Starting from the influencing parameters of threshing and separation implicit seed losses that occur within this process, paper searched for identified optimal regimes to minimize depending on process parameters. The evacuation (pev) depend rotor speed (n) peripheral (vp), material feed (va), space between counter-rotor (δ), flow (Q), density (ρ), length apparatus (L). As ρ L are constant, variation in relation each arguments was followed: vp, Q, ρ, va, respectively, minimization by loss...

In the context of agricultural soil degradation caused by extensive use chemical amendments, ecological alternatives with minimal detrimental impact on ecosystems are gaining popularity. Recent advancements in processing technologies have improved quality and extraction efficiency bioactive compounds, particularly when multiple conventional or innovative techniques being used to potentially overcome most common limitations. This paper proposes development testing a hybrid technology design...

In agrotechnical practice, it was found that between qualitative indices, which express the sowing precision achieved by planters determined in laboratory, and those under operating conditions, there are certain differences, sometimes quite significant. The decrease value of quality indices manifested increase number mistakes, either double planting holes (with at least two seeds), or missing holes. Both cases unfavorable for agricultural producer, generating production losses. This paper...

The paper presents a mathematical model that characterizes the process of threshing and separation from machine with an axial flow thresher, taking into account following input parameters: material flow, rotor speed, distance between counter rotor, mean density processed material, feed length thresher separating surface. Output parameters, such as distribution function separated seeds, seeds free in space, well unthreshed together value evacuation losses, were used to control modeling process.

Lavender is among the medicinal and aromatic plants with high economic value in food, pharmaceutical, cosmetic aromatherapeutic industries, its composition has numerous compounds, such as tannins, anthocyanins, minerals, saponins, flavonoids, polyphenols, essential oil others. The qualitative quantitative characteristics of lavender are best highlighted by extraction techniques hydrodistillation, steam distillation supercritical CO2 extraction. In water method, soaked until boiling released,...

Taking into consideration the current trend to mitigate agriculture’s negative impact on environment, this implies using new technologies and equipment for performing agricultural works. Currently, most used in agriculture is tractor with heat engine. One alternative represented by electric motors, usually powered batteries. The main advantage environment that zero emissions are released atmosphere during Another consists of nominal torque which could be sustained from almost revolutions...

This paper presents theoretical and experimental research studying the influence of process parameters on quality biomass pellets. A validated mathematical model was developed, expressing density pellets as determined by moisture content, compression pressure, heat, initial material, pelleting speed volume material. The experiments for determining these into optimizing were conducted a heated single pellet device, using fir sawdust raw To describe study process, four input control varied—raw...

The aim of the study was to identify new mathematical models and strategies that can characterize behavior pollutants accumulating in soil over time, considering special characteristics these chemicals cannot be degraded or destroyed easily. paper proposes a statistical model for assessing accumulation Zn lettuce (Lactuca sativa L.), based on three indicators development plants time. experimental data used obtain interpolated variations mass increase functions determine several express time...

Rotary seed sorters used for wheat processing show some functional advantages in eliminating persistent contaminants, especially due to the more aggressive treatment applied processed material. The objective of this paper was design a new constructive subassembly that would increase performance rotary extracting various contaminants from seeds. By testing pilot stand reproduces operation professional equipment and developing mathematical models fits main operating parameters, it possible...

Heavy metals are naturally occurring elements, but their various applications have led to wide circulation in the environment, raising concerns over latent effects on environment and human health. Their toxicity depends numerous factors, including chemical species, concentration of heavy metal ions, environmental etc. Experimental studies single or cumulative plants complex, time consuming difficult conduct. An alternative is mathematical modeling, which can include different factors into an...

The way we obtain our energy occupies an important place within the efforts to reduce pollution and climate changes.Currently, still comes mainly from fossil fuels, which release greenhouse gases when they are combusted produce energy.Due inevitable depletion of fuels increased requirements caused by rapid growth population in last fifty years, it was necessary find alternative sources energy.One most is biomass (wood, straws, sawdust, husk, branches, etc.).Biomass pelleting has become one...

