In recent years, metal corrosion causes serious threats to the economy of world and living environment. Hence, it is very important seek non-toxic environmentally friendly materials with anti-corrosion properties for sustainable development society. The barrier graphene oxide (GO) special electrochemical property polyaniline (PANI) can significantly improve resistance metals. Herein, we developed an in-situ polymerization method prepare oxide/polyaniline (GO/PANI) nanocomposites unique...

Abstract At present, high-sensitivity, high-penetration-depth, and accurate tissue resolution clinical imaging effect are required, while computer transverse scanning, microwave imaging, fluorescence (FL) cannot meet the requirements of but magnetic resonance (MRI) can dissecting details. The MRI is closely related to contrast agent (CA). As an important type CA, Fe 3 O 4 its analogues have been widely concerned because their low toxicity relatively price. In this review, we summarize...

The journal retracts the article titled “Influence of DETA on Thermal and Corrosion Protection Properties GPTMS-TEOS Hybrid Coatings Q215 Steel” [...]

High-performance coating could be used to protect steels in engineering. The GPTMS-TEOS hybrid coatings were successfully prepared using (3-glycidoxypropyl) trimethoxysilane (GPTMS) and tetraethylorthosilicate (TEOS) as reaction raw materials diethylenetriamine (DETA) both a curing agent catalyst at room temperature. contained amorphous SiO2 was characterized by means of X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission...

Due to the expansion of high-speed Internet access, need for secure and reliable networks has become more critical. The sophistication network attacks, as well their severity, also increased recently. In this paper, a new intelligent intrusion detection system been proposed using SVM ensemble. ensemble was made two-layer, one is composed by five decided winner-take-all, other classifier majority voting. KDD99 data sets used test which achieve better performance.

To improve the performance of secondary structure prediction, a multi-SVM ensemble was applied, bagging used to resample training dataset. The SVM made two-layer, one is composed by three network decided winner-take-all, other five classifier majority voting. Seven-fold cross-validation test on RS126 dataset indicated that could achieve better prediction.

The part fabricated by fused deposition modeling (FDM) process is influenced fabrication parameters viz., layer resolution, processing quality, fill mode and the material on surface roughness.In this work, effects of are investigated experimentally.The test specimen designed levels various factor setup respectively.Then Taguchi's parameter design applied to find optimum for top roughness sides roughness.The evaluation expressed as signal-to-noise (S/N) ratio .Finally main effect plot S/N...

This paper presents experimental investigations on influence of fabrication parameters and material features viz., layer thickness, build orientation, processing quality tensile strength parts built by fused deposition modelling (FDM). The specimen is designed according to GB/T 1040.2/1BA/1 which maintains the test. And factor levels are setup account materials equipment for FDM. Then Taguchi's parameter design applied find optimum maximize FDM parts. As experiment plan base orthogonal test...

During the design optimization of excavator boom, there are many variables and complicated processes. The original methods mainly focused on mathematical models, they lacked consideration in use domain knowledge, design-specification expert experience historical examples. In order to comprehensively utilize knowledge this study uses process analysis, expression coding processing technology encode boom structure, builds an optimal system based guidance, realizes automatic structure....

This paper considers the problem of asynchronous observer-based finite-horizon control Markov jump systems (MJSs) with actuator saturations. The hidden model is employed to describe phenomenon between controller and plant, where observer designed has its own jumping mode that different from controlled plant. purpose this develop an ensure H <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">∞</sub> performance index, over a given finite-horizon,...

The reconstruction of the profile curve damaged parts in absence an original technical drawing is important process part repair.Part damages are complicated and changeable.To reduce material removal rate during repair maintain a smooth flawless after being repaired, smoothing strategy using laser displacement sensor to measure was proposed this study.This established adaptive measurement mechanism by building automatic motion platform.A staged data constructed on basis locally weighted...

According to the shortcomings of traditional two-dimensional Otsu threshold method in segmentation accuracy and anti-production performance, an improved based on weighted image is proposed. On basis cross-division histogram, distribution information gray level probability value used comprehensively consider influence inter-class variance intra-class segmentation, by ratio target background image, which makes closer ideal threshold. Finally, simulation experiment carried out verify that can...

In this paper, according to analyzing the domestic and foreign recent research status future developments of open architecture CNC system, an soft system with configurable based on PC + programmable I/O interface card has been studied.The is studied for drawbacks existing unresolved problems preliminary study presented by group, satisfy development requirements low cost, high performance that means speed, precision large amount data processing, modularization.Meanwhile, dissertation makes...

In this paper, a new online method is proposed to measure and identify the spindle thermal error of machining center. The firstly established by comprehensive identification model including geometric error. Then multi-viewpoint modeling based on stereo vision adopted obtain solution deformation without influence A software developed inspect compensate consisted four modules, measurement module, compensation module analysis module. It can not only be able quickly detection, but also...

This paper presents experimental investigations on influence of fabrication parameters viz., layer resolution, processing quality, fill mode and the material dimensional accuracy fused deposition modelling (FDM).The test specimen is designed levels each factor are setup.Then Taguchi's parameter design applied to find optimum setting minimize percentage change in direction X, Y Z specimen.As percentages changes obtained, signal noise ratio defined evaluate variation.Then main effect plot...

In view of the deficiencies existing in current knowledge-based global numerical optimization for excavator stick such as insufficiency acquiring and utilizing process knowledge to guide stick, easily falling local optimal solution so on, genetic algorithm is proposed. By establishing selecting operator, crossover operator mutation based on realize sufficiency intelligent stick. The structural ear-plate medium hydraulic taken example, which demonstrates that feasible efficacious.