Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: February 2022
Authors: Vadim Skeeba, Vladimir Ivancivsky, Egor A. Zverev
The efficiency of the integrated technologies is also achieved by reducing the time loss for the operational process execution by eliminating or reducing a large number of intermediate and auxiliary operations.
Based on the proposed methodology, we have developed a software product with a number of important advantages for validating the process equipment specifications.
Further, depending on the functional purpose, the required number of executive movements (EM) and their composition were determined: they can be shaping, installing, dividing, and auxiliary or controlling movements.
At the transition of surface hardening of HEH HFC with high frequency voltage, a microstructure is recorded in the surface layer of the product (Fig. 4), which is martensite and an insignificant amount of small ferrite grains.
Funding The research was funded by RFBR and Novosibirsk region, project number 20-48-540016.
Online since: May 2011
Authors: Chang Hong Li, Yan Cheng, Lei Zhang
Geological exploration line which number is 21 is enumerated in this article, the following is the profiles of geological: Fig.1 Geological profile: exploration line 21 Line Layout.
Fig.3 Two-dimensional inversion of cross-section diagram: three methods was used line 21 Coupling Analysis of Strata Information and Exploration Information of AGI High-Density Resistivity Measurement System The geological profile of the number 21 exploration line is shown in Fig.1, A-B is the range which was detected at the number 21 exploration section of the line, the distribution of Triassic Daye Formation (T1dy) can be seen, this strata which is under the Middle Triassic Lushuihe Formation was turned into rocks as marble by the effect of intruded magma.
Then from Fig.3: data of collection was analyzed by using three methods for number 21 Line detection, resistivity of the region have a range of 6.2 to 311Ω•m, the Quaternary soil was distributed underground within 6m along the survey line direction, the moisture content of soil is high and resistivity is low; a high resistance zone while the position is along the survey line direction from which the starting point 36m to 72m at a depth of 20m was distributed.
Geological data and the results before and after the survey line of profile lines, The number of 21 lines lies in the third sub-section of the seventh lithology Daye Formation (T1dy7-3), Cretaceous Lingxiang Formation (K1L), Majiashan Formation (K1m). the third sub-section of the seventh lithology Daye Formation (T1dy7-3) mainly lithology is marble, and a few amount of dolomitic marble was contained, the color is gray-light gray, structure of thick layer is fine grained texture and massive structure, the cave is developed mainly at this section; formation of this paragraph which is overlying unconformable contact have the top or bottom without the top of the bottomless.
(2) It is coupled with the case of heavy rainfall events, underground drainage a large number of water or other factors that abnormal body of the high resistance region is caused by underground as large empty area shallow buried and cave; then the sudden accidents such as water inrush and gushing mud are caused easy by surface subsidence or conduction of surface water and groundwater which damage operations of underground mining, which was authenticated by surface subsidence in the past
Online since: August 2004
Authors: Jong Seok Heo, Chung In Lee, Seo Kwon Jeon
Number of Hit.
That is, this result is due to the elimination or restraint of closing of pores or friction between grains in accord with the increased confining pressure.
In comparison to granites, the number of AE was smaller and AE with high amplitude at 80% of peak stress was decrease in marble.
Sudden increase stress points of the number of hits can be easily found at each cycle, except the first cycle.
In the 2nd-5th cycles, a sudden increase stresses levels of the number of hits are almost correspond to maximum stress level of the previous cycles.
Online since: March 2014
Authors: Katsuhiro Maekawa, Masatoshi Futakawa, Zhi Hong Xiong, Takashi Naoe
The number of loading cycles will be beyond 108 to reach in gigacycle region throughout the expected lifetime.
Simultaneously, grain boundaries can be weakened by irradiation and radiation-embrittlement can lead to crack formation when an irradiated material is subjected to stress loading [5].
It was proposed that this sudden increase of the temperature allows to determine the cycle number at crack initiation and more than 92% of the total life is devoted to the initiation of the crack.
Fig. 8 Relationship between stress amplitude and number of cycles Fig. 9 Relationship between the number of cycles and residual strength Residual Strength with Fatigue Damage.