Modeling the threshing and separation process involves application of a method description, analysis analytical determination system performance: apparatus - working process. The modeling separating seeds passing through an axial flow device was performed taking into account that function ss(x) is given depending on length apparatus. Then, models were made to describe variation percentage (cumulative) separated ss (x=L), corresponding modification functional parameters (depending peripheral...

This article presents the way to obtain structural model for elementary linear-elastic static analysis of equipment prepare germinative bed in strips main resistance structure.Also, prove functionality obtained, results linear elastic test are presented.These useful estimating safety factor and assessing behaviour major overstress situations at part machine.Structure dynamics is a very broad discipline that uses huge arsenal theoretical experimental methods solve fundamental problem...

Vibrations are dynamic phenomena occurring in elastic or quasi-elastic media after a local excitation and becoming manifested by propagating the within medium form of some oscillations. Thus, depending on phenomenon dynamics, there can be met vibrations with low variation frequencies, characteristic to mechanical structures, structures constructions earthquake waves, as well high frequencies. The vibration measuring is performed straw cereal harvesting machine an axial threshing apparatus...

The benefits of biofuels, compared to traditional fuels, target higher energy security, lower environmental impact, financial savings and socio-economic related the rural sector.The concept sustainable development embodies idea inter-connectivity balance between economic, social concerns.Materials with lignocellulosic structure (wood, straws, stalks, etc.) represent important renewable resources.Their main disadvantage consists in fact that they have very low bulk density, which leads...

Studies and research carried out on seed meters of precision planters whose operating principle is based the depression / suction air created during work by exhauster (vacuum generator) in vacuum chamber have role helping to improve their performance. With advancement sowing technology, emphasis ability accurately consistently distribute seeds soil increases. The singularization means distance along channels opened coulter essential ensure achievement maximum yield crop sown a certain area...

Aquaculture, as a dynamic field, undergoes continuous evolution requiring improvements in efficiency and new research efforts. Estimating fish biomass is an essential practice the field of precision aquaculture, obtaining periodic information on has been identified urgent need, considering objective optimizing daily feeding, controlling density finally determining optimal timing harvesting. Conventional weighing methods, which often rely manual procedures, have inherent challenges. Manual...

This paper explores hydroponic vertical systems as a sustainable solution to modern agricultural challenges, particularly those posed by climate change. Hydroponics, method of growing plants without soil using nutrient-rich water solutions, offers significant advantages over traditional farming. Vertical maximize space efficiency in stacked layers, making them ideal for urban environments with limited space. These provide controlled environment that mitigates the impacts extreme weather,...

This article presents the results of experimental research on extraction polyphenols from nettle, lavender, and sage using percolation method. technique is recognized for its efficiency in extracting bioactive compounds plants. Polyphenols are a group natural chemical characterized by presence multiple phenolic groups their molecular structure. They predominantly found plants various industries, including agriculture, antioxidant, antimicrobial, antifungal properties. The antioxidant...

Enhancing the efficacy of biofertilizers and biopesticides for horticultural applications presents numerous challenges, given need to balance effectiveness with environmental economic factors. Achieving these goals requires rigorous research into advanced technologies formulations capable effectively replacing or complementing traditional chemical inputs, without compromising crop yield quality. The present study aimed develop a versatile yet accessible hybrid percolation–sonication system...

The use of UAV (Unmanned Aerial Vehicle) technology or drones in the monitoring vineyards and orchards offers multiple benefits, improving monitoring, management, productivity crops. main goal this study was to implement a cost-effective integrated that includes necessary hardware software elements for analyzing health growth agricultural crops general, with particular focus on orchards. Based analysis, agronomists, experts field, ordinary farmers can appropriate management measures, such as...

The research aims to estimate the influence of main vibration sources in grain harvesters on combine operator. study also has a comparative aspect, including two harvesters, conventional one (C 110H) and with an axial flow (CASE IH). considered were thresher, chassis, header for both types addition shaker as source harvester. receiver is be operator's seat. emission spectra each are recorded according ISO 2631-1:2001 2631-5:2018, well spectrum received at To seat, interspectral correlations...