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Articles by M. Soltani
Total Records ( 10 ) for M. Soltani
  M.H. Rad , M.H. Assare , M.H. Banakar and M. Soltani
  Eucalyptus camaldulensis Dehnh is one of the most important planted species in Iran, because of its fast growth and resistant to drought stress. Nonetheless, drought stress limited the suitable growth and decreases the pulp qualities and quantity. The aim of this study was to get information about the effects of drought stress on Eucalyptus camaldulensis Dehnh behavior of morph-physiology characteristics. Changes in Leaf Area Index (LAI), Specific Leaf Area (SLA) and Water Use Efficiency (WUE) of three-years old trees under three soil moisture regimes (100, 70 and 40% of field capacity) under lysimeteric conditions were studied. The trials were carried out during the years of 2006-2008 in Shahid Saduqi Desert Research Station of Yazd, Iran. Results showed that a significant reduction of soil moisture effects on the reduction of biomass production and leaf area index. Water use efficiency and specific leaf area significantly increased with increasing stress; however, not significant difference was observed between treatments of 70 and 40% of field capacity. Severe drought (40% of field capacity) reduced water use efficiency in wood production without any significant differences to 100% of field capacity treatment. This implied that a moderate level of drought stress improved water use efficiency in this species of eucalyptus in an arid climate. Severe drought stress induced a reduction in water use efficiency. Therefore, it can be concluded that appropriate growth of this species and an economic production of wood depends thoroughly on soil moisture content. As a result, severe drought stress will impair many morphological and physiological behaviors.
  K. Rahmani , M. Molavi , B. Naderi and M. Soltani
  This study considers a specific case of flowshop problems in which some jobs might not visit all the production stages. To tackle the problem, a hybrid metaheuristic which is a combination of electromagnetic algorithm and simulated annealing, called EMSA is presented. The optimization criterion is makespan. To evaluate the proposed hybrid metaheuristic, the study carries out a benchmark by which EMSA is compared against some dispatching rules as well as pure simulated annealing and electromagnetic algorithms in a fixed given computational time. All the results and analysis, obtained through the benchmark, show that EMSA is an effective algorithm for the problem.
  M. Gharibkhani , M. Pourkazemi , M. Soltani , S. Rezvani and L. Azizzadeh
  The aims of this study were to analysis the population genetic structure and genetic diversity among and between populations of Sander lucioperca based on microsatellite markers. For this purpose, 149 samples of adult pikeperch from three regions of Southwest Caspian Sea (Talesh Coasts, Anzali Wetland and Chaboksar Coasts) were collected. DNA was extracted and using 13 pairs of microsatellite primers, Polymerase Chain Reaction (PCR) was conducted. DNA bands were analysed using Biocapt and GenAlex software package. Out of 13 microsatellite primers, 11 loci were produced, in which 6 of them were polymorphic and 5 monomorphic. Analysis revealed that the average number of alleles per locus and observed heterozygosities were not statistically significant (p>0.05) for all 3 populations. The FST value between populations was low but significant (p<0.01), suggesting that the 3 populations are genetically differentiated. Deviation from Hardy-Weinberg equilibrium was obvious in most cases, mostly due to the deficiency of heterozygosities. The highest genetic distance was between Anzali Wetland and Chaboksar Coast populations. The data generated in this study provide useful information on the genetic variation and differentiation in populations of Southwest Caspian Sea pikeperch.
  H.A.E. Mousavi , M. Soltani , A. Khosravi , S.M. Mood and M. Hosseinifard
  The goal of the this study was to identify Saprolegniaceae fungi isolated from affected rainbow trout eggs in six hatcheries in Mazandaran Province (Northern Iran) from December 2006 to February 2007. The isolated oomycetes were classified according to their morphological characteristics on hemp seed media at 18-24°C. Seven fungal species belonging to three genera of Saprolegnia, Achlya and Brevilegnia were identified. The fungal species were morphologically characterized as S. parasitica, S. mixta, S. monilifera, Saprolegnia sp., A. oblongata, Achlya sp. and Brevilegnia sp. This is the first recorded oomycetes infection in rainbow trout hatcheries in Iran.
  M. Bahrekazemi , A. Matinfar , M. Soltani , B. Abtahi , I. Pusti and A. Mohagheghi
  The effects of egg retention time in the abdominal cavity after ovulation on egg viability were studied in Caspian brown trout (Salmo trutta caspius). Eggs were retained in the parental abdominal cavity for 40 days post ovulation. Partial volumes of eggs stripped from 10 individually identified females and fertilized with fresh semen obtained from 8 males at 10 days intervals for 4 stages. The biochemistry of the eggs and ovarian fluid were studied to investigate possible links with post-ovulatory oocyte aging. The eyeing and hatching rate of the eggs declined with over-ripening time: that is, the expected amounts (90.60±6.28% for eyeing and 86.33±6.82% for hatching) in newly ovulated eggs (0-10 days post ovulation) decreased to 0.67±1.34% and 0.49±0.98%, respectively, in over-ripened eggs (30-40 days post ovulation). However, larval abnormalities remained constant for 30 days after ovulation. Over the course of post-ovulation oocyte aging, the pH of the ovarian fluid significantly decreased and the concentration of glucose, protein, calcium, iron and aspartate aminotransferase activity significantly increased. Moreover, the concentration of protein, triglycerides and aspartate aminotransferase activity in the eggs also changed. The present study demonstrated that the best time to take Caspian brown trout eggs after ovulation at 7±0.6°C was up to 10 days post ovulation. Also, egg viability was related to both ovarian fluid parameters (e.g., pH, protein, aspartate aminotransferase, glucose, cholesterol, triglycerides, iron, calcium) and egg parameters (e.g., cholesterol, triglycerides, iron, aspartate aminotransferase) which can be used to detect egg quality defects associated with oocyte post-ovulatory aging.
