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Search Results: 1 - 10 of 12768 matches for " Lijun Xie "
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Analysis of Re Influence on MILD Combustion of Gas Turbine  [PDF]
Lijun Wang, Dongdong Qi, Xiaowei Sui, Xin Xie
Energy and Power Engineering (EPE) , 2013, DOI: 10.4236/epe.2013.54B018
Abstract: The paper numerical studied the MILD(Moderate or Intense Low-oxygen Dilution) combustion mode and performances in the designed gas turbine chamber. The influence of air jet Re number on flue gas recycles ratio Kv and hereby on kerosene fuel MILD combustion were modeled. For fixed equivalence ratio, increasing the air jet Re number to the Kv value of 3.3 - 3.8, MILD combustion mode will be formed. It has MILD combustion performances of volume combustion, excellent outlet temperature field and very low pollutant emissions. Combustor confinement has little effects on MILD combustion. Calculating results agree with other’s similar experimental data.
A High Capacity Information Hiding Algorithm Based on Invariance Properties of JPEG Compression
Jianquan Xie,Qing Xie,Lijun Tian
Journal of Computers , 2010, DOI: 10.4304/jcp.5.12.1925-1932
Abstract: Imperceptibility, robustness and hiding capacity are main indexes to measure information hiding algorithm. However, they always restrict each other. Invariance of JPEG compression has been analyzed at first. Then, according to invariance of JPEG compression, information hiding algorithm which can embed information in DCT median and high frequency coefficients has been proposed. Information embedding capacity adaptively determined by smooth state of subblocks, hence hiding capacity can be increased under the condition of satisfy imperceptibility. The algorithm has strong robustness against lossy compression with quality factor not exceed default, besides, experiences show that it has a certain degree of antinoise ability.
Electrochemical Characterization of Li4Ti5O12/C Anode Material Prepared by Starch-Sol-Assisted Rheological Phase Method for Li-Ion Battery
Zhenpo Wang,Guowei Xie,Lijun Gao
Journal of Nanomaterials , 2012, DOI: 10.1155/2012/876197
Abstract: Li4Ti5O12/C composite was synthesized by starch-sol-assisted rheological phase method using inexpensive raw material starch as carbon coating precursor. The Li4Ti5O12/C powder was characterized using XRD, SEM, and TG techniques. The synthesized Li4Ti5O12 crystallites are cohesively covered by conductive carbon from starch sol which leads to increased conductivity, and the particle size of Li4Ti5O12/C is about 500 nm. The electrochemical performance of Li4Ti5O12/C was characterized by galvanostatic charge/discharge and EIS methods, and the results show that the Li4Ti5O12/C presents a high discharge capacity, high rate capability, and long cycle life. The capacity retention was at 87% (500 cycles at 1C) and 73.0% (2000 cycles at 20C) indicating promising high rate performance of Li4Ti5O12/C as anode material for lithium ion battery.
A Composite Detection and Disposal Scheme for Explosive Embedded in Building
Xiang Fang,Dong Li,Lijun Xie
Modern Applied Science , 2011, DOI: 10.5539/mas.v5n3p136
Abstract: The terrorists may embed explosives in the building, and then detonate them at a certain time. In recent years, the detection of this kind of explosive has been a new subject in anti-terrorism. Aiming to prevent this form of terrorist attack, this paper discusses some current explosive detection techniques and the way they may be used in the inspection and assessment of building. The techniques that have been studied are: ground penetration radar, harmonic radar, neutral technique and abrasive water jet cutting technology. Based on the results of analysis----an overall assessment scheme is proposed. This type of scheme has been proved to fit environment of reinforced concrete and to improve detection rate as well as for reduction of false rates too.
