bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of Nanosilicon Dioxide on Structure and Properties of Poly(Vinyl Alcohol)/ Sodium Carboxymethylcellulose Blending Film
Authors: Zhang Xiao Xue , Dai Li Xing
Published: September 2013

Poly (vinyl alcohol) (PVA)/sodium carboxymethylcellulose (Na-CMC)/nanosilicon dioxide (nanoSiO2) films were prepared by solution casting method. The structure, properties and morphology of the films affected by nanoSiO2 were characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimeter (DSC), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and mechanical testing. With the increase of nanoSiO2 content from 0 to 2.3 wt%, tensile strength increased from 20.98 to 34.80 MPa, while further increase of nanoSiO2 decreased the tensile strength. FTIR spectroscopy of the films confirmed that Si-O-C bonds and hydrogen bonding were formed among PVA, Na-CMC and nanoSiO2, which was suggested to improve the tensile strength of the films.
Applicability Analysis for the Reconstruction Model of Automobile Two-Dimensional Eccentric Collision Accidents
Authors: Cao Yi , Xu Hui Zhi , Zuo Zhong Yi
Published: September 2013

In order to provide a theory algorithm for simulation and reconstruction analysis of automobile two-dimensional eccentric collision accidents, the applicability problems of the traditional dynamics model and trajectory model in this kind of accident were analyzed in theory respectively. Using PC-Crash software and the traditional models, a real accident case was reconstructed and analyzed. The comparative study between the reconstruction analysis results and the vehicles traces remained in the accident scene was conducted. According to the comparative study, reliabilities of the traditional models were verified.
Diesel Engine Spray Modeling with Lattice Boltzmann Method
Authors: Xu Cang Su , Xie Yang , Fang Dong Hua , Xu Yi Fan
Published: September 2013

In this paper we propose a novel Lattice Boltzmann method (LBM) incorporated with Large Eddy Simulation (LES) to simulate diesel engine spray process. The proposed LB-LES method combines several advantages of LBM and LES including clear physical pictures, easy implementation and capacity to describe turbulence structures of high Renolds fluid, it also can settle the problem that LBM cant converge of high Renolds. Simulation result shows: (1) Strong vortex exist around the spray cone and head of the spray; (2) A high fuel density regime exits inside the head of spray, that verifies the experiment result of American APS laboratory with the application of avalanche photodiode (APD) X-ray imaging technology to spray field; (3) LB-LES method can simulate the surface undulation phenomenon of spray which is generated by the aerodynamic force in the case of high Renolds.
Antioxidant Activities of Xiao-Yan-Hua-Jie-San and Identification of the Active Components
Authors: Li Yu Ping , Yao Li Hua , Wu Guang Jie , Jiang Fu Quan , Xiong Xiang Yuan , Liu Xin Ping
Published: September 2013

Xiao-Yan-Hua-Jie-San (XYHJS), a traditional Chinese prescription, is used as a medication recipe to clinically treat inflammation and hepatitis. In previous study, we reported the hepatoprotective effects of XYHJS by increasing an antioxidant enzyme activity in mice. In the present study, the main bioactive components of XYHJS and their antioxidant activity were further investigated by using different model systems in vitro. The total phenolics content in the extract of XYHJS was determined by the Folin-Ciocalteu method. Analysis of the major phenolic compounds in the extract of XYHYS was carried out by high-performance liquid chromatography (HPLC) and thin layer chromatographic (TLC) method. The total phenolic content of the extract was 2.84 ± 0.06 mg gallic acid equivalent (GAE)/g extract powder. The phenolic acid in XYHJS was found to be gallic acid (GA). The content of GA was 2.80 mg/ml by HPLC (n=5, RSD=1.26%). Furthermore, the antioxidant activity of XYHJS extract was determined by 1, 1-diphenyl-2-picrylhydrazyl radical (DPPH) scavenging activity and hydroxyl free radicals (·OH) scavenging activity assay. The radical scavenging activity of XYHJS increased significantly in a concentration-dependent manner. At a concentration of 2.5 mg/ml, the DPPH and ·OH scavenging activity was 89.94% and 91.53%, respectively. It can be concluded that the content of GA in XYHJS is very high and it is the main contributor to the antioxidant activity of XYHJS. Our study indicates that XYHJS prescription could be considered to be an effective agent in the prevention of various liver diseases associated with oxidative stress.
Antimicrobial Activity of Compound Traditional Chinese Medicine Feizhu Powder
Authors: Jiang Hong , Zhou Tie Zhong , Li Xin Guo , Zhang Hua , Liu Ying Zi , Zhen Zhi Gang , Wang Chun Hua , Wang Hong Jun
Published: September 2013

Feizhu powder, which is a classical Chinese medicine prescription collected in the Chinese Veterinary Pharmacopoeia, comprises four kinds of Chinese herbs: Rhizoma dryopteridis crassirhizomatis, Radix polygoni multiflori (prepared), Fructus hordei germinatus and Soybean (fry). According to dose proportion in the prescription and preparation method collected in the Chinese Veterinary Pharmacopoeia, we have prepared the Feizhu powder. In order to research the antibacterial activity in vitro of homemade Feizhu powder, it was extracted with 95% ethanol and water, respectively. Then minimum inhibitory concentration (MIC) of the extract was detected against Streptococcus suis, Staphylococcus aureus and Escherichia coli by micro porous-plate method. The results showed that MICs of Feizhu powder water extract ranged from 250 mg/mL to 500 mg/mL. While MICs of Feizhu powder alcohol extract ranged from 31.25 mg/mL to 62.5 mg/mL. The test data indicated that antimicrobial activity of Feizhu powder alcohol extract is superior to that of water extract, this lay the foundation for the extract of the antibacterial active ingredients and further research on Feizhu powder.
Synthesis and Interleukin-6 Inhibitory Activities of 3-Alkyloxylindolizine Derivatives
Authors: Cao Cheng Qiao , Wei Yong , Zou Kun , Chen Jian Feng , Huang Nian Yu
Published: September 2013

