Microfluidics can be used to characterize individual cells in a population based on their mechanical traits. In this work, we digitally replicate the microfluidic device developed by Li et al. [1] and perform simulati...
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Trains as a means of mass transportation should protect passengers against potential accidents. To reduce the risk of train accidents due to collisions, train manufacturers should implement a passive safety system. Th...
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Desiccant-coated heat exchangers (DCHEs) enable energy-efficient dehumidification, alleviating the overall heat load on vapor compression refrigeration systems. However, conventional desiccants have limited water upta...
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ISBN:
(数字)9798350356199
ISBN:
(纸本)9798350356205
Desiccant-coated heat exchangers (DCHEs) enable energy-efficient dehumidification, alleviating the overall heat load on vapor compression refrigeration systems. However, conventional desiccants have limited water uptake capacities and high regeneration temperature requirements. This work presents ternary composite desiccants comprising the metal-organic framework, MIL-101(Cr) (where MIL denotes Materials Institute Lavoisier), the superabsorbent polymer polyvinyl alcohol (PVA), and hygroscopic salts for enhanced moisture sorption. Gravimetric water sorption analyses revealed that desiccants containing lithium chloride ($\mathbf{L i C l}$) attained water uptakes greater than their calcium chloride- and copper (II) sulfate-containing counterparts. Subsequent cyclic tests identified the optimal MIL-101(Cr)/PVA/LiCl composite that adsorbed and desorbed moisture readily. From its water sorption isotherm, the 3MIL-101(Cr)/1PVA/1 LiCl desiccant has a water uptake capacity of $2.49 \mathrm{~g}_{\text {water }} \mathbf{g}_{\text {desiccant }}{ }^{-1}$ - nearly double that of MIL-101(Cr) and more than nine times that of silica gel. When coated onto a prototype heat exchanger, the 3MIL-101(Cr)/1PVA/1 LiCl composite demonstrated a gravimetric water uptake more than double that of the silica gel-coated control across three adsorption-desorption cycles. Moreover, low-grade waste heat of $50^{\circ} \mathrm{C}$ could partially regenerate these DCHEs, leaving behind residual moisture of less than $0.5 \mathbf{g}_{\text {water }}$ $\mathbf{g}_{\text {desiccant }}{ }^{-1}$. Consequently, the 3MIL-101(Cr)/1PVA/1LiCl-coated heat exchangers are effective dehumidifiers for addressing the latent heat load towards energy savings in cooling systems.
One of the key emerging technologies in Industry 4.0 is the Digital Twin (DT). Although it promises increased efficiency, productivity, and innovation, its adoption faces challenges such as high investment costs and t...
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One of the key emerging technologies in Industry 4.0 is the Digital Twin (DT). Although it promises increased efficiency, productivity, and innovation, its adoption faces challenges such as high investment costs and the need for workforce requalification. Generative Artificial Intelligence (GAI) emerges as a promising solution, offering capabilities to accelerate development processes and reduce costs. This study aims to leverage GAI to enhance the development of DT and support decision-making in industrial environments by proposing a Generative Assistant for Digital Twin Simulations (GADTS). This proposal generates operational models quickly, offers greater customization, and facilitates the creation of efficient scenario simulations in natural language. The proposal was tested with artificial data. As a result, the development of highly personalized DT simulations with Key Performance Indicators (KPIs) was entirely abstracted into natural language requests.
Climate change has received a lot of attention due to high emissions in the energy sector from coal-dependent generators, but the solution that can be done to overcome this is the co-firing method through CFD simulati...
Climate change has received a lot of attention due to high emissions in the energy sector from coal-dependent generators, but the solution that can be done to overcome this is the co-firing method through CFD simulation with a discrete phase model (DPM) carried out by adding EFB biomass in a ratio 5% and 95% LRC coal are injected into the boiler combustion furnace. The research was carried out on a PC boiler with a generation capacity of 315Mwe. The research results show that the addition of EFB biomass to coal combustion causes changes in the calorific value which has an impact on the high temperature of the combustion process. However, it has a good impact from the operational side of burning coal particles.
Renewable Energy Sources (RESs) stand as a straightforward alternative to complement the energy grid and have been recurrently integrated into the generation and distribution matrices. Physically, generation component...
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This study investigates how to schedule nanosatellite tasks more efficiently using Graph Neural Networks (GNNs). In the Offline Nanosatellite Task Scheduling (ONTS) problem, the goal is to find the optimal schedule fo...
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In tissue engineering, the mechanical properties of the extracellular matrix (ECM) or scaffolds have increasingly been considered to impact therapeutic efficacy by regulating cell behaviors, including differentiation,...
In tissue engineering, the mechanical properties of the extracellular matrix (ECM) or scaffolds have increasingly been considered to impact therapeutic efficacy by regulating cell behaviors, including differentiation, proliferation, migration, and adhesion. However, the understanding of how cells sense, integrate, and convert the mechanical cues from the ECM cues into biochemical signals to control certain cell behaviors is still elusive, especially in 3D, which more closely mimics the natural microenvironment than 2D systems. This review highlights the key differences between 2 and 3D in the contexts of mechanoregulative cell behaviors such as cell adhesion, spreading, migration, and force transmission. Furthermore, critical designing factors that needs to be considered for the fabrication of 3D tissue engineering scaffolds is discussed: stiffness, viscoelasticity, degradability, and the immobilization of biomolecules. Although mechanotransduction in 3D is actively being studied, understanding cellular mechanotransduction in 3D and designing of mechanoregulative 3D scaffolds still presents several challenges, including varying mechanical properties depending on different tissues, dynamic mechanical environments, and integration of multimodal cues. Interdisciplinary methodologies encompassing material engineering, cell biology, and mechanicalengineering would serve to mitigate these challenges and augment our understanding of mechanoregulation governing cellular behaviors, thus fostering advancements in biomedical applications in the future.
Catalyst characteristics such as specific surface area, porosity and active site play an essential role in catalyst design. Understanding of the characteristic functions in controlling catalyst activity is necessary f...
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This paper presents a pose synchronization method for semi-autonomous dynamic robotic swarms with a passivityshort human operator. In the human-robot network, a human operator sends a command signal to and receives vi...
This paper presents a pose synchronization method for semi-autonomous dynamic robotic swarms with a passivityshort human operator. In the human-robot network, a human operator sends a command signal to and receives visual information from only a part of the robotic group. In this setting, the proposed dynamic control scheme achieves not only pose synchronization of all mobile robots but also convergence to the reference pose that the human operator specifies. The main advantage of the proposed method is to guarantee convergence of not only the position but also the orientation to the reference ones in the human-robot network. Finally, we provide human-in-the-loop simulation results through the human operation using a tablet PC to illustrate the performance of the proposed control method.
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