81 research outputs found

    The contribution of rose and rosewater tourism and festival to the destination image

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    This study seeks to explore rose and rosewater tourism and festival to understand how tourist attitudes to the festivals contribute to their image of the destination. To achieve this survey of domestic tourists was undertaken in the Kashan region of Iran. The results provide some original insights into the selection of destinations which are of value to academics, industry practitioners, tourism planners and policymakers. It confirms that events and festivals cannot develop or grow without the support of the hospitality and tourism industries. Some of the cultural limitations of undertaking the research, together with suggestions for future research are also discussed

    DEVELOPMENT OF A MICROFLUIDIC GAS GENERATOR FROM AN EFFICIENT FILM-BASED MICROFABRICATION METHOD

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    Recently, tape&film based microfabrication method has been studied for rapid prototyping of microfluidic devices due to its low cost and ease of fabrication [1]. But most of the reported film-based microfluidic devices are simple single-layer patterned 2D designs, whose potential applications are limited. In this paper, we present the design, fabrication and testing results of a 3D structured microfluidic gas generator prototype. This gas generator is used as an example to introduce our new approach of film-based fabrication method towards lab-use microfluidic research, which usually requires constant change of design and prefers low fabrication cost and short fabrication period. The prototype is a film-based comprehensive microfluidic gas generator which integrates self-circulation, self-regulation, catalytic reaction and gas/liquid separation. Time and economy efficiency are the biggest merit of this method. The only required facility during the whole process is a digital craft-cutter. The working principle of the device is illustrated in Fig.1

    DEVELOPMENT OF A MICROFLUIDIC GAS GENERATOR FROM AN EFFICIENT FILM-BASED MICROFABRICATION METHOD

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    poster abstractRecently, tape&film based microfabrication method has been studied for rapid prototyping of microfluidic devices due to its low cost and ease of fabrication [1]. But most of the reported film-based microfluidic devices are simple single-layer patterned 2-dimentional (2D) designs, whose potential applications are limited. In this paper, we present the design, fabrication and testing results of a 3-dimentional (3D) structured microfluidic gas generator prototype. This gas generator is used as an example to introduce our new approach of film-based fabrication method towards lab-use microfluidic research, which usually requires constant change of design and prefers low fabrication cost and short fabrication period. The prototype is a film-based comprehensive microfluidic gas generator which integrates self-circulation, self-regulation, catalytic reaction, and gas/liquid separation. Time and economy efficiency are the biggest merit of this method. The only required facility during the whole process is a digital craft-cutter. The working principle of the device is illustrated in Fig.1 [2]. The film-based prototype is an alternate version of the silicon-based self-circulating self-regulating gas generator developed by Meng [2]. Fig.2 shows the schematic of the filmbased prototype. It consists of 15 layers of films, tapes, glass slide, tubing connectors, and cube supporting. As shown in Fig.3, the prototype device was obtained by sequentially aligning and stacking multiple layers of patterned films and double-sided Kapton tape. The patterns were obtained by a digital craft-cutter from CAD drawings. The 3D structure was made from both the pattern and the thickness of the layer material, as shown in Fig.4. Besides, functional features can be easily added into the device. For instance, Pt-black was partially sprayed on the tape layer for catalytic reaction using a shadow mask, and nanoporous membrane was cut in the desired shape and stack-placed in position as the gas/liquid separator. The self-circulating and self-regulating functions were achieved by capillary force difference in different channels as shown in Fig.4, which can be achieved by fabricating different channel depths and treating the surface of certain channel into hydrophilic and leave others hydrophobic. The treatment for polystyrene (PS) film was achieved by spraying Lotus Leaf® hydrophilic coating or using oxygen plasma machine [3]. The fabricated device was tested with H2O2 solutions (for O2) and NH3BH3 solutions (for H2) at different concentrations (Fig.5). A pressure difference (1 psi) was applied across the gas/liquid separation membrane to provide better venting. The gas generation profiles are shown in Fig.6 and the summarized characteristics is given in Table 1. The generated gas flow rate is measured by a gas flow meter, and liquid pumping rate measured by monitoring the movement of a liquid/gas meniscus. Fig. 6 shows that higher reactant concentration causes higher gas generation rate. The fluctuation of gas generation rate is due to the pulsatile pumping of this self-pumping mechanism. It is expected that designs with multiple parallel channels can make the gas generation profile smooth due to the interactions among the channels. Detailed characterization results and discussion on reaction kinetics and pumping dynamics in the microfluidic reactor will be reported

    Spoken and Written Narrative in Persian-Speaking Students Who Received Cochlear Implant and/or Hearing Aid

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    Objectives To compare narrative skills between fourth and fifth grades of Persian-speaking students with hearing impairments and typical hearing students of the same grade and also to evaluate the effects of group, sex, hearing age, and educational grade of the students on their spoken/written narrative performance. Methods The subjects were 174 students aged 10–13 years, 54 of whom wore cochlear implants, 60 suffered from moderate to severe hearing losses and wore hearing aids, with the remaining 60 students being typical hearing in terms of the sense of hearing. The micro- and macrostructure components of spoken and written narrative were elicited from a pictorial story (The Playful Little Elephant) and then scored by raters. Results Compared to the typical hearing, the students with hearing impairments had significantly lower scores in all of the microstructure components of narratives. However, the findings showed no significant difference among different groups in macrostructure components of narratives. It was also revealed that the students had equal performance in spoken and written narrative. Finally, factor analysis manifested that group, sex, hearing age, and educational level of children might alter the outcome measures in various interactions. Conclusion Although cochlear implantation was more effective than hearing aid on spoken and written narrative skills, the Persian-speaking students with hearing impairments were seen to need additional trainings on microstructure components of spoken/written narrative

