2024-03-29T15:57:45+03:30 http://sjku.muk.ac.ir/browse.php?mag_id=39&slc_lang=en&sid=1
39-1272 2024-03-29 10.1002
Scientific Journal of Kurdistan University of Medical Sciences SJKU 1560-652X 2345-4040 10.61186/sjku 2014 19 1 Evaluation of early maladaptive schemas of individuals attempting suicide by self-poisoning Marjan HelmiKhamirani Narges Shams Alizadeh Farzin Rezaei frrezaie@yahoo.com Background and Aim: According to Beck's cognitive model, the experiences of the people result in development of assumptions or schemas about the self and the world. These assumptions contribute to the organization of perception and control and appraisal of behavior. Some of these assumptions are rigid and resistant to change and therefore are dysfunctional. The purpose of this study was to determine the schemas of individuals attempting suicide by self-poisoning according to Beck's cognitive model and determine their relationship to suicide. Material and Methods: This was a case–control study. Our case group (n=204) included the patients admitted to Tohid Hospital due to suicide attempt. Control group consisted of healthy individuals (n=204) who had been matched with case groups. The participants completed Young Schema Questionnaire and Beck Depression Inventory.Collected data were analyzed by means of logistic regression model and correlation test. Results: Results showed that enmeshment/undeveloped self-unrelenting standards/ hypercritical schemas can be risk factors for suicide attempts. Depression had correlation with emotional deprivation, abandonment/instability, social isolation/alienation, and self-sacrifice schemas. In non-depressed participants, undeveloped self and emotional deprivation schemas were associated with suicide attempt. Conclusion: In general, undeveloped self-schema might contribute to suicidal behavior independently. Emotional deprivation both directly and indirectly (by inducing depression) could precipitate suicidal behavior. Received: Apr 16, 2013 Accepted: Dec 8, 2013 Conflict of interest: None declared Early maladaptive schema Suicide Depression Young questionnaire. 2014 4 01 1 11 http://sjku.muk.ac.ir/article-1-1272-en.pdf 10.22102/19.1.1
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Scientific Journal of Kurdistan University of Medical Sciences SJKU 1560-652X 2345-4040 10.61186/sjku 2014 19 1 Effect of whole-body vibration training on physiological indices and cardiovascular fitness in elderly veterans Asghar Tofighi atofighi2002@yahoo.com Samaneh Dastah Solmaz Babaei Javad Nozad Background and Aim: Whole-body vibration training as an exercise method and as a non-drug treatment strategy has been used for improvement of cardiovascular fitness. The aim of this study was to examine the effect of whole-body vibration training on vo2max, body fat percentage, and lipid profile and serotonin level in elderly veterans. Material and Method: In this semi experimental study, forty veterans with 25 percent damage (age range 55-65 years of age) were selected and randomly divided into two experimental and control groups. Subjects in the experimental group performed whole-body vibration training for a period of 12 weeks with frequency of 30-35 Hz and amplitude of 1/7 mm. Our control group did not participate in any regular exercise program during study period. Serotonin levels, VO2max, percentage of body fat, BMI and lipid profile were measured before and after training for both groups. Data were introduced into SPSS18 software and analyzed by t-tests at P<0/05. Result: After 12 weeks of whole body vibration training, we found significant decrease in the percentage of body fat, BMI and lipid profile and significant increase in VO2maxand serotonin in the experimental group (P<0.05). Conclusion: Whole-body vibration training in the elderly veterans as a new training method can lead to improved cardiovascular function. Received: Apr 22, 2013 Accepted: Nov 24, 2013 Conflict of interest: None declared Whole-body vibration training Serotonin Fat percentage Vo2max Elderly veterans. 2014 4 01 12 20 http://sjku.muk.ac.ir/article-1-1273-en.pdf 10.22102/19.1.12
39-1274 2024-03-29 10.1002
