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Molecular Structure, MESP, HOMO-LUMO, and Vibrational Analysis of β-Asarone Using Density Functional Theory
Get PDFMedicinal Plants have always had an important place in the therapeutic armoury of mankind. β-Asarone mainly found in Acorus calamus L., Araceae, is one of the main bioactive constituents of its essential oil. In this communication, we have presented the geometry optimization, molecular electrostatic potential surface, frontier orbital energy gap and vibrational wavenumbers of β-asarone using density functional theory (DFT/B3LYP) method employing 6-311G(d,p) basis set. A complete vibrational assignment has been done on the basis of an isolated molecule. The electronic transition has been calculated in the gas phase as well as in solvent environment (integral- equation formalism polarizable continuum model; IEF-PCM) using TD-DFT/6-31G basis set
A common fixed point of weakly compatible mappings in dislocated metric space
Get PDFThe purpose of this paper is to establish a common fixed point theorem for pairs of weakly compatible maps in dislocated metric space which generalizes and improves similar fixed point results.
Kathmandu University Journal of Science, Engineering and Technology Vol. 8, No. II, December, 2012, 25-3
Estimation of electron temperature in atmospheric pressure dielectric barrier discharge using line intensity ratio method
Get PDFDielectric Barrier Discharge was produced by applying high voltage AC source of frequency (10-30 KHz) and potential difference of (0-20) kV across two parallel plate electrodes with glass as dielectric barrier. Optical emission spectroscopy was used for the characterization of the discharge produced at atmospheric pressure. The emission spectra in the range of 200 nm to 850 nm have been analyzed to estimate the electron temperature by line intensity ratio method. The results showed that the electron temperature is about 0.9 eV
Generalized sasakian-space-forms with D-conformal curvature tensor
Get PDFIn this paper we study generalized Sasakian-space-forms with D-conformal curvature tensor. In generalized Sasakian-space-forms, we investigate some results on D-conformally flat, ?-D-conformally flat, ?-D-conformally flat and the curvature condition B(? ?).S=0.
Kathmandu University Journal of Science, Engineering and Technology Vol. 8, No. II, December, 2012, 48-5
In Vitro Interactions of Ciprofloxacin with Selected Drugs and Excipients
Get PDFThe present work comprises an interaction studies of ciprofloxacin, a quinolone antibiotic, with drugs (raw and market products) and excipients (raw and market products). For this, all the reaction conditions were simulated to gastric and intestinal environment. Drug-ciprofloxacin interactions were studied in USP Type II dissolution apparatus for three hours, aliquots of medium sampled out at an interval of 30 minutes. For excipients, fixed concentration of ciprofloxacin was mixed with varied ratio of excipients, shaken in an orbital shaker up to equilibrium time. The contents of ciprofloxacin in both processes were determined in UV spectrophotometer. The results revealed that both raw and market drugs: calcium hydroxide, aluminium hydroxide, magnesium hydroxide, sodium bicarbonate, calcium carbonate, marketed calcium carbonate tablets and marketed magnesium trisilicate suspension retarded the in vitro availability of ciprofloxacin in both simulated gastric and intestinal fluids. Further, binding of ciprofloxacin to talc, starch and microcrystalline cellulose was found to be non-linear but linear with activated charcoal and bentonite. While studying on two different formulations of activated charcoal, it was found that the maximum adsorption capacity for D-Tox capsules was 254.48 (simulated gastric fluid) to 232.63 (simulated intestinal fluid) and for D-Tox powder was 379.86(simulated gastric fluid) to 353.61 (simulated intestinal fluid) respectively. The effect of pH on binding to activated charcoal was not statistically significant. The binding of ciprofloxacin to drugs was found to be statistically significant and presumed to be due to chelation. The values of T50% and T90% increased drastically in both simulations, effect more pronounced in simulated intestinal fluid. Therefore, availability of ciprofloxacin can be affected by concurrent ingestion of aforementioned drugs or excipients.
 
A Fixed Point Theorem for Semi Compatible Maps in Fuzzy Metric Space
Get PDFThe aim of the present paper is to establish a common fixed point theorem for semi-compatible pair of self maps in a fuzzy metric space which generalizes and improves various well-known comparable results
Wild Edible Plant Resources Used by the Mizos of Mizoram, India
Get PDFThe present communication deals with the wild edible plant resources of Mizo people. Study documented botanical name, family, local name, parts used and mode of preparation along with their parts sold in the local market and their prevailing prices. A total of 279 plant species belonging to 100 families were reported from the study area and out of these 35 species are sold in the market (Bara bazar). Present finding suggest further investigation on nutritional and commercial aspects, pharmacological prospects and conservational needs
Assessment of Noise Pollution Behbahan City, Iran
Get PDFNoise pollution in urban areas of many countries in the world is a widespread problem and now worldwide recognizes it as a major problem for the quality of life in urban areas. Road traffic, industrial and production units and construction machinery are the causes of urban noise pollution. Behbahan city is one of the most populous Khuzestan cities in Iran. Assessment of noise pollution in Behbahan city was performed by seven stations as indicators and a station as a witness of commercial-residential areas. The Testo 815 Sound level meters device was used for data collection. Collecting data started from 20 February 2010 for duration of 28 circadian by the stations. Standard sound of commercial-residential zone in the open air Iran, for day time and night time are 60 dB and 50 dB respectively. Compared to the noise measurement in studied stations in Behbahan city we could say that Behbahan has noise pollution problem. Noise pollution can be due to high traffic volume, the width of streets, cars, motorcycles and distance disregard between commercial-residential areas and noise pollution sources noted
Generalized regular fuzzy biclosure spaces
Get PDFThe purpose of this paper is to introduce new notion of regular fuzzy biclosure space called generalized regular fuzzy biclosure space and investigate some of their characterizations.
Kathmandu University Journal of Science, Engineering and Technology Vol. 8, No. II, December, 2012, 43-47
DOI: http://dx.doi.org/10.3126/kuset.v8i2.732
Seismic Performance of Traditional Unreinforced Masonry Building in Nepal
Get PDFThe paper focused on the old traditional buildings, which were constructed more than 100 years ago. Some of these buildings were partially destroyed in 1934 AD earthquake and some of them survived without substantial damage. These unreinforced brick masonry buildings are vulnerable to seismic hazard especially when they are un-reinforced and constructed without special consideration of seismic design. These building are extensively being used and occupied by different governmental and public offices. These buildings were built with best available material during the time of construction with best available technology. However, their seismic resistances are intrinsically limited. Since, at that time no codes were available and no advanced materials of construction like concrete and steel were available, it is assumed that those buildings were made based upon the traditional knowledge and technology. A finite element analysis is carried out in order to reflect the characteristics of the unreinforced masonry (URM) building. A commercial software SAP2000 is used for the analysis. It is found that the existing forms of the buildings are highly vulnerable for future earthquake. For reducing the excessive out-of – plane deformation of the URM building, the loosely connected timber floor should be replaced by the rigid floor or increase the rigidity of the existing floor. Inadequate number of the existing cross wall which makes the large size of the rooms, long unsupported walls and loosely connected existing timber floor are the main drawbacks of the existing form of building. Due to the less number of cross wall connected with longitudinal walls and also the longitudinal direction of the building is more than five times larger than the transverse direction, the whole building cannot acts as a single unit and the longitudinal and transverse walls behaves independently and leads to failure during the earthquake