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Online since: June 2018
Authors: Heinz Mitlehner, Anton J. Bauer, Tobias Erlbacher, Martin Hauck, Tomasz Sledziewski, Lothar Frey, Julietta Weisse, Mattias Tschiesche, Michael Krieger
Those devices benefit from the high critical electric field of 4H-SiC (up to 2.8 MV/cm [1]), which enables a high breakdown voltage and a reduction of the static conduction losses compared to silicon devices.
The implanted dose is calculated by integration over the data measured by SIMS.
The compensating defect density Nc, the density Na and the ionization energy Eion of electrical activated acceptors were determined using a fit of the charge neutrality equation to the experimental data of p(T) (Eq. 1) [1, 3-6].
The solid lines are fits of the neutrality equation to the measured data in the temperature range from 250 K to 500 K.
The ionization energy is obtained from the slope of the data of ln(τ) in dependence on the reciprocal temperature.
The implanted dose is calculated by integration over the data measured by SIMS.
The compensating defect density Nc, the density Na and the ionization energy Eion of electrical activated acceptors were determined using a fit of the charge neutrality equation to the experimental data of p(T) (Eq. 1) [1, 3-6].
The solid lines are fits of the neutrality equation to the measured data in the temperature range from 250 K to 500 K.
The ionization energy is obtained from the slope of the data of ln(τ) in dependence on the reciprocal temperature.
Online since: January 2013
Authors: Kun Zhang, Hai Feng Wang, Sheng Pei Dai
Historical Development
The description of The earliest reports on the electronic nose: Objective needs of the industry, The development of sensor technology and oxidation - reduction reaction on the electrode analog electronic olfactory process, 1960s, Buck et al achieve a gas measurement by Using changes in the conductance of a metal and a semiconductor, Dravieks measured. the gas Based on changes in contact potential.
Causing changes in the conductivity of the sensor, then be calculated by the computer data system.
Its principle is to quickly identify a single compound or mixture of gases after practice that is made up by several parts like Sensor array, sampling and cleaning channel, adsorption desorption unit, the data acquisition system and the computer. but Its wide range of application areas is not enough, it is not get further popularize use, The main reason is that its size is too large and the prices are high.
And other tropical agricultural and sideline products quality recognition experiments, after specific experimental process, Achieve a certain probability of experimental data, get experimental results, To draw overall conclusions and programs.
Through the software of data processing, use mango, banana, papaya and other tropical agricultural products as experimental subjects to have Quality testing laboratory.
Causing changes in the conductivity of the sensor, then be calculated by the computer data system.
Its principle is to quickly identify a single compound or mixture of gases after practice that is made up by several parts like Sensor array, sampling and cleaning channel, adsorption desorption unit, the data acquisition system and the computer. but Its wide range of application areas is not enough, it is not get further popularize use, The main reason is that its size is too large and the prices are high.
And other tropical agricultural and sideline products quality recognition experiments, after specific experimental process, Achieve a certain probability of experimental data, get experimental results, To draw overall conclusions and programs.
Through the software of data processing, use mango, banana, papaya and other tropical agricultural products as experimental subjects to have Quality testing laboratory.
Online since: April 2019
Authors: Masoud Taleb, Irina Hussainova, Roman Ivanov
HRTEM data collected from the synthesized ANFC400 material depicts the core-shell type nanostructures are developed representing graphene layers wrapped around alumina nanofibers (ANFs) along a longitudinal axis.
As seen in Fig. 3b, formation of micrographs of the three-dimensional arrays of graphenated alumina nanofibers graphene flakes have been approved on the fibers in agreement to the TEM data.
Each fiber is about 20–30 nm in diameter, aligned along the fiber axis which confirms the SEM data.
Electrochemical measurements depicted multiple steps/stages for charge/discharge curves corresponding to sequential reduction for sulfur to Li2S (16∙Li + S8 ↔ 8∙Li2S) [10].
Simolka for help with acquisition of the electrochemical data.
As seen in Fig. 3b, formation of micrographs of the three-dimensional arrays of graphenated alumina nanofibers graphene flakes have been approved on the fibers in agreement to the TEM data.
