Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: April 2014
Authors: Li Zhao, Qian Liu, Peng Du, Ge Fu, Wei Cao
Then we present the three main steps of the change-point detection approach, dimension reduction by PCA, time-series segmentation for periodical data and F-test for periodical data.
Data Mining, 2001.
Data Mining, 2002.
Data Mining, 2001.
Algorithms for clustering data[M].
Data Mining, 2001.
Data Mining, 2002.
Data Mining, 2001.
Algorithms for clustering data[M].
Online since: February 2015
Authors: Elizaveta Gul, Dmitry Sukhanov, Elena Krutenkova, Anna Zelenskaya, Marina Khodanovich
Also behavioral data were analyzed by ANOVA using main effects design with taking into account Greenhouse-Gesser adjustment.
Hours of individual feeding (10-12 AM) were excluded from analysis of behavioral data.
Daily monitoring showed a reduction in the general locomotor activity of animals treated with nanosized titanium dioxide.
The rats which were given nano-TiO2 showed significant shift of the EEG spectra to low frequencies, which is consistent with behavioral data.
Taking into account the EEG data, this type of behavior probably should be regarded not as a calmer one but as a more depressed behavior.
Hours of individual feeding (10-12 AM) were excluded from analysis of behavioral data.
Daily monitoring showed a reduction in the general locomotor activity of animals treated with nanosized titanium dioxide.
The rats which were given nano-TiO2 showed significant shift of the EEG spectra to low frequencies, which is consistent with behavioral data.
Taking into account the EEG data, this type of behavior probably should be regarded not as a calmer one but as a more depressed behavior.
Online since: November 2013
Authors: Xiu Ping Zhao, Zhi Qiang Gao
The Internet of Things technology used in agricultural products, such as food safety traceability management is taking the technological advantages of the Internet of Things-RFID (Radio Frequency IDentification) is non-contact automatic fast read and write data encryption, in order to achieve a unified management and efficient flow of work in coordination.This thesis reports a production method of conductive nano-silver jet ink.
Obtain the dispersion of silver nanoparticles through chemical reduction reaction.
Take 0.2 mo1·L-1solution of hydrazine hydrate N2H4 • H2O 10 ml, 0.2 mo1·L-1 solution of silver nitrate 10ml, silver nitrate and PVP in the mass ratio of 2 times, respectively, in 20 ℃, 40 ℃, 60 ℃, 80 ℃ under the conditions of the reduction reaction, the experimental results shown in Fig.2.
Obtain the dispersion of silver nanoparticles through chemical reduction reaction.
Take 0.2 mo1·L-1solution of hydrazine hydrate N2H4 • H2O 10 ml, 0.2 mo1·L-1 solution of silver nitrate 10ml, silver nitrate and PVP in the mass ratio of 2 times, respectively, in 20 ℃, 40 ℃, 60 ℃, 80 ℃ under the conditions of the reduction reaction, the experimental results shown in Fig.2.
Online since: December 2024
Authors: Muhammad Hammad Rasool, Maqsood Ahmad, Husnain Ali, Nimra Tariq Bajwa, Numair Ahmed Siddiqui
These metrics underscore the precision of the pH measurements, instilling confidence in the reliability of the acquired data.
This temperature-dependent behavior can be attributed to the reduction in viscosity and density at elevated temperatures.
The collected data serves as a foundational step for optimizing the performance of L-Ascorbic Acid -NADES, allowing for the customization of their properties to suit specific applications.
Ahmad, Synthesis and physico-chemical characterization of novel Epsom salt based natural deep eutectic solvent, Chemical Data Collections, 44 (2023) 101004
Deutsch, Ascorbic acid and dehydroascorbic acid interconversion without net oxidation or reduction, Analytical biochemistry, 247 (1997) 58-62
This temperature-dependent behavior can be attributed to the reduction in viscosity and density at elevated temperatures.
