Solar energy is one of the common sources of renewable and clean energy. It is really difficult to know exactly the solar radiation at any specific moment at a specific location as clouds are moving simultaneously. Clouds decays solar radiation dramatically. It is astonishingly that in different solar radiation observations are recorded in the same location or town or city due, at the same moment of time, due to the clouds' effect. Such effect has a great influence on solar photovoltaic energy can be generated at any place during the daytime. Generally, manufacturers and suppliers of solar photovoltaic energy system considers the global solar radiation known and published for each town or city as metrological data. However, this led to and overestimation of the solar photovoltaic produced energy and represents a misleading to customers as such estimate it doesn't consider cloudy days.
Armidale is a regional city in New South Wales (NSW) in Australia, as well it is the highest town all over Australia. This study aims to provide a justified realistic/creditable/ reliable estimate of annual typical daily solar photovoltaic power. The reason of this justification that this study depends on an accurate estimate of cloudy global solar radiationfor urban Armidale. Such estimate would be a great benefit of solar energy specialists and non-specialists households to obtain an estimate of daily potential solar photovoltaic power would likely be generated in Armidale.
Keywords: - Armidale NSW, solar Photovoltaic power, test meteorological year, test reference year, solar radiation, micro-scale energy generation
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Wind is one of the common sources of renewable and clean energy. It is really difficult to predict wind performance at any specific moment. In addition to the very intermittent nature of wind, wind behaviour and speed are directly affected by several factors, specifically the nature of the environment and the height that wind blows at. Wind behaviour at urban large city areas and urban suburban areas is completely different than such behaviour at open terrain and flat unobstructed areas. Wind performance in urban and areas are completely different from either open areas or capital cities with huge high rise buildings. Wind is more disturbed and turbulent and wind speed decreases due to the existence of several obstructions, mostly buildings either single storey or medium rise or high rise buildings in addition to trees. Moreover, wind speed at different heights is directly affecting win energy can be generated from using wind turbines. Thus, it is never an easy task to provide a reliable realistic estimate of wind energy at a specific urban location or city. Many trials based on using meteorological announced wind speed which is a clear overestimation and misled non-specialists due to the fact that meteorological observations are conducted on specified heights (mostly 10 meters) in an open place with no restriction, this would provide a wind speed much higher than wind speed would occur in the urban environment of the same town. Armidale is a regional city in New South Wales (NSW) in Australia, as well it is the highest town all over Australia. This study aims to provide a justified realistic/creditable/ reliable estimate of annual typical daily wind power. The reason of this justification that this study depends on an accurate estimate wind speed at different heights calculated specifically for urban Armidale. Such estimate would be a great benefit of wind energy specialists and non-specialists households to obtain an estimate of daily potential wind power in Armidale.
Keywords: - Armidale NSW, wind power, test meteorological year, test reference year, wind speed, micro-scale energy generation, micro-wind turbines
Investigation was carried out on the slope stability of lateritic soil due to effects of some geotechnical properties in selected burrow pits in Akure, Ibadan, Ewekoro and Iperu areas, south western, Nigeria. The geotechnical properties were determined in accordance with American Society for Testing and Materials (ASTM) Standards. The conventional slope stability analysis was based on the linear Mohr – Coulomb failure criterion utilizing the notion of safety factors with respect to shear strength, where their average results of cohesion, angle of friction, bulk density and moisture content from the locations are 82 kPa, 18 degree, 1700 kg/m3, and 22 % respectively. The average specific gravity for locations was 2.73. The degree of permeability was very low except for location 6 in Ibadan area which is medium. The grain size distribution for the locations was classified into SC – SM (silt clayey sand). From compaction test, average moisture content, average wet density and dry density for the locations are 23 %, 1849 kg/m3 and 1512 kg/m3 respectively while the average compaction curve deduced 24 % optimum moisture contents and 1639 kg/m3maximum dry density. The Atterberg limits test results indicate that locations 1 – 5 were recorded as plastic soil while location 6 non-plastic soil. Also, the linear shrinkage degree of expansion for location 1 – 5 indicates critical while location 6 indicates non-critical. Finally, statistical mathematical model equations were developed. The factor of safety for locations 1 – 5 was satisfactory for routine extraction and loading operations while location 6 was unsafe due to loading conditions of the terrain.