The synthesis and interleukin-6 (IL-6) inhibitory activities for a series of 3-alkyloxylindolizine derivatives were described. The target products were characterized by NMR, IR, ESI-MS and elemental analysis, and two compounds revealed better IL-6 inhibitory effects on LPS-induced IL-6 expression in mouse macrophages with the corresponding inhibition ratio of 66% and 74% at 100 μM. The bioactive compounds might be a good generation for further optimization as potential anti-inflammatory agents.
The Relationship of Flowability, Hygroscopicity and Compressibility Properties between Microcrystalline Cellulose, Sarcandrae Extract Powder, and the Mixture of the Two Materials
Authors: Liao Zheng Gen , Wang Jie , Liang Xin Li , Zhang Nan , Zhong Shao Jin , Ming Liang Shan , Zhao Guo Wei , Luo Yun
Published: September 2013

Microcrystalline Cellulose and Sarcandrae extract powder were used to study the relationships of pharmaceutical properties of powders before and after mixing operation. The theoretical values of the physical quantities of the binary mixture were calculated based on the random mixing theory. The measured values of angle of repose, hygroscopicity of binary mixture were larger than that of theoretical calculations. The effective Kawakita a and b for the MCC had changed by mixing operation. The parameters of blend powder reduced compared with MCC except D-1. The results suggested that the mixing behavior was not a complete random or simple superposition operation for the rough and sticky particles. The mixing process would create novel particles and the physical quantities of novel particles would changes regularly.
Characterization of the Replicon Region of the Enterococcus faecium Plasmid pEV105 Potentially Used in the Construction of Cloning Vector
Authors: Li Meng Yang , Huo Gui Cheng
Published: September 2013

A replication probe vector (pUB380) was constructed for detecting the replicon of LAB plasmid. A cryptic plasmid, pEV105, was isolated fromEnterococcus faeciumKLDS 6.0718. Multiple restriction endonuclease fragments of pEV105 were separately ligased to pUB380. After a series of subcloning and electrotransformation, the minimal replicon of pEV105 was isolated on a 2.5 kbPstI-XbalI fragment. Replicon based on this region followed a theta-type mechanism of replication inEnterococcus faeciumKLDS 6.0718. The minimal replicon DNA fragment was sequenced and the result shows that the gene sequence homology has 99.8 % compared with partial sequence of pCIZ2 fromEnterococcus faeciumL50. Five putative ORFs were concluded by software. The result of alignments indicated two ORFs, repAl05 and repBl05, encoding two putative proteins RepAl05 and RepBl05 of 245 and 178 amino acids respectively. The 2.5 kb fragment of minimal replicon as a stable replicon is feasible for constructing food-grade cloning and expressing vector of lactic acid bacteria.
Optimization of Liquid Fermentation Conditions and Encapsulation for Nattokinase Production
Authors: Zhou Hui Min , Zhang Hong Xing , Xie Yuan Hong , Zhou Ting Ting , Liu Hui , Luo Yun Bo
Published: September 2013

Nattokinase is a potent fibrinolytic enzyme. The composition of the medium for nattokinase production was optimized respectively. Effect of glucose concentration on nattokinase activity and optimal glucose concentration in fermentation process were investigated. L9 (33) orthogonal array design was applied to investigate the effects of Na2HPO4 to NaH2PO4 ratio, CaCl2, MgSO4 on nattokinase activity and search for the optimal concentrations of the three inorganic salts. The results showed that Na2HPO4/NaH2PO4 was the main factor to affect nattokinase activity, then was CaCl2 and MgSO4 in turn. The optimum concentrations of liquid fermentation medium components were as followed: glucose 1% , Na2HPO4 to NaH2PO4 ratio 0.4% : 0.1% , CaCl2 0.01% and MgSO4 0.1%. Under the optimal conditions, the nattokinase activity was equivalent to 871.56 urokinase IU/mL. To mask the smelly flavor, the nattokinase powders were encapsulated. The research will be helpful to the development of nattokinase products.
Determination of Sudan I by High Performance Liquid Chromatography with Immuno-Affinity Column Clean-Up
Authors: Zhu Li Xin , Meng Wei , Qiu Xue Mei , Liu Ren Rong , Xu Ling , Xu Fu Yong
Published: September 2013

To prepare an immuno-affinity column (IAC) for Sudan I, Sepharose 4FF was activated by epichlorohydrin, and the density of epoxy is 80 μmol/g. Then it was coupled with 6-aminocaproic acid. The Sudan I immunoaffinity column was prepared by carbodiimide method in which modified Sepharose 4FF was used as carrier to couple with monoclonal antibody against Sudan I. A reversed-phase high performance liquid chromatographic method was used to determine the samples elution after the IAC cleaning up. Sudan I was determined by HPLC with a retention time of 5.82 min (flow rate of 1 ml/min). The column capacity is 1582.8 ng Sudan I when using 0.3 g Sepharose 4FF. Average recoveries of Sudan I from red chili powder spiked at levels of 0.25-3 mg/kg range from 44.52% to 77.40%. The coefficient of variation is 4.6% to 8.3%. The IAC method was found to be highly effective, sensitive and convenient for isolating the target analyte from sample.
Preparation of the Liquid Crystal Intermediate via Bromo-Reaction of Phenylacetylene and N-Bromosuccinimide
Authors: Miao Zong Cheng , Wang Yi Wei , Zhang Xin , Zhang Lei , Li Yuan Yuan , Wang Zhi Xue
Published: September 2013

