This study assessed the YOLO model’s effectiveness in identifying phytobiometric patterns of Macaúba (Acrocomia aculeata), specifically detecting and classifying immature fruits. Conducted at Fazenda Limeira, Lavras, Minas Gerais, Brazil, experiment used fruits from spontaneously grown palm trees a grazing area. Fruits were randomly selected, cleaned, stored for 48 hours shaded area before photographic recording biometric measurement. Performance analysis showed significant improvements,...

Brazil is the world’s largest sugarcane producer, with 45.71 million tons of sugar and 29.7 billion liters ethanol in 2023. To meet growing demand while addressing environmental concerns, mechanical harvesting demands new research area. This work took into account anisotropy heterogeneity stems. Base cutting was simulated using finite element method. For this, properties were obtained by common grade RB966928. The simulation based on a rotational speed 640 rpm angle 18° blade. results...

Rural roads and bridges are fundamental to outflow agricultural products promoting the local population mobility. In rural areas or forests, with scarce construction resources, common design using wood in order reduce demanded energy produce then. That kind of infrastructure systems, present low structural stiffness, durability reliability, due inherent mechanical properties variability hygroscopicity. this way, inspection, monitoring maintenance programs become extremely important. The...

In recent years, research and development in the automotive industry have increasingly focused on safety, comfort, energy efficiency. A crucial area of this is wheel/tire system, which vital ensuring vehicle safety drivability. This study examines effects various types loads applied to system. Furthermore, it assesses factor potential fatigue-related failures wheels, identifying areas with significant deformations displacements. The employs CAD CAE software analyze behavior utilizing Finite...

Background The mechanized harvesting and transportation of tomatoes can significantly impact their physicochemical characteristics, affecting quality industrial processing efficiency. This study aimed to evaluate the effects methods conditions on firmness, titratable acidity (TA), total soluble solids (TSS – °Brix), pH, percentage loss fresh mass (LFM) intended for use. Methods TA, TSS (°Brix), LFM in Results Mechanized reduced tomato increased loss. Manual resulted 29.7% greater firmness...

Este artigo propõe, de forma teórica, o InCode, uma plataforma apoio à programação destinada a pessoas neurodivergentes, com foco especial em indivíduos Transtorno do Espectro Autista (TEA). Fundamentado ampla revisão bibliográfica acerca da neurodiversidade, das tecnologias assistivas, dos princípios UX Design e gamificação, trabalho identifica carência ferramentas adaptadas que atendam às necessidades cognitivas sensoriais desses usuários. O InCode foi concebido para oferecer interface...

Fertilizer application at variable rates requires dense sampling to determine the resulting field spatial variability. Defining management zones is a technique that facilitates variable-rate of agricultural inputs. The apparent electrical conductivity soil an important factor in explaining variability physical-chemical properties. Thus, objective this study was define for coffee (Coffea Arabica L.) production fields based on soil. resistivity method used measure conductivity. Soil samples...

Mechanical harvesting can be considered an important factor to reduce the costs in coffee production and improve quality of final product. Coffee machinery uses mechanical vibrations accomplish harvesting. Therefore, determination natural frequencies fruit-stem systems is essential dynamic parameter for development mechanized system by vibrations. The objective this study was develop a three-dimensional finite element model determine mode shapes systems, considering different fruit ripeness....

Precision agriculture that is based on the physical and chemical properties of soil requires a dense sampling to evaluate spatial variability in field. This often expensive time consuming. One technique reduce number samples define management zones information collected Some researchers have demonstrated importance electrical defining zones. Thus, objective this study was relationship between apparent conductivity mountainous areas coffee production. The evaluated at depths ranging from...

O método de elementos finitos tem sido empregado no projeto máquinas e para o estudo do comportamento dinâmico cafeeiro. Objetivou-se, neste trabalho, determinar as propriedades geométricas, físicas mecânicas sistema fruto-pedúnculo-ramo As dimensões foram determinadas por meio processamento imagens, massas os volumes mensurados utilizando-se balança proveta, respectivamente. Os módulos elasticidade determinados ensaios mecânicos compressão, tração flexão, frutos, pedúnculos ramos,...

The development of an efficient machine for harvesting coffee requires comprehensive knowledge the dynamic behavior plant and its parts. finite element method is a numerical approach used to determine natural frequencies mode shapes. However, stochastic has not been employed analysis coffee. aim shapes fruit-stem-branch system. were determined by employing method, in which elastic modulus specific mass treated as random variables, variation frequency was obtained function variability these...

ABSTRACT The present study evaluates the influence of level roasting and grind size on moisture content repose angle coffee during storage. Raw beans (Coffea canephora Coffea arabica), hulled dried, were roasted to two different levels: medium light (SCAA#65) moderately dark (SCAA#45). then ground into three sizes: fine (0.59 mm), (0.84 mm) coarse (1.19 mm). An additional lot was kept whole. Following grinding, samples stored at temperatures (10 30 ºC) analyzed after five storage durations...

Harvesting is one of the most important operations in coffee production systems. This operation has a high cost and impact on final quality product. To reduce costs, producers are looking for ways to mechanize this operation. machines generally detach fruits from plant by vibration and/or impact. The objective work was study effect amplitude frequency efficiency fruit harvesting. Vibration tests branches were performed laboratory using an electromagnetic shaker. amplitudes range 3.75 7.50 mm...

Detachment of coffee fruit is usually accomplished by means mechanical impacts and vibrations applied to the plant. Modal properties fruit-stem system represent important information for efficient selective harvesting. This study aimed determine modal parameters system, such as natural frequency damping coefficient, using high speed digital videos. With image processing techniques, it was obtained resulting displacement subjected an impulse. The were determined logarithmic decrement method,...

Parâmetros de qualidade podem alterar significativamente o preço do café; entretanto, a colheita seletiva dos frutos é frequentemente associada à boa produto, procedimento que pode ser realizado por meio vibrações mecânicas. Desta forma, estudo e avaliação efeito localizado fatores como frequência, amplitude grau maturação frutos, são fundamentais para construção máquinas adequadas este tipo prática. O trabalho foi desenvolvido com objetivo se avaliar os amplitude, maturação, direção...

An important factor for the evaluation of an agricultural system's sustainability is monitoring soil quality via its physical attributes. The attributes soil, such as penetration resistance, can be used to monitor and evaluate soil's quality. Artificial Neural Networks (ANN) have been employed solve many problems in agriculture, use this technique considered alternative approach predicting resistance produced by basic properties, bulk density water content. aim work perform analysis behavior...

ABSTRACT The development of efficient machines for the mechanical harvesting coffee plants requires use appropriate vibrational parameters. Thus, in order to detach less unripe fruits and decrease reharvesting, branch breakage defoliation, it is important choose frequency, amplitude vibration time. This study aimed at analyzing detachment efficiency from according parameters ripening stage. Fruit bunches were sampled green mature stages subjected vibration, using a system composed by signal...