Showing 14 results for Ghazanfari
Volume 2, Issue 2 (Special for Virtual Conference of Health Education & Promotion - 2014)
Abstract
Aim: Injury from needle is one of the main ways of transmitting blood diseases in the medical staff. Prevention and reduction of such diseases' side effects have been emphasized by the Health Ministry. This study aimed to investigate factors influencing the behavior of the Elam city medical staff when working with sharps instruments. Methods: In a cross-sectional study, using a census method, all healthcare staff working in the health centers of Abdanan Dehloran city (total n=66) after providing written informed consent were enrolled. Data were gathered by a questionnaire. After verifying the validity and reliability, the data were collected, and analyzed using SPSS19 and descriptive statistics, Chi-square and t-test. Findings: 59% of the participants were male; 80% were married; 62% had academic educations, and 47% worked in the nursing and injection sections. The mean scores of knowledge and attitude of the participants were 3.1±1.38 and 1.7±4.1, respectively, and just 13.4% of the subjects had not reported control tests and injury events. Conclusion: Knowledge, attitudes and practices of the medical staff of injuries from sharp objects are not desirable. it seems that empowering the staff through theoretical and practical training is proper solution in this regard.
Volume 2, Issue 3 (9-2017)
Abstract
Background: Students are the most dynamic people in the society and their health is to a great extent a prerequisite for the health of most individuals in the society. Musculoskeletal disorders (MSD) are one of the most important factors that effect on general health. This study was conducted to The Relationship Between General Health and MSD among Tarbiat Modarres University Students.
Methods and Materials: This descriptive-analytic study was conducted on 306 college students were enrolled by using nonprobability purposive sampling methods and also availability. Data was obtained based on the demographic data questionnaire, musculoskeletal researcher-made questionnaire and the standard General Health Questionnaire (GHQ-12). After collecting the required data, SPSS software version 23 was used for descriptive and statistical analysis (Spearman/Pearson chi-square, phi Cramer’s V).
Results: The results showed that 60.6% and 72% of male and female students had desirable general health. Also, the findings showed that general health decreases with age growth (P = 0.015). Among the musculoskeletal disorders, only low back pain and neck pain were associated with general health, as students who suffered from low back pain and neck had an unhealthy public health (P < 0.05).
Conclusion: The results of this study showed a high prevalence of general health disorders and musculoskeletal disorders among students. Musculoskeletal disorders have a profound effect on the general health of students, thus jeopardizing their general health. Therefore, consideration should be given to the factors causing these disorders and the appropriate planning to overcome it.
Volume 4, Issue 3 (Summer 2018)
Abstract
Aims: Transportation of clinical samples and long-term recoverability of fungal strains are critical to epidemiological studies. In addition, the study of fungi often requires the use of living pure cultures. The aim of this study was to evaluate the methods used to preserve culture collections of dermatophytes, consisted of storage in sterile distilled water, cryopreservation with glycerol, preserving in tryptic soy broth (TSB), and freezing mycobiotic agar.
Materials and Methods: in this experimental study, ninety-two dermatophyte isolates belonged to 10 species were tested. The freezing protocol was done in 4 forms of sterile distilled water, cryopreservation with glycerol, freezing mycobiotic agar, and preserving in TSB. The viability of the dermatophytes species was assessed after 3 years at morphological (macro and microscopic features), physiological (Using Dermatophyte Test Medium; DTM, urease test media, and the hair perforation test), and genetic levels by restriction fragment length polymorphism (RFLP).
Findings: The survival rate was 84 out of 92 water stored fungal strains (91.3%) and 81 out of 92 mycobiotic agar stored strains (88.0%) and 75 out of 92 glycerol 40% stored strains (81.5%) and 43 out of 92 TSB stored fungal strains (46.7%). Overall, more than 88% of the strains survived in the distilled water storage and freezing mycobiotic agar, methods, while storage in TSB had the least success in the maintenance of dermatophytes.
Conclusion: The procedure to preserve cultures in sterile distilled water is reliable, simple, and inexpensive.
Volume 9, Issue 1 (Winter 2021)
Abstract
Aims: The high prevalence of Cesarean section (CS) is a global health concern globally, especially in Iran. The current study aimed to evaluate the effect of a Theory of Planned Behavior (TPB) based educational intervention on preventing elective cesareans.
