Showing 9 results for Alipour
Ghorban Asgari, Abdolmotaleb Seid Mohammadi, Jamal Mehralipour, Adel Ahmadzadeh,
Volume 11, Issue 2 (Pajouhan Scientific Journal, Winter 2013)
Abstract
Background and Objectives: fluoride in low concentration is essential for human but in high concentration is very hazardous for human health. The efficacy of Snail Shell (SS) was investigated in this research work as an adsorbent for the elimination of fluoride from aqueous.
Methods: in this experimental study, the capability of SS to adsorb fluoride ions was conducted using a series of batch tests in a shaker-incubator instrument. For each batch run, 100 mL of solution containing a known initial concentration of Fluoride and with the preferred level of pH was shacked. The effects of selected parameters such as pH (3-11), reaction time (5–60 min) cyanide concentrations (5-10 mg/L) and the adsorbent dosage (0.25–2.5g/L) were investigated on the removal fluoride as a target contaminate. Chemical composition SS were analyzed using a Philips model XL30- scanning electron microscope (SEM) with energy-dispersive X-ray microanalysis (EDX). The concentration of Fluoride in solution before and after treatment was determined using the HACH method.
Results: Analysis of the SS component using the EDX technique showed that the main part of it consisted of calcium and its other components were magnesium, aluminum and silicate. The experimental data showed that the maximum fluoride removal occurred at pH of 7, adsorbent dose (0.5 g/L) and 30 min contact time and 5 mg/lit initial concentration. The kinetic evaluation indicated that the pseudo-second-order kinetic had the best fit to the experimental results predicting a chemisorption process. The equilibrium adsorption of fluoride onto SS was well represented by the Langmuir equation.
Conclusion: As a result, SS was revealed as a very efficient and low-cost adsorbent and a promising option for removing fluoride from industrial wastewaters.
Ghorban Asgari, Abdolmotaleb Seid Mohammadi , Amir Shabanlo, Jamal Mehralipour,
Volume 11, Issue 3 (Pajouhan Scientific Journal, Spring 2013)
Abstract
Background and Objectives: cyanides as carbon-nitrogen radicals are very toxic compounds and highly harmful to humans and aquatic organisms. The efficacy of eggshells (ES) was investigated in this research work as an adsorbent for the elimination of cyanide from polluted streams.
Methods: In this experimental study, the capability of ES to adsorb cyanide ions was conducted using a series of batch tests in a shaker-incubator instrument. For each batch run, 100 mL of solution containing a known initial concentration of cyanide and with the preferred level of pH was shacked. The effects of selected parameters such as pH (11-3), reaction time (60–5 min) cyanide concentrations (150–50 mg/L) and the adsorbent dosage (2–0.25 g/L) were investigated on the removal cyanide as a target contaminate. Chemical composition ES were analyzed using a Philips model XL- 30 scanning electron microscope (SEM) with energy-dispersive X-ray microanalysis (EDX). The specific surface and pore size distributions of ES were measured via Brunauer-Emmett-Teller (BET) isotherm and Barrett-Joyner-Halenda (BJH) methods using a Micrometrics particle size analyzer. The concentration of cyanide in solution before and after treatment was determined using the titrimetric method as described in the standard methods.
Results: Analysis of the ES component using the EDX technique showed that the main part of it consisted of calcium and its other components were magnesium, iron, aluminum and silicate. The experimental data showed that the maximum cyanide removal occurred at pH of 11, adsorbent dose (0.5 g/L) and 40 min contact time. The kinetic evaluation indicated that the pseudo-second-order kinetic had the best fit to the experimental results predicting a chemisorptions process. The equilibrium adsorption of cyanide onto ES was well represented by the Langmuir equation.
Conclusions: As a result, ES as waste materials was revealed as a very efficient and low-cost adsorbent and a promising option for removing cyanide from industrial wastewaters.
Ghorban Asgari, Adel Ahmadzadeh, Jamal Mehralipour,
Volume 12, Issue 4 (Pajouhan Scientific Journal, Summer 2014)
Abstract
Introduction: As seasonal turbidity is one of the major challenges in drinking water supply consequently, take an appropriate method to provide standards range is necessary. This study aimed to determine the effect of Snail shell as a coagulant aid in the removal of turbidity in aqueous environments using electrocoagulation process through aluminum electrodes.
Methods: This experimental study was investigated at the laboratory scale. The used reactor had a volume of 1 liter whit four aluminum electrodes as a cathode and anode in the form of a direct current power supply. Effects of pH (9-6), initial concentration of turbidity (200 NTU to 800 NTU), reaction time (30 -10 min), the concentration of Snail Shell (0.5-4.5 mg/L) and the potential difference (10-40 V) were examined.
Results: The findings indicated that the best performance for turbidity removal obtained at pH 8, reaction time 30 min, potential difference of 40 V, SS 2 mg/L dose of coagulant aid concentration and turbidity 200 NTU.
