فهرست مطالب mina rostami

The production of oilseeds, edible leaves, and secondary metabolites of dragon's head makes it an important food, forage, and medicinal plant. Choosing a proper planting date and plant nutrition can make a significant effecton crop plantsgrowth, quality and yield.The effects of planting date (16 March, 14 April, and 13 May 2019) and foliar application of zinc sulfate (zero as control, 2 and 4 g.L-1) on growth indices and seed yield of dragon's head was evaluated under a field experiment.Delayed planting date reduced the days to flowering, days to seed ripening, plant height, leaf area index (LAI), crop growth rate (CGR), relative growth rate (RGR) and grain yield, and yield components.In contrast, the use of zinc sulfate increased plant height, LAI, CGR and RGR. There was a correlation between plant height and number of branches and consequently there were more capsules per plant.The highest effect of zinc sulfate application on seed yield and yield components was observed in the first planting date and with delay in planting, the efficiency of zinc sulfate fertilizer application decreased. On the third planting date, zinc sulfate application had no significant effect on grain yield. As a result of late planting, fewer branches, fewer capsules per plant, and smaller seeds contributed to the yield reduction.It was found that early cultivation and application of zinc sulfate increased plant height, number of branches, number of capsules per plant, 1000-seed weight, and thus seed yield, by increasing the days to flowering, days to ripening, LAI, CGR, and RGR.

 Rheumatoid Arthritis (RA) is an autoimmune-driven chronic systemic inflammatory disease. It could result in miscarriage, pre-eclampsia, and preterm labor, among other unfavorable pregnancy outcomes. Thus, this study was conducted to investigate the adverse pregnancy outcomes in pregnant women with RA.

 Two cohorts of pregnant women with and without RA referred to the Ayatollah Mousavi Hospital's Gynecology and Obstetrics Clinic in Zanjan, Iran, during 2019-2020 were enrolled in a retrospective matched cohort study. Using their medical records, each participant completed a checklist of study variables. We used binary Logistic regression, chi-square test, Analysis of Variance, and independent samples t-test to analyze data using SPSS v.23.

 The study included 280 pregnant women. The mean age of the RA and control group (pregnant women without RA) was 32.4 ± 6.6 and 29.5 ± 6.7 years, respectively. The most prevalent adverse outcome was spontaneous abortion (54, 19.28%), which was significantly higher in the RA group (25% vs. 13.6%, P= 0.015). Cesarean section (24.3% vs. 10.7%, P= 0.003) and low birth weight (LBW) were both significantly higher in the RA group (15% vs. 5%, P= 0.005). RA increased the probability of spontaneous abortion, cesarean section, and LBW by more than 1.3 (odds ratio, 1.38; 95% CI, 0.45-5.46; P= 0.017), 2.2 (odds ratio, 2.24; 95% CI, 1.29-6.54; P =0.004), and 2.6 (odds ratio, 2.67; 95% CI, 1.86-7.05; P= 0.008) times, respectively.

 Pregnant women with RA are more likely to experience spontaneous abortion, cesarean section, and having LBW infants comparing to pregnant women without RA.

Psychological factors might play a role in the onset and exacerbation of cardiovascular disease. This study aimed to determine the relationship between Alexithymia and Emotional Maturity with the mediation of Attachment Styles among cardiovascular patients in Zanjan, Iran. The present study has a descriptive-correlational design. The statistical population of this study encompassed a range of 670 patients with cardiovascular diseases who were referred to the Cardiology Clinic of Ayatollah Mousavi Hospital in Zanjan from March and August 2019. The sample size was estimated to be 244 people using Cochran formula. Data collection tools included Hazen and Shaver’s standard adult attachment style questionnaire, Toronto’s ataxia, and Singh and Bhargava questionnaires. The Pearson correlation coefficient and multiple regression analyses were done using SPSS 24 software. There was a positive correlation between alexithymia with emotional instability (r=0.14, P<0.01), personality decay (r=0.36, P<0.01), and emotional maturity (r=0.38, P<0.01). The results of multiple regression analysis showed that emotional instability (P=0.009), personality decay (P=0.016), and emotional immaturity (P=0.009) significantly predicted secure style. Additionally, difficulty in describing emotions significantly predicted avoidant style (P=0.034). Emotional maturity (P=0.006) and difficulty recognizing emotions (P=0.009) also significantly predicted ambivalent style. Personality traits and emotional alexithymia can be used as indicators for predicting attachment styles and social behaviors, and specifically, lack of emotional stability, personality disintegration, and emotional alexithymia can predict secure and ambivalent styles to some extent. Also, difficulty in describing emotions and emotional immaturity have the ability to predict the avoidant style. These results can help to better understand individual behaviors and design solutions to improve behavior.

