Thermo-Mechanical Properties Evaluation of Fiber-Reinforced Rubberized Concrete Mixes for Airfield Pavements by Zainab Abd Elshafy, Mohamed Mohamed, Ghada Moussa, Mahmoud Enieb, Elsayed Abdallah

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Boundary Effect and Dynamic Response Study for the Penetration of Rigid Projectiles into Thick, Finite-Radius, Metallic Targets by Juan Wang, Junhai Zhao, Yuan Zhou, Shanshan Sun

“…In this investigation, analytical solutions of the radial stress in the cavity wall are obtained, and a unified penetration model of the target material is built. On this basis, penetration resistance formulas and penetration depth formulas for rigid projectiles with various nose shapes penetrating into thick, finite-radius, metallic targets are deduced, the solutions of which are obtained by utilizing the Simpson method. …”
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A comparison of stick and slip contact conditions for a coated sphere compressed by a rigid flat by Shai Ronen, Roman Goltsberg, Izhak Etsion

“…Abstract A finite element analysis is used to study the elastic-plastic contact of a coated sphere compressed by a rigid flat under the stick contact condition. This was done for a wide range of hard coating material properties and coating thicknesses. …”
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Study on Parameter Optimization and Mechanism of Rigid-Flexible Coupling Underground Engineering Structure of Steel Panel and Polymer by Dengping Hu, Chunyan Wang, Zhe Luo, Xuanxuan Chu

“…Polymer grouting is carried out between the steel panel and surrounding soil in underground engineering, and the polymer material consists of isocyanates and polyols. The isocyanate/polyol composite slurry expands rapidly due to chemical reaction and solidifies immediately. …”
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A Review of the Carcinogenic Potential of Thick Rigid and Thin Flexible Multi-Walled Carbon Nanotubes in the Lung by Omnia Hosny Mohamed Ahmed, Aya Naiki-Ito, Satoru Takahashi, William T. Alexander, David B. Alexander, Hiroyuki Tsuda

“…Intraperitoneal and intrascrotal injection studies identified rigid MWCNTs as hazardous materials. The assessment of lung toxicity of MWCNTs in short and medium term instillation and inhalation studies were not conclusive; therefore, these studies do not confirm the hazard of MWCNTs. …”
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Sub-bandage pressure changes in canine hindlimbs after re-application of custom rigid fiberglass splints by Brandon Thibodaux, Kendra Eginton, Wanda Gordon-Evans

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Influence of self-curing method on the performance of aeolian sand semi-rigid base using SAP and evaporation retardant by Yicheng Zhu, Wei Li, Rong Li, Can Guo, Ke Wang, Jiamiao Guo, Rui He, Jiangjiang She

“…To address these challenges, this paper used aeolian sand as road base layer material, and developed a self-curing method for aeolian sand semi-rigid base layer by incorporating superabsorbent polymer (SAP) and evaporation retardant (ER). …”
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Rigid polyurethane foam with improved thermal stability and flame retardancy modified by barium phytate and zinc oxide by Xu Zhang, Xiaoxiang Qu, Qihong Guan, Renzhou Li, Zhi Wang, Hua Xie

“…Rigid polyurethane foam (RPUF) has been widely used in fields such as construction, furniture, aerospace and so on due to its outstanding properties. …”
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Structural safety assessment procedure of plastic single-span greenhouses considering semi-rigid clamp joints by Byung-Hun Seo, Sangik Lee, Do-Kyung Kim, Jong-Hyuk Lee, Dong-Su Kim, Dong-Woo Kim, Yerim Jo, Won Choi

“…These results emphasize the necessity of considering semi-rigid joint behavior in greenhouse design to ensure structural safety under extreme weather conditions. …”
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Rigid‐Flexible Coupling Realized by Synergistic Engineering of the Graphitic‐Amorphous Architecture for Durable and Fast Potassium Storage by Mingchi Jiang, Ning Sun, Bin Cao, Xuyang Jian, Razium Ali Soomro, Bin Xu

