No-tillage seeding is of great significance for adjusting and improving soil structure in Northeast China. The conventional no-tillage seeder faces several issues with its row cleaner, such as a low straw cleaning rate high working resistance. To address these problems, this paper utilizes the bionic design method develops elastic cleaner inspired by motion behavior mole excavation. includes bent teeth torsion spring lateral throwing. MBD–DEM coupled simulation technology proposed...

This paper proposes an adaptive bipartite secure consensus asymptotic tracking control scheme based on event-triggered strategy for the nonlinear multi-agent systems (MASs) under denial-of-service (DoS) attacks. First, by incorporating concept of shortest path into hierarchical algorithm, problem in presence unbalanced communication topology is successfully addressed. Further, anti-attack designing improved forms errors and virtual controllers proposed DoS Then, a modified mechanism relative...

Aiming at the common problems of high working resistance, low soil disturbance, and rates missed extraction in operation carrot combine harvesters, a high-efficiency drag-reducing bionic soil-loosening shovel was designed this study. The physical parameters carrots were measured, using badger claw toe as prototype. wing structures designed. Based on EDEM discrete element simulation technology, multi-element model shovel–soil–carrot contact established to determine effects operating speed...

Climate warming poses a significant threat to China’s national food security as grain production encounters the daunting challenge of climate change. Thus, promoting shift agriculture toward climate-smart practices has become an inevitable choice. This study investigated (CSA) using agricultural and environmental indicators that affect technical efficiency farming in Northeast China. The employs stochastic frontier analysis approach estimate function highlight factors efficiency. entropy...

In sports medicine, tendon and ligament injuries are the most prevalent conditions, with booming of competition, incidence is gradually increasing, investigating more potent therapeutic options therefore becoming increasingly crucial. Platelet-rich plasma therapy has gained popularity as an effective secure treatment in recent years. Currently, a faceted systematic clear visual analysis lacking this research area.The literature related to using platelet-rich treat from 2003 2022 core dataset...

The prediction of crop yield plays a crucial role in national economic development, encompassing grain storage, processing, and price trends. Employing multiple sensors to acquire remote sensing data utilizing machine learning algorithms can enable accurate, fast, nondestructive for maize crops. However, current research heavily relies on single-type traditional methods, resulting the limited robustness models. To address these limitations, this study introduces field-scale model named...

Preharvest threshing is a harvesting method that focuses on collecting rice grains while leaving the straw unharvested. Investigating interaction mechanism between machine and during operation process its correlation with harvest losses crucial for enhancing quality. In this study, structural design operational analysis of combs was conducted through theoretical analysis. By extracting relevant parameters plants, model entire-plant period established based discrete element (DEM). Numerical...

Agricultural farming problems are the main concerns for states and local governments in stabilizing increasing food production. mechanization is an important element this scenario. Thus, we conduct a systematic analysis to examine agricultural level its effect on grain production by using panel data scientific literature mining last two decades northeastern China. For purpose, autoregressive distributed lag model, stochastic frontier bibliometric employed. The results show that development...

Liquid fertilizer has many advantages, such as low production cost and little environmental pollution. open furrow strip application method is widely used in operation. The core-share opener a high operational resistance, disturbing the soil, hurting crop roots, causing liquid to volatilize deteriorating fertilization effect. In this study, based on streamline curve of sturgeon body, we designed several bionic deep openers by combining bionics analyzed effects under different operating...

Given the problems of targeted variable deep application liquid fertilizer in field, such as low precision, inaccurate fertilization amount, and poor effect, a control system based on fuzzy PID algorithm was designed this study to realize combination precise technology deep-fertilization technology. Specifically, equipment adaptive strategy were first. Then, mathematical model established following requirements intertillage corn crops. Afterward, response time overshoot simulated through...

Abstract Green roofs are a sustainable, low-impact development technique. They can reduce peak stormwater runoff and volume improve the quality of from individual buildings developments, which lower risk frequent urban flooding receiving waters. Few studies have compared different types green roof models under same rainfall intensities; thus, in this study, predictions non-linear storage reservoirs model, Storm Water Management Model (SWMM), physical process model (HYDRUS-1D) were discussed....

Total reflection X-ray fluorescence (TXRF) has been widely considered as an effective analytical tool for the analysis of a great variety type polymetallic deposits, because it many advantages extremely high sensitivity, accuracy, minor sample preparation, and ability multielement simultaneous analysis. Sample preparation is quite important TXRF quantitative Since pretreatment factors, such amount, dispersant type, particle size physicochemical properties, are seriously impact accuracy...

Weeds compete with rice for sunlight and nutrients are prone to harboring pathogens, leading reduced yields. Addressing the issues of low weeding efficiency weed mortality rates in existing inter-row devices, study proposes design a combination paddy field wheel. The device’s operation process is theoretically analyzed based on control requirements northeastern region China, determination specific structural parameters. This research conducted experiments mechanical properties cutting obtain...

Carrots are a type of vegetable with high nutrition. Before entering the market, surface defect detection and sorting carrots can greatly improve food safety quality. To detect defects on surfaces during combine harvest stage, this study proposed an improved knowledge distillation network structure that took yolo-v5s as teacher lightweight replaced backbone mobilenetv2 completed channel pruning student (mobile-slimv5s). make adapt to image blur caused by vibration carrot harvester, we put...

Deep application of liquid fertilizer is a technique that applies deep near the root system crops, which has many advantages such as high utilization rate and low environmental pollution. However, power specific energy consumption caused by soil-engaging components in make it difficult to popularize northeast China. The claw-toe structure burrowing animals characteristics resistance friction, been focus scholars’ research on components. badger, widely distributed animal China, good...

To solve the problems of high rhizome damage and low net cutting during carrot combine harvesting, following research was performed. The designed stem- leaf-cutting device taken as object, a bionic design idea adopted. MATLAB software used to extract optimize tibial curve mantis forelimb, its shape applied edges single-disc rotating cutter straight fixed cutter, whose key structural parameters were determined. kinematic dynamic models stems, leaves established explore critical conditions...

It is difficult to determine the coefficient of restitution accurately due small size, light weight, and complex influencing factors rice grain. In study, experimental principle was described by impact method, coefficients four typical varieties in Northeast China were measured. According orthogonal experiment, primary secondary affecting grain collision material, spring compression (initial velocity), moisture content, variety. A single factor test carried out for significant factors,...

In this article, a novel distributed prescribed-time consensus tracking control strategy is presented for heterogeneous nonlinear multi-agent systems (MASs) under deception attacks and actuator faults. Since the original states of studied system are unavailable attacks, we present new coordinate transformation technique considering compromised outputs command filters to design corresponding controller. Then, handle unknown gains caused by faults, rational adaptive laws cleverly designed...