Chemical investigation of fruits of Crataeva nurvala has revealed the presence of four known compounds which are pentadecane, octanamide, 12-tricosanone and friedelin. These compounds have been characterized on the basis of spectral and other data. These are being reported for the first time from the fruits of this plant.
A ferroelectric BaTiO 3 thin film grown on a NdScO 3 substrate was studied using x-ray photon correlation spectroscopy (XPCS) to characterize thermal fluctuations near the a/b to a/c domain structure transformation present in this low-strain material, which is absent in the bulk. XPCS studies provide a direct comparison of the role of domain fluctuations in first-and second-order phase transformations. The a/b to a/c domain transformation is accompanied by a decrease in fluctuation timescales, and an increase in intensity and correlation length. Surprisingly, domain fluctuations are observed up to 25°C above the transformation, concomitant with the growth of a/c domains and coexistence of both domain types. After a small window of stability, as the Curie temperature is approached, a/c domain fluctuations are observed, albeit slower, potentially due to the structural transformation associated with the ferroelectric to paraelectric transformation. The observed time evolution and reconfiguration of domain patterns highlight the role played by phase coexistence and elastic boundary conditions in altering fluctuation timescales in ferroelectric thin films.
Chemical investigation of Crataeva nurvala leaves resulted in the isolation of four compounds, which are dodecanoic anhydride, methyl pentacosanoate, kaemferol-3-O-α α α α α-D-glucoside and quercitin-3-O-α α α α α-D-glucoside. Dodecanoic anhydride and methyl pentacosanoate are being reported for the first time from this plant. Kaemferol-3-O-α α α α α-D glucoside and quercitin-3-O-α α α α α-D-glucoside have already been reported from this plant. The genus Crataeva (family: Capparidaceae) is named in world: wild or cultivated 2. It is often found along streams honour of the Greek botanist Crataevas. Crataeva and also in dry, deep boulder formations in sub nurvala is commonly known as barna and varuna 1 and Himalayan tract 3. It is useful as a laxative, antipyretic, distributed, throughout India and tropical regions of the antilithic, antihelminthic, diuretic, demulcent, stomachic, alterative tonic in chest and blood diseases and is
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