bluuebunny/crossref_metadata_2025 huggingface dataset:
Molecular Cloning and Structure Analysis of MpARF, an ADP-Ribosylation Factor in Monascus purpureus
Authors: Gao Lan , Zhu Bi Yun
Published: January 2014

ADP-ribosylation factors (ARF) are ubiquitous regulators of vesicular membrane traffic in all eukaryotic cells. A full-length cDNA encoding an ARF was cloned from the cDNA library ofMonascus purpureus. The cDNA was 1275 bp in length, contains a predicted 555 bp ORF that encodes 184 amino acids, the gene was designated MpARF. The deduced amino acid sequence showed high homology to ARF6 ofHomo sapiens, ARFB ofAspergillus nidulansand ARF3p ofSaccharomyces cerevisiae, including conserved N-terminal myristoylation site, GTP binding and GTP hydrolysis site, suggesting that the MpARF is a member of the ARF6 protein family. A typical G protein fold three-dimensional model of MpARF was built; the structure is similar to the structure of human ARF6. According to the functions of ARFB and ARF3p in fungi, we implicated that the MpARF would involved in hyphal polarized growth.
The Purification of Industrial Alkali Lignin with Xylanase
Authors: Dai Lai Xin , Lu Hong Mei , Zhang Li Ping
Published: January 2014

The purification of industrial alkali lignin with xylanase was investigated. Then the treated lignin was analyzed by ultraviolet (UV) and Fourier transform infrared spectroscopy (FT-IR). The structure change of lignin-carbohydrate complexes (LCC) in industrial alkali lignin was also studied. The results indicate that the content and the purity of lignin increased. And LCC can be broken by xylanase. This will make the applications and development of using lignin as reactive sites and biodegradability inducing sites more advantageously.
Transesterification of Natural Lecithin Catalyzed by Isopropylamine
Authors: Li Hong Ya , Yan Biao , Zhang Xiao Li , Zhao Bin Xia
Published: January 2014

The isopropylamine with low boiling point was used for preparing GPC from natural lecithin under mild conditions, it was confirmed as an effective catalyst and the recovery can be combined with the recovery of methanol by distillation. The mechanism of the transesterification reaction was proposed and the experiments obtained the better effect under the conditions of: catalyst content was 2.4% of the total reaction volume, lecithin concentration was 0.05-0.10mol L1, reaction temperature was 60 °C and reaction time was 260 min.
Evaluation of Copper, Zinc and Chromium Contents of Some Wild Edible Mushrooms in Miyi
Authors: Zhang Ying , Jiang Shao Juan , Yang Ge
Published: January 2014

The aim of the present study was to analyze and compare contents of copper, zinc and chromium in 15 kinds of wild mushrooms. heavy metals were determined using flame atomic adsorption spectrometry (VARIAN, SpectrAA-220Fs). The mushrooms were collected from Miyi, China. The study explored the accumulation of heavy metals in different macrofung. Minimal and maximal concentrations of heavy metals were determined in Termitomyces microcarpus and Amanita esculenta for copper, Ramaria flava and Termitomyces for zinc, Hygrophorus eburnesus and Boletus aereus for chromium ,respectively. chromium values in wild mushrooms collected from Miyi were generally higher than the previous studies. Copper and zinc contents were in agreement with the literature value.
Study on Preparation of Star PLGA Cucurbitacin-Loaded Microsphere and its Propertities
Authors: Zhang Yi , Shao He Wei , Liu Yue , Han Xiao Yan
Published: January 2014

The sealed tube melt polymerization method was employed to synthesize four-arm star polymer PLGA, by which drug-loaded microspheres for cucurbitacin B were prepared. Taking drug loading amount and entrapment effiency as the indicators, drug-loading formulation was optimized.
Genetic Toxicity of Berberine on Mouse Heart
Authors: Xu Cheng Bin , Wang Lu , Hui Xiu Juan , Ma Xi Ping , Bi Xin , Zhao Quan
Published: January 2014

Berberine, a common drug, which is widely used in clinical medicine as inflammatory medicines, is rarely studied about its affection on non-target organisms in recent researches. To evaluate the eco-toxicity of berberine in mouse heart cells, biochemical responses including oxidative damage and changes in the activities of antioxidative enzymes catalase (CAT), superoxide dismutase (SOD), peroxidase (POD) and malondialdehyde (MDA) induced by berberine were investigated in mouse heart cells. 7.5, 15, 30, 60 and 120 mgkg-1 berberine was added to mouse heart cells respectively. Compared to the controls, the damage, tail DNA content (%) , tail length and tail moment went up respectively in dose-effect manner following the rising berberine; As the content of berberine increased, the activities of SOD, CAT and POD were gradually decreased and the concentration of MDA was gradually increased. Compared to the controls, the change tendency showed significant differences (p<0.05 or p<0.01). In conclusion, berberine induces oxidative stress and DNA damage to heart cells, which may be the significant mechanisms for its toxicity to mice.
Application Research on Horizontal Static Load for Elastic Long Pile
Authors: Ma Shi Yan , Yu Wei Yun , Cao Lu
Published: January 2014

Based on Winkler model and engineering example, the behavior of elastic long pile under horizontal load was analyzed in test status while pile top at solid respectively. The analysis results show that under same horizontal static load, the maximum of pile shaft bending moment in work status is higher then it in test status. The horizontal bearing capacity of pile in work status can be get based on the proportion coefficient of the horizontal resistance coefficient, m, and crack-resistant moment calculated by critical load, Hcr. While m and Hcr can be obtained by horizontal static load test.
Engineering Characteristics of Expansive Soil and its Improved Research Development
Authors: Wang Zheng Jun , Liang Jia Bin
Published: January 2014

