نتایج جستجو برای: crystalline precipitate
تعداد نتایج: 46652 فیلتر نتایج به سال:
The near-surface properties of maraging steels are key to controlling their mechanical properties. They can be tailored by surface treatments such as shot peening and also influenced prior machining. This study aims at determining the respective roles grinding processes on microstructure Custom 465 stainless steel. A combination experimental techniques, including X-ray diffraction (XRD), transm...
Abstract A major portion of phosphatic fertilizer comes from the limiting natural resource, rock phosphate which demands a timely alternative. Struvite, crystalline mineral low solubility, is worthwhile Evaluation local wastewater streams for their ability to precipitate struvite and its capability as under an alkaline soil environment was studied. Two stirring speeds, pH range 8.0–11.0, consta...
Precipitates of the ordered L12 ’ phase (dispersed in the face-centered cubic or FCC matrix) were imaged in Rene 88 DT, a commercial multicomponent Ni-based superalloy, using energy filtered transmission electron microscopy (EFTEM). Imaging was performed using the Cr, Co, Ni, Ti and Al elemental L-edges in the energy loss spectrum. Manual and automated segmentation procedures were utilized f...
Abstract In this study, the electrochemical mechanisms of struvite formation were investigated by studying behavior Mg‐based and (poly)crystalline‐Pt electrodes in presence ammonium dihydrogen phosphate, disodium chloride solutions. It was found that a precipitate formed on electrodes, while poly‐Pt electrode showed typical voltammetric features aqueous electrolytes. The structure, morphology, ...
The influence of hydrogen on the structural evolutions an Al-Mg-Si alloy during natural and artificial ageing was investigated experimentally. aim study a better understanding interactions between crystalline defects especially vacancies. Experimental data demonstrate that in environment, hardening response is delayed. This attributed to slower recovery excess vacancies linked lower mobility. T...
Zein can be extracted from maize (Zea mays) using ethanol solutions, and recovered from the extract by diluting with water. Dilution to 40% ethanol will precipitate a mixture of zein and maize lipid with 15% lipid. For possible zein applications, such as film production, purer zein is required. Most of the lipid can be removed from the precipitate by selective re-extraction with hexane or ethan...
Recent studies have shown that the release properties of vincristine encapsulated in large unilamellar vesicles (LUV) can be regulated by varying the drug-to-lipid (D/L) ratio. In this work it is shown that the drug-to-lipid ratio technique for regulating drug release also applies to doxorubicin encapsulated in LUV. In particular it is shown that the half-times (T(1/2)) for doxorubicin release ...
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