introduction: pragmates australis (pa) (common reed) is a riverside perennial grass found in wetlands throughout temperate and tropical regions of the world. pa grows in many wetlands around rivers in iran. animal feed restriction is the main problem of iranian animal production systems and this feed resource can be fed to native livestock especially in rural areas. ensiling pa could improve it...

A method is presented for the resolution of urinary 17-ketosteroids (17-KS) by gasliquid chromatography (GLC) for clinical application. Hot acid hydrolysis with sulfuric acid is followed by ether extraction, 1 N NaOH wash, and NaOH pellets to serve for both purifying and drying agent. All steps take place in the same re3ction tube and are adapted for mechanical shaking. The method allows one an...

Precipitation patterns emerging in a two-dimensional moving front are investigated on the example of NaOH diffusing into a gel containing AlCl3 . The time evolution of the precipitate Al(OH)_{3} can be observed since the precipitate redissolves in the excess outer electrolyte NaOH and thus it exists only in a narrow optically accessible region of the reaction front. The patterns display self-si...

The present work deals with enzymatic hydrolysis of sweet sorghum bagasse to fermentable sugars. The bagasse was treated with phosphoric acid and sodium hydroxide prior to enzymatic hydrolysis by commercial cellulase and β-glucosidase. The phosphoric acid pretreatment was performed at 50°C for 30 min, while 12% NaOH was used for the alkali treatment at 0°C for 3 h. The phosphoric acid pretreatm...

This study demonstrates a facile, mild and environmentally-friendly sustainable (soft processing) approach for the efficient electrochemical exfoliation of graphite using a sodium hydroxide/hydrogen peroxide/water (NaOH/H2O2/H2O) system that can produce high-quality, anodic few-layer graphene nanosheets in 95% yield at ambient reaction conditions. The control experiment conducted using NaOH/H2O...

Mass-selected Au clusters consisting of 5-8 atoms deposited on silica were treated with water and aqueous NaOH solution, and the change of their chemical properties upon these treatments was studied. With water, no change was observed, indicating that the clusters survive as individual entities under such realistic conditions. After immersing the samples into the NaOH solution, a change of the ...

Ureide analyses of soybean (Glycine max L.) tissues were accomplished with a modified and simplified automated analysis used to determine allantoin concentration in rat urine. The length of the circuit and flow rates of the solutions were reduced, and NaOH was used for color development at room temperature. Keto-acids did not significantly interfere with the determinations of ureides except for...

The determination of arsenic in five different extraction environments (acetic acid, EDTA, NaOH, MeOH/H2O, acetonitrile) from baby formulas sold in the market was tested. Total arsenic contents were analyzed with Flow Injection-Hydride Generation-Atomic Absorption Spectrometry (FI-HG-AAS) and Graphite Furnace-Atomic Absorption Spectrometry (GF-AAS) after digestion of samples with nitric acid us...

The quenching effect of Se(>4— and NO3(scavenger for trapped electrons) on the delayed luminescence ('recombination luminescence') caused by the recombination of trapped electrons with mother tryptophan cations was investigated in aqueous 9 M NaOH and 9.5 M LiCI glasses at 77 K . The results show that the trapped electrons responsible for the recombination fluorescence were deep-trapped ones in...