Showing 10 results for Darvishi
Bahman Hasanvand, Farid Bahrami, Azam Darvishi, Kobra Karami, Masoud Chegeni,
Volume 13, Issue 1 (6-2011)
Abstract
Recognition of deformities and corrective exercise is a branch of physical education which intends to emend and treat various muscular weaknesses and deformities using proper and accurate corrective exercise and sports scientific principles.The aim of this study was to investigate the effect of regular corrective exercise on skeletal deformities such as scoliosis, shoulders dropping, flat foot and bow leg in secondary school male students of Khorramabad city as the statistical population.
Materials and Methods: 160 girls in khorramabad city, aged 12-14 years, participated in this study. The subjects were examined twice before and after 24 sessions of corrective exercise. Deformities were measured by grid plane, plumb line and other relevant tests. The gathered data were analyzed by descriptive statistical methods including: frequency, percentage and graphs.
Results: In 12 years old sbjects the degree of shoulders dropping, flat foot and bow leg in post- test were lower than pre-test and differences were significant (F=7.96, P<0.001& F=100.1, P<0.001 & F=27.63, P<0.001), but scoliosis was not significant (F=3.32 , P>0.001). The differences between pre and post measurments of shoulders dropping, flat foot and bow leg in 13 years old cases were significant (F= 100.1, P<0.001 & F=27.63, P<0.001 F=7.96, P<0.001),but for scoliosis, the differences were not significant (F=3.32 & P>0.001). Finally in 14 years old subjects for shoulders dropping, flat foot and bow leg, differences between pre and post- test were significant (F=7.96, P<0.001 & F= 100.1, P<0.001& F=27.63, P<0.001) but scoliosis were not significant(F=3.32 , P>0.001).
Conclusion: The findings of this study emphasize the reliable, accurate, feasible, and easy methods for decreasing abnormalities. Furthermore, it showed that the corrective exercise programs, can reduce the abnormalities in oldness.
Dr Ghodratollah Shams Khorramabadi , Reza Darvishi Cheshmeh Soltani , Dr Abas Rezaee, Dr Ahmad Jonidi Jafari ,
Volume 13, Issue 2 (8-2011)
Abstract
One of the most important environmental problems is water and soil contamination with heavy metal ions. In this direction, the aim of this investigation was biosorptive removal of Cr (VI) using calcium alginate and determination of isotherm and kinetic of biosorption.
Materials and Methods: Using batch system, biosorption capacity of calcium alginate for removal of Cr(VI) ions was investigated as function of pH, shaking time and Cr(VI) ions concentration. For determination of active bands and biosorbent characteristic, Fourier Transform Infrared (FT-IR) and Scanning Electron Microscopy (SEM) analysis were carried out respectively.
Results: Regarding the FT-IR analysis, It was shown that C=O and O–H groups played a significant role in Cr (VI) biosorption onto alginate calcium. The optimum pH was obtained at pH value of 4.0. Suitable fitness between the experimental data and studied isotherm was obtained (R2>0.9). Maximum biosorption capacity of calcium alginate was 84.75 mg/g. The mean free energy of Cr(VI) biosorption (E) was calculated 9.129 kJ/mol. Moreover, the pseudo-second order kinetic model was found to be suitable than the pseudo-first order kinetic model to correlate the experimental data (R2>0.97) and equilibrium was achieved within 120 min.
Conclusion: It can be stated that biosorption of Cr (VI) onto calcium alginate occurs through a chemical mechanism. Also, according to maximum biosorption capacity, it can be stated that calcium alginate is an effective and efficient biosorbent.
Zahra Noorimotlagh, Ghodratollah Shams , Hatam Godini , Reza Darvishi,
Volume 14, Issue 5 (2-2013)
Abstract
Background : Effluents containing synthetic dyes are hazardous to ecological systems and public health. Methylene blue is an important chemical aromatic dye which commonly used in textile industries. Due to being aromatic, it is often toxic, carcinogenic and mutagenic. The goal of this study was to investigate the efficiency of ZnO nano particles photocatalytic process for decolorization of methylene blue by UV irradiation from synthetic textile wastewater.
