Article
Construction & Building Technology
Manas Sarkar, Moumita Maiti, Shilang Xu, Saroj Mandal
Summary: This study investigates the self-healing concepts in cement-based materials by using alkaliphilic spore-forming Bacillus cohnii microbes in bio-concrete. The regaining of structural efficiency is evaluated based on mechanical strength and durability properties. Bio-mineralized calcium carbonate seals a significant number of pores, resulting in a reduction of voids and an improvement in compressive strength. Microbes only degrade nutrients to produce healing agents without affecting the concrete structure. The sealing of cracks with microbes intensifies mechanical strength and validates self-healing.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Polymer Science
Maria Bercea
Summary: This paper presents the viscoelastic properties of new hybrid hydrogels containing PVA, HPC, BSA, and GSH. The hydrogels form a weak network due to partial BSA unfolding in the presence of GSH after heating. By applying freezing/thawing cycles, a stable porous network structure with elastic properties is designed, and the hydrogels exhibit self-healing abilities. The effects of BSA content, deformation, and temperature on the self-healing ability are discussed.
Article
Computer Science, Interdisciplinary Applications
S. Pietruszczak, P. Przecherski
Summary: This paper presents a methodology for describing the mechanical and hydraulic response of fractured geomaterials undergoing self-healing and self-sealing processes, which are particularly important in deep geological repositories for disposal of low and intermediate-level nuclear waste. An enhanced continuum formulation is provided to describe the effects of fracture healing/sealing processes, with numerical examples illustrating both hydraulic and mechanical aspects of the proposed approach.
COMPUTERS AND GEOTECHNICS
(2021)
Article
Nanoscience & Nanotechnology
Kengo Manabe, Emiko Koyama, Yasuo Norikane
Summary: Polymeric coatings with oxygen barrier properties play an important role in extending the shelf life of food products and reducing waste. Traditional technology like metal deposition can decrease oxygen transmission rate, but new nanobrick wall structures struggle with repair performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Automation & Control Systems
Jing Becker, Olga Speck, Timo Goeppert, Thomas Speck, Claas Mueller
Summary: Plants have developed various functional principles for sealing and healing wounds during evolution. A biomimetic materials system with a self-sealing function has been developed based on the self-sealing ability of Delosperma cooperi leaves.
ADVANCED INTELLIGENT SYSTEMS
(2022)
Article
Chemistry, Physical
Kengo Manabe, Yasuo Norikane
Summary: This study demonstrated that polymer multilayer graphene composite coatings exhibit simultaneous antifogging and self-healing properties. The fabricated layer-by-layer coatings exhibited zwitter-wettability and self-healing performances comparable to those of previously reported systems. This study provides a new zwitterwetting strategy that combines self-healing and antifogging properties.
SURFACES AND INTERFACES
(2023)
Article
Engineering, Mechanical
Sairam Pamulaparthi Venkata, Kunpeng Cui, Jingyi Guo, Alan T. Zehnder, Jian Ping Gong, Chung-Yuen Hui
Summary: A three-dimensional finite strain nonlinear viscoelastic model is developed to study the mechanical behavior of a physically cross-linked Polyampholyte (PA) gel. The time dependent behavior of this gel is due to the ionic interactions of oppositely charged monomers. The model connects the strain dependent bond breaking and reforming kinetics in the microscopic regime to the deformation of the gel at the continuum level.
EXTREME MECHANICS LETTERS
(2021)
Article
Mechanics
Marco Amabili, Giovanni Ferrari, Mergen H. Ghayesh, Celia Hameury, Hasna Hena Zamal
Summary: A self-healing beam was fabricated using a microencapsulated healing agent and dispersed multiwalled carbon nanotubes. The beam exhibited viscoelastic properties and nonlinear vibration characteristics, as confirmed by experimental and numerical results.
COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Paper & Wood
Xiaotong Yi, Feng Cheng, Xinjing Wei, Hongbin Li, Jingting Qian, Jinmei He
Summary: A novel hydrogel with self-healing and adhesive properties was successfully designed and synthesized in this study. The hydrogel showed excellent mechanical performance and hemostatic capacity due to the synergistic multiple crosslinked bonds in a covalent polymer network. It has potential applications in hemostasis and wound dressing.
Article
Engineering, Biomedical
Wei Zhong, Rongjian Hu, Shuai Zhou, Jianhua Xu, Kaiyuan Wang, Bowen Yao, Ranhua Xiong, Jiajun Fu
Summary: In this study, a self-adaptive dressing was developed by coating a quaternary ammonium salt-based hydrogel with cellulose sulfate as dynamic layers to solve the problems of cytotoxicity and adhesive deterioration. The dressing exhibited excellent wound sealing and hemostasis performance and achieved optimal disinfection and epithelium regeneration by responding to the changing acidity of the wound environment.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
K. Sharma, L. Montagne, G. P. Kothiyal, F. O. Mear
Summary: The addition of V2O5 affects the sealing properties of glasses, with a decrease in glass transition temperature and an increase in flow temperature. Silicates mainly exist as Q(2) groups, while phosphates exist as Q(0) groups. The use of composite materials prepared by mixing glasses with vanadium diboride VB2 show good sealing effects.
SOLID STATE SCIENCES
(2021)
Article
Polymer Science
Young-Kyu Song, Hyun-Woo Kim, Chan-Moon Chung
Summary: This study successfully developed a dual-capsule self-healing coating using a mixture of soybean oil and olive oil as the healing agent, demonstrating repeatable self-healing ability through scanning electron microscopy and anticorrosion and electrochemical testing.
Article
Chemistry, Multidisciplinary
Param Punj Singh, Raghavan Ranganathan
Summary: Organisms have an evolutionary advantage in forming complex structures with superior mechanical properties, and efforts to mimic these structures for synthesizing high-performance materials have seen rapid growth thanks to advances in microscopy and testing methodologies. In this study, the mechanical and viscoelastic behavior of nacre-like microstructures was investigated using molecular dynamics simulations. It was found that the microstructure and polymer-crystal interactions play a significant role in the mechanical properties and viscoelastic behavior of the material.
Article
Nanoscience & Nanotechnology
Lanxiang Liu, Xiang Li, Gang Dong, Hong Zhang, Yun-Feng Tao, Rui He, Juan Xu, Jinju Ma, Baoshan Tang, Bei Zhou
Summary: In this study, a bioactive shellac-based wound dressing was designed and developed, which exhibited high adhesion energy and reversible binding. A novel compound was added to enhance antibacterial and blood coagulation properties. The dressing showed rapid hemostasis, wound sealing, and promoted wound healing. Molecular dynamics simulations demonstrated the beneficial effects of the shellac molecule on wound healing.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Lanxiang Liu, Xiang Li, Gang Dong, Hong Zhang, Yun-Feng Tao, Rui He, Juan Xu, Jinju Ma, Baoshan Tang, Bei Zhou
Summary: Developing safe and effective wound dressings is a constant goal in biomaterials research. In this study, we have designed and developed a novel shellac-based dressing that exhibits high adhesion energy, pH sensitivity, and promotes wound healing. A new compound has also been synthesized to improve the antibacterial and blood coagulation properties of the dressing.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biology
Iain Hunter, Raz Leib
Summary: Natural movement is related to health, but it is difficult to measure. Existing methods cannot capture the full range of natural movement. Comparing movement across different species helps identify common biomechanical and computational principles. Developing a system to quantify movement in freely moving animals in natural environments and relating it to life quality is crucial. This study proposes a theoretical framework based on movement ability and validates it in Drosophila.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Andy Gardner
Summary: Fisher's geometric model is a useful tool for predicting key properties of Darwinian adaptation, and here it is applied to predict differences between the evolution of altruistic versus nonsocial phenotypes. The results suggest that the effect size maximizing probability of fixation is smaller in the context of altruism and larger in the context of nonsocial phenotypes, leading to lower overall probability of fixation for altruism and higher overall probability of fixation for nonsocial phenotypes.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Thomas F. Pak, Joe Pitt-Francis, Ruth E. Baker
