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Greater Occipital Nerve Block by Bupivacaine/Methyl Prednisolone Vs. Bupivacaine/Normal Saline in Medication Overuse Headache
A Alizade Khatir,M Panahkhahi,A Khage Nasiri,T Ramim
Tehran University Medical Journal , 2012,
Abstract: Background: Medication overuse headaches (MOH) include headaches that last more than 15 days a month and usually occur after long-term use of analgesic. Most methods of medical treatment are ineffective. In some studies, great occipital nerve block is used to treat the headaches.Methods: This double-blind experimental study was performed in adult patients with MOH who attended Sina Hospital in Tehran from June 2009 to June 2011. Greater occipital nerve (GON) block was done in the two groups of patients by administering a combination of 3 ml of 0.5% bupivacaine and 2 ml of 5% saline or 3 ml of 0.5% bupivacaine and 80 mg of methyl prednisolone. We evaluated headache severity by Visual analog scale (VAS) and recorded days without headache. If patients were taking pain medications, preventive medications were given as usual before and after the injection. Student's t-test was performed for statistical analysis and a P<0.05 was considered significant.Results: Overall, 13 male and 19 female patients with a mean age of 39.88±8.76 years participated in the study. The mean reduction in headache severity one hour after injection was 5.56±1.03 and 4.63±1.92 in the first and second groups, respectively. Average days without headache one month after injection were 8.75 and 4.75 days in the first and second groups, respectively. There were no significant differences between the two groups.Conclusion: Both methods seem to be effective in medication overuse headaches treatment. This finding is important as non-responders to conventional methods will otherwise have a decreased quality of life.
Designing and making a differential astronomical seeing monitor
A. Darudi,S. Nasiri
Iranian Journal of Physics Research , 2005,
Abstract: Which place is an appropriate site for the construction of the Iranian National Observatory (INO)? In this paper part of the site selection process is reported. The emphasis is on the measuring of the seeing parameter for the pre-selected regions. These regions are examined by meteorological and geophysical studies and finally Kashan, Kerman, Qom and Ferdows sites were selected among 31 regions. To decide on the best site the seeing parameter had to be measured for the regions. To measure this parameter, one needs an astronomical seeing monitor. Designing and making a kind of seeing monitor and preparing the corresponding software is demonstrated and analysing of a sample of seeing data is discussed.
Selection of candidate sites for Iranian national observatory by wind-rose studies
S. Nasiri,A. Abedini
Iranian Journal of Physics Research , 2003,
Abstract: The site selection procedure for optical observatories housing a telescope with a sizeable aperture is described. The theory of seeing is briefly introduced and a special type of seeing monitor that is widely used for seeing measurements is discussed. The results of the meteorological studies mainly based on the wind-rose diagrams are presented. These are done for 31 preliminary selected candidate sites using the data obtained from meteorological synoptic stations during the last 20 years.
Photocatalytic Degradation of Methylene Blue using ZnO Nano-Particles
H Masombaigi,A Rezaee,A Nasiri
Iranian Journal of Health and Environment , 2009,
Abstract: "nBackgrounds and Objectives: Textile industrial wastewaters are one of the important sources of environmental contaminants. In the recent years, use of advanced oxidation processes, by producing highly active and reactive components such as hydroxyl radicals has been proposed. The aim of this research is photocatalytic degradation of methylene blue dye using the ZnO-nanoparticle with UVA irradiation. "nMaterials and Methods: photocatalytic degradation of methylene blue color using the ZnO- nanoparticles excited with UVA irradiation. In this research, photocatalytic degradation of methylene blue dye was study using different concentration of ZnO-nanoparticles under UVA irradiation in a batch reactor. "nResults: The results of this research show that removal of methylene blue dye has direct correlation with UVA intensity. The best results of dye degradation were reported in concentration of 150 mg/L ZnO nano-particles and the radiation intensity of 240 μW/cm2. Rate of dye removal was decrease with increasing of color concentration. Subsequent of color degradation, the initial COD were decresed by %60. "nConclusion: The photocatalytic degradation process using ZnO nano-particles under UVA irradiation could be remove the methylene blue dye and 60% of COD.