Materials and Methods: In this study methylene blue photocatalytic decomposition using Ultraviolet (UV) irradiation and zinc oxide nano particles having less than 50 nm in diameter was surveyed. A batch-through Plexiglass reactor having two compartment used to conduct the experiments. Wastewater was flowed to the compartment which contains of nano ZnO stabilized glasses. UV lamps were installed at another compartment. The variables of the study included: exposure time, color concentration, light intensity, and lamp distance to the catalyst surface.
Results: ZnO nano particles characteristics were determined by Scanning Electron Microscope (SEM) and X-ray diffraction (XRD) analysis. Images showed that stabilizes nano particles on glass, their porosity remains in the optimal level. Optimium values for exposure time 120 minutes, color concentration 25 mg/l, light intensity 3950 μW/cm2, and distance to the catalyst surface 1 cm were achieved. At the optimal condition, methylene blue decolorization and COD removal was achieved 92.2% and 75% respectively
Conclusion: Regarding the conducted experiments, the results of this studyshowed that ZnO/UV photocatalytic process has a significant efficiency in dye decolorization and COD removal. This method could be applied in the full scales.
Ghodratollah Shams, Hatam Godini , Reza Darvishi Cheshmeh Soltani , Zahra Noorimotlagh ,
Volume 16, Issue 3 (1-2015)
Abstract
Background : One of the major disadvantages of zinc oxide in aqueous solution is the light unstability of this catalyst due to the light corrosion which causes substantial reduction of photocatalytic activity of zinc oxide and application of it for environment purification. In this study, the performance of photocatalytic of UV/Silica-ZnO was compared in dye and COD removal by UV/ZnO. Materials and Methods: This study was conducted in the lab scale. The various percentages of silica nanoparticles in the combination of zinc oxides nanoparticles were fixed onto the glass by UV/Silica-ZnO process and were examined at optimum condition in the UV/ZnO process. XRD patterns of zinc oxide nanoparticles alone and accomplished by silica were conducted. Results: X-ray diffraction, confirm that there is no impurity in nanoparticles. The different percentages of silica (5, 10 and 15%) were tested in combination with zinc oxide nanoparticles. The findings showed that the value of dye and COD removal with contact time of 90 min and 10% silica loading in UV/Silica-ZnO process were 100 % and 81%, respectively and UV/ZnO process were 66% and 44% respectively. Conclusion: According to the obtained results, 10% of silica, in combination with zinc oxide nanoparticles, was the best percentage. Thus, UV/Silica-ZnO process can be used as an effective method for removing dye from textile waste waters.
Azam Darvishi, Masoud Chegeni, Hasan Tymouri , Rahim Mirnasury, Fatemeh Hafezi,
Volume 18, Issue 4 (3-2017)
Abstract
Background: physical activities play an important role in increasing heart and blood vessels performance. The aim in this is determining the influence of 10 weeks aerobic exercise and 6 weeks non exercise on relaxation blood pressure of healthy non athletic girl students.
Materials and Methods: In this semi experimental study 27 non athletic female students with 22/30± 1/70 were selected voluntary and attended the 10 weeks program, three sessions with 55 to 80% extra systole.
After 10 weeks aerobic exercise, volunteers spent 6 weeks without exercise. Before starting the aerobic term, after non exercise term, after exercise term and also after non exercise term, relaxation blood pressure of the volunteers were measured by mercury Richter pizometer.
Results: The results showed that there is a meaningful difference between volunteers relaxation systolic blood pressure in pre and post test and also in post test 1 and 2, but there is not any meaningful difference between volunteers relaxation systolic blood pressure in these tests.