Knee osteoarthritis (OA) is one of the major causes of dysfunction that reduces patients’ quality of life. The aim of current study was to investigate the effectiveness of muscle strengthening exercises on the clinical outcomes of patients with knee OA.

We conducted a single-blind clinical trial on 96 patients with mild to moderate knee osteoarthritis. Patients were randomly assigned to 4 groups with 24 patients and followed-up for 8 weeks. Quadriceps, hamstring and both hamstring and quadriceps strengthening exercises were received by the first (G1), second (G2) and third (G3) groups, respectively. The fourth group (G4) was the control group and did not receive any intervention. The main outcome variables were pain, physical function and morning stiffness. This study was retrospectively registered at irct.ir (Iranian Registry of Clinical Trials) with the code IRCT20220206053950N2, 2022-09-07

Our findings demonstrated a significant impact of interventions on VAS score, pain, and stiffness (All, p < 0.001). Nonetheless, the effect of interventions was not significant for physical function (P = 0.78). After adjusting for the potential confounders, similar results were observed. Besides, the results of Dunnett post hoc test showed that either G1 or G3 had the most decrease in VAS and WOMAC-morning stiffness scores compared to G2 and G4.

Based on the evidence from the present study, we can recommend a combination of quadriceps and hamstring strengthening exercises as the most effective intervention to reduce pain and morning stiffness in patients with OA.

Cerebral venous sinus thrombosis (CVST) is a potentially life-threatening condition with a wide range of clinical presentations, from localized headache (the most common symptom) to mental status disturbances, seizures, and coma.

The main purpose of this study was to evaluate serum levels of ferritin, iron, and total iron binding capacity (TIBC) and their possible relationship with different parameters in CVST patients.

Thirty patients with a definitive diagnosis of CVST based on brain magnetic resonance imaging (MRI) and magnetic resonance venography (MRV) results participated in the study. During the first 24 hours after admission, 5 cc of blood sample was collected from each patient and delivered to the laboratory to measure serum ferritin, iron, and TIBC levels.

Twenty-four women and six men (mean age: 42.6 ± 16.33 years) participated in the study. The mean levels of serum iron, TIBC, and ferritin were within normal ranges (99.40 ± 29.97 mg/dL, 324.50 ± 49.57 mg/dL, and 87.36 ± 88.84 ng/mL, respectively). There were no significant relationships between serum ferritin, iron, TIBC levels, oral contraceptive pills consumption, history of CVST or cerebrovascular accident (CVA), underlying diseases, and the involved sinus.

The current study showed no possible benefits of using serum ferritin, iron, and TIBC indices in CVST patients.

Taking care of a patient with COVID-19 can have a significant psychological burden. This study aimed at determining the levels of stress, anxiety and depression symptoms among family caregivers of Covid-19 patients.  This cross-sectional study was conducted on 236 main caregivers of coronavirus patients in Zanjan, Iran in 2020. The data measurement tool was the DASS-21 electronic questionnaire which was designed using the Porsline platform and was sent to the participants via SMS and WhatsApp messages. Descriptive statistics and Pearson’s R, Student’s T test and analysis of variance were performed to analyze the data in SPSS version 25. The mean age of participants was 34.72±9.52 years. Of the participants, 57.21, 70.77 and 55.09% had symptoms of depression, anxiety and stress, respectively. Females experienced higher levels of stress than males (p=0.049). Additionally, the mean score of depression sub-scale was significantly different between categories of employment status (p=0.029), as self-employed workers had significantly higher depression sub-scale scores (10.97±10.85) compared to the other two groups. No significant associations were found between age and depression, anxiety, and stress of the participants. Moreover, the mean scores of depressions, anxiety, and stress sub-scales were not significantly different between categories of marital status and levels of education. The majority of family caregivers experienced depression, anxiety, and stress symptoms. This significant prevalence of psychological burden among these individuals underscores the need for supportive measures by policy makers and communities to prevent further severe consequences and help them reduce these symptoms.

 Many child labors have impaired self-esteem, which leads to poor academic performance. Therefore, the aim of this study was to determine the effect of self-esteem promotion program on academic performance in child labors.

