ライフサイエンスコーパス: osmium

1 in the electron microscope when stained with osmium.

2 ion protocols which use toxic metals such as osmium.

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

4 aining precious metals such as ruthenium and osmium.

5 and impacted the global geochemical cycle of osmium.

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

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

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

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

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

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

12 n (d(56)Fe = 0.79 to 0.90%) and unradiogenic osmium ((187)Os/(188)Os = 0.111).

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

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

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

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

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

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

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

20 on Magellan Rise, nearby OJN, with detailed osmium and carbon isotopic stratigraphy.

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

22 sm remains a probable source of unradiogenic osmium and light carbon and a causative mechanism of OAE

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

43 indium tin oxide surface functionalised with osmium-based compound.

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

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

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

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

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

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

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

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

52 7-trithiacyclononane (Co(TTCN)2(3+/2+)), and osmium bis-dimethyl bipyridine bis-imidazole (Os(Me2bpy)

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

68 An osmium complex bearing a terminal hydrogen-substituted s

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

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

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

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

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

74 and (NHC)PH with the dinuclear ruthenium and osmium complexes [(eta(6)-p-cymene)MCl(2)](2) (M = Ru, O

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

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

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

78 Coupling of osmium complexes containing amine functional groups to e

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

80 is thus applicable for such measurements in osmium complexes of other oxidation states, including th

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

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

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

84 Osmium complexes with osmium in different oxidation stat

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

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

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

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

89 as we revealed that at least three different osmium-containing complexes can be found depending on th

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

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

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

93 photoinduced homolysis of the corresponding osmium dimers.

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

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

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

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

98 Osmium extracted from unequilibrated bulk chondrites has

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

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

101 Osmium-ferrocyanide treatment also disclosed several pre

102 Isotopic excursions of osmium followed by carbon that mark the rapid onset of O

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

104 Osmium from metamorphosed bulk chondrites does not have

105 Rhenium/osmium geochronology demonstrates that the enrichment is

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

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

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

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

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

111 Low-temperature protonation of the osmium(II) alkyl compounds (C(5)Me(5))Os(dfmpm)R, where

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

113 (2,2':6',2' '-terpyridine)ruthenium(II) and -osmium(II) centers connected via a geometrically constra

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

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

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

117 ves Dexter energy transfer from photoexcited osmium(II) photocatalysts to the diazo, thus revealing a

118 Osmium(II) polypyridines are a well-known class of compl

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

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

121 ) [5-(4'-ethynyl-(2,2';6',2' '-terpyridinyl))osmium(II)-15-(4'-ethynyl-(2,2';6',2''-terpyridinyl))-10

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

123 Osmium complexes with osmium in different oxidation states (II, III, IV, and V

124 We show that the measured accumulation of osmium in fixed tissue obeys empirically a quadratic dep

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

126 suming total vaporization and dissolution of osmium in seawater.

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

128 ately simulates the measured accumulation of osmium in tissue.

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

130 ite, a lithology known to carry unradiogenic osmium inherited from prior convection and melt depletio

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

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

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

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

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

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

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

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

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

140 Paired osmium isotope data and numerical modelling results sugg

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

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

143 Osmium isotope ratios in Hawaiian lavas indicate a mass

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

145 Osmium isotope ratios provide important constraints on t

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

147 tuffs in Hokkaido, Japan preserve carbon and osmium isotope shifts recording OAE1a.

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

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

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

151 Osmium isotopes of abyssal peridotites uniquely preserve

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

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

154 Furthermore, multisite compilation of osmium isotopes, Pacific volcanic ash beds, and paleonto

155 Osmium isotopic analyses of picritic lavas from Hawaii s

156 However, the osmium isotopic compositions of abyssal peridotites and

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

158 k between DT volcanism as recorded in marine osmium isotopic data and global climate change documente

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

160 Osmium isotopic data on peridotite xenoliths from the Ke

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

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

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

164 idging hydrogen atom interacts directly with osmium; it exchanges rapidly with the other two methyl C

165 We demonstrate the utility of osmium-labeled beads for signal spillover compensation i

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

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

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

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

170 tly less stable than the previously reported osmium-methane complex [eta(5)-CpOs(CO)(2)(CH(4))][Al(OC

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

172 (OCP) transfers a P atom to an electrophilic osmium nitride complex to form a metal-bound P=N ligand.

