Articles de revues : « Bio-based systems »

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Izabel, David, Thibault Renaux, Tommy Gelders, Arritokieta Eizaguirre‐Iribar, Jörg Lange, Eric Man Pradhan, Helena Gervásio et al. « Innovative bio‐based steel envelope systems ». ce/papers 6, n^o 3-4 (septembre 2023) : 501–8. http://dx.doi.org/10.1002/cepa.2630.

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AbstractThe INCSEB project is aimed at developing 5 ultra‐low carbon envelope systems made in steel and that incorporate innovative use of wood fiber insulation. The systems under development are: 3 sandwich panels (cladding, pitch & flat roofing), 2 claddings (double skin & façade with plank). INCSEB includes tests to study various behaviors: mechanical, fire, thermal calculation, acoustic insulation, air/water/vapor permeability. Interpretation and classification reports will be done for each type of test. 2 full scale prototypes will allow to estimate the durability in real life conditions. LCA indicators and comparison of carbon footprint (GWP) to conventional systems based on a real office building will be provided. An economic study of the projected price of the 5 systems compared to existing conventional systems is also planned. Besides, as far as the production of innovative panels is concerned, it appears that they can be integrated in current production lines. Finally, actions to facilitate the dissemination of results and industrial application will be organized: drafts of design and installation guides, publications, submission of 3 amendments to relevant EN standardization committees, workshop, BIM objects. Lastly, the manufacturers plan to apply for patents protection.

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Mandić, Vilko, Arijeta Bafti, Ivana Panžić et Floren Radovanović-Perić. « Bio-Based Aerogels in Energy Storage Systems ». Gels 10, n^o 7 (30 juin 2024) : 438. http://dx.doi.org/10.3390/gels10070438.

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Bio-aerogels have emerged as promising materials for energy storage, providing a sustainable alternative to conventional aerogels. This review addresses their syntheses, properties, and characterization challenges for use in energy storage devices such as rechargeable batteries, supercapacitors, and fuel cells. Derived from renewable sources (such as cellulose, lignin, and chitosan), bio-based aerogels exhibit mesoporosity, high specific surface area, biocompatibility, and biodegradability, making them advantageous for environmental sustainability. Bio-based aerogels serve as electrodes and separators in energy storage systems, offering desirable properties such as high specific surface area, porosity, and good electrical conductivity, enhancing the energy density, power density, and cycle life of devices. Recent advancements highlight their potential as anode materials for lithium-ion batteries, replacing non-renewable carbon materials. Studies have shown excellent cycling stability and rate performance for bio-aerogels in supercapacitors and fuel cells. The yield properties of these materials, primarily porosity and transport phenomena, demand advanced characterization methods, and their synthesis and processing methods significantly influence their production, e.g., sol–gel and advanced drying. Bio-aerogels represent a sustainable solution for advancing energy storage technologies, despite challenges such as scalability, standardization, and cost-effectiveness. Future research aims to improve synthesis methods and explore novel applications. Bio-aerogels, in general, provide a healthier path to technological progress.

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Speck, Thomas, Falk Tauber, Olga Speck et Frank D. Scherag. « Bioinspired and bio-based living materials systems ». Bioinspiration & ; Biomimetics 20, n^o 1 (29 novembre 2024) : 010202. http://dx.doi.org/10.1088/1748-3190/ad9370.

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Vafaei, Seyedmohammad, Max Jopen, Georg Jacobs, Florian König et Ralf Weberskirch. « Synthesis and tribological behavior of bio-based lubrication greases with bio-based polyester thickener systems ». Journal of Cleaner Production 364 (septembre 2022) : 132659. http://dx.doi.org/10.1016/j.jclepro.2022.132659.

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Nicolaidis Lindqvist, Andreas, Sarah Broberg, Linda Tufvesson, Sammar Khalil et Thomas Prade. « Bio-Based Production Systems : Why Environmental Assessment Needs to Include Supporting Systems ». Sustainability 11, n^o 17 (28 août 2019) : 4678. http://dx.doi.org/10.3390/su11174678.

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The transition to a bio-based economy is expected to deliver substantial environmental and economic benefits. However, bio-based production systems still come with significant environmental challenges, and there is a need for assessment methods that are adapted for the specific characteristics of these systems. In this review, we investigated how the environmental aspects of bio-based production systems differ from those of non-renewable systems, what requirements these differences impose when assessing their sustainability, and to what extent mainstream assessment methods fulfil these requirements. One unique characteristic of bio-based production is the need to maintain the regenerative capacity of the system. The necessary conditions for maintaining regenerative capacity are often provided through direct or indirect interactions between the production system and surrounding “supporting” systems. Thus, in the environmental assessment, impact categories affected in both the primary production system and the supporting systems need to be included, and impact models tailored to the specific context of the study should be used. Development in this direction requires efforts to broaden the system boundaries of conventional environmental assessments, to increase the level of spatial and temporal differentiation, and to improve our understanding of how local uniqueness and temporal dynamics affect the performance of the investigated system.

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Üzek, Recep, Esma Sari et Arben Merkoçi. « Optical-Based (Bio) Sensing Systems Using Magnetic Nanoparticles ». Magnetochemistry 5, n^o 4 (25 octobre 2019) : 59. http://dx.doi.org/10.3390/magnetochemistry5040059.

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In recent years, various reports related to sensing application research have suggested that combining the synergistic impacts of optical, electrical or magnetic properties in a single technique can lead to a new multitasking platform. Owing to their unique features of the magnetic moment, biocompatibility, ease of surface modification, chemical stability, high surface area, high mass transference, magnetic nanoparticles have found a wide range of applications in various fields, especially in sensing systems. The present review is comprehensive information about magnetic nanoparticles utilized in the optical sensing platform, broadly categorized into four types: surface plasmon resonance (SPR), surface-enhanced Raman spectroscopy (SERS), fluorescence spectroscopy and near-infrared spectroscopy and imaging (NIRS) that are commonly used in various (bio) analytical applications. The review also includes some conclusions on the state of the art in this field and future aspects.

