Publications (12)11.77 Total impact
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Article: [Establishment and applicability evaluation of animal model which was suitable to evaluate immediate hypersensitivity induced by injections of traditional Chinese medicine in BN rats].
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ABSTRACT: Qingkailing injection, Shuanghuanglian injection, baicalin, chlorogenic acid as sample, guinea pig as control, to observe the specificity of allergic response to traditional Chinese medicine (TCM) injection in BN rats and establish a suitable animal model to evaluate applicability of allergic response in BN rats and guinea pigs induced by TCM. BN rats were sensitized by TCM injection, the symptoms, the rate and degree of allergic response were observed, the level of histamine in serum and tissues were determined by ELISA assay, the rate and degree of pathological changes in target organs were observed by HE staining under light microscope. There were significant symptoms of allergic response can be in BN rats, the level of histamine in serum, lung and trachea tissues increased significantly and there were significant pathological changes in lungs and tracheas. Meanwhile, the similar symptoms of allergic response can be induced by penicillin and trichosanthin. The rate and degree of allergic response, the rate and degree of pathological changes was higher in BN rats than in guinea pigs. Compared with guinea pig, BN rat is probably more suitable animal model in evaluating allergic response to injection of TCM.Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica 07/2011; 36(14):1845-9. -
Article: Foaming control by automatic carbon source adjustment using an ORP profile in sequencing batch reactors for enhanced nitrogen removal in swine wastewater treatment.
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ABSTRACT: Incomplete denitrification and ammonia accumulation were found to cause proliferation of filamentous microorganisms in sequencing batch reactors (SBRs) for swine wastewater treatment. Foaming was observed in response to the accumulation of 115.2 and 12.2 mg/L of nitrate and ammonia, respectively. The mixed liquor suspended solids (MLSS) level in SBRs was decreased to 2,000 mg/L and the suspended solids in the effluent reached 200 mg/L when foaming appeared. However, the use of swine waste as an external carbon source for enhanced biological nitrogen removal was found to effectively control the foaming caused by filamentous microorganisms. Therefore, an optimum strategy for the addition of swine waste was designed using integrated real-time control to provide pulse input control of slurry based on the "nitrate knee" in the oxidation-reduction potential profile. In this case, the MLSS concentration was maintained at an average value of approximately 7,550 mg/L, while the SS in the effluent was less than 30 mg/L.Bioprocess and Biosystems Engineering 06/2009; 33(3):355-62. · 1.81 Impact Factor -
Article: Oxidative decomposition of azo dye C.I. Acid Orange 7 (AO7) under microwave electrodeless lamp irradiation in the presence of H2O2.
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ABSTRACT: A novel microwave electrodeless lamp (MWL) rather than traditional electrode lamp (TEL) was used in a H(2)O(2)/MWL system as light source. This technique provided a new way to study the simultaneous effect of both UV-vis light and microwave irradiations. This study showed that H(2)O(2)/MWL process was 32% more effective than H(2)O(2)/TEL process in degrading azo dye Acid Orange 7 (AO7). Further study found that the degradation of AO7 by the H(2)O(2)/MWL process was initiated by the attack of HO* radicals generated by the photolysis of H(2)O(2). However, the direct photolysis of AO7 by MWL irradiation was not negligible. Effect of operation parameters, such as the initial concentrations of AO7 and H(2)O(2) and pH, were investigated. A kinetic model of degradation of AO7 by H(2)O(2)/MWL process was found, in which not only the HO* oxidation but also direct photolysis were considered. The kinetic model was consistent with the experiment results. The degradation of AO7 by H(2)O(2)/MWL corresponded to a pseudo-first order reaction. The apparent reaction constant (k(ap)) was a function of initial concentrations of H(2)O(2) and AO7 and pH of the solution.Journal of Hazardous Materials 07/2006; 134(1-3):183-9. · 4.17 Impact Factor -
Conference Proceeding: A mini high-precision digital measurement system of electrical resistance temperature based on MSC1210
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ABSTRACT: A highly precise automated portable digital transmitter of electrical resistance temperature is provided. Many ways of electrical resistance measurement are discussed. Then a system of highly precise ratiometric resistance measurement based on MSC1210, a 24 bit analog-to-digital converter with enhanced 8051 MCU and high-performance peripherals, is designed. A series of electrical resistance measurement experiments are performed and the results are compared to the results of the standard thermometer - Keithley 2001 multimeter.Information Acquisition, 2004. Proceedings. International Conference on; 07/2004 -
Conference Proceeding: Integrated temperature and humidity sensor based MEMS
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ABSTRACT: MEMS-based integrated temperature and humidity sensor has the advantages of low weight, small size, low cost, easy integrity and is a highly advanced apparatus of identity, reliability, easy production. The feasibility of thermal conductivity method used to measure humidity and structure of the integrated temperature and humidity sensor are analyzed in this paper, and provides the measuring methods in detail. We mainly focus on measuring result of the humidity part, and verify the excellent performance of the integrated temperature and humidity sensor.Information Acquisition, 2004. Proceedings. International Conference on; 07/2004 -
Article: [Disinfection and degradation of 2,4-DCP with UV-radiation and on-line ozone in drinking water treatmeant].