An important liquid crystal intermediate of 4'-Bromoethynyl-4-pentyl-biphenyl was synthesized by bromo-reaction using N-bromosuccinimide as brominating agent, 4-Ethynyl-4'- pentyl-biphenyl as raw material, benzoyl peroxide (BPO) as catalyst and carbon tetrachloride (CCl4) as reaction solvent. The effects of reaction variables were systematically optimized to achieve product with yield as high as possible. Under the optimal synthesis condition, where the temperature was 80oC, the mol ratio between 4-Ethynyl-4'- pentyl-biphenyl and NBS was 1:2, the weight rate of BPO to 4-Ethynyl-4'-pentyl-biphenyl was 2.5%, and the reaction time was 8 h, the product attained the best yield of 93.1%.
Aroma Compounds Generated from L-Ascorbic Acid and L-Methionine during the Maillard Reaction
Authors: Yang Xing Zhi , Yu Ai Nong
Published: September 2013

Aroma compounds from the Maillard reaction of the l-ascorbic acid and l-methionine system were investigated. The mixture was heated while stirring at 142±2°C for 2 h in an oil bath at five different pH values (5, 6, 7, 8, or 9). Analysis of the reaction mixture was performed by headspace-SPME–GC–MS technique, and further use of LRI. 27 Components, comprising 11 pyrazines, 5 thiophenes, 6 aliphatic S compounds, 4 furans (non-S-containing) and 1 phenol, were identified. The studies showed that furans (non-S-containing), 4-hydroxybenzo[b]thiophene and 2,3,5-trithiahexane were formed mainly at acidic pH. In contrast, higher pH values could promote the production of pyrazines, acylthiophenes, 2-(isopropylthio)thiophene, methyl butanedithioate and 2,4-di-tert-butylphenol. The effect of pH on the formation of other compounds did not follow a consistent pattern.
Different Temperatures of Frozen Storage Effects on Proteins of Crisp Grass Carp (Ctenopharyngodon idellus C.et V)
Authors: Lin Wan Ling , Yang Xian Qing , Hao Shu Xian , Li Lai Hao , Hu Xiao , Yang Shao Ling , Wu Yan Yan , Zeng Qing Xiao
Published: September 2013

This article focused on the study of frozen storage temperatures effect on protein of crisp grass carp, and then induced changes of texture of crisp grass carp muscle. During frozen storage, lower temperature, better texture of crisp grass carp muscle. The little changes of texture characteristics of crisp grass carp were related to lower changes of drip loss, cooking loss, protein solubility and thermal stability. The results indicated that lower temperature of frozen storage was beneficial to maintain the mastication of crisp grass carp.
Free Amino Acids Fingerprint Analysis for the Quality Evaluation of Oriental Latrine Fly Larvina by RP-HPLC Pre-Column Derivatization Method
Authors: Wu Yu Ping , Chu Fu Jiang , Jin Xiao Bao , Liu Wen Bin , Xu Yin Ye , Zhu Jia Yong
Published: September 2013

A simple and reliable method of high-performance liquid chromatography with pre-column derivatization was developed to evaluate the quality of Oriental Latrine Fly Larvina through establishing chromatographic fingerprint. The separation was performed on a welch Ultimate XB-C8 column with a liner gradient elution of acetonitrile and acetate buffer. The developed method was validated by precision, stability and recovery. This study indicated that the chromatographic fingerprint analysis can be readily utilized as a quality control method for oriental latrine fly larvina.
Study on the Technology of Extraction and Purification of Tea Polyphenols and EGCG
Authors: Gao Yan Hua , Chen Ying , Wang Zhen Xi
Published: September 2013

Four kinds of different methods was used to extract the tea polyphenols (TP) and epigallocatechin gallate (EGCG) from the fresh old age tea leaves. The extraction liquor obtained under the optimal conditions was further purified by membrane filtration, resins absorption and column chromatographic exctration (CCE). The results indicated that the concentrations of TP and EGCG respectively increased to 96.1% and 60.5% after separated by the hollow fiber membrane and resins absorption. And then, after the separation by silica gel CCE method, the EGCG concentration was more than 98%.
Study on Control Technique in Flocculating Separation Process of Fermentation Broth
Authors: Dong Ming , Shao Qiong Fang
Published: September 2013

For reforming jar testing and increasing separation efficiency, separation technology of fermentation broth was studied by controlling the process of flocculation. The tried new system to be operated continuously was composed of the processes of transporting fermentation broth, flocculating the broth and separating the one. The experimental course of controlling the process of flocculation was as follows: the broth was conveyed by a pump and pipeline from fermentation pot to a mixer in which a flocculant and the broth were mixed, afterward the broth flowing from the mixer was flocculated continuously in the column, and then the flocs flowing from the column were separated from the broth by filtrating or centrifugal precipitating. The experimental results showed that the filtration rate of the broth was 65% larger and precipitation rate of the flocs in the broth was 47% larger by the novel separation technology than jar testing. The results offer important evidence not only for reforming intermittent operation into continuous operation in flocculating technology of fermentation broth, and for flocculated the broth to be separated with great efficiency by filtrating or centrifugal precipitating in industry, but also for researching the law between conditions of the separation process and micro-size of the flocs.
Response Surface Optimization of Adsorption Conditions of Cr (VI) from Wastewater by Modified Brewer's Grains
Authors: Jiang Xin Long , Jiang Yi Hua
Published: September 2013