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Papadopoulou, Electra, Dimitrios Moutousidis, Sotirios Kountouras, Aikaterini Argyropoulou, Panagiotis Stathopoulos, Alexios Leandros Skaltsounis, Rafail O. Ioannidis, Eleftheria Xanthopoulou, Lamprini Malletzidou et Konstantinos Chrissafis. « New Bio-Based Binding Systems for Plywood Panels ». Applied Sciences 14, n^o 13 (4 juillet 2024) : 5862. http://dx.doi.org/10.3390/app14135862.

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This study investigated the use of non-formaldehyde binders in the production of plywood panels, focusing on mixtures containing 70% poly 4,4’-methylene diphenyl isocyanate (pMDI) and 30% soy flour (SF), along with blends of soy flour and agricultural residues (olive by-products—with and without extraction of their bioactive ingredients—and defatted hemp seeds). The basic properties of these biomaterials, such as moisture content, pH, and buffering capacity, were determined with laboratory analysis. Adhesive mixtures were characterized using attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and thermogravimetric analysis (TGA). The adhesive’s bonding ability was evaluated by manufacturing plywood panels on a laboratory scale, simulating industrial practices. The glue lines were visually inspected with a stereomicroscope. Micro-ATR-FTIR study of the cross-sections of plywood panels showed the full consumption of isocyanate groups indicating effective curing of the adhesive. Mixtures containing olive residues, particularly olive skin and stones, showed improved thermal stability in the TGA study. The mechanical properties of the plywood panels were assessed with three-point bending tests, while their shear strength and wood failure performance were tested according to the European standards used in the relevant industry (EN 314.1:2004 and EN 314.2:1993). In terms of flexural properties, the adhesive with non-extracted (NE) residual olive skin (ROS) showed the highest flexural strength of around 17 MPa and a flexural modulus of 650 MPa. The formulations containing extracted materials from hemp seeds (HSs) and residual olive skin (ROS) showed the best overall performance with wood failure values of 85% and 75% after the most severe cyclic test (EN314.1:2004-Pretreatment 5.1.3). Overall, the results showed that binders prepared with residual olive skin and defatted hemp seeds have promising performance and can be used in the manufacture of plywood panels.

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Karaca, Banu Taktak, James Meyer, Sarah VanOosten, Mark Richter et Candan Tamerler. « Modular Peptide-Based Hybrid Nanoprobes for Bio-Imaging and Bio-Sensing ». MRS Proceedings 1621 (2014) : 155–61. http://dx.doi.org/10.1557/opl.2014.368.

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ABSTRACTThe self-organization of functional proteins directly onto solid materials is attractive to a wide range of biomaterials and systems that need to accommodate a biological recognition element. In such systems, inorganic binding peptides may be an essential component due to their high affinity and selective binding features onto different types of solid surfaces. This study demonstrates a peptide-enabled self-assembly technique for designing well-defined protein arrays over a metal surface. To illustrate this concept, we designed a fusion protein that simultaneously displays a red fluorescence protein (DsRed-monomer), which is highly selective for copper ions, and a gold binding peptide AuBP. The peptide tag, AuBP, self-directs the organization of DsRed-monomer protein onto a gold surface and forms arrays built upon an efficient control of the organic/inorganic interface at the molecular level. The peptide-assisted design offers a modular approach for fabrication of fluorescent-based protein arrays with copper ion sensing ability.

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Zhang, Yi, Suna Fan et Yaopeng Zhang. « Bio-memristors based on silk fibroin ». Materials Horizons 8, n^o 12 (2021) : 3281–94. http://dx.doi.org/10.1039/d1mh01433a.

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Ito, Koji. « Bio-Mimetic Control Systems ». Journal of Robotics and Mechatronics 6, n^o 1 (20 février 1994) : 109–13. http://dx.doi.org/10.20965/jrm.1994.p0109.

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Bio-mimetic control is intended to study the theoretical framework of autonomous decentralized control systems based on the nonlinear dynamical system theory. It is useful for understanding and designing the parallel-decentralized architecture and the self-organizing function which play an important part in the motor control systems. Based on these theories, research should also be directed toward the analysis of the spatiotemporal motor patterns of the locomotion and arm action as well as toward the application to the sensory-motor coordination and the cooperative control of multiple robots.

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HAMDI, Mustapha, et Antoine FERREIRA. « PROTOTYPING PROTEIN BASED BIO-NANOROBOTIC SYSTEMS USING VIRTUAL REALITY ». IFAC Proceedings Volumes 39, n^o 16 (2006) : 102–7. http://dx.doi.org/10.3182/20060912-3-de-2911.00021.

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Gao, Shuting, Guosheng Tang, Dawei Hua, Ranhua Xiong, Jingquan Han, Shaohua Jiang, Qilu Zhang et Chaobo Huang. « Stimuli-responsive bio-based polymeric systems and their applications ». Journal of Materials Chemistry B 7, n^o 5 (2019) : 709–29. http://dx.doi.org/10.1039/c8tb02491j.

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Calovi, Massimo, Alessia Zanardi et Stefano Rossi. « Recent Advances in Bio-Based Wood Protective Systems : A Comprehensive Review ». Applied Sciences 14, n^o 2 (15 janvier 2024) : 736. http://dx.doi.org/10.3390/app14020736.

