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Search Results: 1 - 10 of 31358 matches for " Z. Zamani "
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Journal of Research in Medical Sciences , 2001,
Abstract: Introduction. Hypertension is one of the most common causes of cardiovascular problems in our society. Diet is the cheapest and the most accessible method of blood pressure (BP) control. BP is associated with arterial stiffness which affects cardiac afterload. This study evaluate the effect of diertary Na and K on vascular compliance. Methods. We selected ninty six patients referred to Isfahan cardovascular Research center (affiliated to IUMSHS). Inclusion criteria were mild hypertension (90 0.05). Group B: Δ SBP= -0.82 mmHg; Δ OBP = -7.09 mmHg; Δ SV/PP= -0.22 ml/mmHg per beat (P> 0.05). Group G: Δ SBP =-7.22 mmHg; Δ OBP= -4.63 mmHg; Δ SV/PP= -0.01 ml/mmHg per beat (P>0.05). Discussion. We recommend the above diets specially type B, as the first step in the treatment approach of mild HTN in our society. These dietary modifications didn't have any effect on arterial stiffness in 16 weeks of follow up. It is may be necessary to continue this intervention for changing arterial stiffness.
A simple 2D interpolation model for analysis of nonlinear data  [PDF]
Mehdi Zamani
Natural Science (NS) , 2010, DOI: 10.4236/ns.2010.26080
Abstract: To determination the volume and weight of non uniform bodies, such as in ore deposits evaluation for mining and rock cutting for construction, the methods of interpolation are usually used. The classic curves, which are frequently used to interpolate onedimensional data are cubic spl ine, Bspline and Bezier curves. These methods have good efficiency for determination of geom etric characteristics of nonregular masses. They have some limitations and problems with two dimensional interpolation analysis such as for ming large linear systems of equations with a lot of entries and difficulty encounter with their solutions. In this research the twodimensional splines are used, which have the advantages of simplicity and less computational operations ef fort. The spline functions that are applied have the continuity of C1 at elements boundaries. The presented model has suitable efficiency for vo lumes of large extents governing to lots of data.
A simple piecewise cubic spline method for approximation of highly nonlinear data  [PDF]
Mehdi Zamani
Natural Science (NS) , 2012, DOI: 10.4236/ns.2012.41012
Abstract: Approximation methods are used in the analysis and prediction of data, especially laboratory data, in engineering projects. These methods are usually linear and are obtained by least-square-error approaches. There are many problems in which linear models cannot be applied. Because of that there are logarithmic, exponential and polynomial curve-fitting models. These nonlinear models have a limited application in engineering problems. The variation of most data is such that the nonlinearity cannot be approximated by the above approaches. These methods are also not applicable when there is a large amount of data. For these reasons, a method of piecewise cubic spline approximation has been developed. The model presented here is capable of following the local nonuniformity of data in order to obtain a good fit of a curve to the data. There is C1 continuity at the limits of the piecewise elements. The model is tested and examined with four problems here. The results show that the model can approximate highly nonlinear data efficiently.
Pattern of Complementary and Alternative Medicine Use in Urban Population
Z Yekta,AR Zamani,M Mehdizade,Z Farajzadegan
Journal of Research in Health Sciences , 2011,
Abstract: Background: To determine the prevalence and patterns of Complementary and Alternative Medicine (CAM) use in urban population in Isfahan. Methods: In a crossa€“sectional study through two-stage sampling methods, 870 individuals were selected from Isfahan Province, center of Iran. We selected 20 clusters randomly and chose one household from each cluster by chance then 24 households were included consequently. Subsequently a resident of each household aged 18 years or older was selected randomly. We assessed the rate of use, types of alternative medicine, and conditional disease during recent two years. Results: The overall use of at least one method of complementary and alternative medicine was 62.5%. The most common problems were as follows: digestive problem, obesity and hyperlipidemia, as well as anxiety and depression. Herbal medicine and bless therapy were the most common methods that people chose. Conclusion: Regarding to high prevalence of complementary and alternative medicine use, more attention to complementary and alternative medicine is mandate for physicians and health system managers. Health authorities' supervision and training of traditional practitioner is important not only for its economic impact and postponement of seeking treatment, but also for its untoward side-effects either alone or in combination with orthodox medicines.