Expansive Soil is a kind of high plastic clay. Because it has Strong hydrophilic mineral composition, its engineering prosperities embodies that its shape contracts under dehydrating, Inflation and softening under the influence of water and the strength attenuates. This is very difficult to construct in the region of expansive soil. In the region of seasonal frozen, as capillary water rising height is larger; it is prone to phenomenon of frost boil or thawing settlement. It has important meaning to improve hydrophilic and physical and mechanical properties of expansive soil for Slope stability of embankment and cutting of highway engineering and reducing the cost of investment. The paper discusses the engineering properties of expansive soil in Detail; expound some main methods of improved expansive soil at home and abroad and compare and analysis the mechanism and characteristics of the corresponding methods. The paper introduces preliminary testing methods of Expansive soil performance and prospects improved in the future.
Optic-Energy Performance of Innovative and Traditional Materials for Roof Covering in Commercial Buildings in Central Italy
Authors: Pisello Anna Laura
Published: January 2014

Innovative and traditional solutions for roof coating and urban paving are under development in order to study their effect both as passive cooling strategies for buildings and as effective tools for urban heat island mitigation. This paper deals with the optic-energy in-lab and numerical analysis of three materials used for roof covering and urban paving in Italy. Bitumen covering, cool painting and natural gravel covering are taken into account. Solar reflectance measurements shows that gravel optimize this property by more than 20% with respect to the bitumen covering of classic streets paving. The three materials are also evaluated in terms of roof covering in commercial buildings with flat roofs. Dynamic simulation results demonstrated that innovative cool membranes are able to optimize building year-round energy efficiency by 19.3%. Nevertheless, natural gravel covering produce important energy saving (15.6%) with respect to bitumen roof membrane configuration.
Soil Infiltration Characteristics under Different Land at Western Yunnan Plateau
Authors: Qi Dan Hui , Liu Zhi Qin
Published: January 2014

On the basis of soil physical properties of three different land use types at western Yunnan plateau, the soil moisture infiltration characteristics in these three land use types were studied with the advanced double-rings method. The results showed that there were differences on soil bulk density, soil porosity, initial soil water infiltration rate and stable soil water infiltration rate. The bulk density of dry land is higher than that of forest land and grass land, which results in the physical properties and structure of forest land soil are better than those of non-forest land. For the initial infiltration, its order from high to low is forest land, dry land and grass land. Among different stands, it is showed that from the average infiltration rate and steady infiltration rate, its order from high to low was forest land, grass land and dry land.
A Kind of Novel Chemical Plugging Removal Technology Study for Polymer Flooding Wells
Authors: Yuan Jing Shu , Cao Guang Sheng , Chen Ping , Gao Yang
Published: January 2014

Aiming at plugging removal issues of polymer flooding well, first of all, the mechanism of formation plugging is analyzed, and then, we discuss the reasons of bottom borehole block in polymer water flooding well and block laws. Finally, some typical indoor experiments are designed, during testing; some chemicals are tested, such as CJN-x, sodium nitrite, sodium sulfite etc. are tested. Through these experiments, these different effect of materials reducing viscosity is compared, among them, the CJN-1x and hydrogen peroxide possess better effect of plugging removal for polymer flooding wells.
The Rivalry between Old and New Material in Creating Local Environmental Features - Illustrated by the Protection and Remediation of Traditional Environmental Features in Jingmai Village, Lancang County
Authors: Su Yue , Li Tian Yu , Qi Xiao Qian
Published: January 2014

Through a practical project - the remediation of the landscape and the environment in Jingmai Village ,which analyzes the problem of the application of old and new material in the remediation and design of traditional village. Under the social background of tourism promoting economy, transform the incongruous elements in traditional villages and intend to restore the landscape and the environment of traditional Dai national folk houses, so as to achieve the dual purposes of protection and development.
Experimental Study of Volume Features of Gyratory Compaction of Asphalt Mixture
Authors: Gao Feng
Published: January 2014

In this paper, though analyzing the relation of gyratory compaction volume parameters of asphalt mixture with a variety of gradation and contrasting with the Marshall test, there comes to a conclusion that the influence sensitivity of different content of mineral aggregate needle flake to size parameters is different. So it cant determine the relationship between Marshall Compaction and gyratory compaction though volume parameters simply.
Laboratory Evaluation on Foaming Agent for High-Temperature and High-Salinity Reservoir
Authors: Fang Ji Chao , Dai Cai Li , Wang Kai , Ding Qin Fang , Wang Si Yu
Published: January 2014

In order to further enhance oil recovery (EOR) of the high temperature and high salt oil fields by foam flooding, one foaming agent was screened by airflow method. The influence of oil-water and pressure on foamability and stability were evaluated,and oil displacement experiment was also conducted. The results show that CS-1 foaming agent has better foamability and stability than the others under the reservoir conditions (Temperature 110 °C, Salinity 11.52×104 mg/L, Ca2+&Mg2+ 7654 mg/L). The foam stability will be better as the pressure rise or be worse when it met the crude oil. Oil recovery was improved by 4.13% after waterflood and the total recovery is 60.75%.
Laser-Controlled Combustion of Solid Propellant
Authors: Qin Zhao , Wu Jiang , Shen Rui Qi , Ye Ying Hua , Wu Li Zhi
Published: January 2014

