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Online since: May 2012
Authors: Wei Neng Wen, Hong Ming Lou, Xin Ping Ouyang, Xue Qing Qiu, Yu Xia Pang
The fluidities when the products used as water reducer were taken as the evaluation index of the product properties.
The dispersive properties of modified products are shown in Fig.2, where the dosage of lignin (wt.%) equals the percentage of m (L)/ m (P+L).
It is possibly because long-time phenolization partly breaks the polymer structure of lignin due to phenolysis, which decreases the molecular weight of product and then affects the dispersive property.
Dispersive property to cement paste The naphthalene dispersant formaldehyde condensate (FDN) is a sophisticated and widely-used superplasticizer, and the concrete blended with FDN usually has high water-reducing ratio and high mechanical strength.
Effect of MSPF on the bleeding rate of mortar Although SPF has excellent dispersive and slump-maintaining properties, it also has severe defect that concrete blended with SPF exhibits serious water bleeding and segregation, and as a result the mechanical strength and long-term durability of concrete will drop dramatically.
Online since: February 2012
Authors: Jin Li, Xiang Yang Qin, Chen Ma, Jun Jun Wang, Chun Jiang Zhao
Therefore, cultivating vegetables need to both understand the origin of many factors of environment characteristics and the environmental requirements, master the various factors related to the regulation of the various environmental conditions, mutual coordination, in order to ensure the normal growth and development of vegetables need.
Rapid and High-throughput Detection of Harmful Factors.
From nineteen eighties, abroad countries began to research on rapid food safety according to produce optical, acoustic, mechanical, electromagnetic and thermal physical properties.
The current detection technology and equipment are mostly based on traditional physical and chemical principle, the field manual collection and laboratory manual testing, to achieve rapid real-time automatic acquisition detection equipments are less, the detection time is long, detection result is affected by the human factors.
The developed countries have started to build NIRS Network Center, users can sent sample spectra and properties to the network center without complex modeling work, then it can use near infrared technology to realize remote real-time detection and data sharing.
Online since: August 2018
Authors: Pavel Liška, Barbora Nečasová, Michal Novotný
General material properties of Cetris Basic Material Properties Mean Value Tensile strength perpendicular to board plane 0.6 N/mm2 Shear strength 2.0 N/mm2 Another material subjected to the testing was Siberian larch façade cladding.
General material properties of façade planks from Siberian larch (Larix sibirica) [13] Material Properties Mean Value Tensile strength perpendicular to the grain 1.5 N/mm2 Tensile strength parallel to the grain 12.0 N/mm2 Shear strength 10.0 – 12.0 N/mm2 Table 3.
General material properties of WPC – poplar [15] Material Properties Mean Value Tensile strength perpendicular to board plane N/A Tensile strength after bending 15.0 – 17.0 N/mm2 Shear strength 2.0 N/mm2 Table 5.
General material properties of WPC – beech [16] Material Properties Mean Value Tensile strength perpendicular to board plane 9.0 N/mm2 Tensile strength after bending 15.0 – 17.0 N/mm2 Shear strength 2.0 N/mm2 Methods.
Böhm, Evaluating the influence of moisture content on the mechanical and physical properties of OSB, Dissertation thesis, 2008
Online since: August 2004
Authors: Young Hwan Choi, Young Jin Kim, Jae Boong Choi, Jong Choon Kim, Youn Won Park, Shinobu Yoshimura
The safety of a nuclear power plant, however, has seriously been considered as a threatening factor to the environment due to the detrimental damage in case of accidents.
Newly developed network based softwares have replaced traditional PC-based sofrwares, and it highly affected the way of business.
Fujita and Kinugawa[9] developed Data-Free-Way, an internet-based information system for material properties used for a nuclear power plant by applying distributed database system.
Huh et al.[10] developed an internet-based database for creep properties, and studied on the direct application of its database to the life evaluation system or expert analysis system.
The developed system covers in-service inspection data, material properties, and component geometry and stress data for an RPV which are usually required for the process of defect assessment.
Online since: February 2018
Authors: Xue Lei Tian, Xue Tao Wang, Hong Liang Zheng, Di Meng
Many researchers have studied the strain behavior and the workability of spheroidal graphite cast iron in order to improve its mechanical properties [2-4].
The formation of graphite morphology [5-7] are important since they affect the metal-carbon composite properties.
When the graphite morphology changes from flake to sphere, the mechanical properties of cast iron increase greatly [8].
