Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: July 2021
Authors: Cheng Yu Ye, Zhao Ye Wang
Superconductors are the materials with physical properties where electrical resistance vanishes and magnetic flux fields are expelled from the materials.[3-6] In the context of a normal conductor, the current flow is considered to be the flow of electrons moving across a heavy ionic lattice.
The superconducting properties of the first unconventional superconductor, CeCu2Si2, were reported in 1979 by Steglich.[9] Then, in 1987 Bednorz and Müller discovered that the cuprate perovskite material LaBaCuO4 develops superconductivity at a critical temperature of approximately 35K, which is far above the highest critical temperature known at that time.
The superconductors lose their superconductivity once one of the three factors goes beyond the critical value.
The magnet design must also consider several other aspects such as superconducting wire performance, operational reliability, magnet protection, sufficient mechanical strength, low-temperature technology and cooling methods.
The cryogenic system is necessary to ensure that the superconducting magnet is at low temperature, but its cooling effect directly affects the technical performance of the superconducting magnet, such as thermal stability.
Online since: October 2011
Authors: Jian Bo Zhou, Jing Yong Liu, Zuo Yi Yang, Yu Tian, Xu Nan Ning, Lei Li
Single-factor experiment Lime experiment.
b) The compressive strength of the solidified blocks increased when the content of lime and cinder increased, which showed that the addition of lime and cinder was beneficial to improve the mechanical properties of solidified blocks.
Online since: August 2021
Authors: Mustafa Mazin Ghazi, Ahmad Jabbar Hussain Alshimmeri
The benefit of Standardized tests was to find the properties of materials according to (ASTM) and (IQS).
Sand's properties (Physical & Chemical).
Concrete Tests and Results The following concrete properties were investigated in this study: the strengths of compressive, the splitting tensile, and Modulus of Rupture.
Hashim, ‘The impact of grinding time on properties of cement mortar incorporated high volume waste paper sludge ash’, Karbala Int J Mod Sci, vol. 6, no. 4, 2020
Ibrahim, ‘Properties of eco-friendly cement mortar contained recycled materials from different sources’, J Build Eng, vol. 31, p. 101444, 2020, doi: https://doi.org/10.1016/j.jobe.2020.101444
Online since: September 2017
Authors: Alexander V. Evteev, Elena V. Levchenko, Graeme E. Murch, Rafał Leszek Abdank-Kozubski, Irina V. Belova, William Yi Wang, Tanvir Ahmed, Zi Kui Liu
Introduction The development of commercial superalloys based on the Ni-Al system has attracted a great deal of attention due to their excellent high-temperature physical and mechanical properties [1-5].
Meanwhile, a detailed quantitative summary of similar properties for the model of Ni50Al50 melt with the same potential can be found in Ref. 16.
Thermodynamic and kinetic properties predicted by the EAM-2009 potential for the Ni25Al75 melt.
Thermodynamic and kinetic properties predicted by the EAM-2009 potential for the Ni75Al25 melt.
[4] Proceedings of the International Symposium on Nickel and Iron Aluminides: Processing, Properties, and Applications, edited by S.C.
Online since: March 2019
Authors: Rahul Mitra
Efforts have been also made to develop multicomponent Nb-silicide based alloys with optimum combination of mechanical properties and high temperature oxidation resistance with limited success.
Summary The oxidation behavior of Mo, Nb and Ti silicide based alloys and composites is controlled by thermodynamic stability of oxidation products as well as kinetic factors affecting growth.
Raj, An evaluation of the properties of Cr3Si alloyed with Mo, Mater.
Rama Rao, Microstructure, mechanical properties and oxidation behavior of a multiphase (Mo,Cr)(Si,Al)2 intermetallic alloy–SiC composite processed by reaction hot pressing, Mater.
Rama Rao, Microstructure, mechanical properties and oxidation behavior of a multiphase (Mo,Cr)(Si,Al)2 intermetallic alloy–SiC composite processed by reaction hot pressing, Mater.
Online since: May 2019
Authors: Zynovii Malanchuk, Pavlo Saik, Mykhailo Petlovanyi, Kateryna Sai, Vasyl Lozynskyi
A statistical model for the description of the properties of clathrate compounds of hydroquinone was created by Van der Waals.
Approximate values of these properties can be obtained by computational methods.
So, the processes of phase changes in the solid phases are difficult at high loads by the action of factors resulting from these loads.
One of the main factors of the thermodynamic study of phase transformations involving the voids formation is the fact that the energy of their relaxation is always positive and can be determined by a calorimetric method.
The influence of fine particles of binding materials on the strength properties of hardening backfill.