This paper describes experimental work on laser-controlled combustion of solid propellants. Combustion of AP/HTPB, including ignition, combustion, extinction and re-ignition could be controlled by CO2 laser irradiation at the back pressure of 0.1, 0.3 and 0.5 MPa in nitrogen. Burning rate of propellant increased linearly with the increasing of laser power density. Vieilles law was used here to check pressure effect to burning rate, pressure exponent under different power density (except 0.5 MW/m2) are very close to 0.17.
Minimization of the Disinfection by-Product Precursors in Treated Waters Exposed to Ozone and Chlorine
Authors: Yue Shang Chao , Zhao Le Jun , Wang Xiu Duo , Wang Qi Shan , He Feng Hua
Published: January 2014

The objectives of this study were to investigate impact of preoxidation on disinfection by-product (DBP) precursors in drinking water via two different preoxidation methods. The full-scale study was conducted on surface river water in a water supply plant in Tianjin, China. Two treatment trains were performed, with prechlorination and preozonation as preoxidation methods, respectively. The water samples were collected on different stages along the treatment processes and analyzed by following organic parameters: dissolved organic carbon (DOC), UV254 and specific ultraviolet absorbance (SUVA). The results indicated that Train 2 with preozonation was more effective to reduce DBP precursors. Preozonation possessed an excellent ability in the removal of UV254 and SUVA, the removal efficiencies were 25.14% and 18.77%, respectively, comparing to the removal rates of 6.66% and 5.64% during prechlorination, separately.
Study on Wear Behavior of Plasma Arc Cladding of Tunneling Machine Pick
Authors: Zhang Ning , Shi Na , He Min , Yang Feng , Chen Hao
Published: January 2014

The working environment of tunneling machine is very harsh. In the high-impact, high-stress, and high abrasion conditions, the cutting pick is a large number of wearing parts in the tunneling process. In this experiment, the tooth head of the cutting pick which was welded by furnace brazing was strengthened by plasma arc powder surfacing with F30 alloy powder, then analyse the surface topography and component, the hardness distribution from the surfacing layer to the interior of the matrix, the friction and wear properties of the surfacing layer, study the microstructure of grinding marks, and the wear mechanism. So as to improve the wear resistance of the cutting pick, to solve the wear failure, and provide a good reference for extending the service life.
Behavior of Flow Stress of Al-Mn Alloy during Hot Compression
Authors: Zhang Xiao , Ren Zheng , Zhu Xiu Rong , Ren Jing , Lian Fu Kui , Hou Li Qun
Published: January 2014

The behavior of flow stress of Al-Mn alloy during hot compression at the condition of ε=0.05,0.5,5,25s-1 while the temperature range from 300°C to 450°C was studied by Gleblee-3500. The results show that the Al-Mn alloy possess the remarkable characteristic of a peak stress, followed by a steady-state flow stress when deformed in the temperature range from 300°C to 450°C with a strain rates range from 0.05s-1 to 0.5s-1.When the strain rate is higher than 5s-1 dynamic recrystallization will happen. The true stress decrease with increasing compression temperature and increases with the increasing strain rate. A constitution equation which can describe the relationship of ε,T and σ is achieved. Also the activation energy for deformation is calculated.
Structure Characterization of Fe-21Cr-17Mn-2Mo-Nb-0.83N Alloy Processed by Surface Mechanical Nanocrystallization
Authors: Ji Chang Tao , Huo Jing Jing , Cui Xiao Peng , Chen Zi Wei
Published: January 2014

A friction head with an embedded rolling bearing was designed, by which Fe-21Cr-17Mn-2.43Mo-Nb-0.83N high nitrogen steel was ground under rotating pressure. It was indicated that the forming process of surface nanometer grain included surface concentration plastic slip, twins deformation and fining, fragmentation and recrystallization of primary austenite grains. The plastically deformed layer is about 300μm. The surface grain is nanosize, and the grain size is about 10nm to 20nm.
Synthesizes and Properties of 1-[2-methyl-5-(4-methoxyphenyl)-3-thieny-2-[2-methyl-5-(3-methoxy-4-formyphenyl)-3-thienyl] perfluorocyclopentene
Authors: Duan Fang , Li Xue , Liu Gang , Pu Shou Zhi
Published: January 2014

A new unsymmetrical photochromic diarylethene compound, namely 1-[2-methyl-5-(4-methoxyphenyl)-3-thieny-2-[2-methyl-5-(3-methoxy-4-formyphenyl)-3-thieny perfluorocyclopentene, was synthesized and its properties were investigated in detail, including photochromic reactivity kinetics and concentration effect. The results showed that the compound exhibited remarkable photochromism, changing between colorless and blue in solution, respectively. What is more, the kinetic experiments illustrated that the cyclization/cycloreversion process of this compound was determined to be the zeroth/first reaction.
Synthesis and Properties of 1-[2,5-dimethyl-3-thienyl]-2-[2-methyl-5-(p-N,N-dimethylaminophenyl)-3-thienyl]perfluorocyclopentene
Authors: Liao Guan Ming , Sun Zhi Yuan , Pu Shou Zhi
Published: January 2014

