Results 71 to 80 of about 115,231 (195)

Spray deposition characteristics of multi-rotor UAVs equipped with centrifugal nozzles on typical field crops

Smart Agricultural Technology
With the rapid progress in unmanned aerial vehicle (UAV) technology, fields have become the primary application scenarios for spraying. However, research on integrating centrifugal nozzles in UAV spraying applications remains insufficient.
Weixiang Yao, Yu Chang, Yuzhou Liu, Boli Xing, Hao Yan, Mujun Sun, Chunling Chen, Yubin Lan   +7 more
doaj   +1 more source

Quantitative computational fluid dynamic analyses of oil droplets deposition on vaneless diffusor walls of a centrifugal compressor

Energy Science & Engineering, 2020
In the vehicle turbocharger operating process, the diffusor walls are susceptible to oil droplet deposition. This deposition may cause deterioration in the diffusor flow performance, consequently resulting in the deterioration of compressor performance ...
Liwei Sun, Chaochen Ma, Panpan Song, Hang Zhang   +3 more
doaj   +1 more source

Altering the coffee-ring effect by adding a surfactant-like viscous polymer solution

Scientific Reports, 2017
A uniform deposition of the suspended particles in an evaporating droplet is necessary in many research fields. Such deposition is difficult to achieve, because the coffee-ring effect dominates the internal flow in a droplet.
Changdeok Seo, Daeho Jang, Jongjin Chae, Sehyun Shin   +3 more
doaj   +1 more source

Study on Spray Evaluation: The Key Role of Droplet Collectors

Agronomy
Droplet collectors are commonly utilized to gauge the effect of pesticide deposition on crops. However, the varying surface characteristics of these collectors can lead to disparate data outcomes.
Miao He, Peng Qi, Leng Han, Xiongkui He
doaj   +1 more source

Fungicide application technology for controlling the sugarcane orange rust [PDF]

, 2019
With the epidemic onset of the sugarcane orange rust, fungicide applications of the Strobilurins and Triazoles groups have become necessary in susceptible varieties.
Alves, Guilherme Sousa, Alves, Thales Cassemiro, Rodrigues da Cunha, João Arantes, Silva, Sérgio Macedo, Tavares, Rafael Marcão   +4 more
core   +1 more source

Spatial Variability in the Deposition of Herbicide Droplets Sprayed Using a Remotely Piloted Aircraft

AgriEngineering
In this study, we evaluated the spatial variability in droplet deposition in herbicide applications using a remotely piloted aircraft (RPA) in pasture areas. The investigation was conducted in a square grid (50.0 m × 50.0 m), with 121 sampling points, at
Edney Leandro da Vitória, Luis Felipe Oliveira Ribeiro, Ivoney Gontijo, Fábio Ribeiro Pires, Aloisio José Bueno Cotta, Francisco de Assis Ferreira, Marconi Ribeiro Furtado Júnior, Maria Eduarda da Silva Barbosa, João Victor Oliveira Ribeiro, Josué Wan Der Maas Moreira   +9 more
doaj   +1 more source

Numerical Simulation and Validation of Droplet Deposition on Tomato Leaf Surface under Air-Assisted Spraying

Agronomy
The interaction between the leaf and airflow directly influences droplet deposition on the leaf surface. This paper investigates the effect of this interaction on droplet deposition.
Ze Liu, Jian Chen, Jili Guo, Baijing Qiu
doaj   +1 more source

Western corn rootworm pyrethroid resistance confirmed by aerial application simulations of commercial insecticides [PDF]

, 2019
The western corn rootworm (Diabrotica virgifera virgifera LeConte) (WCR) is a major insect pest of corn (Zea mays L.) in the United States (US) and is highly adaptable to multiple management tactics.
Fritz, Bradley K., Hoffmann, Wesley C., Kruger, Greg, Meinke, Lance J., Peterson, Julie A., Souza, Dariane, Vieira, Bruno C.   +6 more
core   +1 more source

Size-selective nanoparticle growth on few-layer graphene films

, 2010
We observe that gold atoms deposited by physical vapor deposition onto few layer graphenes condense upon annealing to form nanoparticles with an average diameter that is determined by the graphene film thickness.
Adam S., Ashcroft N. W., Cross C. E., Daniel M. C., Datta S. S., Evans E. L., Ferrari A. C., Filleter T., Graf D., Guinea F., Katsnelson M. I., McCann E., Novoselov K. S., Ohta T., Penner R. M., Ratke L., Shan B., Tyson W. R., Zhou S. Y.   +18 more
core   +2 more sources

Evaluation of UAV spraying quality based on 1D-CNN model and wireless multi-sensors system

Information Processing in Agriculture
The droplet deposition is a key index to evaluate the quality of unmanned aerial vehicle (UAV) spraying. The detection of the droplet deposition is time-consuming and costly, therefore, it is difficult to achieve large-scale and rapid acquisition in the ...
Ziyuan Hao, Minzan Li, Wei Yang, Xinze Li   +3 more
doaj   +1 more source