water content


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water content 

Water in a contact lens expressed as a percentage of the total mass of the lens in its hydrated state under equilibrium conditions with physiological saline solution containing 9 g/l sodium chloride at a temperature of 20 ± 0.5ºC and with a stated pH value.
where M is the mass of hydrated lens, m is the mass of dry lens.The US Food and Drug Administration (FDA) has categorized hydrogel contact lenses into four groups according to their water content and their surface reactivity (referred to as ionic if it contains more than 0.2% ionic material, and nonionic otherwise). Group 1: water content less than 50% and non-ionic. Group 2: water content greater than 50% and non-ionic. Group 3: water content less than 50% and ionic. Group 4: water content greater than 50% and ionic.
References in periodicals archive ?
The results were attributable to the reducing effect of high soil water content on soil C[O.
Now the researchers have built a scaled-down version that enables them to study--in the laboratory--the influence of compaction on erosion processes, including soil water content and mechanical forces needed to increase soil density.
I know that its water content is constant before and after the extraction process, at approximately 8% and 10% respectively.
This paper describes how a neutron probe (NP) and a multi sensor capacitance probe (MCP) can be used for monitoring the soil water content in order to develop a soil water balance and to estimate the evapotranspiration (ETc) of an apricot (Prunus armeniaca L.
Measuring water content, temperature, and electrical conductivity is an essential part of commercial agriculture and environmental monitoring.
In this report, we examined the water content in a selection of alternative fuels and related compounds.
Water content is quantified by weight, volume, and equivalent surface area.
Delivery of intraocular lenses and glaucoma implant as follows: 01001 aspheric soft intraocular lens - monoblock with optical design to prevent the development of secondary cataracts, With filter for the harmful part of the blue spectrum of light, Material - acrylate / methacrylate copolymer / hydrophobic lens with a water content of 0.
The low ph, high sugar content, and low water content make it impossible for bacteria and fungi to survive," Dodd said.
However, most species have seeds that are classified as orthodox, which can tolerate desiccation untill the water content reduces to 2-5%, depending on the species.
To maximise fluid intake, opt for foods with high water content during Iftar and Suhoor.
Watermelon, the refreshing summer fruit with lots of water content minus fattening elements, is the hot buy fruit this season.