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This study evaluates the Persian version of the Utrecht Grief Rumination Scale (UGRS), developed to assess grief-related rumination. The UGRS, originally validated in Western and Eastern cultures, had not been examined in a Iranian context. The research involved translating the UGRS into Persian, followed by a thorough psychometric evaluation involving 325 bereaved Persian-speaking adults. The Persian UGRS demonstrated strong internal consistency (Cronbach's alpha and McDonald's ω = 0.92) and test-retest reliability (ICC = 0.85). Confirmatory factor analyses supported a second-order hierarchical model of grief rumination. Concurrent validity was affirmed through significant correlations with depression, anxiety, prolonged grief, and PTSD. Known-groups validity highlighted higher rumination levels among individuals with lower education, those who lost close family members, and women. These findings underscore the Persian UGRS's reliability and validity, offering a robust tool for assessing grief-related rumination in the Iranian population., Competing Interests: Declaration of conflicting interestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

Objectives: Our study aimed to analyze and compare the grief experiences of individuals in Iran who lost family members to COVID-19 and those who lost loved ones to other natural causes., Methods: In this study, telephone interviews were conducted with 640 first-degree relatives, and finally, a total of 395 people remained in the research. Participants answered the Prolonged Grief Questionnaire (PG-13-R) and Grief Experience Questionnaire., Results: The results showed that the most common symptoms and features of grief were feeling guilt, searching for an explanation, somatic reactions, and rejection, with no significant difference observed between the 2 death groups. However, the average scores for these symptoms were higher in the COVID-19 death group. Moreover, the majority of bereaved reported signs and symptoms of prolonged grief, with a higher percentage in the COVID-19 death group, although there was no significant difference between the 2 death groups in terms of the distribution of symptoms and signs of prolonged grief. These findings suggest that the bereavement process can be challenging, and losing a loved one to COVID-19 may lead to more intense experiences of grief., Significance of Results: The study reveals high levels of guilt, searching for meaning, somatic reactions, and rejection among COVID-19 grievers. Losing loved ones to the pandemic appears linked to more intense, prolonged grief symptoms.

Background: The primary objective of the current paper was to assess the psychometric attributes of the Persian version of the Online Gambling Symptom Assessment Scale (P-OGSAS) within the Iranian population., Methods: The current study was conducted through a convenient sampling method between September and November 2021, involving 187 participants who had experienced online gambling at least once a month for the last 3 months. OGSAS was translated from English into Persian using the forward-backward translation method. Cronbach's alpha coefficient and principal component analysis (PCA) were employed to evaluate the reliability and validity of the scale, respectively. Participants were administered a battery of assessments, including P-OGSAS, Persian Gambling Disorder Screening Questionnaire (GDSQ-P), Patient Health Questionnaire-9 Items (PHQ-9), and Generalized Anxiety Disorder Questionnaire (GADQ-7), to assess validity and reliability., Findings: The results showed that the 3-factor model of this scale provides the highest level of predictability. The 3-factor model accounts for 54.8% of the square load. With a Cronbach's alpha coefficient of 0.807, P-OGSAS demonstrated satisfactory reliability. Finally, OGSAS has a significant correlation with other scales, and as a result, this scale has suitable convergent validity., Conclusion: P-OGSAS can adequately assess the symptoms and severity of online gambling. Therefore, clinicians could use this scale to evaluate the problems related to online gambling in the Iranian population., Competing Interests: Competing Interests The authors affirm that they do not possess any competing interests., (© 2024 Kerman University of Medical Sciences.)

