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Open Access Article

1 - Survey of length - weight relationship of Astacus leptodactylus in shian dam Kermanshah province
P. Heshmatzad B. Mokhayer H. Emadi

This research was done on Astacus leptodactylus in Shian Reservoir of Kermanshah province from September 2010 to August 2011. The purpose of this research was survey on length - weight of Astacus leptodactylus. Total specimens were 182 crayfish (Astacus leptodactylus), More

This research was done on Astacus leptodactylus in Shian Reservoir of Kermanshah province from September 2010 to August 2011. The purpose of this research was survey on length - weight of Astacus leptodactylus. Total specimens were 182 crayfish (Astacus leptodactylus), including 126 male & 56 female from Shian lake dam. The sex ratio observed was 2.25:1(males /females). The average length in female and male were 133.86 12.99 &137.80 13.93 mm respectively, so there were significant difference between them (P<0.05).Maximum length measured in males and females were 182 &160 mm respectively. Also the average weight for male and female crayfishes were 75.21 24.15 & 91.9833.57 gr respectively. There were significant differences between them (P<0.01).Maximum weight between male and female crayfishes were 244 &120 gr.In this research length and weight of male crayfish were more than that of the female crayfish.The function coefficients obtained between them length and weight crayfish was from 2.1 Shian dam W=  256.52                                  Manuscript profile

Open Access Article

2 - Determination of Polycyclic aromatic hydrocarbons (PAHs) and investigation of sources in sediments in Anzali Lagoon
L. Salimi P. Eghtesadi Araghi S. Jamili A. Motalebi M. Rabbani

The objective of this study is to determine oil pollutants (PAHs) and investigate PAHsource in the sediments of Anzali Lagoon (in Mahrozeh & Selke stations) that can beof high importance from monitoring. Therefore, sampling is made in two wet and dryseasons at Mahro More

The objective of this study is to determine oil pollutants (PAHs) and investigate PAHsource in the sediments of Anzali Lagoon (in Mahrozeh & Selke stations) that can beof high importance from monitoring. Therefore, sampling is made in two wet and dryseasons at Mahrozeh & Selke stations. Finally, making use of GC, the relatedanalyses were performed to determine PAHs. The results showed that mean PAHs insediments of Mahrozeh were 34.839 in dry season and 61.439 ng/g dw in wet season,and in Selke were 80.432 in dry season and 45.439 ng/g dw in wet season. Theamounts of PAHs in Mahrozeh & Selke stations were lower than PAHs in sedimentsof the Persian Gulf countries, (except of UAE and Oman sediments).and also PAHsin Mahrozeh & Selke stations were lower than sediments of Caspian Sea. The sourceof PAHs in Mahrozeh & Selke sediments were both pyrogenic andpetrogenic.Statistical examinations didn’t show significant differences betweenPAHs in sampling seasons. Manuscript profile

Open Access Article

3 - Comparison of results of 2 three-dimensional numerical models to predict the movement of oil slick from an accidental spill in the Singapore Strait
Sh. Habibi Vahed Zanjani

This paper presents a three- dimensional numerical model for prediction of themovement of oil slicks from a spill accident in the Strait of Singapore. The results ofthis model are compared with the results of the model which was run by Chao et al.This model has previous More

This paper presents a three- dimensional numerical model for prediction of themovement of oil slicks from a spill accident in the Strait of Singapore. The results ofthis model are compared with the results of the model which was run by Chao et al.This model has previously been developed for prediction of movement of gascondensates from spill accidents in the Assalouyeh marine Oil and Gas region andhas achieved good results. The model is simulated based on the solution of theNavier-Stokes and the continuity equations. For the solution of advection term anupwind weighted multidimensional positive definite advection transport algorithm(MPDATA) used. This algorithm uses an explicit finite difference scheme with ananti-diffusive velocity for equilibrium diffusion. Comparison of the results of the twomodels showed good consistency that is considered for the introduced model as areliable verification. Manuscript profile

Open Access Article

4 - Comparison of results of 2 three-dimensional numerical models to predict the movement of oil slick from an accidental spill in the Singapore Strait
J. Khoshkhoo H. Khara H. Babaei M. Pedram Jarf

This paper presents a three- dimensional numerical model for prediction of themovement of oil slicks from a spill accident in the Strait of Singapore. The results ofthis model are compared with the results of the model which was run by Chao et al.This model has previous More

This paper presents a three- dimensional numerical model for prediction of themovement of oil slicks from a spill accident in the Strait of Singapore. The results ofthis model are compared with the results of the model which was run by Chao et al.This model has previously been developed for prediction of movement of gascondensates from spill accidents in the Assalouyeh marine Oil and Gas region andhas achieved good results. The model is simulated based on the solution of theNavier-Stokes and the continuity equations. For the solution of advection term anupwind weighted multidimensional positive definite advection transport algorithm(MPDATA) used. This algorithm uses an explicit finite difference scheme with ananti-diffusive velocity for equilibrium diffusion. Comparison of the results of the twomodels showed good consistency that is considered for the introduced model as areliable verification. Manuscript profile

Open Access Article

5 - Evaluating the effects of cinnamon (Cinnamonum zeylanicm) powder on growth indices, specific growth rate and survival rate of Green Terror (Andinocara rivulatus)
N. Mooraki Y. Roozy S. J. Zorrieh Zahra S. Safi M. Haghighi

The aim of this study was to Investigate the antioxidant effects of cinnamon powderas a growth additive in the diet of Green Terror Andinoacara rivulatus on growthperformance, feed conversion ratio and survival rate. For this purpose, a total of 180Green Terror fries (m More