Surface response optimization of Adsorption Conditions of Cr(VI) wastewater by modified brewer's grains with the factors of pH value, adsorption temperature, adsorption time, amount of adsorbent and the response of adsorption rate were studied. The optimal parameters for Adsorption Conditions were of adsorbent concentration of 60 mg·L-1, adsorbent particle size of 60~80 mesh, pH 2.23, adsorbent amount of 3.64 g·L-1, adsorption time and temperature of 1.13 h and 30 °C, respectively. The maximal absorption rate got 97.45%.The modified brewer's grains is a promising, cheap, efficient, new biological materials of adsorption for Cr (VI) in wastewater.
Emergency Treatment Measures for Sudden Pollution Incidents in Source Water with some Contaminants: A Review
Authors: Wang Hong Tao , Jia Xue Bin , Liu Dong Mei , Wang Zhi Wei , Pan Yun Hao
Published: September 2013

Source water polluted by algae, ammonium and organic matter has been studied for many years. Sudden pollution incidents of source water have been reported across the whole country. Seasonal variability of rainfall across China has resulted in floods or droughts, thus incurred the high concentration of algae, ammonium and organic matter, causing severe challenges to the conventional water purification facilities. However, the conventional water treatment process is often unavailable to keep the safety of source water for drinking when sudden pollution occurs. Meanwhile, byproducts are often to be found over the whole treatment process, it is high time that researchers took effective measures to deal with this problem. In the present work, an overview of the recent research dealing with source water suddenly polluted by algae, ammonium and organic matter is presented.
Hydrothermal Biotemplated Synthesis of Amine-Functionalized Mesporous Silica and Adsorption Properties for Lead (II)
Authors: Luo Li Jun , Liu Yong , Li Qiao Ling , Mo Jing Chi
Published: September 2013

By using natural bamboo as biotemplate, we synthesized mesoporous silica by Hydrothermal method followed by calcination at 650°C. And it was functionalized with aminopropyltriethoxysilane (APTS) in dry toluene under nitrogen atmosphere. As-synthesized Amino-functionalized mesoporous silica (NH2-MS) were characterized by scanning electron microscope (SEM), nitrogen adsorption/desorption (BET), Fourier transform infrared spectra (FT-IR).The results indicated that the obtained particles retained the morphology of bamboo and possessed mesoporous structrure. Adsorption measurement results indicates the Pb (II) adsorption isotherm fits Freundlich model and maximum adsorption capacity of 143.4mg/g, the pseudo second-order kinetic model provided the best fit to the experimental data.
Experimental Study about Modified Fly Ash of Treating Phosphorus Wastewater
Authors: Cao Hong Xia , Tao Ying , Liu Bian Ling , Feng Qing Zhen
Published: September 2013

The research examines the phosphorus removal efficiency of modified fly ash on landscape water and its influencing factors, and also study the actual eutrophication landscape water . Results show that when the solution pH is controlled in the range of 5 ~ 9, agitation speed is 150r. min -1and the additive amount modified fly ash is 1.2 g·L-1, the oscillation adsorption time and adsorption temperature are respectively 60 min and at room temperature, for the raw water whose initial concentration of total phosphorus is 10.0 mg·L-1 , the adsorption rate is 98.4%,which has a good adsorption effect. The test about Real urban landscape water shows total phosphorus is 0.35 mg·L-1 , when the additive quantity of modified fly ash is 200 mg·L-1, the concentration of the water reduce to the level of 0.01 mg·L-1 ,which is up to the first class of landscape water quality standard (GB18921-2002)
Base on Set Pair Analysis for Rural Domestic Refuse Treatment Technology Evaluation
Authors: Zhang Jun , Jia Chun Rong , Xia Xun Feng
Published: September 2013

Rural domestic refuse treatment technology is a complex uncertainty problem, which should consider not only the technical performance of rural domestic refuse treatment technology, but also its suitability for the social, economic and environmental situation of particular rural region. In this paper, Set pair analysis theory and information entropy method is used to evaluate rural domestic refuse treatment technology option.A case study was conducted in Wanxing Village in Chengdu City, and the evaluation results matched the local conditions. The method can serve as the decision analysis tool for sewage treatment technology demonstration and promotion in rural areas.
Effects of Red Mud on Growth of Alternanthera philoxeroides
Authors: Zhang Fang Juan , Zhang Hua Yong , Ding Wen Juan , Wang Li Jun
Published: September 2013

The effects of red mud on growth of Alternanthera philoxeroides were examined. A. philoxeroides were planted at density of five individuals/ (0.2*0.2 m2) in wastewater with five dosage (0, 2, 5, 7 and 10 g/L) of red mud, and the experiment was carried out from December, 2012 to January, 2013. Our results revealed that it showed significant effects (p<0.05) of treatment by-red mud dosage on internode numbers before and after processing; significant differences were also shown in leaf numbers under red mud concentration of 10g/L comparing with 0 and 5 g/L. Also, stem diameter had a significant difference between 10 g/L and 0g/L of red mud concentrations. Leaves fell off a lot, and root-shoot ratio was only 0.2-0.3, significantly lower than the wild free state. These results suggested that the growth of A. philoxeroides used for sewage treatment added red mud for auxiliary were affected by red mud. By influencing the elongation or increase of some traits, a relatively higher concentration of red mud could slow down their growth.
Preparation and Characterization of MCM-41 Mesoporous Silica Functionalized with Sulfonic Acid Groups
Authors: Ding Xue , Yu Xi Chang , Sun Hai Xia
Published: September 2013

