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Determining Bush Density Amount, Yield and Zea Maize Seed Moisture in Different Tillage Methods

Author(s):Ebrahim panahpour, Morteza Eslamdoust, Ali Gholami
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 673-677
Tillage or preparing land operation is of first suitable farm management factor that cause preparing wide environment from mineral resources, better water penetration into soil and lead to soil penetration and its change.This investigation was done in a loamy soil in order to survey and evaluation of bush density condition, yield and zea maize seed amount in different tillage methods in north of Shoush city. In this investigation, effects of 3 different methods that formed for preparing land in zea maize cultivation in this area and with 3 replication in complete randomized block design were studied. Treatments consisted of: 1 time moldboard method + 2 time longitudinal Disk+ leveler (convention tillage), 1 time tillage by using of compound tillage machine (chisel pillar)+ 2 time longitudinal disk (medium tillage)+ tillage method with 2 time longitudinal Disk+1 time cross plough (reduced tillage). Research results showed that convention tillage treatment with 71230 bush per hectare have lowest bush density amount, reduced tillage treatment by disk with 79000 bush per hectare had highest bush density amount but rather than tillage method with Chisel plough that its bush amount was 77330 hadn’t significant difference . Highest amount of zea maize seed yield with 8.8 Ton per hectare obtained from reduced tillage treatment with disk, tillage treatment by using of Chisel plough and convention tillage treatment had 8.5 and 8.3 ton seed yield mount per hectare, respectively. Convention method with 31.4 percent moisture had highest seed moisture amount, tillage treatment with Chisel and Disk were 29.5 and 27.6 percent humidity. Whatever the amount of zea maize seed moisture was lower, price of the product became more.

Simulating the Visco- Elasto Plastic Behavior of Glasphalt Mixtures by Using of Modified Burgers Model

Author(s):Mahyar Arabani, Neda Kamboozia
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 678-685
Analogous to most visco-elastoplastic materials, the creep curve of asphalt mixture can be generally divided into three-stages: decelerated creep, equi-velocity creep and accelerated creep. The Burgers model which can exhibit linear visco-elastic behavior is suitable to describe the first two stages of creep process and is not enough to represent the third stage. The aim of this study is simulating the visco- elastoplastic behavior of glasphalt mixtures under dynamic loading conditions by using the modified Burgers model. In this model a viscoplastic string is added to the Burgers model to predict visco-elastoplastic behavior of glasphalt mixtures at higher strain and high temperature. In this research the creep constitutive equation of the modified Burgers model is established for test conditions. Then the model parameters are solved by mathematical methods and also, predictions from the proposed model are compared with the experimental results. The results show that the modified Burgers model constitutes a very good fitting with the experimental data for each of the separately analyzed level of applied stress and testing temperature.

Tourism Planning and Rural Tourism Development (Case Study: Rural of Mahidasht District, Kermanshah)

Author(s):Kamran Noori, Farhad Zand
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 686-690
Nowadays, tourism not only is known as a trip, journey, entertainment, or the like, but also has become an outstanding economic activity recently, so that the total number of tourists has been over 702 million people worldwide in year 2000, whose travels to different places of the world has flown about 621 billion dollars into the world economy cycle. The goal of this study is to reveal the tourist capacities and capabilities of the villages of Mahidasht district in Kermanshah as well as introducing the region to the tourists so as to be able to easily reach the region and enjoy its natural appeals and tourist attractions, which, attracting tourists, could be assumed a major step in the development of the region. Given the geographic location, environmental conditions, and cultural properties of these villages, the district could have the capability of attracting tourists at a regional scale. Exceptional geographic location in the vicinity of a metropolis, exclusive condition as a seamless countryside, and location in the operational space of a metropolis all play important roles in the development of rural tourism in this region.

The effect of Oil price on the stock efficiency of petroleum production industries in Iran

Author(s):Narjess Najafi, Esmaeel Ramazanpour, Mohammadreza Monjazeb
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 691-696
The main aim of this study is to investigate the impact of oil price fluctuations on stock returns of the Products of Petroleum in Iran Stock Exchange. As well as independent variables and the dependent variables, three variables including inflation rate, company size and the ratio of book to market value as control variables are inserted in the model for checking the simultaneous effect of independent and control variables on the dependent variable. The research hypothesis test is performed under multiple regression analysis. The statistical population consists of all oil and chemical companies listed in Iran stock exchange since 2008 to 2012, by using their annual data. Finally, six companies that among the research attended in exchange in forms of annual data were analyzed. The results indicate that oil price fluctuations have negative impacts on the stock returns of oil products and chemical industries and there is no significant difference between these industries in terms of the relation between oil price fluctuations and the stock return. The results of this study can be used by individuals and companies willing to invest in the stock market and who are interested in financial and energy subjects.

