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Through the analysis of harmonics caused by transformer, capacitor, electromagnetic voltage transformer and other accident, harmonics is an important indicator of power quality, which has been included in the “pollution" of power grid is found. In order to understand the harmonic, this paper from the concept of quality of electric energy, and then gradually extended to the field of harmonics. This paper firstly introduces the various reasons and equipment may produce harmonic, Secondly, illustrate harm of harmonic to operation of transformers, capacitors, electromagnetic voltage transformers and other electrical equipment, let more people know and understand the relevant knowledge of the harmonic, In order to save technical force and provide scientific basis for future effective harmonic.

A novel method to automatically generate the depth map is presented, when the depth maps of reference images located before and after the target image in the same image sequence are given. A novel grid dividing method and a joint feature response model are proposed to adaptively select trace points, and an image deformation algorithm is given to track depth maps with the trace points. Experimental results show that the proposed method can generate depth maps effectively and accurately, which can meet the industrial needs in 2D-3D conversion.

Phthalazinone structure contained phthalaazione ether sulfone ketone (PPESK) is a kind of excellent engineering plastic with high temperature resistance and resolvability. In this paper, SC-CO₂ was used as foaming agent to prepare PPESK foams by temperature rising method. The influence of technological conditions like foaming time, foaming temperature and saturation pressure on cell density and cell morphology was discussed and analyzed.

Shallow inland water resources has a large potential for development. To Jiyang shallow groundwater for example, through the regular ion-test analysis, Piper diagram and hydrogeochemical characteristics, the results show that: (1) The type of chemistry of shallow groundwater inland were Cl·SO₄-Mg·Na·Ca; (2) The salt water area is relatively fixed, there is no expansion or decreasing trend; (3) The level flow of shallow groundwater is slow and water rock interaction is strong, that is not conducive to the shallow groundwater quality improvement, changing the runoff conditions of shallow groundwater is essential way for shallow groundwater resources exploitation.

In order to study the toxicity mechanism of plant VOCs of four kinds of terpene monomers(α-terpineol,α-pinene,β-pinene,1,8-cineole), the activities of acetylcholinesterase in Zophobas morio larvae were treaded with spectrophotometer at different time (12h, 24h, 36h, 48h). The results showed that four kinds of terpene monomers (α-terpineol, β-pinene, α-pinene, 1,8-cineole) had high biological activity in Zophobas morio, which can inhibit the activity of acetylcholinesterase(AchE) effectively．

In this study,the cellulase-producing ability of Aspergillus niger FC-1 through solid-state fermentation (SSF) and characteristics of the cellulase were investigated. The maximum activities of total cellulase (FPase) and endoglucanase (CMCase) were 8.2 and 31.5 IU per gram of dried substrate respectively after 96-h incubation period. The activities of both FPase and CMCase produced by Aspergillus niger FC-1 exhibited the optimal values at pH 5.5 and 50°C(as shown in Fig.2). Thermostability and pH stability of the enzymes were respectively appreciable at temperature ranging from 45°C to 55°C, pH ranging from 5.0 to 5.5. In addition, with an optimal 1:10 (w/v) substrate to moisture ratio (a cellulase loading of 8.5 FPU per cellulose), the glucose concentration was as high as 36.6 g glucose l^-1 for a 48 h hydrolysis of corncob residues.

70-um thick homoepitaxial layers with very low defect density were grown on 6-inch 4° off-axis wafers using hot-wall chemical vapor deposition (CVD). Process optimization resulted in reduction of the density of triangular defects from 1.01 cm^-2 to 0.14 cm^-2. The treatment of wafer (CMP or selection) was essential. The in-situ etch process was optimized prior to the epitaxial growth. Junction Barrier Schottky diodes fabricated on the epitaxial films presented a typical I–V characteristic and a block voltage of 6500 V.

Paeonol is one of main medicinal ingredients of Cortex Moutan. Paeonol has the functions of sedative, hypnosis, anti-bacterial, antibiosis, anti-inflammation, antioxidation, reducing blood pressure and so on. Paeonol has extensive biological activities and has broad prospects of exploitation and utilization. This paper reviews the latest progress of its pharmacology.