305 research outputs found

    The Study of Dormancy Breaking in Grapevine Buds by Using Chemical in Ahvaz Area

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    The effects of dormancy breaking chemical have long been specified and the utilization of these materials are common in many subtropical areas where do not provide adequate chilling requirement for buds to bloom. Although, grape as a fruit that is grown in subtropical areas does not have a high chilling requirement, its fulfillment is crucial to release bud dormancy and for its optimal growth. So, it is necessary to consider the effect of dormancy-breaking chemical on this product. In present research, the effects of dormex in three concentrations of 3%, 5% and 7% and volk oil in three concentrations of 3%, 5% and 7% as two bud dormancy breaking chemical have been evaluated in a split-plot experiment on some qualitative and quantitative properties of Sultani grape cultivar such as yield, bunch weight, number of berry per bunch, bunch length and width, length and volume of berry, 100 berries' weight, number of seeds per berry and pH, TSS, TA, TSS / TA, and vitamin C. Results which were analyzed by SAS software indicated that in bushes treated with 7% dormex and 7% volk oil, the yield and bunch weight, bunch length and width, berry weight and volume dramatically increased, and this increase is proportional to the concentration of applied substance. Generally, it is concluded that the application of dormancy-breaking chemicals has great impact on yield improvement and other quantitative and qualitative characteristics of grapevine bushes and can meet the side effects resulting from the lack of adequate chilling requirement of grapevine. The application of 7% dormex significantly increased the quantitative and qualitative characteristics of grapevine in Ahvaz

    The Study of Dormancy Breaking in Grapevine Buds by Using Chemical in Ahvaz Area

    Get PDF
    The effects of dormancy breaking chemical have long been specified and the utilization of these materials are common in many subtropical areas where do not provide adequate chilling requirement for buds to bloom. Although, grape as a fruit that is grown in subtropical areas does not have a high chilling requirement, its fulfillment is crucial to release bud dormancy and for its optimal growth. So, it is necessary to consider the effect of dormancy-breaking chemical on this product. In present research, the effects of dormex in three concentrations of 3%, 5% and 7% and volk oil in three concentrations of 3%, 5% and 7% as two bud dormancy breaking chemical have been evaluated in a split-plot experiment on some qualitative and quantitative properties of Sultani grape cultivar such as yield, bunch weight, number of berry per bunch, bunch length and width, length and volume of berry, 100 berries' weight, number of seeds per berry and pH, TSS, TA, TSS / TA, and vitamin C. Results which were analyzed by SAS software indicated that in bushes treated with 7% dormex and 7% volk oil, the yield and bunch weight, bunch length and width, berry weight and volume dramatically increased, and this increase is proportional to the concentration of applied substance. Generally, it is concluded that the application of dormancy-breaking chemicals has great impact on yield improvement and other quantitative and qualitative characteristics of grapevine bushes and can meet the side effects resulting from the lack of adequate chilling requirement of grapevine. The application of 7% dormex significantly increased the quantitative and qualitative characteristics of grapevine in Ahvaz

    Multiple Crack Detection in Thick-walled Pipes Using Artificial Bee Colony Algorithm

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    An analytical method for diagnosis of cracks in thick-walled pipes with a circular hollow section is investigated in this study. In the proposed method, the defect is assumed to be a non-leaking crack, which is modeled by a massless linear spring with infinitesimal length at the crack location. In order to find the cracks in the pipe, the vibration-based method related to the modal properties of the pipe is utilized. In the modal analysis, the mass and stiffness matrices influence the dynamic properties of the pipe. It is assumed that the mass matrix remains unchanged after the crack initiation, while the corresponding stiffness matrix changes. The stiffness matrix of a cracked element can be formulated by the finite element method with two unknown parameters: location and depth of the crack. Using the eigensolution for an undamped dynamic system to formulate the objective function yields to a complicated optimization problem, which can be solved by an iterative numerical optimization method. Among the optimization approaches, the Artificial Bee Colony (ABC) algorithm is a simple and flexible technique for minimizing the objective function. In this paper, the analytical model is utilized to find the size and position of cracks in a pipe using the ABC algorithm and subsequently some numerical examples are examined in order to assess the accuracy of the method. The results show that the proposed method is able to acceptably estimate the location and depth of multiple cracks in the straight pipes as well as curved ones

    The effects of foot reflexology on depression during menopause: A randomized controlled clinical trial

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    Objective: The purpose of this study was to determine the effects of foot reflexology on depression during menopause. Design: Randomized controlled clinical trial. Setting: Gynecology outpatient clinic. Interventions: We enrolled 90 menopausal women with depression. Participants were assigned to the intervention (n = 45) and control (n = 45) groups by block randomization. Participants in the intervention group received 15 min of foot re�exology on each foot for a total of 30 min in evenings, twice a week for six weeks. Participants in the control group received only the routine care for menopause patients. Main outcome measures: The Beck Depression questionnaire was completed by all participants at the beginning of the trial and the end of the intervention and two months after completion of the intervention. Results: A total of 121 patients were assessed for eligibility to participate in the study. One-hundred patients met the criteria to participate, and 90 participants�45 participants in each group�completed the study. In the intervention group, the mean scores of depression before, immediately after, and two months after the study were 26.97 ± 4.47 (95 CI = 25.3�28.3), 22.55 ± 5.18 (95 CI = 20.9�24.1), and 21.20 ± 5.74 (95 CI = 19.4�22.9), respectively. In the control group, these scores were 26.15 ± 5.01 (95 CI = 24.6�27.6), 26.22 ± 5.14 (95 CI = 24.7�27.7), and 26.66 ± 3.87 (95CI = 25.5�27.8), respectively. Using Repeated Measures ANOVA, the comparison of the mean scores of depression in the two groups indicated that the scores were decreased over time. Conclusion: The findings indicated that the foot reflexology technique can be effective for reducing women's depression during menopause. However, considering the study's limitations, including a small sample size and no intervention in the control group, more studies are needed to verify the findings. © 2019 Elsevier Lt

    Does brand personality affect consumer satisfaction? An application of text mining to restaurants

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    Brand personality is a fundamental marketing construct that may be leveraged for competitive advantage. Researchers and market research firms often measure brand personality in consumer surveys. This approach is expensive, unscalable, and inefficient for tracking perceptions that constantly change over time. This research thus explores an alternative to the tracking of consumers’ brand personality perceptions. Online reviews offer textual data that can be extracted for marketing research. This research captures consumers’ brand personality and brand attribute (e.g., perceived price and perceived quality) perceptions of 40 restaurants, as reflected in 4,000 online reviews, using a deep-learning algorithm. It then investigates the effect of brand personality dimensions and brand attributes on consumer satisfaction. Findings indicate a strong and independent effect of sincere, exciting, and sophisticated brand personalities on consumer satisfaction while competence and ruggedness dimensions do not influence satisfaction. In addition, this study found support for an effect of additional brand attributes (i.e., perceived price, perceived quality, interpersonal service quality, psychic cost, time/effort cost) on satisfaction, with psychic cost perceptions having the greatest impact on consumer satisfaction
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