bluuebunny/crossref_metadata_2025 huggingface dataset:
Adsorption Properties of Phenol and Aniline Removal by Poly Aluminium Chloride from the Aqueous Phase
Authors: Cheng Wang Bin , Ding Jie , Liu Xian Shu , Liu Chun Miao
Published: June 2014

In this paper, poly aluminium chloride (PAC) was used to remove phenol and aniline from the aqueous phase .The adsorption properties of this process was investigated by zeta potential measurement, infrared spectroscopy and the analysis of pollutants structure and adsorption kinetic. The results described that not only electrostatic attraction but hydrogen adsorption were the main mechanism of both the phenol adsorption and the aniline adsorption. The pseudo second-order kinetic equation could best describe these two adsorption kinetics. The calculated activated energy of adsorption processes of phenol and aniline were 47.2KJ/mol and 44KJ/mol, respectively, which indicated that the adsorption process was chemisorption. Friedrich model was fitter to describe the adsorption isotherm of these two adsorption processes.
Research of Denitrifying Dephosphatation in A2ON Process
Authors: Guo Li Fang , Wu Chang Hang
Published: June 2014

In order to investigate the potential of sequencing batch biofilm reactor (SBBR) technology of two-sludge system for denitrifying dephosphatation (A2ON process),we build a tab-scale experiment .Then find that the simultaneous removal of phosphorus and nitrogen in the two sludge system is possible .By the control of COD/TN ratio ,highly effective simultaneous nitrification and denitrification is achieved in the A2ON system.And the ratio of denitrification is 85%, the ratio of dephosphatation is 87%.It also demonstrates that the process is stable ,at the same time decrease the effect of dephosphorization and denitrification by the limited carbon source.
Study on the Loadings of Co3O4 Supported on rGO as the Catalyst for Degradation of Orange II in Water by AOPs Based on Sulfate Radicals
Authors: Shi Peng Hui , Zheng Hon Gai , Yao Wei Feng , Wu Qiang , Tan Si Yu , Pang Hong Jian
Published: June 2014

A variety of loadings of Cobalt oxide (Co3O4) was successfully supported on the reduced graphene (Co3O4/rGO) as the catalyst to activate peroxymonosulfate (PMS) to generate sulfate radicals (SO4−•) for degrading Orange II in water. The crystal structure of Co3O4/rGO with different loadings was characterized by X-ray diffraction (XRD), and their catalytic activity was compared in the same conditions. The result showed that the catalyst has an optimum Co3O4 loading. Using the 70.7% loading of Co3O4 in Co3O4/rGO as the catalyst, 100% decomposition could be achieved within 4 min with 1 mM Orange II, 0.05g/L catalyst, and 10 mM PMS.
Treatment of Phenol WasteWater with Modified Coal Fly Ash-Fenton Reagent
Authors: Wang Jing , Li Hao Jie , Cheng Qian Kun , Yan Xiao Tong , Cao Ai Qing , Tan Qing You
Published: June 2014

Autonomous coal fly ash modified by vitriol (H2SO4) was used to treat Phenol Waste Water. The treatment influences were determined by single-factor experiment and the prioritizing importance and optimizing combination of the influences were studied using orthogonal experiment. We found that the prioritizing importance of the influencing factors was as follow: dosage of ferrous sulfate (FeSO4) > dosage of hydrogen peroxide (H2O2) > initial concentration of phenol > PH > the dosage of modified coal fly ash. The optimizing combination of the influences was 5 wt.% FeSO4, 1 mL ; 3 wt.%H2O2, 7 mL; PH=5; initial concentration of phenol , 300 mg/L and the dosage of modified coal fly ash, 200 mg/L. Under the condition above, phenol removal rate was 99.46%.
Impact of Different Organic Fertilizers on Soil Humus, Microbiomass and Quality of Cabbage
Authors: Li Ji Jin , Li Chuan Zhang , Gao Li Juan , Liu Ben Sheng , Liu Dong Sheng , Zou Guo Yuan , Xu Jun Xiang , Li Shu Mei , Sun Qin Ping
Published: June 2014

A field experiment was conducted to determine effects of 6 treatments including without fertilization (CK), conventional fertilization (CM), corn straw plus manure (SM), peat plus chicken manure ( PM), mushroom residue plus chicken manure (MM) and high level of chicken manure (HM) on different soil active organic carbon and carbon pool management index. The results showed that fertilization of chicken manure is difficult to prompt activation of soil that contains plenty of fulvic acid, but combined application of different organic fertilizers not only can significantly increase the soil organic matter content, also can balance the proportion between the components of soil humus, improve Hu/Fu. Compared to CK treatment after fertilization, there was a narrow range in HA/TOC, FA/TOC, HM/TOC of HM treatment that was only 4%-8%, but variations of 12%-25% was produced by SM, PM, MM treatment, and its Hu/Fu increased 98% - 292% compared with HM treatment; The quantity of soil microorganisms is enhanced mostly by the treatment of HM, and the increase of bacteria and fungi was the maximum, but the quantity of actinomycetes was increased mostly by MM treatment; high level of chicken manure treatment can increase the risk of nitrate accumulation, but combined application of different organic fertilizers can significantly reduce the nitrate accumulation of vegetables, improving the quality of vegetables. Compared with HM treatment, MM treatment reduces the nitrate content of 45%. Therefore, the results demonstrated that paid attention to the selection of organic fertilizers and its combined application not only would achieve better fertilizing effect, also would better improve the quality of vegetables in organic agricultural production.
Ecological Sulphur Dyeing and Biotreatment for Cotton Fabric
Authors: Yao Ji Ming , Dou Chun Xiao
Published: June 2014