An asymmetrical photochromic diarylethene 1-[2,5-dimethyl-3-thieny-2-[2-methyl-5-(p-N,N-dimethylaminophenyl)-3-thienyperfluorocyclopentene was synthesized and its photochemical properties were investigated in detail. The results demonstrated that the compound has excellent photochromic properties and good fluoresence. The cyclization/cycloreversion process of the compound was determined to be the zeroth/first order reaction. The fluorescence intensity increased with increasing concentration, but when the concentration increased enough high, the fluorescence intensity decreased rapidly.
The Effect of the Electro-Deposition Temperature to the Texture of Silicon Steel Sample
Authors: Li Hui , Liang Jing Long , Li Yun Gang
Published: January 2014

the conditions of the electro-deposition effect the performance of deposition sample greatly. Determining the texture of the samples of the substrate and the electro-deposition, comparing and analyzing the change rule of the texture, it is clear that after electro-deposited, the intensity of the γ fiber texture increases. And with the change of the electro-deposition temperature, the intensity of the γ fiber texture changes.
Synthesis and Properties Study of 1-(2,4-dimethoxyl-5-pyrimidinyl)-2-[2-methyl-5-(3-methylbenzene)-3-thienyl]perfluorocyclopentene
Authors: Liu Jing Jing , Jia Hong Jing , Pu Shou Zhi
Published: January 2014

A new unsymmetrical photochromic diarylethene with a pyrimidine unit has been successfully synthesized. The photochromism properties in both solution and poly-methylmethacrylate (PMMA) film were investigated in detail. Its fluorescence had a remarkable initial increase with subsequent dramatic decrease with increasing concentration. The results indicated that the pyrimidine moiety played a very important role during the process of photochromic reaction for the diarylethene derivative.
Synthesis and Photochromism of 1-(2-methyl-1-benzothiophene)-2-(2-methyl-5-aminomethane-3-thienyl)perfluorocyclopentene
Authors: Ma Le Le , Xu Hong Yan , Pu Shou Zhi
Published: January 2014

A new unsymmetrical photochromic diarylethene 1-(2-methyl-3-benzothiophene)-2-(2-methyl-5-aminomethane-3-thienyl) perfluorocyclopentene was synthesized and its optoelectronic properties, such as photochromism and the fluorescence spectra of diarylethene1oin acetonitrile solution was investigated. The compound exhibited good photochromism in solution with alternating irradiation by UV/Vis light, and the maxima absorption of its closed-ring isomer1care 530 nm. The open-ring isomer of the diarylethene1oexhibited relatively strong fluorescence at 375 nm. Its fluorescence intensity decreased along with the photochromism from open-ring isomers to closed-ring isomers upon irradiation with 297 nm UV light.
Synthesis and Photochromism Studies of 1-(2,4-dimethoxyl-5-pyrimidinyl)-2-[2-methyl-5-(3-trifluoromethylphenyl)-3-thienyl]perfluorocyclopentene
Authors: Tang Xu Gang , Jia Hong Jing , Pu Shou Zhi
Published: January 2014

The photochchromic diarylethene was synthesized and explored, which is named 1-(2,4-dimethoxyl-5-pyrimidinyl)-2-[2-methyl-5-(2-trifluoromethylphenyl)-3-thienyperfluorocyclopentene. This compound has shown good photochromic behavior. When irradiated with UV light. The compound changed from colorless to violet, which showed a relatively strong fluorescence switch along with the photochromism from open-ring isomer to closed-ring isomer.
Photochromism, Kinetics and Fluorescence of 1-(2-methyl-3-benzofuranyl)-2-[2-methyl-5-(4-cyanophenyl)-3-thienyl]perfluorocyclopentene
Authors: Xue Dan Dan , Sun Zhi Yuan , Pu Shou Zhi
Published: January 2014

An unsymmetrical photochromic diarylethene compound, 1-(2-methyl-3-benzofuranyl)-2-[2-methyl-5-(4-cyanophenyl)-3-thienyperfluorocyclopentene was synthesized, and its photochromic properties, kinetics of the photochromic cyclization/cycloreversion and fluorescence were investigated in detail. The compound exhibited good photochromism, changing from colorless to red after irradiation with 297 nm UV light, in which absorption maxima were observed at 530 nm in hexane solution. Simultaneously, cyclization/cycloreversion kinetics of this diarylethene was researched. The open-ring isomer of the diarylethene exhibited relatively strong fluorescence at 377 nm in hexane solution (2 × 10-5 mol L-1), when excited at 327 nm. The fluorescence intensity decreased along with the photochromism upon irradiation with 297 nm light. The fluorescence spectra of the diarylethene are depended on the concentration.
Synthesis and Photochromic Properties of 1-(2-methyl-1-phenyl)-2-[2-methyl-5-(4-formylphenyl)-3-thienyl]perfluoroyclopentene
Authors: Zhang Xiao Dong , Wei Sha Sha , Pu Shou Zhi
Published: January 2014

An unsymmetrical photochromic diarylethene 1-(2-methyl-1-phenyl)-2-[2-methyl-5-(4-formylphenyl)-3-thienyperfluoroyclopentene (1o) was designed and constructed successfully. Its photochromic properties were examined. The results showed that the compound exhibits good photochromism with UV/Vis light irradiation. The diarylethene 1o changed the color from colorless to blueviolet upon irradiation with 297 nm UV light, in which absorption maxima were observed at 549 and 581nm in hexane and PMMA films, respectively.The photochromic cyclization/cycloreversion kinetics of 1o in hexane were determined by UV-Vis spectra upon alternating irradiation with UV and appropriate wavelength visible light.
Windows Multidispersion Soot Interference on SO2 Concentration Measurement Accuracy Using NDIR
Authors: Zhao Yan Jun , Cheng Shou Guang
Published: January 2014