Materials & Methods: An interventional study (NCT02929875) was conducted on a sample of 100 nulliparous pregnant women attending health care centers in Kermanshah, Iran, 2016. Women were randomly selected and assigned into either intervention or control groups on a 1:1 basis. The intervention group received a theory-based (Theory of Planned Behavior) health education intervention, while the control group received only standard care. A questionnaire containing items on TPB constructs, including attitude, subjective norms, perceived behavioral control, and intention, was used to collect baseline and 1-month follow-up assessments. Each woman also received a phone call after childbirth to record their delivery method. Data were analyzed using SPSS version 15 at a significance level of p<0.05. The paired t-test, the independent t-test, the chi-square, and ANCOVA were used for data analysis.
Findings: The results revealed significant differences in scores of attitude, subjective norms, perceived behavioral control, and behavioral intention in the intervention group before and after the intervention (p<0.05). Additionally, the intervention group chose elective cesarean less than the control group (p<0.05). The risk of having an elective cesarean section in the intervention group was about one-fifth of the control group (RR= 0.21; CI=0.4197 to 0.0018).
Conclusion: According to this randomized control trial results, the TPB-based education improved the TPB constructs and NVD rates by providing education to women and their close friends or relatives during pregnancy.
Volume 9, Issue 2 (Spring 2021)
Abstract
Aims: Dental caries in preschool children continues to be an important health problem in most countries. This study aimed to determine the effect of education to mothers based on the health belief model on decreasing the dental plaque index of 3–6 years old children.
Materials & Methods: This experimental study was conducted on 88 mothers and their 3–6-years old children (NTotal=176) referred to the Health Care Center No. 1 in Ilam in 2015. Participants were randomly selected using a random number and randomly assigned to either intervention or control groups on a 1:1 ratio basis. A three-part questionnaire was used. Three training sessions were given to the intervention group; each lasted for one hour once a week. At one-month follow-up, the post-test questionnaires were administered to both groups. A trained dentist assessed the oral health status of children using O’Leary plaque index with a dental mirror and a probe in broad daylight. SPSS 26 was used for data analysis, and the chi-square and T-test were applied to compare the data.
Findings: The mean ages of mothers and their children were 31.28±5.63 years and 4.5±1.56 years, respectively. Despite the similarity of groups at the beginning of the study (p>0.05), significant differences were found between groups in follow-up (p≤0.001) and between before intervention and follow-up in the intervention group (p≤0.001) in all health belief model constructs, oral health practice, and the plaque index.
Conclusion: Providing mothers with oral health education for their children can promote their beliefs and behavior relating to brushing their children’s teeth, and decreasing the plaque index.
Volume 12, Issue 2 (6-2012)
Abstract
Abstract: Scouring is one of the main causes of failures of bridges and piles in rivers and marine environment. So the estimation of scour depth around bridge piers and piles is of great importance. On the other hand, since the scour depth properties should be considered in designs by the designers, the importance of acceptable accuracy to estimate the scour depth properties will be quite highlighted. Regarding the importance of scouring investigation, there are several empirical formulas that have been presented by researchers but acceptable results have not been provided yet. Considering the fact that the prediction of scour depth around a pile is complicated and is affected by sediment characteristics and sediment transport mechanism, current properties and pile geometries, new approaches other than empirical ones are being sought by researches. Recently alternative methods like data mining approaches have been widely applied to simulate complicated problems. Artificial Neural Networks (ANN) as a famous data mining approach has been successfully used to estimate the scour properties around a pile. However, performances of Support Vector Machines (SVM) as another type of data mining approach are not explored yet. SVM has been recently applied in fields of particle identification, face identification, text categorization and bioinformatics. In this study SVM is applied to estimate the scour depth around a pile and the results are compared with those of the ANN by MLP network with one hidden layer and back propagation training algorithm. Performances of all methods are tested by experimental data sets and the results are compared using statistical measures. Results of statistical measures of verification stage indicate that SVM provides a better estimation of scour depth than ANN and empirical formulae. They also indicate that data mining approaches provide better prediction than empirical approaches.
Volume 14, Issue 3 (9-2011)
Abstract
Objective: Leishmaniasis is one of the six most common parasitic infections in tropical regions. There are different therapeutic modalities. However therapeutic resistance is developed and resulted in numerous problems. So evaluation of other therapeutic modalities is performed extensively. We compared the therapeutic response of cutaneous leishmaniasis with Glucantime and Garlic extract and it'R10 in animal model.
