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Online since: April 2014
Authors: Yogendra N. Srivastava, John Swain, A. Widom
Among those approximations is that the initial state be coupled to a large number of final states with similar energies.
For a treatment of systems decaying into small numbers of final states and the attendant failure of the exponential "law", see, for example [5].
Interestingly, in systems like CdS, the hyperbolic delayed luminescence depends strongly on the size of the grains, and in the nematic liquid crystal 4-methoxybenzylidene-49-n-butylaniline (MBBA) it is present in the crystalline form, but disappears on melting [7].
Dividing a single device into many pixels in parallel gives a device with the high gain and gain stability of Geiger mode operation and an output which is proportional to the number of incident photons within whatever counting time is set, provided the number of photons is small compared to the number of pixels.
Dittes, "The decay of quantum systems with a small number of open channels", Phys.
Online since: May 2014
Authors: Héctor Javier Vergara-Hernández, L. Olmos, O. Jimenez, J.M.L. Salgado, J. Lemus-Ruiz, J.J. Tena-Martinez
The particle size distribution was calculated in two ways, volume and numbered.
The d50 of particles is 23 y 34 mm for number and volume fraction respectively.
However, the span value [(d90-d10)/d50] is smaller for the volume fraction 0.96 compared to the number fraction 1.4.
Then, relative density is estimated by counting the number of pixels corresponding to the solid phase and divided by the total number of the area estimated.
Guillon, Constrained sintering of BaLa4Ti4O15 thick films: Pore and grain anisotropy, J.
Online since: January 2019
Authors: Ludmila Alekseevna Savina, Valeriy V. Savin, Valerii Lykhoshva, Andrii Tymoshenko
The selected parameters allowed to implement the twisting of the flow of gas (along with the grains of powder) in a counterclockwise direction.
The size and number of pores most significantly depend on the solidification conditions of the melt (Fig. 2, e).
In general, at a fixed cooling rate of the melt, the number of pores in BCM correlates well with the quantitative characteristics of the powder-gas-laser flow used in HPLFT.
By applying different schemes of foundry technology, studied the effect of increasing the cooling rate of the melt on the size and number of pores in the bulk composite material.
Research was supported by Ministry of Education and Science of the Russian Federation, Project identification number RFMEFI57817X0252 and Project №16.4119.2017/PCh.
Online since: October 2014
Authors: Irina Bespalova, Tatyana Kunitsyna, Ludmila A. Teplyakova
This was carried out firstly using a mechanical polishing agent with small grain size and then electrolytically.
On the other hand, the shape and the number of primary macro fragments agree with the theoretical predictions for cubic specimens. 3.
Here, the single crystal "compartmentalises" into several volumes which are distinguished by their number of operating slip systems and/or the magnitude of shearing in them.
The theoretically expected and experimentally validated number of fragments formed during the loading process is in agreement for the D1k crystals.
For the D1-single crystal, the number of macro fragments, observed in these investigations, is greater than that theoretically expected.
Online since: May 2019
Authors: Vencislav Grabulov, Miodrag Arsić, Mladen Mladenović, Zoran Savić, Srđan M. Bošnjak
By repair methodology it is necessary to, due to the structural solution and service function of guide vane apparatus vanes, specify a large number of details, consider them carefully and carry them out in order to improve safety, because if some of them get overlooked, underestimated or incorrectly perceived, significant problems in turbine operation may occur.This methodology refers solely to the repair of damaged welded joints between sleeves and bodies of guide vane apparatus vanes.
[6] EN ISO 17632-1: Welding consumables, Tubular cored electrodes for gas shielded and non - fgas shielded metal arc welding of non - alloy and fine grain steels – Classification, T42 2 PC1H5, ESAB, Sweden, 2015
Online since: December 2012
Authors: Lei Wang, Li Ping He, Ai Qing Shen, Ji Zong Tan
INTRODUTION In recent years, with the increasing of Chinese economic level and per capita income levels, the number of various models was began to rapid increased.
Table 1 The basic technical indexes of rubber asphalt Test project Measured results Inspection method Penetration (25°C,100g,5s)0.1mm 41 T0604 Ductility (5cm/min,15°C)cm ≥100 T0605 SofteningpointTR&B(°C) 61.5 T0606 Kinematic viscosity 135°C(Pa•s) 3.0 T0625 In this article, the aggregate for diabase gravel produces from Guangxi, according to the grain size is divided into 10 ~ 15 mm, 5 ~ 10 mm, 3 ~ 5 mm and 0 ~ 3 mm four pots, its related technical indicators are shown in table 2.
The 170 °C crushed value test should set material in 170 °C oven in thermostat 4 hours above, then will set material by specification requirements of number loaded into crushed value test instrument, in 170 °C oven thermostat half a hours.