Conclusion: The results suggest that Electrocoagulation process using aluminum electrodes have good performance for removal of high concentration of turbidity and snail shell coagulant aid is a good option to improve the performance of the electrocoagulation process.
Maryam Salehzadeh, Parham Norouzian, Roghayeh Abbasalipourkabir,
Volume 13, Issue 2 (Pajouhan Scientific Journal, Winter 2015)
Abstract
Introduction: Nowadays, cancer is one of the most important health concerns in modern societies. The
application of nanoparticles has resulted in new possibilities for the diagnosis, tumor imaging and treatment
of human cancers.
Methods: Gathering and collecting of data have been done from 56 researches conducted on the structure
of types of nanoparticles and their applications in diagnostics, imaging and drug delivery systems
for the treatment of cancer.
Results: The inorganic nanoparticles such as quantum dots, which have a central core of magnetic properties,
can be used for the detection and imaging of tumors, as well as the organic nanoparticle systems
such as liposomes, solid lipid nanoparticles, aptamers, dendrimers and nanobody in different drug-ligands.
Aptamers are the oligonucleotids or peptides that bind to the protein or certain targets. Various
applications of aptamers include diagnostics, therapeutics, molecular imaging and drug delivery. Moreover,
nanobodies are of antibody like molecules which are widely used in the diagnosis and treatment
of cancer.
Conclusion: Although there are some challenges and limitations on the use of nanoparticles in medicine,
it is hoped that in the near future, nanoparticles create tremendous revolutionary not only in the oncology
but also in medicine. The current paper is an overview of the application of organic and inorganic
nanoparticles in diagnosis and treatment of the neoplasm.
Mehran Yari, Leila Molaeipour, Mohammad Reza Jafari, Ali Asghar Valipour, Salman Khazaei, Ghodratollah Roushanaei,
Volume 14, Issue 4 (Pajouhan Scientific Journal, Summer 2016)
Abstract
Introduction: Unsuccessful treatment of tuberculosis (TB) is big challenge to public health. Some conflicting results in regards with relationship of the sputum smear degree in unsuccessful treatments or death of patients have been reported. Therefore, the current study aimed to evaluate the relationship of the grading of sputum smear-positive patients in the beginning of treatment on treatment consequences.
Methods: In this descriptive-analytic study, which was from cross studies, the records of all positive pulmonary tuberculosis patients were investigated during the years 2010 to 2013 in the Abadan TB register system. Distribution status of sputum positive in the beginning of the treatment was determined by using descriptive statistics. The Chi-square test was used to assess the relationship between sputum smear grading of the patients and treatment outcomes. Data were analyzed using Stata-12.
Results: From a total of 188 patients during the 4-year period, 68.1% of them were males and 87.8% of them were living in urban areas. Furthermore, 80.8% of the patients recovered, 9.6% died, 3.2% had unsuccessful treatment, 3.7% were transformed to other universities and 2.7% of them were missing. Also, it was found that there was a significant relationship between the basil level in the beginning of the treatment with treatment outcomes of the patients (P=0.02).
Conclusion: It was found that there was a significance relation between the grading of sputum smear-positive patients and treatment outcomes, as the patients with higher grading of sputum smear–positive the rate of recovery was better. Therefore, it is recommended that appropriate standard treatment under proper conditions and management including daily direct supervision (DOTS) and support of patients by the complete recovery should be offered.
Sadegh Zarei, Hemen Moradi, Soheila Asadi, Roghayeh Aabbasalipourkabir, Nasrin Ziamajidi,
Volume 15, Issue 3 (Pajouhan Scientific Journal, Spring 2017)
Abstract
Introduction: Zinc is part of the antioxidant system, so zinc deficiency impairs the body's antioxidant defense system and leads to increased oxidative stress. The objective of this study was to investigate the effect of zinc oxide on the antioxidant status in rat.
Methods: Twenty-five male Wistar rats of 5-8 weeks’ old were divided into five groups of five animals each. Next, during the following 10 days, four groups (1-4) of the rats were exposed to different doses: 50, 00, 150 and 200 mg/kg of zinc oxide (ZnO) as the intraperitoneal injection; and, group 5 was considered as the control group. After this stage, 2 ml blood was collected from the jugular vein of the rats and oxidant and antioxidant parameters containing glutathione peroxidase (GPX), superoxide dismutase (SOD), total antioxidant capacity (TAC) and lipid peroxidation (LPO) were assayed.
Results: Activity of SOD increased significantly in the groups treated with different doses of ZnO (P<0.05). The groups treated with ZnO showed insignificant variation in GPX activity compared to the control group. Significant increased lipid peroxidation index (LPO) was shown in groups treated with different doses of ZnO. Reduction in the total antioxidant capacity (TAC) and significantly increased total antioxidant status (TOS) was obtained in the all groups received ZnO (P<0.001).
Conclusion: The results of this study showed that the used concentrations of ZnO increased significantly SOD and TOS and reduced insignificantly GPX compared to the control group which can be a marker of oxidative stress induction.
