Time filter

Source Type

Zhang H.-B.,Heilongjiang East College | Zhang H.-B.,Heilongjiang National Career Academy | Zhang J.,Heilongjiang East College | Fu H.-Y.,Heilongjiang East College | Han G.-Y.,Hei Long jiang Entry Exit Inspection and Quarantine Bureau
Modern Food Science and Technology | Year: 2013

The pumpkin yellow pigment was extracted and embedded. The best extraction condition were that the absorption wavelength 446 nm by using Ultraviolet-visible spectrophotometer, extraction solvent 95% alcohol, the extraction temperature 70°C, the proportion of pumpkin and alcohol 1:1, and the extraction time 5 h. The best embedding conditions were the proportion of core material and exterior 1:20, the proportion of octenyl succinic starch ester and whey isolated protein 2:1, water bath temperature 75°C, the holding time 40 min, and the pH value 4.75, under which the embeded rate was 96.24%.


Xu G.R.,Harbin Institute of Technology | Tang J.H.,Harbin Institute of Technology | Tang J.H.,Heilongjiang East College | Li G.B.,Harbin Institute of Technology | Spinosa L.,University of Bari
Environmental Technology (United Kingdom) | Year: 2014

The primary goal of this study was to compare the pollutant removal efficiency of the reactivated activated-ferric-sludge (AFS) with that of the activated sludge (AS). Most tested organic pollutants were preferably removed by reactivated AFS. The optimal reactivated conditions for AFS were a reactivation time of 3 h, pH of 5-9, AFS dose of 5 g/L and dissolved oxygen of 2-6 mg/L. The results revealed a positive correlation between microbial activity and the removal efficiency of organic pollutants, with a higher microbial activity being associated with a better removal efficiency of organic pollutants. Additionally, variations in extracellular polymeric substances were found to be crucial to the microbial activity and adsorption capacity of reactivated AFS. After reactivation, reactivated AFS was superior to AS for the removal of most pollutants. Finally, the mechanism of AFS reactivation was investigated. Overall, the results of the present study demonstrate that reactivated AFS has the potential for widespread application in the removal of organic pollutants during the wastewater treatment process. © 2014 Taylor & Francis.


Wang Y.,Harbin Institute of Technology | Wang Y.,Heilongjiang East College | Chung J.S.,Harbin Institute of Technology | Cao G.-L.,Harbin Institute of Technology | And 2 more authors.
Advanced Materials Research | Year: 2012

In this work, strain Phanerochaete chrysosporium producing cellulase was studied by fermentation process. Carbon source involves cellobiose, xylose, xylan, carboxymethylcellulose sodium, avicel, filter paper, corn stalk and glucose. Peptone, yeastextract, carbamide, ammonium nitrate, ammonium sulfate were researched for nitrogen source. Under the conditions of carbon source avicel, nitrogen source ammonium, the activity assays on different enzymes of respective component is optimum.Ultraviolet ray, nitrosoguanidine were applied to mutate Phanerochaete chrysosporium. The optimal conditions were as follow: 60S, 50min.Colony morphology with obvious variation was used as sceening index. 120mutants were selected, carboxymethyl cellulose activity of cach mutant was determined and 20 strains with 30% increasing of cellulose activity were screened.GD3 mutant was obtained, with the increasing rate of filter paper activity 30.50%. © (2012) Trans Tech Publications, Switzerland.


Zeng J.-L.,Hunan Provincial Key Laboratory of Materials Protection for Electrical Power and Transportation | Yu S.-B.,China Tobacco Hunan Industrial Corporation | Tong B.,Dalian University of Technology | Sun L.-X.,CAS Dalian Institute of Chemical Physics | And 4 more authors.
Journal of Thermal Analysis and Calorimetry | Year: 2011

An N-tert-butyloxycarbonylated organic synthesis intermediate, (S)-tert-butyl 1-phenylethylcarbamate, was prepared and investigated by means of differential scanning calorimetry (DSC) and thermogravimetry (TG). The molar heat capacities of (S)-tert-butyl 1-phenylethylcarbamate were precisely determined by means of adiabatic calorimetry over the temperature range of 80-380 K. There was a solid-liquid phase transition exhibited during the heating process with the melting point of 359.53 K. The molar enthalpy and entropy of this transition were determined to be 29.73 kJ mol-1 and 82.68 J K-1 mol-1 based on the experimental C p-T curve, respectively. The thermodynamic functions, [HT 0 - H298.15 0] and [ST 0 - S 298.15 0], were calculated from the heat capacity data in the temperature range of 80-380 K with an interval of 5 K. TG experiment showed that the pyrolysis of the compound was started at the temperature of 385 K and terminated at 510 K within one step. © 2010 Akadémiai Kiadó, Budapest, Hungary.


Na Z.,Heilongjiang East College | Wang X.,Heilongjiang East College | Ma Y.,Harbin University of Commerce | Qian L.,Heilongjiang East College | Yan H.,Heilongjiang East College
Advanced Materials Research | Year: 2012

Activated ozone as the carrier, crylic acid as the monomer and glutaraldehyde as the cross-linking agent were used to research the immobilization of transglutaminase on polypropylene microporous membranes. The effect of ozone activation time, grafting time, grafting temperature, monomer concentration and ammonium ferrous sulfate concentration on grafting degree were studied, the Immobilization conditions were also studied. We found the optimal reaction conditions as following: consistency of hexamethylendiamine was 15%, at 50°C for 120min and consistency, at 30°C for 45minites, consistency of enzyme was 15mg/mL at 4°C. So the immobilized amount of protein could come to 30.23mg/g membrane and the activity of immobilized MTG come to 16.9U/g membrane. © (2012) Trans Tech Publications, Switzerland.


Ren D.-C.,Heilongjiang East College | Lin P.,Heilongjiang Institute of Technology | Qian L.,Heilongjiang East College | He P.-F.,Heilongjiang East College | And 2 more authors.
Cailiao Gongcheng/Journal of Materials Engineering | Year: 2012

Modified Polyvinyl alcohol (PVA) films were prepared by casting from the solutions using urea/triethanolamine as a mixed plasticizer. The interactions between urea/triethanolamine and PVA were studied by FT-IR. Crystallinity and thermoplasticity of modified PVA were tested by TGA, DSC, and XRD. At the same time, mechanical properties, light transmission rate, water solubility of modified PVA also were tested. The results showed that mixture of plasticizer can decrease the extent of inter-or intramolecular hydrogen bonds in PVA, crystallinity and melting point of modified PVA depresses without bringing about any obvious impact on the thermal decomposition temperature. With the mass fraction of mixture of plasticizer increasing, the modified PVA had lower strength and higher elongation at break, good light transmission rate, lower degree of swelling and higher solubility.

Loading Heilongjiang East College collaborators
Loading Heilongjiang East College collaborators