Conclusion: 10 week aerobic and immediately 6 week without exercise can be effective in relaxation blood pressure
Mohamad Reza Nazer, Mohamad Darvishi,
Volume 19, Issue 3 (special issue of passive defense 2017)
Abstract
Background: Overuse of antibiotics leads to microbial resistance, so that their arbitrary use leads to a higher level of microbial resistance, and ultimately, we need to have new and stronger antibiotics, which is a problem with these new antibiotics, "high cost and it's a catastrophic ". Today, in the community, such things as antibiotics and imported foods, and its impact on the health and consumption of antibiotics and its harm, remain unclear. The problem in this area is the lack of implementation or lack of guidelines, therefore, in this article we are going to examine the issue and solve it.
Materials and Methods: In this study, more than 100 sites and related articles that have been documented by ourselves or other scientists, as well as the collection of experiences and articles we have gained over the past twenty years in the field of infectious and microbial diseases, as well as indexed articles, SCOPUS, DOAJ, ISI and so on.
Conclusion: In the treatment of infectious patients with Iranian antibiotics self-sufficiency in the production of vaccine, strengthening the methods for accurate diagnosis of infections. Applied and operational research and purposeful use and rational administration of antibiotics to achieve resistance economics, as detailed in the text we will pay it.
Mohamad Reza Nazer, Hasan Savarian, Mohamad Darvishi,
Volume 19, Issue 4 (10-2017)
Abstract
Background: Type E hepatitis is a viral infectious disease, which affects the liver and can vary from an asymptomatic simple infection to a sudden-onset fatal disease, especially among pregnant women. The objective of the present study was to survey awareness and knowledge of general physicians working inKhorramabad in 2012.
Materials and Methods: This is an epidemiological and descriptive study, which assesses physicians’ awareness of hepatitis E. The desired data were collected using questionnaires and the collected data were analyzed by descriptive statistical methods, such as tables of frequency distribution, cross-tabulations, means, standard variances, and ratios.
Results: In the present study, 100 general physicians were surveyed, from among whom 62 physicians were male and 38 physicians were female.To assess the knowledge and awareness level of general physicians working in Khorramabad regarding hepatitis E, a 14-item questionnaire was designed. Their awareness and knowledge about the ways the disease is spread and about its prevalence levels was rather poor, but their knowledge regarding other aspects of the disease was moderate. No statistically significant difference was found between knowledge levels among male and female physicians. But, female physicians scored higher in items measuring awareness of prevention methods. The total knowledge score for physicians having practiced for less than 5 years was significantly different from physicians having more than 15 years of practice experience.
Conclusion: General awareness level of general physicians working in Khorramabad regarding hepatitis E is moderate. Given an 8 percent prevalence level of this disease in Khorramabad and the high mortality rates due to the disease, especially among pregnant women and young people, more training is needed for generalphysicians .
Mahmoud Darvishi, Vahid Valipour Dehnou, Rasoul Eslami,
Volume 22, Issue 2 (8-2020)
Abstract
Background: Aerobic exercise increases serum levels of BDNF, Irisin, and Cathepsin B, but the effects of it in the manipulated environment have not been investigated. Therefore, the aim of the present study was to investigate the effects of aerobic exercise in manipulated environment on serum levels of BDNF, Irisin and Cathepsin B in healthy active adolescents in Khorramabad.
Materials and Methods: In this quasi-experimental study, 10 healthy active male adolescents (age: 16.60±0.52 years) voluntarily participated. The subjects underwent a one-hour running with intensity between 12-13 in Borg scale one session in an ordinary environment and one session in an enriched environment interspersed with one week in a randomized cross-over design. Five minutes before and after the training, a blood sample was taken from the subjects. Serum levels of BDNF, Irisin and Cathepsin B were measured by ELISA. To analyze the data, paired samples t-test was used. Also, the percentage of changes were compared to pre-test.
