نتایج جستجو برای: materials preparation

تعداد نتایج: 594351  

Journal: :Bulletin of the American Geographical Society 1908

Journal: :Metals 2023

Magnetic phenomena are amazing and mysterious topics [...]

Journal: :Water 2023

In this study, phosphorus-doped watermelon rind carbon material (WC-M) was prepared by a muffle furnace, and the adsorption performance of WC-M to dyes investigated. At same time, effects dye concentration, pH, temperature, other factors on effect were experiment, furnace used carbonize doped with phosphoric acid, which simplified experimental operation. Regarding results SEM analysis, surface ...

پایان نامه :0 1374

having conducted the experiment and analysed the data, the researcher computed the groups mean scores and variances for the test relating to the research question. as the final atep, a t-test was conodonted for the hypothesis. as noted earlier, the significance level was determined at .05 and .01 respectively. the observed t-value was higher than the critical t-value at. 5 and .01 levels. conse...

2011
Wenhao Ye Zheng Lin Beibei Dong Jinfeng Kang Xiucheng Zheng Xiangyu Wang

Ti-SBA-15 mesoporous materials were directly synthesized via a hydrothermal process and characterized by using nitrogen adsorption-desorption measurements, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, diffuse reflectance ultraviolet-visible spectroscopy, and infrared ray spectroscopy. The effect of synthesis temperatures on the structure and catalytic effic...

2011
Jaroslav CAPEK Dalibor VOJTECH

Magnesium is a biocompatible and biodegradable metal which possesses suitable mechanical properties for load-bearing applications in orthopaedics. Moreover, magnesium ions, the products of magnesium corrosion, improve growth of the new bone tissue. Implementation of the porosity into these materials compromises values of mechanical properties closer to the values of nature bone and allows the i...

1999

13. ABSTRACT (Maximum 200 words) Prompted by the prediction of Cohen and coworkers that beta carbon nitride may have properties similar to diamond, there have been many attempts to synthesize this hypothetical metastable material. We successfully synthesized this material via epitaxial stabilization using TiN(lll) and ZrN(lll) as the growth template. The coatings were CN/TiN or CN/ZrN multilaye...

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