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Effect of forced swimming stress on in-vivo fertilization capacity of rat and subsequent offspring quality
Saki Ghasem,Rahim Fakher,Vaysi Ozra
Journal of Human Reproductive Sciences , 2010,
Abstract: Aims: This study aimed to determine the effect of 50 days of forced swimming stress on fertilization capacity of rat and subsequent offspring quality. Setting and Design: The prospective study designed in vivo. Materials and Methods: Total 90 Wistar rats including 30 adult male (3 months of age, weighing 210 ± 10.6 g) and 60 female rats (3 months of age, weighing 230 ± 12.2 g) were engaged in this study. Male rats were randomly divided in two equal groups (n=15): Control and experimental groups. Animals of the experimental group were submitted to forced swimming stress for 3 min in water at 32oC daily for 50 days. Then all adult male rats were mated with normal females (2 per each male) for 7 days. Female rats were sacrificed and autopsy was performed on day 20 of pregnancy when uterus and ovaries were examined for the number of corpora lutea, dead and live fetuses, embryo resorption, implantation sites, and fetus weight. Conclusion: Results of this study have important implications for families attempting pregnancy. Stress pursuant to life events may have a negative impact on in vivo fertilization capacity of male rats and subsequent offspring quality.
Saeed Samadi,Meysam Ghalandari,Ozra Bayani
International Journal of Economics and Research , 2012,
Abstract: Undoubtedly enhancement of productivity is one of the necessities of economic growth. Recognizing effective factors on the total productivity growth or decrease are among the issues considered by researchers. According to many economists high inflation in economy is one of the most important factors which disrupts productivity growth. On the other side, many developing countries believe that they could obtain economic growth through exports increase. Today business is the development engine of economy of most advanced and developing communities and has found its role and place in economic activities. On the other side, economic growth doesn't depend on size and extent of human force rather it depends on its efficiency. Improving human force quality causes the labor force to become more skilled and experienced from one side and advancement and improvement of knowledge and technology cause the capital factor to become more efficient from the other side. Thus it is observed that development of efficiency and productivity in both production factors is resulted from training and advancement of technical knowledge. Therefore, primary objectives of this study are to analyze the impacts of inflation and total factor productivity on each other and studying the impacts of tradeliberalization on inflation and productivity variables in Iran in the period 1982-2010. Inserting commercial models into the growth models and their relation with inflation and using vector auto-regression method (VAR)are innovations of the present study. Variables of models in this study are productivity growth, nominal growth of wage, inflation rate, volume of money, interest rate and openness degree of business. Research data was adopted from WDI software and the Central Bank website. Results of the study indicate reverse impacts of inflation and productivity on each other and positive impact of trade liberalization on productivity.
The Relationship between Macroeconomic Variables and Stock Returns in the Tehran Stock Exchange
Saeed Samadi,Ozra Bayani,Meysam Ghalandari
International Journal of Academic Research in Business and Social Sciences , 2012,
Abstract: Relationship between stock returns and macroeconomic variables of interest to many researchers have been, But so far not reached a definitive conclusion about this relationship. This relationship varies from country to country due to the economic structure provides different results. In this study the impact of macroeconomic variables including exchange rates, world gold prices, inflation, liquidity and oil price on the stock returns index in Tehran Stock Exchange data is evaluated monthly over the period 1379 to 1389 by “ GACH “ economic model. Results showed that the gold price , inflation and exchange rate variables influencing on the stock return and oil price and liquidity had no impact on the stock returns. The results indicate that there is a lever on Tehran stock market.
