نتایج جستجو برای: potassium hydroxide koh

تعداد نتایج: 92112  

Journal: :Annals of optometry and contact lens 2023

Purpose: To report a successfully treated case of corneal ulcer caused by <i>Kocuria kristinae</i> in post penetrating keratoplasty state using topical empirical antibiotics.Case summary: The 63 years old patient who posted with 0.5% loteprednole complained eye foreign body sensation and mild ocular pain. There were edematous cornea, erosion, epithelial defect. Gram staining, potass...

Journal: :Journal of Molecular Liquids 2021

A low-cost Transition Temperature Mixture (TTM) has been synthesized by mixing ethylene glycol and potassium hydroxide as a new non-aqueous CO2 sorbent. Boric acid added to ensure the reversibility of system small amount water modulate viscosity optimize performances. The resulting mixtures have characterized in terms viscosity, conductivity density over temperature (therefore ionicity via Wald...

1999
Michael Schmidt Andreas Bauer Annette Schier Hubert Schmidbaur

Beryllium succinate dihydrate [Be(C4H4O4)](H2O)2 is formed in the reaction of equimolar quantities of beryllium sulfate, succinic acid and barium hydroxide in aqueous solution at pH 3.2. Sodium, potassium, and ammonium bis(succinato)beryllates M2[Be(C4H4O4)2] are obtained using the same reagents in the molar ratio 1:2:1 and adjusting the pH to 6.3-6.5 with NaOH, KOH or concentrated aqueous ammo...

Journal: :Processes 2021

Biorefinery, which utilizes carbon-neutral biomass as a resource, is attracting attention significant alternative in modern society confronted with climate change. In this study, spent coffee grounds (SCGs) were used the feedstock for lactic acid fermentation. order to improve sugar conversion, alkali pretreatment was optimized by statistical method, namely response surface methodology (RSM). T...

Journal: :IOP conference series 2023

Abstract An approach to removing crystal violet (CV) dye from aqueous solutions was investigated by nano porous carbon (NC) derived vinasse waste. The NC prepared via pyrolysis carbonization and potassium hydroxide chemical activation process. characterized TGA, FTIR, BET analysis. optimal condition of the used adsorb CV in at room temperature. Different initial concentrations contact times wer...

2014
Hirokazu Nakayama Aki Hayashi

The immobilization of potassium sorbate, potassium aspartate and sorbic acid in layered double hydroxide under solid condition was examined. By simply mixing two solids, immobilization of sorbate and aspartate in the interlayer space of nitrate-type layered double hydroxide, so called intercalation reaction, was achieved, and the uptakes, that is, the amount of immobilized salts and the interla...

2006
Juergen Puls Ron Janzon Bodo Saake

Xylans were selectively removed from paper grade pulps by nitren extraction in order to produce dissolving pulps. The impact of nitren charge on the removal of hemicelluloses was demonstrated for a birch and mixed softwood kraft pulp. The 95% purity level could easily be reached for the birch kraft pulp. Softwood glucomannans were almost insoluble under the investigated extraction conditions ap...

2007
MUHAMMAD SAEED AKRAM HABIB-UR-REHMAN ATHAR MUHAMMAD ASHRAF

An experiment was conducted to assess whether KOH applied as a foliar spray could mitigate the adverse effects of salt stress on plant growth and yield of sunflower plants. For this purpose, KOH @ 0, 0.5, 1.0, 1.5 and 2.0% was applied as a foliar spray to salt stressed and non-stressed sunflower plants. Foliar spray of KOH increased the growth and yield under non-stress and salt stressed condit...

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