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Online since: March 2014
Authors: Michel Guillaume, Andreas Uebersax, Georges Mandanis, Cyril Huber
Introduction Up to 1958 no formal fatigue requirements exist only static strength considerations plus safety factors were expected to preclude fatigue damages.
The essential property of the new test facility is the absolute proportionality of the load distribution and the genuine sequence of loading.
The force are produced hydraulically and transmitted by mechanical means to the test specimen, which jacks which are working in tension as well as in compression.
At the end of the fatigue test an ultimate test with factor of 1.5 up to 9g was done.
Not only safety factors are defined but also initial crack sizes, probability of failures were categorized.
Online since: July 2020
Authors: Lukman Arifianto Andi Saputra, Sukarni Sukarni
Alternative energy from SW must be clearly evaluated in relation to the chemical properties.
This property is one of the main parameters for a source of fuel because this property will affect fuel behavior in the combustion chamber.
Material and Method Material and Physicochemical Properties.
Table 1 Physicochemical properties of several Synthetic Waste Unit MSW hydrothermally treated [7] MSW dried 105oC [8] Combustible MSW [2] Chemical Properties C % 45.2 5.45 7.47 H % 6.3 6.86 - O % 24.8 30.64 14.64 N % 0.9 1.36 - S % - 2.49 - Al % - - 8.91 Na % - - 0.64 Ca % - - 0.45 Physical Properties M % 11.6 2.25 VM % 70.9 57.00 65.45 FC % 6.3 12.29 28.94 Ash % 22.8 3.81 3.36 HHV MJ/kg 17.8 6.72 33.87 Thermal Analysis Method.
Wardana, Potential and properties of marine microalgae Nannochloropsis oculata as biomass fuel feedstock, Int.
Online since: February 2016
Authors: Emanuele Baravelli, Pasquale Maiorano, Antonio Gnudi, Susanna Reggiani, Giorgio Baccarani, Elena Gnani
This leads to a large gate-drain capacitance Cgd, which negatively affects the switching behavior of a TFET-based inverter, and is responsible for large overshoots of the output voltage, which further degrade the switching time.
CMOS logic is faster than TFET in both (a) self-loading and (b) constant loading, because it provides higher drive current at VDD = 0.4 V and is not significantly affected by the Miller effect.
An even greater performance loss affects the TFET inverter if a heavy capacitance load is applied.
Analysis approach The quantum-mechanical treatment for the investigation of the SL-FET is carried out self-consistently solving the open-boundary Schrödinger-Poisson equations in the effective-mass approximation with cylindrical coordinates.
Different material pairs provide different device characteristics because of the different energy filtering properties related with the material electronic structure, such as the electron mass and the barrier height between the two materials.
Online since: October 2006
Authors: R. Kalish, A. Deneuville, Jacques Chevallier, Cecile Saguy, François Jomard
It may thus affect the properties of the material.
In this work, we present the state of the art on the understanding of the diffusion properties of hydrogen and of the hydrogen-dopant interactions in diamond.
Introduction Diamond is a material which combines an exceptional set of mechanical, chemical, thermal, acoustic, optical and electronic properties.
A theoretical approach of the thermodynamic and electronic properties of boron and hydrogen related complexes has been performed by Goss et al [18].
Actually, the conversion occurs in homoepitaxial layers having appropriate structural properties [20].
Online since: January 2012
Authors: Gui Lin Zheng, Zhi Fu Zhang
In order to guarantee the magnetic latching relay shut off at current zero-crossing point accurately in long term operation, a dynamic compensation for delay time is proposed based on all-around research of the properties of magnetic latching relay actuation time.
If the mechanical contact can shut off at the point of the current zero-crossing , and in an instant the contact draw back enough distance which can make sure that it can endure the recovery voltage without breakdown, there will be no arc between the contact gaps.
Block diagram of current zero-crossing break In summary, the actuation time of magnetic latching relay is a key factor which determines whether A phase can be shut off at the point of current zero-crossing.
Such sample data must be removed, otherwise it will seriously affect the estimation of delay time Td.
Furthermore, there is still a high interest in researching new solutions based on the mentioned properties of CAN [8].
