Search Options

Sort by:

Sort search results by

Publication Type:

Publication Type filter

Open access:

Publication Date:

Periodicals:

Periodicals filter

Search results

Online since: October 2014
Authors: Wen Bin Cui, Zhi Quan Zhang, Chang Jian Song, Hong Bin Ma, Feng Min Su
NI Data acquisition unit is applied to record the temperatures from the experimental apparatus.
Labview software (by National Instruments) was used to program and control the data acquisition unit from a desk top computer.
After steady state conditions were reached the temperature data from the thermocouples were recorded.
The heat flux data for different experimental conditions were compared in this study.
The percentage enhancement was calculated by interpolating the heat flux data from boiling experiments at a particular heater temperature.
Online since: June 2013
Authors: Ting Ting Lang, Fei Lv, Qi Li Liao
And the experiment environment must be as dark as possible, so to ensure that background light does not affect the experimental data.
Finally we will acquire accurate data and draw exact conclusions.
In addition, the experiment is repeated 3 times, and several experiments is to avoid wrong conclusions and data.
Finally calculating the average values, and ulteriorly to ensure data to be accuracy and reduce errors.
Then classifying the data and using curve fitting of matlab to get changing trend charts of each parameter.
Online since: May 2015
Authors: Mohd Amran, Hazman Hasib, Shahrul Imran, Zulkeflee Abdullah, Nor Salim Muhammad, Rosidah Jaafar
All the data and information related to this project has been sought and explored in the literature review.
c) Locations of datums are identified.
The focus of the second trial was to see if there’s any reduction in time, where initially the time wasted and time loss looking for CF parts have been major problem in this process.
Online since: February 2014
Authors: Yu Fei Tan, Xue Dan Zhang, Tian Tian Zhang, Chuan Kai Niu
Due to the low levels of the design and construction technology in the countryside of northern cold region, energy consumption and indoor environment in rural residential buildings cannot be controlled effectively, which becomes one of the most prominent problems in rural energy efficiency and emission reduction.
To learn the present situation of energy consumption and indoor environment in rural buildings, this paper adopts the method of field investigation and data analysis to analyze the building envelopes situation and the energy structure.
Online since: July 2012
Authors: V. Teixeira, J.O. Carneiro, S. Azevedo, F. Fernandes, J. Neves
Methylene Blue dye is a heterocyclic aromatic chemical compound which has been widely used for photodegradation studies since it is an oxidation-reduction indicator.
From the transmission data it is possible to obtain the decrease in the solution concentration as a function of UV irradiation time.
From the experimental data in Fig. 7, it is observed that the coated NP-G sample shows the highest photoactivity; this sample, presents the highest photodegradation rate constant (~ ).
The analysis of the transmittance data also allows us to obtain the photocatalytic efficiency (h %) according with the following equation: (5) where T is the solution transmittance at t = 240 min and the subscript 0 is related to time zero (t = 0).
Wettability (self-cleaning) properties Surface wettability was evaluated via contact angle measurements in a dynamic mode using Young La Place method (Contact Angle System S.A data physics) with 5µl/s of distilled water droplets.
Online since: July 2022
Authors: Elise Marchand, Antonin Gay, Zafer Koont, Nicolas Legrand, Nelson Souto
SET 1 SET 2 SET 3 Units Initial Optimal Initial Optimal Initial Optimal Fcost 0.1519 0.0167 0.1840 0.0192 0.5231 0.0163 μm2 Fcost reduction - -89.0% - -89.6% - -96.9% - Avg.
First ANN trials to predict wear were not very conclusive, mostly due to the lack of learning data.
The ANN uses (i) 2 hidden layers of neurons defined by a total of 20 neurons, using selu and sigmoid activation functions, and (ii) recurrent architecture to account for the cumulative wear calculated from previous strips as input data.
Nevertheless, this work is a first shot at ANN wear models and additional data could greatly improve their performances, by reducing the overfitting for instance.
On the other side, ANN have important potential for bigger training database and additional data which, assorted with bigger ANN structure, could lead to much better roll wear predictions.
Online since: February 2026
Authors: Dhyna Analyes Trirahayu, Herawati Budiastuti, Akmal Bachtiar, Thofanda Muharam, Laily Isna Ramadhani
According to data from the Central Agency for Technology Assessment of Indonesia, the demand for fuel oil is projected to increase by 2.8% per year from 2019 to 2050.
According to data from the Central Statistics Agency [8], in 2021, avocado production in West Java reached 121,326 tons, with an annual increase from 2018 to 2022.