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Dye adsorption and degradation properties of Cu(Ⅱ)-MOFs constructed by rigid pyridine carboxylic acid ligands by WU Yunlong, TANG Pengfei, FAN Jiang, YAN Yangtian

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Quasi-zero rigidity condition for static force characteristic of parallelogram mechanism for seat vibration protection system by M. S. Korytov, I. E. Kashapova, V. S. Shcherbakov

“…It is promising to use the effect of quasi-zero rigidity, which makes it possible to effectively damp low-frequency oscillations. …”
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Assessment of endothelial function and arterial rigidity in patients with type 1 diabetes at different stages of diabetic nephropathy by Evgenia Pavlovna Kosobyan, Ivona Renata Yarek-Martynova, Alexander Sergeevich Parfenov, Lyubov' Leonidovna Bolotskaya, Marina Vladimirovna Shestakova

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Modeling the Relationship of Concrete Strength with Aggregate Size Using Quarry Dust as Fine Aggregates for Rigid Pavements. by Ahebwa, Chrispus

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Morphological studies of the cadaveric sclera after nonpenetrating sclerotomy by ND: YAG laser by A. E. Sineok, A. V. Zolotarev, G. A. Nikolaeva

“…Purpose: to reveal the changes of the morphological structure of cadaveric human sclera after Nd: YAG laser irradiation.Material and methods. Laser pulses (Nd: YAG) (Lumenis) (power 7.0–7.4 mW, pulse duration 4 ns, wavelength 1064 nm) were applied to the sclera of an isolated eyeball at a distance of 4 to 8 mm from the limbus. …”
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A 6DOF super element for nonlinear analysis of composite frames with partial interaction and semi-rigid connections by Le Luong Bao Nghi, Bui Cong Thanh

“…A 6DOF super element is proposed for modeling composite beam, allowing for partial interaction between the steel beam and the concrete slab, semi-rigid nature of beam to column composite connection and material nonlinearity. …”
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A Dynamic Cavity Expansion Model for Rigid Projectile Penetration into Concrete considering the Compressibility and Nonlinear Constitutive Relations by Fei Gao, Zhen Wang, Zhu Wen, Yuguo Ji

“…A dynamic cavity expansion model considering the compressibility and nonlinear constitutive relations for concrete material is developed. Then, a theoretical model to calculate the depth of penetration (DOP) for rigid projectile is established. …”
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More on the Development of Rigidity Evaluation Techniques of Freight Car Structures and Their Components in the Design and on Trials. Adjustment of Design Loads by V. S. Plotkin, A. M. Krasnobaev, T. Ye. Kon’Kova, Krasnobaev

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Sustainable Synthesis of CO2‐Based Polyols via Pentaerythritol Derivatives for High‐Performance Rigid Polyurethane Foams by Su Min Jung, Jiyoung Chae, Jiwon Hwang, Harin Kim, Nam‐Kyun Kim, Joon Hyun Baik

“…ABSTRACT CO2‐based polyols represent a significant advancement in carbon capture and utilization technologies, offering an innovative solution to mitigate greenhouse gas emissions while producing value‐added polymeric materials. This study investigates their synthesis using double metal cyanide (DMC) catalysts and their application in rigid polyurethane foams (RPUFs). …”
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INFLUENCE OF COMBINATION ANTIHYPERTENSION THERAPY ON THE PARAMETERS OF VESSEL WALL RIGIDITY IN NON-CONTROLLED ARTERIAL HYPERTENSION PATIENTS WITH DEPRESSION by V. V. Skibitsky, A. V. Skibitsky, A. V. Fendrikova

“…Assessment of combination of antihypertension therapy (CAT) including antidepressant, on the main parameters of ambulatory blood pressure monitoring (ABPM), vascular wall rigidity parameters and central aortic pressure in patients with non-controlled arterial hypertension (NCAH) and depression disorders (DD).Material and methods. …”
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