Relationship between the percentage of clay with liquid limit, plastic limit and plastic index in four different soils texture class

Author(s):Salahedin Moradi, Eisa Ebrahimi
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 697-702
The Atterberg limits and the Proctor compaction test parameters are related to agronomy with regard to compaction hazard for soils and tillage. This study was conducted to characterize the percentage of clay with consistency limits (liquid limit, LL; plastic limit, PL and plastic index, PI) of in four different soils texture class (clay, silty clay, silty clay loam and clay loam). The result revealed soil plasticity has direct correlation with percentage of clay. The consistency limits, and plasticity index (PI = LL - PL) were measured for the soil taken from the 0-20 cm layer. The LL varied from 38 to 63 in clay soil texture, 27 to 55 in silty clay, 21 to 44 in silty clay loam and 15 to 35 in clay loam texture. The PL varied from 13 to 34 in clay soil texture, 12 to 33 in silty clay, 10 to 27 in silty clay loam and 10 to 26 in clay loam texture. The lowest PI was recorded in clay loam texture. The results of this study showed that soil clay content significantly change Atterberg limits and plastic index. Soil clay content in all experimental soils significantly (p < 0.01) increased liquid limit (LL) plastic limit (PL), and plastic index (PI) values. The highest LL, PL and PI values were obtained in clay-textured soil. There was a significant relationship between the soil clay content and the Atterberg limits and plastic index. The positive relationship between soil clay content and PL, LL and PI was found to be significantly linear whereas the relationship with the soil sand content was significantly negative. Regression analysis for Atterberg limits in four soil texture class showed that the percentage of clay were important character on liquid limit, plastic limit and plasticity index.

New technique for global solar radiation estimation by Imperialist competitive and Genetic Algorithms

Author(s):Hajar Bagheri Tolabi, M.H.Moradi
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 703-708
In this paper, imperialist competitive algorithm as a computational method and genetic algorithm are implemented in MATLAB software to estimate monthly average daily global solar radiation on horizontal surface for two different climate cities of Iran. The experimental coefficients for Angstrom model have been calculated using imperialist competitive algorithm for two different climate cities as well as a search method based on genetic algorithm is applied to accelerate problem solving. The output data compared with the coefficients obtained by statistical regression techniques Results indicated that imperialist competitive algorithm is a suitable method to find the best experimental coefficients based on Angstrom model and its predicted coefficients have more accuracy than coefficients estimated by statistical regression techniques.

Evaluation of yield in some seed potato cultivars grown in high and low altitude regions

Author(s):Farshid hassani, Abbas zareian, Seied Mehdi Mirtaheri
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 709-711
This research was conducted at two locations (in two farms including a highland region of Chahar-Mahal va Bakhtiari and a lowland in Alborz region) in 2010. Ten potato cultivars were planted based on randomized complete block design (RCB) with 4 replications. The results of simple variance analysis of data in the both places showed significant difference between cultivars in potato yield, emergence percentage and tuber dry matter. The results of variance analysis shoed a significant difference between varieties in tuber dry matter, tuber yield and emergence percentage in both Chahar-mahal va Bakhtiari and Alborz area. According to the results of comparison of means in Chahar-Mahal va bakhtiari area, varieties of Oceania and Spirit, Agria, Burren and Savalan were the highest in potato tuber yield while variety of Marfona was the lowest of this trait. Also the results in site of Alborz, varieties of Oceania, Banba, Agria, Marfona and Savalan were the highest in potato tuber yield.

The study of Internet_ based evaluation of the faculty members by student and Factors affecting it

Author(s):Heydar Ali Zarei, Ahmad marandy
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 712-716
The objective of current study was to survey the effective factors of internet- based evaluation of faculty members done by the students. For this purpose, evaluation results of all faculty members of Islamic Azad University of Khoy in two sequential terms, 2009-2010 , with their demographic variables, were gathered. Data were analyzed using independent samples T- test, Pearson correlation test, analysis of variance and multiple regression. The results showed that there were no significant statistical differences in evaluation scores in terms of sexuality, type of employment and type of educational certificate. But there was a significant difference in the rate of evaluation scores among different faculties. The scores of techno-engineering and basic sciences faculties were lower than the scores of humanistic sciences, agriculture, and nursing faculties. The results of regression showed that personal variables can significantly predict evaluation scores. Finally results revealed that there was a positive and significant relation between evaluation scores of faculty members in two sequential terms.

Municipal Waste Water Scrutiny on the trend of changes of Cadmium and chloride Concentrations in Soil Depths

Author(s):Ali Gholami, Robabeh Abdi Dezfuli, Ebrahim Panahpour
Journal: Technical Journal of Engineering and Applied Sciences
Publisher:Science Explorer Publications
Abstract
| Pages: 717-720
Today, water scarcity and declining water quality lead to use of unconventional water in farming including wastewater and urban sewage. This study was conducted with the objective of reviewing the impact of the application of raw and treated sewage on the trend of changes of some of soil chemical properties and micronutrients at different soil depths. An experiment was performed three times to this end in the form of a completely randomized design with three treatments including tap water, treated sewage, and raw sewage. Soil sampling was done as composites at the soil depths of 0-30 and 30-60 centimeters. Analyzing the samples was done by common experimental methods to determine some of the soil chemical properties and micronutrients, and the data was saved in Excel software database. The data experimented was analyzed at two probability levels of 1 and 5 percent by a statistical software to determine the level of significance, and the Duncan test was used to compare the averages. The results from the statistical analysis showed that the use of raw and treated sewage has stimulated an increasing trend in parameters including, Cadmium and chloride Concentrations.
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