ALBERT — All Library Books, journals and Electronic Records Telegrafenberg

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Characterization of the Mechanisms Controlling the Permeability Changes of Fractured Cements Flowed Through by CO2-Rich Brine (2013)

H. Abdoulghafour, L. Luquot and P. Gouze

American Chemical Society (ACS)

In: Environmental Science & Technology

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Publication Date: 2013-09-07

Description: Environmental Science & Technology DOI: 10.1021/es401317c

Print ISSN: 0013-936X

Electronic ISSN: 1520-5851

Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering

Published by American Chemical Society (ACS)

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Effects of Magnetite Nanoparticles on Soybean Chlorophyll (2013)

Mohammad H. Ghafariyan, Mohammad J. Malakouti, Mohammad R. Dadpour, Pieter Stroeve and Morteza Mahmoudi

American Chemical Society (ACS)

In: Environmental Science & Technology

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Publication Date: 2013-09-08

Description: Environmental Science & Technology DOI: 10.1021/es402249b

Print ISSN: 0013-936X

Electronic ISSN: 1520-5851

Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering

Published by American Chemical Society (ACS)

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Distributed Fault-Tolerant Event Region Detection of Wireless Sensor Networks (2013)

Dyi-Rong Duh, Ssu-Pei Li, and Victor W. Cheng

Hindawi

In: International Journal of Distributed Sensor Networks

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Publication Date: 2013-09-10

Description: This work provides a distributed fault-tolerant event region detection algorithm for wireless sensor networks. The proposed algorithm can identify faulty and fault-free sensors and ignore the abnormal readings to avoid false alarm. Moreover, every event region can also be detected and identified. Simulation results show that fault detection accuracy (FDA) is greater than 92%, false alarm rate (FAR) is near 0%, and event detection accuracy (EDA) is greater than 99% under uniform distribution. FDA is greater than 92%, FAR is less than 1.2%, and EDA is greater than 88% under random distribution when sensor fault probability is less than 0.3.

Print ISSN: 1550-1329

Electronic ISSN: 1550-1477

Topics: Electrical Engineering, Measurement and Control Technology

Published by Hindawi

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Identification of Protein Pupylation Sites Using Bi-Profile Bayes Feature Extraction and Ensemble Learning (2013)

Xiaowei Zhao, Jian Zhang, Qiao Ning, Pingping Sun, Zhiqiang Ma, and Minghao Yin

Hindawi

In: Mathematical Problems in Engineering

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Publication Date: 2013-09-10

Description: Pupylation, one of the most important posttranslational modifications of proteins, typically takes place when prokaryotic ubiquitin-like protein (Pup) is attached to specific lysine residues on a target protein. Identification of pupylation substrates and their corresponding sites will facilitate the understanding of the molecular mechanism of pupylation. Comparing with the labor-intensive and time-consuming experiment approaches, computational prediction of pupylation sites is much desirable for their convenience and fast speed. In this study, a new bioinformatics tool named EnsemblePup was developed that used an ensemble of support vector machine classifiers to predict pupylation sites. The highlight of EnsemblePup was to utilize the Bi-profile Bayes feature extraction as the encoding scheme. The performance of EnsemblePup was measured with a sensitivity of 79.49%, a specificity of 82.35%, an accuracy of 85.43%, and a Matthews correlation coefficient of 0.617 using the 5-fold cross validation on the training dataset. When compared with other existing methods on a benchmark dataset, the EnsemblePup provided better predictive performance, with a sensitivity of 80.00%, a specificity of 83.33%, an accuracy of 82.00%, and a Matthews correlation coefficient of 0.629. The experimental results suggested that EnsemblePup presented here might be useful to identify and annotate potential pupylation sites in proteins of interest. A web server for predicting pupylation sites was developed.

Print ISSN: 1024-123X

Electronic ISSN: 1563-5147

Topics: Mathematics , Technology

Published by Hindawi

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Numerical Analysis of Copper-Indium-Gallium-Diselenide-Based Solar Cells by SCAPS-1D (2013)

S. Ouédraogo, F. Zougmoré, and J. M. Ndjaka

Hindawi

In: International Journal of Photoenergy

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Publication Date: 2013-09-11

Description: We used a one-dimensional simulation program Solar Cell Capacitance Simulator in 1 Dimension (SCAPS-1D) to investigate Copper-Indium-Gallium-Diselenide- (CIGS-) based solar cells properties. Starting with a conventional ZnO-B/i-ZnO/CdS/CIGS structure, we simulated the parameters of current-voltage characteristics and showed how the absorber layer thickness, hole density, and band gap influence the short-circuit current density (), open-circuit voltage (), fill factor (FF), and efficiency of solar cell. Our simulation results showed that all electrical parameters are greatly affected by the absorber thickness (w) below 1000 nm, due to the increase of back-contact recombination and very poor absorption. Increasing hole density (p) or absorber band gap () improves and leads to high efficiency, which equals value of 16.1% when p = 1016 cm−3 and eV. In order to reduce back-contact recombination, the effect of a very thin layer with high band gap inserted near the back contact and acting as electrons reflector, the so-called back-electron reflector (EBR), has been investigated. The performances of the solar cells are significantly improved, when ultrathin absorbers (w 〈 500 nm) are used; the corresponding gain of due to the EBR is 3 mA/cm2. Our results are in good agreement with those reported in the literature from experiments.

Print ISSN: 1110-662X

Electronic ISSN: 1687-529X

Topics: Electrical Engineering, Measurement and Control Technology , Energy, Environment Protection, Nuclear Power Engineering

Published by Hindawi

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A Comparison of the Characteristics of Planar and Axisymmetric Bluff-Body Combustors Operated under Stratified Inlet Mixture Conditions (2013)

G. Paterakis, K. Souflas, E. Dogkas, and P. Koutmos

Hindawi

In: Journal of Combustion

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Publication Date: 2013-09-11

Description: The work presents comparisons of the flame stabilization characteristics of axisymmetric disk and 2D slender bluff-body burner configurations, operating with inlet mixture stratification, under ultralean conditions. A double cavity propane air premixer formed along three concentric disks, supplied with a radial equivalence ratio gradient the afterbody disk recirculation, where the first flame configuration is stabilized. Planar fuel injection along the center plane of the leading face of a slender square cylinder against the approach cross-flow results in a stratified flame configuration stabilized alongside the wake formation region in the second setup. Measurements of velocities, temperatures, and chemiluminescence, local extinction criteria, and large-eddy simulations are employed to examine a range of ultralean and close to extinction flame conditions. The variations of the reacting front disposition within these diverse reacting wake topologies, the effect of the successive suppression of heat release on the near flame region characteristics, and the reemergence of large-scale vortical activity on approach to lean blowoff (LBO) are investigated. The cross-correlation of the performance of these two popular flame holders that are at the opposite ends of current applications might offer helpful insights into more effective control measures for expanding the operational margin of a wider range of stabilization configurations.

Print ISSN: 2090-1968

Electronic ISSN: 2090-1976

Topics: Energy, Environment Protection, Nuclear Power Engineering

Published by Hindawi

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