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Online since: March 2015
Authors: Magdalena Popczyk, Bożena Łosiewicz, A. Budniok, Iwona Napłoszek
The experimental data obtained by cyclic voltammetry, steady-state polarization curves and electrochemical impedance spectroscopy showed a pronounced improvement in HER kinetics when these composite electrode materials were used in comparison to the rate of HER determined for nickel electrodes.
The electrodeposited Ni-PTFE coatings, which have hydrophobic properties, showed high current efficiency in the reactions of oxidation or the reduction of water-soluble organic compounds.
The application of these coatings as electrode materials contributed to a significant reduction in the reaction overpotential of alcohol oxidation and aldehydes reduction.
A reduction in the overpotential of hydrogen as well as oxygen evolution when compared to pure nickel on these coatings was also observed [43].
Based on the literature data it was ascertained that the composite coatings based on the crystalline or amorphous nickel matrix, which apart from the d-electron metal powder contain another composite component (i.e. the p-electron metal powder), are promising electrode materials.
Online since: February 2012
Authors: Jie Wu, Yi He Sun
Specifically, our sensing system is designed to achieve the following goals: • Personalized, real-time sensing of comprehensive hybrid vehicle and user driving data; • Power-efficient monitoring and sensing data quality assurance; • Transparent sensing for ease of deployment and minimum driver obstruction.
The data gathered include speed, battery system and fuel use data
Specifically, three different monitoring modes are supported: (1) unsolicited OBD mode for battery system related data (e.g., current, voltage, SOC); (2) solicited OBD mode for fuel combustion engine data (e.g., air intake); and (3) mobile sensing mode for collecting GPS, speed, and acceleration data from the mobile device.
Driving analysis has drawn significant attention in the past Previous studies have used GPS devices, accelerometer, and deployed on-board data acquisition system to capture user driving data [9].
Using global positioning system travel data to assess real-world energy use of plug-in hybrid electric vehicles.
Online since: May 2014
Authors: Wen Lai Liu
This paper regards the interface as a basic analysis unit which can record reliable data of the automation software preparing for automation software chain concurrent reliable predictions.
The operation station provides different services for the different customers based on relative data; the engineer station can update the parameters, such as time, log and amounts of hardware, according to the requirements.
Table 1 The reliability of sub-service S2 Time(h) Reliability m=1 m=2 m=3 100 0.9856 0.9877 0.9878 500 0.9727 0.9834 0.9835 1000 0.9567 0.9782 0.9781 1500 0.9256 0.9673 0.9673 2000 0.9054 0.9566 0.9567 2500 0.8663 0.9461 0.9462 3000 0.8382 0.9358 0.9358 Table 1 describes the reliability data of the software sub-service.
From the figure 2, the amounts of the alternatives will gradually increase with the increase of the concurrent data structures and the reliability of the sub-servicewill increase accordingly.
The detailed data is shown in table 2.
Online since: March 2017
Authors: Zdeněk Prošek, Jaroslav Topič, Josef Fladr
Based on the previous data the strength properties of the cement paste with recycled concrete powder below 33 wt. % was almost constant and strength properties were comparable with a reference sample made of cement only.
Replacement below critical amount could lead to cost reduction of cement composites and also the negative impact of the cement production and concrete disposal on environmental could be reduced.
Based on the previous data the strength properties of the cement paste with recycled concrete powder below 33 wt. % was almost constant and strength properties were comparable with reference sample made of cement only.
Online since: July 2015
Authors: Temim Zribi, Hedi Belhadj Salah, Ali Khalfallah
It improves part consolidation, weight reduction and enhanced surface finished [1].
These latter variables are determined by an iterative calculation using geometric relationships and a set of experimental data.
(8) where X represents the material parameters, N is the number of data points.
Experimental data In this study a set of four tubular materials are considered.
It can be seen that the thickness at the pole predicted by inverse approach is in good agreement with experimental data.
Online since: November 2005
Authors: Yoshinobu Motohashi, Satoshi Hanawa, Masahiro Ishihara
However, these fracture theories treat only macroscopic strength with probabilistic parameters determined from experimental data.
In this paper, the expanded model is described, and applicability is discussed by comparing experimental data.
Predicted results and experimental data [9] of biaxial strength under tension-tension condition are compared in Fig. 4.
We can see from this figure that the predicted biaxial strength shows a good agreement with experimental data.
