The aim of the study was to explore the coping strategy and the effects of self-efficacy of Chinese undergraduate nursing students when they face the stress in clinical practice. Convenience sampling was used to recruit undergraduate nursing students in Mainland China who have practiced 3 months in hospitals in their final college year. Self-report questionnaires including demographics, Perceived Stress Scale, coping behaviour inventory and Generalized Self-Efficacy Scale were collected. The results showed that during clinical practice, assignments and workload were the most common stress to students; transference was the most frequently used coping strategy by students. Self-efficacy not only had a positive main effect in predicting the frequency of use of staying optimistic and problem solving strategies but also moderated the effects of stress from taking care of patients on transference strategy, as well as stress from assignments and workload on problem solving strategy. It is essential to bolster the students' self-efficacy to reduce stress and adopt positively the coping strategies during clinical practice.

Spin excitations of magnetic thin films are the founding element for novel transport concepts in spintronics, magnonics, and magnetic devices in general. While spin dynamics have been extensively studied in bulk materials, their behaviour in mesoscopic films is less known due to experimental limitations. Here, we employ Resonant Inelastic X-Ray Scattering to investigate the spin excitation spectrum in mesoscopic Fe films, from bulk-like down to 3 unit cells thick. In bulk-like samples, we find isotropic, dispersive ferromagnons consistent with the dispersion observed by neutron scattering in bulk single crystals. As the thickness is reduced, these ferromagnons survive and evolve anisotropically: renormalising to lower energies along the out-of-plane direction while retaining their dispersion in the in-plane direction. This thickness dependence is captured by simple Heisenberg model calculations accounting for the confinement in the out-of-plane direction through the loss of Fe bonds. Our findings highlight the effects of mesoscopic scaling on spin dynamics and identify thickness as a knob for fine-tuning and controlling magnetic properties in films.

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The crystal structure, photocatalytic activity, and ferromagnetic properties of Sm-substituted (Bi1−xSmxFeO3, x = 0.05, 0.10, 0.15, 0.20) nanoparticles were systematically investigated within the entire Sm substitution region. The morphotropic phase boundary (MPB) consisting of a rhombohedral phase, orthorhombic interim phase (Pna21), and orthorhombic phase with 0.1 ≤ x ≤ 0.2 is constructed and confirmed by x-ray diffraction and Raman spectra with new vibration modes at ∼310 cm−1. The photocatalytic activity and ferromagnetism are improved around the MPB region (x = 0.10). Meanwhile, the wasp-waisted hysteresis loops are present around the MPB region. Wasp-waisted hysteresis loops have the features of low hysteresis loss in low magnetic fields and are helpful in designing some multiferroic devices.

Polyaniline/TiO2−SiO2 composites were prepared by an in situ chemical oxidation polymerization approach in the presence of hybrid TiO2−SiO2 fillers. The obtained polyaniline/TiO2−SiO2 composites were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectrometer (FTIR), X‐ray diffraction (XRD), thermogravimetry (TG), and current−voltage (I−V) measurements. SEM picture shows a variation in morphology of polyaniline (PANI) from fiber shape to relatively regular particle shape with increasing TiO2−SiO2 contents in the composites. The floccule‐like structures were observed by high resolution TEM, which may help improve the efficiency of conductive network. SEM, XRD, TG, and FTIR spectra all reveal that a relatively strong interaction exist between TiO2−SiO2 and PANI. The I−V characteristics in such composites indicate that the charge transport is mainly governed by the space charge effects, which occurs at the interface between the conducting PANI and TiO2−SiO2. Meanwhile, PANI/TiO2−SiO2 composites exhibit significant increase in conductivity than PANI/TiO2 or PANI/SiO2. The reasons about high conductivity of PANI/TiO2−SiO2 have also been discussed. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 2288–2295, 2013

Generation of visible photons by upconverting materials under excitation by the near-infrared part of sunlight is very attractive for complete utilization of solar energy. Visible upconversion luminescence is efficiently generated in BaCl 2 :Ln 3+ (Ho 3+ or Pr 3+ ) particles via excitation with broad band near-infrared part of sunlight. We observed greatly enhanced photocurrent response from the thin-film hydrogenated amorphous silicon solar cell covered with the upconversion layer of BaCl 2 :Ho 3+ phosphor, which demonstrates a prospective application for near-infrared photoresponse devices.

ceramics were prepared and compared to reveal the effects of Ho and Ti codoping in BiFeO 3 . X-ray diffraction indicated that both ceramics had a high rhombohedral perovskite phase content, and microstructural analyses showed that the grains of the Bi 0.9 Ho 0.1 Fe 0.9 Ti 0.05 O 3 ceramics were much smaller than those of Bi 0.9 Ho 0.1 Fe 0.95 O 3 . An electrical resistivity of more than 1 × 10 14 Ω•cm at room temperature, and a magnetic hysteresis loop with a remnant magnetization 2M r of ∼ 0.485 emu/g were obtained for Bi 0.9 Ho 0.1 Fe 0.9 Ti 0.05 O 3 ; both were much higher than those of Bi 0.9 Ho 0.1 Fe 0.95 O 3 . Changes in the defect subsystem of BiFeO 3 induced by Fe-deficiency and (Ho,Ti) codoping are proposed as being responsible for the improvement in the properties.