It can be seen that the residual strength is independent of the number of cycles, and the difference of the residual strength between the specimen with fatigue damage and without fatigue damage can be negligible.
Online since: July 2011
Authors: Jing Lan Deng, Bing Feng
The absorbing mechanism operates as follows: 1) Each grain of conductive powder becomes a dipole, within which the electromagnetic waves resonate, and the resonance is damped, resulting in attenuation; 2) The attenuation caused by multiple reflections; and 3) The resistive loss of current leakage between the particles of conductor powder.
If it is, a large number of graphite powder particles will be in series contact, forming a strong reflector.
Furthermore, as content increases, the number of interfaces between the graphite powder, resin and fiber particles will increase, resulting in interfacial charge accumulation, forming additional interfacial polarizations, which is not good for absorption loss of electromagnetic waves.
Online since: January 2007
Authors: Dirk Godlinski, M. Dourandish, Abdolreza Simchi
Introduction Rapid prototyping technologies can create physical parts directly from CAD models by generating a number of layers of a given material [1].
Therefore, if sintering is performed at the higher temperatures, the materials turns mushy and rapid densification is attained by particles rearrangement and grain shape accommodation.
Number Drying Time (S) Spreading Speed (mm/s) Layer Thickness (µm) Observations Fine Powders Coarse Powders 1 30 30 75 PL, AP -- 2 30 30 100 UL, PL, AP PL 3 30 30 150 -- PL 4 30 10 75 AP -- 5 30 10 100 UL, PL, AP PL 6 30 10 150 -- Fine PL 7 60 30 75 AP -- 8 60 30 100 UL, AP PL 9 60 30 150 -- Fine PL 10 60 10 75 Best of All -- 11 60 10 100 UL PL 12 60 10 150 -- Best of All PL = pushed layers AP = agglomerated particles UL = unbound layers The agglomeration of powder particles influences the densification of the green part during subsequent sintering.
Online since: January 2010
Authors: Michail Michailov
Although these metals are bulk immiscible, it has been shown in a number of studies that formation of 2D surface-confined alloy at Pb/Cu interface is energetically favorable process.
It forms number of amazing alloyed superstructures: quasi uni-dimensional p(Nx1) phases for Cu(110) [4,6] or domains with Pb-rich and Pb-poor phases for Cu(111) with temperature dependent periodicity. [3].
The advantage of this potential, widely used in contemporary atomistic simulations, relates to its ability for better reproducing real physical properties of surfaces and interfaces including point defects, dislocations, vacancies, grain boundaries, etc. [10].
Online since: May 2011
Authors: Samuel Li
The flows underneath the ice were turbulent, with the Reynolds number exceeding 1.0´106 (not shown).
The bed materials were homogeneous, without complication due to grain size distributions.
This law is valid for flow past a hydraulically rough surface, as is the case for the high Reynolds number flows discussed in this study.
Online since: October 2011
Authors: Jun Wang, Yu Li, Wen He Cui
However, due to the numbered vegetation and lower regeneration capacity of plant resources in arid area or the neighboring areas, most wood need for construction must buy from outside, and make the cost of housing construction greatly increased, Because of this, the use ratio of wood become a luxury symbol of status and financial power in construction, it has made an attached sense beyond the practical value and turn into one of the aesthetic contents in vernacular architecture.
Along with the innovation of material processing, structural style and construction equipment, the kind and number of exploitable building material resources will be greatly increased.
Cotton straw composite grass brick puts dry rice (wheat) straw (that is the section between grain crop’s root and ear) through mechanical finishing, impact and extrusion to form layers of chip structure, and then use hemp rope or wire to pack into blocks.
Online since: August 2013
Authors: Wen Yuan Long, Xiang Yan Zou, Wei Dong Wang, Jun Ping Yao
Hence, dense materials with fine grains can be obtained in a very short holding time [17, 18].
Acknowledgements This research was financially supported by the National Natural Science Foundation of China (Grant Number: 51271091).
The technology project of Jiangxi province Education Department of China (Grant Number: GJJ12420).
Showing 23841 to 23850 of 28673 items