[en] The reservoir memory effects can lead to information backflow and recurrence of the previously lost quantum correlations. We establish connections between the direction of information flow and variation of the geometric quantum discords (GQDs) measured respectively by the trace distance, the Hellinger distance, and the Bures distance for two qubits subjecting to the bosonic structured reservoirs, and unveil their dependence on a factor whose derivative signifies the (non-)Markovianity of the dynamics. By considering the reservoirs with Lorentzian and Ohmic-like spectra, we further demonstrated that the non-Markovianity induced by the backflow of information from the reservoirs to the system enhances the GQDs in most of the parameter regions. This highlights the potential of non-Markovianity as a resource for protecting the GQDs. -- Highlights: •Dependence of GQDs on a factor determined by spectrum of the structured reservoir. •Connection between the direction of information flow and variation of the GQDs. •Non-Markovianity with the backflow of information enhances GQDs in a wide region. •The GQDs are enhanced with the information loss in a very narrow region.

[en] The characteristics are investigated of a transient grating induced by laser in glasses doped with CdSSe semiconductor and the nonlinear response time of the material is obtained. Also the properties of photoluminescence of the glasses are studied and a blue shift in luminescence spectra with increasing intensity of the input beam is observed. It is assumed that the nonlinearity of the material is due to band filling in semiconductor microcrystallites. (author)

[en] The effective separation coefficients (ESC) for three component systems of rare earths such as A,B,C (A-hard extractable component, C-easily extractable component, B- the middle component) have been studied. Methods which involve the use of ESC to determine the extreme values of total extraction ratio for the separation processes of three component system of are earths have been proposed. 3 refs.; 4 tabs

[en] A series of single-phase warm white light emitting CaLa_2−x−y(MoO₄)₄: xDy³⁺, yEu³⁺ phosphors were synthesized by a typical sol–gel method. X-ray diffraction (XRD) analysis reveals that the crystal structures of the samples are matched well with the tetragonal CaMoO₄. Upon ultraviolet (UV) light radiation, the Dy³⁺ or Eu³⁺ ions singly activated CaLa₂(MoO₄)₄ phosphors exhibit corresponding emissions originated from the f–f transitions of Dy³⁺ or Eu³⁺ ions. Under near ultraviolet (n-UV) light excitation, in the Dy³⁺ and Eu³⁺ ions co-doped samples, the energy transfer (ET) phenomenon from Dy³⁺ to Eu³⁺ ions can be observed and has been demonstrated to be a quadrupole–quadrupole interaction mechanism. The emission color of CaLa_1.98−y(MoO₄)₄: 0.02Dy³⁺, yEu³⁺ samples can be tuned from cool to warm white light by adjusting the concentration of Eu³⁺ ions. In addition, it can be found that CaLa_1.974(MoO₄)₄: 0.02Dy³⁺, 0.006Eu³⁺ samples emit bright white light with the CIE coordinate of (0.348, 0.313) and the color temperature of 5087 K, which is very close to the standard white light. All the results demonstrate that the as-synthesized phosphors have great potential applications in the field of n-UV white light emitting diodes (WLEDs).

[en] In this study, we investigated the synthesis of CuO microrods by simple calcination of copper-based coordination polymer particles (Cu-CPPs) at high temperature in air. The photocatalytic activity of the CuO microrods was tested by the decomposition of aqueous solution of RhB, which was completely decomposed by irradiation with light. To analyze the relationship of metal ions and ligands in the Cu-CPPs, the single crystal of [Cu(terpyOH)₂]∙(HBTC)∙2H₂O (1) (terpyOH=4′-hydroxy-2,2′:6′,2″-terpyridine, BTC=1,3,5-benzene tricarboxylate) was first prepared and characterized by X-ray single crystal structural analysis. A variety of hydrogen bonds constructing the 3D complex structure in [Cu(terpyOH)₂]∙(HBTC)∙2H₂O (1) were observed. - Graphical abstract: Demonstrating a general method to synthesize CuO microrods via simple calcination of Cu-CPPs and Cu(II) coordination modes from a novel complex of [Cu(terpyOH)₂]∙(HBTC)·2H₂O constructed by hydrogen bonding. Display Omitted - Highlights: • The formation of microrods CuO from thermal treatment of Cu-CPPs through an “escape-by-crafty-scheme” strategy has been studied. • Determination of Cu(II) coordination modes in Cu-CPPs from a novel complex of [Cu(terpyOH)₂]∙(HBTC) 2H₂O. • Invested the behave of hydrogen bonding to construct the 3D complex structure. • Commendable photodegradation performance was observed