B.Formation ways to rubber asphalt blend factor of porosity distributed influence Put the samples which molded by Marshall compaction law, revolving compaction law and static pressure law are divided into the serial number 1, 2 and 3groups in turn, prepares 4 test samples in each group.
Carries on the even slice its test sample, the static pressure law and revolving compaction law formation test sample cut into 6 slices, and Marshall formation test sample cut into 3 slices, and defers to order from top to bottom to carry on the serial number.
Online since: December 2024
Authors: Oleksandr Nyzhnyk, Kateryna Krayushkina
Main Part Airfield and highway pavements throughout their entire life cycle are constantly exposed to a large number of negative factors that affect their technical condition and, as a consequence, ensure flight and traffic safety [5-9].
The results of monitoring the technical condition of airfield cement concrete pavements make it possible to trace the percentage of slabs with these damages to the total number of slabs (Table 1).
However, the real, actual service life between repairs of cement concrete pavements, for a number of objective and subjective reasons, is much lower than the design one (on average, 10-15 years or even less).
Nanoadditives are a powder with a bulk density of 600-900 kg/m3, each grain of which is a cluster built from nanoparticles with an average size of 300 nm.
A significant number of developments of polymer concrete mixtures relate to cold-curing compositions.
Online since: December 2010
Authors: Yan Lin Zhao, Bo Guang Luo, Yi Hu Chen, He Ying Qin
So far a number of studies have been performed by using recycled aggregate in concrete attempting to understand the properties of RAC; Among them, most of the studies are mainly focused on the mechanical properties of the resulting concrete, limited work is carried out on the understanding of the durability aspects of the emerging construction material as is probably with concrete that is made with natural aggregate [3].
Table 1 Properties of coarse aggregates Kind Grain Size(mm) Density(kg/m3) Water absorption (%) Water content (%) Crush index (%) Apparent Bulk NCA RCA S 5~20 5~20 <5 2760 2680 2600 1628 1295 1830 1.2 5.15 -- 0.5 2.49 0.47 9.12 17.32 -- Note: RCA, recycled coarse aggregate; NCA, natural coarse aggregate; S, fine aggregate Table 2 Mix design and w/b Mix w/b Unit cotent: kg/m3 Water Additional water Cement Fly ash Slag Silica fume Fine agg.
For each mix, a number of cylindrical specimens(Φ100×200 mm) were cast and cured.
(3) where is the transference number of particle (here provided is 1), is the conductance of concrete, which can be calculated using Eq. 1.
The number of total ions of Ca2+, Al3+, AlOH2+and Si4+ in fly ash, slag and silica fume concrete is more than that in pure Portland cement concrete, and the ion concentration of fly ash, slag and silica fume concrete is higher than that of control concrete [8].
Online since: November 2012
Authors: Chun Lei Ji, Shun Cheng Yan
Table 1 The notional relationship between COSMIC-FFP and UML Serial number COSMIC-FFPnotions UMLelements 1 Boundary Set of participants in use case diagram 2 Layer Set of use cases in an abstraction Layer 3 Functional process Use case (or a group massage) 4 Data group Physical storage part of class 5 Data attribute Class attribute 6 Data movement Massage of sequence diagram 7 Attention object Class Mapping rules As described in Table 1, the main concern nationsof COSMIC-FFP areboundary, layer, functional process, data group, data movement and attentionobject, etc., and all the nations are reflected in use case diagrams, class diagrams and sequence diagrams.
R18: In sequence diagram, the parameter group carried by the massage can be identified as a data group, and the number of data groups is equal to the number of different attention objects related by the massage parameter.
R21: Data movement size judgment: Data movement size is calculated on the basis of the number of related different data groups which usually is the number of different attention objects related by the data item of the data movement.
(4) For the sequence diagram that describes every functional process, to identify the number and types of the data movements contained in the functional process using rules R17~R21 and the measurement method and rules in literature[15]
Proceedings of2008 International Conference on Computer Science and Software Engineering.(2008), p. 251-254 [8] AsmaSellami, Hanene Ben-Abdallah: Functional size of use case diagrams: a fine-grain measurement.
Online since: August 2019
Authors: Ivo Dlouhý, Jakub Horník, Peter Jurči, Petra Priknerová, Zdeněk Mrštný
In the CHT specimen, the retained austenite formations are located at some of the martensitic lath interfaces as well as at the primary austenite grain boundaries, Fig. 3.
Alternatively, the number and population density of SGCs is enhanced substantially as can be seen from the comparison of Fig. 3 and Fig. 4.
However, the situation is more complex because there is considerably enhanced number and population density of small globular carbides in SZT specimens, Figs. 3 – 5.
Hence, greater number of matrix/carbide interfaces is formed in these specimens.
The higher the matrix/carbide interface number the higher is the probability to form microvoids, which is also reflected in the topography of fracture surfaces, Figs. 8, 9.
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