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The aim of this study is to investigate the gender inequalities in perceived stress and the influencing factors in infertile couples in Iranian society.

This cross-sectional study was conducted on infertile couples who were referring to Kurdistan Infertility Diagnosis and Treatment Medical Center in 2019. Demographic and clinical information questionnaire, Newton's Infertility perceived stress questionnaire, Rosenberg's standard self-confidence questionnaire and the multidimensional scale of social support were used. Multiple linear logistic models were also used.

A total of 560 couples (1,120 people) participated in the study. The average perceived infertility-related stress, self-esteem scores and social support and social-emotional loneliness were 173.95 ± 41.87, 13.99 ± 2.29 and 27.81 ± 7.33, respectively, which were significantly different scores across infertility cause and sex (P < 0.05). Males compared to females had lower perceived infertility-related stress (169.93 ± 42.51 vs 177.97 ± 40.86, P = 0.001) and self-esteem scores (14.33 ± 2.29 vs 13.66 ± 2.24, P < 0.001) and social support and social-emotional loneliness (32.92 ± 9.31 vs 30.94 ± 9.04, P < 0.001). The partners who reported themselves as infertile, compared significantly higher in perceived infertility-related stress than those who reported their spouse being infertile (194.24 ± 35.33 vs 141.90 ± 39.28), lower self-esteem scores (12.77 ± 2.21 vs 13.94 ± 1.56) and social support and social-emotional loneliness score (27.81 ± 7.33 vs 30.11 ± 7.70). Also, after taking potential confounders into account with increase in each score of self-esteem, 12.19 units of stress decreases (P < 0.001, 95% CI: 11.40–12.99) and with increase in each score of social support and social-emotional loneliness, 3.45 units of stress decreases (P < 0.001, 95% CI: 3.28–3.63).

There is perceived stress among infertile couples, and this rate is higher among infertile people and women. Therefore, it seems that specific intervention programs for infertile couples should be implemented based on the results of this study, and their stress levels in a way that self-esteem and support for both partners be increased and the perceived stress among women and infertile individuals be decreased.

The study aims to determine the relationship between emotional maturity and domestic violence in infertile women.

The cross-sectional study was conducted on 184 infertile women. Demographic questionnaire, Emotional Maturity Scale and domestic violence questionnaire were used to collect data. The Chi-square test and multivariate logistic regression were used to analyze the data.

More than 50% of the women in the study experienced domestic violence, and about the same percentage of them had unstable emotional maturity. The total score of domestic violence and its types were significantly related to the women’s emotional maturity (P < 0.001). In multivariate analysis, the significant relationship was found between domestic violence with Spouse's education level (primary/secondary) [OR = 0.25 (0.09–0.66)] and emotional maturity (unstable) [OR = 3.59 (1.83–7.02)].

The overall prevalence of infertility in Iran was 7% in 2021. Furthermore, although infertility is a problem among couples, most of its social burden lies with women. In a number of developing countries, as well as in Iran, childbearing is perceived as a social value for married women. Therefore, infertile women are at risk for depression, anxiety, low self-esteem, dissatisfaction and reduced quality of life.

This study found that half of the surveyed women experienced domestic violence. Women’s emotional immaturity, as well as their spouses’ lower education level and type of occupation, were highly correlated with women’s experience of domestic violence. To help prevent domestic violence among couples, there should be couple training classes to improve women’s emotional maturity.”

This paper contributes to the existing literature by extending the empirical work on the relationship between corporate governance and capital structure by analyzing the mediating role of cost of capital in the non-financial firms listed on the Pakistan Stock Exchange (PSX).

The sample for this study includes non-financial firms listed on the Pakistan Stock Exchange (formerly Karachi Stock Exchange) for the period of 2004–2016. Based on 1800 firm-year observations, three approaches of panel data analysis are applied for the step-wise analysis of the underlying study. Firstly, Pooled OLS is applied. Secondly, fixed and random effect panel regression followed by the Hausman test to check the unobservable individual heterogeneity of the data. Hausman test indicates that the fixed-effects model is the most appropriate model for the sample panel data.

The study's findings are that board size, board composition, CEO/Chair duality, institutional ownership and managerial ownership have statistically significant direct effect on the firm's financing decisions. However, CEO/Chair duality, institutional ownership and managerial ownership have significant indirect effect on firm's capital structure decisions. The interesting finding of the paper is on the evidence of mediating role of cost of capital in the nexus of corporate governance and capital structure. Moreover, some conventional determinants of capital structure, including the firm's size, asset structure of the firm, profitability, business risk and growth, are found as determinants of capital structure decisions of the firms.

