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Lithium-ion battery cathode materials of Mg doped Li1.2Mn0.6Ni0.2O2 were prepared by combustion synthesis. The phase structures and morphologies of the as-prepared samples were characterized by X-ray diffractometer, Raman spectroscopy and scanning electron microscope, respectively, and their electrochemical performance was measured. Results show that the as-prepared samples have better hexagonal layered structure, with spherical-like appearance. Through Mg2+ doping, the initial coulombic efficiency, cyclic stability and rate capacity are efficiently enhanced for the Li1.2Mn0.6Ni0.2O2 material. When the Mg2+ content is 0.02, the battery sample exhibits excellent electrochemical performance.

Scimitar syndrome (SS) is a rare entity with an incidence of approximately 1–3 in 200 000 people. It is typically characterized by complete or partial anomalous pulmonary venous drainage from the right lung into the systemic venous circulation, most commonly the inferior vena cava (IVC). For the first time, we report the diagnosis of SS in a fetus in utero using four‐dimensional (4D) spatiotemporal image correlation combined with high‐definition live flow rendering mode (STIC‐HD live flow). [ABSTRACT FROM AUTHOR]

In this paper, the influence on performance of radial straight blade hydraulic turbine is studied with radial meridional flow channel and mixed-flow meridional flow channel. Firstly, the theoretical models are suggested for radial straight blade hydraulic turbine. Secondly, runners are designed based on two different types of meridional flow channels. Finally, the numerical simulation is carried out for different schemes, while the performance and flow field are analyzed and compared. Results show that the two different schemes adapt to ultra-small discharge and head with large fluctuation. Moreover, the best numerical predicted efficiency is 81.4% for radial straight blade hydraulic turbine with the mixed-flow meridional flow channel, which is 1.8% more than the radial meridional flow channel. Meanwhile, with a larger conveyance capacity, the optimal efficiency is verified for the hydraulic turbine with mixed-flow meridional channel, and it can meet the needs of hydraulic energy recovery with ultra-small discharge. The conclusions serve as a reference in the design of hydraulic energy recovery turbine. [ABSTRACT FROM AUTHOR]

In this paper, we study the elastic properties of the entropy-stabilized oxide (Mg, Co, Ni, Cu, Zn)O using experimental and first principles techniques. Our measurements of the indentation modulus on grains with a wide range of crystallographic orientations of the entropy-stabilized oxide revealed a high degree of elastic isotropy at ambient conditions. First principles calculations predict mild elastic anisotropy for the paramagnetic structure, which decreases when the system is considered to be non-magnetic. When the antiferromagnetic state of CoO, CuO, and NiO is accounted for in the calculations, a slight increase in elastic anisotropy is observed, suggesting a coupling between magnetic ordering and the orientation dependent elastic properties. Furthermore, an examination of the local structure reveals that the isotropy is favored through local ionic distortions of Cu and Zn—due to their tendencies to form tenorite and wurtzite phases. The relationships between the elastic properties of the multicomponent oxide and those of its constituent binary oxides are reviewed. These insights open up new avenues for controlling isotropy for technological applications through tuning composition and structure in the entropy-stabilized oxide or the high-entropy compounds in general. [ABSTRACT FROM AUTHOR]

To meet the demands of white noise waves with different and higher energy spectral density, a new white noise wave generation method was proposed and a corresponding wave-making system controlled by a rotary valve was developed. The theoretical model of the new method was established, and the hydraulic transmission function of the wave-making system was solved. After the control parameters of the white noise waves in the wave-making system were obtained, the experiment tests were carried out to generate the white noise waves, and its energy spectral density was analyzed by Fourier analysis. The results show that white noise waves with different amplitudes have different energy spectral densities. And the energy spectral density of the generated waves is approximately a constant. Therefore, the present white noise wave generation method is feasible in marine engineering tests, and the wave with variable amplitude and higher energy spectral density can be generated. [ABSTRACT FROM AUTHOR]

Bemisia tabaci is a pest that poses a significant threat to the survival of Nicotiana tabacum and leads to decreased production and economic losses. However, it is still unknown whether proteomic changes occur in resistant N. tabacum in response to B. tabaci stresses. In the present study, iTRAQ was performed to unmask the regulating networks mediated by candidate proteins involved in resistance against B. tabaci. A total of 357 differentially accumulated proteins (DAPs) responsible for B. tabaci infestation were identified, including 178 upregulated and 179 downregulated proteins. The majority of DAPs were involved in the regulation of ROS production, cell expansion, citrate cycle (TCA cycle), photosynthesis, carbon fixation, and metabolic pathways. Moreover, the expression patterns of several genes encoding DAPs were validated by qRT-PCR. Our results indicate these proteins play a significant role in the resistance of N. tabacum against B. tabaci infestation. These findings also provide a valuable proteomic resource for the elucidation of the mechanism of resistance against B. tabaci. [ABSTRACT FROM AUTHOR]