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This review emphasizes the recent ongoing shift in the wood coating industry towards bio-based resources and circular economy principles, promoting eco-friendly alternatives. In addressing wood’s vulnerabilities, this study investigates the use of natural compounds and biopolymers to enhance wood coatings. These materials contribute to protective matrices that safeguard wood surfaces against diverse challenges. Essential oils, vegetable oils, and bio-based polymers are explored for their potential in crafting eco-friendly and durable coating matrices. Furthermore, this review covers efforts to counter weathering and biological decay through the application of various natural compounds and extracts. It evaluates the effectiveness of different bio-based alternatives to traditional chemical preservatives and highlights promising candidates. This review also delves into the incorporation of sustainable pigments and dyes into wood coatings to enhance both protective and aesthetic qualities. Innovative pigments are able to provide visually appealing solutions in line with sustainability principles. As the wood coating industry embraces bio-based resources and the circular economy, researchers are actively developing protective solutions that encompass the coating matrix, preservatives, bio-based fillers, and natural-pigment dyes. This review showcases the continuous efforts of academia and industry to enhance wood coatings’ effectiveness, durability, and sustainability, while maintaining their aesthetic appeal.

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Sun, Bo, Min Zhang, Jing Shen, Zhibin He, Pedram Fatehi et Yonghao Ni. « Applications of Cellulose-based Materials in Sustained Drug Delivery Systems ». Current Medicinal Chemistry 26, n^o 14 (24 juillet 2019) : 2485–501. http://dx.doi.org/10.2174/0929867324666170705143308.

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Bio-compatible, bio-degradable, and bio-available excipients are of critical interest for drug delivery systems. Cellulose and its derivative-based excipients have been well studied due to their green/natural and unique encapsulation/binding properties. They are often used in controlled/sustained drug delivery systems. In these applications, cellulose and its derivatives function generally can modify the solubility/gelling behavior of drugs, resulting in different mechanisms for controlling the release profiles of drugs. In this paper, the current knowledge in the structure and chemistry of conventional cellulose derivatives, and their applications in drug delivery systems are briefly reviewed. The development of innovative cellulose-based materials, including micro-cellulose (MC) and nano-cellulose (NC) in the applications of sustained drug delivery, is also discussed.

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Ginovart Gisbert, Marta, Monica Blanco, Xavier Portell et Pol Ferrer-Closas. « Individual-based modeling : an attractive methodology to study bio systems ». Enseñanza de las Ciencias. Revista de investigación y experiencias didácticas 30, n^o 2 (7 mai 2012) : 93. http://dx.doi.org/10.5565/rev/ec/v30n2.572.

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Jayanthi, Shridhar, et Domitilla Del Vecchio. « Retroactivity Attenuation in Bio-Molecular Systems Based on Timescale Separation ». IEEE Transactions on Automatic Control 56, n^o 4 (avril 2011) : 748–61. http://dx.doi.org/10.1109/tac.2010.2069631.

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Laoutid, Fouad, Valeriia Karaseva, Lucie Costes, Sylvain Brohez, Rosica Mincheva et Philippe Dubois. « Novel Bio-based Flame Retardant Systems Derived from Tannic Acid ». Journal of Renewable Materials 6, n^o 7 (2018) : 559–72. http://dx.doi.org/10.32604/jrm.2018.00004.

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Arnob, Md Masud Parvez, et Wei-Chuan Shih. « 3-Dimensional Plasmonic Substrates Based on Chicken Eggshell Bio-Templates for SERS-Based Bio-Sensing ». Micromachines 8, n^o 6 (21 juin 2017) : 196. http://dx.doi.org/10.3390/mi8060196.

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Chu, Xi, Jianwei Tu, Heather R. Berensmann, John J. La Scala et Giuseppe R. Palmese. « High Tg, Bio-Based Isosorbide Methacrylate Resin Systems for Vat Photopolymerization ». Polymers 15, n^o 9 (24 avril 2023) : 2007. http://dx.doi.org/10.3390/polym15092007.

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The use of isosorbide-derived polymers has garnered significant attention in recent decades as a high-performance, renewable material sourced from biomass. Of particular interest is isosorbide methacrylate, which possesses low viscosity (<500 cps), high thermal properties (Tg ≈ 220 °C), and high modulus (>4 GPa). These characteristics present a promising opportunity to replace BPA-derived methacrylate compounds in various applications. This investigation aims to synthesize and characterize isosorbide-based low-viscosity resin systems for 3D printing. The resin blends are composed of isosorbide methacrylate and two bio-renewable methacrylates, furfuryl methacrylate (FM) and bis-hydroxymethyl-furan methacrylate (BHMF-M), polymerized through a digital light processing (DLP) technique. The addition of the bio-based co-monomers serves to enhance the fracture toughness of the brittle isosorbide methacrylate crosslinked homopolymer (GIc = 37 J/m2). The resulting polymers exhibit Tg values greater than 200 °C and GIc around 100 J/m2. These resin systems hold potential for imparting high bio-based content to polymers used in additive manufacturing for high-performance applications.

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Mendis, S. Sameera D. « Synthesis, Characterization of Bio-based Polyol and Assess the Effectiveness of Bio-based Polyurethane Direct-to-metal Coating System ». International Journal of Research and Innovation in Applied Science VIII, n^o VI (2023) : 243–55. http://dx.doi.org/10.51584/ijrias.2023.8625.

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Crude oil is neither a long-lasting energy source nor a raw material source, has a high consumption rate relative to a low regeneration rate and creates massive environmental disorders. Polyurethane is well known and is the most popular film forming material in the coating industry because of its better performance. A coconut oil-based polyol (biobased polyol) was synthesized and acid value, viscosity, reaction water release, oil length, FTIR spectrum, differential scanning calorimetry and colourimetric index were assessed during the synthesis. A series of pigmented wet paint samples were prepared by bio-based polyol and the optimum paint sample was selected among them based on drying time, pencil hardness, dry film thickness, cross hatch test and cylindrical mandrel blending. Two wet PU paint samples, representing commercially available crude oil-based polyols, were prepared to compare in the same aspects with a PU paint sample made with a bio-based polyol (BBP). According to the results, it was proven that bio-based PU paint showed equal magnitudes in film flexibility due to the cylindrical mandrel bending test, film hardness due to the pencil hardness test, substrate adhesion due to the crosshatch test and impact resistance. In some properties, bio-based PU exceeded at least one crude oil-based PU such as gloss, hard drying time and density. Meanwhile, bio-based PU systems must be improved in viscosity and water resistance to compete with artificial PU systems.