Effects of zinc and manganese as foliar spray on pomegranate yield, fruit quality and leaf minerals
Hasani,M; Zamani,Z; Savaghebi,G; Fatahi,R;
Journal of soil science and plant nutrition , 2012, DOI: 10.4067/S0718-95162012005000009
Abstract: effects of foliar sprays of zinc and manganese sulfates on the fruit yield and quality as well as leaf nutrients concentration of pomegranate were studied during 2010 growing season in an orchard with a soil ph of 7.5 and ec of 5.2 (ds m-1). zinc and manganese sulfates were applied two times at the rate of 0, 0.3 and 0.6 percent under a factorial design on the base of completely randomized blocks. mn sprays had positive significant effects on the fruit yield, the aril/peel ratio, tss, weight of 100 arils. juice content of arils, anthocyanin index, fruit diameter and leaf area. zn effects were also significant for tss, tss/ta ratio, juice content of arils and leaf area. foliar spray of mn significantly increased mn and n but decreased zn and cu concentrations in leaves. foliar sprays of zn significantly increased zn but decreased mn and p concentrations in the leaves. according to the results, the suitable combination of these two micronutrients for studied characters of pomegranate under prevailing conditions was foliar spray of 0.6% mnso4 and 0.3% znso4.
Pediatric septic arthritis: a 10- year epidemiologic study in Imam Khomeini Hospital Complex
Zamani A,Raeeskarami SR,Akbrai Asbagh P,Oloomi Yazdi Z
Tehran University Medical Journal , 2010,
Abstract: "n Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:Arial; mso-bidi-theme-font:minor-bidi;} Background: Septic Arthritis is an acute infection of intra-arthicular space. Delay in diagnosis and in appropriate treatment may lead to prolongation of treatment duration and poor outcome. We decided to evaluate clinical aspects of this disease in our department pediatric department, Imam Khomeini Hospital complex, Tehran, Iran during a 10 years period."n"nMethods: In a retrospective cross-sectional study, 60 patients with age from 1 month to 14 year-old during 1996-2005 were evaluated. The demographics characteristics, clinical observations (signs & symptoms) and paraclinic values were gathered from medical records and analyzed with statistical tests. "n"nResults: Pain and Swelling was seen in all, joint limited motion in 80% (50 cases) claudicating in 64% (38 cases), fever in 80% (48 cases), monoarticular disease in 80% (48 cases) and polyarticular one in 20% (12 cases) of them. Hip was most Common involved joint 62% (37 cases), elevated ESR was seen in all patients. CRP was positive in 85% (51 cases). Leuckocytosis was found in 65/8% (17 cases) of cases. In infectious cases, Staphylococcus aurous was responsible organism in 65.6% (16 cases), klebsiella in 12.4% (3 cases), Streptococcus pneumonia in 12.3% (3 cases), group b streptococcus in 4.1% (1 case), Hemophilus Influenza type b in 4.1% (1 case) of study patients. With therapy ESR was normalized in 64% (39 cases) and CRP was normalized in all patients. "n"nConclusions: In general, all children with complaint of fever, pain, and limited joint motion or claudicating should be suspected for septic arthritis.
Evaluation of the Effect of Different Ferrule Designs on Fracture Resistance of Maxillary Incisors Restored with Bonded Posts and Cores
Z. Mahdavi Izadi,E. Jalalian,A. Eyvaz Ziaee,L. Zamani
Journal of Dentistry of Tehran University of Medical Sciences , 2010,
Abstract: Introduction: In cases of severe hard tissue loss, 2 mm circumferential ferrule is difficult to achieve. So in these cases we should use different ferrule designs.This in vitro study investigated the effect of different ferrule designs on the fractureresistance of teeth restored with bonded post and cores.Materials and Methods: Forty freshly-extracted central incisors were endodontically treated. The teeth were randomly divided into four groups; group 1 were teeth with 2 mm circumferential ferrule above the CEJ, group 2 were teeth with 2 mm ferrule only on the palatal side of the teeth, group 3 consisted of teeth with 2 mm ferrule only on the facial side and group 4 were teeth with 2 mm ferrule on the palatal and facial side of teeth with interproximal concavities.All teeth were restored with fiber posts and composite cores. The specimen was mounted on a universal testing machine and compressive load was applied to the long axis of the specimen until failure occurred.Results: The fracture resistance was 533.79 ± 232.28 in group 1, 634.75± 133.35 in group 2, 828.90 ±118.27 in group 3 and 678.78± 160.20 in group 4. The post hoc analysis showed statistically significant difference between groups 1 and 3 .Conclusions: The results of this in vitro study showed that facial ferrule increases the fracture resistance of endodontically treated teeth restored with bonded post and cores.
