Spatial information analysis of characteristics of soil trace element contents in high incidence areas of birth defects by ZHANG Zhuo-dong, ZHANG Ke-li, WU Ji-lei, ZHANG Ting, ZHENG Xiao-ying

“…Based on the correlation analysis between the distribution of soil element contents and birth defects, to study the anomaly characteristics of soil elements in high incidence areas of birth defects, and provide scientific basis and new approach for the screening of sensitive factors that induce birth defects, two counties Zhongyang and Jiaokou of Shanxi Province were selected as research area, according to the investigation route and villages of epidemic, soil samples were collected in every village, the contents of 16 kinds of elements in the soil, Al, As, Ca, Cu, Fe, K, Mg, Mo, Na, Ni, Pb, Se, Sn, Sr, V, Zn were measured. …”
Get full text

WELD DEFECT ANALYSIS IN A PRESSURE PIPELINES USING 2D AXISYMMETRIC FINITE ELEMENT ANALYSIS IN ABAQUS by Muhammad Sohail Ashraf

“…This study concludes the significance of carefully selecting mesh element types and sizes. Quadrilateral quadratic elements capture detailed stress distribution in the curved geometries. …”
Get full text

Applying Finite-Element and Boundary-Element Methods to Select Rational Design Version of Weld-Fabricated Bogie Frame Brackets of Locomotives and Railway Cars by O. A. Rusanov, V. V. Kochergin, A. A. Bukhantsev, V. V. Brekson

“…At the first stage general stressed state of a bogie frame as a whole is examined by applying finite-element method. At the second stage special features of 3D stress distribution within the individual bracket are studied in detail using boundary-element method with due regard for factors of geometric concentration of stresses within the potential welding defects zones. …”
Get full text

Study on Critical Defect Size of HTPO Inner Repaired Pipelines by GAO Duo-long, GE Peng-li, GAO Liang, LIU Qing-shan, XIAO Wen-wen, XU Yan-yan, CHEN Ying-feng, LIU Dong-huan

“…But, there is no clear understanding on how to select inner repair material reasonably on site. To solve this problem, by simplifying the actual engineering problem into a physical model, the finite element software was used to establish the relevant model for calculation, which could give the critical defect size of the HTPO inner repair pipeline and could be verified by full-scale hydraulic test. …”
Get full text

Reduced Inter-Element Interference mmWave MIMO Antenna and Its Application in WBAN by Jawad Ahmad, Mohammad Hashmi

“…The proposed approach employs a combination of defective ground structures (DGS) and frequency-selective surfaces (FSS) to achieve effective isolation enhancement. …”
Get full text

Non-invertible defects on the worldsheet by Sriram Bharadwaj, Pierluigi Niro, Konstantinos Roumpedakis

“…By requiring that the defects are topological, we find that they correspond to a non-Abelian zero-form symmetry acting on the fields as elements of O(d; ℝ) × O(d; ℝ), and on momentum and winding charges as elements of O(d, d; ℝ). …”
Get full text

Machine Learning Approaches for Software Defect Prediction by Hijab Zehra Zaidi, Ubaid Ullah, Muddassira Arshad, Hanan Aljuaid, Muhammad Arslan Rauf, Nadeem Sarwar, Rimsha Sajid

“…This paper analyses existing research about machine learning approaches in software defect prediction as a key element for improving software reliability and quality. …”
Get full text

Progress of performance optimization for Mn-based SCR catalysts at low temperature by Yun XU, Boyu WU, Ke ZHUANG, Qian ZHANG, Jingxin XU, Shengen ZHANG, Fahua ZHU, Bolin ZHANG

“…Elemental doping modification is the primary method for optimizing the N2 selectivity and H2O/SO2 tolerance of these catalysts. …”
Get full text

Managerial elites and electorate of southern Russia in connection with the 2024 presidential elections: external and internal factors of stabilization and destabilization by V. S. Semenov

“…A change in the political landscape and corresponding adjustments to the positions of parties in the domestic political space were noted. An important element of the 2024 election campaign was the growth of loyalty to the authorities among voters in large cities, which were previously the main centers of protest voting. …”
Get full text

Design of an Automatic Defect Identification Method Based ECPT for Pneumatic Pressure Equipment by Bo Zhang, YuHua Cheng, Chun Yin, Xuegang Huang, Sara Dadras, Hadi Malek