    Blood Lead Levels in Opium-Poisoned Children: One Cross-Sectional Study in Iran

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    Background: Lead poisoning is now more common due to accidental or intentional exposure to opiumimpregnated with lead. We aimed to determine the relationship between the blood lead levels (BLLs) andbasic characteristics in opium-poisoned children.Methods: In this cross-sectional study, 32 children younger than 13 years old who had been admitted toLoghman Hakim Poison Center, Tehran, Iran, due to opium poisoning, were evaluated for BLLs. Patients’demographics, symptoms, signs, and lab tests were evaluated as well as the BLLs.Findings: The median and range of age in children with opium poisoning were 14 and 141 months withminimum and maximum age of 3 and 144 months, respectively, and 62.5% were boys. Their mean BLL was9.78 ± 3.44 μg/dl and in 70% of opium-poisoned children, BLL was ≥ 5 μg/dl. There was a significantdifference between mean BLLs in girls and boys (17.07 ± 6.57 μg/dl in girls and 6.61 ± 3.22 μg/dl in boys,P = 0.02). We found a significant correlation between BLL and hemoglobin (Hb) level. In very low Hb level( 14 g/dl,BLL decreased again (P = 0.01).Conclusion: Although none of the children needed chelation therapy, strategies should be developed toprevent children from being exposed to opium and other materials impregnated with lead regarding itseffects on all organs of children

    Non-alcoholic fatty liver disease is not independent risk factor for cardiovascular disease event : a cohort study

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    There are no consistent results between previous studies for an independent association between non-alcoholic fatty liver disease (NAFLD) and cardiovascular disease (CVD) events. To determine if there is an independent association between NAFLD and CVD events. In the present study, valid outcome data of 4808 subjects were available for phase 2 of our cohort study. These subjects had been followed up for seven years from phase 1, beginning in 2009-2010 to phase 2 during 2016-2017. Simple and multiple Cox proportional models were used to determine the association between NAFLD in the primary phase of the cohort and subsequent fatal and non-fatal CVD events during follow-up. The incidence of non-fatal CVD events in males with NAFLD was significantly higher ( = 0.004) than in males without NAFLD. A positive association was demonstrated between NAFLD and non-fatal CVD events in males (Hazard ratio = 1.606; 95%CI: 1.166-2.212; = 0.004) by the simple Cox proportional hazard model, but no independent association was detected between these in the multiple Cox models. No independent association was detected between NAFLD and CVD. It is likely that diabetes mellitus and age may be the principle mediators in this regard. [Abstract copyright: ©The Author(s) 2020. Published by Baishideng Publishing Group Inc. All rights reserved.

    Fear of the unknown: a pre-departure qualitative study of Turkish international students

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    This paper presents findings from eleven in-depth interviews with Turkish undergraduate students, who were, by the time of data collection, about to spend a semester at a European university under the Erasmus exchange scheme. The students all agreed to be interviewed about their feelings about studying in a foreign culture, and were found to be anxious prior to departure about the quality of accommodation in the new destination, their language ability and the opportunity to form friendships. Fears were expressed about possible misconceptions over Turkey as a Muslim and a developing country. Suggestions are made for HEI interventions to allay student travellers’ concerns

    Non-alcoholic fatty liver disease is not independent risk factor for cardiovascular disease event: A cohort study

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    BACKGROUND There are no consistent results between previous studies for an independent association between non-alcoholic fatty liver disease (NAFLD) and cardiovascular disease (CVD) events. AIM To determine if there is an independent association between NAFLD and CVD events. METHODS In the present study, valid outcome data of 4808 subjects were available for phase 2 of our cohort study. These subjects had been followed up for seven years from phase 1, beginning in 2009-2010 to phase 2 during 2016-2017. Simple and multiple Cox proportional models were used to determine the association between NAFLD in the primary phase of the cohort and subsequent fatal and non-fatal CVD events during follow-up. RESULTS The incidence of non-fatal CVD events in males with NAFLD was significantly higher (P = 0.004) than in males without NAFLD. A positive association was demonstrated between NAFLD and non-fatal CVD events in males (Hazard ratio = 1.606; 95CI: 1.166-2.212; P = 0.004) by the simple Cox proportional hazard model, but no independent association was detected between these in the multiple Cox models. CONCLUSION No independent association was detected between NAFLD and CVD. It is likely that diabetes mellitus and age may be the principle mediators in this regard. © The Author(s) 2020

    Religiosity, materialism, consumer environmental predisposition. Some insights on vegan purchasing intentions in Italy

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    This paper explores the effects of environmental predisposition on purchasing intentions. The proposed model considers religiosity as a determinant of consumer environmental predisposition, adopting a multidimensional view entailing both intrinsic and extrinsic religiosity. Further, the effects of materialism are investigated, as it has been recognized as one of the most relevant hampering factors in determining consumer environmental predispositions and behaviors. Such factors appear intimately related, as materialism has been indicated as largely antithetical with respect to religion. Literature has suggested religiosity to be a key determinant of consumer environmental predispositions and behaviors. This might be even more important for specific, environmentally relevant consumer lifestyles. This work is hence set within vegan consumption. Veganism has been mostly related to specific religious beliefs (like Buddhism), according to which it represents a core component of larger worldviews. A structural equation model is proposed, based on a sample of 842 Italian consumers. Results show that religiosity exerts some effect on consumer environmental predisposition, and that, in turn, such predisposition determines vegan purchasing intentions. A split model is then proposed considering Christian and Buddhist consumers. Results of multigroup analysis show that religious influxes on consumer environmental predispositions might vary according to different religious faiths. Given the lack of previous empirical research, results of this study require further validation; still, they might provide some insights for managers, as markets related to environmentally relevant products and services are exhibiting a sustained growth
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