January 2011
Finite element analysis of bolted column base connection without and with stiffeners
Column base plates are analyzed and designed on the assumption that the plate is rigid and its thickness is determined from the cantilever action of the plate projection beyond the column face. In the case of column base plates with stiffeners, the plate thickness is determined by considering its bending and some parameters, which define the boundaries. In the present research two aspects are investigated, the adequacy...
January 2011
The effectiveness of groundwater recharges well to mitigate flood
Management of urban storm-water is characterized by the use of hydraulic structures like culvert, man-made channels, water ways, detention basins, infiltration trench, spillway, dams and other drainage structures to either convey or store the storm-water downstream. But in some cases these structures may not be effective to either convey or store the excess runoff because of some inherent factors like topography, soil...
January 2011
Climatic parameters and net irrigation requirement of crops
The major meteorological data like temperature, relative humidity, rainfall, wind speed and sunshine hour for a period of 21 years was collected and analyzed. This was done for planning of irrigation strategy and to develop an appropriate irrigation scheduling for different cropping systems. Probability analysis, evapotranspiration and net irrigation requirement were estimated. For recurrence interval of 2, 5, 25, 50...
January 2011
A conceptual design approach to manage large earthquake forces
Design is an area over which the engineer has the most control, both technically and financially, in creating structures, which can withstand destructive forces of earthquakes. The most widely applied philosophy is to design for earthquake-resistant structures with the idea that stronger and stronger building materials are needed to resist larger and larger forces from earthquakes. This approach may be adequate when...
January 2011
Analysis of enterprise service buses based on information security, interoperability and high-availability using Analytical Hierarchy Process (AHP) method
This research study stresses upon the comparative analysis between commercial and non-commercial Enterprise Service Buses (ESB) for large-scale organizations. We have used Multi Criteria Decision Analysis (MCDA) method known as Analytical Hierarchy Process (AHP) based on three criteria that is Information Security (IS), Interoperability and High Availability (IHA). Many comparative analysis reports and papers are...
January 2011
Specifications of thermal waters and their classification on the base of neural network method: Examples from Simav geothermal area, Western Turkey
Western Turkey is one of the best known geothermal fields in Turkey. There are numerous geothermal energy plants (for example Kızıldere, Nazilli, Hıdırbeyli, Balçova, Tuzla) in Aegean region, Western Turkey. Simav geothermal field is located within the Aegean Graben System in Western Anatolia. Rock units in the study area are mainly the formation of Menderes Massive. The Simav geothermal waters were divided...
January 2011
Zero padded suffix aided subspace-based narrowband interference detected adaptive channel estimation for MB-OFDM UWB systems
The ECMA-368 standard specifies multiband orthogonal frequency division multiplexing (MB-OFDM) as the definitive technology for high rate ultra-wideband (UWB) communications. Like other wireless systems, the performance of a correct data signals detection and decoding in MB-OFDM UWB is reduced by narrowband interference (NBI). A more specific problem of severity arises when interferences are present during the channel...
January 2011
Study on rooftop outdoor thermal environment and slab insulation performance of grass planted roof
The benefits of rooftop greening are ascertained in thermal perspective. It effectively reduces the near surface ambient temperature and the reflected irradiation from the rooftop slab, thus increasing the thermal comfort environment above the lawn and reduces the heat transferred through the rooftop slab. The former effect enables the potential usage of the rooftop spaces for human activity and helps to alleviate the...
January 2011
The role of carbon sequestration project in protecting pastures in Iran
The main purpose of this study was to examine the perception of respondents about the role of carbon sequestration project in protecting pastures in South Khorasan Province of Iran. The research design was carried out by descriptive and analytical methods. The total population of this study was 340 respondents who participated in carbon sequestrationproject in arid region province. The data collected by using...
January 2011
Photopyroelectric characteristics of Pr6O11 – ZnO ceramic composites
Characteristics of different Pr6O11 ceramic composites were studied using photopyroelectric spectroscopy. The amount of Pr6O11 in the composite was varied from 0.1 to 0.75 mol% at the sintering temperature of 1190 and 1270°C. It was found that optical energy band-gap (Eg) of the composite is reduced by increasing the amount of Pr6O11 in the composite at both sintering temperatures. However, the...