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Galiautdinov, Rinat. « Microservice-Oriented Architecture in Distributed Artificial Intelligence Systems and the Language of AI in Bio-Neural Systems ». International Journal of Applied Research in Bioinformatics 10, n^o 2 (juillet 2020) : 18–27. http://dx.doi.org/10.4018/ijarb.2020070103.

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This article describes the views on the architecture of distributed AI systems based on the simulated bio-neurons representing the basis for the bio-neural circuits, which represent distributed AI subsystems and serve as microservices for the AI client-side systems. The article also describes the interface and the demands to the protocol of communication with the distributed subsystems of the AI, the ways of tuning the synaptic contacts in the brand new neural circuits, which represent the distributed AI systems, and finally, the new approach to communication with such the systems based on the new computer language, which will be used in construction and tuning of such the AI systems.

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Kumari, Shikha, Alka Rao, Manjeet Kaur et Geeta Dhania. « Petroleum-Based Plastics Versus Bio-Based Plastics : A Review ». Nature Environment and Pollution Technology 22, n^o 3 (1 septembre 2023) : 1111–24. http://dx.doi.org/10.46488/nept.2023.v22i03.003.

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Plastic needs have expanded along with population growth, industrialization, and urbanization. Plastic is unrivaled due to its useful properties and is used to prepare numerous important goods daily. This paper encloses the different kinds and applications of petroleum-based plastic and the drawbacks related to their use, i.e., its nonbiodegradability which leads to their stay in the environment for a very long time. Additionally, there are not enough effective disposal techniques for the large volume of plastic waste produced; thus, plastic garbage builds up in the environment and endangers it. Limiting the usage of plastic is necessary to protect the environment. This can be done with the help of bioplastic, which is an excellent substitute for plastic. The different kinds of bioplastic and their biodegradability in different mediums, viz., soil compost and aquatic systems, are addressed in this paper. Along this, the different areas of application of bioplastic have been explored. The present study also addresses the underlying mechanism of plastic polymerization and biodegradation and the current status of bioplastics in the global market.

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Merheb, Abdel-Razzak, Hassan Noura et François Bateman. « Mathematical Modeling of Ecological Systems Algorithm. » Lebanese Science Journal 22, n^o 2 (2 mars 2022) : 209–31. http://dx.doi.org/10.22453/lsj-022.2.209-231.

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In this paper, the mathematical modeling of a new bio-inspired evolutionary search algorithm called Ecological Systems Algorithm (ESA) is presented. ESA imitates ecological rules to find iteratively the optimum of a given function through interaction between predator and prey search species. ESA is then compared to the well-known Genetic Algorithm which is a powerful bio-inspired stochastic search/optimization algorithm used for decades. Simulation results of the two algorithms optimizing ten different benchmark functions are used to investigate and compare both algorithms based on their speed, performance, reliability, and efficiency.

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Regulska, Elzbieta, et Carlos Romero-Nieto. « Highlights on π-systems based on six-membered phosphorus heterocycles ». Dalton Transactions 47, n^o 31 (2018) : 10344–59. http://dx.doi.org/10.1039/c8dt01485j.

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Ramon, Eric, Carmen Sguazzo et Pedro Moreira. « A Review of Recent Research on Bio-Based Epoxy Systems for Engineering Applications and Potentialities in the Aviation Sector ». Aerospace 5, n^o 4 (16 octobre 2018) : 110. http://dx.doi.org/10.3390/aerospace5040110.

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Epoxy resins are one of the most widely used thermosets in different engineering fields, due to their chemical resistance and thermo-mechanical properties. Recently, bio-based thermoset resin systems have attracted significant attention given their environmental benefits related to the wide variety of available natural resources, as well as the resulting reduction in the use of petroleum feedstocks. During the last two decades, considerable improvement on the properties of bio-sourced resins has been achieved to obtain performances comparable to petroleum-based systems. This paper reviews recent advances on new bio-based epoxy resins, derived from natural oils, natural polyphenols, saccharides, natural rubber and rosin. Particular focus has been given to novel chemical formulations and resulting mechanical properties of natural derived- epoxies, curing agents or entire systems, constituting an interesting alternative for a large variety of engineering applications, including the aviation sector. The present work is within the scope of the ECO-COMPASS project, where new bio-sourced epoxy matrixes for green composites are under investigation.

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Păușescu, Iulia, Diana-Maria Dreavă, Ioan Bîtcan, Raluca Argetoianu, Diana Dăescu et Mihai Medeleanu. « Bio-Based pH Indicator Films for Intelligent Food Packaging Applications ». Polymers 14, n^o 17 (1 septembre 2022) : 3622. http://dx.doi.org/10.3390/polym14173622.