Mesoporous molecular sieve MCM-41 was modified by using 3-mercaptopropyltriethoxysilane as a coupling agent and MCM-41 functionalized with sulfonic acid groups was prepared. The prepared product was characterized by X-ray diffraction, Fourier transform infrared spectroscopy, nitrogen adsorption-desorption technique and temperature programmed desorption. The results showed that during the process of modification the frameworks of the molecular sieve were not destroyed, the channel has ordered property. SH group was successfully grafted to the surface of channels of the molecular sieve. The acid amount on the mesoporous material functionalized with sulfonic acid groups reached 0.755mmol/g, showing a potential application foreground as a catalyst.
Study on the Preparation of Non-Fired Bricks by Solidified Dredged Soil
Authors: Zhang Xia Hong , Zhang Xia Zhen , Ni Jing Xu , Yan Yong Guo , Dong Zhi Liang
Published: September 2013

A non-fired brick were manufactured by solidification of modified dredged soils. A novel solidified agent based on industrial wastes was prepared. A typical manufacture process of the non-fired brick comprised of mixing, stirring, tamping and maintaining. Several tests and measurements were conducted according to Chinese Professional Standard and National Standard. The results showed that the non-fired brick exhibited excellent performances and low toxicity. The non-fired brick was found to be a suitable material for use in the civil architecture.
Influence of Red Mud-N, P Coated Particles on Micro-Environment in Contaminated Ore Soil
Authors: Luo Hui Li , Luo Lin , Liu Yan , Yan Hong Ling , Li Ya Zhen
Published: September 2013

In this research, improved granulation based on partly hydration of red mud was combined with gelling materials. Nitrogen and phosphoric salt were added in during granulation. Soil samples were collected periodically to evaluate the changes of pH, Z-potential and enzymatic activities of urease, catalase and alkaline phosphatase of soil. And the correlations among them were analyzed. Increase of pH that was caused by strong alkali was slowed by applying of composite particles. Dissolved phosphorus greatly inhibited all enzymatic activities while reinforcing restoration.
The Degradation of Organophosphorous Pesticide Wastewater by Sonophotocatalytic Oxidation Technology
Authors: Li Zhao Yan , Song Wei , Zhang Li
Published: September 2013

Organophosphosphous pesticides wastewater was degradated by sonophotocatalytic oxidation technology,and some factors affecting sonophotocatalytic oxidation reaction were studied in details such as different degradation modes,the time of degradationinitial solution concentration initial pH valuethe amount of catalyst and the effect of Fenton,etc.In the end the optimal conditons were determined.The conclusion we drawed was that the optimal time of degradation was 100min initial solution concentration was 100mg/Lthe amount of catalyst AgBr/TiO2 was 0.6g,moreover the adding of Fenton could greatly enhance the degradation rate.
Impact of Soil Surface Charge Properties on Migration Behavior of Radioactive Uranium, Strontium and Cesium
Authors: Zhang Pei Cong , Ni Shi Jun , Qiu Ke Hui , Li Jun Feng , Deng Miao , Qiu Yu Chong
Published: September 2013

Static adsorption experiments were conducted to understand the impact of soil surface charge characteristics, such as pH, AEC and CECp values, on migration behavior of radioactive Uranium, Strontium and Cesium. The results demonstrate that distribution coefficient of Uranium (U-Kd value) increases with decreasing initial pH of solution, and increases with increasing AEC values for acidic clay and silty clay that were studied; distribution coefficients of Strontium and Cesium appear to be positively correlated with CECp values of and total contents of montomorillonite and illite in the soil.
Photocatalytic Properties of Nitrogen-Sulfur Co-Doped TiO2 Films Coated on Glass Fiber
Authors: Noophum Benjamas , Sikong Lek , Kooptanond Kalayanee
Published: September 2013

The photocatalytic N-S co-doped TiO2films coated on glass fibers were successfully prepared by sol-gel, dip-coating and calcination methods. The effect of doping concentration on crystalline size, microstructure, morphology, optical property and photocatalytic activity was investigated. The films were characterized by XRD, SEM, EDS, UV-vis DRS and FT-IR. The photocatalytic activity was evaluated by the degradation of methylene blue (MB). N-S co-doping has an effect on light adsorption wavelength shifted to visible light region which can lower the band gap energy of N-S co-doped due to the replacement of O atom in TiO2by N and S atoms to form Ti-O-N and Ti-O-S structures. Thiourea, a source of nitrogen and sulfur could increase viscosity of sol used for coating on glass fibers, resulting in larger particles size and more surface roughness of the doped films.TiO2films with 5 mol% N-S co-doped showed an excellent photocatalytic performance under fluorescent light irradiation.
Adsorption Removal of Ni(II) from Aqueous Solution by Raw and Acid-Activated Kaolinite
Authors: Wei Shi Yong , Deng Xu Hong
Published: September 2013

X-ray diffraction (XRD), scanning electron microscopy (SEM), nitrogen physical adsorption, potentiometric titrations and batch adsorption experiments were employed to characterize the crystal structure, micromorphologies and surface properties of raw kaolinite (RKao) and acid-activated kaolinite (AAKao). Compared to RKao, the particle size of AAKao became smaller, but the specific surface area (SSA), cation exchange capacity (CEC) and surface negative charge at pH 5.5 increased. The adsorption capacity (qmax) for Ni (II) of RKao and AAKao was 3.25 mg/g and 5.09 mg/g, respectively. The adsorption data for Ni (II) by RKao and AAKao could be fitted by Langmuir model (R2 =0.991 and 0.989, respectively).
Hydrogen-Rich Gas Formation Characteristics under Microwave Catalytic Pyrolysis of Sewage Sludge
Authors: Yu Wei Chao , Deng Wen Yi , Su Ya Xin
Published: September 2013

