Effects of Chlorinated Polypropylene on the Conformation of Polypropylene in Polypropylene/Chlorinated Polypropylene/Polyaniline Composites by Jianjun Chen, Yueyue Jia, Zhiye Zhang, Xinlong Wang, Lin Yang

“…Characterization of the specific regularity in the infrared band variation showed that the conformational orders of the helical sequences in PP exhibited major changes that depended on the CPP content. …”
Get full text

Investigation of Soil-Structure Interaction for Design of Reinforced Concrete Structures under Earthquake Load by Saffet Kılıçer, Korhan Özgan

“…In this way, periods, base shear forces, column axial forces, column bending moments and lateral displacements of the structures were compared for each subsoil model. …”
Get full text

Two-Dimensional Modeling of Thermomechanical Responses of Rectangular GFRP Profiles Exposed to Fire by Lingfeng Zhang, Weiqing Liu, Guoqing Sun, Lu Wang, Lingzhi Li

“…The overestimation of deflections could be attributed to the underestimation of bending stiffness. This model can also be extended to simulate the thermomechanical responses of beams and columns subjected to multiside fire loading, which may occur in real fire scenarios.…”
Get full text

Case Study: Correlations Between Curve Squeal, Weather Conditions, and Traction in a Tram Loop by Martin Valena, Milan Omasta, Milan Klapka, Radovan Galas, Vaclav Navratil, Ivan Krupka, Martin Hartl

“…The findings reveal a notable correlation between the CoT and the duration of squeal noise, while the association with sound pressure levels was less pronounced. …”
Get full text

Synthesis and Properties of Bionanocomposites of Polyhydroxybutyrate-Polylactic Acid Doped with Copper and Silver Nanoparticles by Galo Cárdenas-Triviño, Nelson Linares-Bermúdez, Mario Núñez-Decap

“…Theoretically, results obtained were coherent; FTIR spectra showed a characteristic band (around 1740 cm-1) corresponding to the carbonyl bond at different intensities for each blend which is an evidence of the polymers. …”
Get full text

Investigation into the stability of chemical doping and the structure of carbon nanotube by Daichi Suzuki, Nao Terasaki, Yoshiyuki Nonoguchi

“…This is because CNTs with small diameters have a wide bandgap and a high energy level of the conduction band, and chemical dopants with a stronger electron-donating ability are required to obtain stable n-type CNTs. …”
Get full text

The effect of surface hydroxyl groups on the adsorption properties of nanocrystalline TiO2 films by Angela Šurca Vuk, Robi Ješe, Boris Orel, Goran Dražc

“…IR measurements also revealed that TiO2 films with surfactants have a higher photocatalytic effect which was tested for stearic acid by following the integral intensity of C-H and C=O IR bands.…”
Get full text

Forced Vibration of a Timoshenko Beam Subjected to Stationary and Moving Loads Using the Modal Analysis Method by Taehyun Kim, Ilwook Park, Usik Lee

“…In order to use the MAM, accurate information is needed on the natural frequencies, mode shapes, and orthogonality of the mode shapes a priori. …”
Get full text

Active Mode Remote Infrared Spectroscopy Detection of TNT and PETN on Aluminum Substrates by John R. Castro-Suarez, Leonardo C. Pacheco-Londoño, Joaquín Aparicio-Bolaño, Samuel P. Hernández-Rivera

“…The effect of the angle of incidence/collection of the IR beams on the vibrational band intensities and the signal-to-noise ratios (S/N) were investigated. …”
Get full text

DESIGN ANALYSIS OF A LOW-COST PARABOLIC ANTENNA FOR DEVELOPING NATION by FRANK ONAIFO, ALEXANDER AKPOFURE OKANDEJI, FISAYO IDOWU, OMOWUMMI GRACE OLASUNKANMI, OLAWALE OLALUWOYE, OLAOLU FOLORUNSHO

“…The Parabolic antenna is designed to receive microwave signals in the K-band with the down converter converting it to very high frequency (VHF) and ultra-high frequency (UHF) employing the super-heterodyning principle. …”
Get full text

On Local Stability Loss of Modified Composites with Whiskerized Fibers by G. I. Kriven, D. S. Shavelkin

“…This article examines the critical compressive stresses required for a modified fiber composite to remain straight while the fibers within it bend. It was assumed that the modified composite consists of three phases: fiber, whiskerized interfacial layer, and matrix. …”
Get full text