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The widespread concerns about the environmental problems caused by conventional plastic food packaging and food waste led to a growing effort to develop active and intelligent systems produced from renewable biodegradable polymers for food packaging applications. Among intelligent systems, the most widely used are pH indicators, which are generally based on a pH-sensitive dye incorporated into a solid support. The objective of this study was to develop new intelligent systems based on renewable biodegradable polymers and a new bio-inspired pH-sensitive dye. The structure of the dye was elucidated through FT-IR and 1D and 2D NMR spectroscopic analyses. UV-VIS measurements of the dye solutions at various pH values proved their halochromic properties. Their toxicity was evaluated through theoretical calculations, and no toxicity risks were found. The new anthocyanidin was used for the development of biodegradable intelligent systems based on chitosan blends. The obtained polymeric films were characterized through UV-VIS and FT-IR spectroscopy. Their thermal properties were assessed through a thermogravimetric analysis, which showed a better stability of chitosan–PVA–dye and chitosan–starch–dye films compared to those of chitosan–cellulose–dye films and the dye itself. The films’ sensitivity to pH variations was evaluated through immersion in buffer solutions with pH values ranging from 2 to 12, and visible color changes were observed.

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Rosi, Comez, Sassi, Bertoldo, Buratti, Petrillo, Paciaroni, Corezzi et Orecchini. « Tuning the Fast Dynamics of PNIPAM-Based Systems with Bio-Cosolvents ». Proceedings 26, n^o 1 (5 septembre 2019) : 19. http://dx.doi.org/10.3390/proceedings2019026019.

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Al-Jumaily, Adel, et Ricardo A. Olivares. « Bio-driven system-based virtual reality for prosthetic and rehabilitation systems ». Signal, Image and Video Processing 6, n^o 1 (2 septembre 2010) : 71–84. http://dx.doi.org/10.1007/s11760-010-0180-x.

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Gao, Yongqiang, Xinjun Feng, Mo Xian, Qi Wang et Guang Zhao. « Inducible cell lysis systems in microbial production of bio-based chemicals ». Applied Microbiology and Biotechnology 97, n^o 16 (20 juillet 2013) : 7121–29. http://dx.doi.org/10.1007/s00253-013-5100-x.

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Ates, Murat. « A review study of (bio)sensor systems based on conducting polymers ». Materials Science and Engineering : C 33, n^o 4 (mai 2013) : 1853–59. http://dx.doi.org/10.1016/j.msec.2013.01.035.

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Upadhyay, Aakash, Phillip Agbesi, Kazi Md Yasin Arafat, Fernando Urdaneta, Moumita Dey, Munmun Basak, Shiyao Hong, Chisom Umeileka et Dimitris Argyropoulos. « Bio-based smart packaging : Fundamentals and functions in sustainable food systems ». Trends in Food Science & ; Technology 145 (mars 2024) : 104369. http://dx.doi.org/10.1016/j.tifs.2024.104369.

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Donkor, Leticia, Gladys Kontoh, Abu Yaya, John Kwame Bediako et Vitus Apalangya. « Bio-based and sustainable food packaging systems : relevance, challenges, and prospects ». Applied Food Research 3, n^o 2 (décembre 2023) : 100356. http://dx.doi.org/10.1016/j.afres.2023.100356.

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Li, Yu-Qi, Kai-Wen Wang, Ke-Li Zhang, Ze-Wei Zhou et Xiao-Hua Yang. « Spatial and temporal distributions of migration in bio-retention systems ». Thermal Science 18, n^o 5 (2014) : 1557–62. http://dx.doi.org/10.2298/tsci1405557l.

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Urban bio-retention system is meaningful in reducing rainfall runoff and enhancing infiltration capacity. But the moisture migration in bio-retention systems are not clear under climate change. The spatial and temporal distribution of moisture under different rainfall events in bio-retention systems are studied in this paper based on experimental data in Beijing. Richards model is introduced to simulate the spatial and temporal distribution of moisture including pressure head, hydraulic head and water content under different initial and boundary conditions. As a result, we found that from the depth of the node to the lower boundary, the values of pressure head and hydraulic head increase with depth and decrease with time, while the values of water content represent opposite trends relative to the distribution of pressure head and hydraulic head in bio-retention systems.

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Tan, Jia-Neng, Mohammed Ahmar et Yves Queneau. « Bio-based solvents for the Baylis–Hillman reaction of HMF ». RSC Advances 5, n^o 85 (2015) : 69238–42. http://dx.doi.org/10.1039/c5ra14554f.

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Calabretta, Maria Maddalena, Martina Zangheri, Donato Calabria, Antonia Lopreside, Laura Montali, Elisa Marchegiani, Ilaria Trozzi, Massimo Guardigli, Mara Mirasoli et Elisa Michelini. « Paper-Based Immunosensors with Bio-Chemiluminescence Detection ». Sensors 21, n^o 13 (24 juin 2021) : 4309. http://dx.doi.org/10.3390/s21134309.

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Since the introduction of paper-based analytical devices as potential diagnostic platforms a few decades ago, huge efforts have been made in this field to develop systems suitable for meeting the requirements for the point-of-care (POC) approach. Considerable progress has been achieved in the adaptation of existing analysis methods to a paper-based format, especially considering the chemiluminescent (CL)-immunoassays-based techniques. The implementation of biospecific assays with CL detection and paper-based technology represents an ideal solution for the development of portable analytical devices for on-site applications, since the peculiarities of these features create a unique combination for fitting the POC purposes. Despite this, the scientific production is not paralleled by the diffusion of such devices into everyday life. This review aims to highlight the open issues that are responsible for this discrepancy and to find the aspects that require a focused and targeted research to make these methods really applicable in routine analysis.

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Choi, Jin-Woo, Chong H. Ahn, Shekhar Bhansali et H. Thurman Henderson. « A new magnetic bead-based, filterless bio-separator with planar electromagnet surfaces for integrated bio-detection systems ». Sensors and Actuators B : Chemical 68, n^o 1-3 (août 2000) : 34–39. http://dx.doi.org/10.1016/s0925-4005(00)00458-5.

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Tsolekile, Ncediwe, Simphiwe Nelana et Oluwatobi Samuel Oluwafemi. « Porphyrin as Diagnostic and Therapeutic Agent ». Molecules 24, n^o 14 (23 juillet 2019) : 2669. http://dx.doi.org/10.3390/molecules24142669.

