Results 41 to 50 of about 36,268 (249)

Evidence of s-wave pairing symmetry in layered superconductor Li$_{0.68}$NbO$_2$ from the specific heat measurement

, 2006
A high quality superconducting Li$_{0.68}$NbO$_2$ polycrystalline sample was synthesized by deintercalation of Li ions from Li$_{0.93}$NbO$_2$. The field dependent resistivity and specific heat were measured down to 0.5 K. The upper critical field $H_{c2}
A. P. Tyutyunnik, D. G. Kellerman, D. Jin, G. T. Liu, J. B. Ketterson, J. L. Luo, J. L. Luo, N. L. Wang, T. Xiang, Y. Iye, Y. Q. Guo, Z. Li   +11 more
core   +1 more source

Viscosity-temperature relationships in the system Na2Si2O5-Na4Al2O5 [PDF]

, 1986
The viscosity-temperature relationships of five melts on the join Na2Si2O2-Na4Al2O5 (5, 10, 20, 30 and 40 mole percent Na4Al2O5) have been measured in air, at 1 atm and 1000–1350°C with a concentric cylinder viscometer.
Dingwell, Donald B.
core   +1 more source

1,4‐Digermacyclopenta‐1,3‐diene: Continuous Cyclic σ*–π Delocalization Enables Aromatic Stabilization in a Heavy‐Element 4π System

Angewandte Chemie, EarlyView.
A five‐membered digermacycle exhibits an unusual 4π electron delocalization enabled by σ*(Ge–C)–π coupling within a nearly planar framework. Combined experimental and theoretical analyses reveal a continuous cyclic delocalization pathway, highlighting σ*–π interactions as a design principle for aromatic stabilization beyond classical π‐conjugated ...
Daichi Uchida, Hiroko Yamada, Yoshiyuki Mizuhata   +2 more
wiley   +2 more sources

Simultaneous aluminum, silicon, and sodium coordination changes in 6 GPa sodium aluminosilicate glasses [PDF]

, 2009
We present the first direct observation of high-coordinated Si and Al occurring together in a series of high-pressure sodium aluminosilicate glasses, quenched from melts at 6 GPa.
Asimow, Paul D., Kelsey, Kimberly E., Mosenfelder, Jed L., Stebbins, Jonathan F.   +3 more
core   +1 more source

The Reactivity of Bispidine Ligand Based Iron(IV) and Iron(V) Oxido Species for the Demethylation of Acetic Acid. [PDF]

J Comput Chem
In agreement with experiment, DFT shows that high‐valent iron bispidines readily react with acetic acid by HAA (hydrogen atom abstraction) to produce C1 products in various oxidation states. ABSTRACT The high valent bispidine iron‐oxido complexes LFeIV═O and LFeV═O show exceptionally high reactivity for C–H abstraction reactions.
Velmurugan G, Comba P.
europepmc   +2 more sources

Electronic signature of the vacancy ordering in NbO (Nb3O3)

, 2017
We investigated the electronic structure of the vacancy-ordered 4d-transition metal monoxide NbO (Nb3O3) using angle-integrated soft- and hard-x-ray photoelectron spectroscopy as well as ultra-violet angle-resolved photoelectron spectroscopy.
Altendorf, S. G., Chen, C. T., Efimenko, A. K., Hoefer, K., Hollmann, N., Hsieh, H. H., Hu, Z., Kasinathan, D., Komarek, A. C., Liao, Y. F., Lin, H. -J., Nugroho, A. A., Rata, A. D., Takegami, D., Tjeng, L. H., Tsuei, K. -D., Weinen, J., Wolff, K. K.   +17 more
core   +1 more source

Fabrication and characterizations of proton-exchanged LiNbO3 waveguides fabricated by inductively coupled plasma technique [PDF]

, 2006
This Letter reports the use of an inductively coupled plasma technique for fabrication of proton-exchanged (PE) LiNbO3 (LN) waveguides. Planar and stripe waveguides have been formed in Y-cut LN which are difficult to obtain with the conventional molten ...
Hallam, K. R., Heard, P. J., Jiang, Q., Ren, Z., Varrazza, R., Wotherspoon, Alex, Yu, Siyuan   +6 more
core   +1 more source

Structure of Imidazolium-N-phthalolylglycinate Salt Hydrate: Combined Experimental and Quantum Chemical Calculations Studies

Crystals, 2020
An organic supramolecular salt hydrate (imidazolium:N-phthalolylglycinate:H2O; IM+-NPG−-HYD) has been examined for its charge-transfer (CT) characteristics. Accordingly, IM+−NPG−−HYD has been characterized thoroughly using various
Mohammad Usman, Rais Ahmad Khan, Mohammad H. Jaafar, Ali Alsalme, Sartaj Tabassum   +4 more
doaj   +1 more source

Adsorption behavior of the Al- and Ga-doped B12N12 nanocages on COn (n=1, 2) and HnX (n=2, 3 and X=O, N): A comparative study [PDF]

Chemical Review and Letters, 2019
In this work, density functional theory (DFT) calculations at the M06-2X/6-31+G* level are performed to the adsorption of COn (n=1, 2) and HnX (n=2, 3 and X=O, N)molecules onto pristine as well as Al- and Ga-doped B12N12 nanocages. We study the effect of
Hwda Ghafur Rauf, Soma Majedi, Evan Abdulkareem Mahmood, Mitra Sofi   +3 more
doaj   +1 more source

Frequency Variation of the Kilohertz Quasi-periodic Oscillations and the Flux of the Band-limited Noise in Scorpius X-1

, 2008
We study the kilohertz quasi-periodic oscillations (kHz QPOs) and the band-limited noise (BLN) in the 0.5--16 Hz range observed simultaneously on the horizontal branch (HB) and on the upper normal branch (NB) of the brightest neutron star Low-mass X-ray ...
Alpar, Belloni, Bradt, Di Salvo, Ford, Hasinger, Homan, Homan, Horák, Jonker, Kaaret, Kuulkers, Kuulkers, Lai, Lamb, Lewin, Li, Miller, Méndez, Psaltis, Shirakawa, Stella, Titarchuk, Titarchuk, Titarchuk, van der Klis, van der Klis, van der Klis, van der Klis, van-der Klis, Wenfei Yu, Wijnands, Wijnands, Xiaofeng Cao, Yu, Yu, Yu, Yu   +37 more
core   +1 more source