Showing 7 results for Ansari
F Emami-Khansari , M . Ghazi-Khansari , M Abdollahi ,
Volume 1, Issue 3 (7 2003)
Abstract
Heavy metal contamination of food products, especially seafood is a major concern because of the bioaccumulation and biomagnification of metal contaminants. Their detection in fish is an indicator of marine pollution. In this study heavy metal concentrations were measured in a sample of commercially obtained canned tuna after digestion and preparation of 21 such samples, levels of mercury and arsenic were determined by the hydride generation technique, while those of lead and cadmium were measured by the graphite furnace system. Tin levels were determined by flame atomic absorption spectrophotometery. The mean contents of heavy metals expressed in ug/g of wet weight were O.U3±0.027 (range 0.082-0.16) for mercury, 0.129±0.082 (0.037-0.262) for arsenic, 0.029±0.019 (0.006-0.088) for cadmium, and 0.33±0.12 (0.016-0.049) for lead. No tin was detected any of the samples. The concentrations of toxic metals in this study were below the WHO/FAO-recommended levels, but further studies are needed to assess the risk associated other types of food.
M Ghasi - Khansari , M Khaksar , S.a Ebrahym Zadeh Mosave , A Cheraghali , S Hashemje Javade ,
Volume 3, Issue 3 (3 2005)
Abstract
Polystyrene plastic material is a part of important packaging materials that is widely used. In recent decades, It is excessively applied in manufacturing of disposable drinking containers. Temprature is an important factor in determination the stability styrene monomer. The migration of styrene monomer in to hot drinks may cause chronic toxic effect in nervous system, liver and other organ of body.
In this study, 51 samples of hot water (100oC) Standing for 60 min were used. Then extraction and distilation of samples were down. thereafter, 50 μlit of preprated sample were injected into HPLC (high performance liquid chromatogarphy) for determination of styrene monomer.The response of the detection system is linear for styrene monomer from 0/25 to 5 ng/ml.This method offer a quick, Sensitive and reliable procedure for specifically for determining of styrene monomer.For the reproducibility of method performed studies of within-day and day to day from independently prepared sample by spiking blank with amount of analyte.The results of the recovery study for styrene monomer were mean 94/58%(range 94/31-95/23%) . The limit detection of 0.001 mg/kg (1ppb). The mean contant of styrene monomer was 7/61±0/1 ng/kg (range 7/07 - 9/56).
The concentration of styrene monomer in this study was above the EPA recommended levels. More study are needed to further elucidate this finding.
M Firouzbakht, H Eftekhar Ardebili, F Majlesi, A Rahimi, M Ansari Dezfooli, M Esmailzadeh ,
Volume 5, Issue 4 (5 2008)
Abstract
Background and Aim: Hearing impairment is one of the most common congenital defects. Unfortunately there have been no studies so far on the prevalence of various degrees of neonatal hearing, loss in Iran. As accurate determination of prevalence is crucial in estimating disease burden and planning subsequent interventions, we carried out this study to determine the prevalence of neonatal hearing impairment.
Materials and Methods: In this study, we assessed the prevalence of hearing loss among the newborns in province capitals and also looked at the role of some putative risk suggested by the Joint committee on Infant Hearing (JCIH). In this research, 76500 newborns who had undergone audiologist-administered screening tests were assessed by a special questionnaire designed specifically for this study.
Results: After trapshooting the overall prevalence of hearing loss was estimated and then cases were classified as moderate (40 - 65 db HL), severe (65 - 90 db HL), or profound (>90 db HL) hearing loss. Among the newborns examined, a total of 362 were diagnosed with hearing loss and hence the overall prevalence was estimated at 4.7 per thousand 168 cases had moderate (2.2 × 10 -3), 114 cases had severe (1.5 × 10 -3) and 80 cases had profound (1.1 × 10 -3) hearing loss.The prevalence rate ranges from 2-3 × 10 -3 (in Hamedan and Mazandaran) to 7-8 × 10 -3 (in Yazd and Chaharmahal-Bakhtiari). In newborns with a family history of sensory-neural hearing loss the prevalence was 16 × 10 -3, compared to 18 × 10 -3 in those requiring blood transfusions, 15 × 10 -3 in newborns with a history of admission to neonatal intensive care units, 17 × 10 -3 in those with craniofacial anomalies, and 19 × 10 -3 in newborns with birth weights below 1500 grams. The sample included 39376 boys and 37124 girls 193 boys (5 × 10 -3) and 169 girls (4.6 × 10 -3) were affected. The stratified prevalence in males (193) was 477 × 10 -3 for intermediate, 311 × 10 -3 for severe and 202 × 10 -3 for profound deafness. The rates in the female population were 437 × 10 -3 for intermediate, 320 × 10 -3 for severe and 273 × 10 -3 for profound hearing loss.
Conclusion: The results confirm the need for extensive neonatal screening programs, and the significant difference in prevalence between high-risk groups and the normal population provides justification for continuous audiologic screening in this group of newborns.
A.r Mesdaghinia , J Nouri , A.h Mahvi , F Vaezi , K Naddafi , M Ansarizadeh ,
Volume 7, Issue 4 (27 2010)
Abstract
Background and Aim: The aims of this study was to explore the feasibility of improving efficiency of the wastewater treatment system of the Fars Pegah Dairy Industries (FPDI) and propose ways to upgrade it in 2006-2007. The FPDI wastewater treatment system was of a successive anaerobic-aerobic type using anaerobic stabilization ponds and conventional and extended aeration activated sludge. Due to improper design and operation, it did not meet the required standards with regard to disposal to the surrounding cultivated land.
