By obtaining an inequality of the weight coefficient, a strengthened HardyHilbert type inequality and its dual form are established.The strengthened equivalent forms are considered.
By using a weight function, a basic Hilbert-type integral inequality with a homogeneous kernel of -1-degree and the best constant factor is given. The equivalent form and the extended integral inequalities with multiple parameters are considered.
Actins are structural proteins widely distributed in eukaryotes. In plants, the actin cytoskeleton plays an essential role in many cellular processes including cell division and cytoplasmic streaming. Study of the ACTIN gene family is important for understanding the mechanism of these processes. In this study, bioinformatics analysis identified 20, 18 and 22 ACTIN genes respectively in arabidopsis, rice and poplar. A comprehensive overview of this gene family is presented, including chromosome distribution, gene structure, gene duplication, phylogeny, and conserved motifs. The plant ACTINs are organized into 12 subfamilies based on phylogenetic relationship. These results provide clues for study of gene family evolution, and serve as a solid base for future functional genomic studies of the ACTIN gene families in plants.
By analyzing the mechanism of oil-soluble viscosity reducer, we investigated the viscosity reduction effect of monomer (octadecyl acrylate, styrene, maleic anhydride), and synthesized a variety of oil-soluble copolymer as viscosity reducers. The results show that the product is better by the controlling the monomer ratio. When the monomer ratio was 6∶2∶1 and the concentration of viscosity reducer was 0.01%, the viscosity reduction rate is 40% or more, and stability of viscosity reduction effect is well.
A novel defected ground structure (DGS) is proposed and the effect of the defect parameters on its performances is presented. A lowpass filter is designed using the proposed DGS. Experimental results confirm that the lowpass filter can provide a very wide stopband with 20 dB bandgap, which is approximately 3.7 times of the cutoff frequency. Therefore the higher order harmonic responses are effectively suppressed. In addition, the highimpedance inductances are realized by using DGS so that highpower handling capability is improved.
Microphaseseparating behaviors of two typical star-diblock copolymer films have been investigated using the dissipative particle dynamics (DPD) technique. A series of ordered structures and corresponding phase diagrams have been obtained. Results show that, compared to (AxBy)4, the phase diagram of (Ax)4(By)4 is distinctly symmetric. It is easier to carry out phase-separating for the latter than for the former, similar to their behaviors in bulk. Additionally, it is easier for the island phase to appear in (AxBy)4 films under the same conditions. Some structures formed in bulk and film at the same composition fraction can correspond to each other to a certain extent, and one-dimension confinement can make these systems form more kinds of microphase-separating structures. Besides, both thinner film and stronger A-B repulsion can contribute to enhance the order of relevant structures.
Full three dimensional numerical simulations of centrifugal pump are carried out using ANSYS CFX11.0 under 2 operating conditions with 6 different impeller positions. The Reynolds-averaged Navier-Stokes equations are solved with a turbulence model of standard k-ε. The flow pattern is obtained. The head and hydraulic efficiency of the pump are computed. The results are compared with measured data and the unsteady results. Based on these, an analysis is made over the effect of impeller position on the steady calculation of centrifugal pump.
In this paper, an improved range-ree localization algorithm in wireless sensor networks is proposed, termed the variable elasticity spring imitate location algorithm. The hops to anchor nodes and average distance for a hop can be determined in the primarystep in order to get node initial positions, and then refine the positions with an iterative procedure by adopting physics imitate. Simulation results show that the algorithm outperforms the DVHop algorithm in the same anchor fraction and average connectivity.
A static allocation strategy of data-bits is proposed based on an experimental system of hundreds ternary optical computer. The main idea is to properly allocate data-bits to a single task. A static designation, grouping, attribute setup, and allocation process of data-bits are discussed. An example is introduced to demonstrate the allocation strategy of data-bits.
Soybean isoflavones were determined with a single-wave-length method, a three-wave-length method and HPLC. Singlewavelength method (y=7.431 7x-0.055 6,R2=0.999 8) and three-wave-length method (y=32.432x+0.048 8, R2=0.998 1) were used conveniently for total isoflavones. HPLC (genistin, y=1 828.6x-96.467, R2=0.996 4; daidzin, y=1 795.4x-420.67, R2=0.9953) was used for single isoflavone, which was complicated. Accuracy and precision of the three methods in a descending order is HPLC, three-wave-length method, and single-wave-length method.
