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Online since: March 2010
Authors: Gerardo T. Martinez, Marcelo Videa, Genaro Zavala
This implies the reduction of the bit size, and in consequence, the use of materials with suitable magnetic properties.
Topographical characterization of the electrodeposited particles is presented, as a basis for further magnetic characterization and consideration as a suitable material for magnetic data storage.
For low intensity current pulses, the rate of charge transfer will be in general slow except in certain active places, like scratches, that allow the reduction and nucleation of the Ni atoms.
On the other hand, for the case of high intensity current pulses, the polarization of the electrode may favor the Hydrogen Evolution Reaction (HER) which is known to compete with the Ni reduction [11].
The different distribution of the deposits when a low current pulse or a high current pulse, which involves competition between the Nickel reduction and the HER, suggest a means of controlling the distribution of the nanoparticles in the deposit.
Online since: August 2013
Authors: Wei Rao, Hong Chun Yan, Ding Guo Li
The reduction of the CoO and FeO content is accompanied by a overall reduction of their grain sizes, from 21.3 nm at Tcal =400℃ to 8.4 nm at Tcal =800℃.
This is a consequence of the reduction of the amount of CoO and FeO phases, which reduces their antiferromagnetic contribution to the hysteresis loops, with a corresponding dominance of the magnetic contribution of the CoFe2O4 phase.
The presence of CoO and FeO caused a shift of the magnetic hysteresis cycles and a reduction of their coercivity and remanence ratio as compared to the bulk CoFe2O4.
New York:Wiley(1994) [11] Powder Diffraction File, Joint Committee on Powder Diffraction Standards, International Centre for Diffraction Data.
Online since: January 2011
Authors: Chen Huang, Chen Long, Da Chong Wang
In practical control system,output torque of motor may be represented as , (12) where,Km is torsional stiffness coefficient of motor,G is reduction ratio of motor reduction gear.
(18) where,Mr is equivalent mass of reduction gear,pinion and rack.Br is equivalent damping coefficient of reduction gear,pinion and rack.Kr is equivalent stiffness of pinion,tire and rack.
Simulation and results analysis To the above-mentioned eps model,configuring corresponding sensor 1-6 for six state variables respectively,data processing and iterative analysis is carried out by matlab,fault-tolerant feedback control matrix is obtained.Substituting the above feedback control matrix in eps control system,unit step response of assisted motor output torque to steering torque acting on steering wheel is obtained in the situation of normality and inefficiency.The simulation results are shown in Fig. 3-Fig. 8.
Online since: April 2006
Authors: J. Ding, Jian Yi Lin, T. White, B.H. Liu, Z.L. Dong, Zeng Yong Zhong
Introduction Fe-based magnetic nanocomposites are promising candidates for many applications, such as data storage, catalysts and biomedical diagnosis and pathological treatments.
We investigated the effect of the starting precursor on the mechanochemical reduction process and the morphology of Fe nanoparticles as well as the morphology of carbon nanostructures. 2.
To prepare MgO/Fe nanocomposites, the MX and MA precursors were milled together with Mg powder (Mg as the reduction agent for the displacement reaction of Fe2O3 + 3Mg = 2Fe + 3 MgO) for 24 hours with a ratio of ball to powder of 10:1.
The synthesis of Fe/NaCl nanocomposites was carried out by mechanical milling of the mixture of FeCl3, NaCl and metallic sodium Na (Na as the reduction agent for the reaction of 3Na + FeCl3 = 3NaCl + Fe) for 24 hours with a ball to powder ratio of 6:1.
Fig.1 Mossbauer spectra of (a) oxide precursor MA (80K), (b) the Fe/MgO nanocomposite derived from the precursor MX (298K) and (c) Fe/MgO nanocomposite derived from the precursor MA (298K) (I-α-MgFe2O4 II-Fe0; IIIsuperparamagnetic Fe0 or as-reduced iron oxides; IVparamagentic Fe3+ ) After the mechanochemical reduction, XRD analysis (Fig.2) indicated the formation of metallic bcc-Fe phase in both MX and MA nanocomposites.
