This paper postulates that the effect of e-commerce on firm performance is not direct and needs to be examined using mediating factors. The Ordinary Least-Squares (OLS) model was employed with data Flash Eurobarometer 439 Survey entitled Use Online Marketplaces Search Engines by small medium enterprises. obtained findings provide support for hypothesis. To more precise, while relationship between negative, it positively mediated certain types internet sales channels. In particular, benefits...

This study explores the effect of alkali treatment at ambient (25 °C) and elevated temperatures (100 on physicochemical, structural, morphological, thermal properties Calamus tenuis cane fibers (CTCFs) for first time. Our purpose is to investigate their potential use as reinforcement in polymer composites, since are generally known accurate consistent geometrical orientation. Treatment with 8% (w/v) sodium hydroxide (NaOH) carried out temperature 100 °C 4 h. Chemical analysis Fourier...

With the growing concerns over environmental degradation and increasing demand for sustainable materials, eco-friendly composites have gained considerable attention in recent years. This review paper delves into promising realm of seed-based fillers, reinforcements polysaccharidic matrices production biocomposites that are yet focusing on those seeds, which can be considered industrial process waste. Seeds, with their inherent mechanical properties biodegradability, often waste systems,...

Natural and renewable sources of calcium carbonate (CaCO3), also referred to as "biogenic" sources, are being increasingly investigated, they generated from a number waste in particular those the food industry. The first obvious application biogenic is production cement, where CaCO3 represents raw material for clinker. Overtime, other more added-value applications have been developed filling modification properties polymer composites, or development biomaterials, it possible transform into...

The ability to accurately predict the mechanical properties of metals is essential for their correct use in design structures and components. This even more important presence materials, such as metal cast alloys, whose can vary significantly relation constituent elements, microstructures, process parameters or treatments. study shows how a machine learning approach, based on pattern recognition analysis experimental data, able offer acceptable precision predictions with respect main metals,...

The use of light composites when designing fast moving parts for machine tools is emerging as a very efficient solution improving productivity. Nevertheless, several aspects these materials have to be carefully considered in woodworking. This paper aims investigate the effect interleaved nanofiber on mode I interlaminar properties and failure modes that occur this mode. For purpose, woven carbon/epoxy laminates with without Polyvinylidene difluoride nanofibers mid-plane were subjected...

Modelling and simulating complex systems, such as forestry equipment, are often the only way for their full analysis design. This problem may lead to a stiff set of equations that followed by numerical problems. In this paper two alternative approaches investigated. The first one refers use variable step integration continuous models adjusted fastest processes. second approximation fast transitions ideal instantaneous mode-transitions hybrid models. These analysed in framework bond graph....

The present experimental investigation is aimed at modeling the falling weight impact properties of thermosetting composites produced using a partially bio-based vinylester resin with flax and basalt fibers them both in hybrid configuration, therefore obtaining three different types laminates, fabricated by hand lay-up infusion. Cure processes were accelerated controlled applying heat pressure autoclave. After acquiring tensile flexural data, tests carried out several energies up to 40J, so...

Drone images from an experimental field cropped with sugar beet a high diffusion of weeds taken different flying altitudes were used to develop and test machine learning method for vegetation patch identification. Georeferenced combined hue-based preprocessing analysis, digital transformation by image embedder, evaluation supervised learning. Specifically, six the most common algorithms applied (i.e., logistic regression, k-nearest neighbors, decision tree, random forest, neural network,...

In recent years, there has been growing interest in utilizing bark fibers as reinforcements for polymer composites. This study focused on the characterization of epoxy composites reinforced with Acacia caesia (ACB) fibers, considering their mechanical, morphological, and thermal properties. Various amounts ACB three different lengths (10, 20, 30 mm) were incorporated into composites, ranging from 10 to 35 wt.% 5% increments. resulted 18 sample categories, which compared neat samples. The...

The aim of the present experimental investigation was to perform a comparative analysis concerning influence on mechanical properties natural fibers and/or bio-resins in reinforced thermoset composites. Flax and basalt were selected as reinforcements, single constituents or hybrid combination. Glass synthetic used for comparison. Eco-friendly matrixes, both epoxy vinylester, considered compared with composites based traditional resins. Samples fabricated by hand lay-up resin infusion...

The contrast between modern mobility alternatives and the seek for sustainability has been an essential concern industry in last decades, boosted by technologies that have progressively narrowing this gap. Among them, solar cars represent a contemporary trend to supply need. Given complexity embraced technology, attainment of efficient design demands improvement every aspect vehicle, including its mechanics. Performing critical role on vehicle's stability, suspension system is thoroughly...