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The synthesis and application of porphyrins has seen a huge shift towards research in porphyrin bio-molecular based systems in the past decade. The preferential localization of porphyrins in tumors, as well as their ability to generate reactive singlet oxygen and low dark toxicities has resulted in their use in therapeutic applications such as photodynamic therapy. However, their inherent lack of bio-distribution due to water insolubility has shifted research into porphyrin-nanomaterial conjugated systems to address this challenge. This has broadened their bio-applications, viz. bio-sensors, fluorescence tracking, in vivo magnetic resonance imaging (MRI), and positron emission tomography (PET)/CT imaging to photo-immuno-therapy just to highlight a few. This paper reviews the unique theranostic role of porphyrins in disease diagnosis and therapy. The review highlights porphyrin conjugated systems and their applications. The review ends by bringing current challenges and future perspectives of porphyrin based conjugated systems and their respective applications into light.

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Tadesse, Yonas, Lianjun Wu et Lokesh K. Saharan. « Musculoskeletal System for Bio-Inspired Robotic Systems ». Mechanical Engineering 138, n^o 03 (1 mars 2016) : S11—S16. http://dx.doi.org/10.1115/1.2016-mar-8.

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This article presents a research focused on developing musculoskeletal system for bio-inspired robotic systems. A musculoskeletal system is the fundamental structure that allows complex mobility of biological systems. This paper briefly describes the recently introduced twisted and coiled polymer (TCP) muscles and a novel design of musculoskeletal system based on ball and socket joint, as well as their application in a 3D printed humanoid robot. The challenge to develop such systems is multifaceted, including design, manufacturing, system integration, control methods, and energy usage. Some of the challenges in humanoid design are the degrees of freedom and the synergetic combination of hardware and software to perform a particular task. The other challenge is affordability of the platform. Most humanoids are very expensive. Since the TCP-based actuators are inexpensive and musculoskeletal systems inspired by biological systems are optimum for performance, they will address these problems. The bio-inspired ball and socket joint shown in the article can be cascaded to create complex robots, for example, for the shoulder joint of a humanoid.

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Mann, Danny, et Jason Morrison. « Are there curricular differences between biology-based and application-based "bio" engineering disciplines ? » Canadian Biosystems Engineering 63, n^o 1 (31 décembre 2021) : 9.19–9.29. http://dx.doi.org/10.7451/cbe.2021.63.9.19.

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Several authors have previously promoted the transformation of the application-based agricultural engineering discipline into a biology-based biological engineering discipline. A systematic analysis of titles for courses being taught by ASABE-umbrella programs across North America was undertaken to identify curricular differences between biology-based and application-based “bio” engineering disciplines. Based on 44 ASABE-umbrella programs analyzed, the four most commonly used program names were biological engineering (25%), biosystems engineering (20%), biological systems engineering (15.9%) and agricultural engineering (13.6%). Definitions of these four program names were reviewed; biosystems, biological systems and agricultural engineering are typically defined such that they are best described as application-based “bio” engineering disciplines while biological engineering is best described as a biology-based engineering discipline. Based on statistical analysis of the frequency of words in course titles, there was a significant increase in the usage of the word “food” and a lack of the word “project” in the course titles within biological engineering programs. Over half of the unique options were found in biological engineering programs suggesting that they do offer unique course content compared with biosystems, biological systems and agricultural engineering degree programs, however, it is noteworthy that four options appear across all four degrees. It is concluded that there are curricular differences between biology-based and application-based “bio” engineering disciplines, however, the curricular differences are not as substantive as one might conclude from the philosophical discussions in the literature. Alternatively, it may simply not be possible to detect curricular differences solely from an analysis of the course titles

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Gonçalves, Diogo, João Moura Bordado, Ana C. Marques et Rui Galhano dos Santos. « Non-Formaldehyde, Bio-Based Adhesives for Use in Wood-Based Panel Manufacturing Industry—A Review ». Polymers 13, n^o 23 (24 novembre 2021) : 4086. http://dx.doi.org/10.3390/polym13234086.

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There is a strong need to develop and implement appropriate alternatives to replace formaldehyde-based adhesive systems, such as phenol–formaldehyde, in the industry of wood-based panels (WBPs). This is due to the toxicity and volatility of formaldehyde and restrictions on its use associated with some formaldehyde-based adhesives. Additionally, the current pressure to reduce the dependence on polymeric materials, including adhesives, from petrochemical-based sources has led to increased interest in bio-based adhesives, which, in some cases, already provide acceptable properties to the end-product. Among the potential raw materials for good-quality, renewable-based adhesive formulations, this paper highlights tannins, lignin, and protein sources. However, regarding renewable sources, specific features must be considered, such as their lower reactivity than certain petrochemical-based sources and, therefore, higher production costs, resource availability issues, and the need for toxicological investigations on alternative systems, to compare them to conventional systems. As a result, further research is highly encouraged to develop viable formaldehyde-free adhesive systems based on renewable sources, either at the technical or economical level. Moreover, herein, we also showcase the present market of WBPs, highlighting the obstacles that the alternative and new bio-based adhesives must overcome.

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Wojnowska-Baryła, Irena, Dorota Kulikowska et Katarzyna Bernat. « Effect of Bio-Based Products on Waste Management ». Sustainability 12, n^o 5 (9 mars 2020) : 2088. http://dx.doi.org/10.3390/su12052088.