After the drying process, a size reduction process was carried out with a passing size of 120 mesh.
Size reduction serves to expand the contact area during the reactive extraction process.
Lethulur, Waste cooking oil conversion to biodeisel catalized by egg shell of purebred chiken with ethanol as a solvent, Eksakta: J. of Sci. and Data Analysis, 14(1) (2014) 52-64
Online since: May 2012
Authors: Ping Quan Wang, Yang Bai, Gang Peng, Zhi Wei Qian
In the high temperature conditions, if the drilling fluid does not have a good performance of anti-temperature, there will exist the deterioration of rheological system such as viscosity thickening or reduction or even solidification with the loss of rheology, etc., damaging the thermal stability of the system, and seriously influencing on drilling operations .
As is shown in Table 1, the sticking, cutting and amount of fluid loss of the optimized three drilling fluid systems with high-temperature high-density resistance and saturated brine at high temperatures with time, rarely change, the same with the performance after being rolled for 16 hours consistently, which fully demonstrates that all three systems have good thermal stability (rheology, wall capacity). 2.Evaluation of anti-pollution During drilling deep formations, it is of frequency for drilling gypsum layer, saline aquifers, the cement plug, leading to salt or calcium of drilling fluid, and resulting in reduction of drilling mud cake density and increases of permeability.
Table 3 Results of rolling recovery ratio experiment Drilling fluid formulation Experimental conditions Recovery quality (g) recovery ratio (%) Distilled water +50g debris 180℃×16h 14.98 30.0 A+50g debris 180℃×16h 49.8 99.6 Distilled water +50g debris 200℃×16h 10.76 20.38 B+50g debris 200℃×16h 49.0 98.0 Distilled water +50g debris 220℃×16h 9.36 18.76 C+50g debris 220℃×16h 48.64 97.28 Note: 1, The debris refers to Sichuan red dust, cuttings is from 6 to 10 mesh, the recovery rate is the same with that of 40 mesh shale; 2, In Table 4 the results are the mean value of four experimental data.
(2) Linear expansion experiment From the experimental data in Table 4, 2 hours later, the linear expansion rate of distilled water is 12.7 times of system A , 11.5 times of system B, and 10.7 times of system C; 16 hours later, the linear expansion rate of distilled water is 17.1 times of system A , 14.8 times of system B, and 14.1 times of system C.
The reasons lie in: (1) lubricants are easy to have high-temperature cross-linking reaction with other processing agents, such as forming insoluble salts through the interaction with high cation Ca2+, Mg2+, leading to lubricant's emulsion breaking and being "inactive" with reduction of the lubrication performance ; (2) Under high temperature lubricant degrades, which results in the function loss of lubricant partially or totally; (3) Under high temperature lubricant circulates constantly, leading to the constant evaporation, so that the available parts of drilling fluid lubricant gain reduction.
Online since: November 2011
Authors: Manoj Gupta, Tirumalai S. Srivatsan, Muralidharan Paramsothy, C. Godbole
There is considerable reduction in grain size of the AZ31/1.0 vol. % CNT nano composite (Figure 1b) when compared to the unreinforced magnesium alloy (AZ31) (Figure 1a).
The observed reduction in grain size is attributed to the presence of the reinforcing nanosize CNT, which act as potential nucleation sites and also playing the role of an obstacle for impeding grain growth during casting.
To better understand the intrinsic influence of ductility of the material on high-cycle fatigue response the test data shown in Figure 2 is re-plotted in terms of maximum elastic strain (defined as smaximum / E).
A reason for the observable reduction in cyclic fatigue life or low fatigue life at the higher values of maximum stress is primarily because a high stress facilitates rapid initiation of one or more fine microscopic cracks, with concurrent microscopic crack growth through the microstructure and eventual coalescence to form a macroscopic crack.
Based on the presentation of the test data the nanocomposite reveals a higher endurance limit when compared to the monolithic magnesium alloy (AZ31) at both the load ratios studied, i.e., R= 0.1 and R = -.1.0.
Online since: August 2008
Authors: K. Uchino
The basic required technologies seem to be maturing and a drastic cost reduction period started.
The cofiring technology provided a dramatic reduction of the manufacturing cost of the printer head, in addition to the performance improvement; that is, the unnecessary vibration of the ink chamber was suppressed.
Figure 9 shows the current best data reported by Toyota Central Research Lab, where strain curves for oriented and unoriented (K,Na,Li) (Nb,Ta,Sb)O3 ceramics are shown [8].
Showing 17721 to 17730 of 40694 items