Selected reducing agents were applied to cotton knitting dyeing with C.I. sulfur black 1, and followed by acid cellulase treatment. The K/S value, fuzz removal rate, sulphurs content of fabric and COD value of the residues was measured to evaluate the cellulase performance. The results show that minimum sulphur content detected when glucose was used as reducing agent, which exhibited maximum fuzz removal, whereas maximum sulphur content detected when sodium sulfide was used as reducing agent, which gave minimum fuzz removal. It is concludes that ecological sulfur black dyeing with sulphur-free reducing agent could decline the suphur content in the fabric and promote cellulase performance.
Ecological Floating Bed Applied to Control Nutrients and Cyanobacteria Bloom in the Pond Water under Intensive Aquaculture
Authors: Tao Ling , Zhu Jian Qiang , Li Gu
Published: June 2014

An innovative ecological floating bed was designed and used for intensive aquaculture pond to improve water quality, which integrated porous ceramsite, soil substrate and plants. Put the floating bed into intensive aquaculture ponds, and investigate the nutrients and phytoplankton community structure in the ponds for a whole culture cycle. The results showed that TP and CODMn were significantly lowered in those ponds with innovative ecological floating bed, and their reduction rate is separately 39.52% and 22.86%; Cyanophyta and Microcystis densities were significantly reduced by 39.52% and 22.86% in July. The study also indicated that the innovative ecological floating bed is high efficiency for intensive aquaculture pond in control of the nutrient and cyanobacteria bloom.
Synthesis of Novel Phosphite Ligands and their Application in Environmental Friendly Catalysis
Authors: Zhao Yu Liang , Hou Lan Xiang , Zhou Li , Zhang Wen Zhi
Published: June 2014

In this paper, propylene oxide has been first used to modify octylpolyglycol phenylene phosphite (OPGPP). A novel thermoregulated ligand OPGPP-Rh was synthesized for enlarging the application range of thermoregulated phase separable catalysis (TPSC) proposed by us. The ligands being studied have distinct critical solution temperature (CST) in some organic solvents. The CST of OPGPP (EO+PO=26+6) is 70°C in heptane. The authors further investigated the catalytic activity, separation and recycling efficiency of rhodium complex for hydroformylation of 1-octene in the catalytic system with CST. The optimal reaction conditions were as follows: T=100 °C, p=6.0MPa, CO:H2=1:1, reaction time of 5 hours, n (substrate to Rh)=1000, the solvent of heptane. Under the above conditions, the conversion of 1-octene and yield reached 90% and 88%, respectively. The catalyst could be recycled for five times without obvious loss in catalytic activity.
Triphosgene as a Safe and Environment-Friendly Carbonylation Reagent for the Preparation of 2-Benzimidazolone
Authors: Yi Wen Bin , Luan Fang , Xiu Jian Min , Jiang Lv Qi , Cai Chun
Published: June 2014

2-Benzimidazolone and their derivatives which have a wide range of biological and pharmaceutical activity are important intermediates for organic synthesis. Reported synthetic methods mostly involved unfriendly materials like phosgene, dimethyl carbonate and urea. This paper developed a novel method for the synthesis of 2-benzimidazolone by the reaction of o-phenylendiamine with triphosgene (BTC) instead of phosgene. BTC is a safer solid and easier to handle compared to phosgene. BTC can greatly reduce risks to both human health and the environment.
Evaluation of Modified Isobutylene-Isoprene Rubber Cryogels as Sorbents for Oil Removal
Authors: Chai Wen Bo , Liu Xiao Yan , Zhang Xin Ying , Zou Jun Chen , Dong Li Fei
Published: June 2014

Two new kinds of modified isobutylene-isoprene rubber (IIR) oil absorbers were successfully prepared via freeze-thaw method. In order to further improve IIR oil-sorbents performance, graphite and nanosilica were chosen as modifiers. The cryogels were prepared cross-linking of IIR containing modifier in benzene at-5 °C, using sulfur monochloride as crosslinker. The modified IIR structures were characterized by using scanning electron microscopy (SEM) and contact angle analysis (CA). The results show that graphite-modified IIR exhibit much higher uptake capacity than silica-modified. The sorption capacity of the best graphite-modified sample reaches 19.68 g.g-1 for crude oil, 19.98 g.g-1 for diesel and 19.50 g.g-1 for lubricating oil, respectively. The adsorbed liquids can be removed by centrifuging and the recovered materials could also be used more than 30 cycles. This study demonstrated graphite-modified IIR are more excellent and recommendable materials for oil removal.
Effect of Shear Stress on Detachment in Biofilm Reactor under Low C/N Ratio
Authors: Jun Yin , Xu Heng Juan
Published: June 2014

The aim of this study is to evaluate the effect of shear stress on detachment and nitrification process in a mixed-population biofilm. The biofilm was grown under constant flow condition with low C/N ratio. During the experiment, ammonium oxidation rate reached above 99%. Sloughing events happened mainly under constant hydrodynamic condition. Detachment experiment showed that it’s not possible to control the occurrence of sloughing events by controlling shear stress. Pyrosequencing analysis of the biofilm showed that Proteobacteria and Bacteroidetes were the two most abundant phyla, but detachment would influence the relative abundance of AOB and NOB in biofilm to affect the nitrification process.
Biodegradation of 17α-Ethinylestradiol in Sediment/Water Systems Affected by Two Different Rhamnolipidic Homologues
Authors: Guo Yan Ping , Lin Hui
Published: June 2014