Results: The results showed that in both environments serum levels of BDNF (p=0.001, p=0.001) Irisin (p=0.002, p=0.001) and Cathepsin B (p=0.001, p=0.0005) were significantly increased. However, there was only a significant difference between Irisin (p=0.043) and Cathepsin B (p=0.046) in the two environments. Also, the percentage of changes in all variables was higher in enriched environment.
Conclusion: Moderate intensity aerobic exercise in healthy active adolescents increased serum levels of BDNF, Irisin, and Cathepsin B. But, the manipulated environment has greater impact. Therefore, it is recommended to use a manipulated environment to make the most of the beneficial effects of aerobic exercise.
Mohammad Darvishi, Sarifeh Shahi, Mohammad Goli, Zahra Maghsoudi, Seyed Mohsen Ranjbaran, Parvaneh Momayezan Marnani,
Volume 23, Issue 2 (5-2021)
Abstract
Background: The growing interest of health products based on fruits and herbs has led manufacturers of oral health products to focus on fruits and plant products, which can be replaced by conventional chemical products to improve treatment methods and pay attention to the category of preventive dentistry.
Materials and Methods: In this study, the optical properties of cranberry and Cornus mas tea with Avantes broadband light source in the range of 300-1100 nm were investigated. The quasi-optical light spectroscopy test method includes 4cc of two cranberry and Cornus mas tea, which were prepared from about 1.7 g of dried fruit of these two fruits in 40 ml of 60oC water for 15 minutes. A review of 36 articles from PubMed, Scopus, and Google has been conducted by Usage Research from 1994 to 2020 to introduce the use of this fruit in the prevention and treatment of oral diseases.
Results: Cranberry and Cornus mas tea, both have a maximum peak spectrum around 759.8 nm and a minimum transmission spectrum around 439 nm. There is an acceptable agreement between the results of the transmission spectrum (in the range of 300-1100 nm) and the absorption spectrum (in the range of 400-750 nm). Cranberries, like Cornus mas, are chemically rich sources of antioxidants and anthocyanins.
Conclusion: Spectroscopic studies in terms of optical interpolation features showed that the two fruits were not significantly different. Studies of chemical properties also suggest that polyphenols with anticariogenic properties and anthocyanins by inhibiting interleukins, reduce the use of antibiotics to prevent and treat periodontal disease, prevent bacterial resistance in they oppose dental treatments using antibiotics. Therefore, there is no significant difference between these two fruits in terms of photochemical properties, which shows that these two fruits can be a good alternative for each other in terms of health and treatment in oral use.
Khadijeh Abdal, Maryam Kazempour, Roya Alizadeh, Marzieh Darvishi,
Volume 25, Issue 2 (8-2023)
Abstract
Background: The mandibular bone, similar to other bones in the human body, has a number of effective anatomical features that the use of radiographic images of these features can be effective in various findings, such as forensic dentistry. The present study aimed to estimate age, gender, and height by measuring the anthropometric radiographic indices of the mandible in 20-50-year-olds of Iranian race.
Materials and Methods: This cross-sectional study was performed on 100 people (50 female and 50 male) who were referred to the Orthodontics Department of Ilham Dental School in 2018. The required information was extracted and recorded from patients' panoramic radiographs. Statistical analysis was performed using descriptive statistics, t-test, and SPSS (version 22) software.
Results: The results of this study showed no significant difference between any of the studied variables with age (P>0.05). However, a significant difference was observed between mandibular width, mandibular height, gonial angle, mandibular canal, and the superior-inferior position of the mandibular foramen with gender and height (P<0.05). Moreover, no significant difference was found between the location of the mental foramen and the posterior and anterior position of the mandibular foramen with height (P>0.05). In addition, although no significant difference was seen between the antegonial angle and gender, the antegonial angle had a significant relationship with height (P<0.04).
Conclusion: There is a significant relationship between skeletal variables and gender and height, and it may be possible to determine the gender and height of individuals by evaluating radiomorphometric indices.
