Ma L.-F.,Central China Normal University |
Ma L.-F.,Kashgar Normal College |
Zhang J.-M.,Central China Normal University |
Huang G.-Q.,Central China Normal University |
And 3 more authors.
Molecular Biology Reports | Year: 2014
Low temperature, drought and salinity are major abiotic stresses that influence survival, productivity and geographical distribution of many important crops across the globe. The C-repeat/dehydration-responsive element binding transcription factors (CBF/DREB) are important proteins involved in response to abiotic stresses in plants. In this study, twenty-one CBF genes were identified in cotton (Gossypium hirsutum) by bioinformatic approach. The twenty-one CBF genes (named as GhCBF1 - GhCBF21) were characterized to encode proteins that share high similarity with those plant cold stress-related CBF proteins, which contain the classic AP2 domain of 58 amino acid residues. Phylogenetic analysis revealed that the isolated cotton CBF genes can be classified into 4 groups: GhCBF I, GhCBF II, GhCBF III and GhCBF IV. RT-PCR analysis indicated that GhCBF genes were up-regulated in cotton plants under cold stress. Furthermore, four GhCBF genes were up-regulated in cotton under salinity and drought treatments. Our data provided valuable information for further exploring the roles of the CBF genes in cotton development and in response to cold stress. © 2014 Springer Science+Business Media.
Yu Z.,Central China Normal University |
Liu S.,Central China Normal University |
Fang C.,Design Science |
Huang X.,Central China Normal University |
And 2 more authors.
Physica Scripta | Year: 2015
Single-/dual-/triple band metamaterial absorbers based on cut wire and square ring are discussed at microwave frequencies. The single-/dual-/triple band characteristics are realized by loading the cut wires in the square ring. The results indicate that the proposed metamaterial absorbers exhibit near-perfect impedance matching with free space and high absorbance of 99.50% at 4.70 GHz for single-band condition, and absorbance of 98.75% and 97.64% at 4.44 and 8.55 GHz, respectively, for dual-band condition. The triple band MMA can achieve the absorbance of 96.94%, 97.91% and 94.83% at 4.48 GHz, 7.81 GHz and 14.05 GHz, respectively. It also exhibits a wide range of angles of incidence for both TE and TM radiation. The physical mechanism of the absorptions is interpreted by the simulated surface current distributions and power-loss of the structures. Microwave experiments are performed to successfully realize these ideas, and measured results are in good agreement with the numerical results. © 2015 The Royal Swedish Academy of Sciences.
Wang J.,Kashgar Normal College |
Wang J.,Xinjiang Institute of Ecology and Geography |
Lu Z.,Xinjiang Institute of Ecology and Geography |
Song J.,Shenyang University
Shengtai Xuebao/ Acta Ecologica Sinica | Year: 2013
The phosphorus (P) changes in soil, dominant plant (Haloxylon ammodendron) and main insect (Julodis varioloris Pall) in desert area of Sinkiang were periodically measured, and the P transference between soil, plant and insect was investigated. The results shows that Carbon/ phosphorus (C/ P) in Haloxylon ammodendron leaves negatively correlated with available phosphorus in soil. The P and RNA content in Julodis varioloris Pall negatively correlated with C/ P in Haloxylon ammodendron leaves, while positively correlated with available phosphorus in soil. This indicates that the P and RNA in Julodis varioloris Pall were directly affected by C/ P in Haloxylon ammodendron leaves, and indirectly affected by available phosphorus in soil. The P dynamics between soil and plant may be an important factor that drive Julodis population change. The population of Julodis varioloris Pall was consistent with the changes of the P and RNA contents in natural environment. It demonstrates that the dynamic change of Julodis population in desert area can be estimated by the changes of the P and RNA contents. This gives us a new way to study insect population in microcosm.
Cao L.,Nankai University |
Cao L.,Kashgar Normal College |
Chen Z.,Nankai University |
Wu Q.,Nankai University |
And 2 more authors.
Guangxue Xuebao/Acta Optica Sinica | Year: 2014
Effect of annealing on the properties of time-resolved spectra of photoluminescence (PL) and the decay in PL intensity of black silicon processed by femtosecond laser pulses in air is studied. The motion of photon-generated carriers and the property of defects in black silicon after annealing have been analyzed. By fitting the PL decay profile with double exponential function, the probable mechanism of spectral change of black silicon due to annealing is given. The increase in PL intensity of black silicon after annealing is the result of the increased oxygen defects resulting from the radiative recombination rate of nonequilibrium carriers. A theory of thermal diffusion is put forward to explain the observation that the PL intensity of black silicon increases with the annealing temperature. The increasing time constants and the ratio of the slow decay process are attributed to the fact that some defects on the microstructured surface and within silicon material have been eliminated and restored by annealing that leads to the increasing of the surface bound state, thus reducing the density of nonradiative recombination centers. The ratio of radiative recombination increases, resulting in the increase in PL intensity of annealed black silicon. The best annealing condition for the PL of black silicon found is annealing at 800℃ for 30 min in vacuum. ©, 2015, Chinese Optical Society. All right reserved.
Li Q.,Nankai University |
Li Q.,Kashgar Normal College |
Cheng N.,Nankai University |
Zhang T.,Nankai University
Sheng li xue bao : [Acta physiologica Sinica] | Year: 2015
Neural oscillatory phenomenon generally exists in the nervous system through a dynamic form. It plays a very important role in the brain, especially in the higher cognitive activities, such as information processing, transfer and integration, consolidating memory and so on. Furthermore, the specific activity pattern of neural oscillations is often associated with cognitive functions and their alterations. Accordingly, how to quantitatively analyze the pattern of neural oscillations becomes one of the fundamental issues in the computational neuroscience. In this review, we addressed a variety of analytic algorithms, which are commonly employed in our recent studies to investigate the issues of neurobiology and cognitive science. In addition, we tried to classify these analytic algorithms by distinguishing their different metrics, synchronization and coupling modes. Finally, multidimensional analytic algorithms for potential application have also been discussed.