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JPC – Journal of Planar Chromatography – Modern TLC - Use of an internal standard is proposed in this thin-layer chromatographic determination of fluconazole in tablet and capsule... 相似文献
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R Nirmala V Sankaranarayanan K Sethupathi AV Morozkin T Geethakumary Y Hariharan 《Pramana》2002,58(5-6):1101-1104
New R
2Ti3Ge4 (R=Dy, Ho and Er) intermetallic compounds have been synthesized and characterized by X-ray diffraction and low temperature ac
magnetic susceptibility, electrical resistivity and thermoelectric power measurements were carried out. The compounds crystallize
in the parent, Sm5Ge4-type orthorhombic structure (space group Pnma) and lanthanide contraction is observed as one moves along the rare-earth series.
The changeover from paramagnetic to antiferromagnetic phase happens at low temperatures and the ordering temperature scales
with the de Gennes factor. The electrical resistivity is metallic with a negative curvature above 100 K. Thermopower displays
a weak maximum at temperatures less than 50 K signifying the possible phonon and magnon drag effects. 相似文献
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Resonant ultrasound spectroscopy was used to measure the elastic constants of bcc Ta0.33V0.67 over the temperature range 3.5–300?K; the results were compared to earlier measurements on C15 TaV2. The temperature dependence of the polycrystalline shear modulus is completely different in the two phases; that of the bcc phase decreases with temperature whereas that of the C15 phases increases in an anomalous fashion. This difference is consistent with a model involving doubly-degenerate levels at the X point of the Brillouin zone in the C15 phase with the Fermi level lying near the doubly degenerate level. This model accounted for the unusual behaviour of the C15 phase. Debye temperatures were determined from the ultrasonic measurements: 295?K for the C15 phase and 315?K for the bcc phase. 相似文献
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Kantak JB Bagade AV Mahajan SA Pawar SP Shouche YS Prabhune AA 《Applied biochemistry and biotechnology》2011,164(7):969-978
A lipolytic mesophilic fungus which produces lipase extracellularly was isolated from soil. Based on ITS1-5.8S–ITS4 region
sequences of ribosomal RNA, it was concluded that the isolate JK-1 belongs to genus Rhizopus and clades with Rhizopus oryzae. The present paper reports the screening, isolation, identification, and optimization of fermentation conditions for the
production of lipase (EC 3.1.1.3). Culture conditions were optimized, and the highest lipase production was observed in basal
medium with corn steep liquor as nitrogen source and glucose as carbon source. Maximum lipase production was observed at 72 h,
which is about 870 U/ml. Optimization of fermentation conditions resulted in 16-fold enhancement in enzyme production. 相似文献
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Amol A. Nagargoje Satish V. Akolkar Madiha M. Siddiqui Aditi V. Bagade Kisan M. Kodam Jaiprakash N. Sangshetti Manoj G. Damale Bapurao B. Shingate 《中国化学会会志》2019,66(12):1658-1665
A series of pyrazole‐incorporated monocarbonyl analogues of curcumin were synthesized via Clasien–Schimidt‐type condensation and subsequently screened for in vitro antiproliferative and antioxidant activity. The analogues 4c, 5d, 5e, 5g, 6e, and 6f showed potential activity against the MDA‐MB‐231 cell line. The synthesized analogues were also screened for their antioxidant activity. Compounds 5a , 5e , 6d, and 6f exhibit comparable radical scavenging activity with respect to the standard drug ascorbic acid. Furthermore, a molecular docking study has been conducted for 5d and 5g and suggests that these compounds have a potential to become lead molecules in drug discovery and process. 相似文献
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