The shake flask aerobic biodegradation experiment was used to study the effect on biodegradation of 17α-ethinylestradiol (EE2) in the sediment/water system affected by mono-rhamnolipid (RL-F1) and di-rhamnolipid (RL-F2). The results showed that RL-F1 and RL-F2 had no inhibitory effect on EE2 biodegradation. The effect of RL-F1 on enhanced biodegradation of EE2 was larger than that of RL-F2. In 6 mM and 10 mM of the rhamnolipidic functioned systems, EE2 biotransformation rates affected by RL-F1 were respectively 7.6 and 8.2 times of those of RL-F2 corresponding systems. The accumulation and change rule of the intermediate metabolites M.1 with the polarity greater than EE2 and M.3 with the polarity weaker then EE2 in the biodegradation process were analyzed. In the RL-F2 systems, the time for the accumulative amounts of M.1 and M.3 up to the peak was correspondingly lagged and their output was relatively lower. The testing result of rhamnolipids in the sample showed that RL-F1 was more biodegradable than RL-F2. The bioavailability of di-rhamnolipidic micelle solubilized with EE2 was inferior to that of mono-rhamnolipid, making the organic uptake and metabolism process of microorganisms slow down.
The Composition and Application of UV-Curable Adhesive
Authors: Xiao Zheng
Published: June 2014

UV-curable adhesive has the characteristics of energy conservation , environmental protection and fast curing. As countries around the world pay more and more attention to the environment problem , the development of UV curable adhesive is also growing rapidly. This paper introduces the composition of UV curable adhesive (prepolymer ,active diluent, photoinitiator, additives), and introduces the UV-curable adhesive several huge potential application fields in detail.
Experimental Study on Supercritical Water Oxidation of Paper Mill Sludge
Authors: Qian Li Li , Wang Shu Zhong , Zhang Jie
Published: June 2014

Paper industry produces large amounts of sludge with about 65wt% moisture content. Due to its complex composition, the charge of traditional disposal method is high and easy to bring about secondary pollution. In this paper, the influences of temperature, oxidation coefficient and residence time on the performance of supercritical water oxidation (SCWO) of paper mill sludge were investigated. The results show that SCWO can almost completely eliminate organics in sludge and obtain transparent liquid products meeting relative national standards at 550°C, 5min with an oxidation coefficient of 3.0. However, during this process, TN changes to NH3-N, so NH3-N in liquid products increases with operation parameters, indicating the recalcitrant nature of NH3-N, and which needs further treatment.
Morphology Study of Four Kinds of Syrphid
Authors: Zhang Zhuo , Liang Hui , Hu Jian Nan , Li Xin , Liu Guang Chun
Published: June 2014

This research was mainly on morphology observation of syrphid common species including Episyrphus balteatus, Eristalis latréillè, Eupeodes osten, and Melanostoma schiner. Observations of four species of syrphid morphological characteristics in Shenyang were of the first radial cell area (R1), the third radial cell area (R3), the fifth radial cell area (R5), the second median cell area (M2), the first anal cell area (1A), spurious vein and wing length. The results showed that the first radial cells area, the third radial cells area, the fifth radial cell area, the second median cells area, the first cell area and wing length of M. schiner were the minimum, and spurious vein length was the maximum. The first radial cell area of E. latréillè was larger than that in other three species. The first radial cell area of E. latréillè was larger than that in other three species. The third radial cell area, the fifth radial cell area and the second median cell area of E. balteatus were larger than that in other three species. The wing length of E. osten was longer than that in other three species. Significance test showed that syrphid wings of the same individual from the four species had no significant differences.
Genetic Diversity of Solidago canadensis Correlates Negatively with the Number of Buds and Positively with Species Number of Plant Community
Authors: Pan Jing Jing , Hu Qian Qian , Xiong Lin Yue , Wu Ying Liang , Zhu Zhi Ru , Wu Jia , Xie Xin Ci , Xu Ting Ting , Zhu Xi Wu
Published: June 2014

The genetic diversities of 5 populations of Solidago canadensis were studied using intersimple sequence repeat markers method (ISSR). Genomic DNA was extracted by a modified NaOH method from samples collected in Zejiang province, China. Meanwhile, the generative organs (buds and rhizomes) of S. canadensis and plant species number in its grown site were investigated. Our results indicated that among 5 populations, the polymorphic percentages ranged from 78.08 to 91.03. Neis gene diversity index and Shannon diversity index were more than 0.25 and 0.38 respectively. The 5 populations displayed some genetic differentiations (Gst=0.3208), showing Jiaxing population and Zhoushan population in one group, while Hangzhou population, Wenzhou population and Quzhou population in another group. We found that the number of buds varied greatly among the 5 populations, genetic diversity of S. canadensis displayed significant negative correlation with the number of buds and significant positive correlation with plant species number in its grown site. S. canadensis population has higher genetic diversity index and less buds, when grown with more other species, than with less other species. The result implied that increased competition from other species of plant community could reduce fecundity of S. canadensis.
Radical Polymerizations of Optically Active Methacrylamides Having Oxazoline Moieties
Authors: Yuan Chao , Tao Ying Bo , Li Xiao Xiao , Liu Xiao Meng
Published: June 2014