Online since: July 2013
Authors: Kang Ping Yao, Chun Yan Hou, Li Geng Yu, Xue En Li
The data is sent to the MAC layer for further operations.
When transport layer receives data from the MAC layer, it does the reverse operation and gets complete data file by combine packages in order.
Nevertheless, for on-sensor feature extraction mode, the sensor node only transmit RMS, kurtosis, fault frequencies and their harmonics in addition to temperature and node voltage, so the data transmission load decrease from 4099B to 70 B, a 98.3% reduction.
(5) So the total energy used for on-sensor feature extraction mode is 27.3mJ, an 88.8% energy consumption reduction compared with raw data transmission mode.
Figure 6 (a) and (b) show the vibration signal and the envelop spectrum through the data collected by the raw data transmission mode.
Online since: April 2012
Authors: Zhi Fei Liu, Chong Huang, Jin Xiang Hong, Jia Ping Liu
The manufacturer reports a reduction in mixing and handling temperatures of 30 to 50℃.
Paving asphalt being thermoplastic materials is rendered fluid with reduction of the viscosity by heating.
It shows a consistent reduction mixing and compaction temperatures with the increasing of Sasobit contents.
COR2R Emission Reductions Through the Use of Warm Mix Asphalt.
Model-fitting the master curve of the dynamic shear rheometer data to extract a rut-controlling term for asphalt pavements, Journal of Testing and Evaluation, 2002,30(2):95-102.
Online since: August 2020
Authors: Charmane Dawn H. Esper, Hana Astrid R. Canseco
(a) (b) (c) Figure 2: Experimental Set-Up for (a) Tensile Strength Parallel to the Surface, (b) Tensile Strength Perpendicular to the Surface, and (c) Flexural Strength using Universal Testing Machine Data Analysis.
This test determines whether a set of data is normally distributed.
This indicates that the data for all the responses follow a normal distribution confirming the applicability of ANOVA.
These values indicate a good correlation of the obtained data for the mechanical responses.
The R2 adj value of 45.05% for the flexural strength suggests that the data contain an inherently amount of variability.
Online since: February 2009
Authors: Di Zhu, Shao Fu Huang, Yong Liu, Wei Wang, Yong Bin Zeng
The current data is acquired by data acquisition card in real time.
It is necessary that the system makes corresponding response in time according to the monitored current data.
The precision lead screw's rotation is driven by stepping motor through a large reduction ratio gear reducer.
Control System The modular structure of the control system software based on Lab Windows CVI includes data acquisition subsystem, processing control subsystem, and human-computer interaction subsystem (fig. 5).
The control system can realize the following operations: reading DXF data, trajectory control, numerical calculation, front panel display, and file operation.
Online since: March 2012
Authors: Yu Cai Dong, Ge Hua Fan, Liang Hai Yi, Ling Zhang, Pu Kai Wang, Min Lin
Projection pursuit method[5] is presented as an exploratory analysis by Friedman and Turkey in 1974, as well as a deterministic analysis of clustering and classification method, whose essence is from a different perspective to observe data, looking to the greatest extent reflects the characteristics of the data and to fully tap the data information of the optimal projection method.
In essential, p dimensional data is integrated into as the value in projected direction.
Through solving the maximum value of projection index function, we can obtain the optimal direction of projection, and fully reveal certain structure features of high dimensional data.
[5] Friedman JH, Tukey JW.A. projection pursuit algorithm for exploratory data analysis[J].
Projection-pursuit-based dimension reduction for visualization of text feature .
Online since: July 2014
Authors: Cheng Sheng Liu, Ren Zhang, Min Zhang
Rural healthcare centers can largely benefit from cloud based models in terms of cost reduction and resource utilization.
Similar system is Electronic Medical Records (EMR)[6] or Personal Health Record(PHR)[7] that able to store medical data for patients.
Because of the application and data is hosted outside of the organization in the cloud computing environment, the cloud service provider ought to use authentication and authorization services.
Recommended technical solutions are hybrid storage architecture which using relational database on structured data management and applying HDFS to unstructured data.
Further work includes system improvement of security and performance and research on data mining of existing health data.
Showing 8701 to 8710 of 40336 items