Scientific Journal of Kurdistan University of Medical Sciences SJKU 1560-652X 2345-4040 10.61186/sjku 2014 19 1 Evaluation of imprinting pattern in patients with obsessive– compulsive disorder (OCD) in sanandaj Azad Maroufi Masoomeh Zarei Fardin Gharibi fardin.gharibi@muk.ac.ir Background and Aim: Obsessive-compulsive disorder is (OCD) one of the serious problems which imposes high economic and social expenses on the society. The aim of this study was to identify a probable transmission pattern in the families of the patients with OCD. Material and Methods: This cross sectional study included 150 patients in the psychiatric centers in Sanandaj. Diagnosis of the disorder was confirmed by a psychiatrist. History of signs and symptoms of OCD in the maternal and paternal relatives of the patients, including the type, severity and duration of the signs and symptoms were recorded in a questionnaire for every patient. We used descriptive statistics to determine relative and absolute frequencies, and chi-square test to analyze the relationship among the nominal variables. Results: The results of this study showed that contamination and pathological doubt were the most frequent patterns. Washing was the most frequent pattern of obsession which was observed in 42% of the patients. The family history of OCD were18% in paternal and 44.7% in maternal relatives. 35.3% of the patients had no family history of OCD. Conclusion: The results indicated that family history of OCD, especially maternal, is important and OCD is more likely to occur in the subjects with family history of this disorder. However more studies are needed to identify the exact genetic pattern. Received: Jun 23, 2013 Accepted: Oct 30, 2013 Conflict of interest: None declared Obsessive-compulsive disorder Imprinting Transmission 2014 4 01 21 29 http://sjku.muk.ac.ir/article-1-1274-en.pdf 10.22102/19.1.21
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Scientific Journal of Kurdistan University of Medical Sciences SJKU 1560-652X 2345-4040 10.61186/sjku 2014 19 1 Evaluation of the natural gamma radiation level in residential zones and determination of annual effective exposure dose in the residents of Hamadan province, Iran, 2012 Mohammad Taghi Samadi Bahman Golzar Khojasteh bahman_golzar@yahoo.com Nima Rostampour Ladan Shokery Mirazizi Background and Aim: Human is always exposed to natural background ionizing radiation which may have harmful effects therefore, measurement of the natural background radiation is important. In this study, was measured the dose of effective natural background gamma radiation in indoor residential zones of Hamadan Province. Material and Methods: In this cross-sectional study, we selected four stations along the main geographic directions and one in the center of city for measurement of the indoor dose rate in each of the cities in Hamadan Province. Based on the household numbers, some houses were selected randomly in every station and natural background indoor dose was measured by using RDS-110 survey meter. Then, using the results of our previous study about measuring the level of outdoor natural gamma radiation in this province, we determined the level of annual effective exposure dose from natural gamma radiation in Hamadan residents. Results: In Hamadan province cities, maximum and minimum indoor natural background radiation (gamma ray) belonged to Razan City (1.41±0.079 mSv) and Asadabad City (0.955±0.044 mSv), respectively. Mean annual equivalent indoor dose in Hamadan Province was 1.20±0.070 mSv. Also the maximum indoor natural background radiation dose (gamma ray) in the buildings with the age of more and less than 25 years were 1.42±0.219 mSv and 1.44±0.149 mSv, respectively. According to the results of this study and our previous study about outdoor gamma natural background radiation, the annual effective dose in Hamadan Province residents was 0.83 mSv. Conclusion: According to the results of this study, it seems that annual effective equivalent dose due to indoor gamma radiation in Hamadan Province exceeded the mean external exposure amount reported by UNSCEAR (0.5 mSv). Also the annual effective dose due to gamma background radiation in Hamadan Province residents is 0.83 mSv, which is higher than the global average (0.48 mSv) reported by UNSCEAR – 2000. Therefore epidemiological studies to assess the prevalence of chronic diseases associated with natural radiation exposure among Hamadan Province residents are recommended. Received: May 21, 2013 Accepted: Nov 30, 2013 Conflict of interest: None declared Background Radiation Annual effective dose Indoor Hamadan. 2014 4 01 30 44 http://sjku.muk.ac.ir/article-1-1275-en.pdf 10.22102/19.1.30