Materials and Methods: This experimental study was conducted in Shahed University. The therapeutic response of cutaneous leishmaniasis to Glucantime and Garlic extract and R10 in animal model was studied in BALB/c, outbred SW mice and C57BL/6 mice. These three races were divided in four groups according to receiving either one of these three agents or no treatment (control). The therapeutic response was evaluated according to parasitic load before and after treatment and also with measuring the size of the lesions.
Results: The results showed that R10 had good therapeutic efficacy in treatment of lesions in mice (P<0.05) that this efficacy was significant in sixth, seventh and eighth weeks after the treatment. There was also a statistically significant difference between the groups regarding the parasitic load (P<0.05).
Conclusion: According to the results, it may be concluded that R10 extract would have a good efficacy in treatment of cutaneous leishmaniasis that is comparable with glucantime.
Volume 15, Issue 4 (10-2024)
Abstract
Tautomers are isomers of a molecule that exist in solution or in a cell. They are interchangeable forms because chemical bonds are rearranged many times spontaneously. This is different from chirality, where molecules are mirror images (or enantiomers) of each other. DFT method was carried out to study the tautomerization of the mechanism of carmustine as an anti-cancer drug. In the carmustine structure, two conformational tautomers were predicted and both two tautomer structures were demonstrated for considering the role of changing atoms in the conformation of carmustine. Relative energies obtained at the B3LYP/6-311G++ (d,p) , Aug-cc-pVDZ and 6-311++g(2d,2p) basis sets. The highest occupied molecular orbital (HOMO), The lowest unoccupied orbital (LUMO), and bandgap energy of structures were calculated. Electronics parameters were obtained. electrophilicity. Electronegativity, softness, and hardness for determining the reactivity of compounds in biological media. have been studied. According to the data, the structure of carmustine and two tautomer conformations are stable but T1 is more stable than the other one.
Ahmad Ghazanfari, Ahmad Assempour, Mostafa Habibi, Ramin Hashemi,
Volume 16, Issue 1 (3-2016)
Abstract
Use of Forming limit diagrams (FLD) in process design of metal forming is a conventional method. Therefore many experimental and theoretical efforts have been carried out in order to investigate the FLDs. Many ways to obtain this FLDs and their effective parameters have been studied. But the stress state at these studies is planar which lead to an untrue model for several metal forming process such as incremental sheet forming. With this technique, the forming limit curve (FLC) appears in a different pattern, revealing an enhanced formability, compared to conventional forming techniques. Therefore, in this study, the effect of through thickness shear stress has been examined on the prediction of the forming limit diagrams (FLDs). Determination of the FLD is based on the Marciniak and Kuczynski (M–K) model with some modifications on the stress states for consideration of the through thickness shear stress effects. Also, the effective range of this stress has been investigated. The results showed that if the through thickness shear stress has a 10 per cent of yield stress value, this stress component has no effect on the FLD.
M. Azadi Tabar, M.h. Ghazanfari,
Volume 19, Issue 3 (March 2019)
Abstract
The aim of this study was to investigate the surface free energy on the surface of calcite rock and also on the surface of aged calcite in Surfapore Nanofluid using a contact angle measurement. For this purpose, calcite surfaces were prepared by cutting to an approximate size of 3×3×0.4cm3 and grinded and polished to achieve different roughnesses. The purity and roughness of the samples were determined by X-ray diffraction and atomic force microscopy, respectively. Using the static contact angle on the surface of calcite and calcite aged in the Nanofluid, surface energy determined by three methods of geometric mean, arithmetic mean and Zisman plot showed surface free energy between 30-40mN/m, and polar forces overcome dispersion at calcite surface. After aging calcite surface in the Nanofluid, surface energy reached less than 12mN/m. This surface free energy reduction indicates an increase in the contact angle of the fluids on the aged calcite surface in the Nanofluid. The results of this study will help to better understand the surface properties of calcite in the presence of Nanofluid, as well as how to change its wettability to gas wet conditions, taking into account the static contact angle.
