Razavi R.,Shahid Bahonar University of Kerman |
Hosseini S.M.A.,Jiroft University |
Ranjbar M.,Shahid Bahonar University of Kerman
Iranian Journal of Chemistry and Chemical Engineering | Year: 2014
Titanium dioxide is widely used in the manufacturing of paints, varnishes, lacquer, paper, paperboard, printing inks, rubber, floor covering, and ceramics and so on. White titanium dioxide pigment has been produced by two main processes. The sulfate and the chloride processes. Each of these two routes requires different feedstocks. However, economic and environmental pressures are shifting the world balance of titanium dioxide production away from sulphate based manufacture towards the more cost effective and cleaner chloride route. According to usage of titanium dioxide, the nano sized TiO2 was produced by the sulfuric acid and hydrocholoric acid leaching by using Sonochemical technique during the leaching process. No adding extra materials and no milling after precipitate, no vaporization during the leaching are advantages of this work which reduced the processes of leaching. All of determination techniques of particle size (Zeta Sizer, XRD, SEM, and TEM) prove this matter. The particles sizes of nano TiO2 which was leached by HCl and H2SO4 are 83 and 85 nm respectively. © 2017, Jihad Danishgahi. All rights reserved.
Rashidi A.,University of Kurdistan |
Mokhtari M.S.,Jiroft University |
Esmailizadeh A.K.,Shahid Bahonar University of Kerman |
Asadi Fozi M.,Shahid Bahonar University of Kerman
Small Ruminant Research | Year: 2011
Genetic and environmental (co)variance components for productivity traits in Moghani sheep were estimated using data from 1344 ewes. The data were collected in the Jafarabad breeding station, north-east of Iran, during a 13-year period (1995-2008). The studied traits were litter size at birth (LSB), litter size at weaning (LSW), litter mean weight per lamb born (LMWLB), litter mean weight per lamb weaned (LMWLW), total litter weight at birth (TLWB) and total litter weight at weaning (TLWW). A model including direct additive genetic effects as well as permanent environmental effects related to repeated records of ewe was the most appropriate model for all the studied traits. Genetic parameters were estimated applying restricted maximum likelihood (REML) procedure. Direct heritability estimate for LSB, LSW, LMWLB, LMWLW, TLWB and TLWW were 0.11, 0.02, 0.15, 0.07, 0.07 and 0.06, respectively. Corresponding values for repeatability estimates were 0.16, 0.19, 0.18, 0.11, 0.13 and 0.09. Genetic correlations between the studied traits ranged from -0.99 for LSB-LMWLB and LSW-LMWLB to 0.99 for LSB-TLWB. Phenotypic and environmental correlation estimates were generally lower than those of genetic ones. Estimates of permanent environmental correlation among traits were positive and medium to high. Although low direct heritabilities were estimated for the reproductive traits, as these traits are of interest then they should be included in a breeding program. © 2010.
Benvidi A.,University of Yazd |
Jahanbani S.,University of Yazd |
Akbari A.,Jiroft University |
Zare H.R.,University of Yazd
Journal of Electroanalytical Chemistry | Year: 2015
We have developed a modified magnetic bar carbon paste electrode in combination with 1-[2,4-Dihydroxy-5-(phenylazo-4-sulphonic acid)phenyl]-1-phenylmethanon (DPSPP) and reduced graphene oxide/Fe3O4 nanomaterials which was named MBCPE/DPSPP/RGO/Fe3O4NPs for the determination of hydrazine and hydroxylamine. The modified electrode was characterized by various techniques such as voltammetry, scanning electron microscopy (SEM), electrochemical impedance spectroscopy (EIS) and the influence of different variables on the response of sensor was studied, too. The electrochemical behavior of hydrazine was investigated at MBCPE/DPSPP/RGO/Fe3O4NPs by cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques in a phosphate buffer solution (pH 7.0). MBCPE/DPSPP/RGO/Fe3O4NPs as a novel electrochemical sensor exhibited catalytic activity toward the oxidation of hydrazine. The potential of hydrazine oxidation was shifted to more negative potentials, and its oxidation peak current increased on the modified electrode. The electrocatalytic current of hydrazine showed a good relationship in the concentration range of 120.0-600.0 nM, with a detection limit of 40.0 nM. In addition, simultaneous determination of hydrazine and hydroxylamine was studied at the proposed electrode. Voltammetric investigations showed a linear range of 10-155.0 μM with a detection limit of 3.4 μM for hydroxylamine. The proposed electrode was applied for determination of hydrazine and hydroxylamine in water samples, too. © 2015 Published by Elsevier B.V.