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ABSTRACT: A type reactor with on-line O3 was used to do further research of the disinfection of total bacteria, E. coli and degradation of 2,4-DCP. The result was obtained in the following conditions. Only UV-radiation, O3 applied by other machine and by the reactor itself, and other conditions were changed to study the disinfection and degradation. The result showed the satisfied effect of disinfection and degradation would be achieved by using UV/O3 applied outside and when the flow rate was about 400 L.h-1, on-line O3 could be produced and make high efforts to enhance disinfection and degradation. The method of UV/O3 was a promising technology in the treatment of drinking water.Huan jing ke xue= Huanjing kexue / [bian ji, Zhongguo ke xue yuan huan jing ke xue wei yuan hui "Huan jing ke xue" bian ji wei yuan hui.] 10/2002; 23(5):57-61. -
Article: Photocatalytic detoxification of microcystins combined with ferrate pretreatment.
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ABSTRACT: This work focuses on the development and evaluation of a combined technique including ferrate oxidation and photocatalytic detoxification of microcystins. Greater removal efficiency of the microcystins-LR (MLR) can be achieved using the combined process. The experimental result demonstrates that the residual Fe after ferrate oxidation can enhance the efficiency of photocatalytic reaction. The optimal dosage of ferrate 20 mg/l was determined by studying the degradations of total organic carbon (TOC) and MLR at different concentrations of residual Fe. As expected, pH had a remarkable influence on the reaction rate of detoxification of MLR and a low pH was beneficial to the reaction.Journal of Environmental Science and Health Part A 02/2002; 37(4):641-9. · 1.19 Impact Factor -
Article: Influence of supplemental nutrient on aerobic decolorization of acid red 14 in activated sludge.
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ABSTRACT: Azo dyes are non-biodegradable in the textile effluent under aerobic condition. This study demonstrates that the addition of nutrients leads to degradation of a selected azo dye (AR14), and the major decolorization kinetic pathway of AR14 could be expressed as a pseudo first order kinetic model under the experimental conditions used in this study. An excellent correlation was obtained between the decolorization speed and additional nutrient concentration, as indicated by a coefficient of determination (r2) of 0.9899. At a higher nutrient concentration, the relatively high color removal rate can be reached up to 92.9% in a short time. The degradation ability of azodye could be changed by supplemental nutrient. The destroy of chromophore was the first step of degradation of azo dye under the aerobic conditions, and the intermediates of the dye had significant toxic to the activated sludge, while AR14 of 150 mg/l had slight inhibitory effect on sludge respiration.Journal of Environmental Science and Health Part A 02/2002; 37(4):667-78. · 1.19 Impact Factor -
Article: The combination of carbon adsorption with activated sludge for the decolorization of wool‐dyeing wastewater
Journal of Environmental Science & Health Part A. 11/2000; A35(10):1789-1795. -
Article: Palladium(0)-catalyzed coupling-cyclization reaction of polymer-supported aryl iodides with 1,2-allenyl carboxylic acids. Solid-phase parallel synthesis of butenolides.