173 Complexation with osmium of quinoxalinone derivatives with benzimidazole o

174 (= 1.3), indicating a terrestrial origin of osmium (Os) in these samples.

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

176 Here we show using osmium (Os) isotopes that the 2021 Fagradalsfjall lavas

177 pose of this work was to develop an accurate osmium (Os) solution standard that is traceable to the I

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

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

180 phile elements (HSEs; namely, gold, iridium, osmium, palladium, platinum, rhenium, rhodium and ruthen

181 Using deep-red or near-infrared light and an osmium photocatalyst, we demonstrate an enhanced scope o

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

183 The device comprises a lactate oxidase and osmium-polymer -based anode connected to a coplanar 3 x

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

185 , rope-like fibres; K, fibril-like clumps of osmium positivity; L, cellular debris along and within n

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

187 Osmium reaction precipitates were observed in the degrad

188 n probing future applications of derivatized osmium reagents.

189 Osmium redox polymer-mediated glucose/O(2) enzymatic bio

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

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

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

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

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

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

196 f SO(2) and CO(2) during the observed marine osmium shifts with diverse effects on the global climate

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

198 ut shrinks in potassium ferrocyanide reduced osmium solution.

199 or osmium tetroxide, clears the tissue after osmium staining and that the tissue expands in osmium te

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

201 design criteria for a class of ruthenium and osmium sulfoxide complexes that undergo phototriggered i

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

203 g technology, probes are tagged with a bulky Osmium tag (Osmium tetroxide 2,2'-bipyridine), in a way

204 Due to the presence of the bulky Osmium tag, probes traverse more slowly, produce multipl

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

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

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

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

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

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

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

212 We have explored one specific tag, the Osmium tetroxide 2,2'-bipyridine (OsBp), which conjugate

213 , probes are tagged with a bulky Osmium tag (Osmium tetroxide 2,2'-bipyridine), in a way that preserv

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

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

216 We previously demonstrated that osmium tetroxide and TMEDA generate stable crystalline a

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

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

219 oride insensitive and tolerates aldehyde and osmium tetroxide fixation better than common fluorescent

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

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

222 Osmium tetroxide is reduced by molecular hydrogen in the

223 In this study, we introduce stable osmium tetroxide labeling as a universal approach for ge

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

225 lation of trinor-18a-olean-17(22)-ene 2 with osmium tetroxide led to diol 9.

226 Osmium tetroxide mediated dihydroxylation of a range of

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

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

229 With osmium tetroxide postfixation, the lipid bilayer was mai

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

231 mium staining and that the tissue expands in osmium tetroxide solution, but shrinks in potassium ferr

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

233 m ferrocyanide, a classic reducing agent for osmium tetroxide, clears the tissue after osmium stainin

234 3% glutaraldehyde, postfixed in 1% buffered osmium tetroxide, dehydrated, and embeded in araldite.

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

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

237 1w cells were not distinctively stained with osmium tetroxide, which interacts specifically with UFA

238 light-microscopic cross-sectional images of osmium tetroxide-stained rat nerves including various ax

239 st efficiently accomplished by reaction with osmium tetroxide.

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

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

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

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

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

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

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

247 The alkane ligands bind to osmium through one methyl group, which exchanges slowly

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

249 ey were labeled with an electrochemical tag (osmium(VI) complex), which binds only to glycans, increa

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

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

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

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

254 e interactions and Os-specific vibrations in osmium(VI) species and is thus applicable for such measu

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