Transvaginal Ovarian Drilling in Infertile Women with Polycystic Ovary Syndrome Resistant to Minimal Stimulation
Alieh Ghasemzad,Laya Farzadi,Ozra Ajalli
Journal of Medical Sciences , 2007,
Abstract: Polycystic ovary syndrome (PCOS) is the commonest cause of anovulatory infertility. Treatment modes available are numerous mainly relying on ovarian stimulation with FSH, a reduction in insulin concentrations and a decrease in LH levels as the basis of the therapeutic principles. Surgical management of anovulatory infertility also, has enjoyed a revival in recent years. The aim in present study was to evaluate the efficacy of transvaginal ovarian drilling (TVOD) in infertile women with PCOS resistant to minimal stimulation protocol. In this prospective study 30 infertile women with PCOS and resistant to clomiphene citrate and HMG were selected. After ovarian drilling, the number and size of dominant follicles was increased. Cumulative ovulation rate increased to 90.3% in the cycles after ovarian drilling. Cumulative pregnancy rate was 26.7% at 6 months after TVOD. Miscarriage rate in women who conceived after TVOD, was 6.7% in comparison with 12-20% in general population. With the excellent results after TVOD in difficult to treat patients with PCOS, routine use of this procedure is recommended in these patients before more expensive techniques such as IVF.
A Method for the Measurement of Photons Number and Squeezing Parameter in a Quantum Cavity
Ghasem Naeimi,Siamak Khademi,Ozra Heibati
ISRN Optics , 2013, DOI: 10.1155/2013/271951
Abstract: Measurement of photons number in a quantum cavity is very difficult and the photons number is changed after each measurement. Recently, many efforts have been done for the nondemolition measurement methods. Haroche et al. succeed in recognizing existence or nonexistence of one photon in a quantum cavity. In this paper, we employ their experimental setup for a quantum nondemolition measurement and pump a coherent state in their quantum cavity. In this case, we could detect more photons in the quantum cavity by a measurement of a displaced Wigner function. It is also shown that the measurement of more than one photon is possible by the Haroche method by measuring just one point of displaced Wigner function. Furthermore, if the cavity field is filled by a superposition of two number states, the average number of photons within the cavity would be measurable. We show that their setup is also suitable to apply for the measurement of the squeezing parameter for the squeezed state of photons number in the quantum cavity successfully. 1. Introduction The formulation of quantum mechanics in phase space was proposed by Wigner [1]. This formulation is very useful in various fields of physics including quantum mechanics [2, 3], quantum optics [4–6], and condensate matter [7, 8]. The physical concepts are extractable from Wigner function. Wigner function may take negative value for a quantum state. The existence of negative or interference of Wigner function is a nonclassicality indicator for quantum systems [9–11]. On the other hand, Wigner function is a measurable quantity. Many authors introduced methods to measure Wigner function for trapped ions [12], photonic number states in quantum cavity [13–15], Schrodinger cat state, and coherent state [16]. Bertet et al. measure a complete Wigner function for the vacuum and a single photon state [17]. Lutterbach and Davidovich presented a method to measure the Wigner distribution function of photonic state in a quantum cavity field [18, 19]. They used an experimental ingenious setup which was made by one high Q-factor and two low Q-factor cavities. Nogues et al. (members of Haroche group) measured the Wigner distribution functions of electromagnetic fields in a cavity with the number states and at origin of phase space [20]. The Wigner distribution function at the origin of phase space is positive for and negative for . Therefore, the sign of measured Wigner distribution function, itself, gives us the number of photons in the cavity and its value is not important [20]. So, if there are more than one photon, it would not
The relation between postpartum depression with total serum cholesterol changes before and after child birth
shahnaz Golyan Tehrani,mehrnaze Geranmayeh,ozra Cheraghi,abas mehran
Hayat Journal of Faculty of Nursing & Midwifery , 2007,
Abstract: Background & Aim: Postpartum depression is a severe and pervasive sadness with labile mood that affect 8-15% women after delivery. It can negatively impress mother-infant bonding. There are a lot of factors which make women vulnerable to postpartum depression so that controlling them can prevent from the postpartum depression incidence. Several researches have shown an association between serum cholesterol reduction and depression. The aim of present study is to determine relation between postpartum depression with total serum cholesterol changes before and after child birth in Lahijanian women in years 2006-2007. Methods & Materials: This research sought a descriptive-analytical design. Samples consisted of healthy Primigravidia women (101 persons) with normal labor, normal delivery at term, married, and a medium to high socio-educational level, without history of a depressive disorder, and metabolic disorders or hyperlipidemia. The excluded were the women with maternal or fetal complication before delivery, having problem with accepting infant gender, fetal death and being depressed during pregnancy. All women were visited in two stages: 3 weeks before the expected delivery and also 6 weeks after delivery. On both visits the Beck depression inventory and serum cholesterol registration questionnaire were completed. Data were collected using a questionnaire which had three sections: demographic characteristics, the Beck depression inventory and laboratory tests. Data were analysed using descriptive and inferential statistics (Spearman correlation coefficient and t-test) by SPSS computer software. Results: Findings indicated that serum cholesterol declined considerably in the postpartum period, also it was shown that there was a significant correlation between reduced serum cholesterol and postpartum depression (r=-0.331, P<0.001). Conclusion: Serum cholesterol reduction has a relation with postpartum depression.