Online since: September 2011
Authors: Feng Hua Zhao, Jun Yang
Zhou etc. [3] investigated the mechanical properties of laminated rubber isolator, drafted the laminated rubber isolation technical regulations.
(2) Seismic Isolation Property.
(3) Restoration Property.
(4) Damping Energy-dissipation Property.
Life Cycle Cost Undeniably, economic index is an important factor that affects the developers’ and proprietors’ decision-making.
Online since: March 2024
Authors: Zoe Mellick, Alice Payne
It is essential to understand the different types of cotton as they affect the fibre’s staple length, quality, price, and market destination.
The price of cotton is determined by a volatile global marketplace, influenced by factors such as market forces and government subsidies.
However, social factors such as the impact on farmers and their income security are not taken into account in LCAs.
Chain of custody models have been developed to promote transparency and trust in the movement of materials and their properties, such as origin and production practices.
Mechanical recycling involves shredding fabrics, but the resulting fibre is often weaker and needs to be blended with virgin cotton to create new products.
Online since: March 2025
Authors: Huyen Lynh Duong, Quoc Nguyen Banh, Anh Son Tran, Van Keo Dong, Xuan Hiep Tran
Determination of Geometrical Parameters to Balance the Pressure Drop of Channels on a Microfluidic Chip Keo Van Dong1,2,3,a, Hiep Xuan Tran1,2,b, Quoc-Nguyen Banh1,2,c, Son Anh Tran1,2,d , and Lynh Huyen Duong1,2,e* 1Department of Manufacturing Engineering, Faculty of Mechanical Engineering, Ho Chi Minh City University of Technology (HCMUT), 268 Ly Thuong Kiet Street, District 10, Ho Chi Minh City, Vietnam 2Vietnam National University Ho Chi Minh City, Linh Trung Ward, Thu Duc City, Ho Chi Minh City, Vietnam 3College of Engineering, Can Tho University, Can Tho City, Vietnam advkeo.sdh231@hcmut.edu.vn, btxhiep.sdh21@hcmut.edu.vn, cbqnguyen@hcmut.edu.vn, dtason@hcmut.edu.vn, edhlynh@hcmut.edu.vn *Corresponding author email: dhlynh@hcmut.edu.vn Keywords: Microfluidic Chip, Droplet-based Microfluidic Chip, Branching channels, Pressure drop Abstract.
Q1Q2=A2A1 (18) Based on Eq. 13, Eq. 16, Eq. 17, and Eq. 18, we can calculate the length L2 for two different channel profiles by using Eq. 19 and Eq. 20 below, where, ΔP is the pressure drop along the channel segment, k is the Consistency Index, which is related to the properties of the fluid and the channel (the k value obtained from Table 1), n is the Flow Behavior Index (the n value obtained from Table 1), Q is the flow rate of the fluid (0.2 mL/min), H and W are the dimensions of the microchannel as described in Fig. 2 and Fig. 3 above For rectangular microfluidic channels: L=ΔP.H2κ12Q2n+1H2Wnn (19) For trapezoid microfluidic channels L=ΔP.H2κ14Q2n+1H2W1+W2nn (20) As a result, the value of L2 for the trapezoidal channel cross-section is 52 mm, whereas for the rectangular channel cross-section, it is 56 mm.
Further studies could explore how variations in the flow rate, fluid properties, and channel design impact the overall performance of microfluidic devices.
Conclusions In microfluidics, pressure drop plays a critical role in controlling the flow of fluids through narrow channels, where factors such as fluid viscosity, channel geometry, and flow rate significantly influence the system's performance.
Specifically, the bend sections are expected to incur higher pressure losses compared to the straight segments, which can affect overall system performance.
Online since: May 2025
Authors: Kateřina Mrkvova, Petr Štěpánek, František Girgle, David Vašátko
The beams were reinforced in various configurations and, among other factors, the effect of the reinforcement ratio on the degree of redistribution of bending moments was examined.
Given the limited scope of this article, the authors are focused solely on a particular aspect of the problem, and do not address the variability in material properties, geometry, etc.
Table 1.Material properties used in the calculation FRP tensile strength [MPa] 649 modulus of elasticity [GPa] 67,1 tensile rupture strain [‰] 9,67 concrete compressive strength [MPa] 39 modulus of elasticity [GPa] 38 Moment-Curvature Relationship To describe the behavior of a concrete cross-section reinforced with FRP reinforcement, we can use the relationship between the bending moment and the curvature of the cross-section.
This relationship helps to understand and visualize how the cross-section behaves under different levels of applied load and what is the mechanical response of the reinforced sections when loaded.
It is important to analyze how different reinforcement areas affect moment-curvature relationships and the overall stiffness of the section.
Showing 26041 to 26050 of 26166 items