Article
Chemistry, Multidisciplinary
Vignesh Jayarajan, Jensen O. Auguste, Kenilson A. Gene, Libny Auguste, Camilo Nunez, Bartlomiej Marcinowski, Suwan N. Jayasinghe
Summary: Organotypic 3D tissue models have greatly contributed to understanding molecular and cellular characteristics in functional or diseased tissue. This article demonstrates the potential of bio-electrospray in reconstructing skin-like structures and organotypic human skin tissues.
Article
Engineering, Electrical & Electronic
Tushar Singh, Branislav M. Ninkovic, Miodrag S. Tasic, Marija Nikolic Stevanovic, Branko M. Kolundzija
Summary: Medical microwave imaging (MMWI) is a complex task that requires precise electromagnetic modeling, solving non-linear and ill-posed inverse scattering problems, and designing compact antenna arrays. This article focuses on achieving high accuracy in electromagnetic simulations of MMWI scenarios. The authors propose a technique to generate high-quality mesh with controllable deviation and develop self-convergence tests and an additional validity test to ensure reliable simulation results.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Environmental Sciences
Tarandeep S. Kalra, Neil K. Ganju, Alfredo L. Aretxabaleta, Joel A. Carr, Zafer Defne, Julia M. Moriarty
Summary: Salt marshes are dynamic biogeomorphic systems that respond to external physical factors and internal processes. This study implemented new marsh dynamic processes in the COAWST model and verified them through idealized domains. Simulations showed that vertical accretion in marshes is dominated by organic deposition, while mineral estuarine sediments primarily deposit along the channel edges. The model's ability to predict sediment fate can be extended to simulate the impacts of future storms and sea-level rise scenarios on salt marsh ecomorphodynamics.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Materials Science, Biomaterials
Yang Wang, Yuhua Huang, Ruolin Du, Shuang Ge, Yanhong Li, Guixue Wang, Yazhou Wang, Tieying Yin
Summary: This study investigated the degradation process of bioresorbable scaffolds (BRSs) in different arterial components and found that muscular arteries are more sensitive to scaffold degradation-induced mechanical changes compared to elastic arteries. The carotid artery of rabbits is suitable for evaluating drug coatings on BRSs, while the rat abdominal aorta is more suitable for assessing BRS degradation and safety. It is important to consider the histological characteristics of vasculature when choosing an animal model for BRS evaluation.
BIOMATERIALS SCIENCE
(2022)
Article
Multidisciplinary Sciences
Izzettin Alhalil, M. Fethi Gullu
Summary: The study aims to assess the non-linear behavior of RC structural systems with irregular configurations of URM infill walls. The simplified equivalent diagonal strut approach is used to simulate the infill walls. The derived simplified strut backbone curve accurately captures the strength and stiffness parameters of URM walls. The study concludes that irregular distribution of infill walls can result in severe torsional effects and stiffness irregularities, leading to significant damage or collapse in a building.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Chen Jiao, Deqiao Xie, Zhijing He, Huixin Liang, Lida Shen, Youwen Yang, Zongjun Tian, Guofeng Wu, Changjiang Wang
Summary: This study investigates the effects of structural parameters and material on the mechanical properties and biocompatibility of bone scaffolds. Through bio-inspired design and ceramic digital light processing technique, porous scaffolds with varying irregularity and porosity were fabricated. The results showed that the scaffolds had comparable mechanical properties to cancellous bone and exhibited good biocompatibility, promoting cell proliferation and differentiation. These findings suggest that bio-inspired bone scaffolds with excellent comprehensive properties can be obtained through reasonable design.
MATERIALS & DESIGN
(2022)
Article
Engineering, Environmental
Alice Schmitt, Cyril Chevarin, Julie Mendret, Stephan Brosillon, Denis Bouyer
Summary: Ozonation processes using membrane contactors show promise for removing organic micropollutants, with good control of the transferred ozone. A 3-D model was developed to study ozone transfer in water through single and multi-fiber membrane contactors, and can be used to optimize bubbleless processes and scale up membrane contactor processes for ozonation applications. Hydrodynamics was found to be a crucial factor for ensuring good ozone distribution and pollutant treatment. The transferred ozone does not increase proportionally with increasing membrane length or residence time, necessitating a careful balance between contactor length and fibers number.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Guan Yang, Chao Li, Shiyou Wu, Xiaojun Liu, Guangyou Fang
Summary: MIMO-SAR technology enables three-dimensional imaging in millimeter wave and terahertz band, and the proposed PSM algorithm achieves efficient image reconstruction in the wavenumber domain. Experimental results demonstrate high reconstruction accuracy of the algorithm.
