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Articles by S.A. Hosseini
Total Records ( 16 ) for S.A. Hosseini
  A. Ketabi and S.A. Hosseini
  In this research, a new method based on Singular Value Decomposition (SVD) is proposed to solve the problem of optimal placement of meters for static estimation of harmonic sources in a power system. Also, the Binary Genetic Algorithm (BGA) is used to solve the problem of optimization. IEEE 14-bus test system is provided to validate the measurement placement algorithm. It has been observed that the quality of estimation is improved and the Number of Observable Variable (NOV) is increased. Moreover, the BGA-based meter placement strategy yields the same solution as obtained from the complete enumeration technique but in shorter time.
  S.A. Hosseini and M. Bagheri
  The total removed radio-iodine in surface layer of the soil demands some factors. These factors consist of detention time of animal fertilizer in the soil, amount of animal fertilizer given to soil and depth of used animal fertilizer in the soil in which were unknown and so they were determined. In the lab an experimental system reproducing the environmental conditions of the contaminated areas were designed in pots and Radio polluted sub samples soil was treated with old feces of sheep and cow which are normally used as common fertilizers. Seven days from the contamination of sub soil samples treated with animal feces as fertilizers present at the time of inoculation, a drop up to 53%, with 1/4 volume of animal fertilizer: 3/4 volume of sub sample soil in radioactivity rate was indicated, after a series of washes which simulate one year`s rainfall. Radio iodine movement towards deeper soil layers, following old animal fertilizer treatments and their subsequent stabilization reduces bioavailability in the uppermost soil horizon.
  S.A. Hosseini
  It has been hypothesized that changes in thyroid cancer incidence is due to the genetic, environmental factors and radiation. This study investigated an important aetiological cause occurrence of thyroid cancer in residentials of south-eastern in Iran. Affected factors on thyroid cancer incidence has been researched by questionnaire in 100 families of two villages of Sistan and Balouchestan of Iran in 2007. These consist of radioactivity of drinking water, radioactivity of consumed nutrient and genetical factors. The questions of questionnaire are about consumed animal or plant food, happened thyroid cancer in near or far family and occurred thyroid cancer in individual. The questions in the questionnaire have been completed by replying the families. The results showed that radioactivity of drinking water, radioactivity of consumed food does not affect thyroid cancer occurrence, but genetical situation of families would take a part on thyroid cancer in these regions. The statistic method of Fisher Exact Test has been applied to confirm the results.
  S.A. Hosseini , A.A. Rakhsh Khorshid and M.E. Qureshi
  The study was conducted for the investigation of heat effect on radioactivity in the drinking water of chah-nimeh Station of Zaboul and Khatam hospital well for irrigating gardens of Zahedan in Iran. This drinking water supply has provided drinking water of Zahedan. The technique of Gamma Ray Counting was applied using I-125 detector. Activity concentration levels due to I125 was measured in 50 mL water samples collected at a volume of about 500 mL at the depth level of 0-25 cm with a step of 5 cm depth. It is resulted that activity concentration range of the concerned radio nuclides in case samples of Zaboul for 20, 30 and 40°C temperature of the drinking water were as follows: 6.08±0.08, 15±0.17 and 6.6±0.8 Bq L-1, respectively and control samples 5.6±0.08 Bq L-1 for any temperature. Radioactivity concentration from Khatam hospital well water case samples were 12±2, 14±2 and 13±5 Bq L-1, for 5, 10 and 15°C temperature, respectively. The slightly higher value of radio iodine in the drinking water of Zaboul city in case samples relative to control samples may be due to the use of temperature for case samples. Heating case samples causes raised radioactivity in Zahedan which support the result of drinking water. Knowledge of temperature variation effect on radio-iodine in water was particularly essential for estimating iodide group, especially I-129 transfer to fluvial systems and for successfully measuring radio-iodine in water studies Before the radiometric measurements, chemical analysis for concentration of Na, Ca and Mg was also carried out along with the measurement of electrical conductivity and pH of the water samples.
