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Author(s): 

HUANG T.M. | GU Z.Q. | Feng c.j.

Issue Info: 
  • Year: 

    2017
  • Volume: 

    10
  • Issue: 

    2
  • Pages: 

    625-637
Measures: 
  • Citations: 

    0
  • Views: 

    196
  • Downloads: 

    134
Abstract: 

High-speed passenger car requires a lighter weight for improving power performance and reducing fuel consumption; a car with higher-speed and lighter weight will lead to the passenger car more sensitive to the crosswind, which will affect the stability and drivability of the passenger car. This study employs the fully-coupled method to investigate a passenger car subjected “ 1-cos” crosswind with consideration of the vehicle motion. Large eddy simulation (LES) and dynamic mesh is adopted to investigate the unsteady aerodynamic, and the vehicle is treated as a three-freedom-system and driver’ s control is considered to investigate the vehicle dynamic. The One-Way simulation and quasi-steady simulation are also conducted to compare with the fully-coupled simulation. The results of the three simulation methods show large difference. The peak value of the lateral displacement in fully-coupled simulation is the smallest between the three simulation approaches. While the change of aerodynamic loads and vehicle motion in fully-coupled simulation is more complicated than in One-Way and quasi-steady simulation. These results clearly indicate the significance of including of the unsteady aerodynamic loads in passenger car moving analysis.

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Issue Info: 
  • Year: 

    2008
  • Volume: 

    20
  • Issue: 

    4
  • Pages: 

    447-457
Measures: 
  • Citations: 

    0
  • Views: 

    1087
  • Downloads: 

    0
Abstract: 

A multivariate statistical analysis was performed on morphological characters of tour populations of Aphanius vladykovi. Factor Analysis revealed that interlocality morphological variations are due to some morphometrical characters such as total length, predorsal length, preventral length, preanal length, head length, head width and head depth. By using oneway ANOVA Analysis of the 72 meristic and morphometric characters examined for males and females , 55 were significantly different (p>0.05) between all populations samples. In this study, three localities for Aphanius vladykovi were found for the first time.

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Author(s): 

ABKENAR A.M.

Issue Info: 
  • Year: 

    2007
  • Volume: 

    15
  • Issue: 

    4
  • Pages: 

    135-140
Measures: 
  • Citations: 

    0
  • Views: 

    3559
  • Downloads: 

    0
Abstract: 

Culture of Gracilaria was carried out in two 0.25 ha earthen ponds from October 2000 to September2001. Data were acquired for 4 seasons. Culture system was fixed bottom line method. We could culture 500 grams of Gracilaria on each line in about 9 weeks. The seaweed reached a maximum growth in 6 to 7 weeks with its biomass being 2.3 times of the initialbiomass in Autumn, 2.6 times in Winter, 2.7 times in Spring and 2.4 times in Summer. Oneway ANOVA showed that average weight was not similar in various seasons. The avearagedaily growth rate in different seasons was between 4.3 to 34.3 grams.

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Author(s): 

RAHIMY R.

Journal: 

Translation Studies

Issue Info: 
  • Year: 

    2005
  • Volume: 

    3
  • Issue: 

    9
  • Pages: 

    61-74
Measures: 
  • Citations: 

    0
  • Views: 

    703
  • Downloads: 

    0
Abstract: 

This study investigate stranslation testing as one of the most controversial issues in language studies. The question this study tries to answer is whether there is a relationship between test forms and translation trainees" better performance on a specinc form. To answer this question, 45 senior students of translation training programme from the Islamic Azad University of Tonekabon were selected and participated in the experiment They were randomly assigned to three groups and were tested on different forms of translation tests (with the same content). The data of the study was analysed through the oneway ANOVA, and the relationship between the variables of the study was proved, rejecting the null hypothesis of the study.

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Author(s): 

Pasandideh N. | SABZEH B.

Issue Info: 
  • Year: 

    2022
  • Volume: 

    17
  • Issue: 

    65
  • Pages: 

    159-178
Measures: 
  • Citations: 

    0
  • Views: 

    199
  • Downloads: 

    0
Abstract: 

Preschool education can have a significant impact on various aspects of children's development and personality, especially in their psychological and personal and social life. The aim of this study was to investigate the effects of preschool education on self-esteem of first grade elementary students by postevent method on 100 preschool students who did not attend the first grade of Save, Iran. The research instrument was the standard self-esteem questionnaire of Pope et al. (1989) and the research data were analyzed using descriptive and inferential tests (independent t-test, oneway analysis of variance and ANOVA). Preschool children were higher than those who did not, and no significant difference was found between family self-esteem and self-esteem among male and female students.

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Issue Info: 
  • Year: 

    2010
  • Volume: 

    7
  • Issue: 

    1 (23)
  • Pages: 

    9-17
Measures: 
  • Citations: 

    0
  • Views: 

    1042
  • Downloads: 

    0
Abstract: 

Background and Aim: For successful endodontic treatment Sealer is needed , and gutta-percha alone, cannot prepare hermetic seal . One of important clinical and physical characterization of sealer is setting time. This study was conducted to evaluate setting time of AH 26 , 2_Seal, Dorifill, ADSeal Meta and SDS. Materials and Methods: In this in vitro Randomized blind experimental study, sealers were AH 26, 2 Seal , Dorifill , ADSeal Meta and SDS (Iranian ZOE sealer ). Methods and material was according to ISO_6876:2001 2nd ed, "Dental Root canal Sealing Materials". 25 Samples were investigated, 5 for each group. OneWay ANOVA analysis was used by statistical specialist to show the results ( P<0.05).Results: Setting time in minutes were: AH26 = 814.2, Dorifill=93.8, 2Seal=738.4, ADSeal Meta =49.8, SDS =270.6.Conclusion:  Although, all of sealers investigated here have a proper unique specification, but in conclusion and with all investigations until now, sealers with epoxy resin base, with their variety of setting time, are better  sealers and can be used for different techniques, different peoples and different treatment, that needs sealers with short or long setting time.

