Search results
Results from the WOW.Com Content Network
A respiratory droplet is a small aqueous droplet produced by exhalation, consisting of saliva or mucus and other matter derived from respiratory tract surfaces. Respiratory droplets are produced naturally as a result of breathing, speaking, sneezing, coughing, or vomiting, so they are always present in our breath, but speaking and coughing ...
Droplet-based microfluidics often operate under low Reynolds numbers to ensure laminar flow within the system. [2] Droplet size is often quantified with coefficient of variation (CV) as a description of the standard deviation from the mean droplet size. Each of the listed methods provide a way to generate microfluidic droplets in a controllable ...
The term droplet is a diminutive form of 'drop' – and as a guide is typically used for liquid particles of less than 500 μm diameter. In spray application , droplets are usually described by their perceived size (i.e., diameter) whereas the dose (or number of infective particles in the case of biopesticides ) is a function of their volume.
Acoustic droplet ejection, move of fluid drops without any physical contact by means of ultrasound; Droplet-shaped wave, casual localized solutions of the wave equation; Electrodynamic droplet deformation, liquid droplets suspended in a liquid exposed to an oscillating electric field; Electron-hole droplets, condensed phase of excitons in ...
Microfluidic techniques such as droplet microfluidics, paper microfluidics, and lab-on-a-chip are used in the realm of food science in a variety of categories. [134] Research in nutrition, [ 135 ] [ 136 ] food processing, and food safety benefit from microfluidic technique because experiments can be done with less reagents.
Droplet nuclei are formed by the "dried residua of larger respiratory droplets". [2] These particles are "the vehicle for airborne respiratory disease transmission, which are the dried-out residual of droplets possibly containing infectious pathogens". [3] Diseases such as tuberculous and COVID-19 can be transmitted via droplet nuclei. [2] [4]
The droplet is moved to an electrode with a magnet on one side of the array with magnetic particles functionalized to bind to the analyte. Then it is moved over the electrode, the magnetic field is removed and the particles are suspended in the droplet. The droplet is swirled on the electrode array to ensure mixing.
In an equilibrium situation this is not possible as the minimum radius of a metal droplet is given by [4] = where V l is the molar volume of the droplet, σ lv the liquid-vapor surface energy, and s is the degree of supersaturation [5] of the vapor. This equations restricts the minimum diameter of the droplet, and of any crystals which can be ...