NDIR method is one of the important sulfur dioxide concentration measurement methods. The original and the transmission light intensity on the sulfur dioxide attached on the protection windows is attenuated because of the soot absorption and scattering and the received light intensity of the sulfur dioxide characteristic absorption wavelength is deviated from the theoretical absorption light intensity, so the sulfur dioxide concentration measurement result is error. The protection window soot pollution interference caused by the multidispersion soot is discussed in this paper. The numerical simulation results based on the Mie theory show that the sulfur dioxide concentration measurement result is related to the multidispersion soot average diameter, soot diameter distribution and soot dissipativity. The solution method of the windows pollution soot interference is brought out and sulfur dioxide concentration measurement accuracy can be improved.
Environment Protection with Analysis of Relations between Independent Innovation and Development of the Green Economy
Authors: Liu Ming Yue , Zhang Xiang Qian
Published: January 2014

Independent innovation and the green economy is the two power of environment protection.In this article ,by analyzing meaning of independent innovation and green economy from environmental perspective, thus demonstrating dialectical interaction between them, then preparing context diagram about their relationship. Then discussing the existing problems of the independent innovation and the green economy development, such as: insufficient incentives for the development of green economy in independent innovation, insufficient supply capacity of independent innovation in green economy, promoting greening independent innovation slowly in traditional industries. Finally putting forward suggestions from the perspective of environment protection, such as: using national independent innovation as the keynote to overall green economic development, using industrial independent innovation as the bridge to construct green economic development, green incentive System of industrial independent innovation.
Pb Contamination and Pb Isotopic Signinatures in Roadside Dusts in Hebi City, China
Authors: Huang Yong , Gao Bo , Zhang Wei , Guo Tai Jun
Published: January 2014

A detailed study was conducted to determine the current statues of Pb pollution in roadside dusts in Hebi city, China. Thirty-two dust samples were collected from major traffic streets in Hebi city, and then analyzed to determine the concentrations, distribution, and assessment of Pb in roadside dusts. The results showed that Pb exhibited higher metal concentrations (77.88 mg/kg for mean) than the local soil background values, indicating that the pollution may come from local anthropogenic input. The assessment by Geoaccumulation Index indicates that the roadside dusts in Hebi city was ranked to moderately contaminated level. The average values of Pb isotope ratios (206Pb/207Pb and208Pb/207Pb) were 1.162 and 2.421, respectively. Lead isotopic compositions in roadsides dusts indicated that coal combustion and cement material were the major sources for Pb pollution.
Characteristics of Heavy Metals Pollution in Roadside Dusts in Chang'an Street of Beijing City
Authors: Li Qiang , Gao Bo , Zhang Wei , Li Zhi Ping
Published: January 2014

A study was conducted to determine the current status of the heavy metals in roadside dusts collected from Chang'an Street in Beijing, China. Ten sampling sites were selected and analyzed to determine the concentration and pollution assessment of heavy metals in roadside dusts. The results showed that the concentrations of Cr, Cu, Zn, Cd and Pb were higher than the local soil background values, indicating that the heavy metals pollution may come from anthropogenic input. The assessment by Geoaccumulation Index (Igeo) indicated that Cr and Ni were at the unpolluted level, the other elements were at the uncontaminated to moderately contaminated level. The pollution level of the heavy metals was: Ni < Cr < Pb < Cu < Zn < Cd.
On Evaluation Model of Green Technology Innovation Capability of Pulp and Paper Enterprise Based on Support Vector Machines
Authors: Zhou Zhi Fang
Published: January 2014

Based on the analysis of the concept of green technology innovation capability, this paper not only structures the evaluation index system of green technology innovation capability in pulp and paper enterprises, builds the evaluation model of green technology innovation capability for pulp and paper enterprises based on Support Vector Machines with Radial Basis Function kernel, but also achieves the optimization of kernel function parameters, penalty factors and insensitive parameters based on a heuristic algorithm for tuning hyper-parameters. This model is more suitable for pulp and paper enterprises to evaluate green technology innovation capability, compared with the evaluation method of BP neural network.
Biological Species and Environment Study on Overwintering Protection of Raspberries and Blackberries and their Growing and Development
Authors: Huang Jun Xuan , Yang Jing Hui , Li Jian Ke , Liu Yan Jun , Li Shuang Yue , Wu Chun Xia
Published: January 2014

The winter protection of biological species is important in many kinds of fruit production in North China. Environment techniques for overwintering cultivation of summer-bearing, fall-bearing red raspberry and blackberry were studied on open field and large plastic tunnels by analysis of growth and development of raspberry under three kinds of treatment method. The result showed that the shoots death rate was 100% on open field. But, the all shoots survived in other two treatments. The survival percent of seedling was over 90% in all treatments, the survival percent of blackberry was more than red raspberrys. There was not any germination of floricane on open field. The floricanes in plastic tunnels germinated 20-25 days earlier than mounding soil treatment. The germination of primocane on open field was 17-18 days later than in mounding soil and 34-40 days later than in plastic tunnel. The length of primocan on field including mounding soil and planting on open field was shorter than plants in tunnels at the same time. No. 47 black berry grew most rapidly in plastic tunnels among all treatments. The fruit yield per cane on open field was lowest among all cultivar, next was in mounding soil. There was no difference in fruit weight between different treatments of cold protection. The weight of No.47 black berry was around 2-3 times more than other cultivars in all treatments. The yield and fruit weight of raspberry were lower than other place including them in plastic tunnels. Therefore, the raspberry plants in plastic tunnels may live through winter better in dry and cold area without artificial heating. Mounding soil also is simple and good and economic method for its cold protection.
Different Rootstocks and Physiological and Biochemical Change of SUM Cherry in Greenhouse Environment
Authors: Liang Fa Hui , Yang Jing Hui , Li Jian Ke , Liu Yan Jun , Huang Jun Xun , Xu Hui Jie , Gong Wu Que , Liu Ting
Published: January 2014