  M. Tatina , M. Bahmani , M. Soltani , B. Abtahi and M. Gharibkhani
  This study was conducted in order to characterize the different levels of dietary vitamin C and vitamin E on some of hematological and biochemical parameters of sterlet. For this purpose 270 sterlet (Acipenser ruthenus) were divided into 18 groups. Three levels of vitamin E (0, 100 and 400 mg kg-1 diet) and vitamin C (0, 100 and 400 mg kg-1 diet) and their combination were used to prepare nine experimental diets. Each of nine experimental diets was fed to fish in 2 tanks (2 replicates). The fish were fed 3% of their wet b.wt. per day for a 100 days period. Blood samples were obtained from three fish of each tank at the end of experiment. The results reveal that Fish fed diets containing 100 mg kg-1 vitamin E and 400 mg kg-1 vitamin C (diet 7) had the highest WBC (p>0.05). Also, significantly higher RBC was observed in diets 3, 4, 5, 6 and 9 than those of the other diets in which different levels of each vitamin without any regulation exists. The hematocrit percentage did not differ significantly in fish fed the different diets (p<0.05). Also, there was no significant difference in the mean amount of total protein, cortisol, glucose and triglyceride between the fish fed with the different diets designed for this experiment (p>0.05). On the other hand, fishes fed diets without vitamin C but different levels of vitamin E (diets 3 and 6) had significantly higher amounts of cholesterol compared with fish fed with other diets.
  M. Heidarieh , M. Afsharnasab , M. Soltani , A. Dashtyannasab , S. Rajabifar , N. Sheikhzadeh and A.H. Tamimi
  During the period of culture, immunostimulants and even vaccines may provide potential methods to protect shrimps from opportunistic and pathogenic agents. This study was designed to show the effects of Ergosan and Vibromax vaccine against WSSV and Vibrio harveyii in juvenile Litopeaneus vannamei and even growth and survival rate in PL stage. Among different treatments in PL stage, Ergosan significantly enhanced the body weight while in group treated with Ergosan and Vibromax the enhancement in survival rate was observed. Survival rate was also assessed by challenging with Vibrio harveyii and WSSV in juvenile stage. All treatments with Ergosan and Vibromax vaccine showed significant enhancement in survival rate compared to the control groups. This study indicates that Ergosan and Vibromax could be used to promote the health status of shrimp during the period of culture.
  M. Soltani , N. Sheikhzadeh , H.A. Ebrahimzadeh-Mousavi and A. Zargar
  Influence of dietary administration of Zataria multiflora was evaluated on some immunological factors of common carp (Cyprinus carpio) under temperature less than optimum (16-17°C). Fish weighing 30-35 g were fed with Z. multiflora at different doses of 30, 60 and 120 ppm for a period of 8 continuous days. Serum lysozyme activity, bactericidal activity, total white blood cell population, total protein, globulin and albumin levels were measured on days 1, 2, 8, 15 and 23 after the essential oil administration. On day 23 post-administration the remaining fish from each group were intraperitoneally injected with formalin-killed whole cells of Aeromonas hydrophila (6x108cells mL-1) and antibody titer was measured 3 weeks later. The obtained results showed that this essential oil had some immunostimulatory effects on these immunological factors such as antibody titers, total white blood cells and serum bactericidal activity in some test groups especially at 30 and 60 ppm.
  H. Rajabi , Y. Filizadeh , M. Soltani and M.H. Fotokian
  This study was done to determine whether decomposing barley straw can be used to control the growth of cyanobacteria under field condition. Decomposing barley straw with two different amounts (40 and 80 kg m-2) was placed as sausage forms into the experimental ponds and the quantity of cyanobacterial genera was measured as indicator of growth. The quantitative measurements over five months showed that the straw was effective for controlling overall growth of cyanobacteria compared to controls. Barley straw was capable for inhibiting the growth of Microcystis, Anabaena and Aphanizomenon. In contrast, decomposing barley straw stimulated the growth of Oscillatoria, whereas Nostoc grown wasn’t affected by rotting barley straw. The results of this investigation indicated that barley straw could introduce an easy-to-use, practical and cost-effective method to assist water managers and, potentially, aquaculture ventures for managing the occurrence of cyanobacterial blooms in small freshwater basins.
  M. Soltani , K. Radkhah , M.S. Mortazavi and M. Gharibniya
  This study presents preliminary results on the early development and growth of the sea cucumber Holothuria leucospilota in the Bostane equatic ecosystem on the coast of Persian Gulf. For this purpose, spawning was induced by thermal stimulation after fertilization, embryos were incubated under optimal conditions (salinity between 38-40 and temperature 33 degrees) until reached the late uricholaria stage. In order to study the developmental stages and the timing of each stage including cleavage, morula, blastula, gastrula, early auricularia, auricularia, late auricularia the embryos were studied by light microscopic studies. Observations showed that after 120 h from fertilization time, the embryos developed to late auricularia stage.
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