R. Nezami, M. Ghazanfari,
Volume 19, Issue 12 (December 2019)
Abstract
Vibration analysis of the plate is an important topic in high-speed train body design. Because of the dynamic loads on plates which are used in the wagon body of the train, vibration analysis and determination of the amount of deflection and bending of the structure is important in wagon design. A plate which is used in the high-speed train is composite plate. Composite plates are considered because of many advantages relative to the other plates, such as low weight, high strength and cost-effective. In this paper, the nonlinear free vibration analysis of the used plate in the wagon body of high-speed trains has been presented. First, a three layers sandwich plate used for car body of high-speed trains has been transformed into a single layer equivalent orthotropic plate. Von-Karman theory and the Galerkin method have been employed to solving the equations of motion of the equivalent orthotropic plate. The nonlinear natural frequencies of the first four modes of the system have been determined using the numerical and variational iteration methods (VIM). Then the effect of different parameters on the value of nonlinear frequencies of the first four modes has been studied. The Difference lower than 0.1% is observed between the determined natural frequencies by VIM, with initial condition limited to zero, and natural frequencies determined by linear vibration. The results show that natural frequency is increased by increasing elasticity modulus of the face, the thickness of the core and the thickness of the face of the sandwich plate. In addition, because of nonlinearity of plate vibration equations, natural frequencies of composite plate are increased by increasing initial condition.
Volume 19, Issue 131 (January 2022)
Abstract
L-glutamate is one of the most abundant amino acids in the body, which plays an important role in various cellular processes and also acts as a precursor of bioactive molecules, which has received much attention due to its medicinal and food applications today, and as an important amino acid. Industrial is produced commercially. L-glutamate is one of the metabolites produced by these bacteria, which is also biologically active. In this research, the production of L-glutamate by three autochthonous lactic acid bacteria (Lactobacillus brevis PML1, Lactobacillus plantarum 1058 and Lactobacillus fermentum 4-17) at three percentage levels of dairy sludge (0, 10, 20%), three levels of soybean meal (0, 2.5, 5%) and three levels of fermentation time (48, 84, 120 hr) were optimized using RSM. TLC was used for qualitative evaluation and HPLC was used for quantitative estimation of L-glutamate production, and then the antimicrobial and antioxidant properties of the fermentation extract were evaluated and compared with the control sample.
F.s. Moghanlou , E. Ghazanfari Jajin, M. Vajdy Hokmabad , Sh. Jafargholinejad ,
Volume 20, Issue 9 (September 2020)
Abstract
The study of micro-scale fluid behavior is known as microfluidics, which has received much attention in many scientific fields. In the current research, the droplet generation in the micro channel has been studied numerically and experimentally. Two micro channels were fabricated by soft lithography method and the results of generated droplets were compared. The process of droplet formation was investigated using two fluids including water (dispersed fluid phase), and oil (continuous fluid phase) at different flow ratios. The images of the droplet formation and crossing steps in the micro channels were analyzed using image processing. The results showed that by increasing the ratio of dispersed to continuous flow, the size of droplets was increased, the droplet formation distance (the distance of the produced droplets) was increased, and the frequency of droplets generation was decreased. Also, the proposed new geometry leads to the production of smaller droplets with higher production frequencies. In the basic geometry, the droplet diameter was observed to be between 117 and 700 micrometers while in the proposed geometry, the diameter of droplets is between 46 and 466 micrometers. In the proposed geometry, the size of the produced droplets decreases, and the production frequency increases.
Volume 23, Issue 1 (1-2017)
Abstract
The age of maturity is one of the most important issues in the jurisprudence book” Hijr”. The Shiite and Sunnite jurisprudents discussing prohibition of repossessing the properties deals with the maturity conditions. In this part they study maturity age of male and female and neuter. In this article jurisprudentially researching the writer reviews the verses and Riwayas and jurisprudents’ opinions concerning the age of male maturity. In this research he tries to research literally the influential words, then discuss the views of Shiite and Sunnite jurisprudents and show that there is no consensus about it. In this study the Quranic verses even refereed implicitly are considered too. To continue the hadiths concerned are jurisprudentially studied in nine parts. The results is that the specific age cannot be the reason, but according to the different opinions of the jurisprudents and lack of Quranic arguments and scattered Riwayas and mentioning the various ages for different subjects, a certain age is not the sign for maturity and another reason such as growing pubic hair but specially having wet dream should be sufficed