We can see from this figure that the prediction has a good agreement with experimental data.
Online since: January 2005
Authors: Kwang Hwa Chung, J.H. Kim, G.W. Moon, Dae Jin Seong, Sung Woo Choi, Yong Hyeon Shin, Seung Soo Hong, In Tae Lim
However, there is no one method that is able to obtain all outgassing data [6-8].
Fig. 4 shows the sample data measured using the throughput method.
The data obtained by the system for screening materials for satellite are shown in Table 1.
[6] American Vacuum Society Standards AVS 9.1 Reporting of Outgassing Data
[7] American Vacuum Society Standards AVS 9.2 Reporting of Thermal Degassing Data
Online since: April 2014
Authors: Peter Groche, Matthias Brenneis, Mesut Ibis, Alexander Duschka
In addition to their mechanical properties they are also able to sense, to actuate or to transmit energy or data.
Rotary swaging tools, with a cavity in the region where later on the functional material will be inserted, provide a local cross section reduction.
Diameter reduction is performed within 0.6 s, followed by 0.5 s lasting calibration process.
In case of Model III it is depicted that throughout the time when diameter reduction takes place the contact area envelops ring’s radius.
Through further infeed motion and subsequent strokes the final diameter reduction is reached, while the ring component is deformed mainly elastically.
Online since: April 2014
Authors: Y. Al-Douri, Ahmed M. Mohammed, Ismail Al-Khateeb, Adawiya J. Haider
The equilibrium adsorption data were analyzed using adsorption models of Langmuir, Freundlich and Temkin.
The results showed that the model isotherms are fitting very well with the experimental data.
Kinetic study was conducted and the results pointed out that a pseudo-first order model was represented the data.
Adsorption kinetics The adsorption data of benzene by CNT was fitted through kinetic model including pseudo-first order kinetic [12] as shown in following equation
About 100% reduction in concentration of benzene was obtained.
Online since: May 2014
Authors: Zhang Bo
This article studies the correlation between concrete proportioning and cement dosage in coarse aggregate through practices, discovers the importance of reasonable selection of coarse aggregate in economic cement mixing ratio configuration process, and realizes the implementation of project cost reduction in project design.
Based on the related laboratory data, different gap rate of crushed stone grain shape is got.
According to the experimental data of coarse aggregate proportion design accumulated in the years, it can be got that there is close relationship between concrete coarse aggregate strength, the dosage of cement, and the particle size in three levels: high strength, middle strength, and low level strength.
Table 2 19 to 37.5 mm graded gravel’s related technical indicators Specifications 19 to 37.5mm sieve aperture gauge sieve points accumulated triage Void fraction % 45 15mm 15.3% 92.5% 8.8mm 3.7% 95.3% Apparent density g/cm3 2.53 32.8mm 4.7% 4.7% 29.4mm 17.3% 18.6% Needle and flake particle content % 5.1 4.39mm 2.2% 98.5% 2.58mm 0.5% 97.4% Apparent density g/cm3 1.27 24.7mm 31% 52.5% 17mm 29.4% 80.6% Table 3 4.75 to 19 mm graded gravel related technical indicators Specifications 4.75~ 19mm sieve aperture gauge sieve points accumulated triage Void fraction % 45 4.68mm 32.9% 97.5% 2.58mm 3.5% 100.3% Apparent density g/cm3 2.49 27.4mm 2.8% 2.8% 20mm 2.7% 5.8% Apparent density g/cm3 1.36 15mm 7.1% 13.8% 8.8mm 42% 56.2% Table 4 Two gravels 4.75 to 19 mm and 19 to 37.5 mm reference configuration related experimental data and technical index 4.75to19mm 19to37.5mm needle flake particle content 3.69% apparent density total weight of gravel Mass percentage weight quality percentage 2262g 35% 462g
By using constructive concrete strength method, adjust mixture ratio design; Three is to effectively strengthen scientific management and strictly control aggregate weighing error and moisture content of raw materials, the corresponding operating personnel must also adjust mixture ratio in accordance with the measured data by manual or computer; Four is to strictly control concrete mixing time through the strengthening of construction control, with the aid of these advanced methods such as forced machine with the use of advanced equipment, and at the same time, also strictly control the mixture slump data so as to provide effective guarantee for the implement of corresponding mixture ratio design and concrete quality.
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