  S.A. Hosseini and M.I. Qureshi
  The soil as a carrier of different vital factors for plants is an important source of sustainable physical property variation. However, the effects of thermal use on radio iodine 125 in soil with its characteristics are poorly understood. Here, we have assessed the impacts of temperature on six types of soil from nine different parts with alternative climate in Iran. The method of experiments was mini-column approach in which somewhat more realistic soil conditions than the batch sorption technique are maintained. Electrical furnace was used for providing temperature within fifteen minutes. 445 Bq of 125I were added to soils. After shaking of 500 g soil sample in 140 rpm for 3 min, the radio iodine in soil sub samples was determined by gamma counting for 20 sec. Duplicate sub sample of soil show that the relative error due to homogenization and analysis is less than 10%. In order to elucidate the influence of the temperature itself on the 125I values, sub samples soils were heated at different temperature by electrical heater but no radio iodine were added to them. The observed variability among soils was considerable. Yet, significant temperature impacts on radio iodine 125 abundance or reduction were observed in soils. Also, we observed that the radio iodine adsorption values decreased in 5, 10 and 15°C in humus. In contrast, it increased in clay soil, coarse sand - clay soil, loamy soil, fine sand-clay soil, salty soil, fine sand-coarse sand soil in 20, 30 and 40°C temperatures. These results demonstrate that soil thermal energy can affect radio iodine adsorption in the soil. Knowledge of physical property as temperature variation effect on radio-iodine adsorption of soils is particularly essential for estimating iodide group, especially I-129 transfer to fluvial systems and for successfully measuring radio-iodine enthalpy and entropy in soil studies.
  S.A. Hosseini and M. Jayapalan
  Water, soil and plants sources are concentrators of radioactivity and constitute a good indicator for radioactive contamination in the arid environment. There were few data for radioactivity in arid, semi-natural ecosystem. Radioactivity of soil, water and plant in the eastern arid border of Iran was unknown. This has been measured in sources of plant, soil and water as samples for assessment of radioactivity. The results showed that the mean radioactivity in plant is 772±95 Bq per kg dry plant, in soil is 268±50 Bq per kg dry soil and in water is 216±31 Bq per liter waste. Therefore, radioactivity concentration of ionizing radiation in plants is more than water and soil sources in eastern arid border of Iran, Sistan and Blouchestan province.
  S.A. Hosseini
  In order to determine contribution of plant in radioiodine uptake, soil-to-plant concentration ratios of radioiodine from soil to agricultural crops are needed and so we carried out radiotracer experiments. The mean values of concentration ratio (on a wet weight basis) of radioiodine from soil to edible parts of crops in podzol were as follows: lentil, 0.054; pea, 0.012; wheat, 0.040 and red bean, 0.068. The mean values of the radioiodine concentrations in plant parts of red bean, lentil, wheat and pea (on a wet weight basis) were 4.32, 3.43, 2.64 and 1.0 kBq kg-1, respectively. We also studied the distribution of the radioiodine in the crops. There was a tendency for the concentration ratio of stem to be higher than those of root and leaves. A very high concentration ratio was found for root of red bean; because this plant was studied at a growth stage different from that of the other plants. The data obtained in this study should be useful in assessing the behavior of long-lived 129I (half life: 1.57×107 year) released from nuclear fuel cycle.
  S.A. Hosseini
  Naturally Occurring Radioactive Material (NORM) could be contributed in radioactivity pollution of environment. The natural radioactivity concentration in soil, drinking water, certain food items samples of Zahedan city in Iran and absorbed dose across near by 5 Sistan and Blouchestan cities in Iran have been determined using gamma spectrometry and Multi Rad Low Level (MRLL) detector, respectively. Results show that the concentrations of 40K, 238U and 232Th in the samples of the city varied from 396±38.4 to 576±57.4 Bq kg-1 with a mean of 473.3±40.7 Bq kg-1 for 40K, whereas for 238U and 232Th values varied from 20.6±2.3 to 24.7±3.6 Bq kg-1 with a mean of 21.9±2.8 Bq kg-1 and from 28.9±3.3 to 36.5±3.6 Bq kg-1 with a mean of 33±3.7 Bq kg-1, respectively. The absorbed dose rate in the air across Zahedan cities border ranged between 16±5 nGy h-1and 300±44 nGy h-1 and the gross mean was 158.0±24.5 nGy h-1. It can be concluded that no risk threat the residents around and center Zahedan city and in above mentioned border.
  A. Parsakhoo and S.A. Hosseini
  In this study, the wheel ruts frequency and dimensions were investigated according to geographical aspects, longitudinal gradient and surfacing layer of rural roads in Denji Kola village, Mazandaran Province, Iran. Ruts were divided into shallow and deep wheel ruts. Results showed that the ruts length and area were significantly affected by longitudinal gradient of rural roads (p<0.0001). Ruts length in longitudinal gradient class 8-12% was significantly more than other classes (p<0.05). The mean of rut length in this class was 8.19 m. The deep ruts frequency in longitudinal gradient class 0-4% was more than shallow ruts, whereas the number of shallow ruts was more than deep ruts in other classes. The effects of geographical aspect on ruts length (p<0.0001), ruts width (p = 0.0019) and ruts area (p<0.0001) was significant. Although, the ruts width and depth on gravel-grassed surface was more than other surfacing layer, the number of ruts in this surfacing layer was less than bare soil and graveled surfacing layer. Thus, thickness layer of gravel which has been covered by grass is the best mixture for surfacing layer of rural roads.