A novel type of chiral N-substituted methacrylamide derivatives bearing an oxazoline pendant (OPMAM) had been synthesized. Radical polymerization were carried out to produced corresponding polymers with high specific rotation in moderate yields. The polymerization characteristics and the chiroptical behavior of the resultant polymers have been examined in detail by using HPLC and CD and UV-vis spectra. The polymers showed relatively high molecular weights(Mn=5000-15000). The abolutely value of the specific rotation of poly(OPMAM)s basically increased with increasing the molecular weights.
Adsorption Behavior of Phenol in Aqueous Solution on MCM-41 Grafted by Different Functional Groups
Authors: Sun Xiao Jun , Yan Xiao Chun , Feng Yu Jie , Liu Xian Bin
Published: June 2014

Four types of organo-functionalized mesoporous silicas were synthesized by post-grafting method, and characterized by powder X-ray diffraction, nitrogen adsorption/desorption and fourier transform infrared spectroscopy. In addition, adsorption behaviors of the prepared material modified with different functional groups were studied by adsorption of phenol in aqueous solution. When the concentration of phenol was 800 mg/L, the equilibrium adsorption capacity of N-aminoethyl-γ-aminopropyl-MCM-41, aminopropyl-MCM-41, mercaptopropyl-MCM-41 and propyl-MCM-41 was respectively as 2.5 times, 2.2 times, 1.9 times, and 1.7 times as that of MCM-41. It was due to the introduction of organo-functional groups, changing the polarity of the channel surface, and increasing the hydrophobic properties. N-aminoethyl-γ-aminopropyl and aminopropyl groups could generate acid-base interactions with phenol, therefore, their adsorption capacity increased much more. Besides, the pH value of the solution could significantly affect the adsorption amount of phenol on samples. The result showed that with the increase of pH, the adsorption amount of phenol increased at first, and then decreased. The maximum adsorption amount of all the prepared materials occurred at about pH value of 6.
Determination and Ratio of Ferulic Acid and Gastrodin in Xiongma Decoction Extract by Different Extraction Process
Authors: Liu Lin , Liu Yue Ting , Huo Ju , Ying Zhao
Published: June 2014

Objective: The determination and ratio of ferulic acid and gastrodin in Xiongma Decoction extract by different extraction process were compared, to provide scientific research basis on creating new drugs, controlling the quality combination of modern Compound Chinese, determining the main effect and compatibility. Methods: Chuanxiong and Tianma were extracted by different extraction method such as the boiling method and ethanol extraction by different concentrations to make ​​Xiongma Decoction. The content of ferulic acid and gastrodin were determination by HPLC to make Xiongma Decoction and their ratio was calculated. Chromatographic conditions of ferulic acid: mobile phase: methanol-0.01 % acetic acid solution (30:70, V/V), the detection wavelength: 310nm; chromatographic conditions of Gastrodin: mobile phase: acetonitrile-0.05 % phosphoric acid (3:97, V/V), detection wavelength: 220nm. Results: The determination of ferulic acid was 0.976mg • ml-1, gastrodin was 1.586mg • ml-1, the ratio of ferulic acid and gastrodin was1:1.6 in boiling method; while the determination of ferulic acid was 6.08mg • ml-1, gastrodin was 3.57mg • ml-1, the ratio was 1.7:1 in ethanol extraction. Conclusion: There are different determination and ratio, when there is different extraction process in the same prescription. This may bring about changes the main effect in prescription. This suggests that the ratio of the main active ingredient should be included in the quality inspection, when preparation process of the traditional recipe was changed.
Protective Effect on Oxidative Stress Injury of Xiongma Dripping Pills Containing Serum on PC12 Cells
Authors: Liu Lin , Xia Jia Yi , Huo Ju , Ying Zhao
Published: June 2014

Object: The antioxidant dose-effect relationship and the mechanism of Xiongma Dripping Pills were study to explore the protective effects of oxidative damage in PC12 cells of different doses of Xiongma Dripping Pills containing serum. Method: Oxidative stress injury model of PC12 cells was established by peroxide hydrogen (H2O2), sodium nitroprusside (SNP), content and cell culture supernatant lactate dehydrogenase (LDH) and the liquid content of glutathione peroxidase (GSH-PX) were detected by chemical colorimetric determination. Results: There was a plasma concentration peaked in Xiongma Dripping Pills 8 times (6g•kg-1) dose group, ferulic acid plasma concentration was 10.59 ± 2.92, the plasma concentration gastrodin 18.13 ± 4.63. H2O2 and SNP could cause injury in PC12 cells, and increased LDH leakage, reduce the content of GSH-PX (P<0.01). Gung Ma the Dripping Pills can reduce LDH leakage, increase the content of GSH-PX. Xiongma Dripping Pills 8-fold dose group content is the most significant.Conclusion: There was a significant protective effect on Xiongma Dripping Pills serum containing H2O2 and SNP induced oxidative damage of PC12 cells and its mechanism was relevant with clearing the free radicals, enhanceing antioxidant enzyme activity in vivo. There was the most significant effect on Xiongma Dripping Pills 8-fold dose group, and there was positive correlation on plasma concentration and pharmacological effects.
Preliminary Study of Compositae Family Plants Classification Based on Petal Pigments
Authors: Yan Si Qi , Liu Xiao Hong , Wei Ling Zhi , Zhou Xiao Hui , Yang Liu , Lu Xiao Ping
Published: June 2014