Barazandeh A.,Jiroft University |
Moghbeli S.M.,Jiroft University |
Hossein-Zadeh N.G.,Guilan University |
Vatankhah M.,Agriculture and Natural Resources Research Center
Livestock Science | Year: 2012
A number of 10,606 body weight (BW) records of 3908 Raini goats from 153 sires and 1072 dams were used to estimate direct and maternal genetics, direct permanent environmental, and maternal permanent environmental effects on growth from 1 to 410. days of age. The data were collected during 1996 to 2007 from a flock of Raini goat in breeding station in Kerman province; Iran. Random regression (RR) models, including age of dam, sex of kid, type of birth, month and year of birth were used as fixed effects. Also, animal, dam, animal permanent environmental, and maternal permanent environmental as random effects, were fitted to the data using second to fifth order of fit in different combinations of Legendre polynomials for age of kid. Comparisons among different models, based on the Akaike's information criterion, and the Bayesian-Schwarz information criterion were used to select the best model for analyses. The best fitting RRM was the model with a Legendre polynomial of fifth order for direct and maternal genetic effects and fourth order for individual and maternal permanent environmental effects. Direct heritability increased from 0.14 at 20. days of age to 0.38 at 150. days of age then decreased suddenly to 0.18 at 270. days of age and increased thereafter. Maternal heritability increased (except 20. days) to 150. days and then declined moderately until 360. days of age. Genetic correlations among weight at various ages were positive, low to high and ranged from 0.10 between 20 and 360. days of age to 0.99 between 70-90 and 150-180. days of age. The genetic and phenotypic correlations between weights increased with decreasing interval between weights. The low value of genetic correlation (0.10) between early (20. day) and late (360. days) weights implies that early weights are not under the same genetic control as weights at older ages. © 2011 Elsevier B.V.
Hosseini A.R.,Jiroft University |
Rahimi R.,University of Tehran |
Mirghaed A.T.,University of Tehran
Comparative Clinical Pathology | Year: 2014
In this study, the histamine concentration in the muscle tissue of whole rainbow trout (Oncorhynchus mykiss) was monitored during ice storage for a period of 18 days (0, 3, 6, 9, 12, 15 and 18th day). Results showed that the concentration of histamine increased linearly (P < 0.05) during ice storage (except the 18th day). Histamine was not detected at the first and third day of storage. The first detection of histamine was in the sixth storage day. Initial concentration of histamine was 1.09 μg/g and finally reached to 4.30 μg/g. The maximum histamine levels was reported to be below the Australian Food Standards Code (2001) safe level (200 mg/kg), and histamine levels were low even after 18 days of storage and remained below the Food and Drug Administration (2001) tolerance level during ice storage. It seems that the levels of histamine could be a suitable freshness indicator of rainbow trout during ice storage. © 2013 Springer-Verlag London.