In this quasi-experimental study, 60 child labors chidren were selected in two centers for support of cgild labor in Bazar and Khavaran, In the intervention group, enhancing self-esteem (ESE) program were presented at 18 training session. In the control group, only the routine trainings of the centers were given. Data collection tools were Cooper-Smith Self-Esteem Questionnaire and Academic Performance Questionnaire, which were completed before the intervention, immediately, one month after the intervention and three months after the intervention (six months in total) by groups.

Most of the children in the intervention and control groups were 13 years old, boys, and have vendor job. No significant difference was observed between the two groups in self-esteem and academic performance scores before the intervention (p > 0.05). The self-esteem and academic performance scores of children in the intervention group was better than the score of children in the control group over time within 6 months of the study (p <0.001).

The results of this study showed that the enhancing self-esteem program improves the self-esteem of child labor. In addition, the enhancing self-esteem program promotes children's academic performance.

 Growth is an important marker of child health. It has been shown recently that a chronic inflammatory condition, known as Environmental Enteric Dysfunction might play a more significant role on growth velocity than clinical infections. The present study aims to investigate the fecal myeloperoxidase concentration (a marker of gut inflammation) and its relationship with growth velocity.

 In this prospective cohort study, 74 children from rural population of Iran (2 to 5 years of age) were randomly included. The heights and weights of the children were measured at a quarterly interval. The stool samples were obtained from all children in order to measure myeloperoxidase (MPO) concentration. The growth velocity was assessed on the basis of height for age Z-score and weight for age Z-score changes. A questionnaire on socioeconomic status was also completed by children’s parents.

 82 children aged 2 to 5 years (37 females and 45 males) with mean age of 40.63 ± 12.7 months participated in this study. The mean fecal MPO level was 71.26 ng/ml (Min – Max: 2 – 232.33 ng/ml). There was no significant relationship between fecal myeloperoxidase level and changes in height and weight Z scores. Moreover, there was no significant relationship between socioeconomic status of households and fecal myeloperoxidase level.

 The mean level of fecal MPO in the present study was lower than similar studies. This significant difference might be mainly due to the better social status of families and environmental conditions of villages in our study.

 Nitrates in drinking water which may come from nitrogen fertilizers applied to crops are a potential health risk. The present study was conducted to investigate the application of alternating current (AC) in electrocoagulation (EC) process for nitrate removal from aqueous solution and linear and nonlinear isotherm modeling.

 The experiments were performed in pilot scale. The effective parameters including solution pH, the initial concentration of nitrate, total dissolved solids, contact time, and current density were studied. 

 The obtained results showed that with increasing solution pH from 3 to 10, the sinusoidal removal efficiency was observed. With increasing current density from 0.5 to 2 A/cm2, the nitrate removal efficiency was ascended from 32% to 58%. The optimum electrolyte was 2 g/L of NaCl. With increasing contact time and decreasing initial nitrate concentration, the nitrate removal efficiency was enhanced. In addition, the adsorption NO3by AC EC was preferably fitted with Langmuir isotherm. 

 The results showed that the EC process could remove the nitrate to less than Iranian standard limit. The solution pH, current density, and contact time were showed the direct effect and initial concentration of nitrate depicted the reverse effect on nitrate removal efficiency

Lead (Pb) is considered as one of the most destructive environmental pollutants causing extremely undesirable impacts on tissues of living organisms. In this trial, physiological and morphological changes in fish liver and gill tissues after Pb exposure for different terms and at various concentrations were investigated. To do so, samples were placed in aquaria containing 0.1, 0.2 and 0.4mg l-1 of Pb at different exposure times (46, 96, 144, and 168hrs). Afterwards fish were removed from the experimental tanks and their gill and liver tissues were sampled in order to determine any histopathological effects. The resulting stained slides were checked using a binocular microscope with a magnification of 10x and 40x. Histopathological changes in liver included sinusoidal extension, vacuolization, hyperemia and hemorrhage, nuclei picnosiation, hepatocyte necrosis, hemocydrine accumulation of melano macrophage cells. Cell acidofication, lymphocyte invasion and focal necrosis were also observed. Gill tissues were damaged by hyperemia, filament and secondary lamellae, mucosal accumulation, telansicatzy, dysplasia pavement cells metaplasia into mucosal cells and gill mucosa, and distal hyperplasia of secondary lamellae. Damages were intensified by an increase in the concentration of the contamination since minor histopathology occurred at 0.1mg l-1 of Pb while levels of 0.1, 0.2 and 0.4mg l-1 of Pb showed major histopathological effects as exposure time increased.