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Scientific Journal of Kurdistan University of Medical Sciences SJKU 1560-652X 2345-4040 10.61186/sjku 2014 19 1 Evaluation of the risk factors related to dysfunctional uterine bleeding in peri-menopausal women in Sanandaj Farnaz Zandvakili Shoaleh Shahgeibi Nasrin Soufizadeh Masoomeh Rezaii Fariba Farhadifar fariba.farhadifar@muk.ac.ir Fayegh Yousefi Fahimeh Omidikazazi Background and Aim: Dysfunctional uterine bleeding (DUB) is one of the common problems in peri-menopausal women that can affect their physical, emotional and social conditions. In addition DUB is one of the main causes of hysterectomy. The aim of this study was to investigate risk factors associated with DUB in peri-menopausal women in Sanandaj. Material and Method: This case–control study included 62 women with DUB(case group) and 124 women without DUB(control group). We used a questionnaire consisted of different items which was completed for every subject after clinical interview. Using SPSS software, data analysis was performed by chi-square, Fisher exact test and logistic regression. Results: DUB showed significant relationships with type of delivery (p=0.015) and age (p=0.045). DUB had no significant relationship with diabetes (p=0.095), hypertension (p=0.917) and type of contraceptive methods (p=0.906). Analysis by logistic regression revealed that women over 50 years of age and women with history of Cesarean section (C/S) had a respective risk of 2.284 (p=0.021) and 2.493 (p=0.009) times greater to develop DUB than women without these factors. Conclusion: The age over 50 years and C/S was suggested as risk factors which can be related to DUB. Attention to the advantages of vaginal delivery and complications of C/S is necessary and reduction of C/S rate can be effective in decreasing the incidence of DUB. Received: Jan 20, 2013 Accepted: Nov 27, 2013 Conflict of interest: None declared Uterine bleeding Dysfunctional uterine bleeding Risk factor. 2014 4 01 45 50 http://sjku.muk.ac.ir/article-1-1276-en.pdf 10.22102/19.1.45
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Scientific Journal of Kurdistan University of Medical Sciences SJKU 1560-652X 2345-4040 10.61186/sjku 2014 19 1 Comparison of diagnostic value of fetal cerebellar hemisphere circumference measurement and routine ultrasonography parameters for determination of the gestational age Nazanin Farshchian Taravat Fakheri Mansour Rezaei Hamid Reza Ebrahimi drhrebrahimi@yahoo.com Background and Aim: Recently, ultrasonographic assessment of gestational age has assumed an integral role in prenatal care. The aim of this study was to compare the diagnostic value of fetal cerebellar hemisphere circumference measurement with those of other parameters of routine ultrasonography for estimation of gestational age. Material and Method: This was a descriptive and analytical study and included318 pregnant women with gestational ages of 14 to 41 weeks and distinct LMP in Imam Reza Hospital in Kermanshah. The parameters of BPD, HC, AC, FL, TCD and CHC were measured by Siemens G50 ultrasound system, and gestational age was estimated. Data were analyzed by Spearman correlation coefficient. SPSS 20 software was used for statistical analysis. Result: Based on LMP, mean ± SD of gestational age was 29.18±8.86.But considering the parameters of BPD, HC, AC, FL, TCD and CHC we found mean±SD of 28.94±8.96, 28.93±9.01, 28.76±8.96, 28.87±8.98, 28.88±9.01 and 28.76±8.99 weeks respectively. Spierman correlation coefficients between LMP and other parameters of routine ultrasonography were more than 0.99 and significantly were correlated with one another. Conclusion: Comparison of the diagnostic value of fetal cerebellar hemisphere circumference measurement with those of other parameters of routine ultrasonography for estimation of gestational age did not show any significant differences. We can use measurement of fetal cerebellar hemisphere circumference with other parameters of routine ultrasonography. Received: Jun 8, 2013 Accepted: Dec 8, 2013 Conflict of interest: None declared Gestational age Cerebellar hemisphere circumference LMP Prenatal ultrasonography. 2014 4 01 51 57 http://sjku.muk.ac.ir/article-1-1277-en.pdf 10.22102/19.1.51
