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Henan’an, China

Shi Q.,Henan Police College | Shi Y.,Sun Yat Sen University | Pan Y.,Sun Yat Sen University | Yue Z.,Shenzhen Key Research Laboratory of Detection Technology on Food Safety Technical Center for Food Inspection and Quarantine | And 3 more authors.
Microchimica Acta | Year: 2014

Methamphetamine (METH) is second only to marijuana as a widely used illicit drug. We are presenting a simple colorimetric assay for sensitive and visual detection of METH in human urine using a METH-specific aptamer as the recognition element and unmodified gold nanoparticles as indicators. The method is based on the finding that the presence of METH results in AuNPs solution’s color change from red to blue. Normally, aptamers attach to the surface of AuNPs and thereby increasing their resistance to NaCl-induced aggregation. If, however, the aptamer bind to METH via G-quartets, rapid salt induced aggregation occurs associated with the formation of a blue colored solution. Urinary METH can be quantified via this effect either visually or by measurement of the absorbance ratios at 660 and 525 nm, respectively. It works in the 2 μM to 10 μM concentration range with a detection limit at 0.82 μM. The method is fast and also works well in human urine. It is believed to represent a widely applicable aptamer-based detection scheme. © 2014, Springer-Verlag Wien. Source

Hao X.,Henan University of Science and Technology | Song Z.,Henan Police College | He J.,Henan University of Science and Technology | Li Q.,Henan University of Science and Technology | Yan H.,Henan University of Science and Technology
Plasma Science and Technology | Year: 2013

In this paper, using the intensity ratio between two spectral lines arising from the common lower level, we determine the optical depth of the solar atmosphere of CIV emission lines. The optical depth at the line center of the (1/2-3/2) component is calculated to be 0.05 at the center of the solar disc. By introducing a measured abundance of carbon and the results of ionization balance calculations, we estimate the line-of-sight physical thickness of the regions emitting CIV lines as Heff = 27 km, and we estimate the population density of the lower level to be 1.8 × 106 cm -3. Source

Shen Z.-Y.,Henan Police College
2014 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2014 | Year: 2014

In order to improve the image analysis ability in some practical applications, an image fusion algorithm was proposed. This algorithm combined information from multiple images of the same scene in pixel level. Firstly, a group of lifting morphological wavelets for image fusion was discussed. Then using one of the schemes, multiple images were shift in different direction and decomposed respectively. Next, the transform coefficients were processed according to certain fusion criterion and some fusion results could be obtained through inverse transform and inverse displacement. Finally, such fused images were filtered to be one image we need. Computer simulation shows this algorithm in morphological wavelet domain can fuse grayscale images or color images effectively. Compared with the conventional wavelet transform, it gets a more complete and clearer scene. © 2014 IEEE. Source

Liu H.,Henan Police College
Nanjing Li Gong Daxue Xuebao/Journal of Nanjing University of Science and Technology | Year: 2015

In order to prove the data possession in the distributed storage systems and keep low repair bandwidth, this paper proposes a provable data possession algorithm based on regenerating codes. This scheme uses the regenerating codes to prove the data possession, and to prove the data possession a second time in repair phase for resisting the pollution attacks. The theoretical analysis shows that this scheme not only maintains the advantages of regenerating codes on low repair bandwidth, but also reduces the computational overhead and saves storage space compared with the classical scheme. Security proof is also provided in this paper showing that this scheme is feasible. ©, 2015, Nanjing University of Science and Technology. All right reserved. Source

Cao J.,Henan Normal University | Cao J.,Peking University | Li D.,Henan Normal University | Li D.,Henan Police College | And 4 more authors.
Journal of High Energy Physics | Year: 2014

Abstract: As a most natural realization of the Next-to Minimal Supersymmetry Standard Model (NMSSM), λ-SUSY is parameterized by a large λ around one and a low tan β below 10. In this work, we first scan the parameter space of λ-SUSY by considering various experimental constraints, including the limitation from the Higgs data updated by the ATLAS and CMS collaborations in the summer of 2014, then we study the properties of the Higgs bosons. We get two characteristic features of λ-SUSY in experimentally allowed parameter space. One is the triple self coupling of the SM-like Higgs boson may get enhanced by a factor over 10 in comparison with its SM prediction. The other is the pair production of the SM-like Higgs boson at the LHC may be two orders larger than its SM prediction. All these features seems to be unachievable in the Minimal Supersymmetric Standard Model and in the NMSSM with a low λ. Moreover, we also find that naturalness plays an important role in selecting the parameter space of λ-SUSY, and that the Higgs χ2 obtained with the latest data is usually significantly smaller than before due to the more consistency of the two collaboration measurements. © 2014, The Author(s). Source

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