January 2011
Mössbauer experiments in a rotating system on the time dilation effect
In this contribution, we analyze both the old Mössbauer experiments in a rotating system and our new experiment on this subject, which unambiguously indicate the presence of an additional component in the relative energy shift DE/E between emission and absorption lines, as compared with the classic relativistic expression written to the accuracy c-2 (that is DE/E=-u2/2c2,...
January 2011
Provenance of groundwater in the crystalline aquifer of Johannesburg area, South Africa
Recharge dynamics, possible flow path and human impact within the crystalline aquifer of the Johannesburg area have been described based on the hydrogeochemical characteristics and environmental isotopes. The dominant circulation zone has also been identified in the study. Understanding of the groundwater dynamics is very important for strategic management of the resource as the country is dependent on groundwater...
January 2011
Protective effect of Morinda officinalis polysaccharides on bone degeneration in the aged rats
In the current study, we examined the effect of Morinda officinalis polysaccharides (MOP) on bone quality in aged rats. Rats were given orally by daily gavage at 200 and 400 mg/kg/day for 3 months, respectively. The results showed that there was a significant decrease in serum alkaline phosphatase (ALP), Interleukin 6 (IL-6) content and a significant increase in density and strength of femur and lumbar...
January 2011
Inhibition of Lentinus edodes polysaccharides against liver tumour growth
The objective of this study was to examine the in vitro antitumour activities of Lentinus edodes polysaccharides. The present results demonstrated that L. edodespolysaccharides at 100 and 200 mg/kg dose-dependently suppressed liver tumour growth. The polysaccharides were still found to be dose-dependently and enhance spleen and thymus index and inhibit expression of Caspase-3 in mice with liver...
January 2011
Theoretical study of basis set effects on the nano intermolecular potential energy surface of alanine -methionine: Calculation of second-virial coefficients
The potential energy of Alanine-Methionine was studied on the basis of ab initio calculations performed by using the HF,DFT-B3LYP and MP2 methods with 6-31G and 6-31G* basis sets. The following trends with basis set can be deduced for the depth (De= -Eint (Re) = -Emin) of the potential well of the calculated intermolecular potential energy surfaces (IPSs). In ab initio calculations the basis set superposition...
January 2011
On computational methods for solving systems of fourth-order nonlinear boundary value problems
In this paper, we use a modified variation of parameters method, which is an elegant coupling of variation of parameters method and Adomian’s decomposition method, for finding the analytical solution of systems of fourth-order nonlinear boundary value problems. Examples are given to illustrate the implementation and efficiency of the modified variation of parameters method. Results obtained in this paper represent...
January 2011
Homotopy analysis method for fractional partial differential equations
This paper applies the homotopy analysis method (HAM) to obtain analytical solutions of fractional heat- and wave-like equations with variable coefficients. The applications of the homotopy analysis method were extended to derive analytical solutions in the form of a series with easily computed terms for these generalized fractional equation. Some examples are presented to show the efficiency and simplicity of the...
January 2011
A reliable algorithm for physical problems
This paper gives a detailed and comprehensive study of a reliable algorithm which is called the Modified Decomposition Method (MDM) and is mainly due to Geijji and Jafari to solve linear and nonlinear problems of physical nature. It has been shown that the MDM is very easy to implement and is fully compatible with the nonlinear nature of the physical problems. Moreover, this algorithm is independent of the inbuilt...
January 2011
On the quasi elliptic functions
In this study, the function was used instead of function Dedekind’s . Then the value change of this function with the variables was investigated. Hence the quasi elliptic function was established. Key words: Elliptic function, lattice, period.
January 2011
Approximate Kerr–like interior and exterior solutions for a very slowly rotating star of perfect fluid
Approximate Kerr- like interior and exterior solutions for a very slowly rotating star of perfect fluid is presented here which is valid for a very slowly rotating and hence very slightly oblate star of perfect fluid rotating with a very small constant angular velocity. Corresponding approximate exterior metric represents approximate Kerr exterior metric for a perfect fluid. The aim here is to obtain Kerr-like...
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