Genetic diversity among varieties and wild species accessions of pea (Pisum sativum L.) based on SSR markers
J Nasiri, A Haghnazari, J Saba
African Journal of Biotechnology , 2009,
Abstract: To assess the genetic relations inPisum genus and to examine putative duplicate accessions, 20 pea varieties (Pisum sativum L.) with 57 accessions from wild Pisum species fulvum, subspecies (subsp.) asiaticum, elatius, thebaicum, abyssinicum, transcaucasicum and arvense were analyzed using 10 out of 20 microsatellite primer pairs. We genotyped all accessions. In total, 59 alleles were identified in whole collection. The maximum number of alleles (8 alleles) was obtained from the PEACPLHPP, AF004843, and AA43090 loci. The maximum number of private alleles (4) in the wild collection was detected in AF004843 locus but in the cultivar collection, it was detected in AA430902 and PSBLOX13.2 loci. Cluster analysis and principal coordinate analysis located accessions in 3 groups and cultivated varieties were obviously separated from the wild accessions. Analysis of molecular variance (AMOVA) revealed that the intergroups component of variance (29%) is lower than the intragroups component of variance (71%). The lowest value of genetic differentiation ( Pisum genus and to examine putative duplicate accessions, 20 pea varieties (Pisum sativum L.) with 57 accessions from wild Pisum species fulvum, subspecies (subsp.) asiaticum, elatius, thebaicum, abyssinicum, transcaucasicum and arvense were analyzed using 10 out of 20 microsatellite primer pairs. We genotyped all accessions. In total, 59 alleles were identified in whole collection. The maximum number of alleles (8 alleles) was obtained from the PEACPLHPP, AF004843, and AA43090 loci. The maximum number of private alleles (4) in the wild collection was detected in AF004843 locus but in the cultivar collection, it was detected in AA430902 and PSBLOX13.2 loci. Cluster analysis and principal coordinate analysis located accessions in 3 groups and cultivated varieties were obviously separated from the wild accessions. Analysis of molecular variance (AMOVA) revealed that the intergroups component of variance (29%) is lower than the intragroups component of variance (71%). The lowest value of genetic differentiation (Pisum genus and to examine putative duplicate accessions, 20 pea varieties (Pisum sativum L.) with 57 accessions from wild Pisum species fulvum, subspecies (subsp.) asiaticum, elatius, thebaicum, abyssinicum, transcaucasicum and arvense were analyzed using 10 out of 20 microsatellite primer pairs. We genotyped all accessions. In total, 59 alleles were identified in whole collection. The maximum number of alleles (8 alleles) was obtained from the PEACPLHPP, AF004843, and AA43090 loci. The maximum number of private alleles (4) in the wild collection was detected in AF004843 locus but in the cultivar collection, it was detected in AA430902 and PSBLOX13.2 loci. Cluster analysis and principal coordinate analysis located accessions in 3 groups and cultivated varieties were obviously separated from the wild accessions. Analysis of molecular variance (AMOVA) revealed that the intergroups component of variance
Slow Mode Oscillations and Damping of Hot Solar Coronal Loops
A. Abedini,H. Safari,S. Nasiri
Physics , 2012, DOI: 10.1007/s11207-012-0054-1
Abstract: The effect of temperature inhomogeneity on the periods, their ratios (fundamental vs. first overtone), and the damping times of the standing slow modes in gravitationally stratified solar coronal loops are studied. The effects of optically thin radiation, compressive viscosity, and thermal conduction are considered. The linearized one-dimensional magnetohydrodynamic (MHD) equations (under low-$\beta$ condition) were reduced to a fourth--order ordinary differential equation for the perturbed velocity. The numerical results indicate that the periods of non-isothermal loops (i.e. temperature increases from the loop base to apex) are smaller compared to those of isothermal loops. In the presence of radiation, viscosity, and thermal conduction, an increase in the temperature gradient is followed by a monotonic decrease in the periods (compared with the isothermal case), while the period ratio turns out to be a sensitive function of the gradient of the temperature and the loop lengths. We verify that radiative dissipation is not a main cooling mechanism of both isothermal and non-isothermal hot coronal loops and has a small effect on the periods. Thermal conduction and compressive viscosity are primary mechanisms in the damping of slow modes of the hot coronal loops. The periods and damping times in the presence of compressive viscosity and/or thermal conduction dissipation are consistent with the observed data in specific cases. By tuning the dissipation parameters, the periods and the damping times could be made consistent with the observations in more general cases.
DEXAMETHASON ADMINISTRATION IN INTRAVENOUS REGIONAL ANESTHESIA: ITS AFFECT ON POST OPERATIVE PAIN A RANDOMIZED DOUBLE BLINDED CLINICAL TRIAL
H SARYAZDI,NASIRI NASIRI
Journal of Research in Medical Sciences , 2002,
Abstract: Introduction. Intravenous regional anesthesia (IVRA) is one of the successful method of anesthesia in relief of pain of surgery. It has a multiple advantages including feasibility, rapidity of recovery, rapid onest, muscular relaxation and controllable onset of anesthesia. But this technique dose not relief postoperative pain. In the previous studies it had been tried to add some drugs to local anesthetic in IVRA for relief postoperative pain. Methods. One hundred and ten adult patients in class I and II ASA scheduled for elective operation of unilatral upper extrimeties under IVRA, randomly allocated into interventional and control groups. NRA was done with Lidocaine 0.5 percent with or without dexamethason. Postoperative pain was assessed by visual analogue scale. Results. Addition of dexamethason to local anesthetic in IVRA resulted in better tolleration of turniquate pain and reduced VAS score. Frequency of severe postoperative pain was reduced in case group. Discussion. It seems that dexamethason usage in local anesthetic in IVRA prevents sever postoperative pain in patients. The results of this study is simillar to the study wich added ketorolac to IVRA solution.
