[en] The waste water treatment design of a uranium mine site in Fuzhou was optimized, including that the waste water was divided into high uranium concentration wastewater and low uranium concentration waste water and they were treated respectively, and the sludge after flocculating was treated. The problem of insufficient treatment capacity in the 721-15 waste water treatment station was solved by optimization and the pollution to the environment around the mine was avoided. (authors)

[en] Wastewater treatment process for 721-15 wastewater station and its parameters were described, statistics of the related costs were taken, and unit cost of wastewater treatment was analyzed. Aimed at existing problems, the optimized design scheme was proposed. (authors)

[en] Highlights: • Thermoelectric properties of ZnO nanowires are studied by combining first-principles calculation with Boltzmann Transport Equation. • The impacts of phase transformation on the thermoelectric performance of [0001] ZnO nanowires are explored. • The thermoelectric performance of the ZnO NWs is strongly dependent on the phase transformation. • For each wire, the power factor for H phase is larger than that of W phase, due to its smaller effective mass. • The maximum achievable value of figure of merit ZT at room temperature for H-phase is larger than that for W-phase (1.1 times). -- Abstract: Impacts of phase transformation from regular wurtzite phase to a graphitic polymorph hexagonal phase under tensile loading, on the thermoelectric properties of Zinc oxide nanowires (ZnO NWs), which is oriented in the [0001] direction, are studied by combining the first-principles simulation with one-dimensional (1D) Boltzmann transport equation (BTE). Our results show that this phase transformation has greatly influenced the thermoelectric properties of the ZnO NWs. We also find that the largest value of figure of merit ZT achieved for hexagonal phase (H phase) is larger than that for wurtzite phase (W phase) in the temperature range (200 K-1000 K), which means that hexagonal phase may become the optimal choice for ZnO nanowires in thermoelectric applications.

[en] In recent years, two-dimensional boron sheets (borophene) have been experimentally synthesized and theoretically proposed as a promising conductor or transistor with novel thermal and electronic properties. We first give a general survey of some notable electronic properties of borophene, including the superconductivity and topological characters. We then mainly review the basic approaches, thermal transport, as well as the mechanical properties of borophene with different configurations. This review gives a general understanding of some of the crucial thermal transport and electronic properties of borophene, and also calls for further experimental investigations and applications on certain scientific community. (topic review — thermal and thermoelectric properties of nano materials)

[en] Pancreatic cancer (PC) is characterized by insidious onset and high invasiveness, and early detection is the key to improving overall survival and prognosis of PC. Molecular imaging makes the early diagnosis of PC possible, and it can detect early abnormal changes at the molecular or cellular levels in the preliminary stage. In this review we provided a summary of technical principle of MR targeted molecular imaging and highlighted the application and progresses in selection of receptors and protein antigen biomarkers, and MR targeted molecular imaging based on Gd or magnetic nanoparticle (MNP) in the early diagnosis of PC. (authors)

[en] Extensive work has been done in the theory and the construction of compactly supported orthonormal wavelet bases of L²(R). Some of the most distinguished work was done by Daubechies, who constructed a whole family of such wavelet bases. In this paper, we construct a class of orthonormal wavelet bases by using the principle of Daubechies, and investigate the length of support and the regularity of these wavelet bases.

[en] Highlights: • Cisplatin-induced nephrotoxicity showed a circadian rhythm. • Cisplatin altered the clock genes expression in a tissue- and gene-specific manner. • Dbp was consistently suppressed in peripheral tissues after cisplatin treatment. Cisplatin is a platinum-based chemotherapy drug that is widely used to treat various types of malignancies. Although the involvement of circadian clock in cisplatin metabolism and excretion has been reported, the effect of cisplatin on circadian rhythm remains unclear. In the present study, we investigated the effects of cisplatin on clock genes expression in mouse peripheral tissues. Cisplatin induced severe nephrotoxicity, as revealed by the significant increase of blood urea nitrogen and serum creatinine levels. Moreover, cisplatin circadian time-dependently induced p21 expression in the liver, heart and kidney, with the highest increase during the dark phase. In addition, cisplatin altered the clock genes expression in the liver, heart and kidney in a tissue- and gene-specific manner. Interesting, the expression of D site of the albumin promoter binding protein (Dbp), a gene involved in detoxification and drug metabolism, was consistently suppressed in the liver, heart and kidney after cisplatin treatment, implying a role of DBP in the toxicity of cisplatin.

