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Online since: September 2013
Authors: Jiang Hong Guo, De Li Chen
Inner-cluster division It is obvious that the number of reporters increased with the increase of the number of regions, so we adopt as few regions as possible.
Upon receiving such messages, the cluster head can learn the number of nodes located in each region and which type these sensors are.
Where the count means the number of certain type of nodes located in the region, for example, CA,S1 means the number of nodes of type A located in S1.
We denote Nt-CTDA(sim) as the number of transmissions in simulation and Nt-CTDA(tho) as theore- tical value.
Srivastava, “Dynamic fine-grained localization in ad-hoc networks of sensors”, in Proc.
Online since: September 2024
Authors: Enkhtor Sukhbaatar, Erdene-Ochir Ganbold, Rentsenmyadag Dashzeveg, Munkhtsetseg Sambuu, Narkhajid Ganbold, Baasanjargal Saruultuya, Bilguun-Od Norov, Munkhjin Ganbold, Altankhuu Bayarsaikhan, Rene Tschaggelar
It is calculated the spin numbers in biochar sample, that is compared to brown coal related data.
An Elexes Bruker X-Band spectrometer at ETH Zurich with a rectangular cavity was used operating at a frequency of 9.8 GHz, with a 100 KHz modulation frequency, 0.1 mT modulation amplitude, excitation power of 2 mW, attenuator of 20 dB, receiver gain of 24 dB, number of scan of 1, filter integration as well as was kept similar for all samples.
Dugarjav et al. [7] who have produced a similar production namely, a Nalaikh coal briquettes conjugated wood grain in ratio of coal:wood grain given 85:15, %.
The most minerals vibrations in biochar existing in long wave region are as similar numbers as in brown coal.
The reference was 10 mMolar Tempol in Toluene means 9.42 × 1017 spin in reference sample by Avogadro number.
Online since: December 2010
Authors: Mathias König, Ingvar L. Svensson, Magnus Wessen
A total number of 19 chemical compositions were studied, including three trials of varying nodularity treatment level; four trials of varying copper content; four trials of varying silicon content; four trials of varying tin content and four trials of varying carbide promoter content.
During this stage the chill grows rapidly perpendicular to the mould wall and due to the brittleness of the cementite fragments keeps breaking of the main direction of the growth causing the ledeburite grain to spread out in a fanlike manner according to Hillert and Subba Rao [2].
During a second stage, the ledeburite grows as a rod eutectic along the c-direction of the cementite consuming the remaining melt located between ledeburite grains.
Online since: April 2015
Authors: N.P. Shapkin, V.I. Razov, I.G. Khalʻchenko, V.I. Mayorov, A.L. Shkuratov, V.O. Trukhin, V.V. Kotochentsev
The modification of vermiculite was carried out as described below: 100g of heated to a constant weight vermiculite with the temperature of 120-150 °С, grain size equaled to 0.05-0.10 mm had been stirred in 200 ml of 12% hydrochloric acid solution for two days.
Obtained vermiculite obtained (sample number #3, table. 1) was dried to constant weight and analyzed for the content of major elements.
Moreover, the largest number of acid sites was obtained by the 12% hydrochloric acid and the same way by 10% sulfuric acid [7].
It is connected with the maximum extraction of magnesium ions from the interlayer space (Table 1, Fig. 4b), thus, the number of freed volumes is growing (Fig. 4a) and for the reason that the volume sizes are defined by the ratio of the total volume to the number of annihilation sites, the value of the specific volume, where the annihilation occurs, decreases.
After the acid treatment, the pore sizes reached of 6-14 nm and their number was increasing dramatically.
Online since: May 2011
Authors: Zeng Chao Feng, Jiang Fang Wang, Dong Zhao
And the results showed that the number of joint surface is a fundamental parameter of rock mass strength nonhomogeneity.
For limited scale network (L×L), the number of pores in maximum cluster is
Threshold permeability characteristics of nonhomogeneous rock Size of porous connection is dependent on two factors, one is porosity of homogeneous porous medium, the other is coordination number of units, which is number of neighbor units in each unit.
For the above model of threshold, the coordination number of two dimension square network is 4 and hexahedron is 6.
From Fig.4 minerals in rock no matter number or form, the distribution of density is random and rock porous numbers in arbitrary part are different.
Online since: December 2010
Authors: Mao Fu Liu, Xiong Hua Guo, Chang Rong Zhao
(4) Where α is the number of sets for training test data, Rm is measured surface roughness in the tests, and ym is the predicted surface roughness.
The inputs are population size M, crossover rate pc, mutation rate pm, and number of generations.