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ABSTRACT: In this contribution, we constructed a library of butenolides with 77 members by parallel synthesis strategy on Merrifield resin. Sixteen 2,3-allenoic acids and 12 polymer-bound aryl iodides were combined to react with each other, and then the polymer-supported products were cleaved to release butenolide derivatives. The reactions with alkyl-substituted 2,3-allenoic acids in acetonitrile afforded the corresponding products in high yields and high purities, whereas those with aryl-substituted acids in acetonitrile failed. After some reaction conditions were screened, the solid-phase reactions with aryl-substituted 2,3-allenoic acids were realized in toluene, and the products are of good purities albeit in slightly low yields. In the benzyl ether linkage, a new cleavage model was found. By adding 6 equiv of acetyl bromide, we can get single (5-oxo-2,5-dihydrofuran-3-yl)benzyl bromide other than the corresponding benzyl acetate. To further increase the diversities, a dihydropyran (DHP) linker was introduced into our combinatorial synthesis of butenolides. By reversing the addition sequence of 2,3-allenoic acids and organic base, we realized the solid-phase cyclization reaction of polymer-bound aryl iodides with the THP linkage in moderate yields and good purities. Now the library of butenolides includes (5-oxo-2,5-dihydrofuran-3-yl)benzoic acids, -aryl acetates, -benzyl bromides, -benzyl alcohols, and -phenols, which are difficult to synthesize with conventional solution methods.Journal of Combinatorial Chemistry 4(3):239-47. · 3.41 Impact Factor -
Article: Investigation of the roles of active oxygen species in photodegradation of azo dye AO7 in TiO2 photocatalysis illuminated by microwave electrodeless lamp
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ABSTRACT: A novel microwave electrodeless lamp (MWL) was used as the light source for microwave assisted TiO2 photocatalysis to degrade azo dye Acid Orange 7 (AO7). This technique aims to provide a new way to study the synergetic effect of both UV–vis light and microwave irradiations on aqueous solution of catalysts. The roles of active oxygen species in the photodegradation of AO7, such as hydroxyl radical (HO), positive holes (h+) and hydrogen peroxide (H2O2), were investigated to understand the photodegradation mechanism. The presence and roles of these oxidative species were examined using appropriate quenchers. It was found that the degradation of AO7 proceeded via three pathways, namely, UV-induced photocatalytic degradation, visible light-induced dye self-photosensitized degradation and direct photolytic degradation. The percentages of dye degradation by the three pathways were about 31.1%, 39.0% and 19.5%, respectively.Journal of Photochemistry and Photobiology A: Chemistry. 199:311-315. -
Article: Microwave electrodeless lamp photolytic degradation of acid orange 7
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ABSTRACT: Photolytic degradation of acid orange 7 (AO7) under microwave irradiation was investigated in which a novel microwave electrodeless lamp (MWL) was employed as light source. The novel MWL brings a new way to study the simultaneous effect of both UV–vis light and microwave irradiation on degradation of dye pollutants. Color, TOC, pH and inorganic ions concentrations with reaction time were monitored to evaluate the ability of MWL to degrade AO7. It was found that the coupled UV–vis/microwave irradiation led to excellent performance on decolorization and mineralization. AO7 solution could be completely decolorized at 80 min and mineralized at 150 min. Inorganic ions produced in the solution proved that AO7 was completely destroyed. The mechanism of MWL photolytic degradation of AO7 was investigated by examining the presence and role of some important oxidative species, such as superoxide (O2−), hydroxyl radical (HO), H2O2 and O3, using appropriate quenchers. The results showed that a large amount of H2O2 and O3 could be generated in AO7 solution by MWL irradiation and the degradation of AO7 was mainly achieved by the attack of HO radicals resulted from photolysis of H2O2 and O3. Direct oxidation of AO7 by O3 and O2− also played a few roles in degradation of AO7.Journal of Photochemistry and Photobiology A: Chemistry.
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Institutions
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2000–2006
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Chinese Academy of Sciences
- • Research Center for Eco-Environmental Sciences
- • State Key Laboratory of Environmental Aquatic Chemistry
Beijing, Beijing Shi, China
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