Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: June 2014
Authors: Yan Wang, Shan Shui He
Due to nuclear power, wind power is few in number, is ignored in the calculation, only to hydropower data representative of power.
The biological resources consumption items in accordance with the "China Statistical Yearbook" into the grain (wheat, corn, soybean, rice), edible vegetable oil, meat(pigs, cattle, sheep, poultry and eggs), fruit, milk, fresh vegetables, aquatic products, nuts and nuts, wine and a total of 38 item.
Table 3-2 Biological productive land type and the corresponding export commodities Cultivated land Pig pork chicken eggs vegetables cultivated cereal grain edible oil fruits and nuts peanut cotton fabric silk pig temples casings Grassland Beef, rabbit hair down and feather Woodland Tea medicinal natural honey canned mushroom logs sawn timber furniture bamboo rattan grass Liubian products, paper and paperboard Water Water seafood sashimi Table 3-3 Energy trade footprint (unit: hm2) Direct ecological footprint Embedding trade ecological footprint The total ecological footprint of energy trade Year Import Export Import Export Import Export 2002 225.44 206.77 396382 2224392.3 396607.44 2224599 2003 286.56 238.44 405168 2235589.5 405454.56 2235828 2004 3812.75 2154.75 1141 1802381.30 4953.75 18024536 2005 393.73 201.9 1243.2 1951522.00 1635.93 1951724 2006 457.17
Online since: July 2020
Authors: Malik Anjelh Baqiya, Fahmi Astuti, Retno Asih, Darminto Darminto, Niken Sylvia Puspitasari, Deril Ristiani
The number of defects developing in each step will affect the magnetic behavior.
This phenomenon might be supported by XRD data, which shows the broad feature of the peak indicating a smaller grain size.
The smaller grain size allows the formation of random magnetic domains so that saturation magnetization increases.
Online since: January 2017
Authors: Gao Lei Xu, Zhen Yang, Hao Feng Xie, Lijun Peng, Guo Jie Huang
The Cr phases on the grain boundary are difficult to dissolve in the matrix and tend to get together and spheroidized during the homogenization, since the Cr content of the alloy is in excess of the equilibrium solubility.
The higher the temperature, the larger the Cr phase on the grain boundary.
It is interesting to note that a large number of Cr precipitates are evenly distributed in the matrix and the eutectic structures are pinned by some Cr precipitates during the homogenization treatment, as shown in Fig. 4 (a).
Online since: August 2014
Authors: Robert Černý, Martin Keppert, Eva Vejmelková, Dana Koňáková, Monika Čáchová
Number of quarries is changing every year, depending on an economic situation and possibilities of quarrying.
The structureof sandstone is formed by grains (with different dimensions and shapes) and by a binder.
Table 1 Material characterization Attribute Colour Quarry Grain Stratigraphy S1 quartzose, calcareous, micaceous bluish grey Bzová irregularly Svodnice S2 quartzose, siliceous white Krákorka irregularly Bohdašín S3 quartzose, slightly siliceous, glauconitic greenish yellow Libná irregularly Korycany S4 quartzose, siliceous, feldspathic ochre Božanov medium Jizera S5 quartzose, siliceous, glauconitic greenish grey Záměl medium Korycany S6 quartzose, slightly siliceous greyish white MšenéLázně irregularly Korycany Experimental methods Basic physical properties.
Online since: October 2017
Authors: Tadahiro Wada
The addition of Si to TiN coatings transforms the [111] oriented columnar structure into a dense finely grained structure, and thin films of Ti-Si-N have been deposited by physical vapor deposition to improve the wear resistance of TiN coatings [7].
Furthermore, the hardness of the AlCrSiWN coating film is higher than that of the AlCrN at temperatures below 700 degrees Celsius [9], and the addition of Si leads to grain refinement and significantly affects the phase composition and the mechanical properties owing to the formation of amorphous Si3N4 [10] and [11].
Acknowledgment This work was supported by JSPS KAKENHI Grant Number 24560149 (Grant-in-Aid for Scientific Research (C)).
Online since: August 2013
Authors: Hui Ou, Le Hua Yu, Shuang Xi Zhou
Table 4 Grain size distribution of aggregates [mass%] Sieve size[mm] <0.16 0.16 0.315 0.63 1.25 2.5 5.0 10 16 19 26.5 Fine 100.0 98.8 91.2 64.6 35.8 17.8 7.0 Coarse 99.6 99.5 97.9 58.9 21.9 0.0 High-range water-reducing admixture.
Table 5 presents the details of 10 different concrete mixture proportions, here the plain concrete (Number 1, Sign O) without mineral admixture was acted as reference concrete.