  S.A. Hosseini , S. Jamili , T. Valinassab , G. Vosoghi and S.M.R. Fatemi
  This study, being conducted in 2006-2007, attempts to investigate its biological habit and characteristics in Iran`s water of the Persian Gulf. For the sampling purpose, three major landings namely Bushehr, Deylam and Genaveh were selected to obtain samples from commercial catches. The sampling is composed of 655 males and 515 females during a twelve month period. By studying the feeding through the counting method, it is revealed that, Liza subviridis characterized by 42.8% and Sepia pharaonis by 8.4% made the highest and lowest stomach content, respectively. The findings showed that male fish in smaller size will mature sooner than females specimen but this sex ratio or proportion was not significantly different except during October and September. Such a difference between male and female in different months could be originated from longer residing of female group in spawning ground compared to male group. The earlier spawning lasted during September-October and there was a peak of spawning in feeding in August. The lowest fat proportion for both male and female genders was reported 0.10 and 0.11, respectively in October; but the highest level of condition factor was reported to be 0.59 and 0.63 during November and June.
  S.A. Hosseini , C.R. Saad , M.S. Bourani , H.M. Daud , S.A. Harmin , H. Zokaei Far and H. Abdi
  Experiments were conducted to determine the effects of weight on the ionic regulation ability of reared Rutilus frisii kutum fingerlings during adaptation to the seawater and downstream migration. Accordingly, the ionic regulation ability of Cl-, K+, Na+ and Mg2+ in kutum fingerlings with weights of 1, 3, 5 and 7 g in three different salinities, that is 13‰ (the Caspian Sea salinity), 7‰ (estuarine area) and fresh water (as control, 0.3-0.5‰), were assessed. The blood samples were provided before being transferred as control (fresh water) and during adaptation to the sea and estuary water in a period of up to 336 h by a pooling method. The measurements of ions were carried out for blood serum Na+ and K+ and alsoplasma Cl-1 and Mg2+ by photometric methods. This investigation showed that ionic regulatory ability of kutum fingerlings depends on their weights. Results of ionic changes during the duration of 336 h (14 days) proved that unlike kutum fingerling with weights of 3, 5 and 7 g, the ionic regulation system in 1 g fingerlings were not able to expel excess ions. Further 1 g kutum were not physiologically ready (smolt) for downstream migration.
  H. Abdi , A. Christianus , E. Ramezani- Fard , C.R. Saad and S.A. Hosseini
  Catfish species are popular fish group consumed in Malaysia. African catfish, Clarias gariepinus and Asian redtail catfish, Hemibagrus nemurus are two of these catfish species. Unfortunately, some parts of these fish are removed during processing. This includes the liver which contained considerable amount of extractable lipid with both monounsaturated and polyunsaturated fatty acids. The fish samples were purchased and transported in ice box to the laboratory. Liver was extracted and analyzed for crude protein, crude lipid, moisture, ash, carbohydrate contents and fatty acid composition. Results were compared between male and female C. gariepinus and H. nemurus. Liver of female H. nemurus contained the highest amount of ash, crude lipid and carbohydrate and the lowest amount of moisture. Male H. nemurus had the lowest amount of protein, ash and crude lipid content. Moisture was found to be the highest in male C. gariepinus. The main fatty acid content of Asian redtail catfish and African catfish liver were C12:0, C14:0, C15:0, C16:0, C16:1, C17:0, C18:0, C18:1n-9, C182n-6, C183n-3, C204n-6, C24:1, C205n-3, C225n-3, C226n-3. The most abundant fatty acids in both species were oleic acid (18:1n-9) and palmitic acid (16:0). In conclusion, this study showed that H. nemurus and C. gariepinus, are two valuable source of protein and polyunsaturated fatty acid.
  S.A. Hosseini , F. Rahim and K. Mola
  The aim of this study was showing the suppressive effect of fish oil supplementation on clinical symptom in rheumatoid arthritis. Forty two patients with Rheumatoid Arthritis (RA) entered a trial to determine the clinical and biochemical effects of dietary supplementation with fractionated fish oil fatty acids. A randomized study design with 4 and 8 week treatment periods were used. Treatment with non-steroidal anti-inflammatory drugs and with disease modifying drugs was continued throughout the study. There were significant improvement of RF (p = 0.009), ESR (p = 0.003) and serum CRP (p = 0.002) after 8 weeks fish oil supplement, but after 4 weeks the RF (p = 0.004) only showed significant improvement. This study shows that dietary fish oil supplementation is effective in suppressing clinical symptoms of rheumatoid arthritis.