The collected data serves as a foundational step for optimizing the performance of L-Ascorbic Acid -NADES, allowing for the customization of their properties to suit specific applications.
Ahmad, Synthesis and physico-chemical characterization of novel Epsom salt based natural deep eutectic solvent, Chemical Data Collections, 44 (2023) 101004
Deutsch, Ascorbic acid and dehydroascorbic acid interconversion without net oxidation or reduction, Analytical biochemistry, 247 (1997) 58-62
Online since: July 2016
Authors: Qing Song Ma, Li Hui Cai, Kuan Hong Zeng
Data were digitally recorded during a continuous scan in the range of angle (2θ) from 10° to 80° with a scanning rate of 4°/min.
After oxidation at 1500°C, the coating becomes compacted remarkably accompanied by the reduction of crack size.
The carbothermal reduction reaction between rich SiO2 and free carbon in C/SiC composites is proposed to answer for the disappearing of SiO2 phase at 1600°C.
In some local area, foaming as shown in Fig. 9 is observed, which is accessorial evidence for the carbothermal reduction.
It is necessary to improve the oxidation resistance in case of higher temperature or longer time at 1600°C because the carbothermal reduction between viscous SiO2 and free carbon in C/SiC composites has been observed.
After oxidation at 1500°C, the coating becomes compacted remarkably accompanied by the reduction of crack size.
The carbothermal reduction reaction between rich SiO2 and free carbon in C/SiC composites is proposed to answer for the disappearing of SiO2 phase at 1600°C.
In some local area, foaming as shown in Fig. 9 is observed, which is accessorial evidence for the carbothermal reduction.
It is necessary to improve the oxidation resistance in case of higher temperature or longer time at 1600°C because the carbothermal reduction between viscous SiO2 and free carbon in C/SiC composites has been observed.
Online since: July 2014
Authors: Pierfrancesco de Paola, Vincenzo del Giudice
In fact, noise emissions over the normal tolerability limit cause a real estate values reduction and lower marketability in terms of willingness to pay by traders.
Generally, noisy stimuli may be tolerable or not, it follows, therefore, the need to appraisal the real estate values reduction for housing units due to a lower their marketability caused by noise emissions (if these are not tolerable).
The estimated values show a trend in line with observed data, also the residual analysis shows no anomalies.
These results are congruent with information provided by international literature in this sector (average real estate values reduction equal to 0,61% for increase of an noise pollution unit expressed in dB, see table 1).
[15] Day B., Bateman I., Lake I., Estimating the demand for peace and quiet using property market data, Working Paper EDM 06-03, Centre for Social and Economic Research on the Global Environment, School of Environmental Sciences, University of East Anglia, U.K., 2006
Generally, noisy stimuli may be tolerable or not, it follows, therefore, the need to appraisal the real estate values reduction for housing units due to a lower their marketability caused by noise emissions (if these are not tolerable).
The estimated values show a trend in line with observed data, also the residual analysis shows no anomalies.
These results are congruent with information provided by international literature in this sector (average real estate values reduction equal to 0,61% for increase of an noise pollution unit expressed in dB, see table 1).
[15] Day B., Bateman I., Lake I., Estimating the demand for peace and quiet using property market data, Working Paper EDM 06-03, Centre for Social and Economic Research on the Global Environment, School of Environmental Sciences, University of East Anglia, U.K., 2006
Online since: February 2018
Authors: Ya Li Wang, Su Ping Cui, Jianfeng Wang, Guo Lan Tian
Hydrogen temperature-programmed reduction (H2-TPR) was carried out on the 1100 series TPDRO (Thermo) instrument.
In agreement with the thermodynamic predictions, the further reduction of MnO to Mn does not occur in between 0 and 800℃.
