154 research outputs found

    The effect of social capital on social participation among citizens in Behshahr, Iran

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    The aim of the present research is to study the effect of social capital on social participation of Behshahr city citizens and for this purpose 367 of the citizens of this city have been selected with the use of simple random sampling method and have responded to social capital and social participation questionnaires. The questionnaires’ format validity have been confirmed by three experts in the relevant field and their reliability have been tested with the use of Cronbach’s alpha which is equal to 0.92 and 0.87 for social capital and social participation, respectively. Finally, the collected data from the questionnaires were analyzed with the use of two-variable linear regression test and the results indicate that social capital has a significant effect (p<0.01) on social participation of Behshahr city citizens

    The effect of social capital on social participation among citizens in Behshahr, Iran

    Get PDF
    The aim of the present research is to study the effect of social capital on social participation of Behshahr city citizens and for this purpose 367 of the citizens of this city have been selected with the use of simple random sampling method and have responded to social capital and social participation questionnaires. The questionnaires’ format validity have been confirmed by three experts in the relevant field and their reliability have been tested with the use of Cronbach’s alpha which is equal to 0.92 and 0.87 for social capital and social participation, respectively. Finally, the collected data from the questionnaires were analyzed with the use of two-variable linear regression test and the results indicate that social capital has a significant effect (p<0.01) on social participation of Behshahr city citizens

    The effect of social capital on social participation among citizens in Behshahr, Iran

    Get PDF
    The aim of the present research is to study the effect of social capital on social participation of Behshahr city citizens and for this purpose 367 of the citizens of this city have been selected with the use of simple random sampling method and have responded to social capital and social participation questionnaires. The questionnaires’ format validity have been confirmed by three experts in the relevant field and their reliability have been tested with the use of Cronbach’s alpha which is equal to 0.92 and 0.87 for social capital and social participation, respectively. Finally, the collected data from the questionnaires were analyzed with the use of two-variable linear regression test and the results indicate that social capital has a significant effect (p<0.01) on social participation of Behshahr city citizens

    Distributed Adaptive Fault-Tolerant Control of Uncertain Multi-Agent Systems

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    This paper presents an adaptive fault-tolerant control (FTC) scheme for a class of nonlinear uncertain multi-agent systems. A local FTC scheme is designed for each agent using local measurements and suitable information exchanged between neighboring agents. Each local FTC scheme consists of a fault diagnosis module and a reconfigurable controller module comprised of a baseline controller and two adaptive fault-tolerant controllers activated after fault detection and after fault isolation, respectively. Under certain assumptions, the closed-loop system's stability and leader-follower consensus properties are rigorously established under different modes of the FTC system, including the time-period before possible fault detection, between fault detection and possible isolation, and after fault isolation

    Carbon dioxide captured by multi-walled carbon nanotube and activated charcoal: A comparative study

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    this study, the equilibrium adsorption of CO2 on activated charcoal (AC) and multi-walled carbon nanotube (MWCNT) were investigated. Experiments were performed at temperature range of 298-318 K and pressures up to 40 bars. The obtained results indicated that the equilibrium uptakes of CO2 by both adsorbents increased with increasing pressure and decreasing temperature. In spite of lower specific surface area, the maximum amount of CO2 uptake achieved by MWCNT at 298K and 40 bars were twice of CO2 capture by AC (15 mmol.g-1 compared to 7.93 mmol.g-1). The higher CO2 captured by MWCNT can be attributed to its higher pore volume and specific structure of MWCN T such as hollowness and light mass which had greater influence than specific surface area. The experimental data were analyzed by means of Freundlich and Langmuir adsorption isotherm models. Following a simple acidic treatment procedure increased marginally CO2 capture by MWCNT over entire range of pressure, while for AC this effect appeared at higher pressures. Small values of isosteric heat of adsorption were evaluated based on Clausius-Clapeyron equation showed the physical nature of adsorption mechanism. The high amount of CO2 capture by MWCNT renders it as a promising carrier for practical applications such as gas separation

    Sublethal effect of nanosilver on the structure of gill of Caspian roach (Rutilus rutilus caspicus) fingerlings

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    Widespread use of nanosilver can be led the contamination of aquatic environment and impact on living organisms such as fishes. We investigated histopathological changes in the gills tissue of Caspian roach fingerlings after two weeks exposure to sublethal concentrations of nanosilver. Following one and two weeks exposure, necrosis, shortening of secondary lamellae, edema, destruction of epithelial lamella, shortening of secondary lamellae, epithelial lifting and curling of secondary lamellae were observed in gill tissues. This observation showed that exposure to sub-lethal concentrations of nanosilver is caused damages in the gill tissues of Caspian roach. The results demonstrated direct correlation of gill tissue damage and toxin exposure i.e. increasing nanosilver concentration is caused more tissue damage. Hence, histopathological changes of gill can considered as a proper indicator for nanosilver contamination of aquatic environments