[en] Recent decades have seen tremendous progress in quantitative understanding of phonon transport, which is critical for the thermal management of various functional devices and the proper optimization of thermoelectric materials. In this work, using a first-principles based calculation combined with the non-equilibrium Green’s function and a phonon Boltzmann transport equation, we provide a systematic study of the phonon stability and phonon transport of a monolayer boron sheet with a honeycomb, graphene-like structure (graphene-like borophene) in both ballistic and diffusive regimes. For free-standing graphene-like borophene, phonon instabilities occur near the centre of the Brillouin zone, implying elastic instability. Investigation of the electronic structures shows that the phonon instability is due to the deficiency of electrons. Our first-principles results show that with net charge doping and in-plane tensile strain, graphene-like borophene becomes thermodynamically stable in ideal planar nature, because the bonding characteristic is modified. At room temperature, the ballistic thermal conductance of graphene-like borophene (7.14 nWK⁻¹ nm⁻²) is higher than that of graphene (4.1 nWK⁻¹ nm⁻²), due to high phonon transmission. However, its diffusive thermal conductivity is two orders of magnitude lower than graphene, because the phonon relaxation time is dramatically reduced compared with its carbon counterpart. Although the phonon group velocity and phonon anharmonicity are comparable with those of graphene, the suppressed phonon space results in dramatically strong phonon–phonon scattering. These thermal transport characteristics in both ballistic and diffusive regimes are of fundamental and technological relevance and provide guidance for applications of boron-based nanomaterials in which thermal conduction is the major concern. (paper)

[en] Sonodynamic therapy (SDT) is a promising non-invasive therapeutic modality with an extensive application prospect. Due to the engineerable nature of nanotechnology, nanosensitizers with predominant advantages of increased SDT efficacy and targeting specificity have attracted more and more research recently. In this review, we introduce the current investigations of nanosonosensitizers and focus on the potential strategies on nanoparticles-assisted sonosensitizers to enhance SDT efficacy. We extensively discuss the biomedical applications of ultrasound activated nanosonosensitizers in SDT and theranostics. (topical review)

[en] In this work, combining first-principles calculation and the phonon Boltzmann transport equation, we explored the diffusive thermal conductivity of diamond-like bi-layer graphene. The converged iterative solution provides high room temperature thermal conductivity of 2034 W mK⁻¹, significantly higher than other 2D materials. More interesting, the thermal conductivity calculated by relaxation time approximation is about 33% underestimated, revealing a remarkable phonon hydrodynamic transport characteristic. Significant strain dependence is reported, for example, under 5% tensile strain, room temperature thermal conductivity (1081 W mK⁻¹) of only about 50% of the strain-free sample, and under 20% strain, it reduces dramatically to only about 11% of the intrinsic one (226 W mK⁻¹). Unexpectedly, in addition to the remarkable reduction in the absolute value of thermal conductivity, tensile strain can impact the hydrodynamic significance. For example, under 5% strain, the underestimation of relaxation time approximation in thermal conductivity is reduced to 20%. Furthermore, using a non-equilibrium Green’s function calculation, high ballistic thermal conductance (2.95 GW m⁻² K^–1) is demonstrated, and the mean free path is predicted to be 700 nm at room temperature. The importance of the knowledge of phonon transport in diamond-like bi-layer graphene goes beyond fundamental physics owing to its relevance to thermal management applications due to the super-high thermal conduction. (paper)