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Issue Info: 
  • Year: 

    2022
  • Volume: 

    12
  • Issue: 

    16
  • Pages: 

    0-0
Measures: 
  • Citations: 

    0
  • Views: 

    54
  • Downloads: 

    0
Abstract: 

The purpose of this study was to compare the defense mechanisms, attitude towards sex and sexual satisfaction of professional, amateur and non-athlete women. The research method is causal-comparative. The statistical population of the study included all professional, amateur and non-athlete women in Tehran, among whom 125were selected as available sample. Questionnaires of Anders, Sink and Bond (1), Hudson's Sexual Satisfaction (1981), Farajnia et al. (2014) Sexual Knowledge and Attitude Questionnaires were used for data collection. Descriptive statistics (median and standard deviation) and inferential statistics (one way and oneway ANOVA) were used for analysis. The results indicated that there was no significant difference between professional, amateur and non-athlete women in terms of the scores of underdeveloped, mature and psychotic defense mechanisms. Also, there was no significant difference between sexual satisfaction and attitude towards sex of professional, amateur and non-athlete women.

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Author(s): 

HOBENAGHI R. | TIRAIHI T.

Issue Info: 
  • Year: 

    2005
  • Volume: 

    60
  • Issue: 

    1
  • Pages: 

    65-69
Measures: 
  • Citations: 

    0
  • Views: 

    1165
  • Downloads: 

    0
Abstract: 

Objective: Study on antiapoptotic effect of Deprenyl in sensory neurons of dorsal root ganglion of rat.Animals: White Sprague-Dawley rats. The regions of operation were sciatic nerve in midthigh and L dorsal root 5 ganglion.Procedure: New born rats (3rd days) were divided into five groups and their left side sciatic nerves were transected at midthigh region. Five test groups were administered by deprenyl in different doses of: 0.1, 1, 10, 25 and 50 mg/Kg and the antiapoptotic effect of drug were compared with control group.Statistical analysis: The values obtained from each test groups were compared with control group by t-test and oneway ANOVA.Results: The results showed that treatment of animal with deprenyl prevented reduction in neurons number, in dose dependent manner. The group treated with dose 25mg/Kg showed the better results. Conclusion: Deprenyl is able to prevent the induction of apoptosis in axotomized and nonaxotomized neurons.

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Issue Info: 
  • Year: 

    2024
  • Volume: 

    21
  • Issue: 

    2
  • Pages: 

    116-124
Measures: 
  • Citations: 

    0
  • Views: 

    53
  • Downloads: 

    19
Abstract: 

Background and Aim: This research examines the effect of two antioxidants, pomegranate peel extract, and green tea, on the shear bond strength of microhybrid composite on bleached enamel using sixth-generation bonding. Materials and Methods: 44 premolar teeth were used in this study. The samples were divided into 4 groups, Group A: composite restoration without previous bleaching treatment. Group B: Restoration of teeth immediately after bleaching treatment. Group C: Bleaching treatment, then using 5% green tea extract as an antioxidant on the tooth surface, followed by tooth restoration. Group D: Bleaching treatment, then using 5% pomegranate peel extract as an antioxidant on the tooth surface, followed by tooth restoration. For the restoration, the 6th generation Bond SE (Kuraray Dental, Japan) and micro-hybrid composite (3M ESPE, USA) Filtek Z250 were used. To measure the strength of the shear band, the Zwick universal testing machine (Berlin, Germany) was used, and at the end, the types of failure were examined using a stereomicroscope. Calculations were done using PASS II and SPSS 25 software, OneWay ANOVA, Tukey, and homogeneity of variance tests. Results: No significant difference was observed between groups A, C, and D (P>0. 99), but between these groups and group B, the amount of shear band strength was significantly different (P<0. 001). Conclusion: The use of 5% pomegranate peel extract and green tea increases the shear bond strength of composite to bleached teeth.

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Issue Info: 
  • Year: 

    2021
  • Volume: 

    3
  • Issue: 

    2
  • Pages: 

    107-116
Measures: 
  • Citations: 

    0
  • Views: 

    40
  • Downloads: 

    0
Abstract: 

China has launched the Silk Road Rehabilitation Project, a "oneway belt project, " as a comprehensive regional project. The main goal of this project is to enhance the level of development of the countries between the eastern and western borders of Eurasia by facilitating regional cooperation and developing the infrastructure of the transit countries. The project has two routes: the Silk Road Economic Belt and the 21 st Century Maritime Silk Road. The One-Way belt project has various geopolitical, economic, political and commercial dimensions. Areas of non-economic cooperation within the framework of this project include: ensuring the security of trade routes, strengthening counterterrorism cooperation at the regional level, designing mechanisms for resolving disputes over land and sea disputes, developing marine resources, and cooperating in the field of environmental protection and increasing in cultural exchanges. This study using the descriptive-analytic method explains the geopolitical position of Chabahar port in China’, s Maritime Silk Road in the 21 st Century.

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