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This paper presents a LED display system triggered by the natural wind which can be used for ice lantern, the system includes a signal detection unit, control unit and LED display unit. When the system detects a natural wind signal , the center control module will make a signal processing for the signal, LED display module set the display mode according to the results of processing options, the display modes include the following, the LED lamps sequentially turned on in accordance with wind direction, or make the pattern presetting on the LED array move with the natural wind direction , when the natural wind signal is very weak, system will control LED array display static pattern. A stable system model is realized in accordance with the design requirements, after testing, system performance is stable, reached the set requirements.

At present, indirect effects of high-voltage electrostatic field on organisms and biological materials have been extensively studied. However, the investigations on direct interaction between the electrostatic field and enzyme are scarce. In this paper, the direct effect of high-voltage electrostatic field on the LP and the protective effects of sucrose fatty acid ester on the activity of enzyme in high-voltage electrostatic field have been experimentally investigated. The results show that, high-voltage electrostatic field has direct effects on the LP and the best condition to enhance the activity of enzyme can be obtained. When the electric-field strength is low, with the increasing of the electric-field strength, the activity of the LP will be weakened. When the electric-field strength exceeds a certain level, the activity of the LP will be enhanced with the increasing of electric-field strength. For too higher electric-field strength , the activity of the LP will be again weakened with the increasing of electric-field strength. The sucrose fatty acid ester in low concentration provides a proper hydrophobic microenvironment for enzyme, which leads to the enhancement of enzyme's activity, while sucrose fatty acid ester in high concentration leads to the weakening of enzyme's activity. Moreover, sucrose fatty acid ester in enzyme solutions has protective effects on enzyme in the electric field and can reduce the impacts of high-voltage electrostatic field on the LP.

In this work, TiO2nanoparticles (NPs) were prepared through a well-developed hydrothermal method. The dry products were characterized by digital camera, transmission electron microscopy (TEM), X-ray diffraction (XRD) and thermogravimetric method (TGA). These results suggested that TiO2NPs were well-crystallized and oleic acid-capped (OA-capped; 33.42 wt.%). In order to investigate the flocculation and stability of TiO2NPs colloids, redispersed experiments were carried out by altering the preparative parameters (e.g., redispersion solvent, washing times). In addition, the compounding stability of TiO2NPs colloids with AuNPs colloids and MnO4-solution under processing conditions (e.g., aging with stirring and under UV irradiation) were also studied. In principle, systematic investigations of flocculation and stability of TiO2NPs will be useful for their potential applications including novel photocatalysts and biosensors.

WO3 films were deposited on glass substrates by magnetron sputtering at room temperature. Single factor method was employed to investigate the effect of sputtering parameters (sputtering power, oxygen flow and depositing time) on the photocatalytic properties of WO3 films. The crystalline structure and surface microtopography of WO3 film were characterized by X-ray diffraction and Scanning Tunneling Microscope respectively. The results show that the WO3 films are amorphous, and the photo-degradation rate of WO3 films for methylene blue reaches the peak value of 83.3% when the film was deposited under the conditions that the sputtering power was 80W, the oxygen flow was 15SCCM and the depositing time was 60min. The thickness threshold value for WO3 photocatalytic films is 632nm. When the thickness of the WO3 films is less than the threshold value, the photocatalytic degradation activity aggrandizes with the increase of film thickness, and then becomes steady when the thickness exceeds 632nm.

The effect of deposition parameters such as sputtering power, nitrogen flow rate and thickness of TaNxon the optical performance and chemical durability of composite Tantalum nitride /Ag/ tantalum nitride (TaNx/Ag/TaNx) films was investigated. When the configuration of composite film was TaNx(60nm)/Ag (12nm)/TaNx(60nm) accompanying with the sputtering power 120W and the nitrogen flow rate 50sccm, the visible light transmittance of composite film could reach up to 80% at the wavelength of 550nm and the emissivity was 0.087. In addition, the chemical durability of the coatings was evaluated and the results indicated that the low-e coating presented very good chemical durability.

In present investigation the influence of second phase particles on microstructure evolution during confined channel-die pressing (CCDP) and mechanical behaviour after CCDP were studied using two-phase Al alloys of Al-1.5Mn and Al-5Zn-1.6Mg. The investigation results revealed different grain refinement kinetics during CCDP and distinct mechanical behaviours after CCDP for both alloys. The results are discussed based on the influence of the second phase particles on dynamic recovery and the interaction with mobile dislocations during plastic deformation.