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Showing 4 results for Khorramdel
The Relationship between Interpersonal Psychological Theory of Suicide Constructs (Loneliness, Perceived Social Support, Thwarted Belongingness and Burdensomeness) and Suicidal Behavior among Iranian Students

Volume 4, Issue 2 (4-2016)
Abstract
Aim: This research has tried to study the relationship of loneliness, perceived social support, thwarted belongingness and burdensomeness with suicide among Iranian university students.
Methods: The participants of the study included a pool of 315 Iranian university students who were randomly chosen from the students studying in 2015-2016. The study design was correlational and cross-sectional. Data were collected through using four instruments: Interpersonal Needs Questionnaire (INQ), Suicidal Behavior Questionnaire-Revised (SBQ-R), Revised UCLA Loneliness Scale (UCLA), and Perceived Social Support Questionnaire (PSSQ). In order to analyze the data, Pearson's correlation and step-wise regression were conducted.
Findings: The findings revealed that while the males scored higher in both factors of thwarted belongingness and burdensomeness, the females possessed greater amount of loneliness and higher rate of perceived social support as compared to their male counterparts. Moreover, although no significant difference was found between marital status and suicide, single people showed more burdensomeness whereas married people felt higher amount of loneliness as well as higher perceived social support.
Conclusion: Finally, based on the results, we can conclude that interpersonal psychological theory of suicide is moderately helpful in predicting and explaining suicidal behaviors in students.
Relationship between the Obsessive-Compulsive Disorder Dimensions, Severity and Insight in Adolescents: An Iranian Sample

Volume 7, Issue 4 (Fall 2019)
Abstract
Aims: The goal of the present study was to assess the relationship between obsessive-compulsive disorder dimensions and severity with insight into an adolescent’s population.
Materials & Methods: This study was done in Iran. The study sample included 84 adolescents with OCD according to DSM-5. The participants completed materials of Obsessive Compulsive Inventory-Child Version (OCI-CV), Children Depression Questionnaire (CDQ), Children’s Yale-Brown Obsessive Compulsive Scale-Severity Rating (CY-BOCS-SR), and Child Assessment of Belief Scale (CABS). Data were analyzed through descriptive statistics’ indices, Pearson correlation, separation coefficient, and multi-variant regression, using SPSS.
Findings: There was a strong positive relationship between the hoarding dimension and delusional insight. Also, severity, ordering, and doubting/checking were significantly correlated with insight, while this result disappeared by controlling the hoarding dimension via partial correlation. Moreover, adolescents with more symptoms of hoarding demonstrated a significantly higher score in OCI-CV, severity and delusional insight but not in the depression inventory.
Conclusion: Findings of the present study consistent with prior findings suggest a non-significant relationship between OCD clinical dimensions and insight in adolescents.

Effect of Biochar Amendment and Irrigation Treatments on Biochemical Attributes and Morphological Criteria of Basil (Ocimum basilicum L.) Using Central Composite Design

Volume 25, Issue 3 (5-2023)
Abstract
Three different levels of biochar addition in soil (0, 1, 2 kg m-2) and simultaneous irrigation treatments (50, 85, and 120% of crop Evapotranspiration (ETc)) were applied to basil (Ocimum basilicum L.) for two consecutive years (2018 and 2019). Central Composite Design (CCD) was used as an experimental optimization method, and 13 given experiments were carried out. The study was performed at the research farm of the Ferdowsi University of Mashhad, Iran. The effects of these treatments were evaluated on biochemical attributes (total chlorophyll, total phenol, and total soluble carbohydrates) and morphological criteria (biological yield, height, seed yield, and harvest index). Then, all the results were statistically analyzed. The results revealed that biochar amendment in the soil decreased all examined biochemical characteristics. Meanwhile, biochar in the soil strengthened the morphological properties of the basil plant. Also, the basil plant significantly responded to the amount of irrigation levels. High levels of water treatments reduced total phenol and total soluble carbohydrates and raised all other measured factors. Statistical analysis shows no significant relationship between 2-way-interaction (biochar×irrigation) and measured factors, except total soluble carbohydrates.
Agroecological Intensification of Potato (Solanum tuberosum L.) Cultivation for Sustainable and Increased Productivity in Torbat-e Heydariyeh Region, Iran

Volume 26, Issue 4 (7-2024)
Abstract
The first step to achieving ecological sustainability and intensification in agricultural systems is to have a comprehensive agroecological analysis of agricultural systems. This research analyzed the agroecological ecosystem of potato cultivation in the Torbat-e Heydariyeh Region of Iran over fifteen years (2001-2016). Based on the results, potato yield increased by 0.28 t ha-1 yr-1. The average potential yield of potato was calculated by the FAO method to be 64 t.ha-1. Also, the potential yield did not increase significantly during the study period. The average yield gap of potato was calculated to be 32.44 t ha-1. Also, with increasing yield, the yield gap showed a decreasing trend. The ecosystems experienced a steady rise in intensification, and the stability decreased. It was observed that although nitrogen fertilizer application was increased, its efficiency dropped from 110 kg tuber per kg of nitrogen fertilizer to 70 kg. Due to the decreasing trend of NUpE (Nitrogen uptake efficiency) and NUE (Nitrogen use efficiency) during the studied years, the NUE gap was the main factor in increasing nitrogen consumption, increasing intensification, and reducing stability in the studied systems. Therefore, changing the management method to increase the efficiency of nitrogen consumption can be suggested as the first step for moving towards ecological intensification and improving the sustainability of potato production systems.
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