Showing 6 results for Pirali
Volume 5, Issue 3 (12-2016)
Abstract
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The bacteriostatic and bactericidal activity of the ethanol extract of Kelussia odoratissima and chicory, Cichorium intybus L., against Streptococcus iniae and Lactococcus garvieae isolated from rainbow trout was investigated. Antibacterial efficiency of the plants was examined using agar well diffusion method and minimum inhibitory concentration. The MIC of the ethanol extract of K. odoratissima for S. iniae and L. garvieae were found to be 100 and 50 mg/ml, respectively and the MIC of the ethanol extract of C. intybus L for S. iniae was 50 mg/ml. Chicory didn’t have any inhibitory effect on L. garvieae.
Volume 7, Issue 4 (Fall 2019)
Abstract
Aims: Monitoring and zoning of water resources are one of the important principles in environmental planning and management. Therefore, considering the issues raised and the importance of Anzali wetland monitoring, the assessment of effective factors in zoning (GIS) along with TSI p, TSI n, and NSFWQI indices and the study of land use effects justifies the necessity of this study.
Materials & Methods: In this study, physicochemical parameters of water (phosphate, total nitrogen and total dissolved solids, dissolved oxygen, acidity, electrical conductivity, and BOD5 properties) and water quality indicators (TSI p, TSI n, and NSFWQI) were modeled using GIS interpolation functions. To determine the effect of land use, the partial and Pearson correlations coefficient were used.
Findings: According to zonation maps of annual mean values of qualitative parameters, the lowest dissolved oxygen content was in the eastern part of the wetland, the highest electrical conductivity, as well as BOD5 observed in the center of the north, in the east and north of the wetland, respectively. A survey of the total phosphate zonation map revealed the increasing trend from west to east of the wetland. The partial correlation analysis showed that the electrical conductivity, acidity and total dissolved solids were directly affected by inputs and effluent from the land use (p<0.05; p<0.01).
Conclusion: Based on the coefficient of determination, about 70% of the pollution derived from the use of wetlands surrounding and entering wastewater from agricultural fields, industrial and urban.
Volume 8, Issue 1 (Winter 2019)
Abstract
Aims: The aim of the present study was to investigate the immunoval prebiotic performance on growth indices, hematological parameters, and rainbow trout carcass composition.
Materials & Methods: Immunoval prebiotic was added to the diet in 4 levels of 0.05%, 0.1%, 0.15% and 0.2% and a diet without prebiotic was used to feed the control group. Each diet was randomly used for fish with an initial weight of 13.66±0.54g in three replicates.
Findings: After 8 weeks of feeding, the final weight of fish fed with 0.1%, 0.15%, and 0.2% prebiotics was significantly higher than the fish of the control group (p<0.05). The food conversion ratio in all treatments fed with prebiotic was significantly lower than the control group (p<0.05) and the lowest amount was in 0.15% treatment. The specific growth rate in fish fed with prebiotic was higher than the control group (p<0.05). Also, there were significant differences in the parameters of red blood cells, white blood cells, lymphocyte and neutrophil in fish fed with prebiotic diet and the control group (p<0.05). In the carcass analysis, protein content was significantly higher than the control group and the highest amount was seen in 0.1% treatment. The amount of fat and carcass ash decreased significantly in the control group and the lowest amount was observed in 0.15% treatment.
Conclusion: Addition of immunoval prebiotic with 0.2-0.15% rate to rainbow trout diet had positive effects on growth indices, blood parameters, and carcass composition
Volume 13, Issue 3 (8-2010)
Abstract
Objective: As we are approaching the global eradication of wild poliovirus, laboratory surveillance of poliovirus by the gold standard cell culture method becomes increasingly important. As there is a lot of concern about accurate and sensitive detection of imported wild and Vaccine Derived Polioviruses (VDPVs) in Polio-Free countries, in this study we assessed and compared the sensitivity of the cell lines used in polio laboratory simultaneously to standard poliovirus and Oral Polio Vaccine (OPV) polioviruses, to ensure the accurate detection of circulating and imported polioviruses in the society.
Materials and Methods: Cell sensitivity test was performed according to the World Health Organization (WHO), Polio Laboratory Manual for RD, L20B and Hep2 cell lines using 3 serotypes of standard monovalent and OPV polioviruses. The test was repeated every four passages for all cell lines.
Results: The sensitivity of L20B and Hep2 cell lines for standard poliovirus type 1 and 2 is more than sensitivity for the same types of OPV virus but for poliovirus type 3 it is vice versa. Also RD cell line is more sensitive to all 3 types of OPV virus. In addition, the test showed that increasing the passage number will decrease the sensitivity of all cell lines.
Conclusion: Using RD & L20B cell lines simultaneously (with low passage number) will assure us of sensitivity and accuracy of the cell lines for detection of circulating and imported polioviruses.
Pooya Pirali, Mehrdad Ghadami, Reza Babaei,
Volume 17, Issue 3 (5-2017)
Abstract
The medium caliber armor piercing projectiles, commonly being used against armored and aerial targets, have high kinetic energy and in practice, it is impossible to prevent these projectiles from penetration through different types of targets. So this is essential to demonstrate a solution to repel these projectiles by studying on behavior of the targets. In this study, numerical simulation of oblique penetration of medium caliber armor piercing projectile through the flat targets of GLARE3 2/1 and GLARE5 2/1 has been investigated by ABAQUS finite element software, and using explicit-dynamic solver. 625m/s and 1250m/s strike velocities and 0, 30, 45, and 60 degree strike angles have been studied. Damaged area have been investigated. To verify the solving method, an experimental equation, which has determined the penetration energy of a thin GLARE target, has been used. Results have shown that some special phenomena (e.g. asymmetric petalling, and small-cracks formation) appear when penetration occurs obliquely. This is also has been shown that lower strike velocity, and higher strike angle will result in higher target damage. Furthermore, delamination of target has been investigated.
Volume 26, Issue 6 (11-2024)
Abstract
One of the important innovations in sericulture is utilizing the hybrid silkworm eggs, which, with a clearer view about it, may assist extensional experts in the development of sericulture. This study aimed to explore the agriculturists’ knowledge of and attitude on the silkworm eggs distributed in Guilan Province. This is a quantitative, applied and descriptive-survey research. Due to the expansion of sericulture in Guilan Province, Langaroud and Shaft cities, which had the highest number of sericulturists, were chosen to do the multistage sampling. Then, through simple random sampling, 168 cases from Langaroud and 184 cases from Shaft were selected. Researcher-made questionnaires were filled in five categories (individual-professional characteristics, knowledge, and attitude, satisfaction, and factors contributing to satisfaction). Face and content validity was confirmed through consultations with 10 professors as well as with sericulture specialists and reliability was confirmed using Cronbach’s Alpha. Studies showed no significant difference in seri culturists’ knowledge and performance with regard to different types of distributed eggs. This indicated that seri culturists’ location had no impact on their attitude on the usage of the distributed eggs. However, the type of silkworm egg used affected the farmers’ attitude, resulting in a statistically significant difference. The majority of sericulturists were moderately satisfied with sericulture practices in Guilan Province. Furthermore, individual characteristics as well as access to facilities and financial and moral support most significantly affected their satisfaction. Despite the unique features of each egg type, sericulturists’ similar attitude of hybrid types indicated their poor and limited knowledge of raising the eggs.