Microwave catalytic pyrolysis of sewage sludge were conducted on a single mode microwave reactor. The effects of CaO and steam on hydrogen-rich gas formation characteristics were analyzed. The results indicated that the CaO can improve the formation of H2and CO. When CaO in sewage sludge increased from 0 to 0.75 g/(g dried sludge), the H2and CO concentration increased from 62 vol.% to 77 vol.%, while CH4and CO2concentrations decreased from 28 vol.% to 9 vol.%. The steam can also improve the formation of H2and CO, with 1.59 g/min of the steam flowrate, the H2and CO concentration increased to the maximum of 81 vol.%, and the CH4and CO2concentration decreased to the minimum of 16 vol.%. When the steam gasification was coupled with the CaO catalyzing, the H2concentration can reach to 61 vol.%, which was 79.3% higher than the experimental conditions absent of steam and CaO.
Study on the Effect of Adiabatic Flame Temperature on NOx Formation Using Ethanol Gasoline Blend in SI Engine
Authors: Masum B. M. , Kalam M.A. , Masjuki H.H. , Palash S. M.
Published: September 2013

Active research and development on using ethanol fuel in gasoline engine had been done for few decades since ethanol served as a potential of infinite fuel supply. This paper discussed analytically and provides data on the effects of compression ratio, equivalence ratio, inlet temperature, inlet pressure and ethanol blend in cylinder adiabatic flame temperature (AFT) and nitrogen oxide (NO) formation of a gasoline engine. Olikara and Borman routines were used to calculate the equilibrium products of combustion for ethanol gasoline blended fuel. The equilibrium values of each species were used to predict AFT and the NO formation of combustion chamber. The result shows that both adiabatic flame temperature and NO formation are lower for ethanol-gasoline blend than gasoline fuel.
China's Industrial Structure Adjustment Path on Low-Carbon Economy
Authors: Cao Yong Li , An Ning Ning , Yao Na
Published: September 2013

The paper elaborates development strategy of low-carbon economy in China on the basis of describing the relationship between low-carbon economy and industrial structure as well as industrial structure influencing factors, through analysis by China national conditions and the difficulties and obstacles encountered in the process of reducing carbon emissions.To some extent, it can provide theoretical support and practical guidance for industrial structural transformation which is based on the development of low-carbon.
Supercritical Dyeing Polyester Fibres with Disperse Dyes
Authors: Huang Xu
Published: September 2013

Three thiadiazolyl azo dyes were used as disperse dyes for polyester fibres. The dyeing medium was supercritical CO2. The experiment conditions were 80 to 120°C and 2500 to 4000 psi pressures. The dyeing results were compared with traditional dyeing in water. The results shown that the disperse dyes have high substantivity towards polyester fibres and very good fastness.
Pretreatment Optimization of Poplar Green Liquor Pretreatment-Kraft Pulping
Authors: Chen Xiao Hong , Sun Guang Wei , Zhou Jing Hui , Han Ying
Published: September 2013

Green liquor has lower hydroxide concentration and higher sulfidity, which makes it a better choice for modified alkali cooking. This paper studied process parameters of pretreatment stage on pulping properties of poplar green liquor pretreatment-Kraft pulping process. Conditional experiments with green liquor charge of 0.50L/kg, 0.75L/kg, 1.00L/kg and 1.25L/kg, maximum pretreatment temperature of 95°C, 105°C, 115°C and 135°C, and holding time of 30min, 60min and 90min, were carried out. The results shows that optimal pretreatment conditions are as follows: green liquor charge, 1.00L/kg; maximum pretreatment temperature, 115°C; holding time, 60min; and wood to liquor ratio, 1:4.
Surface Modification of Nanocrystalline Cellulose and its Application in the Deinked Pulp
Authors: Li Jing , Xu Qing Hua , Jin Li Qiang
Published: September 2013

In this study, nanocrystalline cellulose (NCC), isolated from the bleached aspen kraft pulp, was surface modified using borate. The resultant nanocrystal suspensions, namely B-NCC, were characterized by conductometric titration and atomic force microscope (AFM). B-NCC was then applied as a retention aid in the bleached old newsprint deinked pulp. The results showed that the modification process led to a negative increase in surface charge density, while the particle size was not changed. The fines retention and pulp drainability were increased when the B-NCC was used either alone as the monocomponent retention aid, or together with cationic polyacrylamide (CPAM) to constitute a microparticle retention system. The microparticle retention system gave better retention and drainage rate, with the maximum values of 90.5% and 3.5 ml/s, respectively.
Surface Hydrophilicity Modification of Poly(Ethylene Terephthalate) Fabric by UV/TiO2
Authors: Li Ming Yu , Deng Ting Ting , Liu Shu Xian , Zhang Feng Xiu , Zhang Guang Xian
Published: September 2013

The hydrophilic modification of poly (ethylene terephthalate)(PET) fabric is significant for industrial production. Its studied by ultraviolet radiation, nanoTiO2, H2O2 and NaOH. The results show the best condition is 3%nanoTiO2, 5%H2O2 and 3%NaOH, under 1000W UV radiation. With only about 30~35 minutes irradiation the PET fabric is nearly to wettable. For 40 minutes irradiation is super hydrophilic, the water contact angle of modified PET fabric can decrease to zero in 3 seconds. The wettability of modified PET fabric was examined. It shows the water absorption of modified PET fabric increase from 85% to 104%, and the capillary rise height can reach from 0.2 to 6.2 cm. Meanwhile the broken strength and elongation change of modified PET fabric tests show its mechanical and physical properties keep good.
Kinetic Study on the Transport of Chromium(III) by Emulsion Liquid Membrane
Authors: Xie Yao Zhong , Fei De Jun , Dang Ya Gu
Published: September 2013