In general, the reduction peak of pure NiO shows a sharp reduction peak at about 400-450℃ followed by a small hump [25,26].In the TPR profile of Mn/TiO2 and Mn-Ni/TiO2with CO(NH2)2-NH3·H2O or H2O2 as precipitant preparation of catalysts, the broad superimposing peak of H2 consumption was observed from 388℃, which indicated the reduction of (Mn-Ni)xOy due to the interactions of Ni and Mn atoms (Fig. 4(b)).
The peak at the higher would be related to the reduction process of Ni2+ species [27].
TPR data results are in agreement with XPS results that the absence of the high-temperature peak indicates that the dominant phase in the Mn-Ni/TiO2 catalysts is MnO2.
In agreement with the thermodynamic predictions, the further reduction of MnO to Mn does not occur in between 0 and 800℃.
In general, the reduction peak of pure NiO shows a sharp reduction peak at about 400-450℃ followed by a small hump [25,26].In the TPR profile of Mn/TiO2 and Mn-Ni/TiO2with CO(NH2)2-NH3·H2O or H2O2 as precipitant preparation of catalysts, the broad superimposing peak of H2 consumption was observed from 388℃, which indicated the reduction of (Mn-Ni)xOy due to the interactions of Ni and Mn atoms (Fig. 4(b)).
The peak at the higher would be related to the reduction process of Ni2+ species [27].
TPR data results are in agreement with XPS results that the absence of the high-temperature peak indicates that the dominant phase in the Mn-Ni/TiO2 catalysts is MnO2.
Online since: September 2005
Authors: Bert Verlinden, I. Samajdar, P. Ahmedavadi, Vivekanand Kain, P.K. Dey, D.N. Wasnik
This was cold rolled to
different reductions (20-80%) by unidirectional and by cross rolling and then solution
annealed (1050°C, 1h).
OIM (Orientation Imaging Microscopy) data acquisition and analysis were carried out with the standard TSL (Tex-Scan Ltd.) package.
The solution annealing followed by cold the respective cold reductions caused a consistent pattern of grain boundary randomization with increase in the reduction percentage, see table I.
Optical micrographs of cross sectional surfaces of type 304 stainless steel tested as per G-123 ASTM, showing typical (a) initiation as intergranular crack, (b) propagation as mixed mode (intergranular and transgranular) crack of samples with lower percentage of reduction, and (c) no crack in most region of samples with high percentage (80%) of reduction in thickness.
Material and Condition Fraction of Random boundaries Time of Testing (h) Type of Crack Annealed 0.32 144 TG 20% reduction + annealed + sensitized 0.46 144 IG 40% reduction + annealed + sensitized 0.51 144 IG 60% reduction + annealed + sensitized 0.72 144 IG 80% reduction + annealed + sensitized 0.77 144 TG 0 1 2 3 4 5 6 7 8 9 10 0.024 0.026 0.028 0.03 0.032 0.034 0.036 0.038 0.04 Effective Grain Boundary Energy [((Σγifi)4/d))/γmax] /micron DL-EPR Ratio 304-U 304-CR Figure 4.
OIM (Orientation Imaging Microscopy) data acquisition and analysis were carried out with the standard TSL (Tex-Scan Ltd.) package.
The solution annealing followed by cold the respective cold reductions caused a consistent pattern of grain boundary randomization with increase in the reduction percentage, see table I.
Optical micrographs of cross sectional surfaces of type 304 stainless steel tested as per G-123 ASTM, showing typical (a) initiation as intergranular crack, (b) propagation as mixed mode (intergranular and transgranular) crack of samples with lower percentage of reduction, and (c) no crack in most region of samples with high percentage (80%) of reduction in thickness.
Material and Condition Fraction of Random boundaries Time of Testing (h) Type of Crack Annealed 0.32 144 TG 20% reduction + annealed + sensitized 0.46 144 IG 40% reduction + annealed + sensitized 0.51 144 IG 60% reduction + annealed + sensitized 0.72 144 IG 80% reduction + annealed + sensitized 0.77 144 TG 0 1 2 3 4 5 6 7 8 9 10 0.024 0.026 0.028 0.03 0.032 0.034 0.036 0.038 0.04 Effective Grain Boundary Energy [((Σγifi)4/d))/γmax] /micron DL-EPR Ratio 304-U 304-CR Figure 4.