Each fiber is about 20–30 nm in diameter, aligned along the fiber axis which confirms the SEM data.
Electrochemical measurements depicted multiple steps/stages for charge/discharge curves corresponding to sequential reduction for sulfur to Li2S (16∙Li + S8 ↔ 8∙Li2S) [10].
Simolka for help with acquisition of the electrochemical data.
Online since: August 2019
Authors: Maryono Maryono, Muharram Muharram, A. Irma Suryani, Iwan Dini
Recently health food supplements containing usic acid have been promoted for use in weight reduction, with little scientific support.
HMBC and HMQC Correlation of Compound 2 Based interpretation of 1H-NMR, 13C-NMR, NMR-2D, IR, data and by comparing NMR spectrum data of usnic acid [11], the compound (1) was ascertained as usnat acid derivative (molecular structure as shown in Figure 1) which is minus the hydroxyl group on the C-3 atom because there is no aliphatic hydroxyl observed at chemical shift ≥ 17 ppm.
Salina, the compound 2 be considered as moderately toxic considering to the 50% of lethality it caused at the concentration of 19.49 μg/mL, the data calculate showed in Fig. 4 and Table 1.
The Data %death of A.
HMBC and HMQC Correlation of Compound 2 Based interpretation of 1H-NMR, 13C-NMR, NMR-2D, IR, data and by comparing NMR spectrum data of usnic acid [11], the compound (1) was ascertained as usnat acid derivative (molecular structure as shown in Figure 1) which is minus the hydroxyl group on the C-3 atom because there is no aliphatic hydroxyl observed at chemical shift ≥ 17 ppm.
Salina, the compound 2 be considered as moderately toxic considering to the 50% of lethality it caused at the concentration of 19.49 μg/mL, the data calculate showed in Fig. 4 and Table 1.
The Data %death of A.
Online since: August 2021
Authors: Sergey B. Sapozhnikov, Egor V. Leshkov, Oleg A. Kudryavtsev
The analytically predicted number of cycles before failure showed a good agreement with experimental data.
This approach allows taking into account the reduction of composite stiffness due to microdamage accumulation.
The maxima envelope functions on the “displacement-time” diagrams were obtained to compare calculation data and experimental results.
L-N curves (M = 0.000289, s = 1.5) The biggest discrepancy between calculated data and experiments was observed at lower load levels.
Nevertheless, the experimental data analysis showed the necessity of taking into account additional nonlinear deformation mechanisms: machine stiffness, contact interactions, delamination, intra-, and interlaminar shear.
This approach allows taking into account the reduction of composite stiffness due to microdamage accumulation.
The maxima envelope functions on the “displacement-time” diagrams were obtained to compare calculation data and experimental results.
L-N curves (M = 0.000289, s = 1.5) The biggest discrepancy between calculated data and experiments was observed at lower load levels.
Nevertheless, the experimental data analysis showed the necessity of taking into account additional nonlinear deformation mechanisms: machine stiffness, contact interactions, delamination, intra-, and interlaminar shear.
Online since: October 2013
Authors: Qiang Guo, Shi Gang Wang, Fu Sheng Gao, Feng Lan Cheng
In this study, we simulate the three-way pipe process by finite element software, analyze the forming force influence to the tube forming quality and get the changeable regulation of the pipe wall thickness with conclusion of the wall thickness variation, which provides the reference data and guidance for the actual production of the three-way pipe.
The reduction in the top of main pipe is the most severe, which provides grounds for the designing of three-way pipe hydroforming process in actual production.
The reduction in the top of main pipe is the most severe, which provides grounds for the designing of three-way pipe hydroforming process in actual production.
Online since: January 2016
Authors: Hafizi Lukman, Amir Radzi Ab Ghani, N.V. David, Hafizan Hashim
This data therefore has great potential for further enhance the new design of energy absorbers in oblique position.
If one deformation occurs in a global bending, there will be a considerable reduction in the absorption of energy.
If one deformation occurs in a global bending, there will be a considerable reduction in the absorption of energy.
Online since: October 2012
Authors: Henrieta Pavolová, Tomáš Bakalár, Milan Búgel
The analysis of the solved problems was based on relevant data on the possibilities of using different types of renewable energy in relation to supporting the development of Olšava-Kecerovce region which also includes Čakanovce.