Sourdough Effect on Reduction of Barbari Bread Staling
A Sadeghi,F SHahidi,A Mortazavi,M Nasiri
Journal of Science and Technology of Agriculture and Natural Resources , 2009,
Abstract: This study was intended to use the sourdough LAB containing specific starter cultures for Barbari bread production and reduction of its staling. For sourdough preparation, fresh microbial cells were collected by centrifugation from LAB cultures. Then 1.5% of flour (w/w) from these washed cells with the same amounts of wheat flour and tap water and 0.25% (w/w) active dry yeast extract, containing Saccharomyces cerevisiae were mixed. The effects of fermentation time (8, 16 and 24 hours), fermentation temperature (28, 32 and 36 oC) and type of starter culture (Lactobacillus sanfransicencis, Lactobacillus plantarum and a mixture of both LAB) were analyzed in a completely randomized design with factorial experiment with 4 replications. Bread staling was determined by its measuring crumb hardness and specific volume in 1, 24, 48 and 72 hours after baking. Correlation between variables was obtained by multivariate regression, and regression models were exhibited. The results showed that sourdough had significant effect (p≤0.05) on reduction of Barbari bread staling at 1, 24, 48 and 72 hours after baking in comparison with control sample. Moreover, the sample prepared with Lactobacillus plantarum (24 h fermentation time and 32 oC fermentation temperature) had the maximum specific volume and the least staling, 72 hours after baking.
Association of G-2548A Polymorphism in the Promoter of Leptin Gene with Plasma Leptin Level and Risk of Type 2 Diabetes
L Kohan,M Nasiri,A Habib,A Bolhasani
Journal of Shahid Sadoughi University of Medical Sciences , 2013,
Abstract: Introduction: Leptin, the obese (ob) gene product, is a cytokine-like hormone secreted mainly from adipose tissue; acting on a receptor site in the hypothalamus to inhibit food intake and stimulate energy expenditure. A G-2548G polymorphism in the leptin gene promoter has a strong influence on leptin gene expression and adipose tissue secretion. The aim of this study was to examine the association of the leptin G-2548A promoter polymorphism with leptin plasma level and susceptibility to type 2 diabetes. Methods: 100 patients with type 2 diabetes mellitus and 100 healthy controls were screened for the presence of G-2548A polymorphism using PCR-RFLP analysis. Body mass index, fasting leptin and fasting glucose were also determined. Results: Carriers with the GG genotype (20.02±5.6μg/L) had significantly (P<0.001) higher leptin levels than those with the AG genotypes (16.2±5.4μg/L) and AA genotypes (13.42±6.3). Also, LEP -2548GG genotype presented an increased risk of type 2 diabetes (OR: 3.26, 95%CI: 1.5-7.2, P=0.004). In the other words, GG genotypes in the region of -2548 are associated with increased risk of type 2 diabetes. Conclusion: The present study showed that G-2548A LEP polymorphism is important in regulating leptin plasma level and is associated with risk of type 2 diabetes. Thus, this polymorphism may act as a molecular marker for type 2 diabetes.
CRICETULUS MIGRATORIUS (GRAY HAMSTER), ANOTHER POSSIBLE ANIMAL RESERVOIR OF KALA-AZAR IN MESHKIN-SHAHR, IRAN
M. Mohebali,M. Nasiri Kanari,A. Kanani,H. Edrissian
Iranian Journal of Public Health , 1995,
Abstract: Altogether, 120 Rodents of 4 species were trapped alive in various parts of Meshkin-Shar district where visceral leishmaniasis is endemic. 13 of them were Cricetulus migratorius (gray hamste) that all were caught inside the living rooms. Nine of them showed Leishmania antibody in titers of ≥ 1:100 in direct agglutination test (DAT) and amastigotes were found in the spleen smears of 2 Cricetulus migratorius One of them showed Leishmania antibody in titer of 1:400 and another one in titer 1:800 in DA test. This is the first report on the natural infection of a rodent with Leishmania in its internal organs in the endemic foci of visceral leishmaniasis in Iran.
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