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Scientific Journal of Kurdistan University of Medical Sciences SJKU 1560-652X 2345-4040 10.61186/sjku 2014 19 1 The frequency of the most common Mediterranean mutation in phenylketonuria patients in Kermanshah Province Kayvan Moradi Reza Alibakhshi ralibakhshi@kums.ac.ir Kamran Alimadadi Background and Aim: Phenylketonuria (PKU) is one of the major causes of mental retardation which is caused by mutations in the phenylalanine hydroxylase (PAH) gene. Early diagnosis and timely treatment can prevent the complications of this disorder. IVS10-11G>A mutation in (PAH) gene, has been known as the major mutation in Iran, Mediterranean region and Southern Europe. The aim of this study was to determine the frequency of IVS10-11G>A mutation in Kurdish patients with PKUin Kermanshah Province and compare it with the frequencies found in the studies in other parts of Iran. Material and Methods: From 2010 to 2011, we identified 27 unrelated families with classical PKU from different parts of Kermanshah Province. The DNA fragments containing the exon 11 of the PAH gene and its flanking intronic sequences were amplified and sequenced. Results: The frequency of IVS10-11G>A mutation was 7.4% which was found in two homozygous PKU patients. These patients had classic PKU phenotype and their parents were 4th degree relatives. Conclusion: The findings of this study supported the results of our previous study. It seems that there is a distinct difference in PAH characters of mutations between Kermanshah and the other parts of Iran. Therefore, study of the PAH gene mutations in other parts of Iran and use of these studies for future plans, including screening of carriers are recommended. Received: Jul 2, 2013 Accepted: Dec 11, 2013 Conflict of interest: None declared Kermanshah Phenylketonuria Mediterranean mutation 2014 4 01 58 66 http://sjku.muk.ac.ir/article-1-1278-en.pdf 10.22102/19.1.58
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Scientific Journal of Kurdistan University of Medical Sciences SJKU 1560-652X 2345-4040 10.61186/sjku 2014 19 1 The effects of 8 weeks ofintervalcombinedexercise trainingon risk factorsof asthma, insulin resistanceand some of the major physiological indices in overweight and obese adolescents Ahga Ali Ghasemnian ghasemnian@znu.ac.ir Bohlool Ghorbanian Ali Gorzi Background and Aim: Eotaxin, which is an important chemokine in asthma, was recently reported to be increased in obesity in mice and humans. The purpose of this study was to investigate the effect of exercise training on plasma eotaxin levels, insulin resistance, maximal oxygen consumption (Vo2max) and some of the major physiological factors in overweight and obese adolescents. Materials and Methods: In this experimental study, 28 healthy obese and overweight male adolescents were randomly selected. We divided the obese subjects into two groups: exercise group (N = 13) and control group (N=15). The exercise group performed combined exercise training, 4 days a week (70 min/d) for 8 weeks. Vo2max,adiposity, insulin resistance, lipid profile and eotaxin were measured before and after the completion of exercise training. Independent T-test and Pearson's correlation coefficient were used for data analysis. p<0.05 was considered significant. Results: The results showed that 8 weeks of interval combined exercise training increased eotaxine level and Vo2max, and decreased insulin resistance, percentage of body fat, weight, BMI, WC, and plasma levels of triglycerides in obese male adolescents(P<0.05). There was no significant relationship between primary level of eotaxine with other factors (P<0.05). Conclusions: In spite of increased eotaxine level after 8 weeks of interval combined exercise training, We observed positive effects on some of the physiological indices (TG, %BF, insulin resistance, central obesity, BMI and Vo2max) in overweight and obese adolescents. Received: Feb 3, 2013 Accepted: Nov 27, 2013 Conflict of interest: None declared Eotaxin Insulin resistance Index Asthma Interval combined exercise 2014 4 01 67 77 http://sjku.muk.ac.ir/article-1-1279-en.pdf 10.22102/19.1.67