Gender differences in association between metabolic syndrome and carotid intima media thickness
Tabatabaei-Malazy Ozra,Fakhrzadeh Hossein,Sharifi Farshad,Mirarefin Mojde
Journal of Diabetes & Metabolic Disorders , 2012, DOI: 10.1186/2251-6581-11-13
Abstract: Background Metabolic syndrome (Mets) is a cluster of cardiovascular risk factors which can predicts cardiovascular disease (CVD). Carotid intima-media thickness (CIMT) is known as a surrogate measure of subclinical atherosclerosis and predictor of CVD. Although, it has shown the association between Mets and CIMT, this relation regarding sex differences is limited. We aimed to find out whether gender differences in this association. Methods In this cross-sectional study, we recorded height, weight, waist circumference (WC), blood pressure, and lipid profiles. We used Mets; defined based on NCEP ATP III definition, and traditional cardiovascular risk factors; age, body mass index (BMI), WC, hyperlipidemia, and hypertension, in multivariate regression models which including;. The CIMT measurement < 0.73 or ≥0.73 mm was considered as low- or high risk to CVD. Results Overall, 150 subjects were enrolled to study that their ages were 36-75 years. The 47.3% of them (71 subjects) had Mets. CIMT was increased in Mets group compared non-Mets group (P = 0.001). In logistic regression analysis, a significant association was found between Mets and CIMT in women, but not in men (p = 0.002, and p = 0.364, respectively). After adjustment to age, WC, BMI, hypertension and hyperlipidemia, this association was significant just in women (p = 0.011) independent of WC, BMI, hyperlipidemia and hypertension. Conclusion Our data showed that MetS is a stronger risk factor for subclinical atherosclerosis in women than in men. So, we suggest the assessment of CIMT along with definition Mets in middle-aged women could be lead to earlier detection of at risk individuals to CVD.
Apolipoprotein E gene polymorphism and its effect on anthropometric measures in normoglycemic subjects and type 2 diabetes
Tabatabaei-Malazy Ozra,Fakhrzadeh Hossein,Qorbani Mostafa,Amiri Parvin
Journal of Diabetes & Metabolic Disorders , 2012, DOI: 10.1186/2251-6581-11-18
Abstract: Background Apolipoprotein E (apo E) plays a major role in lipid metabolism, obesity and accordingly in development of diabetes and coronary heart disease (CHD). Our main objective was to evaluate the association between apo E gene polymorphism with anthropometric measures. Methods Participants were selected from zone 17 Tehran/Iran. We assessed height, weight, body mass index (BMI), waist circumference (WC), blood pressure, serum fasting blood sugar, total cholesterol and triglycerides. Genotyping for apo E gene polymorphism was carried out using PCR-RFLP technique. Results Among total study population (n=311), 156 subjects were diabetic. The apo E3/E3 was the most common genotype in our population while E2 and E4 alleles had lower frequencies, respectively. After adjustment for diabetes, the apo E2 and E4 alleles were significantly associated with hypercholesterolemia and WC, respectively (p= 0.009, 0.034). This association was also related to sex and age. The probability of having abdominal obesity in E4 allele carriers was increased from 0.22 to 8.12 in women and to 3.08 in age ≥ 50 years. Conclusions Apo E polymorphism had significant influences on WC and total cholesterol level in patients with type 2 diabetes. This study highlights the importance of lifestyle modifications which may be more beneficial in hypercholesterolemic women carriers of E2 and E4 alleles concomitant central obesity.