A suitable orthogonal array Lγ(2γ - 1) is selected for the matrix experiments, where γ is the number of experimental runs and γ-1 is the number of columns in the orthogonal array
(10) Repeat Steps (6) to (9) until the expected number M × pc has been met
In the prediction model, the number of the fuzzy rules n was 25, the total number of premise and consequent parameters was 118 (i.e. β = 118), the population size M was 200, the crossover rate pc was 0.9, the mutation rate pm was 0.1, the number of generations was 200, the orthogonal array was L120(2119), the performance index J was 0.0054 and the Gaussian function was used as the membership function.
Online since: January 2012
Authors: Ji Cheng He, Sano Masamichi, Ting An Zhang, Yan Liu, Qiang Wang
The bubble dispersion and disintegration is the key of the technology of molten iron desulfurization by single blow grain magnesium, and the mass transfer coefficients is the basal parameter of gas absorption process.
Effect of Different Nozzle Number and Diameter on CO2 Absorption Rate .
Fig.8 shows the relation between transfer coefficient and nozzle number when pH declines from 12 to 8 in which immersion depth of the nozzle at the end of the impeller is h = 24cm , under the conditions that of 3.0mm nozzle diameter and 2.0mm diameter.
Clear from the figures ,when nozzle number is 2,compared with 3,6,8,transfer coefficient reaches maximum ,means the best reaction in the bath when nozzle number is 2 .And compared with nozzle diameter 3.0mm ,2.0mm is better to transfer coefficient under the condition of the same nozzle number ,that means decease the diameter of nozzle can improve the bubble disintegration and dispersion and favorable to the reaction in the model. 1:the nozzle diameter is 3.0mm 2:the nozzle diameter is 2.0mm Fig.8 The relation between transfer coefficient and nozzle number Fig.9 Relation between volumetric transfer coefficient and the nozzle number(PH value change from 12 to 7, the diameter of nozzle is 3.0mm) Fig.9 shows the relation between transfer coefficient and nozzle number when pH declines from 12 to 7 in which immersion depth of the nozzle at the end of the impeller is h = 24cm, under the conditions that of 3.0mm nozzle diameter.
We can draw a same conclusion from the curve of relation between volumetric transfer coefficient and the nozzle number when the diameter is 2.0mm.
Online since: August 2011
Authors: Alex Fang, Jason Sowers
The abrasives used for all lapping experiments were synthetic monocrystalline diamonds of 140/170 mesh size which constitute a distribution of grains sizes from 75 to 125 μm with an average of 100 μm.
This set of experiments involved changing the PDC layout as shown in Figure 5 and number of PDC samples run on a specimen holder.
Test numbers D3-D5 do not show data for inner and outer ring PDCs because of their 1 ring design.
Test number D7, which lapped 42 samples, resulted in an extremely high MRR variation.
That is, the vehicle diamond concentration and vehicle delivery rate were adjusted proportionally with the number of PDC samples.
Online since: October 2010
Authors: Benedetto Bozzini, Ivonne Sgura, Deborah Lacitignola, Claudio Mele, Mariapia Marchitto, Antonio Ciliberto
As the Mn contents in the Zn-Mn alloys increases, the grain size of the surface coatings increases and the colour of the Mn coatings changes from a bright and mirror-like silver shine to dark black, but reflective, and consisting mainly of spherical grains [13, 16].
In the deposition of single-phase fcc Al-Mn alloys, increasing Mn content up to 7.5 % leads to a decrease in grain size; Mn contents higher than ca. 10% give rise to the formation of amorphous deposits [14].
The morphological quality of the deposits seems to be correlated with the number of chelating moieties present in the additive: globular deposits with hydrogen-related holes are found with Titriplex-I, closer-packed globuli with EDTA and separate, tinier, pyramidal crystallites tend to form in the presence of DTPA.
COMSOL Simulations: Case i) for d ≥ d* , for example d=40, and ν ∈ I, spotty patterns still arise, but for increasing values of ν the number of spots increases and they become larger and higher, see Fig. 6 and 7.
The Mn electrodeposition experiments reported in this paper - apart from validating our extended mathematical model - have achieved two major metal plating results in their own right: (i) we have shown that chelating agents can play a vital role in the electrodeposition of compact Mn films - though not smooth enough for aeronautic applications - from aqueous solutions with a relatively high cathodic efficiency, their effectiveness seems to correlate positively with the number of chelating moieties present in the molecule; (ii) notably smooth, compact, γ-phase Mn layers can be plated with cathodic efficiencies in excess of 90% from eutectic ionic liquid electrolytes; these layer exhibit both a corrosion performance and a surface finish that can be regarded as adequate for the aeronautic industry.
Online since: April 2020
Authors: Kristýna Hrabová
Nanomaterial concrete is new generation concrete formed of materials of the grain size of nanoscale.
Despite the fact that there is already a number of available definitions, no practical and unambiguous definition of nanomaterials exists.
This definition describes nanomaterials as natural, incidental or manufactured materials containing particles in an unbound state or as an aggregate or as an agglomerate, where 50% or more of the particles in the number size distribution or one or more external dimensions is in the size range of 1-100 nm [5].
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