CLASSIFICATION BY TYPES OF DEFECT «PRODIR» ON AN INTERNAL SURFACE OF HOT-ROLLED PIPES by N. A. Glazunova, O. V. Rozhkova, I. A. Kovalyova

“…Classification of guide scratches according to the types of defect which allows to define and eliminate in proper time the reasons of the guide scratches formation is offered, consequently the decrease in quantity of inappropriate production by this defect on internal surface of pipes is observed…”
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Human Activities Increase the Nitrogen in Surface Water on the Eastern Loess Plateau by Yuxian Hu, Ke Zhang, Yuan Li, Yanan Sun, Hongyan Li, Gaiqiang Yang

“…Facing the water crisis of nitrogen pollution, the state of surface water in arid areas needs close attention. …”
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Global Pollution of Surface Waters from Point and Nonpoint Sources of Nitrogen by G. van Drecht, A.F. Bouwman, J.M. Knoop, C. Meinardi, A. Beusen

“…The results provide a first insight into the magnitude of the N losses from soil-plant systems and point sources in various parts of the world, and the fate of N during transport in atmosphere, groundwater, and surface water. The contribution to the river N load by anthropogenic N pollution is dominant in many river basins in Europe, Asia, and North Africa. …”
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Compressive Strength of Recycled Green Concrete Affected by Chloride and Sulfate Exposures by Md Roknuzzaman, Md Rahman

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Sulfate-Reducing Bacteria: Biofilm Formation and Corrosive Activity in Endodontic Files by Fabiano Luiz Heggendorn, Aline Guerra Manssour Fraga, Dennis de Carvalho Ferreira, Lucio Souza Gonçalves, Viviane de Oliveira Freitas Lione, Márcia Teresa Soares Lutterbach

“…This study describes the biofilm formation and the corrosive capacity of sulfate-reducing bacteria (SRB) on the metallic structure of used endodontic files. …”
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On the Gauss Map of Surfaces of Revolution with Nonlightlike Axis in Minkowski 3-Space by Minghao Jin, Donghe Pei

“…We study surfaces of revolution with a nonlightlike axis in 3-dimensional Minkowski space and classify such surfaces in terms of the Gauss map G that satisfies the condition ΔhG=ΛG, with Λ being a 3×3 real matrix. …”
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Laser Stripe Extraction for 3D Reconstruction of Complex Internal Surfaces by Xiaowei Zhao, Daguo Yu, Hongyan Shi

“…However, automatically extracting laser stripes from complex surfaces is a challenging task. In this work, we have improved upon the Steger method and introduced a new laser stripe identification technique called the Breakdown Discharging Method. …”
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Preface on Hot Topics in Surface Science: Organic Coatings (HTSS-OC) by Ayse Asatekin, Louis C.P.M. de Smet

“…Applied Surface Science Advances…”
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Study on the pelletizing of sulfate residue with magnetite concentrate in grate-kiln system by Shufeng Y., Jingshe L., Yan-Qi S.

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Activation of diffusion during the formation of boride layers on the surface of steel parts by S. M. Usherenko, V. G. Dashkevich, Yu. S. Usherenko

“…The features of structure formation of diffusion layers obtained by the technology, including preliminary surface treatment of steel products and subsequent thermal diffusion boriding in powder media, have been investigated. …”
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Hypoplastic Interface Model considering Plane Strain Condition and Surface Roughness by Yong-Gwang Jong, Yang Liu, Zixuan Chen, Pieride Mabe Fogang

“…The results indicate that the improved model can be utilized to reflect the nonlinearity of the mechanical properties of the contact surface, which is in good agreement with the experimental data.…”
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Exploring coupling effects of rainfall and surface roughness on the sheet flow velocity by Enshuai Shen, Gang Liu, Qiong Zhang, Chenxi Dan, Chang Liu, Hairu Li, Ya Liu, Xueming Qu, Xiaolin Xia, Dandan Liu, Zhen Guo, Xining Zhao

“…Raindrop impact and underlying surface conditions can affect the SF velocity by changing the velocity profile. …”
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A Prototype of a remotely controlled multichannel surface muscle stimulator by P. Silverio-Cevallos, J., D. A. Molina-Vidal, C. J. Tierra-Criollo, P. Cevallos-Larrea

“…This study presents the design and evaluation of a four-channel, remotely controlled surface electrical muscle stimulator prototype. The prototype introduces a modern alternative for the control block, employing a Wi-Fi-enabled solution based on the ESP32 microcontroller. …”
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Structure of small HBV surface antigen reveals mechanism of dimer formation by Xiao He, Yunlu Kang, Weiyu Tao, Jiaxuan Xu, Xiaoyu Liu, Lei Chen

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Influence of Tooth Surface Geometry on Bending Fatigue Life of Face Gear by Yan Hongzhi, Wen Guangxu, Li Chao, Zhou Tengfei

“…Based on the coordinate transformation and meshing theory,the tooth surface equation of face gear is deduced.The finite element model of the different parameters（pressure angle,modulus）of face gear transmission is built,the influence of tooth face parameters on tooth root bending stresses,contact area and the distribution rule of bending stresses along the direction of tooth height and width are analyzed.Based on modified local stress-strain method,the fatigue crack initiation life in different roughness of grinding and milling tooth face is calculated.And the fatigue crack propagation life is predicted with damage tolerant design method.The results prove that the pressure angle has a great influence on the tooth face bending fatigue life,especially for the crack initiation life.A larger pressure angle is helpful to improve the tooth face bending fatigue comprehensive life.In addition,grinding method is more conducive to improve the tooth face bending fatigue life than milling method.This study provides a basis for the anti-fatigue design of face gear.…”
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Variational analysis for simulating free-surface flows in a porous medium by Shabbir Ahmed, Charles Collins

“…A variational formulation has been developed to solve a parabolic partial differential equation describing free-surface flows in a porous medium. The variational finite element method is used to obtain a discrete form of equations for a two-dimensional domain. …”
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Dynamic Behaviors and Energy Transition Mechanism of Droplets Impacting on Hydrophobic Surfaces by Qiaogao Huang, Ya Zhang, Guang Pan

“…The wettability of hydrophobic surfaces and the dynamic behaviors of droplets impacting on hydrophobic surfaces are simulated using a lattice Boltzmann method, and the condition for the rebound phenomenon of droplets impacting on solid surfaces is analyzed. …”
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Hydrogeochemistry of Surface and Ground Water in Alatening Village, Northwest Region, Cameroon by Kahnji Iren Njoyim, Lucas Kengni, Margaret Awah Tita, Estella Njoyim Buleng Tamungang, Vitalis Fonfo Fonzenyuy, Bertrand Tatoh Aziwo

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Assessment of Surface Roughness of Non-Metallic Materials during Laser Processing by V. A. Alekseev, A. V. Usoltseva, V. P. Usoltsev, S. I. Yuran

Subjects: “…surface quality…”
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Effect of Intelligent Reflecting Surface on WSN Communication With Access Points Configuration by Mahmoud Z. Iskandarani

“…As signal quality and communication channel reliability is critical for wireless communication, and to overcome some of the negative effects affecting the transmitted signals and data, due to environment and line-of-sight problems, and to enable internet based, on-line, and IoT applications, the use of Intelligent Reflecting Surface devices (IRS) become critical. Thus, this work objective is to simulate, model, and analyze parameters that are critical to the quality of transmitted signal over a wireless network and a WSN sensor nodes arrangement. …”
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