To understand the effects of different rootstocks on the growth of sweet cherry in greenhouse environment, The change of physiological and biochemical indexes of SUM variety grafted on dwarf stock (gisela 5) and the vigorous stock (mahaleb) was studied with biennial seedlings cultivated in greenhouse of north China. The results showed that dwarf stocks could increase content of Malonaldehyde (MDA), proline (PRO), activity of Superoxide dismutase (SOD) and decreased the membrane relative permeability in the leaves of SUM compared with vigorous rootstocks. So the dwarf stocks could increase the resistance of plants. The vigorous stock could decrease content of MDA, but the activity of Peroxidase (POD) was same in the leaves of SUM grafted on both of rootstocks. So, the dwarf rootstock should be better than vigorous stock on increasing resistance or drought and salt tolerance of the cherry varieties SUM.
Growth Effects of Pb stress on Seedling of Lactuca sativa L. and Brassica campestris L.ssp
Authors: Shi Yan Yu , Yang Jing Hui , Zuo Feng Yue , Li Jian Ke , Huang Jun Xuan , Liu Ting , Gong Wu Que
Published: January 2014

In order to understand the effects of lead on the growth of Lactuca sativa L. and Brassica Campestris L. ssp, the change of growth index of seedling was studied under lead stress (different concentrations of lead nitrate solution), and by soilless cultivation of seedlings in pots and in greenhouse. The results showed that two kinds of plant growth were affected by lead stress of different level, the growth speed of seedlings reduced but a great number of growth index were increased, in addition to fresh weight and dry weight of stem and leaf. The leaf number, leaf area, plant height and the fresh weight, dry weight of stem and leaf in Lactuca sativa L. were declined obviously, and the fresh weight, dry weight of roots were increased under higher levels of lead treatment at the same time. The each growth index of Brassica Campestris L.ssp was decreased in higher concentration of lead treatment. The growth of Lactuca sativa L. was slightly better and Brassica Campestris L. was slightly lower than control under 0.005 mg/L lead treatment. So, Lactuca sativa L. wasmore sensitive in low concentrations of lead than Brassica Campestris L. Both of them reduced their growth significantly, especially Brassica Campestris L.in 0.015 mg/L lead treatment. Each grow index of Lactuca sativa L.and Brassica Campestris L. changed most in all kinds of lead concentration, and the growth was inhibited most in 0.045 mg/L lead. The growth of Brassica Campestris L.was decreased more under higher concentrations of lead compared with Lactuca sativa L..
Velocity and Sludge Distribution Simulation of the Aerobic Tank of Step-Feed A/O Process
Authors: Zhao Shen , You Xue Yi , Liu Sheng Jun , Huang Yu , Shi Feng , Lu Hong Bo
Published: January 2014

The velocity and sludge distribution in the aerobic tank of step-feed A/O process were simulated by the two-phase flow model. The aeration process was simulated by the discrete phase model and the influence of the aeration on the sludge distribution was studied. The space distribution of the wastewater-sludge-bubble in the aerobic tank was determined. The results showed that the sludge age is hard to be control led as the eddies in the aerobic tank have a strong influence on the sludge retention time. The impact of the aeration on the mean sludge concentration is neglectable. The uniformity of sludge distribution along the vertical direction and the sludge sedimentation on the bottom layer are improved by the process of aeration. The results have great theoretical significance and guidance for the optimal design of the aerobic tank of step-feed A/O process.
Applied Technology in Evoked Auditory Response In Vivo Animal Cochlea by 980nm Pulsed Laser Light
Authors: Wang Jing Xuan , Tian Lan , Li Chen , Lu Dong Yu , Yang Nan
Published: January 2014

Optical cochlear implant is an emerging applied technology of stimulating auditory neurons by using pulsed laser light as a stimulus to evoke neural activity instead of electrical currents. Laser stimulation has more potential in accuracy and high frequency resolution than electrical stimulation. In this paper we demonstrated a fiber laser system (980nm) to irradiate on guinea pig cochlear in vivo for the first time. The pulsed laser stimulation successfully evoked auditory nervous impulse, similar to acoustic stimulation. And the performance under different laser pulse intensity and pulse width is further tested and discussed. The results show that the 980nm pulsed laser stimulation with microsecond level width is effective and safe to evoke auditory response. Photoacoustic or photothermal effects maybe the main mechanism. In the end, we put forward some prospects of the applied technology in cochlear implant.
Research on Task-Based Usage Control Core Models in Workflow for Manufacturing Environment
Authors: Xu Xiao Lin
Published: January 2014

With widespread application of Workflow (WF) management system, problem in access control becomes more and more important. At present, the TBAC Model and TRBAC Model cannot satisfy the requirements of access control in Modern information systems. Therefore, the task in WF is the center which combine UCON model with WF, and establish the Task-Based Usage Control (TUCON) Model in which the access control of WF use the UCON Model.
The Control Method with Energy Saving of the Inflow Turbulence for Router Cooling Fan
Authors: Xu Ying Bo , Li Xiao Dong
Published: January 2014

