Coupling capillary electrophoresis to mass spectrometers through the Agilent triple tube coaxial sheath-fl ow sprayer is a widely used confi guration due to its simplicity, versatility, and robustness. This Technical Overview shows that with the Jet Stream source and the latest version of the CE/MS sprayer, this approach can now also be used in combination with the proprietary Agilent Jet Strea...

A new, more robust sprayer for desorption electrospray ionization (DESI) mass spectrometry imaging is presented. The main source of variability in DESI is thought to be the uncontrolled variability of various geometric parameters of the sprayer, primarily the position of the solvent capillary, or more specifically, its positioning within the gas capillary or nozzle. If the solvent capillary is ...

The flow of air generated by a new design of air assisted sprayer equipped with two axial fans of reversed rotation was analyzed. For this goal, a 3D sonic anemometer has been used (accuracy: 1.5%; measurement range: 0 to 45 m/s). The study was divided into a static test and a dynamic test. During the static test, the air velocity in the working vicinity of the sprayer was measured considering ...

An image processing-based variable rate chemical sprayer for disease and pest-infested coconut plantations was designed and evaluated. The manual application of chemicals is considered risky and hazardous to workers, and provides low precision. The designed sprayer consisted of a sprayer frame, motors, a power system, a chemical tank and pump, a crane, a nozzle with a remote monitoring system, ...

An experimental machine vision-based patch-sprayer was developed. This sprayer was primarily designed to do real-time weed density estimation and variable herbicide application rate control. However, the sprayer also had the capability to do high-resolution weed mapping if proper mapping techniques being integrated. Two weed mapping methods were developed. One is GPS signal-based off-line weed ...

An Ultra-Low Volume (ULV) sprayer was developed to decrease carrier volume required for pesticide applications in row and turfgrass cropping systems. The ULV sprayer can make spray applications at or below 19 L ha-1 , which is far lower than a conventional sprayer in row crop or turfgrass production systems. Field studies were Facility near Mead, NE to compare the ULV sprayer to a conventional ...

Spray boom vibrations are one of the main causes uneven distribution agrochemicals. Using active suspension to maintain correct height nozzles is critical for obtaining a uniform spray pattern and minimizing possibility drift. However, electro-hydraulic pendulum has nonlinear uncertain factors such as parameter uncertainties, external disturbances, model error, etc., which complicate design con...

Based on the survey data, study has made yield and profitability comparisons in contexts of modern agricultural production technologies adopted by cotton growers district Bahawalpur. The extent adoption was gauged through constructing a farming index (MFI). points scored regarding MFI, were classified into five categories. By applying independent samples t-test, means between adopters non-adopt...