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This article focuses on the end-of-life management of bio-based products by recycling, which reduces landfilling. Bio-plastics are very important materials, due to their widespread use in various fields. The advantage of these products is that they primarily use renewable materials. At its end-of-life, a bio-based product is disposed of and becomes post-consumer waste. Correctly designing waste management systems for bio-based products is important for both the environment and utilization of these wastes as resources in a circular economy. Bioplastics are suitable for reuse, mechanical recycling, organic recycling, and energy recovery. The volume of bio-based waste produced today can be recycled alongside conventional wastes. Furthermore, using biodegradable and compostable bio-based products strengthens industrial composting (organic recycling) as a waste management option. If bio-based products can no longer be reused or recycled, it is possible to use them to produce bio-energy. For future effective management of bio-based waste, it should be determined how these products are currently being managed. Methods for valorizing bio-based products should be developed. Technologies could be introduced in conjunction with existing composting and anaerobic digestion infrastructure as parts of biorefineries. One option worth considering would be separating bio-based products from plastic waste, to maintain the effectiveness of chemical recycling of plastic waste. Composting bio-based products with biowaste is another option for organic recycling. For this option to be viable, the conditions which allow safe compost to be produced need to be determined and compost should lose its waste status in order to promote bio-based organic recycling.

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Sonnabend, Maresa, Suzanne G. Aubin, Annette M. Schmidt et Marc C. Leimenstoll. « Sophorolipid-Based Oligomers as Polyol Components for Polyurethane Systems ». Polymers 13, n^o 12 (18 juin 2021) : 2001. http://dx.doi.org/10.3390/polym13122001.

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Due to reasons of sustainability and conservation of resources, polyurethane (PU)-based systems with preferably neutral carbon footprints are in increased focus of research and development. The proper design and development of bio-based polyols are of particular interest since such polyols may have special property profiles that allow the novel products to enter new applications. Sophorolipids (SL) represent a bio-based toolbox for polyol building blocks to yield diverse chemical products. For a reasonable evaluation of the potential for PU chemistry, however, further investigations in terms of synthesis, derivatization, reproducibility, and reactivity towards isocyanates are required. It was demonstrated that SL can act as crosslinker or as plasticizer in PU systems depending on employed stoichiometry. (ω-1)-hydroxyl fatty acids can be derived from SL and converted successively to polyester polyols and PU. Additionally, (ω-1)-hydroxyl fatty acid azides can be prepared indirectly from SL and converted to A/B type PU by Curtius rearrangement.

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Han, Zhuangyu, A. N. M. Nafiul Islam et Abhronil Sengupta. « Astromorphic Self-Repair of Neuromorphic Hardware Systems ». Proceedings of the AAAI Conference on Artificial Intelligence 37, n^o 6 (26 juin 2023) : 7821–29. http://dx.doi.org/10.1609/aaai.v37i6.25947.

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While neuromorphic computing architectures based on Spiking Neural Networks (SNNs) are increasingly gaining interest as a pathway toward bio-plausible machine learning, attention is still focused on computational units like the neuron and synapse. Shifting from this neuro-synaptic perspective, this paper attempts to explore the self-repair role of glial cells, in particular, astrocytes. The work investigates stronger correlations with astrocyte computational neuroscience models to develop macro-models with a higher degree of bio-fidelity that accurately captures the dynamic behavior of the self-repair process. Hardware-software co-design analysis reveals that bio-morphic astrocytic regulation has the potential to self-repair hardware realistic faults in neuromorphic hardware systems with significantly better accuracy and repair convergence for unsupervised learning tasks on the MNIST and F-MNIST datasets. Our implementation source code and trained models are available at https://github.com/NeuroCompLab-psu/Astromorphic_Self_Repair.

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Rodias, Efthymios, Eirini Aivazidou, Charisios Achillas, Dimitrios Aidonis et Dionysis Bochtis. « Water-Energy-Nutrients Synergies in the Agrifood Sector : A Circular Economy Framework ». Energies 14, n^o 1 (30 décembre 2020) : 159. http://dx.doi.org/10.3390/en14010159.

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Circular economy is emerging as a regenerative concept that minimizes emissions, relies on renewable energy, and eliminates waste based on the design of closed-loop systems and the reuse of materials and resources. The implementation of circular economy practices in resource-consuming agricultural systems is essential for reducing the environmental ramifications of the currently linear systems. As the renewable segment of circular economy, bioeconomy facilitates the production of renewable biological resources (i.e., biomass) that transform into nutrients, bio-based products, and bioenergy. The use of recycled agro-industrial wastewater in agricultural activities (e.g., irrigation) can further foster the circularity of the bio-based systems. In this context, this paper aims to provide a literature review in the field of circular economy for the agrifood sector to enhance resource efficiency by: (i) minimizing the use of natural resources (e.g., water, energy), (ii) decreasing the use of chemical fertilizers, (iii) utilizing bio-based materials (e.g., agricultural/livestock residues), and (iv) reusing wastewater from agrifood operations. The final objective is to investigate any direct or indirect interactions within the water-energy-nutrients nexus. The derived framework of synergetic circular economy interventions in agriculture can act as a basis for developing circular bio-based business models and creating value-added agrifood products.

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Valencia, Luis, Francisco Javier Enríquez-Medrano, Héctor Ricardo López González, Rishab Handa, Hened Saade Caballero, Ricardo Mendoza Carrizales, José Luis Olivares-Romero et Ramón Enrique Díaz de León Gómez. « Bio-elastomers based on polyocimene synthesized via coordination polymerization using neodymium-based catalytic systems ». RSC Advances 10, n^o 60 (2020) : 36539–45. http://dx.doi.org/10.1039/d0ra06583h.

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Yoon, Jungjin, Yuchen Hou, Abbey Marie Knoepfel, Dong Yang, Tao Ye, Luyao Zheng, Neela Yennawar, Mohan Sanghadasa, Shashank Priya et Kai Wang. « Bio-inspired strategies for next-generation perovskite solar mobile power sources ». Chemical Society Reviews 50, n^o 23 (2021) : 12915–84. http://dx.doi.org/10.1039/d0cs01493a.