The interfacial reactions and thermodynamic properties of the emulsion liquid membrane on separation and concentration of chromium (III) were discussed. Interfacial chemical reaction equations of membrane phase with P204 and mass transfer mechanism of ELM system were determined. The extraction reaction enthalpy is 11.41 kJmol1, while stripping reaction enthalpy is-143.65 kJmol1, were obtained by investigating reaction temperature on the distribution ratio under two different conditions. So extraction is an endothermic process and stripping is an exothermic process. And the main driving force of the separation system is the concentration gradient of hydrogen ion between external and internal phase interface.
Experimental Study on Optimization of Wet Desulfurization of Wet Ball Mill System
Authors: Zhou Xiao Xiang , Zhang Xue Ying , Dong Xue Feng
Published: September 2013

In this paper, the output can not meet the operating requirements problems of power plant desulfurization device wet mill system operation, site of the optimization test of wet mill system, optimization and adjustment, wet mill output and fineness of limestone reached or better than the design value, the operation time was shortened, and achieved good economic and social benefits. With reference to the same type of wet overflow type ball mill.
The Influence of the Number of Impeller’s Blade on the Performance of Multistage Centrifugal Pump
Authors: Yi Ling , Li Zhi Peng , Chen Yan Hui , Hong Shun Jun
Published: September 2013

Abstract: In order to understand the relationship between the number of blade and the performance of the self-balance multistage centrifugal pump’s first stage impeller internal flow characteristics, Reynolds Navier-Stokes equation and κ~ε turbulence model are used for numerical simulation. The objects of numerical simulation are five self-balance multistage centrifugal pump’s first stage impellers, the blade number of them is 4，5，6，7，8.Under the rated flow ,the numerical simulation obtain five kind of impeller inner flow field distribution , Through the comparative analysis ,when the number of blade is 4,8,the flow of the impeller’s inner and pressure distribution become chaos ;And, the number of blade is 5,6,7, With the increase of blade number, the impeller internal flow are smoother，the head and efficiency are enhanced correspondingly.
Structural and Optical Properties of ZnCoO Thin Film Prepared by Electrodeposition
Authors: Cao Ping , Bai Yue
Published: September 2013

An oxide diluted magnetic semiconductor, Co doped ZnO thin film was successfully fabricated by cathodic electrodeposition method. X-ray diffraction studies demonstrate that the ZnCoO thin film indicates that the wurtzite structure. X-ray photospectroscopy studies suggested Co ions have a chemical valence of 2+. Optical absorption spectrum further confirmed Co ions have been doped into ZnO crystal lattice successfully with substituting positions of Zn ions. In photoluminescence spectrum, the UV emission band shifted to low energy side because of the doping effect.
Modification of Barium Cerate by Heavy Ion Irradiation
Authors: Khromushin Igor V. , Aksenova Taтiana I. , Tuseyev Turgora , Munasbaeva Karlygash K. , Ermolaev Yuri V. , Ermolaev Victor N. , Seitov Arman S.
Published: September 2013

The effect of irradiation with heavy ions Ne, Ar, and Kr of various energies on the structure and properties of ceramic barium cerate doped with neodymium and annealed in air at 650°C for 7 hours is studied. It is noted that blistering was observed on cerate surface during its irradiation by low energy Ne ions, whereas it was not observed under low-energy Ar and Kr ions irradiation. Irradiation of the cerate with high energy ions caused partial amorphization of the irradiated surface of the material, while the structure of the non-irradiated surface did not change. In addition, the irradiated surface of the cerate endured solid-phase structural changes. Thus, upon high-energy ions irradiation in the range of Ne, Ar, Kr the cerate surface resembled the stages of spherulite formation - nucleation, growth (view of cauliflower), formation of spherulitic crust, respectively. The increase in water molecules release and reduction of molecular oxygen release from the barium cerate, irradiated by high-energy ions is found during vacuum constant rate heating. It is concluded that cerates undergo changes to the distances significantly exceeding the ion ranges in these materials. Features of high-energy ions influence on thermal desorption of carbon dioxide from cerates show, apparently, the formation of weakly bound carbonate compounds on the cerate surface in the irradiation process.
Cyclic Aryl Ketone Oligomers Containing the Iso-Phthaloyl Moiety: Synthesis and Ring-Opening Polymerization
Authors: Hu Li Song , Wu Jiang Yu , Guo Qing Zhong
Published: September 2013

Preparation of cyclic aryl ketone oligomers containing the iso-phthaloyl moiety by Friedel-Crafts acylation reaction is described. These cyclic oligomers are characterized by a combination of MALDI-TOF-MS and NMR analyses. The cyclic aryl ketone oligomers readily undergo anionic ring-opening polymerization in the melt by using potassium 4, 4-biphenoxide as the initiator, affording linear, high molecular weight poly (ether ketone) s with excellent thermal stability.
Synthesis, Characterization of Novel π-Conjugated Polymers Acceptor 5,6-bis(heptyloxy)benzo[c][1,2,5]thiadiazole
Authors: Sun Xiao Xia , Zhuang Xiao Xiao , Hu Yu
Published: September 2013

Monomers based on 2,1,3-benzothiadiazole bearing solubilizing side chains have been synthesized in high yields over four steps from readily available starting materials. A multistep synthesis of the electron-poor 5,6-bis (heptyloxy) benzo [[1,2,thiadiazole are presented. The new deficient acceptor has good solubility in organic solvents to permit an appropriate coating process.
Separation and Identification of Yeast Strain from Pit Mud of Luzhou-Flavor Liquor
Authors: Wei Chun Hui , Huang Zhi Guo , Luo Hui Bo
Published: September 2013