    Prediction of the Thromboembolic Syndrome: an Application of Artificial Neural Networks in Gene Expression Data Analysis

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    The aim of this study was to propose a method for improving the power of recognition and classification of thromboembolic syndrome based on the analysis of ‎ gene expression data using artificial neural networks. The studied method was performed on a dataset which contained data about 117 patients admitted to a hospital in Durham in 2009. Of all the studied patients, 66 patients were suffering from thromboembolic syndrome and 51 people were enrolled in the study as the control group. The gene expression level of 22277 was measured for all the samples and was entered into the model as the main variable. Due to the high number of variables, principal components analysis and auto-encoder neural network methods were used in order to reduce the dimension of data. The results showed that when using auto-encoder networks, the classification accuracy was 93.12. When using the PCA method to reduce the size of the data, the obtained accuracy was 78.26, and hence a significant difference in the accuracy of classification was observed. If auto-encoder network method is used, the sensitivity and specificity will be 92.58 and 93.68 and when PCA method is used, they will be 0.77 and 0.78 respectively. The results suggested that auto-encoder networks, compared with the PCA method, had a higher level of accuracy for the classification of thromboembolic syndrome status

    The prevalence sarcocystis infection in slaughtered animals in slaughterhouse of Shahrekord using histhopathological method 2008.

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    زمینه و هدف: سارکوسیستوزیس یک عفونت تک یاخته ای مشترک بین انسان و دام است که توسط گونه های مختلف سارکوسیستیس ایجاد می شود. این انگل شیوع جهانی داشته و در بسیاری از حیوانات آلودگی ایجاد می نماید و از نظر بهداشتی و اقتصادی ضررهای زیادی را وارد می کند. هدف از این مطالعه تعیین میزان آلودگی سارکوسیستیس در دام های کشتارشده در کشتارگاه شهرکرد با استفاده از روش هیستوپاتولوژی می باشد. روش بررسی: در این مطالعه توصیفی –آزمایشگاهی قلب 70 رأس بز و 70 رأس گوسفند سالم، اندام های مری، ران، دیافراگم و قلب دام ها به صورت ماکروسکوپی از نظر وجود کیست سارکوسیستیس بازرسی شدند. در صورت مشکوک و یا سالم نبودن این اندام ها، قلب جهت تهیه مقطع پاتولوژی در فرمالین نگهداری و پس از تهیه مقطع مورد مطالعه میکروسکوپی قرار گرفت. اطلاعات جمع آوری شده به صورت توزیع فراوانی گزارش گردید. یافته ها: از تعداد 140 دام مورد بررسی در بازرسی ماکروسکپی وجود کیست در دیافراگم 7/15 در گوسفند و 8/2 در بز، مری 1/7 در گوسفند و 4/1 در بز یافت شد. در بررسی میکروسکوپی میزان آلودگی سارکوسیستیس در قلب های به ظاهر سالم در گوسفند 80 و بز 70 نشان داده شد. نتیجه گیری: با توجه به شیوع بالای آلودگی سارکوسیستیس در جهان و ایران، همچنین گزارشات مختلف تا 100 آلودگی، بنظر می رسد مطالعات بیشتری جهت تعیین حساسیت و ویژگی این روش در مقایسه با سایر روش ها ضروری می باشد. همچنین با توجه به میزان آلودگی بدست آمده در قلب های سالم نیاز به دقت در نگهداری صحیح گوشت و پخت کامل گوشت و همچنین تغییر نگرش در نحوه نگهداری دام ها از نوع سنتی به روش صنعتی دام ها توصیه می شود

    Detection of Anti-Platelet Glycoprotein Antibodies Using MAIPA Method

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    AITP mostly occur in children accompanied by variable clinical sings including petechiae, purpura, ecchymosis and severe bleeding. This study has determined and characterized the anti-platelet glycoproteins in children with ITP. The aim of this study was to determinate anti-platelet glycoproteins (GPs) using MAIPA method. During 18 months 38 children with clinical signs of AITP were studied in Mofid children hospital. To determine anti-platelet antibodies by ELISA technique, washed O negative platelets were used as a source of platelet antigens. MAIPA method was used to detect antibodies against individual platelet membrane glycoprotein. The anti-platelet antibodies level above mean+ 3SD of control group was assumed as positive. The results indicated that the platelet count ranges was between 2×109/L and 95×109/L. 63.5 % out of 38 patients were anti-platelet antibodies positive with ELISA method. The correlation between the above patients with anti-platelet antibody positive and clinical signs was 0.4. Results for determination of antibody against platelet GPIIb/IIIa, GPIb/IX and GPIa/IIa using MAIPA method were 44%, 51% and 25% respectively. In conclusion the preference of MAIPA method is the detection of very small amount of antibody. Since MAIPA is the specific method for the detection of antibody against glycoprotein antigens, it has the advantage of differentiating immune and non-immune thrombocytopenia
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