Efficient use of quite a significant potential of renewable energy could help reduce dependence of Slovakia from import of energy resources and to encourage further environmental (reduction of emission load) as well as socio-economic development (reducing unemployment, increasing income of municipalities in the region, etc.) of regions characterized by reporting of significant disparities.
Efficient use of quite a significant potential of renewable energy could help reduce dependence of Slovakia from import of energy resources and to encourage further environmental (reduction of emission load) as well as socio-economic development (reducing unemployment, increasing income of municipalities in the region, etc.) of regions characterized by reporting of significant disparities.
Online since: October 2025
Authors: Chinwuba Arum, Stephen Alabi, Oluwafemi Omotayo, Moses Adetutu
The reduction in slump flow may be attributed to the large volume of laterite, and inclusion of PET fibres which according to [21] have a tendency to agglomerate, consequently resulting in reduced plasticity and workability.
SCC[0,50,2], SCC[20,50,1], SCC[20,25,2], SCC[40,50,0], and SCC[40,50,2] mixes showed severe reduction in passing ability, deviating by about 10% - 30% from the minimum requirement.
The presence of FA may also may a significant contributor to strength reduction in the SCC, as supported by studies conducted by [27] and [28].
The findings from the L-box, V-funnel, and Slump flow tests suggest that although fly ash (FA) may contribute positively to the flowability of PET-fibre reinforced laterized SCC, the rheological properties can be compromised by a very high content of laterite (50%) and PET-fibres (2%), due to a reduction in workability and viscosity of the SCC mixtures.
Although, the flexural strength, tensile strength and V-funnel models showed relatively weaker predictive performance compared to others with an adjusted R2 ranging from 0.6 – 0.69, it may be improved upon further research and acquisition of data.
SCC[0,50,2], SCC[20,50,1], SCC[20,25,2], SCC[40,50,0], and SCC[40,50,2] mixes showed severe reduction in passing ability, deviating by about 10% - 30% from the minimum requirement.
The presence of FA may also may a significant contributor to strength reduction in the SCC, as supported by studies conducted by [27] and [28].
The findings from the L-box, V-funnel, and Slump flow tests suggest that although fly ash (FA) may contribute positively to the flowability of PET-fibre reinforced laterized SCC, the rheological properties can be compromised by a very high content of laterite (50%) and PET-fibres (2%), due to a reduction in workability and viscosity of the SCC mixtures.
Although, the flexural strength, tensile strength and V-funnel models showed relatively weaker predictive performance compared to others with an adjusted R2 ranging from 0.6 – 0.69, it may be improved upon further research and acquisition of data.
Online since: November 2015
Authors: Evgenia Yurievna Dolzhikova, Anastasia Aleksandrovna Filatova, T.V. Tarasova
Unlike programmed numerically controlled machine tools, they allow elements to be designed bottom-up, directly from a model created in an automated design system, without complex manufacturing planning, since in fact only data on an element’s cross section is required.
The ASTM has defined ‘Additive Manufacturing’ as a (ASTM International, 2012): "process of joining materials to make objects from 3D model data, usually layer upon layer, as opposed to subtractive manufacturing methodologies, such as traditional machining".
Basically, the technological processes of additive manufacturing consist of the creation of physical objects from geometric data without the use of traditional tools.
According to the USA Energy Department, AM can reduce energy costs in 50% and material costs in 90%; Reduction in material waste - With AM only the necessary material is used to create parts.
[9] Information on http://www.eos.info/systems_solutions/software_data-preparation
The ASTM has defined ‘Additive Manufacturing’ as a (ASTM International, 2012): "process of joining materials to make objects from 3D model data, usually layer upon layer, as opposed to subtractive manufacturing methodologies, such as traditional machining".
Basically, the technological processes of additive manufacturing consist of the creation of physical objects from geometric data without the use of traditional tools.
According to the USA Energy Department, AM can reduce energy costs in 50% and material costs in 90%; Reduction in material waste - With AM only the necessary material is used to create parts.
[9] Information on http://www.eos.info/systems_solutions/software_data-preparation