Early Detection of Immunization: A Study Based on an Animal Model using 1H Nuclear Magnetic Resonance Spectroscopy
Z. Zamani,M. Arjmand,M. Tafazzoli,A. Gholizadeh
Pakistan Journal of Biological Sciences , 2011,
Abstract: Vaccines require a period of at least three months for clinical trials, hence a method that can identify elicitation of immune response a few days after the first dose is a necessity. Evolutionary variable selections are modeling approaches for proper manipulation of available data which were used to set up an animal model for classification of time dependent 1HNMR metabolomic profiles and pattern recognition of fluctuations of metabolites in two groups of male rabbits. One group of rabbits was immunized with human red blood cells and the other used as control. Blood was obtained every 48 h from each rabbit for a period of six weeks and the serum monitored for antibodies and metabolites by 1HNMR spectra. Evaluation of data was carried out using orthogonal signal correction followed by principal component analysis and partial least square. A neural network was also set up to predict immunization profiles. A distinct separation in patterns of significant metabolites was obtained between the two groups, just a few days after the first and the second dose. These metabolites were used as targets of neural networks where each sample was used as test, validation and training and their quantitative influence predicted by regression. This model could be used for prediction of immunization in rabbits a few days after the first dose with 96% accuracy. Similar animals and human vaccine trials would assist greatly in reaching early conclusions in advance of the usual two month immunization schedule; resulting in an appreciable saving of cost and time.
Prevalence of Glucose-6-Phosphate Dehydrogenase (G6PD) Deficiency in Newborns
E Amini,Z Oloumi,A Zamani,M Ghasemi
Iranian Journal of Pediatrics , 2006,
Abstract: Background: Glucose-6-phosphate dehydrogenase (G6PD) deficiency can cause hemolytic anemia and neonatal jaundice. Screening of newborns by examining the cord blood for enzyme activity has been proposed for prevention of its complications. The aim of the present study was to determine the incidence of G6PD deficiency in newborns in Vali-e-Asr hospital, Tehran. The relation between G6PD deficiency and the variables of sex, gestational age, jaundice, hemolysis, and anemia was also examined. Methods: 450 newborns during a 9-month period were examined for G6PD activity by Fluorescent Spot Test of specimens of cord blood and for other variables. Findings: 9 neonates (8 males and 1 female) were G6PD deficient. The incidence of G6PD deficiency was 2% (3.3% for boys and 0.5% for girls). Six (66.7%) cases of G6PD deficiency developed jaundice. None of the G6PD-deficient neonates developed anemia. Only one case had a high cord blood reticulocyte count. G6PD deficiency was correlated with sex and neonatal jaundice. There was no correlation between G6PD deficiency and gestational age, hematocrit and reticulocyte count of the cord blood. Conclusion: The incidence of G6PD deficiency in newborns in Vali-e-Asr hospital in Tehran was 2%. Screening of the male newborns for enzyme deficiency by examining the cord blood is suggested.
Evaluation of Serum Levels of Essential Trace Elements in Patients with Pulmonary Tuberculosis Before and After Treatment by Age and Gender
F. Pourfallah,S. Javadian,Z. Zamani,R. Saghiri
Pakistan Journal of Biological Sciences , 2011,
Abstract: The purpose of this study was to evaluate the levels of Zinc, Copper, Iron and Copper/Zinc ratio in the serum of adult patients with pulmonary tuberculosis in Iran. Serum levels of Zinc and Copper were determined by flame atomic absorption spectrophotometer and serum iron concentration was measured by using an Auto Analyzer. The study group consisted of 50 pulmonary tuberculosis patients before treatment and after 6 months of anti-tubercular therapy. Levels of serum Zn (p<0.001) and Fe (p<0.001) in TB patients were significantly increased after 6 months of anti-tubercular therapy. However, serum Cu concentration (p<0.01) and Cu/Zn ratio (p<0.05) were decreased after 6 months of anti-tubercular therapy. Some studies indicated a strong association of Zn, Cu, Fe and the Cu/Zn ratio with TB. In this study, we found remarkable change in Cu/Zn ratio. Some researchers mentioned that serum Cu/Zn ratio could be used as an important laboratory marker for diagnosis and treatment of tuberculosis. They also mentioned that trace element levels must be closely monitored during the process of disease.
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