فهرست مطالب زهرا فیروزی

The purpose of this research was to develop and validate the pattern of time management skills for the first secondary school . The research method is purposeful, applied and developmental in terms of the type of qualitative-quantitative research. In the qualitative part, by means of content analysis, the constituent items of time management skills components were identified through the review of scientific texts. The tool used in this study was review of texts. For the validity and reliability of the qualitative part, the techniques of reliability were used, and for the quantitative part, content validity and Cronbach's alpha were used. Quantitative research data using a researcher-made questionnaire based on the findings of the qualitative section of 325 by random sampling method among teachers and school principals with academic and experimental backgrounds in the fields of psychology, counseling, educational management and curriculum were collected and analyzed by confirmatory factor analysis. Based on the results obtained in the qualitative section, the time management skills model has 54 categories and 14 components, including knowledge about their cognitive system, knowledge about time management, knowledge about time management strategies, basic knowledge about time management, Positive attitude towards time, sense of responsibility, self-confidence, resilience and perseverance, self-regulation, systems thinking, creative thinking, critical thinking, flexibility, planning, implementation, evaluation, monitoring and review and 3 organizing themes including cognitive, attitudinal, and time management skill that has been endorsed by first secondary school teachers.

Processing and treatment of agricultural residues and by-products is a good economical solution for reusing them into the product cycle specially in animal feeding. The production a huge quantity of hatchery waste (HW) in the poultry industry has raised concerns about environmental pollution. Nutrients and energy in wastes, litter of broiler and hatchery after eliminating of their pathogens, can be recycled and used in livestock diets. Therefore, the purpose of this experiment was to investigate of the effect of feeding different levels of HW as the main source of dietary protein on lamb’s performance, nutrients digestibility, rumenal fermentation and blood parameters.

Twenty-four Kermani male lambs with an average initial weight of 23±0.33 kg and six months’ age, were used in a completely randomized design. The experimental diets included control diet and diets containing 3 and 6% of HW. To estimate of feed intake, the remaining feed of lambs collected and weighed daily before the morning meal. At the end of every two weeks the lambs are weighed for calculation of daily weight gain. Nutrients digestibility measured by acid insoluble ash marker method. Rumen liquid samples taken from lambs before and 3 and 6 h after feeding for NH3-N, pH and volatile fatty acids measuring. Blood samples were collected at the end of period and 3 h post morning feeding for determination of blood biochemical factors. At the end of main period, all lambs were slaughtered following an overnight fast and skinned. Empty body were weighted and stored at 4 °C for 24 hours (for determination of cold carcass weight).

In the present study, performance and dry matter intake in lambs fed with 6% hatchery waste powder were significantly higher than the control group (P<0.05). Dry matter, organic matter and crude protein digestibility was not affected by HW. But, neutral and acid detergent fiber digestibility decreased (P<0.05) by adding of HW in lamb’s diet. Adding of HW in lambs’ diet, increased warm and cold carcass weights linearly (P<0.05). The pH, protozoa population and NH3-N concentration in the rumen were not affected by the experimental diets. The HW in diet caused to decreasing (P<0.05) and increasing acetic and propionic acids concentration in lambs, respectively. Blood cholesterol and glucose level in lambs fed HW were significantly higher than other groups (P<0.05). but other factors such as BUN and total protein were not different among the experimental diets.

The chemical composition of the HW indicates that this by-product is relatively appropriate nutritious. Because of increase in feed intake and performance and too alter in ruminal fermentation characteristics, this waste can be used as part of a concentrate in the diet of lambs.

 A growing amount of evidence has revealed that circular RNAs (circRNAs), covalently closed single-stranded non-coding RNAs (ncRNAs), play significant roles in initiation and progression of breast cancer (BC) through different mechanisms.  This study aims to investigate the hsa_circ_0003098 expression and its potential roles in BC, as well as the circRNA/miRNA/mRNA crosstalk in these contexts.

Real-time PCR (RT-PCR) was used to assess the expression of hsa_circ_0003098 in the breast tumors compared with adjacent normal tissues. Its association with different demographic and clinicopathological characteristics of BC patients was assessed by statistical analysis. Finally, we used bioinformatic approaches to uncover the potential circRNA/miRNA/mRNA axes using some databases and software.

 Our results revealed that hsa_circ_0003098 expression is significantly upregulated in BC tumors compared with the adjacent normal tissues. Moreover, hsa_circ_0003098 over-expression is significantly associated with lymph node metastasis and hair dye use. Next, we found that this circRNA can regulate key mRNAs and miRNAs in the ceRNA network.

 It is suggested that hsa_circ_0006960, which is significantly up-expressed in breast tumors and associated with lymph node metastasis, could play key roles in the physiopathology of breast cancer through sponging off the miRNAs involved in hsa_circ_0003098/miRNAs/mRNAs network.