But three kinds composition of Ni-Si and different contents of Si have a little influence on the diameter of graphite nodules, which shows the influence of the addition of Si element on the growth of the graphite nodules does not depend on that Si increases carbon equivalent, but it depends on the other unknown factors.
Karsay, Spheroidal graphite iron II engineering design properties application, Quebec iron and titanium corporation, Canada, 1971
Online since: March 2013
Authors: Mohamed Zahidi Musa, Mohamad Rusop Mahmood, Ismail Lyly Nyl, Mohd Hanapiah Abdullah
Effect of PEG on the TiO2 electrode morphology for scattering enhanced properties of the modified paste containing TiO2 sol-gel mixed with Degussa P-25 were investigated.
Among them, the relatively simple sol–gel method is the most widely used because of its low cost and its ability to obtain films with tailored properties on large, curved substrates.
Many attempts were made to study how porosity could affect efficiency [6], Similarly, Shen et al. [7] reported that the electron transport properties and efficiency could be enhanced by using smaller TiO2 particle size with large pore sizes.
In addition to that, the excellent in scattering properties ascribed from appropriate percentage of PEG addition to the sample also contribute to better IPCE of the DSSC.
Azrol from Mechanical Engineering Department, (UiTM) Malaysia for the XRD measurement.
Online since: February 2011
Authors: Shi Jin Zhang, Yu Qiang Wu, Yan Li Wang
For many applications, cutting speed is the most important factor which affects its application.
As is well-known, time consumed during cutting process is a very important factor which affects manufacturing cost and cutting efficiency.
For most users, cutting time is a very important factor to consider when selecting machining method.
Except cutting time, another important factor to consider, for many users, is manufacturing cost.
For some applications, those changes, such as recast layer and HAZ, can be ignored since they don’t affect the mechanical properties of the material too much, however, in some applications, those changes are unacceptable since they may lead to early failure of parts.
Online since: October 2007
Authors: Yoshihiro Hosoya, Toshiaki Urabe, Hiromi Yoshida, Kaneharu Okuda, Hidetaka Kawabe, Yasushi Tanaka
In addition to cold-rolling reduction, grain refinement of hot-bands is one of the most important factors for obtaining high r-value [6,7,8].
It can be inferred that the rolling texture is strongly affected not only by the grain boundary constraints but also by the distribution of precipitates in the hot-bands.
factor in the rolling condition [14], where the preferential order of orientation in α-fiber is {111}<110>, {112}<110>, and {001}<110>.
(c) Mechanical behavior of annealed specimens The microstructures of Steels A and B annealed at 840°C are shown in Fig. 6.
Figure 7 shows the mechanical properties of the annealed specimens.
Online since: November 2012
Authors: Zong Hua Wang, Yu Feng Wang, Yan Zhi Xia, Fei Fei Zhang, Jian Fei Xia
The modified electrodes, exhibiting both of unique properties of CNT and chitosan, has excellent electrocatalytic effect of I-.
Introduction Since the discovery of carbon nanotubes (CNT) in 1991 [1], their unique structural, mechanical, electronic, and thermal properties have stimulated multi- and interdisciplinary research activities in various fields.
The role of CNT was: (i) to transfer electrons between the electrode surface and I- based on the intrinsic property of CNT; (ii) to increase the conductive area based on the high specific surface of CNT; (iii) for chitosan doping into the modified layer since chitosan cannot be directly modified at bare graphite electrode due to its solubility.
As the charging current contribution to the background current is a limiting factor in the analytical determination, experiments were carried out using the DPV anodic stripping voltammetric technique.
Because of the porous structure, I- could easily penetrate into the interfacial layer that would affect the subsequent measurements.
Online since: February 2003
Authors: J. Baruchel, Wolfgang Ludwig, Daniel Bellet, E. Pereiro-López
On the other hand, the contact with a liquid metal may also entail severe degradation of the mechanical strength of the material.
First of all, it is not very well defined from an experimental point of view and depends upon numerous factors either related to the material itself (chemical composition, stress, grain size etc.), or to the experimental method used (in-situ versus ex-situ).
The key factors of synchrotron radiation for micro-radiography are the very low divergence of the beam, the very high photon flux and the tuneable energy.
The Al bicrystals exhibit regular properties along the grain boundary while for polycrystals, the grain boundaries are twisted and have complicated shapes.
You should use specimen design according to fracture mechanics, in order to control not only the stress σ, but also the κ value (stress intensity factor) E.
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