One of the informal diagnoses in DSM-5 is Caffeine Use Disorder (CUD). CUD and high levels of caffeine consumption could impact mental health conditions. This study aimed to estimate the prevalence of CUD, caffeine consumption, caffeine-related harms, and related psychiatric symptoms in Iran. A cross-sectional survey with a convenience sample of 1228 adults were conducted in Iran. Caffeine consumption was assessed across 20 products in Iran. Caffeine Use Disorder Questionnaire (CUDQ), Caffeine Withdrawal Symptoms Questionnaire (CWSQ), 14-item Caffeine-related Harm Screening (CHS), and Symptom Checklist-25 (SCL-25) were used in the present study. We used SPSS (desktop version 26.0) to analyze the data using descriptive statistics, chi-square, and the least significant difference (LSD) post hoc test. The daily average caffeine consumption was 146.67 mg. The prevalence of CUD and caffeine withdrawal (C.W.) were estimated at 19.5% and 46.62%, respectively. Also, 12.9% of responders received CUD and C.W.s simultaneously. The prevalence of CUD was higher in men than females (25.08% vs. 13.93%). 95% of participants (n = 1166) reported using at least one caffeine product yesterday. Moreover, the most reported caffeine-related harms were the desire for sugar (42.9%), insomnia (39.3%), and caffeine dependence (38.3%). Age significantly correlates with CUD (- 0.07) and daily caffeine intake (0.08). Moreover, all SCL-90 subscales had a significant correlation with daily caffeine intake. Finally, responders at younger ages reported higher levels of CUD and caffeine consumption than older adults(P < 0.05). High rates of C.W. and CUD in the Iranian population suggest that it is necessary to develop evidence-based treatments., (© 2024. The Author(s).)

The quality control of thermally modified wood and identifying heat treatment intensity using nondestructive testing methods are critical tasks. This study used near-infrared (NIR) spectroscopy and machine learning modeling to classify thermally modified wood. NIR spectra were collected from the surfaces of untreated and thermally treated (at 170 °C, 212 °C, and 230 °C) western hemlock samples. An explainable machine learning approach was practiced using a TreeNet gradient boosting machine. No dimensionality reduction was performed to better explain the feature ranking results obtained from the model and provide insight into the critical wavelengths contributing to the performance of classification models. NIR spectra in the ranges of 1100-2500 nm, 1400-2500 nm, and 1700-2500 nm were fed into the TreeNet model, which resulted in classification accuracy values (test data) of 94.35%, 89.29%, and 84.52%, respectively. Feature ranking analysis revealed that when using the range of 1100-2500 nm, the changes in wood color resulted in the highest variation in NIR reflectance amongst treatments. As a result, associated features were given higher importance by TreeNet. Limiting the wavelength range increased the significance of features related to water or wood chemistry; however, these predictive models were not as accurate as the one benefiting from the impact of wood color change on the NIR spectra. The developed framework could be applied to different applications in which NIR spectra are used for wood characterization and quality control to provide improved insights into selected NIR wavelengths when developing a machine learning model.

Background: The COVID-19 pandemic has brought about far more stressful conditions for people worldwide. As a vulnerable group, older adults have suffered various psychological problems, such as stress, because of this pandemic and have applied various strategies to cope with the dire consequences. This study aimed to synthesize qualitative evidence regarding coping strategies for stressful situations among older adults throughout the COVID-19 pandemic., Methods: We searched electronic databases, including Scopus, Embase, PubMed, ProQuest, and the Cochrane Library, based on PRISMA standards. The protocol of this systematic review was registered on the PROSPERO (registration code: CRD42022364831). All relevant English-language articles published between 2019 and November 10, 2022, were searched. We reviewed the reference lists for all the included studies and key references. Two reviewers conducted screening, data extraction, and quality appraisal independently, with disagreements resolved by consensus with all team members. The Joanna Briggs Institute (JBI) checklist was used to assess the quality of studies. A thematic synthesis of the selected studies was conducted., Results: We included 13 studies in our review. Most studies were conducted in the early months of the COVID-19 pandemic. The stress caused by the COVID-19 pandemic was classified into six categories: health management challenges, stress caused by quarantine, economic challenges, media and bad news stress, virus threats, and challenges related to the use of communication technologies. The strategies used by older adults to cope with these challenges were categorized into five categories: protective strategies, avoidance strategies, maintaining social connections, meaning-based strategies, and fun strategies. This research showed that depending on the situation and conditions, older adults use various strategies to cope with COVID-19., Conclusion: Older adults experience much stress during the COVID-19 pandemic. In most cases, older adults can cope with these challenges with simple strategies from previous experiences and learnings. Older people require educational interventions in some cases, such as those involving communication skills. A better understanding of older adults coping strategies may enable policymakers to develop more effective policies and manage the problems of older adults in post-COVID situations., (© 2023. BioMed Central Ltd., part of Springer Nature.)