The aim of this study was to Investigate the antioxidant effects of cinnamon powderas a growth additive in the diet of Green Terror Andinoacara rivulatus on growthperformance, feed conversion ratio and survival rate. For this purpose, a total of 180Green Terror fries (mean initial weight of 1.00± 0.5 g) were divided into fivetreatments (each treatment with three replicates and each replicate with 12 fry).Experimental treatments were fed with four diets with concentrations of 0.1, 0.2, 0.3and 1 percent of cinnamon powder compared to the control group (without cinnamonpowder) for 98 days. Growth parameters were calculated including weight gain(WG), length gain (LG), specific growth rate (SGR), feed conversion ratio (FCR),condition factor (CF), and survival rate (SR) in each treatment. The Data wereanalyzed in after normal distribution test by using one way ANOVA and Kruskal-Wallis tests. According to the research results, different levels of cinnamon powderdid not show significant statistical differences (P<0.05). But, there were significantdifferences in final weight gain and length gain between fish fed with one percent ofcinnamon powder compared with the control group (p>0.05). The fry fed with dietscontaining 1% of cinnamon powder with final mean weight (10.78±0.07 g) showedthe most weight gain compared to control group with a mean weight gain. Manuscript profile

Open Access Article

6 - Potential of Helianthus annuus for phytoremediation of cadmium from solutions
M. Emadi R. Moogouei M. Borghei

Phytoremediation is the use of members of different plant families to clean up orcontrol numerous kinds of pollutants, including heavy metals from marine andterrestrial environments. In this research, potential of Helianthus annuus L. plantspecies for remediation of Cd More

Phytoremediation is the use of members of different plant families to clean up orcontrol numerous kinds of pollutants, including heavy metals from marine andterrestrial environments. In this research, potential of Helianthus annuus L. plantspecies for remediation of Cd solution was tested. All experiments were designed inrandomized block (3 sample and one control) using phytoremediation technique withp>0.01 in statistics. Data were analyzed using SAS software package. Every flaxcontained three plants that exposed to two different concentrations of cadmiumnitrate solutions for a period of 15 days. Plants were incubated in 2 mgl-1 and 10 mgl-1 of cadmium nitrate solutions, and 70.53 ± 22.10 % and 92.26± 1.12 % Cadmiumions were removed from solution respectively. Uptake rate of Cadmium changedincreasingly with and increase in ion concentration of solutions. As heavy metalssuch as cadmium are main environmental pollutants and can create toxic effects onliving organisms, phytoremediation can be counted as an environmental friendlytechnique for waste waters remediation. The main aim of this research wasinvestigation on potential of Helianthus annuus L. for phytoremediation of Cdsolution. As a result Helianthus annuus L. plants can be used as a potential candidatefor phytoremediation of cadmium polluted solutions. Manuscript profile

Open Access Article

7 - Study of the relationship between relative humidity and the dewpoint depression in moist air on surface in period of five years (􀀕􀀓􀀓􀀗-􀀕􀀓􀀓􀀛) in stations of Mehrabad and North of Tehran
R. Haroutounian

In this study all tries have been done to simplify & to determine a linear relationbetween Relative Humidity and Dewpoint depression through the ClausiusClapeyron and the Relative Humidity Equations, and also by using dailyexperimental data in a period of􀀃􀀘 years More

In this study all tries have been done to simplify & to determine a linear relationbetween Relative Humidity and Dewpoint depression through the ClausiusClapeyron and the Relative Humidity Equations, and also by using dailyexperimental data in a period of􀀃􀀘 years (􀀕􀀓􀀓􀀗- 􀀕􀀓􀀓􀀛) from Tehran meteorologystations of North (an elevation of 􀀔􀀘􀀗􀀜 meters above sea level) & of Mehrabad (anelevation of􀀃􀀔􀀔􀀜􀀔 meters above sea level). This outcome has been obtained undercondition of the atmosphere and geographical ambient of Tehran city. In result, theobtained linear Equation was RH=100-5.18(T-Td) which showed a decrease of Tdincrease of Dewpoint depression by about 1oC for every %􀀘􀀑􀀔􀀛 decrease in RH.Therefore, there were several efficient usages for presented simple linear Equation.One of them was to estimate cumulus cloud base level (LCL – lifting condensationlevel). Considering the ratio changes of RH with Dewpoint depression, linearEquation for estimating Cumulus cloud base level which is Zlcl = 125(T-Td)changed in the form of Zlcl = 24.13(100-RH) . Manuscript profile

Open Access Article

8 - The effect of cadmium on some immunological indices in Silver carp (Hypophthalmichthys molitrix)
سورنا ابدالی S. Abdali A. Yousefi Jourdehi M. Yarmohammadi

In this study, 135 farmed Silver Carp fish with a mean weight of 50.6 ± 8 .6 gramsand a mean length of 16.2±3 cm , were exposed to concentrations of 0, 5 and 10mg/L of cadmium chloride (Cd(Cl)2) in 100 L aquariums for 96 hours. Eachtreatment had 3 replicat More

In this study, 135 farmed Silver Carp fish with a mean weight of 50.6 ± 8 .6 gramsand a mean length of 16.2±3 cm , were exposed to concentrations of 0, 5 and 10mg/L of cadmium chloride (Cd(Cl)2) in 100 L aquariums for 96 hours. Eachtreatment had 3 replicates and each replicate consisted of 15 fish. Blood from thefishes was taken every 24 hours. The number of white blood cells decreased in 72hours, but they increased in 96 hours (P<0.05). The number of neutrophils decreasedwith time. However, the number of eosinophils increased at concentration of 10 mgin 96 hours and reached to the maximum. The number of monocytes showedirregular fluctuations. Thus, increase of the heavy metal cadmium level in wateraffected immune system in Silver Carp negatively. Manuscript profile

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