nouroozi

The aim of this study was to investigate the effectiveness of the implementation of mindfulness training on depression, anxiety, and stress in high school students in Ahvaz in the academic year of 2017-2018.

This is a quasi-experimental study with pre-test post-test design with control group. The statistical population included all of high school female students in the academic year of 2017-2018. The sample size consisted of 40 students, who were selected by multi-stage cluster sampling and randomly divided into experimental (n=20) and control (n=20) groups. For the experimental group, 8 sessions (each session 90 minutes) of the mindfulness program were performed, but no experimental test was performed for the control group and the Depression Anxiety Stress Scales (DASS) was used for collecting data. To test the hypotheses, covariance analysis and multivariate analysis of variance was performed, using SPSS 21 software. In addition, Levin test was used to test the equivalency of variances. After completion of educational programs, post-test was performed on both groups.

The results of data analysis indicated that the effect of mindfulness training on decreasing depression, anxiety, and stress has been shown and there was a significant relationship between mindfulness education and anxiety reduction, depression, and stress (p<0.01).

Based on the results of this study, it is worthwhile for educators to teach students how to train their mind-learning skills to be able to manage their self-control coping processes and reduce the amount of anxiety disorder in psychological conditions.

The effect of microstructural refinement and intercritical annealing on the mechanical properties and work-hardening response of a low carbon St12 steel was studied. It was revealed that intercritical annealing of the ferritic-pearlitic sheet results in the formation of a coarse-grained DP microstructure with discrete martensite islands normally formed in place of pearlitic colonies, which results in the minor enhancement of mechanical properties with disappearance of the yield-point elongation. On the other hand, a fine-grained DP steel with chain-network martensite morphology can be obtained by intercritical annealing of the cold rolled martensitic microstructure, which shows superior work hardening rate, low yield ratio, and high tensile strength. In this way, it is possible to enhance the mechanical properties of St12 steel toward those of DP300/600 steel. Compared with the conventional DP350/600 grade, a significant enhancement in the work-hardening behavior can be achieved with acceptable strength-ductility balance compared with the usual trend seen in steels. As a result, it was concluded that cold rolling of the initial martensitic microstructure before intercritical annealing is a viable approach for processing DP steels with enhanced mechanical properties for industrial applications.

Owing to their superior catalytic activity in the extreme conditions, extremozymes have found the potential biotechnological applications for industrial purposes. A robust extracellular protease activity was detected in the culture broth of Salicola marasensis, an extreme halophilic bacterium, after a 48 h-incubation. The effect of different media ingredients in a liquid state fermentation was followed with the aim of improving the enzyme production yield. Fractional factorial and Box-Behnken designs were applied to get a 3.4 fold (from 6.0 to 20.3 U mL−1) improvement of protease production. The distinguishing features of this enzyme were stability at a wide range of pH (5.0–11.0) and temperature (25–60 °C), significant compatibility towards organic solvents, metal ions, chemicals, and surfactants, and hydrolysis of a variety of substrates. The properties of this enzyme can be of tremendous help in terms of the halophilic proteolytic extract’s industrial applications.

Computation of the Schrodinger equation energy levels is very important in physics. For example we can use these levels to calculate the absorption coefficient and light refraction in a material as well as calculation of the interband and intersubband transition energies. Density of states of the system can also be obtained by using the energy levels. Thereafter we can determine that the system is dielectric, semiconductor or metal. There are different methods to calculate the energy levels and each of them has some advantages and some disadvantages. The asymptotic iteration method, genetic algorithm, numerov method, neural networks, transfer matrix etc. are some of them. However calculation of the energy levels by using the Sinc method has less been studied.
In this paper we consider the Sinc collocation method to calculate these energy levels. We approximate the unknown function by Sinc functions and convert the problem to the eigenvalue problem by collocation method. In sequel numerical examples are included to compare the accurately of our method with finite difference method. The results demonstrate the accuracy of our method to comparison the other methods. All computations were carried out using Maple on a personal.