Design of Interference-Resilient Medium Access for High Throughput WLANs by Luca Reggiani, Andrea Gola, Gian Mario Maggio, Gianluigi Tiberi

“…The proliferation of wireless communications systems poses new challenges in terms of coexistence between heterogeneous devices operating within the same frequency bands. In fact, in case of high-density concentration of wireless devices, like indoor environments, the network performance is typically limited by the mutual interference among the devices themselves, such as for wireless local area networks (WLANs). …”
Get full text

Radar system for unmanned aerial vehicles by Vladislav R. Skrynskij

“…The structural-functional scheme of the X-band side-scan radar system consisting of an antenna, a receiving and transmitting unit, a container with a digital core and a micronavigation system is described. …”
Get full text

Research on Image Recognition of Building Wall Design Defects Based on Partial Differential Equation by Xiwen Yu, Kai Wang, Shaoxuan Wang

“…The second-order partial differential diffusion equation and the fourth-order partial differential equation are used to recognize the high-frequency and low-frequency bands of the image, respectively. The kernel principal component analysis algorithm is used to transfer the overall image input space to the high-dimensional feature space. …”
Get full text

新型机加工弹簧静压状态下的应力集中研究 by 王立超, 周燕飞

“…The stress concentration at the end of spiral groove is very serious during the static tension and compression of the new machined spring,which has a great influence on the strength and fatigue life of the spring.The influence of spring basic parameters on the stress concentration coefficient was analyzed by ANSYS software,and the theoretical criterion for the existence of stress concentration in machined springs is determined.The effects of tangential stress release hole on compression deformation and stress concentration coefficient were investigated; Based on the strength theory and bending theory of curved beam,the formula of maximum equivalent stress without stress concentration was deduced.The results show that when the ratio of the width of the spiral groove to the pitch is less than 0.5,stress concentration occurs in machined springs with the middle diameter between 15 mm ～ 35 mm.The stress concentration can be basically eliminated by cutting stress release hole at the end of spiral groove and controlling its size to be close to the height of rectangular section.The error between the equivalent stress value of the inner ring and the simulation value is less than 3%.It provides an important reference for the subsequent engineering design and application of the new spring.…”
Get full text

On the Nature of Interplay among Major Flexibility Channels in Molecular Rotors by M. S. A. Abdel-Mottaleb

“…In agreement with the experimental results, the findings conclude the existence of a flexible geometry-dependent single emission band. …”
Get full text

Mechanical testing of miniature carbon fiber reinforced polymer (CFRP) samples under digital light microscopy by E. S. Statnik, Iu. A. Sadykova, E. N. Prokopev, A.I. Salimon, E. V. Nazarov, N. V. Turbin, A.M. Korsunsky

“…Mechanical testing machines must be specifically designed and optimized for each scale, combined with microscopy to observe the response under tension, bending, and compression. This setup enables real-time imaging of defect and crack initiation. …”
Get full text

Investigation by Raman Spectroscopy of the Decomposition Process of HKUST-1 upon Exposure to Air by Michela Todaro, Antonino Alessi, Luisa Sciortino, Simonpietro Agnello, Marco Cannas, Franco Mario Gelardi, Gianpiero Buscarino

“…In agreement with that model, the reported Raman measurements indicate that for exposure times longer than 20 days relevant irreversible processes take place, which are related to the occurrence of the hydrolysis of Cu-O bonds. These processes induce small but detectable variations of the peak positions and intensities of the main Raman bands of the material, which can be related to Cu-Cu, Cu-O, and O-C-O stretching modes. …”
Get full text

Initial orientation of the fretting fatigue cracks in shrink-fit connection specimens by Ciro Santus

“…The bending configuration of shrink-fitted connection fretting fatigue tests causes a fluctuation in the contact pressure and in turn a more favourable condition for shear, rather than tensile, crack initiation. …”
Get full text

Assessment of Ruthenium Dye N719 Adsorption Kinetics in Mesoporous TiO2 Films of Dye-Sensitized Solar Cells via Nanoplasmonic Sensing by Fahd M. Rajab

“…The role of dye is to absorb light and convert it to photoelectrons, which are injected into the semiconductor conduction band as device current. We measured dye N719 adsorption via optical techniques including indirect nanoplasmonic sensing. …”
Get full text