Estimating Rotational Frequency Response Function Using Mode Expansion and Frequency Response Function Synthesis Method

The rotational frequency response function (RFRF) plays a crucial role in increasing the accuracy of the calculated results of the frequency-based substructuring method. However, RFRFs are often omitted due to the difficulties in the measurement process and limitations of the equipment. This paper presents a scheme of estimating the rotational FRF of an irregular plate structure using the FE model reduction and expansion method. The reduced FE model was introduced using the improved reduction system (IRS) and expanded to the experimental modal model (EMA model) using the system reduction and the expansion (SEREP) method. The FRF expanded method was then employed to derive the translational and rotational FRFs from the expanded EMA model. The accuracy of the expanded FRFs was evaluated with the EMA model of the irregular plate. It was found that the translational and rotational FRFs estimated from the proposed scheme were in good agreement with the EMA counterparts. Furthermore, the patterns of the estimated RFRFs were well correlated with the EMA RFRFs. This work shows that the proposed scheme may offer an attractive alternative way of accurately determining the RFRs of complex structures or structural components

Ethnoveterinary practices in Uttara Kannada district of Karnataka

253-258Traditional methods of veterinary treatments using plants are predominant in rural folk of Uttara Kannada district situated in western Ghats of Karnataka. A total of 25 formulations from 39 plant species belonging to 30 families used to treat 21 diseases of domestic animals are described. The method of preparation, dose and duration of each plant along with its botanical name, family and local names are discussed

Laser Raman spectra of single crystals of orthorhombic potassium, rubidium, and cesium perchlorates

Laser Raman spectra were recorded for $KClO_4$, $RbClO_4$, and $CsClO_4$ for all 6 necessary orientations in the range 50-1200 $cm^{-1}$. In the 50-400 $cm^-1$ region the low frequency lines are attributed to lattice vibrations whereas the high frequency lines are librational. In the 400-1200 $cm^{-1}$ region the cation effects on $ClO_{4-}$ frequencies is insignificant. The doubly degenerate vibration \nu$^2$ does not show any splitting. The triply degenerate vibration $\nu$s shows a splitting ranging from 28 to 40$cm^{-1}$

Triacontanol inhibits both enzymatic and nonenzymatic lipid peroxidation

The effect of the plant growth regulator, triacontanol (TRIA) on lipid peroxidation was studied in three different systems: (i) isolated chloroplasts of spinach (Spinacea oleracea L.) leaves; (ii) egg lecithin liposomes; and (iii) soybean lipoxygenase (LOX) system. The nonenzymatic lipid peroxidation in isolated chloroplasts and egg lecithin liposomes was measured as the amount of thiobarbituric acid reactive substances (TBARS) formed. Inhibition of Fe2+ and/or light-induced lipid peroxidation by TRIA was observed in both isolated chloroplasts and egg lecithin liposomes. The kinetics of soybean lipoxygenase-I (LOX-1) was studied using linoleic acid as the substrate. The enzyme was competitively inhibited by TRIA. The K-i for TRIA inhibition of the enzyme was estimated to be 3.2-5.0 mu M according to different methods of estimation. TRIA has been known to exhibit antiinflammatory action in animals and this anti-inflammatory effect of TRIA might be mediated through inhibition of lipid peroxidation. Since LOX inhibitors have been extensively used as therapeutic agents, TRIA, being a natural compound has been suggested to be an effective anti-inflammatory drug

Structural, Optical And Electrical Properties Of Sb Doped And Undoped Agin1-xgaxse2 And Ag( Inga) Se-5(8) Thin Films

Antimony doped and undoped nanostructured thin films of AgIn1 − xGaxSe2 and Ag(InGa)5Se8 on optically flat soda lime glass substrates are prepared by a three stage co-evaporation process. Energy dispersive analysis of X-rays (EDAX) and X-ray photoelectron spectroscopy in conjunction with atomic force microscopic technique and scanning electron microscopic technique are used, respectively, for compositional and surface morphological analysis of the films. X-ray diffraction (XRD) data on the films are analysed to estimate the influence of antimony doping and indium replacement by gallium, on the structure of the films, by determining the anion–cation bond lengths and anion displacement in the thin films. The obvious dependence of band gap on the composition of the films establishes the possibility of band gap tailoring of the films. Low temperature optical absorbance measurements in the temperature regime 90–301 K are used for investigating the effect of doping on the temperature coefficient of band gaps of the films. Rutherford scattering spectra quantify the thickness of the films for conductivity (σ) measurements. The films exhibit n-type conductivity with two linear regions in the ln(σ) versus temperature inverse graphs, which indicate a defect activated conduction and intrinsic conduction, respectively, in the near room temperature and high temperature regions