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This review highlights existing prototypes and potential strategies of bio-inspiration including bio-molecules, -structures, -models, and -systems for applications in perovskite-based mobile solar power sources.

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SHING, CHRISTOPHER, LIQIAO QIN et SHALYA SAWYER. « BIO-SENSING SENSITIVITY OF A NANOPARTICLE BASED ULTRAVIOLET PHOTODETECTOR ». International Journal of High Speed Electronics and Systems 20, n^o 03 (septembre 2011) : 505–13. http://dx.doi.org/10.1142/s0129156411006799.

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Bio-sensing sensitivity of a spectrally selective nanoparticle based ultraviolet (UV) photodetector is characterized in comparison to a silicon photodiode and a photomultiplier tube (PMT). The nanoparticle based photodetector is comprised of poly-vinyl alcohol (PVA) coated zinc-oxide ( ZnO ) nanoparticles deposited on an aluminum-gallium-nitride ( AlGaN ) epitaxially grown substrate. The sensitivity was determined by measuring the fluorescence intensity of the native fluorophore, tryptophan, in Escherichia coli (E-coli, ATCC-25922) cells. Tryptophan intrinsically fluoresces with a peak at 340 nm under 280 nm UV light illumination. It is shown that this detector can sense the concentration of E-coli to 2.5 × 108 cfu/mL while the silicon photodiode cannot detect the intrinsic fluorescence at all. Nevertheless, the PMT outperformed the ZnO nanoparticle- AlGaN substrate based photodetector with the ability to sense E-coli concentrations to 3.91 × 106 cfu/mL. However, because PMT based systems are commonly limited by high dark current, susceptible to environmental changes, sensitive to ambient light, are not spectrally selective and have high power consumption, biological detection systems comprised of these ZnO nanoparticle- AlGaN substrate based photodetectors can be more effective for near real time characterization of potential bacterial contamination.

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Lv, Wenxing, Jialin Cai, Huayao Tu, Like Zhang, Rongxin Li, Zhe Yuan, Giovanni Finocchio et al. « Stochastic artificial synapses based on nanoscale magnetic tunnel junction for neuromorphic applications ». Applied Physics Letters 121, n^o 23 (5 décembre 2022) : 232406. http://dx.doi.org/10.1063/5.0126392.

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Bio-inspired neuromorphic computing has aroused great interest due to its potential to realize on-chip learning with bio-plausibility and energy efficiency. Realizing spike-timing-dependent plasticity (STDP) in synaptic electronics is critical toward bio-inspired neuromorphic computing systems. Here, we report on stochastic artificial synapses based on nanoscale magnetic tunnel junctions that can implement STDP harnessing stochastic magnetization switching. We further demonstrate that both the magnitude and the temporal requirements for STDP can be modulated via engineering the pre- and post-synaptic voltage pulses. Moreover, based on arrays of binary magnetic synapses, unsupervised learning can be realized for neuromorphic computing tasks such as pattern recognition with great computing accuracy and efficiency. Our study suggests a potential route toward on-chip neuromorphic computing systems.

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Yang, Dongsoo, Cindy Pricilia Surya Prabowo, Hyunmin Eun, Seon Young Park, In Jin Cho, Song Jiao et Sang Yup Lee. « Escherichia coli as a platform microbial host for systems metabolic engineering ». Essays in Biochemistry 65, n^o 2 (juillet 2021) : 225–46. http://dx.doi.org/10.1042/ebc20200172.

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Abstract Bio-based production of industrially important chemicals and materials from non-edible and renewable biomass has become increasingly important to resolve the urgent worldwide issues including climate change. Also, bio-based production, instead of chemical synthesis, of food ingredients and natural products has gained ever increasing interest for health benefits. Systems metabolic engineering allows more efficient development of microbial cell factories capable of sustainable, green, and human-friendly production of diverse chemicals and materials. Escherichia coli is unarguably the most widely employed host strain for the bio-based production of chemicals and materials. In the present paper, we review the tools and strategies employed for systems metabolic engineering of E. coli. Next, representative examples and strategies for the production of chemicals including biofuels, bulk and specialty chemicals, and natural products are discussed, followed by discussion on materials including polyhydroxyalkanoates (PHAs), proteins, and nanomaterials. Lastly, future perspectives and challenges remaining for systems metabolic engineering of E. coli are discussed.

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M. Shaju, Pragash. « Bio-based lightweight building blocks : A review ». i-manager's Journal on Structural Engineering 11, n^o 4 (2023) : 40. http://dx.doi.org/10.26634/jste.11.4.19806.

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This paper explores the development and utilization of bio-based lightweight building blocks as a sustainable solution in the construction industry. With increasing concerns about the environmental impact of traditional building materials, there is a growing need for eco-friendly alternatives. This study investigates the potential of natural and renewable materials, such as agricultural waste fibers, bamboo, or hemp, in combination with binders to create lightweight building blocks that offer both structural integrity and environmental sustainability. The research focuses on the formulation of these blocks, considering the optimal combination of bio-based materials and binders to achieve the desired properties. The performance characteristics of the bio-based lightweight building blocks, including structural strength, thermal insulation, fire resistance, and durability, are evaluated. The study also highlights the contribution of these blocks to sustainable construction practices, such as reducing carbon footprints and promoting resource efficiency. By providing an overview of the existing research in this field, the paper discusses the benefits and challenges associated with bio-based lightweight building blocks exploring economic feasibility, availability of materials, and compatibility with existing construction practices. Furthermore, the paper suggests avenues for future research, emphasizing the need for standardized testing protocols, certification systems, and a wider implementation of bio-based lightweight building blocks in the construction industry. This study sheds light on the potential of bio-based lightweight building blocks to mitigate environmental impact, improve sustainability, and drive innovation in construction practices.

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