Abatract: Choose 32 Compositae family plants which come from 14 different species (mainly based on yellow petals) were chosed, extract their pigments with anhydrous ethanol and N-butyl alcohol: Formic acid: water=4:1:2(in volume) as solution for chromatographywere extracted, and observe each petal band under 254nm ultraviolet light and write down Rf value of each band was observed. In the end, using NTSYS-pc 2.10e software to construct petal pigments phylogenetic tree with UPGMA method. The cluster analysis suggested that petal pigments of 32 Compositae family plants had certain polymorphism, and they could be classified into 4 groups at 0.70. In the 4 groups, most of the material (81.25%) belonged to group I, and the rest were classified into group II、III、IV respectively. Most of them which had a close relationship could be in one group, and those had remote relationship could be distinguished from each other.Classification of Compositae species based on petal pigments is feasible, which has an advantage of rapid, stable, low-carbon, environmental friendly when compared with mmolecular marker technology.
Preparation of LED Plant Growth Lamp and its Preliminary Study on Cultivation of Rare Chinese Herbal Medicine “Dendrobium candidum”
Authors: Li Yang , Kui Chen
Published: June 2014

In this paper, we carry on the preliminary discussion and prepare the lamp which is suitable for the plant growth, accord to light a source and its various parameters needed for plant growth, then apply it to cultivating “Dendrobium candidum” which is a rare Chinese herbal medicine. Through the experiment results, we can prove that the red/blue light wavelength is located in 660/450 nm, and the best proportion of red/blue light is 2/1, this is the best condition for the “Dendrobium candidum” to grow. In this condition, its chlorophyll a, b and the content of polysaccharide will be significantly improved.
Adsorption of Organic Pollutants by Ferric Oxide Modified Montmorillonite
Authors: Hu Xiao Long , Huang Ying Ping , Zhang Ai Qing , Zhao Xiao Rong
Published: June 2014

Ferric oxide modified montmorillonite (Fe2O3@M) was prepared with the method of microwave-assisted ion-exchange and in-situ precipitation, with Fe2O3 nanoparticles intercalated into the interlayer of montmorillonite. Rhodamine B (RhB) was employed as a probe compound to study the adsorption characteristics of organic pollutants with Fe2O3@M as the adsorbent. The effect of pH and adsorbent dosage were investigated and the results showed that the maximum of adsorption capacity for RhB was 58.8 mg g-1. The adsorption capacity of Fe2O3@M for RhB was augmented along with the increase of adsorbent dosage. The Fe2O3 modified montmorillonite exhibits a much better adsorption capacity in an acidic solution than that in an alkaline solution. The adsorption process was well fitted the Langmuir and Freundlich isotherm model, respectively, and the adsorption reaction kinetics complied with a pseudo second-order kinetics model.
Synthesis and Characterization of Canola Oil-Based Polyisocyanates
Authors: Zheng Zi Tong , Pei Fu Cai , Jiang Li Ping , Fu Chang Qing
Published: June 2014

In this study, canola oil triglycerides have been successfully transformed into canola oil-based polyisocyanates via thiol-ene click reaction and Curtius rearrangement reaction sequently. The synthesis method is non-phosgene and green. The structure of these novel diisocyanates was conﬁrmed through Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (NMR). The result shows that the goal product has been produce successfully.
A New Glycoside from Dryopteris fragrans
Authors: Fu Hai Yan , Zhang Yan Long , Li Guo Yu , Liu Guo Qing , Wang Jing
Published: June 2014

Dryopteris fragrans(L.) schott is a deciduous perennial herb in the genus Dryopteris, used to treat all kinds of skin diseases and arthritis as a folk remedy of Northeast Chinese. A new glycoside was isolated from the aerial parts of Dryopteris fragrans. The structure was elucidated as 6-O-β-D-glucopyranosyl-3-ethyl-7-hydroxyisobenzofuran-1(3H)-one.on the basis of spectroscopic methods and named fragranoside F.
Spatial Correlations among Total, Endemic, and Threatened Plant Diversity in Northwest Yunnan, China
Authors: Feng Jian Meng
Published: June 2014

Located in Southwest China, Northwest Yunnan has drawn much attention around the world because of its high plant richness. However, spatial associations among different diversity measures of seed plants in this region remain elusive. We compiled a database of spatial distribution of total, endemic, and threatened seed plants at county scale in Northwest Yunnan, and examined spatial associations among the three diversity measures and altitudinal range. We found similar spatial patterns of the three diversity measures, which were highest in the northern part of the region. Moreover, strong correlations among the three diversity measures were observed. Altitudinal range was positively correlated with total and endemic species diversity, while endemic species diversity explained more spatial variation of threatened species diversity. The spatial patterns of all three diversity measures were directly or indirectly correlated with altitudinal range, suggesting strong associations among controlling factors of the three diversity measures. Overall, our results showed strong spatial correlations among total, endemic, and threatened plant diversity in Northwest Yunnan, which should help land managers design cost-effective conservation plans in this region.
The Analysis of Dynamic Correlation between Neurons in the Primary Visual Cortex of Rats
Authors: Shi Li , Xu Kun Feng , Niu Xiao Ke
Published: June 2014

The correlation between neurons in primary visual cortex (V1 region) plays a vital role in the encoding process of visual information. By experimenting on Anesthesia Long Evens (LE) rats, a novel method called state-space log-linear model (SLM) was applied to research the curves of dynamic correlation between neurons in V1 under stimuli with different orientation gratings. The dynamic correlation curve was analyzed by extracting features and activity level of neurons measured by the response strength of identical grating (RSIG). Our investigations demonstrate that: 1) The means of dynamic correlation curve between neurons always decrease with its RSIG; 2) During the visual stimuli period, correlation between neurons shows an increasing trend; 3) If the best preferred orientations of two neurons are orthogonal, the correlation between neurons may appear decreasing trend when the pair receives stimuli from orientation with weak RSIG.
An Application of Molecular Tools in Plant Genetic Diversity Conservation
Authors: Xuan Zhou , Li Zheng Hong , Zhang Cheng , Zhang Hong Dao , Li Ji Lin , Zhang Yan Ming
Published: June 2014