“…The data block selection and variable step search are integrated to decrease the redundant computations in the automatic defect identification. …”
Get full text

The modeling and condition analysis of nondestructive testing based on ESPI for internal defects of materials. by Wen Wang, Mingzhi Lv, Fang Zhang, Zhitao Xiao, Wenheng Li

“…We present the effect of loading mode and loading parameters to the defect detection. Firstly, the finite element analysis method is used to establish models to simulate the defect detection of aluminum plates under different loading conditions. …”
Get full text

Wavelet-based stochastic finite element analysis of steel girders by Marcin Kamiński, Michał Jan Guminiak, Anna Knitter-Piątkowska, Olga Kawa

Get full text

Could you teach new tricks to old dogs? An analysis of online communication of political leaders in Spanish regional elections by Sergio Pérez-Castaños, Javier Antón-Merino, Giselle García-Hípola

“…Two regional elections were held in 2022, marking the start of a new electoral phase in Spain. …”
Get full text

The influence of foot defects on static balance in people over 60 years of age by Piotr Jaworski, Krzysztof Krzemiński, Mateusz Maciejczyk, Ryszard Tomasiuk

“…RESULTS: Statistically significant correlations were found between feet defects and selected static balance parameters. Individuals with increased longitudinal foot arches were observed to have a greater length of outcrops and a higher mean velocity. …”
Get full text

Research on Quantitative Evaluation of Defects in Ferromagnetic Materials Based on Electromagnetic Non-Destructive Testing by Xiangyi Hu, Ruijie Xie, Ruotian Wang, Jiapeng Wang, Haichao Cai, Xiaoqiang Wang, Xiang Li, Qingzhu Guan, Jianhua Zhang

“…However, the existing studies exhibit several limitations (e.g., inaccurate quantification, over-reliance on algorithms, and non-intuitive result presentation, among others) in quantitative defect evaluation. To accurately describe the quantitative relationship between ENDT signals and defect dimensional parameters, the electromagnetic model and electromagnetic induction model are introduced in this paper to elucidate the physical mechanism of ENDT, as both models provide a basis for the selection of the constitutive relationship for simulation analysis. …”
Get full text

Effect of Pipe Wall Wear Defects on the Flow Characteristics of Slurry Shield Discharge Pipe by Yingran Fang, Xinggao Li, Xingchun Li, Yidong Guo, Hongzhi Liu

“…In this study, a three-dimensional slurry particle model of pipeline transport was established using the coupled computational fluid dynamics–discrete element method (CFD-DEM) considering the pipe wall wear defect, and the typical pipeline forms of straight pipe and 90° elbow pipe were selected as the research targets. …”
Get full text

Techniques in detect selective leaching in metal components by Maritza Rodríguez Gual, Bruno Lopes Vieira, Rennan Souza da Silva

“… Selective leaching is a corrosion type in, in which certain element in an alloy is preferentially removed from a material, leaving behind a porous or weakened material that can affect its quality and structural integrity. …”
Get full text

Fault Detection Enhancement in Rolling Element Bearings Using the Minimum Entropy Deconvolution by Tomasz BARSZCZ, Nader SAWALHI

“…Minimum Entropy Deconvolution (MED) has been recently introduced to the machine condition mon- itoring field to enhance fault detection in rolling element bearings and gears. MED proved to be an excellent aid to the extraction of these impulses and diagnosing their origin, i.e. the defective component of the bearing. …”
Get full text

Neural network technology for identifying defect sizes in half-plane based on time and positional scanning by A. N. Solov'ev, A. V. Cherpakov, P. V. Vasil’ev, I. A. Parinov, E. V. Kirillova

“…Introduction. The selected research topic urgency is due to the need for a quick assessment of the condition and reliability of materials used in various designs. …”
Get full text

The Effect of SLM Spreader Structures on the Powder Spreading Dynamics Mechanism of Diamond Tools by HUANG Guoqin, ZHANG Jiangtao, ZHU Xiaowei, XU Yangli, SUN Long, DU Yulong, ZHANG Yunhe

“…In this work, theadhesion force was introduced into the particle contactdynamics model, which was based on the Hertz-Mindlinmodel and Johnson-Kendall-Roberts (JKR) theory. Adiscrete element model (DEM) describing the microforceof two kinds of powder particles was established.The DEM of powder spreading process was constructed,and three blades of linear, circular, and parabolic as wellas roller spreader structures were selected. …”
Get full text