There are a few limitations to our study which could be addressed by upcoming research. We did not include all the four mechanisms of corporate governance including board structure, audit structure, compensation structure and ownership structure. However, we used only five important attributes including board size, board composition and CEO/Chair duality form board structure, managerial ownership and institutional ownership form ownership structure of corporate governance as our explanatory variables to examine their impact on the capital structure choices of the firms. Future studies may fill this research gap by involving some other attributes of corporate governance and analyzing their effectiveness and impact on value relevant capital structure decisions. Further, due to limited time and resources, we only tested the mediating role of cost of capital, hence, future researchers can analyze the mediating and moderating roles of different variables which may influence the relationship between corporate governance and capital structure choices of the firms.

The study has many valuable guidelines and practical implications for the financial managers of the corporations. Our results will facilitate the policymakers in setting their corporate governance policies and practices and making the value relevant capital structure decisions in compliance with the implications of corporate governance mechanism. In addition, our study provides the empirical evidence in accordance with the argument that good governance practices, particularly the voluntary disclosures by the firm may reduce the information asymmetry which, ultimately, reduces the agency cost and the cost of capital for the firm. However, while deciding the financial policy of the corporations, managers can use our findings in order to assess the effectiveness of corporate governance practices employed by the firm in achieving the optimal capital structure at which the weighted average cost of capital is at its minimum level.

This paper contributes to the literature by investigating the mediating role of the cost of capital in the relationship between corporate governance and capital structure decisions of the firms. This paper provides empirical evidence that corporate governance indirectly affects capital structure decisions through the mediating role of cost of capital.

Argan nutshell wood (ANW) has been used in this study as an agricultural solid waste to remove Congo red (CR) from an aqueous solution in single and mixture binary in the presence of methylene blue (MB) or crystal violet (CV).

The ANW was characterized by Fourier transform infrared and scanning electron microscope analysis. The effect of ANW dose (8–40 gL⁻¹), contact time (0–180 min), pH of the solution (4–11) and CR dye concentration (100–500 mgL⁻¹) on CR adsorption was studied in batch mode and evaluated by kinetic and isotherm models in a single system. In the binary system, the CR removal was studied from a CR + MB and CR + CV mixture with different percentages of dyes, ranging from 0% to 100%.

The pseudo-second-order and the Langmuir models could best describe the CR sorption onto ANW in a single system. In addition, in the case of the binary system, there is the appearance of a synergistic phenomenon between the CR and the other cationic dyes and the CR adsorption capacity increased until 12.24 mg g-1 and 12.06 mg g-1 in the presence of the MB and CV in the mixture, respectively.

This study demonstrated that ANW prepared can be suggested as an excellent potential adsorbent to remove dyes from wastewaters from single and mixture systems.

This study is original.

The house not only provides shelter and security but also is a reflection of human privacy. One of the important factors involved in house design is privacy. The current research is a case study that examines privacy's evolution in contemporary houses in Kerman using space syntax techniques.

This study is based on the quantitative approach of space syntax. A total number of 15 houses in Kerman built in three periods of Qajar, Pahlavi and the Islamic Republic, were examined for the space syntax indices using UCL DepthMap. The DepthMap outputs were also analyzed using one-way ANOVA.

The findings indicated that the arrangement of spaces in houses has altered over time from the 1920s onwards. There is a significant difference between houses of the Qajar, Pahlavi and the Islamic Republic eras, indicating a reduction in the hierarchy of access and reduced privacy in houses in the Islamic Republic.

Numerous factors affect privacy (e.g. confidentiality, interface spaces, quality of openings and visibility). Nevertheless, this study focused on the impact of spatial configuration on privacy. It can be stated that the design of houses from the Pahlavi period was gradually associated with changes in culture and modern architecture, leading to a decrease in privacy.

This study used space syntax to examine the evolution of privacy in contemporary Iranian houses. Since privacy is a substantial issue in the middle east communities, the findings can help designers and relevant organizations consider privacy as much as other comfort factors in the early stages of design.

The purpose of this paper is to study the optimal conditions of the mixed convection in a ventilated square cavity filled with Cu-water nanofluid using the Taguchi method. The paper aims to discuss diverse issues affecting the said model.

The numerical solutions of nonlinear coupled equations are developed by means of the Taguchi method. The Taguchi method is used as an effective way to optimize the design process engineering tests.

