Generalized Photon Added and Subtracted f-Deformed Displaced Fock States

In this paper, by making use of the nonlinear coherent states approach, the generalized photon added and subtracted f-deformed displaced Fock states are introduced. In other words, a natural link between photon added and subtracted displaced Fock states and nonlinear coherent states associated with nonlinear oscillator algebra is obtained. It is found that various kinds of nonclassical states can be generated by adopting appropriately controlling parameters in both linear and nonlinear regimes. Moreover, examining some of the most nonclassical properties such as Mandel's Q parameter, different types of squeezing, namely, quadrature, amplitude–squared and phase entropic squeezing, and Vogel's characteristic function, the nonclassicality features of the considered quantum states of interest are studied. Furthermore, to obtain the degree of quantum coherence, the relative entropy of coherence is investigated. Indeed, the nonclassicality aspects of the states obtained have been numerically studied to understand the roles of deformation functions, photons added and subtracted, and photon number occupied in the Fock state on physical properties. It is demonstrated that the depth and the domain of the nonclassicality features of the system can properly be controlled by selecting the suitable parameters.     

附加质量变化率在航行体出水过程中的影响研究

航行体出水运动过程中,附加质量逐渐减小,在一些研究其出水运动的模型中,只考虑了随状态变化的附加质量值,而没有充分考虑附加质量的变化过程。本文通过建立航行体出水运动物理模型和对航行体出水过程的受力分析,构建了出水过程的动力学方程。为了更加准确模拟航行体出水情况,在进行理想流体作用力求解时,引入附加质量变化率研究附加质量在出水过程中的变化以及对出水过程的影响。通过对数学模型的仿真分析表明,在计算模型中考虑附加质量变化率能显著提高模型的计算精度。     

CO2催化转化为高附加值燃料：现状、挑战及其未来方向

The electrochemical reduction of CO2 into liquid fuels especially coupling with the intermittent renewable electricity offers a promising means of storing electricity in chemical form, which reduc‐es the dependence on fossil fuels and mitigates the negative impact of anthropogenic CO2 emissions on the planet. Although converting CO2 to fuels is not in itself a new concept, the field has not sub‐stantially advanced in the last 30 years primarily because of the challenge of discovery of structural electrocatalysts and the development of membrane architectures for efficient collection of reactants and separation of products. This overview summarizes recent advances in catalytic conversion of CO2 and presents the challenges and future directions in producing value‐added fuels.     

Development of determination method of trace nickel in natural water by ID-oxygen added nitrogen-MIP-MS with direct measurement of liquid–liquid extracted organic phase

This work introduces the development of a novel determination method of trace nickel (ng l^–1 level) in natural water samples. Nickel in the water samples is liquid–liquid extracted into methyl isobutyl ketone (MIBK) as nickel-diethyldithiocarbamate (DDTC) complex, and isotope dilution-oxygen added nitrogen-microwave induced plasma mass spectrometry (ID-oxygen added nitrogen-MIP-MS) is conducted by direct measurement of the liquid–liquid extracted organic MIBK phase. The accuracy of the proposed method was confirmed by analysing certified reference materials (NRC NASS-5 seawater, NRC SLRS-3 riverine water and NRC SLRS-4 river water), and the analytical results obtained were in good agreement with the certified values. The detection limit for nickel is 1.3?ng?l^?1 when the water sample is 50 times concentrated. The precision as RSD is <4%. The proposed method was applied to clarify the concentration-depth vertical profiles of nickel in Lake Mashu, Japan, as the Baseline Station of the United Nations GEMS/Water (Global Environment Monitoring System/Water) Programme.     

Lattice variation and thermal parameters of gel grown KDP crystals added with some ammonium compounds

Pure and impurity added (with NH₄Cl, NH₄NO₃, NH₄H₂PO₄, and (NH₄)₂SO₄) KDP single crystals were grown by the gel method using silica gels. X-ray diffraction data were collected for powder samples and used for the estimation of lattice variation and thermal parameters like Debye-Waller factor, mean-square amplitude of vibration, Debye temperature and Debye frequency. The thermal parameters do not vary in a particular order with respect to impurity concentration. The results obtained are reported and discussed.     

船舶在进出船厢运动中的附加质量的计算

采用三维有限元方法，计算船在进出船厢运动中的附加质量。文中对单圆柱体在无限域和半无限域中运动的附加质量及双圆柱体同心放置时内圆柱运动的附加质量分别进行了计算，计算值与理论值吻合很好；对船在进出船厢运动中的附加质量做了大量的计算，结果表明：随着船与船厢侧壁间距的减小，船的附加质量系数增大；随着船厢中水深的减小，船的附加质量系数增大，随着船离船厢封闭端的距离的减小，附加质量系数增大。     

变速运动颗粒所受非恒定作用力分析

本文利用典型函数试验法对变速运动颗粒所受非恒定作用力（Ｂａｓｓｅｔ力和附加质量力）进行了深入分析和比较，结果表明：Ｂａｓｓｅｔ力对重质颗粒运动的影响很大，不能忽略；对于轻质颗粒，则以附加质量力的作用为主，Ｂａｓｓｅｔ力可忽略不计．     

Biomaterials from beer manufacture waste for bone growth scaffolds

Abstract

Agricultural wastes are a source of renewable raw materials (RRM), with structures that can be tailored for the use envisaged. Here, they have proved to be good replacement candidates for use as biomaterials for the growth of osteoblasts in bone replacement therapies. Their preparation is more cost effective than that of materials presently in use with the added bonus of converting a low-cost waste into a value-added product. Due to their origin these solids are ecomaterials.

In this study, several techniques, including X-ray diffraction (XRD), chemical analysis, mercury intrusion porosimetry (MIP), scanning electron microscopy (SEM), and bioassays, were used to compare the biocompatibility and cell growth of scaffolds produced from beer bagasse, a waste material from beer production, with a control sample used in bone and dental regenerative processes.     

Experimental determination of the dynamic characteristics of a system of conical shells with added masses

A technique and results of experimental determination of vibrational stresses in a system of two truncated conical shells joined by three thin plates are presented. An analysis of the data obtained shows that the stress peaks near the added point mass at resonance __________ Translated from Prikladnaya Mekhanika, Vol. 43, No. 9, pp. 93–97, September 2007.