In order to determine appropriate planting spaces¡ and nitrogen fertilizer levels on rice promising line 8608¡ a field experiment was carried out at the Rice Research Institute of Iran– Deputy of Mazandaran (Amol) during 2008 and 2009. The experiment was laid out as factorial based on a Randomized Complete Block Design with 3 replications. There were three levels for planting spaces (16×30¡ 20 20 and 25×25 cm) and nitrogen fertilizer had four levels(0¡ 92¡ 115 and 138 kg N ha-1¡ respectively). Some agronomical traits such as length of panicle¡ number of filled and unfilled grains¡ totalnumber of grains per panicle¡ 1000 grains weight and economic yield were measured.Results showed that Planting spaces and nitrogen levels had significant effects on grain yield and the highest grain yield was obtained from the Planting spaces of20×20 cm and application of 115 kg N ha-1.

Today, development is a process in which the initial conditions of backwardness and underdevelopment of communities through developmental stages, the developed countries will become more or less the same. One of the pillars of development, comprehensiveness and integration in the areas of economic and social imbalances are resolved. Necessary to optimize space allocation of resources and production facilities require that any approach to the development of large programs, regional potentials and capabilities in the production of goods and services should be considered. The share of national production sectors and commodities increases. At present, the urban areas of the country having 71% of the total population of the main centers of economic growth, social and political developments of the country and the most attractive locations for the accumulation of capital, labor, creativity and innovation are considered. The present study aims to investigate the development of Kurdistan province in physical dimensions, infrastructural, cultural and economic development of these areas will have a level of analysis.

In the present study selected indicator from previous studies (non-placental markers AM2), on DNA of single plants of modification mass obtained by cross breeding wild species Beta maritima (having resistance gene Rz2) with sugar beet were called to F2BC1 mass were investigate. To do this first about 1160 seeds of target mass were planted and after one month plants preparation, about 100 Seedling applied to evaluate the phenotypic resistance to the rhizomania contaminated soil was moved to the greenhouse and two months were maintained in this soil. During this period, DNA of plant leaf samples was extracted. Then the quality and quantity of extracted DNA spectrophotometrically was determined. Next, AM2 markers related- primer on single plant DNA with PCR-RAPD method was used to amplify fragments of DNA template. After electrophoresis, RAPD-PCR reaction products in one percent agarose gel and staining gel and observation of the band pattern, presence or absence of markers in a single plant was marked. Then the resistance level of plants cultivated in soil contaminated by the virus concentration in plant roots with Elisa serological tests in the laboratory was determined. Thus the resistant and susceptible plants were identified. The relationship and degree of correlation and agreement between markers (based on molecular data) and resistance (based on ELISA data) in desired single plants was found. By comparing the mean and variance analysis for non-balanced completely randomized design, it was found that the average values of absorbed ELISA of dominant heterozygous and homozygous genotypes has no significant difference. Also comparison of the results for the existence percentage of markers traits as a balanced completely randomized design with four genotypes, including mass F2BC1 (having resistance gene Rz2), Regina (Rhizomania susceptible control varieties), Paulleta (Rhizomania resistant control varieties) and breeding mass S1 (with Resistance gene Rz1) showed that there is no significant differences between genotypes and reproducibility of non-placental markers AM2 in different genotypes was confirmed.

Background and ObjectivesCardiovascular disease (CVD) is a common cause of morbidity and mortality. The relationship between ABO blood groups and main risk factors of CVD is unknown. So this study was designed to investigate whether there is an association between ABO blood groups and cardiovascular risk factors in healthy population.Materials and MethodsIn this cross-sectional study, risk factors screening for CVD on 2920 healthy individuals of Golestan province in 2005 were estimated by a questionnaire that aimed to extract information about age, sex, physical activity, smoking, blood group type, weight, height, blood pressure and family history of CVD. Data were analyzed with SPSS13 and by using Chi Square and ANOVA tests.ResultsOut of the total number of 2920, 57.4% were male, 70% inactive, 14% smoker, 25% hypertensive, 23% obese, and 21% had family history of CVD with the mean age of 41.52 ± 12.317. Blood groups O (32.9%), A (30.1%), B (23.3%) and AB (13.7%) were the most frequent ones, respectively. Amongst cardiac risk factors, it was only the frequency of family history of CVD that varies across different blood groups, and individuals with A blood group reported to have a more frequent family history of CVD as compared with other blood groups. ConclusionsThese findings illustrate amongst cardiovascular risk factors only family history of CVD as having a significant correlation with ABO.

