Introduction of fuel hydrocarbons and inorganic compounds (heavy metals) into the soil, resulting in a change of the soil quality, which is likely to affect the normal use of the soil or endangering public health and ground water .This study aimed to determine a series of parameters to co-remediation of diesel and heavy metals contaminated soil by non-ionic surfactants in a soil washing process. In this experimental study the effects of soil washing time, agitation speed, concentration of surfactant, chelating agent and pH on the removal efficiency were studied. The results showed that diesel removal by nonionic surfactants (Tween 80, Brij 35) in optimal condition were 70-80 % and 60-65 % respectively. Addition of chelating agent (EDTA) showed that removal of Cd and Pb can significantly enhance. The washing of soil by non ionic surfactants and EDTA was effective in co-remediation of diesel and heavy metals from polluted soil, thus it can recommend for remediation of polluted soil.

ABSTRACT \nPresent research intends to investigate relationship of psychological hardiness with emotional intelligence and work holism among high school teachers. The under study society includes all male and female high school teacher in Ghorveh city in the academic year 2012-2013. Using simple random sampling method, a sample size of 100 male and female teachers was selected. To collect data, Kobassa Psychological Hardiness Questionnaire, Bar-on questionnaire contains 90 questions about emotional intelligence and Aghabeigi Workaholics Questionnaire was employed. To analyze the data, descriptive statistics (frequency, percentage, mean and standard deviation) and inferential statistics (t-test and regression analysis) were used. The findings indicated that there is negative and significant relationship between the variables psychological hardiness and work holism. There is a meaningful positive relationship between the psychological hardiness and emotional intelligence. And also there is a significant negative relationship between the variables emotional intelligence and work holism. Also revealed that there is no significant difference between the psychological hardiness and work holism of the male and female. And no significant difference between, emotional intelligence of the male and female.

This paper reported a selective, sensitive, precise, accurate and rapid high-performance liquid chromatographic (HPLC) method for the determination of levofloxacin in human plasma. The method was validated according to ICH norm. Extraction procedure employed a single-step protein precipitation to isolate levofloxacin from the plasma followed by simple and rapid isocratic separation on a Zorbax SB-CN, a reversed-phase HPLC column and quantification by fluorescence detection at an excitation wavelength of 290 nm and emission wavelength of 456 nm. The method employed a weighing factor of 1/concentration2 and was linear from 0.3-20.39 µg/ml of levofloxacin in plasma with a coefficient of correlation over 0.998. The recovery, selectivity, linearity, precision, accuracy and stability of the method were evaluated from spiked human plasma samples. The overall precision and accuracy ranged between 1-7%. The method was successfully applied to subject plasma samples in support of a levofloxacin pharmacokinetic study. The overall utility of the method is reflected in its high sample throughput as processing of a batch can be done within 20 min followed by a short run time of 12 min, thus making the procedure suitable for pharmacological and pharmacokinetic studies of levofloxacin.

Today, e-commerce is the most fundamental tool for financial transaction in developed countries. According to the reality that today the traditional market could not respond to the humans ‘s needs, so that it has been attempted to change the strategies for advertisement in order to conquer customers ‘s behaviors. With regard to the distinctive characteristics in social networks to peruse customer’s behavior, there is a possibility for the organization by which they could utilize e-commerce in social networks and subsequently achieve their goals. In social networks, it has been attempted influence other customer only through other customers who are satisfied about their online shopping; through this many customers would be attracted to buy the products. Several recommendations through the particular system for customers have been represented in the social networks which this is possible only through share of information between users and their relationship with each other and also the similar characteristics of products and users’s behavior. In present paper, it has been attempted to introduce e-commerce and social networks, for this a brief description about both e-commerce and social networks is needed in order to reduce drop in social networks affiliated to e-commerce and peruse the hypotheses of research and data analysis through descriptive and inferential statistics. The descriptive statistics in this research involves the frequency table and central indices, and the inferential statistics involve Pierson‘s correlation coefficient as the statistical test in SPSS version 17 software.

Loads being induced on buildings are divided into two categories: vertical loads and lateral loads. Dead loads, live loads and snow loads are examples of vertical loads, while wind and earthquake loads are examples of lateral loads. Moreover, in light or tall buildings, effects of wind could be more serious. Effects of wind on structures depend on wind features, structure shape and environmental condition of structure. In this research, through doing a linear analysis on 54 steel moment frame models, wind force effect in valid codes such as NB CC-05, ASCE7-05 and national building codes of Iran are compared with one another. Moreover, effects of number of a building stories and the number of its bays on the value of wind force on a structure lateral response is studied as well. The results show that among all studied codes, ASCE7-5 has shown more values in evaluated parameters. Moreover, with the increase of number of stories of a building and its bays, factors such as ratio of stress in stories columns, overturning moment, base-shear force, index of stories drift and the amount of displacement at the center of mass will increase as well, based on rules of this code.

Reaction rate is the most important issue in Chemical kinetics which the objective of observation about reaction rate is to understand how different experimental conditions can influence the speed of a chemical reaction. Chemists are constantly intended to find the methods to increase the speed of reactions and at the short time gain the high efficiency by which a method to decrease and avoid the harmful chemical reactions would be appeared to work. Biological reactions are noticeably done slower than the chemical reactions. In chemical industry, processes are continuously developing, whereas the processes are not like this in biotechnological reactions. In fact, reaction rate due its high efficiency, heat consumption, low energy, high security, optimized usage of the materials, low wastage of chemical materials, and etc has gained importance. In present paper, the objective is to compare the biological and chemical reactions on the basis of reaction rate. To respond to the objective of the present paper, it has to be found out that which methods are helpful to increase the reaction rate.

In present paper, the stability curves for submarines at surface and submerged conditions have been presented in which the stability of ship has not been mentioned. The submarine due to the points such as diving and going under water are different from the ships. Three various conditions of stability in submarine have been considered which are as surface, transition and submerged conditions. The ballast tanks are provided for “submerging” process, so that the ballast tanks play important role in making the submarines stable and Equilibrium. The present paper is provided to give the results about the stability of submarine and it‘s difference points with the stability of ships.