Online since: March 2025
Authors: Ahmad Fauzi Ismail, Farhana Aziz, Mohd Hafiz Dzarfan Othman, Juhana Jaafar, Fahad Mir, Azmat Ali Khan, Mustafa Kamal, Zeeshan Khan, Mukhlis Abdul Rahman
Fig. 3 SEM image of MXene/TiO2 composite photocatalyst MXene’s Structure and Properties, as a Potential Photoactive Co-catalyst Material.
The size and properties of the membrane pores play a significant role in the removal efficiency of the photocatalytic membrane.
The adsorption capacity of the photocatalytic membrane is influenced by several factors, including the type of membrane material, surface charge, and pore size distribution.
These factors collectively contribute to the improved separation of charge carriers and enhanced adsorption of dye molecules.
Falath, Nanomaterials: A review of synthesis methods, properties, recent progress, and challenges.
Online since: May 2009
Authors: Santanu K. Maiti
We show that the characteristic properties of persistent current strongly depend on total number of electrons e� , chemical potential µ, randomness and total number of channels.
This phenomenon is a purely quantum mechanical effect and gives an obvious demonstration of the Aharonov-Bohm effect [1].
As a consequence, both thermodynamic and kinetic properties oscillate with the magnetic flux φ.
Here we will describe the characteristic properties of persistent currents for some non-interacting multi-channel rings concerning the dependence of the current on total number of electrons e� , chemical potential µ, strength of disorder W and number of channels.
The characteristic properties of persistent current in the non-interacting one-channel rings and multi-channel cylinders have been presented in Section 2 showing its dependence on the total number of electrons e� , chemical potential µ, randomness and the total number of channels.
Online since: December 2008
Authors: Kang L. Wang, Igor V. Ovchinnikov
In addition, the number of transistors per chip has doubled every two years (by increasing the transistor density per unit area and increasing the chip size) and both these factors have caused an exponential rise in the leakage power of the chip.
Clearly the exact geometry of the gate electrode will change the capacitance and also affect the number.
For an atomic mass of say, 20, this factor will be about 200.
Such new materials as well as their new properties in exploiting non-equilibrium should be pursued.
We need to engage materials research to the feature size of atomic scale related to the following working principles of quantum theory: (1) Quantum mechanical tunneling (2) Many body effects and correlated electron (and other) systems as well as the interface properties (3) Control of atomic scale properties of materials in order to understand, characterize, control and eventually attain high manufacture yield.
Online since: September 2025
Authors: Patrick M. Lenahan, Reza Ghandi, David M. Shaddock, Shubhodeep Goswami, Fabrizio Sgrignuoli, Mehrnegar Aghayan, Ivan Viti, Zhi Gang Yu, Elijah Allridge
Introduction Due to its unique thermal, mechanical, and electronic properties, SiC has emerged as a crucial material in high-power electronics and devices designed for operation in harsh environments.
By utilizing NZFMR to probe the spin properties of active defects in standard SiC p-n junction devices, we have demonstrated an all-electrical SWaP relative magnetometry capable of operating at temperatures up to 500°C without isotopic purification or design enhancements.
Figure 4 demonstrates how an applied offset magnetic field affects NZFMR measurements and device sensitivity.
This reduction in sensitivity at elevated temperatures is primarily driven by two factors: the broadening of the NZFMR signal (i.e., σ) and a decrease in the current response (i.e., ΔI) to magnetic fields.
Despite these factors, the sensitivity reduction is modest (almost two orders of magnitudes), demonstrating that our SiC-based NZFMR sensor remains robust for high-temperature magnetic field detection, even though not specifically designed for magnetometry applications.
Online since: August 2021
Authors: Mohammed Abbas Al-Jumaili, Hamid Athab Al-Jameel
Both temperature and frequency of loading significantly affect the values of G* and δ for asphalt binders.
Table 2 through Table 5 summarizes the properties of six asphalt types.
Table 6 presents the SBS properties.
Physical and mechanical properties of SBS Property Value Density(Kg/m3) 1302 Melting point (oC) 187 Color While Asphalt mixtures.
Anderson, The New Proposed Rheological Properties of Asphalt Binders: Why are They Required and How Do They Compare To The Conventional Properties, Physical Properties of Asphalt Binders, ASTM, STP 1241(1995)
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