Online since: May 2020
Authors: Pavel Grudinsky, Ekaterina Podjelnikova, Valery Dyubanov
The methods of pyrometallurgical processing of ZLR by reduction smelting [8], reduction roasting [9-11], flotation processing with preliminary sulphiding roasting [12], roasting with Na2CO3 [13-15] are known.
XRD pattern of ZLR sample Fig. 2 and 3 show the flowsheets that were developed for selective dissolution of different zinc and copper phases based on the data in [22].
Due to the absence of thermodynamic data for ktenasite Cu2.4Zn2.6(SO4)2∙(OH)6∙6H2O it was recalculated to the corresponding sulphates of zinc ZnSO4∙6H2O and copper CuSO4∙5H2O.
Mixture components ZLR to iron sulphate ratio Recovery rate [%] Zn Cu Fe 1 ZLR without roasting - 23.5 41.8 - 2 ZLR + FeSO4∙7H2O 1:2 99.5 88.9 2.6 3 ZLR + Fe2(SO4)3∙9H2O 1:1 98.5 89.1 1.8 The obtained data shows that sulphatizing roasting leads to much more complete recovery of zinc and copper compared to the unroasted ZLR.
Yuan, Recovery of iron from zinc calcines by reduction roasting and magnetic separation, Miner.
XRD pattern of ZLR sample Fig. 2 and 3 show the flowsheets that were developed for selective dissolution of different zinc and copper phases based on the data in [22].
Due to the absence of thermodynamic data for ktenasite Cu2.4Zn2.6(SO4)2∙(OH)6∙6H2O it was recalculated to the corresponding sulphates of zinc ZnSO4∙6H2O and copper CuSO4∙5H2O.
Mixture components ZLR to iron sulphate ratio Recovery rate [%] Zn Cu Fe 1 ZLR without roasting - 23.5 41.8 - 2 ZLR + FeSO4∙7H2O 1:2 99.5 88.9 2.6 3 ZLR + Fe2(SO4)3∙9H2O 1:1 98.5 89.1 1.8 The obtained data shows that sulphatizing roasting leads to much more complete recovery of zinc and copper compared to the unroasted ZLR.
Yuan, Recovery of iron from zinc calcines by reduction roasting and magnetic separation, Miner.
Online since: July 2015
Authors: Rizalman Mamat, Mohd Hafizil Mat Yasin, Perowansa Paruka, Mohd Hafiz Ali
Generally the engine and the fuel can be developed and been produced for the minimal emission reduction which can be released without harmful the environment.
Exhaust gasses treatment is necessary for the emission reduction but the latest technology still cannot achieve the treatment stage.
The exhaust gasses were recirculated into the air charge and decreased the cylinder temperature for the NOx reduction.
K-type thermocouples were attached to the engine oil sump, exhaust extractor and the end of the exhaust pipe for the temperature measurement. 8-Channel temperature indicator from PICO data logger was used as temperature data logger in the experiment.
GasMalaysia, "Liquefied Petroleum Gas (LPG) Chemical Safety Data Sheet," in Physical and Chemical Properties, ed.
Exhaust gasses treatment is necessary for the emission reduction but the latest technology still cannot achieve the treatment stage.
The exhaust gasses were recirculated into the air charge and decreased the cylinder temperature for the NOx reduction.
K-type thermocouples were attached to the engine oil sump, exhaust extractor and the end of the exhaust pipe for the temperature measurement. 8-Channel temperature indicator from PICO data logger was used as temperature data logger in the experiment.
GasMalaysia, "Liquefied Petroleum Gas (LPG) Chemical Safety Data Sheet," in Physical and Chemical Properties, ed.