In this paper, the characteristics of the inflow turbulence intensity of a router cooling fan are studied experimentally. Screens with different parameters are designed to control the inflow turbulence intensity. The flow field is measured by hot-wire anemometer. The results show that the inflow turbulence intensity is closely connected with the parameters of the control screens. The inflow turbulence intensity can be significantly reduced when the screen with small meshes is used, while the mean flow is barely affected by the screen.
Nomograms for Determination of Effective Length of the Unregular Frames Based on Mechanics and Steel Structure
Authors: Zhang Da Tian , Zhou Dong Hua
Published: January 2014

Determining the frame column effective length is a key part of the structure stability calculation in practical engineering. This specification for design of steel structure and specification for design of concrete are given in some relevant calculation formula and forms, but these formulas and tables can only be applied to the simple situation. In the complex situation, such as the frame column axial force and height is large, the formula is not applicable, may leads to unsafe results. In this paper. the formulas are deduced by using second-order displacement method in order to solve these problems,and the chart for determining the effective length is also obtained. The chart can be used to calculate the effective length factor quickly and concisely.
Pseudo-Dynamic Test Analysis of Space Steel Frame with T Steel Connection
Authors: Wang Xin Wu , Hu Chang Jiao
Published: January 2014

The pseudo-dynamic test on the space steel frame with T steel connections was carried out.The dissertation focused on the analysis of the strain,the nodal displacement,the displacement response and the load feedback of the steel frame and discussed the seismic performance of steel frames with T steel connection which could supply the test basis in perfecting the design of steel structure for our country.
Alloy Design of New Ni-Based Structural Materials for Electrolytic Reduction and its Corrosion Behavior in Lithium Molten Salt
Authors: Park Sang Kyu , Lee Tae Hyuk , Sim Moon Soo , Noh Jae Soo , Cho Soo Haeng , Lee Jong Hyeon
Published: January 2014

In this study, the corrosion behavior of new Ni-based structural materials was studied for electrolytic reduction after exposure to LiCl-Li2O molten salt at 650°C for 24-216h under an oxidizing atmosphere. The new alloys with Ni, Cr, Al, Si, and Nb as the major components were melted at 1700°C under inert atmosphere. The corrosion products and fine structures of the corroded specimens were characterized by SEM, EDS, and XRD. The corrosion rate of 12wt% Cr-2wt% Si alloys and 12wt% Cr-5wt% Si alloys are below 0.3mm/year. However, the corrosion rate of 20wt% Cr-5wt% Si is 0.6mm/year. Also, the corrosion products of 12wt% Cr alloys were Cr2O3, NiCr2O4, Ni, and NiO; those of 20wt% Cr alloys were Cr2O3, LiAl2Cr3O8, and NiO. The higher corrosion rate of 20wt% Cr-5wt% Si could be the higher solute concentration which leads to an unstable alloy formation. As confirmed by the pseudo binary phase diagram of (Ni-Cr-Al-Nb)-Si, the solubility of the silicon with 20 wt% of Cr decreased to 4 wt% from 5 wt% with 12 wt% of Cr.
Lift Coefficients and Pressure Distribution Acting on Two Tandem Cylinders of Different Diameters
Authors: Wang Yong Tao , Yan Zhong Min , Wang Hui Min
Published: January 2014

Flow characteristics of two different diameters cylinders in a tandem arrangement were investigated numerically in a uniform flow. The diameter of the downstream main cylinder was kept constant, and the diameter ratio between the upstream control cylinder and the downstream one was varied from 0.1 to 1.0. The studied Reynolds number based on the diameter of the downstream main cylinder were 100 and 150. The gap between the control cylinder and the main cylinder ranged from 0.1 to 4.0 times the diameter of the main cylinder. It is concluded that the gap ratio and the diameter ratio between the two cylinders have important effects on the lift coefﬁcients and pressure distribution.
Research on Cylindrical Launcher with Cylindrical Launch Parameters Simulation
Authors: Wang Zhu Lin , Kong Fan Sheng , Li Hai Ping
Published: January 2014

Cylindrical launcher is widely used on the battlefield. Characteristic is easy handling, facilitate multigang outfit, cluster launch, emission rate and better generalization and standardization, etc. This paper mainly studies the thermal emission process of a cylindrical launch, the unsteady numerical simulation of the process, using computational fluid dynamics software GAMBIT and FLUENT, and the concept of dynamic grid and updating method of a certain type of cylindrical equipment vertical thermal emission process. Through to the launcher unsteady numerical simulation of the flow field of the guide surface pressure distribution contours, which lay a foundation for the study of the structure of this type of equipment. At the same time it is for the equipment launcher applicability related research to provide the reference.
Method of Calculating Chamber Earth Pressure of EPB Shield
Authors: Liang Bo , Cao Jing , Yang Hai Xing , Ding Zu De , Zhao Hui Ming
Published: January 2014

In order to calculate earth pressure in working chamber, three calculation modes which corresponding to status of elastic balanced, active limit equilibrium and passive limit equilibrium of the soil on the excavation face was built. The relationship of relative displacement between the soil in the chamber and the soil on the excavation face of shallow EPB shield tunnel was analyzed based on Rankines earth pressure theory. The threshold of chamber earth pressure values which correspond to the limit states of subsidence and upheaval were deduced and the reasonable range of the values were obtained. Combined with a shield tunnel construction practice, the theoretical and measured values are compared. The results show that the theoretical equations are valid and can provide a theoretical approach for the selection of chamber earth pressure.
Finite Element Analysis of Composite Overwrapped Pressure Vessel Based on the Laminated Plate Theory
Authors: Chang Xin Long , Yang Fan , Zhang You Hong , Liu Wan Lei , Long Bing
Published: January 2014

