Differential scanning calorimetry

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    maintaining all parameter values “in range” and response goal was set to “maximize” mode. The optimum parameter which was predicted by the RSM model was then validated experimentally in triplicates. 2.5. Scanning Electron Microscopy analysis of scaffold: The scaffold was examined under scanning electron microscope (SEM) (ZEISS EVO 18) under acceleration voltage of 10 kV. The uncoated sample was used for SEM…

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    The first scanning electron microscope (SEM) was invented by Manfred von Ardenne in 1937 (McMullan). However, further development of the SEM was accomplished by Charles Oatley and his colleagues at Cambridge University (McMullan; Egerton 17). He and his colleagues acquired their first images from the SEM in 1951 (Egerton 17). The SEM was developed because if a TEM is utilized, a specimen must be made extremely thin to prevent the electrons from dispersing inside the specimen and so the electrons…

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    Using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) images and spectra were obtained from various samples of silica and platinum on silica. Each sample contains unique structures which were prepared by etching the surface of silica in different conditions. A scanning electron microscope is a type of electron microscope that produces images of topography and composition by scanning a sample with a focused beam of electrons. Samples can be observed in high vacuum,…

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    Technical Review of Hydrothermal Formation of Calcium Copper Tetrasilicate Introduction Scanning electron microscopy (SEM) is used to obtain close-up images of samples with depth enabling high quality, 3D depictions on a microscopic level. It has been historically used to identify samples of interest such as bacterial biofilm, microtexture surfaces, and even cancer cells for diagnosis.[1, 2, 3] The first high magnification SEM was reported in a journal in 1938 by Ardenne after developing the…

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    Kanamycin sulphate and rifampicin were purchased from Hangzhou Dayangchem Co., Ltd., Zhejiang, China. Acetonitrile and ethanol (High performance liquid chromatography, HPLC, grade) were purchased from Merck, Germany. Sodium dihydrogen phosphate, phenylisocyanate, triethylamine, orthophosphoric acid (analytical reagent grade) and silicone oil (viscosity 10 cSt) were purchased from Sigma–Aldrich, St. Louis, USA. Size 3 hard gelatin capsules were kindly donated by Capsugel Co., Ltd., Tokyo, Japan.…

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    3.1.3 FESEM and EDS analysis The structural morphology of the Pure HA, Sr-doped HA, La-doped HA and La/Sr co-doped HA (different La concentrations of 0.03, 0.06 and 0.1M) nanoparticles are analyzed by FESEM images are shown in Fig. 3 (a)-(f). The morphology of pure HA shown in Fig 3 (a) indicates that formation of spherical (or) chain pearl shape of nanoparticles, ranging from 70 to 84nm. Further, Sr (0.1M) doped HA and La (0.1M) doped HA belongs to Fig.3 (b)-(c), appears the formations of few…

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    Since the water splitting reaction using semiconductor electrode reported by Fujishima et al. in 1972 [1], there is increasing interest in the development of metal oxide photocatalysts for environmentally friendly applications such as air purification [2], hydrogen production via water splitting [3] and the removal of organic molecules from water [4]. Recently, photocatalyst thin film has aroused growing interests instead of a powder type of photocatalyst. Photocatalyst film can be deposited…

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    Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) are two very widespread techniques for examining various properties of substances in many fields of study. These fields can range from biology to chemistry to geology and several others (5). Both work by using the electromagnetic properties of the ways that electrons travel and interact with other atoms. Because electrons have a shorter wavelength of motion and a much higher energy than light, electron microscopy has a…

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    Ex-Touch Triangle Essay

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    If R and r is the Circumradius and Inradius of a non-degenerate triangle then due to Euler we have an Inequality stated as and the equality holds when the triangle is equilateral. This ubiquitous inequality occurs in the literature in many different equivalent forms [4] and also Many other different simple approaches for proving this inequality are known. (some of them can be found in [2], [3], [5], [17], and [18] ). In this article we present a proof for this Inequality based on two basic…

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    Dentin Adhesion Essay

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    INTRODUCTION : The concept of dentin adhesion presently used involves the nanomechanical retention which is due to polymerisation of hydrophilic monomers around acid exposed collagen fibres.1 The entanglement of these monomers within the exposed collagen fibres gives rise to the so called Hybrid layer , which is also referred as Resin infiltrated Dentin layer.2 The presence of hybrid layer is important for attainment of a leakage free interface between the cavity walls and resin composite.2…

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