The urban agriculture is one of the key factor to reduce air pollution in the metropolitan cities. The purpose of creating agriculture in the city is to plant and produce micro-food products with easy and minimal facilities. Accordingly, the purpose of this research was to explore the potential of urban agriculture horizontally in the 5th district of Tehran municipality. The slope, the distance to water wells, land use with incompatibility with barren lands height and shading of the building, minimum and maximum temperatures criteria and a model on the basis of area Was established to determine the type of agricultural crops using Arc GIS software. The spatial analysis of the studied criteria suggests that vacant lands with the slope of 0 to 21.9 percent and area of 168.66 hectares, the distance to water wells with a radius of 262 meters and a minimum area of 92 square meter for agriculture in the 5th district of Tehran was appropriate. Overall, the results showed that in the east and west directions of buildings, due to the level of shading, the shade-loving plant species such as lettuce, chicory, mint, spinach and leaf cabbage were planted for spring and autumn, and in the south of buildings due to lower shading levels, it is suited for the spring and summer planting of sun-loving species plants like tomatoes, corn, cucumber, eggplant, and pepper.

In previous work, one of us calculated the Solvation force of hard ellipsoid fluid with hard Gaussian overlap potential using hard needle wall interaction and non-linear equation proposed by Grimson- Rickyazen. In present work, using density functional theory and extended restricted orientation model, the solvation force of hard ellipsoid fluid in presence of more realistic rod- sphere and rod- surface interactions are calculated. We investigate weak and strong molecule-surface coupling strengths. The colloids distance effects on density profiles are calculated. We could not find the exact or simulation results for comparison. The results in the case are compared with the Solvation force of hard Gaussian overlap fluid and hard needle- wall interaction. The results are corresponded, qualitatively.

Sodium metabisulfite which is used as a food preservative in the food industry, has adverse effects on body organs such as kidney and body grouth rate. In this research we have studied the protective effect of Vitamin C and E as antioxidants, on the kidney tissue damage after the consumption of Sodium metabisulfite.
Forty-eight Adult male Wistar rats of 150-200 grams were divided into 6 groups of 8 each. Rats in the experimental groups received Sodium metabisulfite (520 mg / kg body weight) by gavage feeding for 30 consecutive days. Also during this period, the experimental groups 2 and 3 received a daily dose of 100 mg / kg vitamins C and E, Respectively. The experimental group 4 received 50 mg / kg vitamin C plus 50 mg / kg of vitamin E by the same root. Control group received only normal diet and water. The placebo received vehicle (drug solvent) as well as normal diet and water. At the end of the exprimental period the body growth rate was measured between the groups. The histhopatological examination was performed on the kidney tissue sections. by light microscope
The results showed sodium metabisulfite in daily dietary could lead to the kidney tissue damage and reduced body weight in rats (p With this study we could conclude that the antioxidant effect of that vitamins C and E have a protective effect on renal damage induced by sodium metabisulfite consumption.

This study aimed to raise the effectiveness of On-the-Job Training Program for teachers. It was done by using quasi experimental method. To measure variables pretest –posttest design with control group was used. The population consisted of On-the-Job Training courses for teachers from Lamerd town which were held in 2012. By using convenience sampeling method 3 samples were selected which were registered in the course of October 2012. The course effectiveness was evaluated by using three variables including satisfaction and attitude of the learners as well as amount of their learning. The data gathering tools were a satisfaction-attitude questionnaire and the Course-Test. The content validity was used as a validation tool. The reliability was measured by using Cronbach’s alpha and cooder Richardson method. The results show that On-the-Job Training course was effective in systemic and constructive problem-based environments, and the second one was more effective.

This research was conducted with the aim of Johnson’s constructive pattern impact in problem-based learning in-service training programs for teachers. The research method was quasi-experimental. In order to measure satisfaction and attitude variables posttest design with control group was used and to measure the learning variable pretest–posttest design with control group were used. The statistical sample consisted of two groups of teachers participated in a descriptive evaluation in-service course in the city of Lamerd. The number of participants in this group was 68. The descriptive evaluation course was designed based on David Johnson’s constructive problem based learning. Research tools included two questionnaires to measure satisfaction، attitudes and the test was used to measure academic achievement. The content validity was used as a validation method for all means in this study. The reliability amount of satisfaction and attitude questionnaires calculated by using Cronbach’s alpha coefficient and the results were 0. 96 and 0. 94، respectively. At the mean time، it was 0. 83 for a test questionnaire by using Cooder Richardson method. The obtained data were analyzed using multi-variable variance and single-variable covariance analysis. The results indicated that designing constructivist problem-based learning environment in in-service education could increase the learner’s satisfaction and more positive attitude، getting better results in academic achievement and increased the overall effectiveness of the instruction.