Barazandeh A.,Jiroft University |
Moghbeli S.M.,Jiroft University |
Vatankhah M.,Agriculture and Natural Resources Research Center |
Hossein-Zadeh N.G.,Guilan University
Tropical Animal Health and Production | Year: 2012
Survival records from 1,763 Kermani lambs born between 1996 and 2004 from 294 ewes and 81 rams were used to determine genetic and non-genetic factors affecting lamb survival. Traits included were lamb survival across five periods from birth to 7, 14, 56, 70, and 90 days of age. Traits were analyzed under Weibull proportional hazard sire models. Several binary analyses were also conducted using animal models. Statistical models included the fixed class effects of sex of lamb, month and year of birth, a covariate effect of birth weight, and random genetic effects of both sire (in survival analyses) and animal (in binary analyses). The average survival to 90 days of age was 94.8%. Hazard rates ranged from 1.00 (birth to 90 days of age) to 1.73 (birth to 7 days of age) between the two sexes indicating that male lambs were at higher risk of mortality than females (P < 0.01). This study also revealed a curvilinear relationship between lamb survival and lamb birth weight, suggesting that viability and birth weight could be considered simultaneously in the selection programs to obtain optimal birth weight in Kermani lambs. Estimates of heritabilities from survival analyses were medium and ranged from 0.23 to 0.29. In addition, heritability estimates obtained from binary analyses were low and varied from 0.04 to 0.09. The results of this study suggest that progress in survival traits could be possible through managerial strategies and genetic selection. © 2011 Springer Science+Business Media B.V.
Nasri M.,Islamic Azad University at Ardestan |
Sardoo F.S.,Jiroft University
World Academy of Science, Engineering and Technology | Year: 2011
Flood is a natural demolishing phenomenon, forecast of which is of high importance. Estimation of rainfall-runoff and flood is a difficult task due to influence of different factors. So far, different methods have been proposed to analyze such phenomena. This study was conducted in the basin of Sheikh Bahaei Dam in Isfahan Province to prioritize areas influencing the flood peak discharge or in other words, to specify areas with highest flood potential. HEC-HMS hydrological model was used to simulate the flow in the hydrological units of the area. The results showed that areas near the output point of the basin play the highest role in flood development and should be placed in the first priority of watershed management. The results can remarkably contribute to the monitoring system of the area.
Hedayati A.,Gorgan University of Agricultural Sciences and Natural Resources |
Hosseini A.R.,Jiroft University
Comparative Clinical Pathology | Year: 2013
There are a large number of chemicals, which are released into the Persian Gulf, capable of interfering with the synthesis and action of natural thyroid and testosterone hormones. These are considered as endocrine disruptors. In the present study, sea bream was exposed to four different concentrations (10, 20, 40, 80 μg l-1) of the widely used mercury chloride in a laboratory condition, and effects on the concentrations of serum testosterone and thyroid (T3 and T4) were assayed. Mercury chloride exhibited significant effects on both T3 and T4 (P < 0.5) concentration of serum. No significant changes occurred in the concentration of serum testosterone (P > 0.5); however, exposure to higher mercury chloride concentration showed suppressive effects on serum testosterone. Results of the present experiment indicated that mercury chloride induced alteration in the structure of the gonad and thyroid and can be considered as an endocrine disruptor substance in yellowfin sea bream. © 2012 Springer-Verlag London Limited.
Mahmoudvand M.,Islamic Azad University |
Abbasipour H.,Shahed University |
Rastegar F.,Shahed University |
Hosseinpour M.H.,Shahed University |
Basij M.,Jiroft University
Archives of Phytopathology and Plant Protection | Year: 2012
The toxicity of vapours of the essential oil of Ferula gummosa, Elettaria cardamomum and Salvia officinalis on the adults and larvae of some stored product pests was investigated. The bioassays were carried out in 70 mL vials containing 10 individuals of each insect. The LC 50 values of fumigant bioassay after 24 h were calculated. Results indicated that the effect of the essential oil of F.gummosa was stronger than E. cardamomum, S. officinalis on stored pests. Also fumigant toxicity of S. officinalis on Sitophilus oryzae was similar to that of Sitophilus granarius adults. On the other hand, R. officinalis had a good effect on adults of Tribolium castaneum and larvae of Ephestia kuehniella. According to our results and good effect of these compounds, they will be a safe replace for chemical compounds in the future. © 2012 Taylor and Francis Group, LLC.
PubMed | Islamic Azad University at Izeh, Shahrekord University, Jiroft University and Khorramshahr Marine Science and Technology University
Type: Journal Article | Journal: Journal of parasitic diseases : official organ of the Indian Society for Parasitology | Year: 2016
The present study was carried out to investigate the effects of parasites, monogenea,