ライフサイエンスコーパス: hafnium

1 had no effect on central Pacific deep-water hafnium.

2 hese heterogeneities, caused by the decay of hafnium-182 in mantle domains with high hafnium/tungsten

3 e specifically, we present evidence that the hafnium alkyl cation initially undergoes monomer inserti

4 ent study reveals that simple zirconium- and hafnium-amido complexes are highly efficient catalysts f

5 The hafnium analogue of 1, Cp*(Cl)Hf(2,3-dimethylbutadiene)

6 Here we present hafnium and lead isotope data from across the Indian-Pac

7 We identified systematic variations in hafnium and oxygen isotopes in zircons of different ages

8 re we report the first study that integrates hafnium and oxygen isotopes, all measured in situ on the

9 (pH>10), however, is unknown, as studies of hafnium aqueous chemistry have been limited to acid.

10 UiO-67 occurs through the cleavage of strong hafnium-carboxylate bonds and is effected under mild con

11 apidly to discover the new amide-ether based hafnium catalyst [eta(2)-(N,O)[bond](2-MeO[bond]C(6)H(4)

12 gated the olefin polymerization mechanism of hafnium catalysts supported by a pyridyl-amide ligand wi

13 Group transfer between hafnium centers was observed upon treatment with Me3SiCl

14 cterization of the first polynuclear hydroxo hafnium cluster isolated from base, [TMA]6 [Hf6 (mu-O2 )

15 zation of a series of cationic zirconium and hafnium complexes with alkyl substituents bearing beta-h

16 Here we show that an organometallic hafnium compound induces N(2) cleavage on the addition o

17 zations performed using selected amide-ether hafnium compounds confirmed the performance features of

18 We report a hafnium-containing MOF, hcp UiO-67(Hf), which is a ligan

19 n quantitative yield along with unidentified hafnium-containing species.

20 comprising a previously unstudied material, hafnium diboride, suggesting that refractory metallic ce

21 orous titanium dioxide (TiO(2)), ZrO(2), and hafnium dioxide (HfO(2)) in phosphopeptide enrichment an

22 High-temperature phases of hafnium dioxide have exceptionally high dielectric const

23 ns a new chapter in the aqueous chemistry of hafnium, exemplifying the concept of amphoteric clusters

24 formed on metal oxide surfaces and show that hafnium-gold chemistry is complementary and orthogonal t

25 We unlocked the plutonic archive through hafnium (Hf) and oxygen (O) isotope analysis of zoned zi

26 n metals, titanium (Ti), zirconium (Zr), and hafnium (Hf), of different concentrations (0-50 at.

27 The hafnium hydrostannyl complex CpCpHf(SnHMes(2))Cl (Cp = e

28 approximately 1440 million years, an epsilon-hafnium initial value of +7, and an epsilon-neodymium in

29 monolayers on gold is reported that employs hafnium ions as linkers between a phosphonate headgroup

30 us events than the exposed geology and their hafnium isotope ratios reflect the time since the source

31 Decoupled oxygen-hafnium isotope systematics suggest a complex source for

32 oproterozoic rift-margin strata are similar; hafnium isotopes of approximately 1.4-billion-year-old A

33 Significant fluctuations in hafnium isotopic composition occurred in the Eocene and

34 Hafnium isotopic compositions have remained approximatel

35 A Cenozoic record of hafnium isotopic compositions of central Pacific deep wa

36 High-precision hafnium isotopic data for lavas from several Hawaiian vo

37 ition of zircons, for which uranium-lead and hafnium isotopic data provide age constraints, is a key

38 theast Indian ridge (SEIR) display a bimodal hafnium isotopic distribution.

39 Hyperbolic lead-hafnium isotopic relations among Hawaiian basalts furthe

40 In this report, zirconium(IV)- and hafnium(IV)-bishydroxamic acid complexes were utilized i

41 Lutetium-hafnium (Lu-Hf) isotope data for ALH indicate an igneous

42 ation dislocation; the nanorod is reduced to hafnium on cooling.

43 t can be easily prepared by first patterning hafnium on the gold surface followed by alkanephosphonat

44 Hafnium oxide (HfO2) is a leading candidate to replace s

45 ransparent resistive memory (TRRAM) based on Hafnium oxide (HfO2) with excellent transparency, resist

46 SWCNTs to basic metal oxide surfaces (i.e., hafnium oxide (HfO2)).

47 The nanostructured hafnium oxide (nHfO2) was used as a model NMO.

48 idth measurements of the ion current through hafnium oxide and silicon nitride nanopores allow the an

49 rcapacitor effect with the high-k dielectric hafnium oxide is demonstrated that allows modulation fro

50 metal oxide-based high-k materials, such as hafnium oxide, in the pores was achieved.

51 Here we report a new hafnium oxide-organic self-assembled nanodielectric (Hf-

52 old substrates that had been pretreated with hafnium oxychloride are representative of this new class

53 Selective dissolution of hafnium-peroxo-sulfate films in aqueous tetramethylammon

54 The binary zirconium and hafnium polyazides [PPh4 ]2 [M(N3 )6 ] (M=Zr, Hf) were o

55 d to 1-octene polymerization as catalyzed by hafnium-pyridyl amido precursors enables quantification

56 in bromobenzene-d5 yielded the zwitterionic hafnium silyl complex [CpCpHfSi(SiMe3)3][MeB(C6F5)3] (7)

57 tatively produced the corresponding cationic hafnium silyl complexes 12-14.

58 Hafnium speciation under these basic conditions (pH>10),

59 The open coordination site at hafnium suggested the possibility of functionalization o

60 n fact be introduced and controlled within a hafnium terephthalate MOF.

61 Here we show that palladium-capped hafnium thin films show a highly reproducible change in

62 Some hafnium-tungsten isotope data, however, require that Ves

63 rements of tungsten isotope compositions and hafnium-tungsten ratios of several meteorites.

64 Characterization of the hafnium-tungsten systematics ((182)Hf decaying to (182)W

65 y of hafnium-182 in mantle domains with high hafnium/tungsten ratios, were created during the first ~

66 as a function of its hydrogen content makes hafnium well-suited for use as a hydrogen detection mate

67 steep-slope transistor with a ferroelectric hafnium zirconium oxide layer in the gate dielectric sta