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Online since: January 2014
Authors: Qian Mi Yu, Jian Kun Liu, Ya Hu Tian
These latter Evib and ks parameters signaled an important evolution towards the measurement of more mechanistic soil properties, e.g., soil stiffness and modulus [6].
It has instrumentation systems and the algorithms to estimate soil properties via continuous drum vibration monitoring.
With improved understanding of roller/soil interaction, it has enabled the extraction of more relevant soil properties [6].
The two softwares are mainly selected as the configuration of the best mechanical equipments of construction [14]
(2) Disadvantages [11]: ① Difficultly achieving consistency of influencing factors between calibration and construction leads to hardly reflect the effect of compaction accurately during the actual construction. ② Difficultly maintaining a constant speed can affect the result during the actual construction. ③ Requiring more complex equipment in harsh environments . ④ Training operator is required. ⑤ Its price is higher than ordinary rollers.
Online since: July 2016
Authors: Elvis K. Tiburu, Heidimarie N.A. Fleischer, Edmund O. Aidoo, Ali Salifu, Bernard O. Asimeng, Han Zhou
The arrangements of atoms in the zeolite framework can influence the structural properties of these materials and as a result could impart biological activity [9-11].
To accomplish the desired properties various variables including the source of the reactant material, temperature, aging, mode of crystallization, crystallization time as well as pH conditions must be carefully controlled.
To be accepted for biomedical applications, zeolites must provide superior biological activity and display comparable physical properties when compared to other nanomaterials.
The purpose of this study was to compare the shape, size, surface characteristics, and physical properties of zeolite A (Linde type A) synthesized and crystallized at two temperatures to investigate their biological activity towards HeLa cancer cell lines.
The current studies was intended to investigate whether LTA with Si/Al≈1 could serve as an absorbent of essential cell growth factors from culture media leading to deprivation of minerals for cell growth.
Online since: February 2013
Authors: Ryszard Zadrąg
Supporting the Empirical Research on Diesel Engines with Multi-Equation Models Ryszard Zadrąg1 1Polish Naval Academy Faculty of Mechanical and Electrical Engineering Śmidowicza St. 69, 81-103 Gdynia, Poland r.zadrag@amw.gdynia.pl Keywords: Diagnostic, theory of experiments, marine diesel engine, exhaust gas toxicity, multi-equation models Abstract.
It does not affect its performance, described by a set of output parameters.
The multi-equation model relations between input signals and output signals can be described by a system of linear equations (1) where: - explained variables (outputs), , - explanatory variables (inputs), is a factor present in the -th equation with-th being the explained variable (output), - is a factor present in the -th equation with-th being the explanatory variable (input), , - is a non-observable random component in the -th equation.
The system of equations (4) can be written in the matrix form yk+1=Ayk+Bxk+ξ (5) where: A=a11a21⋯am1a12a22⋯am2⋯⋯⋯⋯a1ma2m⋯amm, B=b11b21⋯bm1b12b22⋯bm2⋯⋯⋯⋯b1nb2n⋯bmn yk=y1[k]y2[k]⋯ym[k], xk=x1kx2[k]⋯xn[k], ξ=ξ1ξ2⋯ξm Later denoting: C∶=AB]=[cij]mx(m+n) (6) and zk∶=y[k]x[k], the system of equations (4) is shown in reduced form yk+1=Czk+ξ (7) By identifying the system of equation (4) we get to understand a problem of selecting coefficients using the values determined by real property
Online since: September 2007
Authors: Douglas E. Adams, Nathanael C. Yoder, Timothy J. Johnson
Introduction Tire durability tests are typically run at constant speeds and incorporate the three main factors that facilitate tire damage: heat, under-inflation, and over-load.
This trend is an inherent property of the geometry of the test stand and thus cannot be directly correlated to the state of the tire.
Although rolling does affect a tire's dynamics, neither the effects of rolling on the entire frequency spectrum nor the influence of these effects on tires of this specific construction are easily understood [3,7-9].
Adams: Mechanical Systems and Signal Processing, accepted for publication.
Online since: February 2014
Authors: Yong Quan Wang, Jing Yuan Wang, Hua Ling Chen
Introduction Flow cytometry is a mature technique for the quick measurement of physical and/or chemical properties of particles (usually cells) in a fluid stream, and has been used in the fields of biomedical research and clinical diagnostics for years.
The simulation results demonstrate that under the appropriate scale and motion conditions, the introduced feature steps have no substantial impact on flowing properties of the micro fluids.
Due to some inevitable human and random factors in the operating processes, the two groups of horizontal focusing images are not completely the same.
