, the ellipsometric enzyme film thickness, a

163 he trans-Golgi cisternae, and an increase in osmium staining of the secretory products.

164 Thus, the effect of sea water on the osmium systematics of abyssal peridotites has been overe

165 identified by the potassium pyroantimoniate-osmium technique and as the electron-dense vacuoles obse

166 These chlorins on reacting with osmium tetraoxide produced the corresponding vic-dihydro

167 tivity of meso-substituted porphyrins in the osmium tetraoxide reaction nor the general substituent m

168 Treatment of the photoproduct with osmium tetraoxide transforms the alkene to a diol and th

169 ituents upon the reaction of porphyrins with osmium tetraoxide, and the pinacol-pinacolone rearrangem

170 lled carbon nanotubes have been reacted with osmium tetroxide (OsO(4)) in solution in the presence of

171 e transition states) of ethylene addition to osmium tetroxide (OsO(4), and amine ligated), rhenate (R

172 obtained from tissue biopsy samples fixed in osmium tetroxide and analyzed by Beckman Coulter Multisi

173 Base ligation lowers osmium tetroxide and ethylene distortion energies due to

174 We present here a comparison of CCM with osmium tetroxide and with potassium permanganate, tested

175 Here we show that osmium tetroxide can be replaced by potassium permangana

176 er (HPA-S, Anton Paar), sparging of volatile osmium tetroxide from the sample solution, and measureme

177 Recently, the expense and toxicity of osmium tetroxide have led to a number of attempts to har

178 Osmium tetroxide is reduced by molecular hydrogen in the

179 ul, we did develop a sensitive test for free osmium tetroxide leached from the reagent in situ: this

180 Osmium tetroxide mediated dihydroxylation of a range of

181 Osmium tetroxide on poly (4-vinylpyridine) was used to w

182 xylation of these didehydro derivatives with osmium tetroxide or with AD-mix alpha gave a mixture of

183 With osmium tetroxide postfixation, the lipid bilayer was mai

184 Postfixation with a ferrocyanide-osmium tetroxide solution preserved a dense network of c

185 talyzed oxidations, for example, acting with osmium tetroxide to catalyze the aerobic dihydroxylation

186 3% glutaraldehyde, postfixed in 1% buffered osmium tetroxide, dehydrated, and embeded in araldite.

187 tructure, demonstrated by hyperreactivity to osmium tetroxide, hydroxylamine, and diethyl pyrocarbona

188 utaraldehyde alone, and those postfixed with osmium tetroxide, were imaged under ethanol according to

189 1w cells were not distinctively stained with osmium tetroxide, which interacts specifically with UFA

190 st efficiently accomplished by reaction with osmium tetroxide.

191 ith N-methylmorpholine N-oxide and catalytic osmium tetroxide.

192 isomer of Tg were prepared by oxidation with osmium tetroxide.

193 the need for toxic chemicals, in particular osmium tetroxide.

194 ith tannic acid in lieu of postfixation with osmium tetroxide.

195 essing, for the enhancement of contrast with osmium tetroxide/potassium ferricyanide, for BSE imaging

196 ectron microscopy (EM) or for ruthenium-, or osmium-tetroxide vapor fixation, followed by immediate e

197 ained with filipin to detect cholesterol and osmium-thiocarbohydrazide-osmium (OTO) to detect neutral

198 Like osmium, tungsten is a siderophile ('iron-loving') elemen

199 y, pyramidalization of the planar tris(imido)osmium(VI) fragment requires placing a pair of electrons

200 The osmium(VI) nitrido complex TpOs(N)Cl(2) (1) has been pre

201 The effect of a newly developed osmium(VI) nitrido complex, 1, on breast cancer stem cel

202 ellular response evoked by antiproliferating osmium(VI) nitrido compounds of general formula OsN(N^N)

203 The oxotris(imido)osmium(VIII) complex (ArN)3Os=O (Ar = 2,6-diisopropylphe