نتایج جستجو برای: mixed alkali effect
تعداد نتایج: 1844133 فیلتر نتایج به سال:
The synthesis, structure, and nonhumidified proton conductivity of the hydrated alkali thiohydroxogermanates, denoted as MxGeSx(OH)4-x·yH2O (1 ≤ x ≤ 4, 0 < y < 8) for M = Na, K, Rb, and Cs, are reported. These materials are generally X-ray amorphous when produced by a low-temperature (75 °C) aqueous solution evaporation−precipitation route. Raman and IR spectroscopies indicate mixed chalcogenid...
Honeycomb layered oxides constitute an emerging class of materials that show interesting physicochemical and electrochemical properties. However, the development these is still limited. Here, we report combined use alkali atoms ($\rm Na$ $\rm K$) to produce a mixed honeycomb oxide material, namely, NaKNi_2TeO_6$. Via transmission electron microscopy measurements, reveal local atomic structural ...
In order to determine by viscometric methods (l), the effect of the hydrogen ion concentration of starch substrates upon the activity of the amylase of Aspergillus oryxa! (taka-diastase), it was first necessary to ascertain the effect of acid and alkali alone upon the viscosity of starch solutions. E$ect of Hydrogen Ion Concentration upon the Viscosity of Unbu$ered Starch Solutions.-10.2 gm. of...
Purpose To investigate the effect of naringenin eye drops in corneal neovascularization induced by alkali (1 N NaOH) burn in mice. Methods Corneal neovascularization in the right eye of male Swiss mice was induced by alkali. Treatment with naringenin eye drops (0.08-80 μg; 8 μL of 0.01-10 g/L solution) or vehicle (saline) started 2 days before corneal neovascularization was induced and was pe...
Alkali activated material has recently attracted great attention as an environmentally friendly building material. Generally, it exhibits higher mechanical properties and better durability when compared with Portland cement based materials. In this article, mixed alkali activated systems consisting of N-A-S-H and C-A-S-H hydrated gels were produced, using metakaolin as a dominated starting mate...
PURPOSE To investigate the effect of netrin-1 on alkali burn-induced corneal inflammation and neovascularization. METHODS The expression of netrin-1 and its receptors UNC5A, UNC5B, UNC5C, UNC5D, adenosine 2b receptor (A2BAR), deleted in colorectal cancer (DCC), and neogenin in normal and alkali-burned rat cornea were determined by RT-PCR and/or Western blot analysis, or immunostaining. Topica...
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