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The pellet of Aspergillus oryzae CICC 2026 was found to exhibit glutamate decarboxylase activity, and γ-aminobutyric acid was testified by paper chromatography. Its biochemical and kinetic properties were characterized. The results showed the pellet did not accumulate γ-aminobutyric acid (GABA) in the fermentation broth, but catalyzed the α-decarboxylation of MSG to GABA in the acetate buffer. The...
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A variety of xenogeneic and allogeneic extracellular matrix (ECM) scaffolds have been promising in various tissue engineering applications, such as the porcine small intestinal submucosa. Yet no particular scaffolds have been optimal for vocal fold regeneration. The decellularized human umbilical vein (HUV) is a novel allogeneic scaffold that has shown some promise for cardiovascular tissue engineering...
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The present paper deals with the efficiency of a novel macromolecule flocculant crosslinked starch-graft-polyacrylamide-co-sodium xanthate (CSAX) to remove Cr(VI) from water sample of a water plant. The results showed that the CSAX (1.0 mg/L) is capable of removing up to 85.4% of Cr(VI) from water sample having low initial concentration (0.221 mg/L) under the optimum conditions. The water treated...
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Brain development has become a prominent issue in recent years. In people with or without any visible or invisible diseases, degeneration is an inevitable phenomenon that a brain will develop over time. Diffusion Tensor Image (DTI) has been a robust technique to observe white matter details in normal subjects and in patients. In this study, our goal is to consolidate DTI indices to properly differentiate...
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This paper mainly studied 24h HRV of several CHD patients who had myocardial infarction (MI) in different part of heart. The whole 24h HRV was divided to 6 sections, and LF/HF was calculated. Primary results indicated the tendency LF/HF was different between anterior myocardial infarction (AMI) and inferior myocardial infarction (IMI).
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Music electrotherapy is on the basis of electro-acupuncture, which combined music, electrode with electro-acupuncture. This method draws on the characteristics of both electrotherapy and music therapy music. Music electrotherapy through music and music signals acting on the hearing and body, increase or improve the person's psychological, physiological conditions, so as to achieve health, disease...
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Feasibility of preparing mesoporous activated carbons from bamboo solid waste was investigated. The effects of activation conditions, e.g. CO2 flow-rate, activation temperature and retention time, on the characteristics of the activated carbons, i.e. density, porosity, BET surface area, pore size distribution, and surface chemistry were studied. The experimental results showed that it was feasible...
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Three quantification experiments for heart murmur grading were performed, including murmur area ratio, weighted murmur area ratio and murmur duration ratio, and murmur energy ratio. The result of this study shows that it is possible to find a reasonable, noninvasive, easy, and inexpensive method to realize objective quantification for heart murmur grading.
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SBR process of A/O/A/O many-point-water-inflow mode was investigated to treat landfill leachate. When the HRT of four stages were respectively A(2.0h)/O(10.0h)/A(2.0h)/O(6.0h), the influent of two anoxic stages were added in the proportion of 2:1, excretion ratio was 1/3, pH of influent was 7.5~8.0, the results showed that the removal rate of CODCr, NH3-N and TN were 71.7%, 92.4% and 69.8% respectively...
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The present paper proposes the application of sodium trititanate whisker as solid sorbent for trace cadmium pre-concentration/separation using a static system coupled with flame atomic adsorption spectrometry (FAAS). The method comprised the pre-concentration of Cd(II) ions at a buffered solution (pH 5.0) onto 0.25 g of sorbent previously activated by 3.0 mol/L of HNO3. The elution step was carried...
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In order to investigate the feasibility of treatment of dairy farm wastewater by constructed wetland and to provide the operation parameters for a full scale constructed wetlands to improve the quality of effluent water, A pilot test was conducted with a plug flow constructed wetland to treat dairy farm wastewater in Ji'nan city. The results show that, under influent loading rate 3m3·d-1, the average...
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Simulation and experimental study the IAQ (indoor air quality) of air-conditioning classroom in summer condition were carried out. With professional software FLUENT, research model of complicated three-dimensional turbulent flow-field that contained many kinds of ventilation equipments was established. The model visually simulated the changes of distributions of indoor air velocity and air age. The...
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Urban rivers are closely related to the social and economic life. But urban rivers were polluted in different degrees. This paper explores Tianjin Outer Ring Sewage River and Jinhe River to conduct water quality analysis. The results showed that both rivers were polluted. Measures are suggested to improve the water quality. The paper can be used as a basic data for the pollution state and to provide...
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Acid mine drainage (AMD) is a serious pollution problem, which is considered as one of the worst environmental problem of mining activities owing to low pH and high concentrations of heavy metals and other toxic elements. So it is crucial to control and prevent AMD production. In this study, coal mine waste with artificial irrigation leached acid drainages containing high concentrations of SO42-,...
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In this study, Shinnar-Le Roux algorithm is introduced to optimize the selective excitation pulses to meet the needs of slice selection in magnetic resonance imaging technique. Moreover, the SLR pulse can be customized attributes for its good slice profile with no sidelobes and very small rejection ripples. Finally, simulation results of SLR pulses with different flip angles are compared with the...
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Ontology is deemed as an effective means in the field of information integration. However, environmental data, which involves various kinds of data such as spatio-temporal data about air, land, water as well as non nature data about social and economic issues, is quite distinct to general data. Currently how to use ontology for environmental data integration was seldom discussed. This paper presents...
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The Achilles tendon plays an important role in our daily activities and studies have shown that tendon properties, such as morphology and stiffness, are related to aging, activity levels and genders. A better understanding of its morphology and mechanical properties will provide guidance to health professionals on intervention recommendation. However, the majority of the existing studies investigated...
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The corn embryo was taken as raw material to extract glutathione, and the antioxidant activity of reduced glutathione was studied. The result indicated that the glutathione had strong elimination ability to free radicals. Total antioxidant ability was 12.95U/mL, the maximum inhibition rate to hydroxyl free radical was 80.19%, the maximum ability to anti-superoxide anion was 135.2U/L, the maximum inhibition...
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The water system of Fen River in Shanxi province has upstream, midstream and downstream three sections, which are separately located in Jingyou, Jiexiu, Xiaodian, Hongtong, Linfen and Hejin, six sampling points are disposed there for the sake of collecting the samples of the filtered water and suspended matter, and measuring heavy metal contents. The measurement results show that heavy metal exist...
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Effects of NaCl stress on seed germination and seedling growth in wheat were studied in this paper. The results showed that the germination rate of the seeds treated with NaCl concentration at <;100 mM, germination rate of the seeds was not significantly comparing with control, however the germination of those seeds treated with NaCl at higher concentration (≥200 mM) was inhibited and at 400 mM...