Background: The aim of the study was to investigate the psychometric properties of the Persian version of the 20-item Fear of Self Questionnaire (FSQ) in Iranian samples., Methods: A cross-sectional, descriptive survey design was used. Students in universities of Tehran were invited to participate. Participants were asked to complete the Persian versions of the FSQ, Vancouver Obsessional Compulsive Inventory (VOCI), Depression, Anxiety and Stress Scale (DASS-21), Ego Strength Scale (ESS), and Rosenberg's Self-Esteem Scale (RES). Face, content, and construct validity, internal consistency (Cronbach's alpha), and test-retest reliability of the FSQ were assessed., Results: Face and content validity of the FSQ were confirmed. Analysis of the principal components using the inclined rotation method showed that there were two factors with an eigenvalue >1, which explained 80.5% of the total variance. The first factor had 12 items and the second factor had 8 items. The internal consistency was 0.975, 0.981, and 0.941 for the total score and the first and second factor, respectively, whereas the test-retest reliability was 0.732, 0.729, and 0.714, respectively (all p ≤ 0.01). For convergent validity of the FSQ, correlations of the total score and the two factors of the FSQ with the scores of VOCI, RES, ESS, and DASS-21 were all significant (p ≤ 0.01)., Conclusion: The FSQ can be used in Iranian samples for clinical practice and research., Competing Interests: All authors have disclosed no conflicts of interest.

Cross-laminated timber (CLT) can be used as an element in various parts of timber structures, such as bridges. Fast-growing hardwood species, like poplar, are useful in regions where there is a lack of wood resources. In this study, the withdrawal resistance of nine types of conventional fasteners (stainless-steel nails, concrete nails and screws, drywall screws, three types of partially and fully threaded wood screws, and two types of lag screws), with three loading directions (parallel to the grain, perpendicular to the surface, and tangential), and two layer arrangements (0-90-0° and 0-45-0°) in 3-ply CLTs made of poplar as a fast-growing species and fir as a common species in manufacturing of CLT was investigated. Lag screws (10 mm) displayed the highest withdrawal resistance (145.77 N), whereas steel nails had the lowest (13.13 N), according to the main effect analysis. Furthermore, fasteners loaded perpendicular to the grain (perpendicular to the surface and tangential) had higher withdrawal resistance than those loaded parallel to the grain (edge). In terms of the layer arrangement, fasteners in CLTs manufactured from poplar wood (0-45-0°) had the greatest withdrawal resistance, followed by CLTs manufactured from poplar wood in the (0-90-0°) arrangement, and finally, those made from fir wood in the (0-90-0°) arrangement. The fastener type had the most significant impact on the withdrawal resistance, so changing the fastener type from nails to screws increased it by about 5-11 times, which is consistent with other studies. The results showed that poplar, a fast-growth species, is a proper wood for manufacturing CLTs in terms of fastener withdrawal performance.

Ticks are considered as the reservoirs for pathogenic Rickettsia for humans and domestic animals. Recently, clinical cases of rickettsiosis have been reported from Iran and its surrounding countries. This study was aimed at investigating the prevalence of Rickettsia spp. in ticks in Southeastern Iran.All ticks were collected April to September 2019 from the domestic animals and stray dogs from different villages of Kerman province. For the primary detection of Rickettsia spp., Real-Time PCR was carried out on extracted DNA from ticks by targeting the 16 S rRNA gene. From the PCR-sequencing method of 16 S rRNA, citrate synthase (gltA), antigen 17 kDa, and ompA genes were used for identification of Rickettsia spp. in Real-Time PCR positive samples. A total of 185 ticks were examined and belonged to the genus Hyaloma and Rhipicephallus. Ticks with most frequencies included Rhipicephallus sanguineous (30.9%). In total, six samples (3.24%) were positive for Rickettsia spp. using the Real-Time PCR. According to the results of sequencing and phylogeny, samples were closely related to R. rhipicephali (2 samples) and R. massiliae (four samples). These results are important in the detection and epidemiology of Rickettsia spp. in Iran and indicate the necessity of detection and prevention approaches for rickettsiosis., (Copyright © 2022. Published by Elsevier Ltd.)

