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He Z.,Zhejiang University | Xiao H.,Hangzhou Institute of Calibration and Testing for Quality and Technical Supervision | Tang L.,Zhejiang University | Min H.,Zhejiang University | Lu Z.,Zhejiang University
Bioresource Technology | Year: 2013

HD-1, a stable microbial consortium capable of mineralizing di-. n-butyl phthalate (DBP), was developed from activated sludge. The dominant microorganisms in the consortium, Gordonia sp., Burkholderia sp. and Achromobacter sp., were identified by denaturing gradient gel electrophoresis (DGGE). The consortium could mineralize approximately 90% of 1200. mg/L DBP after 48. h of cultivation. The optimal DBP degradation conditions were 25-30°C and pH 8.0-9.0. The addition of yeast (0.5. g/L), sodium acetate (0.5. g/L, 1.0. g/L), Brij 35 (0.2%, 0.5%, 1.0%), or Triton X-100 (0.2%) enhanced DBP degradation. The DBP degradation rate was influenced by the presence of dimethyl phthalate (DMP) and diethyl phthalate (DEP). Only one main intermediate, phthalic acid, could be monitored by gas chromatography-mass spectrometry (GC-MS) during the degradation process. The HD-1 consortium also utilized phenol, o-dihydroxybenzene as the sole carbon and energy source. The results indicate the consortium may represent a promising application for DBP bioremediation. © 2012 Elsevier Ltd. Source

Li Z.F.,Hangzhou Institute of Calibration and Testing for Quality and Technical Supervision | Xu Z.L.,China Jiliang University
Applied Mechanics and Materials | Year: 2013

According to the problems of slow weighing speed and low precision resulting from sticky foods caking in quantitative packing weighting, the mechanical structure, the circuit system and the software algorithm were designed in this paper. To improve the weighing speed and precision of sticky foods, the double-tube spiral feeding machine and a special structure of scale bucket were adopted in mechanical structure; a programmable AD8555 was used as weak signal amplifier of weighing sensor and a 32-bit microprocessor LP2134 was utilized as the core of the circuit system; the piecewise weighing method, FIR software filter and the differential algorithm are applied to send command to executive mechanism in program design. © (2013) Trans Tech Publications, Switzerland. Source

Li Z.,Hangzhou Institute of Calibration and Testing for Quality and Technical Supervision | Xu Z.,China Jiliang University
Applied Mechanics and Materials | Year: 2012

In order to solve the problem of siphon rainfall recorder's hard to control automaticly and the measurement error when siphoning, we research the Automatic forecasting system based on double barrel double siphon rainfall recorder and ARM processing terminal. By using double barrel double siphon structure and weighing cell, we eliminate the rainfall error caused by siphon loss, and achieve the automatic collection of rainfall data. © (2012) Trans Tech Publications, Switzerland. Source

Shen C.,China Jiliang University | Chu J.,China Jiliang University | Qian F.,Hangzhou Institute of Calibration and Testing for Quality and Technical Supervision | Zou X.,China Jiliang University | And 3 more authors.
Journal of Modern Optics | Year: 2012

To improve the poor color rendering index (CRI) of YAG:Ce-based white light-emitting diode (LED) due to the lack of red spectral component, core/shell/shell CdSe/CdS/ZnS quantum dots (QDs) were synthesized and blended into nano-YAG:Ce 3+ phosphors. Prominent spectral evolution has been achieved by increasing the content of QDs. A white LED combining a blue LED with the blends of nano-YAG phosphors and orange-and red-emission QDs with a weight ratio of 1:1:1 was obtained. This kind of white LED showed excellent white light with luminescent efficiency, color coordinates, CRI and correlated color temperature (CCT) of 82.5lm/W, (0.3264, 0.3255), 91 and 4580K, respectively. © 2012 Taylor & Francis. Source

Rao G.-W.,Zhejiang University of Technology | Guo Y.-M.,Zhejiang University of Technology | Shen Q.,Hangzhou Institute of Calibration and Testing for Quality and Technical Supervision
Acta Crystallographica Section E: Structure Reports Online | Year: 2012

In the title molecule, C 16H 16N 8O 2, four atoms of the tetra-zine ring are coplanar, with the largest deviation from the plane being 0.0236 (12) Å; the other two atoms of the tetra-zine ring deviate on the same side from this plane by 0.320 (4) and 0.335 (4) Å. Therefore, the central tetra-zine ring exhibits a boat conformation. The dihedral angles between the mean plane of the four coplanar atoms of the tetrazine ring and the two pyridine rings are 26.22 (10) and 6.97 (5)°. The two pyridine rings form a dihedral angle of 31.27 (8)°. In the molecule, there are a number of short C - H⋯O interactions. In the crystal, molecules are linked via a C - H⋯O interaction to form zigzag chains propagating along the [010] direction. Source

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