Tracking Microorganisms in Production and Sale Operations of Spiced Geese  [PDF]
Huadong Xie, Lijun Bu, Zhengze Zhong, Yifan Zhang, Jun Lin, Zhixi Li
Food and Nutrition Sciences (FNS) , 2013, DOI: 10.4236/fns.2013.49123

Cooling, transportation and sale processes of spiced geese were studied, eight spiced geese meat samples with different sampling time, Airborne microorganism samples of three different workplaces and five different environmental contact substance samples were test, measures of special mediums, biochemical identification and DNA sequencing were carried out, then Escherichia coli, Yeast, Mildew, Lactic acid bacteria, Staphylococcus aureus and Janthinobacterium were detected. For spiced geese meat samples, microorganisms were significant (p < 0.05) increased with the prolong of sampling time. Lactic acid bacteria, Staphylococcus aureus and Janthinobacterium were detected in each processing operation and the total aerobic counts of each sample was increased or significant (p < 0.05) increased with the prolong of sampling time; Escherichia coli, Yeast and Mildew were detected on samples entered into the retail outlet mainly and the total aerobic counts of each sample was increased or significant (p < 0.05) increased also. In the household workshop, Mildew and Janthinobacterium were the superior microorganisms. In the transport vehicle, Staphylococcus aureus and Janthinobacterium were the superior microorganisms; Staphylococcus aureus was the superior microorganism in the retail outlet. For environmental contact substances, Cooling platform, pallet, chopping block were the most serious contaminated environmental contact substances and the total bacteria counts were significant (p < 0.05) more than stainless steel barrel and chopper; Janthinobacterium was the superior microorganism on pallet, stainless steel barrel and chopper; Lactic acid bacteria was the superior microorganism on chopping block and stainless steel barrel; Staphylococcus aureus was the superior microorganism on cooling platform. Findings indicate that Escherichia coli, Yeast, Mildew, Lactic acid bacteria, Staphylococcus aureus, Janthinobacterium were the main microorganisms; Household workshop and the retail outlet were the main place microorganisms contaminated; Pallet, stainless steel barrel and chopper were the main environmental contact substances.

The Research of Protein Secondary Structure Prediction System Based on KDTICM
Bingru Yang,Wei Hou,Yonghong Xie,Lijun Wang
Lecture Notes in Engineering and Computer Science , 2009,
Lijun Xie,Jian Zuo,Guoxin Yang,Congshen Zheng
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812027547
Abstract: The title compound, C51H78INO12, contains a 29-membered ring incorporating amide, lactone and ester groups. It contains a total of 15 stereogenic centres. In the crystal, molecules are linked by O—H...O hydrogen bonds, forming C(8) chains propagating in [100]. A weak intramolecular O—H...O interaction also occurs.
Lijun Xie,Xin Zhai,Jian Zuo,Yanfang Zhao
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810024566
Abstract: In the title compound, C15H23N3O4, the six-membered pyran, cyclohexane and trioxane rings adopt chair, chair and boat conformations, respectively, while the seven-membered rings adopt distorted boat and very distorted chair conformations. In the crystal, adjacent molecules are connected by weak C—H...N and C—H...O interactions.
Lijun Xie,Jie Huang,Jian Zuo,Hui Yu
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812012548
Abstract: The title compound, C51H78N4O12, is a derivative of rapamycin, a triene macrolide antibiotic molecule isolated from Streptomyces hygroscopicus. The macrocyclic ring structure has 15 chiral centres, with one of the substituent hydroxy groups giving an intramolecular hydrogen bond to a ketone O-atom acceptor. The molecules also form intermolecular hydroxy–ketone O—H...O hydrogen-bonding associations, giving one-dimensional chains extending along (010). The crystal has 108 3 solvent-accessible voids.
Harmful Gas Recognition Exploiting a CTL Sensor Array
Qihui Wang,Lijun Xie,Bo Zhu,Yao Zheng,Shihua Cao
Sensors , 2013, DOI: 10.3390/s131013509
Abstract: In this paper, a novel cataluminescence (CTL)-based sensor array consisting of nine types of catalytic materials is developed for the recognition of several harmful gases, namely carbon monoxide, acetone, chloroform and toluene. First, the experimental setup is constructed by using sensing nanomaterials, a heating plate, a pneumatic pump, a gas flow meter, a digital temperature device, a camera and a BPCL Ultra Weak Chemiluminescence Analyzer. Then, unique CTL patterns for the four types of harmful gas are obtained from the sensor array. The harmful gases are successful recognized by the PCA method. The optimal conditions are also investigated. Finally, experimental results show high sensitivity, long-term stability and good linearity of the sensor array, which combined with simplicity, make our system a promising application in this field.
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