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Scientific Journal of Kurdistan University of Medical Sciences SJKU 1560-652X 2345-4040 10.61186/sjku 2014 19 1 Generation of induced pluripotent stem cells from mesenchymal stem cells of human umbilical cord vein Mehdad Abdi Sona Zare Fardin Fathi farfath@gmail.com Seyed Hadi Anjamrooz Jafar Rezaei Jalal Rostamzadeh Background and Aim: The aim of this study was to generate induced pluripotent stem cells from human umbilical cord vein mesenchymal stem cells by use of plasmid vector. Material and Methods: In this experimental study using type IV collagenase enzyme, we extracted and cultured mesenchymal stem cells obtained from human umbilical cord vein wall.Usingelectroporation method, these cells were transfected with plasmid vector which carried selfrenewal transcription factors of OCT4 and SOX2.After 9 days we observed the induced pluripotent stem cells like colonies. The nature of thesecells were evaluated byimmunocytochemistry and alkalin phosphatase activity of embryonic stem cells. Results: Immunocytochemical analysis showed that these cells express the pluripotency markerssuch as OCT4, SSEA4, TRA1-60, TRA1-81, and also hadalkalin Phosphatase activity. Conclusion: This study revealed that transient expression of self renewal genes of OCT4 and SOX2 couldlead todevelopment of induced pluripotent stem cells like colonies from umbilical cord vein mesenchymal stem cells. Received: May 13, 2013 Accepted: Aug 25, 2013 Conflict of interest: None declared Embryonic stem cells Umbilical cord vein mesenchymal stem cells Reprogramming Selfrenewal genes. 2014 4 01 78 87 http://sjku.muk.ac.ir/article-1-1280-en.pdf 10.22102/19.1.78
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Scientific Journal of Kurdistan University of Medical Sciences SJKU 1560-652X 2345-4040 10.61186/sjku 2014 19 1 Long-term effects of foot orthoseson leg muscles activity in individuals with pesplanus during walking Hamed Esmaeili Mehrdad Anbarian m_anbarian@yahoo.com Fatemeh Salari Esker Behrooz Hajiloo Mohammad Ali Sanjari Background and Aim: Foot orthoses are widely prescribed to treat a range of lower extremity problems. Long-term biomechanical effects of foot orthosesare not clearly documented in the literature. The aim of this study was to examine long-term effects of foot orthoses on leg muscles activity in individuals with pesplanus during walking. Materials and Method: In this clinical trial we selected 45 subjects after clinical examination. The subjects were divided into three equal groups: experimental pesplanus, control pesplanus and a healthy control group (with normal feet). In the pre-test stage, electrical activity of leg muscles including tibialis anterior, peroneus longus, medial gastrocnemius and soleus were recorded at stance phase of walking, while all subjects walked barefoot along a 14m line. Experimental pesplanus group wore the custom-made orthoses for a period of six months. Then experimental pesplanus and control pesplanus groups underwent post-test. One-way ANOVA was used for data analysis. Results: After six months of utilizing foot orthoses, the tibialis anterior activity significantly decreased in contact sub-phase (P=0.006). The medial gastrocnemius activity showed a significant decrease in midstance sub-phase in the post-test (P=0.007). Also, the soleus muscle had decreased activity in contact (P=0.033) and midstance (p=0.023) sub-phases in the post-test. Conclusion: According to the results of this study, we found that long term use of foot orthoses could change muscle activation and result in secondary adaptation. Received: Jan19, 2013 Accepted: Oct 8, 2013 Conflict of interest: None declared Foot orthoses Walking Electromyography Long-term effect Pesplanus. 2014 4 01 88 98 http://sjku.muk.ac.ir/article-1-1281-en.pdf 10.22102/19.1.88