IEEE SENSORS JOURNAL
(2021)
Article
Environmental Sciences
Bo Lin, Yubing Yuan, Yicai Ji, Chao Li, Xiaojun Liu, Guangyou Fang
Summary: This article proposes a novel three-dimensional (3-D) imaging method based on the range decomposing algorithm (RDA) for millimeter wave imaging. The theoretical formulation of RDA applied to single-input-single-output (SISO)/multiple-input-multiple-output (MIMO) array is derived, and its computational complexity and computational error are analyzed. Compared to classical Fourier algorithms, the proposed algorithm offers a more efficient approach by replacing time-consuming operations with approximations and transformations, while maintaining image quality. Additionally, a method based on RDA is proposed to enhance the processing efficiency for the transformation between MIMO and SISO. Proof-of-principle simulation and experimental results demonstrate the higher efficiency and better reconstruction performance of the proposed algorithm.
Article
Engineering, Mechanical
Dingrou Yao, Ze Zhao, Yuan Wei, Junchao Li
Summary: In this study, a parameterized method based on selective laser sintering (SLS) and the Primitive triply periodic minimal surfaces (TMPS) was proposed for developing scaffolds with customized compression modulus distribution. The mechanical properties, energy absorption characteristics, and permeability of the designed Primitive porous scaffolds were analyzed using compression experiments and computational fluid dynamics. The results demonstrate that the proposed method enables the effective fabrication of gradient porous scaffolds with expected mechanical performance, and the gradient scaffolds have both agreeable mechanical properties and permeability. Cell tests show that the irregular structures of the gradient scaffolds promote cell adhesion and migration, favoring the growth of bone tissue. These findings provide guidelines for developing customized gradient scaffolds and promote the application of energy-absorbing or cell proliferation structures in engineering.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Computer Science, Information Systems
Baozhong Li, Yanming Liu, Lei Lai
Summary: This paper proposes a bio-inspired neural compass model with 3 DOFs based on the neurophysiological characteristics of head direction cells in mammals' brains, which determines spatial orientations of unmanned vehicles in 3-D environments using angular velocity of head turning. By incorporating external perception information and calibrating cumulative errors of path integration, the model effectively tracks spatial orientations in 3-D environments.
Article
Engineering, Environmental
C. Masciopinto, Y. Fadakar Alghalandis
Summary: This study introduces a method for predicting microbial transport in fractured carbonate rock using enhanced solutions. The proposed models are able to rapidly predict breakthrough curves and plumes of pathogens in three-dimensional fracture networks, with application in arid regions where managed aquifer recharge facilities are significant for sustaining basic human needs. The results provide valuable insights for the safe operation and water quality protection of these facilities.
Article
Geochemistry & Geophysics
Xulong Wang, Jianxin Liu, Jian Li
Summary: In order to address the problem of efficient and accurate 3-D modeling of magnetic anomaly, a fast numerical modeling method based on integral equation is developed. It achieves high accuracy and reduces computation time and memory requirement by using a new analytical expression for prismatic magnetic anomaly and taking advantage of the Toeplitz property of the kernel matrix. The applicability of the algorithm is demonstrated by studying the terrain effect on airborne magnetic data in a real complex topography model.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2023)
Article
Engineering, Biomedical
David P. Forrestal, Mark C. Allenby, Benjamin Simpson, Travis J. Klein, Maria A. Woodruff
Summary: This study presents a multiscale framework combining computational fluid dynamics, additive manufacturing, and a perfusion bioreactor system for engineering personalized volumetric tissue. By designing microscale 3D printed scaffold pore geometries and customizing perfusion bioreactors, tissue growth shaped like human calcaneus bones was achieved.
ADVANCED HEALTHCARE MATERIALS
(2022)
Article
Computer Science, Information Systems
Eugenio Fazio, Sidra Batool, Mehwish Nisar, Massimo Alonzo, Fabrizio Frezza
Summary: In this paper, a simple technique using polarization-resolved imaging is developed to identify material texture from far. This technique can be easily implemented into industrial environments where fast and cheap sensors are required. By studying the radiance of the samples illuminated by linearly polarized light, different behaviors for both isotropic and anisotropic samples are identified, allowing resolution of fiber orientation.
