نتایج جستجو برای: 27al and 35cl nqr
تعداد نتایج: 16827433 فیلتر نتایج به سال:
The 35C1-NQR spectrum of several derivatives of chloral, Cl3CCHO, was studied in the ranee 77 K ^ T Tm. By use of the spin echo double resonance technique a relative assignment of the resonances to different ClaC-groups within one crystallized compound was possible. The solid compounds studied are: High temperature phase of chloral hydrate, Cl3CCH(OH)2; parachloral, (Cl3CCHO)3, (aand ß-isomer);...
We report a study of the Mott insulator ${\mathrm{La}}_{2}{\mathrm{O}}_{3}{\mathrm{Fe}}_{2}{\mathrm{Se}}_{2}$ by means $^{139}\mathrm{La}$ nuclear quadrupole resonance (NQR). The NQR spectra evidence single La site in paramagnetic phase and two inequivalent sites, La1 La2, antiferromagnetic phase. These sites are characterized different couplings, indicative distinct lattice configurations segr...
Pure nano-Al13 and aggregates at various concentrations were prepared to examine the particle size effect of coagulation with inorganic polymer flocculant. The property and stability of various species formed were characterized using Infrared, 27Al-NMR, photo correlation spectroscopy (PCS), and Ferron assay. Results showed that concentration and temperature exhibited different roles on the stab...
Introduction: In recent years, the calcium-aluminum-rich inclusion (CAI) E60 from the Efremovka reduced CV3 chondrite has been used as an age anchor for the Al-Mg extinct chronometer (t1/2 ~0.73 Ma) since an internal Al-Mg isochron corresponding to a 26Al/27Al ratio of (4.63 ± 0.44) × 10−5 has been determined for it [1] and a highly precise 207Pb-206Pb age of 4567.11 ± 0.16 Ma has also been rep...
The main goal of this study is to understand, at the atomic level, chemical interactions occurring between an active phase, a FAU zeolite in case, and its binder during catalyst forming. This unit operation critical step scale up commercialization but has not received attention it deserves from academia. Herein, we present level insight into solid-state chemistry taking place extrusion process ...
In our previous paper, we tested the chiral (Kyushu) folding model for 12C+12C scattering, since profile function in Glauber mode is constructed system. We found that reliable reaction cross sections σR 30≲Elab≲100MeV and 250≲Elab≲400MeV. Accurate data are available 12C scattering on 9Be, 12C, 27Al targets 30≲Elab≲400MeV. determine matter radius rm(exp) of from accurate σR(exp), using Kyushu g-...
mp2 calculations with cc-pvtz basis set were used to analyze intermolecular interactions in f3cx···yli···nccn and f3cx···nccn···liy triads (x = cl, br; y = cn, nc) which are connected via halogen and lithium bonds. those complexes with the role of liy as halogen acceptor and lithium donor show cooperativity with energy values ranging between -1.97 and -2.92 kj mol-1. those complexes with simult...
In this research, the effects of HCN adsorption on the surface of the pristine, Ge, P, and GeP doped boron nitride nanotube (BNNTs) are investigated by using density function theory at the B3LYP/6–31G(d, p) level of theory. At the first step, we consider different configurations for adsorbing HCN molecule on the surface of BNNTs. The optimized models are used to calculate the structural, electr...
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