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Scientific Journal of Kurdistan University of Medical Sciences SJKU 1560-652X 2345-4040 10.61186/sjku 2014 19 1 Evaluation of trauma patterns and their related factors in Besat Hospital in Sanandaj in 2012 Jafar mobaleghi Aidin Yaghoobi Notash aidin_yaghoobi@yahoo.com Ali Yaghoobi Notash Hadi Ahmadi Amoli Leila Borna Anaram Yaghoobi Notash Background and Aim: Trauma is one of the world's most important public health challenges. Considering the advances made in technology and industrialization of societies in the last century, trauma and its complications have been regarded a major problem because, it is the most common cause of death and disability in people between1 and 44 years of age. The aim of this study was to determine trauma patterns in the trauma victims treated at Besat Hospital in Sanandaj in 1390. Material and Methods: This was a descriptive–analytical study and included 4016 patients who had referred to Besat Hospital in Sanandaj due to trauma. Data were entered into SPSS V.18 software and analyzed by descriptive statistics and chi-square test. We used Mann-Whitny U test for the variable of age because distribution of age was not normal. Results: 1263 patients (31.4%) were female and 2753 (68.6%) were male. The mean age of the study population was 31.7 ± 19.6(age range: 1 month to 90 years). 131 patients (3.3%) had penetrating and 3885 (96.7%) had blunt trauma. 20 patients (0.5%) died from trauma related injuries. Patterns of trauma had significant relationships with gender and type of traumatic event (p<0.001).There was also a statistically significant relationship between age and trauma patterns (p = 0.006), but the patterns of trauma and trauma-related deaths did not show any statistically significant relationship (p = 0.410). Conclusion: The rate of traffic accidents is high among the young people who are the most active and competent group in the society. Prevention of These accidents requires meticulous planning. Well-equipped emergency rooms can have an important role in the reduction of mortality rate due to trauma related injuries. Received: Apr 21, 2013 Accepted: May 11, 2013 Conflict of interest: None declared Patterns of trauma Injured people Type of trauma Type of accident. 2014 4 01 99 107 http://sjku.muk.ac.ir/article-1-1282-en.pdf 10.22102/19.1.99
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Scientific Journal of Kurdistan University of Medical Sciences SJKU 1560-652X 2345-4040 10.61186/sjku 2014 19 1 Comparison of diagnostic value of ultrasonography versus magnetic resonance imaging in the diagnosis of shoulder rotator cuff muscles tears Mohammad Gharib Salehi msalehi2000@yahoo.com Kaykhosro Mardanpour Mansour Rezaei Naser Moradi Background and Aim: Rotator cuff muscles tears are among the most common problems of shoulder joint .This disorder is diagnosed most commonly by imaging methods especially ultrasound and MRI. According to previous studies, both of these methods have high diagnostic value. Because of small sample sizes and inappropriate gold standards in these studies and also lack of enough studies in our country we decided to conduct this study to compare ultrasound and MRI for diagnosis of rotator cuff muscles tears. Material and Methods: We performed shoulder ultrasonography and MRI for 100 patients before shoulder surgery in this descriptive analytical study. The results of ultrasonography and MRI were reported separately by 2 radiologists. Using SPSS 19 software, data were analyzed by McNamara’s test. Results: 27 of 100 patients that underwent surgery had tears in rotator cuff muscles (20 with complete tear and 7 with partial tear). Sensitivity, specificity, positive predictive value and negative predictive value were 92.6%, 95.9%, 89.3% and 97.2% for ultrasonography, and 96.3%, 97.3%, 95.9% and 98.6% respectively for MRI. There was no significant difference between the two methods (P>0.05). Conclusion: According to the results of this study both of these methods have high accuracy in the diagnosis of rotator cuff muscles tears and can be used for patient evaluation. Received: Feb 7, 2013 Accepted: Sep 3, 2013 Conflict of interest: None declared Rotator cuff Ultrasound Magnetic resonance imaging 2014 4 01 108 113 http://sjku.muk.ac.ir/article-1-1283-en.pdf 10.22102/19.1.108