  S.A. Hosseini , H. Lotfollahian , A. Kamyab and A. Mahdavi
  A trail was conducted to investigate the effect of yeast (Saccharomyces cerevisiae SC47) utilization on the commercial layer hen’s performance. The experiment consisted of 5 diets (0, 0.25, 0.5, 0.75 and 1 g Yeast per kg diet) with five replicates each containing 15 laying hen’s hy-Line W36 from 25 to 78 week of age. The randomized complete design was used for this experiment. During the experiment egg weight, egg production (%), Egg Mass, feed conversion and egg quality were measured daily and every month, respectively. The data analyzed in five periods (25-32, 33-44, 45-58, 59-78 and 25-78 week). The result showed that using Yeast had no positive effect on feed intake in all of the periods (p<0.05). Duncan test showed that feed intake in 59-78 weeks for group of 3 (0.5 g kg-1 Yeast) was higher (102.06 g) than other groups. Egg production and average egg weight didn’t affected by using Yeast, but in 25-78 weeks, egg production in 4 and 5 treatments was 2.43 and 2.06% higher then control groups, respectively. In all of the periods egg mass in groups of 4 and 5 was higher than control but only in 59-78 weeks this difference was significant. In this period egg mass in 4 and 5 treatments was 6.98 and 8.42% higher than control. Yeast had no positive effect on feed conversion, but the group of 5 (1 g kg-1 Yeast) had a best feed conversion. Addition of Yeast in Commercial Layer hen diet was no effective on egg specific gravity, eggshell thickness, haugh unit, egg breaking strength and eggshell quality (p<0.05). Egg special gravity in group 2 was higher than group 3 (p<0.05). Haugh unit in group 5 was higher than other groups in all of the periods but this difference in 25-32 and 59-78 weeks was significant (p<0.05). The food intake cost in 25-78 weeks was 21, 11.9 and 17.65 Rials less for each kg egg in groups 3, 4 and 5, respectively.
  H. Lotfollahian and S.A. Hosseini
  In a trail the Apparent Metabolizable Energy (AME), Apparent Metabolizable Energy corrected to Nitrogen retention (AMEn), True Metabolizable Energy (TME) and True Metabolizable Energy corrected to Nitrogen retention (TMEn) content of some feeding stuffs for poultry were determined with cockerels. The test materials consisted of feed grade Oak (Quercus faginea), Fig (Ficus carica), Olive (Olea europea) pulp with nucleolus and without nucleolus. The result showed that Oak, Fig, Olive pulp with nucleolus and without nucleolus according to their component can be noticed as an energy sources. Their crude protein was low. The nitrogen- corrected Apparent Metabolizable Energy (AMEn) values for Oak, Fig and Olive pulp with nucleolus and without nucleolus were 2775.04±29, 2558.7±35, 1347.05±64 and 3052.33±122 Kcal kg-1 dry matter, respectively. The nitrogen-corrected True Metabolizable Energy (TMEn) value for the respective feeding stuffs were 3177.99±30, 2999.06±33, 1537.02±59 and 3243.34±126 Kcal kg-1 dry matter.
  A. Parsakhoo and S.A. Hosseini
  In this study the regeneration and trees damages caused by bulldozer earth working operations were examined for a road construction project in the Lolet Forest, Mazandaran Province, Iran. Damages were assessed within the 10000 m2 plot along 400 m roads in each of slope classes 30-40, 40-50, 50-60 and 60-70%. Damaged regeneration were classified into stem wounds, broken stems, leaning and interment and uprooted. Damaged trees were classified into crown injury; stem wounds, felled and uprooted trees. The wounds areas were also classified into 0-300, 300-600 and more than 600 cm2. Results showed that the most common type of damage to regeneration was leaning and the majority of this damage occurred in diameter classes of 0-2.5 and 2.5-7.5 cm. In higher slope classes a greater number of regeneration and trees were damaged. Totally, 87% of regenerations were damaged by bulldozer earth working. Fifty percent of trees were damaged in each of slope classes: 7% were wounded (bark removed), 13% were crown injured and 30% were felled or uprooted. The wounded trees percentage in class 0-300 cm2 was more than other wound classes. Minimizing regeneration and trees damages during earth working appears to allow a more rapid recovery of vegetation on bulldozed soil.
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