[en] The hardening and softening phenomena during torsion deformation are studied based on the Taylor dislocation model for pure titanium. The hardening and softening phenomena are observed through the hardness analysis during micro-indentation test and micro-hardness test. Besides, the variations of indentation size also verify the existence of hardening and softening phenomena during torsion. The variations of geometric necessary dislocations (GNDs) and statistic store dislocations (SSDs) state that the positions of high dislocation density and low dislocation density correspond to the positions of hardening and softening. The results from the microstructure, grain boundaries evolution and twins analysis indicate the twins play an important role in appearance of hardening and softening phenomena. The appearance of hardening and softening phenomena are attributed to the combination of different slip systems and twinning systems combining with the Schmid Factor (SF) analysis and the transmission electron microscope (TEM). The appearance of hardening and softening phenomena can be explained by the Taylor dislocation theory based on TEM analysis. - Highlights: • The phenomena can be characterized by Taylor dislocation model. • The variation of GNDs leads to the phenomena. • The phenomena are proved by micro-hardness, indentation hardness. • The {10-12} twin and {11-24} twin play an important role in the phenomena.

[en] Textured diamond films were deposited on (100) Si substrates via microwave plasma CVD (MWCVD) with bias-enhanced nucleation or without substrate bias. The samples were identified by means of scanning electron microscopy (SEM) and X ray diffraction (XRD) to be textured. The nucleation and growth process of textured diamond films were investigated, the mechanism of nucleation and growth were discussed

[en] The results of the mechanical properties, microstructure and fracture analysis of the pure titanium deformed by positive-torsion (PT) and positive-negative-torsion (PNT) are investigated by uniaxial tensile (UT) test, micro-indentation (MI) test, optical microscope (OM), transmission electron microscope (TEM) and scanning electron microscope (SEM). The UT test indicates that the strength increases obviously with the increase of torsion radian during PT. However, the strength firstly increases quickly, and then tends to steady with the increase of deformation during PNT. The similar phenomena are also shown through MI hardness analysis. The results from geometrically necessary dislocations (GNDs) and statistically stored dislocations (SSDs) indicate that the dislocation density varies differently with the increase of deformation during PT and PNT. OM observation shows the grains are elongated and large numbers of deformation twins are observed during PT while the equiaxial grains are always presented during PNT. The variations of dislocation density during PT and PNT are verified by TEM. Besides, quantities of subgrains (SGs) are observed owing to the accumulated larger plastic strain during PNT while large numbers of deformation twins intersect with each other during PT. The fracture analysis indicates that large numbers of micro-voids distribute non-uniformly on fracture surface of sample twisted by PNT. However, the characteristics of ductile and brittle fracture are observed on fracture surface of sample twisted by PT.

[en] The long fuel cycle will be implemented in Tianwan Nuclear Power Station, and the design basis accident needs to be re-analyzed since the change of core design. The large break LOCA was analyzed in the paper. Based on the input data and calculation assumption, the most conservative calculated case was obtained through the conservative analysis of the axial power distribution and the ECCS. It is shown that the accept criteria are satisfied in the large break LOCA on long fuel cycle, and the safety margin of the core design is large enough. (authors)

[en] The reaction kinetic processes of species produced in a pulsed TEA CO₂ laser induced silane plasma were studied with the time-resolved OES. It is showed that the time position of main peaks for different fragments' characteristic lines are appreciably different. The reaction kinetic processes are discussed based on the results. By comparing the time evolution of the lines of the fragments and considering the other results of OES, the authors infer that the final reaction channel of the laser-induced silane plasma is a Si producing channel