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In this study, the green synthesis using chemical reduction of Premna serratifolia linn leaf extract was used to produce ZnO nanoparticles.
One of the environmentally friendly methods is chemical reduction using plant extracts in the fabrication process.
These flavonoid and alkaloid compounds can provide a role as a bioreductor in the synthesis of ZnO via chemical reduction.
The XRD data was compared with The Joint Committee on Powder Diffraction Standards (JCPDS) card for hexagonal wurtzite ZnO (JCPDS 036-1451) to identify the crystalline phases present in the samples.
The analysis of the XRD data from the samples synthesized at different calcination temperatures indicates that the obtained peaks match well with the characteristic peaks of hexagonal wurtzite ZnO.

It can remove the redundant information in the original data, and extract the most useful information through data analysis directly.
If the condition attributes set reduction is a nonempty set .
Then is called a reduction, the set of all reduction credited as.
This paper collects hundreds of groups transformers historical fault data, and selects the 30 groups representative samples to transform the training set, 10 groups for test set.
Reduction of decision table.

Reduction in area is affected by second phases and inclusions.
Tensile strength-reduction in area balance Figure 6(a) and (b) shows the variation of percentage elongation and reduction in area as a function of the volume fraction of cementite.
The test data of conventional ferrite-pearlite steel [12], tempered martensitic steel [12] and bainite steel [13] are also plotted in Fig. 7 for the purpose of comparison.
Reduction in area is a measure of formability as well as uniform elongation.
[12] NIMS data base, Materials Information Technology Station, National Institute for Materials Science, Tsukuba, Japan

Energy saving and emission reduction is a necessary way for China to develop low carbon economy.
Thus, there is still a great of potential for energy saving and emission reduction.
Data resource This paper focus on the interconnection between energy intensity and structure evolution and scientific technology progress from 1995 to 2010, we can get the GDP, total energy consumption and each type of energy use in industry from China statistical yearbook 2011 [1], as for the carbon dioxide emission, we take the energy coefficient from IPCC 2006 as reference, which means the carbon dioxide emission coefficient of coal, oil and natural gas are 2.74, 2.14 and 1.63 t/tce, respectively.
The aggregative scientific technology progress index comes from China scientific technology statistical yearbook 2003-2011 [5], because the lack of statistical data from 1995 to 2001, so we only get the data from 2002 to 2010.
Also based on the four models, we make a potential analysis about the two factors on energy saving and emission reduction in the future.

Generally, the technologies of noise control and vibration reduction in railway including isolation, absorption, sound insulation, and sound-absorbing [3].
With a condition of 60km/h speed, analysis results of the data from 2000 Hz to 22000 Hz dispalyed that the equivalent sound level would be reduced for up to 5.4 dBA, and the maximum sound level is diminished about 2.7 to 7.4 dBA.
The function of noise reduction by dampers is due mainly to the significant inhibition of the noise from wheel rail, whose frequency is rather high.
The vibration data of track and platform under the 2000 Hz~22000 Hz band demonstrated a decreasing trend, reflected as more than 2.2~9.6dB reduction in vibration acceleration level, and more than 0.7~8.6dB of the maxmium vibration acceleration level of tracks diminished.
The total noise of the train with a low speed is comprised by a large number of wheel noise contribution, hence, the reduction function by masked damper would be limited to some extent.

But the capacity of dealing with massive data and the efficiency of the mining fault rules are still not ideal.
Information entropy, a measure of the overall uncertainty, can be represented as a data statistical characteristic.
Fault Rules of Power Grid Mining Process Firstly, attribute selection and data cleansing on fault data of power grid, and then setting up fault samples for mining.
The original decision table is established by using fault data.
Conclusions This article uses data mining method which combines rough set attribute reduction theory with association rules in the power grid fault data.

This model provides a relative simple description of hysteresis without needing a large amount of data in a lookup table.
The Bouc-Wen hysteresis model for an active suction block was determined using experimental data from ramp input increasing (0 - 10V) and decreasing (10 - 0V) by voltage rate 1 V/s major loop hysteresis curve sampled at 1 kHz.
The identified hysteresis loops initially appears to fit well to the measured data.
This suggests a 93.28% reduction in major hysteresis loop area.
This larger amount of data allows more accuracy in hysteresis model result.

Table 1 Initial sample collection of 15 data No.
According to the rule set after reduction, we get 8 data.
In order to validate the need of attribute reduction, we let the reduction set R = {a2, a6, a7}, and pick up 150 data as training samples, 70 data as test data.
It toke fully advantage of data reduction features of rough set and excellent sample classification capabilities and high computing precision characteristics of SVM.
A classification data mining algorithm based on rough set [J].

Through field measurement to obtain the wind field characteristics and wind-induced vibration, can be compared with wind tunnel test data, and promote the improvement and development of the wind tunnel test technique.
Structure of information system, therefore, is actually a result of structure design, construction, testing and research, as well as the structure reinforcement scheme such as the comprehensive database, according to different purposes, calls the database of data to carry on the corresponding processing, it is the combination of civil structural characteristics research and information technology.
(3) improve the disaster reduction management in intelligent building design, realize the combination of human and comprehensive disaster reduction.
China's disaster reduction. (12) : 2005-50, 51 [7] Child stars; TaoPeng.
Urban disaster reduction management and intelligent building [J].

The observed reductions in permeability are comparable to those produced by traditional methods such as cement and bentonite grouting.
Assessment of Permeability Reduction Due to Bio-Clogging Figure 3 presents the progression of permeability from the Test BC series.
Simultaneously, data from the BC’ series revealed that dextran concentrations began to increase exponentially between days 5 and 15, corresponding to the active growth phase of the bacterial population.
This two-order-of-magnitude reduction highlights the effectiveness of microbial activity in obstructing pore connectivity.
[12] Greer JA. (2018).Biofilm enabled permeability reduction in sands.