Introduction: Mothers with a disabled child experience excessive stress, fatigue, frustration, and depression. Failure of mothers to effectively deal with these symptoms can lead to chronic fatigue and, in the long run, burnout. The objective of the present study was to determine the effect of supportive-training intervention on the burnout of mothers with disabled children. Methods: In this randomized controlled trial, 70 mothers with disabled children studying in special schools were selected in one of the urban areas of Iran. They were divided into two groups of intervention and control, using Minimization Random Method. In the intervention group, mothers participated in supportive-training sessions once a week for a period of 6 weeks. The control group did not receive any special interventions. The data collection tool was a demographic data form and Shirom-Melamed Burnout Questionnaire (SMBQ). Burnout was evaluated as primary outcome at the beginning of the study and one month after the end of the intervention. The data were analyzed by SPSS software version 18. Results: Based on the results, there was no significant difference between the mean score of burnout in the intervention and control groups before the intervention. However, after the intervention, the mean score of burnout in the intervention group was significantly lower than that of the control group. Conclusion: Considering the positive effect of supportive-training intervention on the burnout of mothers of disabled children, this intervention is recommended by nurses and other health care providers in special schools, health centers, and supportive institutions., (© 2020 The Author(s).)

The authors have modified a carbon paste electrode with Al 2 O 3 -supported palladium nanoparticles (PdNP@Al 2 O 3 ) to obtain a sensor for simultaneous voltammetric determination of melatonin (MT), dopamine (DA) and acetaminophen (AC). The PdNP@Al 2 O 3 was characterized by scanning electron microscopy and energy-dispersive X-ray spectra. The sensor can detect DA, AC, MT and their mixtures by giving distinct signals at working voltages of typically 236, 480 and 650 mV (vs. Ag/AgCl), respectively. Differential pulse voltammetric peak currents of DA, AC and MT increase linearly in the 50 nmol L -1 - 1.45 mmol L -1 , 40 nmol L -1 -1.4 mmol L -1 , and 6.0 nmol L -1 - 1.4 mmol L -1 concentration ranges. The limits of detection are 36.5 nmol L -1 for DA, 36.5 nmol L -1 for AC, and 21.6 nmol L -1 for MT. The sensor was successfully used to detect the analytes in (spiked) human serum and drug samples. Graphical abstract Schematic presentation of Al2O3-supported palladium nanoparticles (PdNP@Al2O3) for modification of a carbon paste electrode (CPE) to develop a voltammetric sensor for the simultaneous determination of dopamine (DA), acetaminophen (AC) and melatonin (MT).

Background: Anemia is a common complication of chronic renal failure due to reduce erythropoietin production by kidneys. Anemia treated with recombinant human erythropoietin (rHu-EPO). Pure red cell aplasia (PRCA) due to antibody productionagainst rHu-EPO is a rare but major complication of this drug., Objectives: The aim of this study was to determine the prevalence of PRCA due to antibodies in dialysis patients with resistant anemia who received erythropoietin., Patients and Methods: We studied 128 under maintenance hemodialysis patients more than 3 month in Kashan. In patients with anemia who received erythropoietin with dose requirements based on weight and anemia and without any another cause for anemia, evaluate for PRCA and anti-rHu-EPO antibody level were measured by ELISA., Results: In this research, 75 patients (58.6%) were male and 53 patients (41.4%) were female. The mean age of the patients was 59.05 ± 16.66 years. The result of analysis showed that 55 (43%) patients had anemia with hemoglobin level less than 10 mg/dL. Only 3 patients had PRCA and antibodies against erythropoietin in serum. There were no correlation between age, gender, cause of renal failure, hemodialysis duration, hemoglobin level, rHu-EPO dose and levels of anti-rHu-EPO antibody serum value., Conclusions: The result of this study indicated that administration of rHu-EPO in dialysis patients afflicted to kidney failure may cause PRCA especially through intravenous injection. However, this change is not statistically significant.