Mohammad Babamiri, Seyed Ali Mahdiyoun, Ziba Abdi, Nasrin Nouri, Nasim Alipour,
Volume 17, Issue 4 (Pajouhan Scientific Journal, Summer 2019)
Abstract
Background and Objectives: With respect to this fact that trust in supervisor could result in positive organizational consequences, the goal of this research was to investigate the relationship between psychological capital, perceived interactional justice and supervisor support with trust in supervisor.
Materials and Methods:The study design was descriptive and correlational. The statistical sample (250) was all nurses that work in Hamadan hospitals and selected by simple random sampling. The research tools included psychological capital questionnaire, interactional justice questionnaire, supervisor support and trust in supervisor questionnaire. Data were analyzed using Pearson correlation coefficient in SPSS v.19 with significance set at p ≤0.05.
Results: The results showed that there is significant positive relationship between psychological capital and perceived interactional justice with trust to supervisor (p=0.01), but there is not significant relationship between supervisor support and trust to supervisor (p>0.05).
Conclusions: The results indicate that the dimensions of psychological capital, perception of justice, and supervisor support can build trust in the supervisor. Therefore, it is recommended to pay attention to the variables mentioned in order to build trust in the supervisor.
Mehrdad Maleki Jamasbi, Hiva Azami, Seyedeh Hadis Ebrahimi Neshat, Kamran Alipour, Fatemeh Jahani, Sajjad Amiri Bonyad,
Volume 19, Issue 1 (Pajouhan Scientific Journal, Autumn 2020)
Abstract
Background and Objective: Neonatal mortality rate has declined in the last decade. however, the trend of these deaths in our country is much higher than developed countries. Therefore, it is important to study the epidemiological indicators in the field of mortality. In this regard, the present study was conducted with the aim of epidemiological study of neonatal mortality in hospitalized neonates in the neonatal intensive care unit of medical-educational hospitals in Hamadan city in 2018.
Materials and Methods: In this retrospective descriptive cross-sectional study, the information of all neonates hospitalized and died for one year in the neonatal intensive care unit in Hamadan educational-medical hospitals in 2018, by census method, was extracted from the medical records of patients by using a checklist from a researcher-made questionnaire. Data were analyzed by descriptive statistical tests.
Results: From 2156 hospitalized, 109 patient died, that the highest mortality rate was among the result of cesarean section neonates (68.9%), with APGAR score of 0-7 (82.6%), without congenital malformations (66.1%), weighting less than 1500 grams at birth (48.6%), in the gestational age 32-38 weeks (39.44%). Based on the results, most of the dead persons were single-day neonates, male, with head circumference 35 cm, at the age of 18 to 35 the mother, in diploma and urban mothers, with no history of previous neonate death, stillbirth, smoking and mental illness.
Conclusion: Due to the high mortality rate in neonates, especially single-day neonates, premature, weighting less than 1500 grams at birth and the result of cesarean section neonates, to reduce this rate as much as possible, effective and timely attentions and actions such as prenatal training for pregnant mothers is necessary.
Firoozeh Derakhshanpour, Nesa Alipour, Amir Maghsoudloo Nejad,
Volume 22, Issue 4 (Pajouhan Scientific Journal, Autumn 2024)
Abstract
Background and Objectives: Children were one of the vulnerable groups in society during the COVID-19 pandemic. Although children showed less severe form of the disease compared to adults, ignorance and fear of this disease lead to serious problems, such as anxiety disorder, depression, and post-traumatic stress. The purpose of this research is to investigate the state of anxiety disorders in children aged 6-12 years after the COVID-19 pandemic in Gorgan City.
Materials and Methods: The present cross-sectional study was conducted with a descriptive-analytical approach conducted on 490 patients who referred to the Taleghani Hospital clinic and two private practices of pediatricians in Gorgan. The required data for the study were collected using the standard Spence Children's Anxiety Scale. Data were analyzed in SPSS version 18 software using independent t-test and one-way analysis of variance. A significance level was considered at less than 0.05.
Results: The mean age of the children was 8.72 ± 1.51 years, and 257 (52.4%) of them were boys. The mean anxiety score was 19.78 ± 12.08. The subscale of fear of physical harm (4.71±3.07) and separation anxiety (4.88±3.61) obtained the highest scores among the dimensions of anxiety disorder. Girls had a higher anxiety score than boys (P=0.001). No significant statistical relationship was observed between history of infection with COVID-19 (P=0.689) and death due to COVID-19 (P=0.176) and anxiety score. Anxiety disorders were higher in preschool children (P<0.05). There was a statistically significant relationship between the parents' education level and the father's occupation and the total anxiety score (P<0.05). There was no statistically significant relationship between mother's occupation and anxiety disorder (P=0.136).
Conclusion: According to the findings, the social and cultural factors of the family have a significant role in children's anxiety; therefore, it is necessary to consider the education of parents in order to prevent children from suffering from anxiety.