Keyword: - Laterite, Geotechnical properties, Slope stability, Factor of safety, and Mathematical model.
This study was performed on production process of bio-diesel from fats and internal organs of sheep's in Kirkuk city, Northern of Iraq. It revealed that great proportions of the productivity of these fats in conjunctions with using different ratios of ethanol at each production process with varying temperature. The first stage was production small samples of bio-diesel by using different parameters and conditions (the ethanol percentage additive and temperature changes) to obtain practically the largest proportion of production.
Keywords: - bio-diesel, Iraqi sheep's in Kirkuk city.
Numerical assessments of radon exhalation from soil samples together with the detection probability of alpha particles by CR39 and LR115 detectors were the first objective of this work with demonstration of how radon propagates in various media using SRIM2013 software. The analytical approach was developed to estimate the values of range and detection probabilities by SSNTDs of alpha particles emitted from radon gas and progenies. It was found that the new version of SRIM2013 produced a deviation in stopping power, alpha range and detection probability of both alpha detectors.
Keywords: alpha energy, alpha range, detection probability, SRIM, CR39, LR115
[1] Dwaraka K., Meena V.2010, "Kinetic Studies on Dairy Wastewater Using Immobilized Fixed Bed Anaerobic Digester" International Journal of Chemical Environment and Pharmaceutical Research Vol-1(1) No.1,1-5
[2] Dwaraka K., JayaRaju.K 2010 "Municipal Wastewater Treatment And Kinetic Studies Using Immobilized Fixed Bed Anaerobic Digester" IJABPT Vol I 921-925.
[3] Sagar A., V.S.Kore., S.V.Kore., Prof G.S.Kulkarni and Prof S.V.Ranade 2011 "Optimization Of Reaction Kinetics For Anaerobic Filter With Reference to distillery Condensate Treatment" International Journal of Emerging Technology and Applications in Engineering,Technology and Sciences Vol.4(2) 380-383.
[4] G Srinivasan., R.Suramaniam and V.Nehrukumar., "A Study on Dairy Wastewater Using Fixed Bed Anaerobic Diphasic Digester" American Eurasian Journal of Scientific Research,2009 Vol.4(2) 89-92.
[5] Sumi S., Mathew L., 2009, "Influence of Media Packing Depth and HRT on Performance of Anaerobic Hybrid Reactors", 10th National Conference on Technology Trends, College of Engineering Trivandrum, pp. 38 – 41.
A very important property of jointly random normal variables and which will be starting point
for our development, is done zero correlation implies independent .This property can be verified by using
multivariate transform .suppose U and V are independent zero mean normal random variables and that X =
aU+bV and Y = cU+dV, so that X and Y are jointly normal. The exponent term q(x,y) is the quadratic form of x
and y is obtained .The more general case when x and y are dependent a typical contour is described by an ellipse
and it is utilized for our application part.
The original definition of LPD is a corpus luteum defective in progesterone secretion ,which in turn
was a cause of infertility or early spontaneous abortion. Here we have considered Luteinizing hormone (LH) and
Progesterone as Bivariate normal and corresponding quadratic function q(x,y) is obtained when they are
correlated.
Keywords: - LH, FSH, Bi- Variate Normal Distribution Mathematical Classification: 60GXX, 60E05
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[2]. Hsu CC, Kuo HC, Wang ST, Huang KE: Interference with uterine blood flow by clomiphene citrate in women with unexplained infertility. Obstet Gynecol 86:917, 1995.
[3]. Jobanputra K, Toner JP, Denoncourt R, Gibbons WE: Crinone 8% (90 mg) given once daily for progesterone replacement therapy in donor egg cycles. Fertil Steril 72:980, 1999.
[4]. Kotz, S.; Balakrishnan, N.; and Johnson, N.L."Bivariate and Trivariate Normal Distributions".Ch 46 in Continuous Multivariate Distribution,Vol.1:Models and Aplications,2nd ed.New York: wiley,PP.251-348,2000.
[5]. Lakshmi,S. and Agalya,M."The Mathematical Model on Degradation of Progesterone in Luteal Phase Deficiency Women".IJAMMS, Vol.2, No.1 (Jan-June 2013),pp.1-9.
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