Summary: Cell competition is a process where cells interact in multicellular organisms to determine a winner or loser status, with loser cells being eliminated through programmed cell death. The winner cells then populate the tissue. The outcome of cell competition is context-dependent, as the same cell type can win or lose depending on the competing cell type. This paper proposes a mathematical framework to study the emergence of winner or loser status, highlighting the role of active cell death and identifying the factors that drive cell competition in a cell-based modeling context.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Haruto Tomizuka, Yuuya Tachiki
Summary: Batesian mimicry is a strategy in which palatable prey species resemble unpalatable prey species to avoid predation. The evolution of this mimicry plays a crucial role in protecting the unpalatable species from extinction.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Jason W. Olejarz, Martin A. Nowak
Summary: Gene drive technology shows potential for population control, but its release may have unpredictable consequences. The study suggests that the failure of suppression is a natural outcome, and there are complex dynamics among wild populations.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Hamid Ravaee, Mohammad Hossein Manshaei, Mehran Safayani, Javad Salimi Sartakhti
Summary: Gene expression analysis is valuable for cancer classification and phenotype identification. IP3G, based on Generative Adversarial Networks, enhances gene expression data and discovers phenotypes in an unsupervised manner. By converting gene expression profiles into images and utilizing IP3G, new phenotype profiles can be generated, improving classification accuracy.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Beatrix Rahnsch, Leila Taghizadeh
Summary: This study forecasts the evolution of the COVID-19 pandemic in Germany using a network-based inference method and compares it with other approaches. The results show that the network-inference based approach outperforms other methods in short-to mid-term predictions, even with limited information about the new disease. Furthermore, predictions based on the estimation of the reproduction number in Germany can yield more reliable results with increasing data availability, but still cannot surpass the network-inference based algorithm.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Rongsheng Huang, Qiaojun Situ, Jinzhi Lei
Summary: Maintaining tissue homeostasis requires appropriate regulation of stem cell differentiation. Random inheritance of epigenetic states plays a pivotal role in stem cell differentiation. This computational model provides valuable insights into the intricate mechanism governing stem cell differentiation and cell reprogramming, offering a promising path for enhancing the field of regenerative medicine.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Patrick Vincent N. Lubenia, Eduardo R. Mendoza, Angelyn R. Lao
Summary: This study compares insulin signaling in healthy and type 2 diabetes states using reaction network analysis. The results show similarities and differences between the two conditions, providing insights into the mechanisms of insulin resistance, including the involvement of other complexes, less restrictive interplay between species, and loss of concentration robustness in GLUT4.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Nuverah Mohsin, Heiko Enderling, Renee Brady-Nicholls, Mohammad U. Zahid
Summary: Mathematical modeling is crucial in understanding radiobiology and designing treatment approaches in radiotherapy for cancer. This study compares three tumor volume dynamics models and analyzes the implications of model selection. A new metric, the point of maximum reduction of tumor volume (MRV), is introduced to quantify the impact of radiotherapy. The results emphasize the importance of caution in selecting models of response to radiotherapy due to the artifacts imposed by each model.
JOURNAL OF THEORETICAL BIOLOGY
(2024)
Article
Biology
Armindo Salvador
Summary: Michael Savageau's Biochemical Systems Analysis papers have had a significant impact on Systems Biology, generating core concepts and tools. This article provides a brief summary of these papers and discusses the most relevant developments in Biochemical Systems Theory since their publication.
JOURNAL OF THEORETICAL BIOLOGY
(2024)