The conservation and use of plant genetic diversity are essential to the continued maintenance and improvement of agricultural and forestry production and thus, to sustainable development and poverty alleviation. The dramatic advances in molecular genetics over the last decade years have provided workers involved in the conservation of plant genetic diversity with a range of new techniques. Molecular tools, such as molecular markers and other genomic applications, have been highly successful in characterizing existing genetic variation within species, which generates new genetic diversity that often extends beyond species boundaries. The objectives of this article are to review the molecular basis on plant genetic diversity conservation and summarize the continuously rising and application of molecular tool. Then, we look forward and consider the significant of application of molecular tools in plant genetic diversity conservation.
HPLC Fingerprint of the Ethyl Acetate Extracts from Zherong Radix Pseudostellariae
Authors: Wang Ting Xin , Xia Li Ya , He Xiao Qiang , Zhao Jie , Xue Xiao Pei
Published: June 2014

To protect geographical indication products,ZheRong radix pseudostellariae was collected at the 31 village of ZheRong County eight villages and towns in fujian province. A HPLC chromatographic fingerprint of the ethyl acetate extracts was developed.A suitable chromatographic system was established using a gradient elution with acetonitrile and water as the mobile phase and a detection wavelength of 203nm. Establishment of HPLC fingerprints and common pattern of 31 samples. The similarities of non- ZheRong Radix pseudostellariae were all less than 0.2, but the similarities of Radix pseudostellariae from commercially available were all more than 0.9.Then this method could efficiently distinguish non-ZheRong Radix pseudostellariae from ZheRong Radix pseudostellariae.
Electrospun Porous Ta3N5 Nanorods with Enhanced Visible Light Photocatalytic Activity
Authors: Li Shi Jie , Zhang Li Sha , Zhang Jun Lei , Zhao Hui Hui , Huang Fei , Wang Huan Li , Liu Jian She
Published: June 2014

In this study, porous Ta3N5 nanorods were sucessfully fabricated via electrospinning-calcination-nitridation method. The porous Ta3N5 nanorods are composed of Ta3N5 nanoparticles with diameters ranging from 30 nm to 80 nm. The porous Ta3N5 nanorods show significantly enhanced photocatalytic activity for the degradation of Methyl blue (MB) under visible light than commercial Ta3N5. Importantly, The porous Ta3N5 nanorods can be used as an easily recyclable photocatalyst with wide visible-light response.
The Role of Molecular Marker in Development of Plant Genetic Resources
Authors: Xuan Zhou , Zhang Hong Dao , Li Zheng Hong , Zhang Cheng , Li Ji Lin , Zhang Yan Ming
Published: June 2014

Plants are fundamental to life, being the basis of our food production and an essential part of the global ecosystem on which life on earth depends. Plant genetic resources include primitive forms of cultivated plant species and landraces, modern cultivars, breeding lines and genetic stocks, weedy types and related wild species, which provide the building blocks that, allow classical plant breeders and biotechnologists to develop new commercial varieties and other biological products. Detection and analysis of genetic variation can help us to understand the molecular basis of various biological phenomena in plants. Molecular markers for the detection and exploitation of DNA polymorphism is one of the most significant developments in the field of molecular genetics. The presence of various types of molecular markers, and differences in their principles, methodologies, and applications require careful consideration in choosing one or more of such methods. This article describes the advances of molecular marker in present, introduces the molecular basis in development of plant genetic resources and perspectives the important role of molecular marker in development of plant genetic resources in the future.
Modeling Research on 1982-2000 NDVI Time Series Data of Chinese Different Vegetation Types Based on Autoregressive Moving Average Model
Authors: Yu Rong , Cai Bo Feng , Su Xiang Qin , He Ya Zi , Yang Jing
Published: June 2014

Vegetation index time series data modeling is widely used in many research areas, such as analysis of environmental change, estimation of crop yield, and the precision of the traditional vegetation index time series data fitting model is lower. This paper conducts the modeling with introducing the autoregressive moving average time series model, and using NOAA/AVHRR normalized differential vegetation index time series data, to estimate the errors of original data which are between under the situation that the parameters to be estimated are lesser, and on the basis gives the fitted equation to the six kinds of main land covers’ vegetation index time series data of Northeast China region.
Study on the Commercial Vehicle's Ride Comfort at Idle Speed by Simulation
Authors: Hu Li , Yang Chi Jie , Yang Qi Liang , Tang Zhe
Published: June 2014

A commercial vehicle was taken as the study object to establish vehicle rigid-body dynamics model which included seventeen-degree-of-freedom. This model consisted of three rigid bodies which were power-train, frame and body and there were flex connections among the rigid bodies. The model was used to carry out simulating calculation and analysis of vehicle ride comfort. By comparing simulation results with test results, some improvement measures for vehicle ride comfort at idle speed were presented in this paper.
Research on a New Array-Manifold of Single Vector Hydrophone
Authors: Ma Bo Le , Cheng Jing Fang , Zhang Chao Ran
Published: June 2014

