The process of construction evolves day by day with new techniques and materials. Since the materials used in the construction process are nonrenewable, we are in need of new materials and methods to make the construc...
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ISBN:
(数字)9783031699665
ISBN:
(纸本)9783031699658
The process of construction evolves day by day with new techniques and materials. Since the materials used in the construction process are nonrenewable, we are in need of new materials and methods to make the construction process sustainable. In this research work, we are going to use such materials to make reinforced concrete a better material for construction. The materials that we are using in the concrete should enhance the flexural and shear strength of the concrete. The materials we are using should be user-friendly, readily available material, and economical. This study presents the flexural and shear behavior of the crimped steel fibers and polypropylene fibers in the reinforced concrete specimens. In this research work, the structural behavior of fiber-reinforced beams is evaluated under the two-point loading test. The percentages of fibers used in the research work are varied and casted. In addition, the design of steel fiber-reinforced concrete beam is adapted to the design of polypropylene fiber-reinforced concrete beam to validate its design. Short fibers are mixed along with the conventional size fibers to improve the flexural strength and brittleness of the concrete. Zigzag stirrups are provided to improve the strength of the concrete. Four different types of concrete specimens were prepared, namely conventional concrete (0% fibers), crimpled steel fibers + polypropylene fibers (CSF + PF) (0.4% + 0.4%), crimpled steel fibers + polypropylene fibers (CSF + PF) (0.8% + 0.8%), and crimpled steel fibers + polypropylene fibers (CSF + PF) (1.2% + 1.2%). The specimens are subjected to curing and testing after 28 days. It has been found that the compressive strength, crimpled steel fibers + polypropylene fibers CSF + PF (1.2% +1.2%) is 21% more than the control specimen. The split tensile strength is 32.21% more for the crimpled steel fibers + polypropylene fibers CSF + PF (1.2% +1.2%) specimen when compared to the control specimen, and the flexural test impli
Bone formation is a highly energy-demanding process that can be impacted by metabolic *** has been considered the principal substrate for osteoblasts,although fatty acids are also important for osteoblast ***,we repor...
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Bone formation is a highly energy-demanding process that can be impacted by metabolic *** has been considered the principal substrate for osteoblasts,although fatty acids are also important for osteoblast ***,we report that osteoblasts can derive energy from endogenous fatty acids stored in lipid droplets via lipolysis and that this process is critical for bone *** such,we demonstrate that osteoblasts accumulate lipid droplets that are highly dynamic and provide the molecular mechanism by which they serve as a fuel source for energy generation during osteoblast *** cytoplasmic lipolysis leads to both an increase in lipid droplet size in osteoblasts and an impairment in osteoblast *** fatty acids released by lipolysis from these lipid droplets become critical for cellular energy production as cellular energetics shifts towards oxidative phosphorylation during nutrient-depleted *** vivo,conditional deletion of the ATGL-encoding gene Pnpla2 in osteoblast progenitor cells reduces cortical and trabecular bone parameters and alters skeletal lipid ***,our data demonstrate that osteoblasts store fatty acids in the form of lipid droplets,which are released via lipolysis to support cellular bioenergetic status when nutrients are *** in this process result in impairment of bone formation,specifically reducing ATP production and overall osteoblast function.
Indoor thermal comfort is essential as it improves living *** scenarios of personnel are in the process of a dynamic *** most interior spaces with fixed working stations,people directly blown by cold air have a poor t...
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Indoor thermal comfort is essential as it improves living *** scenarios of personnel are in the process of a dynamic *** most interior spaces with fixed working stations,people directly blown by cold air have a poor thermal ***,to meet the differentiated environmental demands,one challenge is to explore novel ventilation strategies to satisfy the changing environmental *** adaptive strategy,multi-vent module-based adaptive ventilation(MAV),was designed to increase the adjustability of air distribution and better adapt to variable demands.A classroom was chosen as a representative model with multiple scenarios during its *** were conducted to verify the three-level control effect of MAV on improving the thermal *** results revealed that different vent solutions create different airflow patterns and thermal environments,which can be matched to the *** scale for ventilation efficiency No.4,which measured the influence scope of supply air,was used to evaluate the zoning division control in *** space under the charge of a concerned MAV module showed a higher SVE4 than that at other *** implied that the zoning division can be effectively *** comfort measured using the air diffusion performance index,predicted mean vote,and draught rate showed that the application of MAV is better than that of the fixed MV mode,and the discomfort experienced when exposed to cold air can be *** is believed that these results will help extend the research of adaptive ventilation strategies.
The product testing process in the electronics industry is an essential part that verifies the product's quality before it is delivered to the customer. However, the workforce often has limited knowledge and skill...
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The symbiotic interaction between people and computers in the realm of software development is experiencing a fundamental transition, spurred by improvements in Natural Language processing (NLP). This study investigat...
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At present, high energy-consuming industrial loads such as fused magnesium, industrial manufacturing, and high-tech development have the characteristics of large energy consumption and peak control in the power conver...
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ISBN:
(纸本)9798350353563
At present, high energy-consuming industrial loads such as fused magnesium, industrial manufacturing, and high-tech development have the characteristics of large energy consumption and peak control in the power conversion process. Accurate load forecasting is needed to carry out reasonable production scheduling. In the process of electro motor magnesium smelting, the power load usually has the characteristics of non-stationary, non-periodic, high fluctuation, etc. It makes power load forecasting and scheduling extremely difficult. Therefore, a weighted integrated forecasting method is proposed in this paper for high energy-consuming loads based on variational mode decomposition (VMD) and reconstruction. Firstly, an integrated forecasting model based on a decomposition strategy is established. The original sequence of high energy-consuming loads is decomposed by the VMD method. The multiple models are used to predict and reconstruct the sub-sequences, which improved the forecasting accuracy of the load sequence of fused magnesium by the traditional single model. Secondly, the multi-objective parameter optimization method of the weighted integrated forecasting model is proposed to learn multi-angle sequence implicit information and avoid the influence of the hybridization of the decomposed sequence information. The weight combination is optimized by a multi-objective optimization algorithm, and the accuracy and robustness of the model are optimized simultaneously with MAE and EVS as the optimization objectives. Finally, through the Pareto optimal solution method of adaptive variance risk threshold, the robustness of the model is taken as the constraint condition. The results show that the weighted combination model shows excellent forecasting performance on subsequences with different frequency characteristics. At the same time, the proposed weighted integrated forecasting method scientifically adjusts the combined weights of each model based on multi-objective parame
Remanufacturing of aero-engine blade components is vital for sustainability and cost-efficiency in aerospace and energy industries. These types of products are sometimes damaged during use but may be successfully repa...
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Owing to the rapid increase in industrialization and population, global energy demand is at an extreme, whereas traditional fossil fuels such as coal, natural gas and oil, etc. are quickly exhaust. It is predicted tha...
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In this study, the primary stability of two widely used imported dental implants in the Iranian market, referred to here as Implant A and Implant B, was investigated and compared. This comparison was conducted through...
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The textile industry supply chains (SC) face numerous risks and disruptions due to the changing dynamics of high demand and limited resources. The impact of epidemics and regional conflicts further complicates global ...
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