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Scientific Journal of Kurdistan University of Medical Sciences SJKU 1560-652X 2345-4040 10.61186/sjku 2014 19 1 Assessment of performance of the hospitals of Kurdistan University of Medical Sciences by use of Pabon Lasso Model (2007-2011) Tayeb Miraki Satar Rezaei Nader Jahanmehr Morteza Mohammadi Fardin Gharibi fardin.gharibi@muk.ac.ir Background and Aim: One of the useful methods to assess hospital performance is Pabon Lasso Model. The aim of this study was to assess performance of the hospitals of Kurdistan University of Medical Sciences by Pabon Lasso Model from 2007 to 2011. Material and Methods: In this cross sectional study we used turnover rate, bed occupancy rate and the average duration of hospitalization as our indicators to assess the performance of 12 hospitals of Kurdistan University of Medical Sciences by Pabon Lasso Model from 2007 to 2011. We used Excel software for data analysis. Results: In this study we found a bed occupancy rate of 62.5% and a bed turnover rate of 79.2 times. The average duration of hospitalization was 3.4 days. One (8%) hospital was located in zone 1, four (33%) hospitals in zone 2, five (42%) hospitals in zone 3 and two (17%) hospitals in zone 4. Conclusion: According to the results of this study it can be suggested that the development of outpatient services, transmission of beds between the hospitals and prevention of development and extension of medical center scan be considered as the main strategies for increasing the efficiency of the hospitals. Received: March 2, 2013 Accepted: Nov 10, 2013 Conflict of interest: None declared Performance assessing Hospital Pabon Lasso Model Duration of hospitalization Bed occupancy rate Turnover rate. 2014 4 01 114 123 http://sjku.muk.ac.ir/article-1-1284-en.pdf 10.22102/19.1.114
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Scientific Journal of Kurdistan University of Medical Sciences SJKU 1560-652X 2345-4040 10.61186/sjku 2014 19 1 Efficiency of Pistaciaatlantica seed extract as natural coagulant in the removal of Reactive Red 198 dye from aqueous solution Mostafa Alizadeh Edris Bazrafshan ed_bazrafshan@yahoo.com Amir Hossein Mahvi Ferdos KordMostafapour Esmail Ghahremani Background and Aim: Textile dyes and other dyes used in various industries are among the largest organic compounds which can be a major hazard to the health and environment. Therefore treatment of wastewater before discharging it into the environment is necessary. In the present study we investigated the efficiency of Pistacia atlantica seed extract in a batch system for removal of Reactive Red-198 dye from aqueous solutions. Material and Method: This is a basic- applications study conducted in laboratory. The effects of independent variables such as coagulant dose (0.1–1 ml L-1), initial dye concentration (50, 100, 150 and 200 mg/l) and pH (2-12) were investigated. To measure the residual concentration of dye we used a spectrophotometer at the wavelength of 520 nm. Excel software was used for data analysis. Results: The optimum pH for Reactive Red-198 removal by coagulation using Pistacia atlantica seed extract was 12, with a coagulant dose of 0.5 ml/L. The highest removal rates were 83.12, 84.20, 87.36 and 88.49% at initial dye concentrations of 50, 100, 150 and 200 mg/L respectively, which could be result of precipitation, co-precipitation and adsorption mechanisms. Conclusion: According to the results of this study, Pistacia atlantica seed extract was an inexpensive coagulant, and also quite effective in the removal of Reactive Red-198 dye from aqueous environments. Received: Nov 28, 2012 Accepted: Sep 29, 2013 Conflict of interest: None declared Reactive Red-198 dye Coagulation Pistacia atlantica seed extract 2014 4 01 124 134 http://sjku.muk.ac.ir/article-1-1285-en.pdf 10.22102/19.1.124