Materials and Methods: To overcome the problem and eliminate the bad smell, modifications were made, such as changing the entries and exits of the ponds, adjustment of the activated sludge process, and converting the conventional activated sludge F/M to a step-feed activated sludge shift. The efficiency of the system was assessed before and after these modifications
Results: The efficiency of the system to eliminate biochemical oxygen demand (BOD5), chemical oxygen demand (COD), total dissolved solids (TDS), total suspended solids (TSS), total coliform, and fecal coliform increased from 82.42%, 86.87%, 64.18%, 20.23%, 54.56% and 50.87% to 97.34%, 98.61%, 90.4%, 28.44%, 90.09% and 89.95%, respectively.
Conclusion: The findings show improvements in the efficiency of the wastewater treatment system due to the changes made in it. It was also observed that efficiencies of the feed-step aeration and the extended aeration are similar. This means that application of the extended aeration in the treatment system of the plant would result in waste of money and energy.
Ali Nik Farjam, Hassan Ajam, Robabeh Ansari Torghii, Hajar Alimohammadi, Yousef Alimohammadi , Elahe Hesari,
Volume 19, Issue 3 (3-2022)
Abstract
Background and Aim: The process of identifying Covid 19 cases over time (the trend) can provide valuable information about the coverage of diagnostic and screening programs over time. This study aimed to investigate the outpatient trend of Covid-19 in selected comprehensive health service centers of Tehran University of Meical Sciences, Tehran, Iran.
Materials and Methods: This was a descriptive cross-sectional study. The data collected inculded the number of referalls and Polymerase Chain Reaction (PCR)-positive individuals between April 13 and December 25, 2020. Central and dispersion indices (mean, median, standard deviation and interquartile range) were used to describe quantitative variables. In addition, linear and bar charts were used to describe the trend of the variables over time. All analyses were performed using the Excel 2016 and SPSS 22 software.
Results: The highest numbers of suspected cases of Covid-19 were found to be in April, June and October. There were 2 peaks in the trend of positive cases of Covid 19, and the highest proportions of daily positive cases of Covid 19 was seen in late June and early July, as well as in late September, October, and December. The highest numbers of individuals referred and tested were observed in the South of Tehran Health Center.
Conclusion: Considering the occurrence of two epidemic peaks during the study period, the occurrence of further epidemic peaks is almost certain to occur if there is no proper planning for public health services and primary health care by the responsible health authorities and policy-makers.
Mostafa Peyvand, Hossein Ansari, , , Mohamad Ali Yadegari, Hossein Moein,
Volume 21, Issue 3 (12-2023)
Abstract
Background and Aim Cardiovascular complications in diabetes mellitus are one of the most common complications of this disease. The aim of this study was to determine the cumulative probability of occurrence of cardiac complications in type 2 diabetes mellitus using survival analysis in patients referring to the Diabetes Clinic, Bu-Ali Hospital, Zahedan, Iran.
Materials and Methods: This was a descriptive and analytical historical cohort study using the survival analysis method in 2020 on 410 patients referring to the Diabetes Clinic, Bu-Ali Hospital, Zahedan, Iran. Data were collected and analyzed using the SPSS-v21 software, the statistical tests being descriptive tests, followed by the Kaplan-Meier method and the Cox proportional hazards model of survival.
Results: The results of this study showed that 122 individuals (29.7%) of the diabetic patients had cardiac complications. The median survival time (in months) of the occurrence of cardiac complications was found to be related to fasting and two-hour postprandial blood sugar levels (p<0.05). Further analysis of the data showed that two variables, namely fasting blood sugar and regular visits, remained in the final model of the multiple Cox regression.
Conclusion: The findings of this study showed that the cardiac complications of diabetes in the population studies are relatively high. Therefore, it is essential to plan and implement interventions aiming to change lifestyle and control regularly blood pressure, cholesterol and blood sugar in the patients in order to prevent the disease
Fatemeh Setoodehzadeh, Hossein Ansari, , Fatemeh Nazari, Fatemeh Khabiri, Mohammad Hassan Amiri Moghaddam,
Volume 21, Issue 3 (12-2023)
Abstract
Background and Aim: The health system is trying to prevent unnecessary referrals to higher levels by providing tiered services and thus reduce the cost of health care. Therefore, this study was conducted in Zahedan City, Iran with the aim of finding the causes of referrals from level 1 to higher tiers in rural areas.
Materials and methods: This cross-sectional study was conducted on 458 rural patients referred to the second level in the rural areas of Zahedan City, Iran. Data were collected from the family health files available in the Sib system and analyzed using the SPSS-16 statistical software, the statistical tests being descriptive statistics (percentage, frequency) and Chi-square test.
Results: The highest (57.6%) and lowest (4.1%) proportions of referrals to the second level of service provision were found to have been in 2018 and 2016, respectively. From among the referred patients nearly 50% had been referred due to the need for a higher expertise, thus most referrals (67.2%) were to specialists. Further analysis of the data showed that only in 23.6% of the cases there was a feedback from the higher level to the first level.
Conclusion: The findings show that referrals from family physicians to higher levels in the health system requires higher medical expertise and patient insistence. In addition, feedback to the first level of service provision has not received proper attention. Establishing interactions between physicians and other health service levels, refresher training of physicians, emphasizing the importance of providing feedback and promoting the awareness of patients can reduce to a large extent inappropriate referrals.