In this paper, numerical simulation of cavitating flow over hydrofoils is presented by the aid of Preconditioned Artificial compressibility Method for solving the multi-phase N-S equations. Dominant equations include conservation of mass, momentum and a liquid phase volume fraction transfer equation. Equation of volume fraction transfer is obtained on the basis of homogeneous equilibrium flow concept in modeling of multi-phase flows. Mass transfer between phases is simulated by the Merkle model. To accelerate the convergence rate, the discrete equations are preconditioned. Third order Roe-based flux difference splitting and second order central differencing method respectively is utilized for convection and viscous term discretization. Effects of turbulence are simulated in terms of an eddy viscosity coefficient added to molecular coefficient of viscosity via Spalart-Allmaras model. To demonstrate the capabilities of the scheme, several single and two-phase test case problems are computed and the results are compared with experimental and numerical data. Computed results present the appropriate accuracy of algorithm. Results of single phase flow over NACA0012 hydrofoil at renolds number, 2.8e6 & 0, 6 angle of attack, are compared with experimental data. The capability of code for simulation of cavitating flows at various cavitation numbers and angle of attacks are presented via simulation of two phase flow over non-truncated & truncated modified NACA0009 hydrofoil at renolds number, 2.0 e6 & 0, 2.5 angle of attack & σ = 1.0, 0.9, 0.8, 0.75, 0.6, 0.5, 0.4, 0.3. Then results are compared with experimental and numerical data. The results are in good agreement with the available data and other published computations.

The main subject of this article is the simulation of the cavitation including partial and super cavitation over the axisymmetric bodies using a boundary element method (BEM) based on potential by re-entrant jet model in closure zone of cavity. Re-entrant jet model is one of the closure models of cavity which is in agreement with physics of unsteady cavitating flows. To simulate the cavitation region, cavity and body surfaces are modeled with plane panels. Then, by applying the integral expression of Green theory, cavitation can be modeled by distributing the source rings on cavity surfaces and dipole rings on cavity/body surfaces. The length of the cavity and re-entrant jet are assumed to be fixed as initial predictions. The cavitation number and shape of cavity are the main results of this simulation. Furthermore, the pressure coefficient in partial cavitation and drag coefficient in super cavitation are predicted. The comparison between these results with experimental and analytical ones show that simulation of partial cavitation using BEM with re-entrant jet model modified the overshoot -that exists in results of BEM simulation without using re-entrant jet model- at the end of the cavity pressure coefficient. The implemented BEM method with re-entrant jet in super cavitation led to very good results in prediction of cavity shape and drag coefficient. The main advantage of this method is shortening the time of the desirable convergence.

Rhipicephalus sanguineus and Hyalomma marginatum are the most common spe­cies in sheep herds in Northeast of Iran. There is preliminary evidence that these species may be the vectors of Babesia ovis in Iran. We carried out two experiments in Mashhad area, Khorasan Razavi Province to determine whether B. ovis could be transovarially transmitted by R. san­guineus and H. marginatum. In experiment 1, adults of laboratory reared H. marginatum and R.sanguineus were infected with B. ovis isolated from naturally infected sheep in Mashhad area by feeding the ticks on the sheep inoculated intravenously by infected blood samples. The inoculated sheep showed clinical signs with parasitaemia while the adult ticks were engorging on them. The engorged fe­males were collected and kept at 28°C and 85% relative humidity in incubator. Then, larval, nym­phal and adult stages derived from engorged females were used to infest the clean sheep. In experiment 2, two splenectomized sheep were infested only with the same adult ticks of two spe­cies. Examination of smears and PCR of blood samples to detect of B. ovis in infested sheep in two experiments were negative. It seems that R. sanguineus and H. marginatum can not transovarially transmit B. ovis in sheep.