For the purpose of improving the signal processing of single vector hydrophone, this paper combined two velocity signals as two complex data, so as to change array-manifold of single vector hydrophone. Taking two-dimension single vector hydrophone as an example, this paper compared the capability of signal processing of new array-manifold single vector hydrophone with old one from conventional beam-forming(CBF) ,minimum variance distortionless response (MVDR) and multiple signal classification (MUSIC). As for CBF, the analysis indicates, the capability of spatial filtering of new array-manifold could improve 0.51db and the HPBW of new array-manifold will be smaller than old array-manifold. When the noise power is 0, the HPBW of new array-manifold will be narrower than old array-manifold 19.26°. As for MVDR, the capability of signal processing of new array-manifold is the same as old array-manifold. In MUSIC algorithm, the value measuring angle resolution shows the superiority of the new array-manifold- angle resolution. Simulation and measured data proved the better performance of the method presented by this paper.
Wavelet Denoising Method for RF Signal
Authors: Liang Shu Lai , Hou Zhou Guo , Li Zhao Peng
Published: June 2014

To reduce the noises in received RF signal and improve the performance of RFID system, a novelty denoising method of wavelet transform in RFID system was proposed in this paper. It analyzed wavelet transform method and FFT method,then introduced wavelet transform principle and wavelet coefficients threshold denoising method. According to the standard ISO18000-3,the RF signal at 13.56MHz was simulated using modulation toolbox in LabVIEW environment. At last, the RF signal with Gauss white noise together, was denoised by wavelet transform method and FFT method respectively. Simulation results showed that the wavelet transform denoising method has higher accuracy, better effect, compared with traditional FFT denoising method. The research on application of wavelet analysis in RF signal denoising is significant and practical. The wavelet analysis is applied to the field of virtual instrument, which can provide people with more accurate and convenient testing, and has good application prospects in engineering applications.
Synthesis and Properties of Polyacrylate Hybrid Latexes Containing Fluorine and Silicon
Authors: Yang Zhe , Ye Huan , Fu Tao Qing , Fu Chang Qing
Published: June 2014

In this paper, a series of fluoro-silicone -containing acrylate emulsion (FSiAE) have been prepared through pre-emulsified semi-continuous seed emulsion method with OP-10, sodium dodecyl sulfate (SDS) as the emulsifier, ammonium persulfate (APS) as the initiator, methyl methacrylate (MMA) and butyl acrylate (BA) as the main monomers, 2,2,3,4,4,4-hexafluorobutyl methacrylate (G02) and methacryloxy propyl trimethoxyl silane (KH-570) as the functional monomers, The effect of the content of fluoro-silicone -containing monomer on the properties of acrylate emulsion and their films, such as the contact angle, water absorption, viscosity and hardness was investigated. The results show that functional monomers had effectively copolymerized with acrylic monomers, and the introduction of fluoro-silicone into the polyacrylate emulsion system did make the viscosity of the emulsion increased, the water absorption and the surface energy of the film decreased.
Distribution and Source Apportionment of Water Environmental Risk Factors of City River
Authors: Lei Zhi Yi , Yuan Li
Published: June 2014

The landscape water body is studied in this paper. Through the monitoring of pollution sources of receiving conventional index and risk index, the distribution of pollution sources and river pollution factor is detailed analyzed, as nutrient salts, heavy metals, and environmental endocrine disruptors. And source of the pollution factor is studied by principal component analysis to get the main pollution factors in this channel.
Effect of Dynamic Change of Activities of Enzymatic in Sugarcane Field with Different Coating Material
Authors: Shi Wei Sheng , Liu Hai Ming , Peng Zheng , He Yu Shu , Zhang Fu Jie
Published: June 2014

the effect of dynamic change activities of enzymatic in Sugarcane field with different coating material was studied With three kinds of coated compound fertilizer as raw materials. Results show that the soil enzymatic activities of catalase,sucrase and urease increased first and then decreased at different sugarcane growth stage; By comparing the Coated compound fertilizer of coated materials of Idesia polycarpavar.vestita with CK, we realized the quantity of soil catalase increased 0.03mol/L、that of soil sucrase increased 0.91 mg/g、that of soil urease increased 0.05 mg/g and that of the production increased 23.7%. That was beneficial to the improvement of soil enzyme activity of coated compound fertilizer as raw materials oil of Idesia polycarpa var.vestita.
Discussion on the Biodegradation Performance of Foam Extinguishing Agent
Authors: Yang Liang , Zhuang Shuang
Published: June 2014

Organic ingredients contained in foam extinguishing agent without environmental treatment may cause serious environmental pollution, so effective evaluation and management of such components are very necessary. In this paper principle and characteristics of OECD ready biodegradation test methods are compared, the feasibility of OECD method applied to environmental performance evolution of foam extinguishing agent is researched, and Matters needing attention in test method selection and influence factors in the test process are discussed considering the component characteristics of samples.
Experiment and Research on the Mechanism of Foam Dedusting Agent
Authors: Ma You Ying , Zhou Gang , Nie Wen , Wang Hao
Published: June 2014