The composite overwrapped pressure vessel shell was analyzed by using the laminated plate theory. The conventional 2D laminated plate was transformed into a 3D curved plate by setting a reasonable material direction and thickness, and the finite model of the pressure vessel was built. The sress-strain field of the pressure vessel was obtained. Analysis results show that cylindrical section and head section has high stress concentration, and it is the weakest part.
Optimization of Fracturing Fluid Flowback Based on Fluid Mechanics for Multilayer Fractured Tight Reservoir
Authors: Zhang Hai Yong , Gu Dai Hong , Zhu Ming , He Shun Li , Men Cheng Quan , Luan Guo Hua , Mo Shao Yuan
Published: January 2014

The purpose of frac fluid flowback is to outflow the fracturing fluid and prevent the proppant backflow, which determines the effect of fracturing fluid flowback. The fracturing treatment in field lacks relevant theoretical models for prediction. Therefore, this work focuses on establishing the flowback model of hydraulic fracturing for multilayer fractured wells. Then the wellhead pressure and fluid flowback volume are predicted based on the actual parameters of fracturing treatment in the process of flowback and are compared with the field data of frac fluid flowback. Results show that the wellhead pressure and fluid flowback volume calculated by the model are consistent with the field data. The sand production ratio of the three wells during the flowback process is lower than 1% indicating that the optimized parameters achieve the purpose of flowback operations and reduce the flowback volume of the proppant.
Numerical Simulation and Optimization of "Non-Catalytic Reduction" Process for Circulating Fluidized Bed Boiler Based on Properties of Materials
Authors: Li Wen Yan , Kong Yan , Tan Li , Sun Zhi Xiang
Published: January 2014

The selective non-catalytic reduction (SNCR) process of a 480th-1 CFB boiler was simulated with the Reynolds Stress Model (RSM) model. The effects of injection position, normalized stoichiometric ratio (NSR) and reaction temperature on the NOx removal process were studied with urea and ammonia as reducing agents. While three spray guns were set at the outside of the separator entrance and two spray guns at the up side, the system can reach the highest NOx removal efficiency. The NOx reduction efficiency of ammonia is about 20%-25% higher than that of urea, but the ammonia slip is also higher. The NOx reduction efficiency and ammonia slip both increases with the increase of NSR. Raising the inlet gas temperature of cyclone separator can significantly improve the NOx removal efficiency and reduce ammonia slip. At the temperature of 925 C, the ammonia slip of the two reducing agents are both less than 10μl/l. Simulation results are comparatively consistent with the experiment datas cited form authoritative journals.
A Study of the Fire Resistance against Structural Materials of H-Section Made of SS 400 by Boundary Conditions at High Temperature
Authors: Kwon In Kyu
Published: January 2014

Fire resistance of H-section by types of boundary condition such as hinge to hinge, hinge to fixed, and fixed to fixed at high temperature can be different. However, the study of evaluation is very limited. In this study, to estimate the fire resistance of H-section made of ordinary structural steel, SS 400, a fire engineering method was used with applying materials properties at high temperature and a heat analysis, a stress analysis. The results showed that hinge to hinge boundary condition was the lowest at an allowable stress at high temperature. Therefore, the application of the hinge to hinge is more conservative boundary condition in H-section connection in high temperature.
Research on Information Applied Technology with Data Analysis of Flowers Auction Data Based on Cointegration and Granger Casualty
Authors: Zhang Guang Hui , Zhang Xiao He , Huang Guo Yong
Published: January 2014

According to the research of the variables (supply quantity, volume of trade, failed auction rate and price) using the information applied technology with data, from Kunming flowers auction market, with cointegration and Granger casualty, the result shows that the price has an impact on supply quantity and volume of trade with one lagged period, the supply quantity and volume of trade affect the price with three lagged periods. At the same time, the price affects the failed auction rate with three lagged periods. The failed auction rate affects the price in the same way. With the analysis of above, the supply quantity and volume of trade may exit multicollinearity. It is proved by vector autoregression (VAR) model. The results will be a guide to the flowers auction.
Information Technology in an Improved Moving Target Detection Algorithm
Authors: Zhang Chun Fei , Fang Zhi Yi , Qu Hai Qin
Published: January 2014

Moving target detection is an important research direction in the field of computer vision which is using digital signal processing techniques to extract moving targets from the video image. And the accuracy is directly related to the identification and tracking of the target. Based on the analysis and research of traditional moving target detection algorithm, this paper introduced an improved moving target detection algorithm combined the background subtraction method and mixed-frame difference method, aim to improve the empty and ghosting phenomenon and achieve the rapid detection of moving targets. Experimental results show the effectives and efficiency of the algorithm.
Applied Technology in Assembly Line Balancing Based on Genetic Algorithm and Simulation
Authors: Liu Jun Song
Published: January 2014

For the assembly line balancing problem, the purpose of adopting genetic algorithm is to balance the average operation time of each work-station. In this paper, we elaborate the main factors that affect the genetic algorithm. Then evaluation functions are brought in the study to evaluate the simulation model based on eM-Plant. Finally the feasibility of this applied technology is verified by the example.