A yeast strain was isolated from pit mud of Luzhou-flavor liquor. After observing colony characteristics and microscopic examination, the yeast strain was identified using Biolog automated microbes identification system, the result shows that the yeast strain is Pichia jadinii. This test separated and obtained successfully a strain of yeast in pit mud of Luzhou-flavor liquor, after purification, used Biolog System for its taxonomic identification, and determined its species, provide basis data and information for the analysis of alcoholic microbe.
A Bio-Material of Polymer Beads Based on Antibody Immobilization via Oxidized Glycochains Linkage for Flow Cytometric Suspension Array
Authors: Li Sha , Li Lai Yang , Li Jie , Zhou Lei Ji
Published: September 2013

A preparation of a bio-material of polymer beads used for immuno-assay is presented, in which the probe antibody is site-specific immobilized on the polystyrene microbead by the surface hydrazide activation and the oxidized glycochains linkage of antibody. Using adipic dihydrazide, free hydrazide-bearing matrix was acquired on carboxyl polystyrene microbead. An iron (III)-phenanthroline spectrophotometric method was developed to evaluate the activation efficiency. The dependence of probe antibody oxidization on the reaction time and the oxidant concentration was investigated. Also, an alternative strategy of antibody immobilization via traditional COOH/-NH2 linkage was illustrated for a comparison with this site-specific immobilization in the aspects of the total antibody binding amount and the site-specific binding amount. The results showed that the site-specific efficacy using glycochains linkage-based binding was three times better than that using traditional amino-based binding, which indicated a higher sensitivity for application in immuno-assay.
Studies of Soybean Peptides by Solid-State Fermentation with Multi-Strains
Authors: Qin Xiu Li , Zhao Li Hui
Published: September 2013

In this paper, the condition of aspergillus niger and the bacillus subtilis mixing fermentation to produce soybean peptides was studied. The results indicated that the best fermentation condition of the aspergillus niger and the bacillus subtilis mixing fermentation to produce soybean peptides is that: the initial pH of the culture medium is 8.0, the proportion of mixture strains (aspergillus niger vs bacillus subtilis) is 2 to 1,the fermentation temperature is 30°C and the fermentation time is 80 hours. In this condition the degree of hydrolysis of the fermentation bean pulp is 36.5%.
Isolation and Identification of Hyperoside in Abelmoschus manihot Flower
Authors: Qiu Yan , Wang Ming Zhu
Published: September 2013

Abelmoschus Manihot (L.) Medic flowers are traditionally used for food and medicinal materials. With the aim of acquiring the best method of isolating hyperoside from total flavone in A. Manihot flowers, this study investigated the effects of different eluted factors on separating hyperoside in total flavone of crude extracts. Gradient elution was used to separate the total flavone of ethanol extraction. The eluates were isolated by silica gel thin-layer chromatography (TLC) and identified by HPLC. The results showed that the elution components (chloroform: methanol = 50: 50) isolated by TLC (developing agent ethyl acetate: formic acid: water = 8:3:1) presented a clear light yellow stripe which was identified as hyperoside by HPLC.
Removal of Organic Sulfur in Two Coals in Microwave and Ultrasonic Co-Enhanced Oxidative Process
Authors: Pu Zhao Ting , Mi Jie , Kang Jian
Published: September 2013

Microwave heating has been used in desulfurization of coal. Removal of organic sulfur and organic sulfur forms alterations of Xishan (XS) coal and Yunnan (YN) coal was investigated under microwave and ultrasonic irradiation. The results showed the optimum conditions for desulfurization were 50 min and 560 W for microwave and ultrasound for both coals. The desulfurization rate was maximum 23.53% for XS coal and 76.58% for YN coal. The effect of combining microwave and ultrasonic irradiation on desulfurization was stronger than simple microwave irradiation. The content of sulphone sulfur in coal was increased from the XPS after microwave and ultrasonic co-enhanced oxidative desulfurization.
Analysis and Control the Pressed into Defects of Acid Rolling Strip Foreign Body
Authors: Yang Jian Wei , Wu Jing
Published: September 2013

There are two reasons to causes of defects of acid rolling line equipment and hot-rolled raw materials problems, so it is necessary to analyse the cold-rolled strip surface foreign body pressed into the defect microstructure and composition. It is found that this defect can be eliminated by improving the quality of the raw material, controlling strip shape, making reasonable squeezed roll transformation system, making the implementation of effective management of the full range of roll surface, carrying out the whole process of clean production, effectively controlling of the cold-rolled strip foreign body pressed into the generation of defects.
Dynamic Simulation of Petlyuk Column for Separation of Ternary Mixtures
Authors: Wu Lian Ying , Zhao Ran Ran
Published: September 2013

The Petlyuk distillation configuration has received considerable attention because of its efficiency to reduce the energy required for the separation of ternary mixtures. The dynamic properties of fully thermal coupling distillation column, which separates ternary mixtures of H2O, ethylene glycol (EG), diethylene glycol (DEG), are analyzed. The possible control configurations were investigated using Relative Gain Array (RGA) Analysis and dynamic simulation. The results indicate that the provided control scheme is able to produce a stable control response for thermally coupled distillation systems and shows better dynamic responses than the conventional distillation sequence.
Thermal Stability and Crystallization Behavior of PP/Organoclay Phase Change Composites
Authors: Ye Ying , Wang Kun Yan , Chang Ge , Jiang Qian Ying
Published: September 2013

Polypropylene/organoclay modified by dodecanol phase change material were prepared by melt blending method. The thermal stability and crystallization behavior was studied by thermogravimetry (TG), differential scanning calorimetry (DSC), and X-ray diffraction (XRD). TG results indicated the window of processing of PP could be improved by adding small amount organoclay modified by dodecanol to the blend. DSC showed the organoclay modified by dodecanol affected the crystallization behavior of PP as heterogeneous nucleation agent. XRD results show that the organoclay modified by dodecanol does not change the crystal structure in the blends but only decrease the intensity of the diffraction peak.