The association of carotid intima media thickness with retinol binding protein-4 and total and high molecular weight adiponectin in type 2 diabetic patients
Mansouri Masoumeh,Heshmat Ramin,Tabatabaei-Malazy Ozra,Sharifi Farshad
Journal of Diabetes & Metabolic Disorders , 2012, DOI: 10.1186/2251-6581-11-2
Abstract: Background The aim of this study was to investigate whether carotid intima media thickness (CIMT) is associated with serum level of retinol- binding protein-4 (RBP4) and total and high molecular weight (HMW) adiponectin in type 2 diabetes (T2DM) without clinical symptom of atherosclerotic disease. Method 101 type 2 diabetic patients (mean age, 53.63 ± 8.42 years) and 42 body mass index (BMI) matched control (mean age 50.1 ± 8.4) were recruited. The CIMT was assessed by using B-mode ultrasonography, while serum levels of RBP4 and total and HMW adiponectin were measured by using enzyme linked immunosorbant assay (ELISA). Linear regression analysis was performed with CIMT as dependent variable and adipokines and cardio metabolic risk factors as independent variables. Result The CIMT was higher in diabetic group compared to control group (p <0.05). The mean concentration of RBP4 and total and HMW adiponectin did not differ between two groups. Age (B = 0.44 P <0.05), blood pressure (B = 0.37 P = <0.05), waist circumference (B = 0.21 P <0.05) and TG (B = 0.1 P <0.05) were identified as independent predictors for CIMT in diabetic group, while RBP4 and adiponectin were not associated with CIMT neither in diabetic group nor in control group. Conclusion In conclusion, the present study showed that serum levels of RBP4 or total and HMW adiponectin were not potential predictors of CIMT in type 2 diabetic patients who exposed to this risk factor at least for nine years.
Effect of natural honey from Ilam and metformin for improving glycemic control in streptozotocin-induced diabetic rats
Ozra Nasrolahi,Reza Heidari,Fatima Rahmani,Farah Farokhi
Avicenna Journal of Phytomedicine , 2012,
Abstract: Objective(s): Diabetes mellitus is a public health problem and one of the five leading causes of death globally. In the present study, the effect of Metformin with natural honey was investigated on glycemia in the Streptozotocin-induced diabetic rats.Materials and Methods: Thirty Wistar male rats were randomly divided into six groups including C: non diabetic rats received distilled water, CH: non diabetic rats received honey, CD: diabetic rats administered with distilled water, DM: Metformin treated diabetic rats, DH: honey treated diabetic rats, and DMH: diabetic rats treated with a combination of Metformin and natural honey. Diabetes was induced by a single dose of Streptozotocin (65 mg/kg; i.p.). The animals were treated by oral gavage once daily for four weeks. At the end of the treatment period, the animals were sacrificed and their blood samples collected. Amount of glucose, triglyceride (TG), total cholesterol (TC), HDL cholesterol, LDL cholesterol, VLDL cholesterol, total bilirubin, and albumin were determined in serum.Results: Group CD: showed hyperglycemia (252.2±4.1 mg/dl), while level of blood glucose was significantly (p<0.01) reduced in groups DH (124.2±2.7 mg/dl), DM (108.0±3.4 mg/dl), and DMH (115.4±2.1 mg/dl). Honey in combination with Metformin significantly (p<0.01) reduced level of bilirubin but Metformin alone did not reduce bilirubin. Honey alone and in combination with Metformin also significantly reduced triglycerides, total cholesterol, LDL, VLDL and increased HDL, but Metformin did not reduced triglycerides and increased HDL. Conclusion: The results of the present study demonstrated that consuming natural honey with Metformin improves glycemic control and is more useful than consuming Metformin alone. The higher therapeutic effect of Ilam honey on lipid abnormalities than Tualang honey was also evident.
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