Table 6 Properties of fresh concrete Number Sign Slump[mm] Density[kgm-3] air content [%] 1 O 212 2400 1.24 2 A1B2 215 2390 0.95 3 A2B1 223 2380 0.97 4 A3 212 2380 0.94 5 B3 225 2370 0.95 6 A2B2 223 2370 0.78 7 A1B3 215 2380 0.80 8 A3B1 217 2380 0.76 9 A4 230 2375 0.75 10 B4 232 2390 0.81 Strength of concrete specimens.
Table 7 Strength of concrete specimens Number Sign Flexure strength[MPa] Split tension strength[MPa] 7d 28d 90d 28d 1 O 4.35 5.87 6.19 2.70 2 A1B2 4.76 5.77 6.76 2.72 3 A2B1 4.33 5.29 5.89 2.89 4 A3 3.59 5.52 7.13 3.14 5 B3 4.92 6.39 7.19 3.78 6 A2B2 4.69 6.72 7.86 2.82 7 A1B3 4.74 6.41 7.38 3.53 8 A3B1 3.85 5.70 6.05 2.81 9 A4 3.50 4.98 6.24 3.33 10 B4 4.96 6.88 7.44 3.26 Flexure strength of concrete.
The cement dispersing mechanism makes available more cement grain surfaces to be accessible for the water, thus, early hydration is more complete [1,7].
Online since: March 2007
Authors: Christian A. Widener, Dwight A. Burford, Brijesh Kumar, J.E. Talia, Bryan Tweedy
Literature Review FSW produces a dynamically recrystallized grain structure in the nugget, which has reached near-solutionizing temperatures, before being "quenched" by the surrounding material back to room temperature at the completion of the weld.
PWAA can also be used to modify the distribution of precipitates in the final joint to influence strength and corrosion properties, and has been demonstrated to be beneficial for a number of alloy and temper combinations.
In addition, the propensity for abnormal grain growth, reported by many researchers in the nugget and TMAZ, discourages the use of solution heat treatment following FSW as a primary mode of improving its resistance to corrosion.
The two PWAA treatments performed comparably to or better than the parent material in FCP for both crack length vs. number of cycles and da/dN vs.
No. of Cycles Al-7075-T73 (0.125" thick) 0.30 0.50 0.70 0.90 1.10 1.30 1.50 1,000 10,000 100,000 1,000,000 Number of Cycles Crack Length (in) 7075-T73_100 hrs@225F 7075_325_2hrs 7075_325_4Hrs 7075-Parent-01 7075-Parent-02 7075-Parent-03 Naturally Aged da/dN vs.
Online since: July 2025
Authors: Safira Vanisa, Selma Wulandari, Nuryono Nuryono, Bambang Rusdiarso
D= kλβcosθ (4) where D is the grain size of the crystal, λ is the wavelength of X-ray radiation (nm), K is the Scherer constant (0.9), β is FWHM (radians), and θ is the Bragg angle (radians).
C-S-H gel hydrates the permanent cement of C3S by filling the spaces between the tricalcium grains.
This is because CuONP can reduce the number of nano-sized pores in C-S-H while also strengthening the microstructure of the MTA/CuO cement composite.
The wave number at 1026 cm-1 is the Si-O-Cu absorption peak derived from the shift in the SiO2 absorption peak [30].
Acknowledgments The authors gratefully acknowledge the Ministry of Education, Culture, Research and Technology, Republic of Indonesia, through a grant of Regular Fundamental Research (PFR), contract number 3152/UN1/DITLIT/DitLit/PT.01.03/2023 for financial support.
Online since: March 2014
Authors: Domenico Furfari
Lomonodov observed twinning in steel ferrite grains in the depth of the material for more than 0.5mm below the surface after a laser pulse [3].
In 2008 the ultra-compact LPwC system (1.5m long and 30kg) was developed; this represents a significant milestone versus versatility, accessibility as well as reliability due to smaller number of parts reducing the operational and maintenance cost of the system.
Although the fatigue initiation resistance of an integral structure is considerably increased because the reduction of the number of fasteners (i.e. stress concentration points) the fail safe and damage tolerance behavior is reduced.
Large number of tests was carried out in Oxford University where a biaxial fretting fatigue test rig was developed for this specific configuration [36].
Kuroki, “Laser processing for reducing core loss of grain oriented silicon steel”, J. of Applied Physics, Vol. 53 (1982), 2410
Online since: June 2013
Authors: Ørjan Fyllingen, Henrik Sture, Ragnar Gjengedal
This will limit the number of suppliers and set focus on manufacturing method rather than an overall reliable system including the mechanical components and their joining.
In general one would expect higher yield-strength and higher tensile strength for forged components due to the reduced grain size [4] .
The FCC-structure is known for having a less steep increase in yield strength with decreasing grain size [6].
The number of tensile specimens was 21 for the “A”-series, and 7 for each of the other series in both bar dimensions.
The gasket ring dimensions were adopted from ASME B16.20 standard [18] and are valid for a groove number of R24.
Showing 22081 to 22090 of 28673 items