The aim of present study was to prepare and evaluate mouth dissolving tablets of ibuprofen (IBU). Ternary solid dispersion (SD) of IBU was prepared using PEG 4000 as carrier and Tween 80 as surfactant. The SD formulations were prepared by solvent evaporation and melt solvent method by varying ratio of PEG 4000. Different weight ratio of carrier, drug and surfactant 5 : 5 : 1, 10 : 5 : 1, 25 : 5...

a new fourier transform-infra red (ft-ir) spectrometric method was developed for assaying hydrochlorothiazide (hct) and enalapril maleate (enm) in binary solid pharmaceutical formulations. multivariate partial least squares (pls) method was used for calibration of derivative spectral data. acetonitrile was used as solvent due to its spectral transparency and adequate solubility of analytes in i...

Fourier transform-infrared microspectroscopy (micro-FT-IR) operated in attenuated-total-reflectance (ATR) and transmission modes following stereomicroscopy was used for the purpose of matching known and questioned paint samples in a fatal hit-and-run case. A tiny, thin and smeared dot of red paint sticking on the broken-off cross section of a side-mirror rod was taken from the victim motorcycle...

in this work, magnetically separable zno-znfe2o4-ppy nanocomposite as an efficient adsorbent was synthesized by two steps. at first, zinc oxide (zno) and znfe2o4 nanoparticles were synthesized using simple and facile precipitation method. then, zno-znfe2o4 mixed oxide was modified by polypyrrole (ppy). the adsorbent was characterized by x-ray diffraction (xrd), fourier transform infrared (ft-ir...

Various plant materials for the synthesis of nanoparticles is considered a green technology, In the present study reports the synthesis of Silver nanoparticles were synthesized from Calotropis gigantea leaf and the formation of silver nanoparticles was observed with different time intervals. The results recorded from UV-Vis spectrum, scanning electron microscope, X ray diffraction and Fourier t...

Several vibrational band-shape studies which have used either Raman or infra-red (IR) spectroscopy have been reported in the literature [1—3]. With very few exceptions [4,5], however, the studies have generally been performed on symmetrical molecules in non-viscous fluids. In such situations molecular motions may be characterized with little ambiguity [6]. Translational and rotational motions o...

We have investigated the ordinate scale accuracy of ambient temperature transmittance measurements made with a Fourier transform infrared (FT-IR) spectrophotometer over the wavelength range of 2-10 mum. Two approaches are used: (1) measurements of Si wafers whose index of refraction are well known from 2 to 5 mum, in which case the FT-IR result is compared with calculated values; (2) comparison...

Three experiments demonstrate that infra-red spectroscopic measures of bone mineral crystallinity are partially dependent upon sample preparation methods. Intensive grinding of bone samples for Fourier transform infra-red (FTIR) spectroscopic analysis results in a net decrease in splitting factor (SF), a common measure of apatite crystallinity. If grinding is overly intensive, SF measurement ma...

Objective(s): Hardystonite (HT) is Zn-modified silicate bioceramics with promising results for bone tissue regeneration. However, HT possesses no obvious apatite formation. Thus, in this study we incorporated Sr and Ti into HT to prepare Sr-Ti-hardystonite (Sr-Ti-HT) nanocomposite and evaluated its in vitro bioactivity with the purpose of developing a more bioactive bone substitute material. Ma...

BACKGROUND AND OBJECTIVES In present study we aimed to clone the luxI gene encoding N-acyl-homoserine synthase detected in clinical isolates of Acinetobacter baumannii and study its expression in Escherichia coli transformants. MATERIALS AND METHODS Four A. baumannii hospital strains which demonstrated strong biofilm activity were selected in this investigation. The presence of luxI gene was ...