This paper explains how to solve the problem that the foam dedusting agent is not able to dedust efficiently according to its low foaming rate and poor wettability and finally obtains an optimal formula of foam dedusting agent. We first studied the mechanism of foam dedusting and learned that the process of foam-dedusting is comprised of interception, adhesion, wetting, and sedimentation. Then the optimal formula named Foam Dedusting Agent CNSD-1 were obtained, which is comprised of Sodium Dodecyl sulfate being foaming agent, Soluble starch being foam stabilizer, Dioctyl sodium sulfosuccinate being wetting agent, by an advanced ROSS-Miles experiment and contact angle measurement. The mass concentration of the three kind of powders respectively are 0.5%, 0.06% and 0.3%. Through the field application the conclusion can be draw that the total coal dust dedusting percentage of it is 96.35% and the respiratory coal dust dedusting percentage of it is 86.08%, the Effect is remarkable.
Spatial Distribution of Polycyclic Aromatic Hydrocarbons in Soils around the Coal Waste Rock Dumps
Authors: Zhang Li Ming , Zhou Jian Wei , Chai Bo , Gao Hai Yan , Wang Yong Hui , Li Qi Rong
Published: June 2014

We select a large coal waste rock dumps in Guangxi Heshan , study the characteristics of the distribution of polycyclic aromatic hydrocarbons (PAHs) in its surrounding soil and carry on a soil quality evaluation. Soil samples were collected in different distance and different depth from the dumps. After drying and filtrating the samples, we use the gas chromatography - mass spectrometry (GC - MS) technology for quantitative analysis of 16 kinds of priority pollutions of PAHs. The results show that in the plane, from the near to the distant, the content of PAHs in soil is from much to little. In vertical, from shallow to deep, the content of PAHs degressive changes. And the trend of change is from fast to slow in vertical and level. The plane distribution of PAHs in soil is mainly controlled by wind direction and slope, vertical distribution is controlled by its solubility in water and soil properties.Many kinds of PAHs in soils out of limit, which is poor soil.The 6 kinds of heavy ring PAHs which is carcinogenic is distributed in 5~15 cm of the topsoil.
Studies on Improving the AC Outward Transmission Capacity of Sichuan Power Grid by Utilization of Phase-Shifting Transformers
Authors: Chen Gang , Tang Fan , Teng Yu Fei , Zhang Hua , Ding Li Jie
Published: June 2014

In this paper, the feasibility analysis of the utilization of phase shifting transformers (PSTs) to improve the AC outward transmission capacity of Sichuan power grid (SCPG) is presented. Firstly, the authors analyze the working principle of PST, as well as the rules for selecting its location. Then, the AC outward transmission limit of SCPG is studied with PSASP software. Finally, the PST is used to change the power flow distribution of lines on border of SCPG. Simulations results show that the PST can significantly improve the AC outward transmission capacity of SCPG. At the same time, short-circuit current of SCPG is also reduced.
Economical and Coordinated Dispatch of CHP Based Microgrid with Renewable Energy Resources
Authors: Jin Xiao Long , Li Hai Feng , Jin Tao , Xu Xian Dong , Wang Ming Shen , Meng Jian
Published: June 2014

The advantages of high energy efficiency and economic benefit promote the wide application of combined heat and power system (CHP) based microgrid. Firstly, a mathematical model of the CHP based microgrid is developed. Then, a cost function for the coordination of heat and electric load is proposed. Finally, an optimal dispatch model is developed to achieve the economical and coordinated operation of the CHP based microgrid system. Simulation results verify effectiveness of the proposed dispatch model, which is a powerful tool for the energy management of CHP based microgrid with renewable energy resources.
State Estimation of Power System Based on Taylor Series Method
Authors: Lin Gui Hua , Wang Yu Ying , Wang Tao
Published: June 2014

Take full advantage of the PMU's accurate mass measurement data is the effective method to improve the calculation accuracy of power system state estimation. This essay puts forward the state estimation method of power system based on the Taylor series method. It analysis of power system operating conditions based on the real-time measurement of Wide area measurement system, divides the state time, establishes the equation of state of the measurement data by curve fitting method in the period of state time, creates a new state estimation calculation method by Taylor series method, constructs a new voltage characteristic curve calculation method, determines the system state and achieve the continuity of power systems steady-state analysis. The method put forward in this essay has been verified through IEEE-30 Node System, and the efficiency of it has been fully proved by the example results.
Optimal Siting and Sizing of Distributed Generation Planning in a Standalone Microgrid
Authors: Cheng Xiao Yue , Lu Jin Ling
Published: June 2014

This paper introduces renewable energy to ensure offshore platforms as a stand-alone microgrid operate reliably economically in low-carbon environment, considering volatility of CO2 emission price. A probability distribution model and economic model containing investment cost and low-carbon effect is established respectively, using latin hypercube sampling (LHS), meanwhile, the stochastic power is adopted to judge whether the built planning model can meet power flow constraint, Monte Carlo method is used to simulate characteristics of distributed generation ( DG), a probabilistic power flow is made to illustrate reliability index. The model takes the types, sites and sizes of DG as decision variables, economy and environment as the objective function, particle swarm algorithm is proposed to solve the multi-objective optimization problem .A case study based on data from offshore oilfield is presented to verify the advantages of the improved optimal sizing method.
Research of Distribution Network Reconfiguration Based on SFLGA
Authors: Zhu Kai Feng , Wang Xue , Cai Gui Hua
Published: June 2014

The article studies on the application of the shuffled frog leaping algorithm (SFLA) in power distribution network reconfiguration, taking the minimum loss and voltage quality of distribution network as a multi-objective function. The article improves the initial solution generation strategy of traditional genetic algorithm, which ensures the initial solution is feasible solution. Shuffled frog leaping algorithm and genetic algorithms are combined and proposed as shuffled frog leaping genetic algorithm (SFLGA). The algorithm uses the efficient coding strategy based on the basic loop and initial solution generation strategy, improves the calculation efficiency. The algorithm is verified by simulation results from test case on IEEE 33-bus system with distributed generations.