By observing and comparing these images, we can intuitively see the devices’ 3D focusing properties, as well as the influence of the step height on their performances.
[18] Wang Y, Wang J, Chen H, Zhu Z, and Wang B, Prototype of a novel micro-machined cytometer and its 3D hydrodynamic focusing properties, Microsyst.
Online since: January 2016
Authors: Randall M. German
For the case of a single phase solid undergoing sintering, the grain growth rate parameter reflects two factors - the mass transport rate across the grain boundaries and the mass transport via the vapor phase.
Dehoff, Quantitative Determination of Topological and Metric Properties during Sintering of Copper, Metall.
McIntyre, The Effect of HCl-H2 Sintering Atmospheres on the Properties of Compacted Iron Powder, Trans.
McIntyre, The Effect of HCl-H2 Sintering Atmospheres on Properties of Compacted Tungsten Powder, Trans.
Molinari, Microstructure and Mechanical Properties of CP Titanium Produced by Spark Plasma Sintering, Powder Metall., 51 (2008) 59-65
Online since: October 2023
Authors: Elisabeth Nugrahini, Endang Susilowati, Lina Mahardiani, Sulistyo Saputro, Wirawan Ciptonugroho
Making adsorbents using activated carbon has advantages, including high surface area, high mechanical strength, relatively small pore size, porous structure, and high level of elastic modulus [12].
The iron oxide with a reactive surface, a large specific surface area, and magnetic properties of the iron oxide particles allow for rapid magnetic separation after the adsorption process.
The literature study found that the pH of a solution is a crucial factor that affects the ability of an adsorbent to remove pollutants from water or wastewater.
By harnessing its potential, we can contribute to sustainable practices, waste reduction, and the development of carbon-based materials with enhanced properties.
The influence of the texture and surface properties of carbon adsorbents obtained from biomass products on the adsorption of manganese ions from aqueous solution.
Online since: September 2013
Authors: Stefano Podestà, Federica Pompejano, Gerolamo Stagno
Mechanical Properties of Materials As specified in the Italian "Guidelines for evaluation and mitigation of seismic risk to cultural heritage" [7] and on the Italian UNI standards formulated by the “Beni Culturali – Normal” Technical Committee, preliminary visual analysis and some non-destructive diagnostic tests may contribute to an adequate level of knowledge of the state of conservation of the structure and help to get an opinion on the quality of the materials and their degradation.
To each factor considered in the visual inspections, a representative score (from 0 to 1) of the conservation state of each investigated element, has been proposed in order to obtain a synthetic parameter calculated as a weighted average based on the scores assigned previously.
In case of significant discrepancy, between the grades obtained with the visual inspection summed up by the preservation index, and the results of the Resistograph test, the performance class values ​​may be penalized through a confidence factor that we assumed, in the structural analysis, close to 1.2.
However, the approach propose to operate on a limited but representative sample of the structure elements, that even if could affect, in terms of safety, the evaluations, represents the approach that usually is followed during the acquiring knowledge phase for any other existing building.
[3] Decision WHC-05/29.COM/8B,”Nominations of properties to the World Heritage List”, p. 21, UNESCO, June 2005.
Online since: February 2016
Authors: Klaus Funke
In their 1914 paper, Carl Tubandt and Erich Lorenz reported on the extraordinary properties of the alpha phase of silver iodide.
Lehmann had classified the high-temperature phase of silver iodide as the only inorganic material displaying the properties of a liquid crystal.
Apparently, many of those microstructures were still present after the β to α phase transformation, then affecting (reducing) the measured Joule losses.
VSWRmax and VSWRmin are unique functions of the absolute values of the complex transmission and reflection factors of the sample assembly, |t| and |r|, which are thus experimentally accessible.
As will be seen in the following Section, α-AgI does, however, assume more ‘solid-like’ dynamic properties, when it is stabilized below 147 °C, which is possible by confinement in glass.
Online since: August 2015
Authors: Elisabeth M. Yoshimura, Daniel Palacios, Lászlo Sajó-Bohus
LR-115 recording properties of the LR-115 track detector 2.3.
Furthermore, radon-thoron contour maps provide useful data to understand physical properties and characteristic field conditions that influence release and movement of Rn-gas isotopes.
Soil radon activities measured at surface conditions depend mainly upon factors such as: the emanating power of the rock and soil [24], the permeability of the host rock and the flow of the carrying gas [25].
LR-115 recording properties: Alpha tracks studies if based on measurements of diameters of surface and bottom track openings, provide energy window value for calibration simulation.
Once all these factors are identified and required corrections are applied, then the system is in its optimal parameters. 
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