The governing equations are discretized using a finite volume method and solved with semi-implicit method for pressure linked equations (SIMPLE) algorithm. The effect of Richardson number (0.01-10), the volume fraction of nanofluid (0-5 per cent), distance of inlet port position from bottom wall of the cavity (0-0.9 H) and distance of outlet port position from top wall of the cavity (0-0.9 H) as effective parameters are analyzed across four levels. This analysis is done for fixed Grashof number 10⁴. The results show that the mean Nusselt number almost decreases by an increase in the Richardson number, volume fraction of nanofluid, position of the inlet port and position of the outlet port. It is found that the cavity with distance of inlet port position from bottom wall of the cavity 0 and distance of outlet port position from upper wall of the cavity 0.9 H at the Richardson number 0.01 and the volume fraction 3 per cent is the optimal design for heat transfer.

As far as the authors know, this model has been investigated for the first time.

The present research aims to compare information-seeking behaviour of ordinary and elite saffron farmers in Iran.

The study sample consisted of 375 saffron farmers (295 ordinary and 80 elite saffron farmers) selected using the cluster sampling method. Data were collected by a kind of researcher-made questionnaire.

The results showed saffron onion, pesticides, cultivators and farmland worker were the main components of saffron farmers’ information-seeking behaviour of both groups. The most important sources of information for both groups included reference to past experience, neighbouring saffron farmers, contact with informants and other family members. The main criteria which affected the behaviour of the two groups on the use of information sources were provided information in local language, native people, clear and intelligible information and low cost. Farmers were also confronted with common problems such as lack of attention to the needs of farmers and insufficient number of technical experts. It was also found that there was no significant relationship between information-seeking behaviour of elite and ordinary saffron farmers and their performance.

Saffron is one of the most important agricultural export products in Iran, and this paper is the first research in this subject. The results can help develop information-seeking behaviour of farmers.

The host–guest molecules are often used in various fields and applications. This paper aims to discuss the role of host–guest complexes in the textile industry, focusing on calixarenes as a potential adsorbent for hazardous dyes. The paper begins with an introduction to nanotechnology and its many uses, including textiles.

The risks associated with the utilisation of dyes and its adverse effects on the environment are then also highlighted. This paper also discusses the structure and characteristics of calixarenes and their potential use as an adsorbent to extract toxic metals from aqueous solutions. The paper also explains the molecular structure of calixarenes, especially the ability of its upper and lower rims, which can be altered to yield derivatives with various selectivities for diverse guest ions and small molecules. In addition, the application of various host–guest molecules in the textiles industry to extract dyes also had been discussed.

In conclusion, the paper highlights the essential in establishing a systematic review on the significance of selective adsorbents, such as calixarenes, to isolate particular targets from diverse matrices in the textile industry.

Only discussing several applications for several host–guest molecules.

The paper concisely describes various host–guest molecule applications in the textile industry, with each molecule being elaborated upon in detail.

The dyeing of cellulosic and proteinous fibers with natural and synthetic colorants usually needs large amounts of metal salts to promote the dyeing procedure. To get rid of the necessity to use metal salts, plasma treatment and subsequent attachment of chitosan biopolymer were considered as green processes for surface functionalization of wool and cotton. The purpose of this paper is to investigate the effect of oxygen plasma treatment and attachment of chitosan on the dyeability of wool and cotton fabrics using walnut and weld as model natural dyes, as well as C.I. reactive blue 50 and C.I. acid blue 92 as model synthetic dyes.

Wool and cotton fabrics were modified with oxygen plasma and coated with chitosan solution. The un-modified and modified samples were dyed with the above-mentioned dyes under constant conditions. The color strength, color coordinates and fastness properties of the dyed samples were determined and compared.

The results showed that oxygen plasma treatment could improve the dyeability and fastness properties of wool and cotton fibers when dyed with all of the above-mentioned dyes. Attachment of chitosan to the plasma-treated samples significantly improved the dyeability of wool and cotton fibers with walnut, acid and reactive dyes. The fastness properties of the dyed samples were enhanced by plasma treatment and chitosan coating.

This study uses plasma treatment as an environmentally friendly pre-treatment for attachment of chitosan on wool and cotton. This process improved the dyeing properties of both fibers. The use of metal salts in not needed for dyeing of wool and cotton according to the investigated process.

Female prisoners are a vulnerable group in society, often exposed to emotional deprivation and violent experiences and in need of support and attention due to mental health problems. The purpose of this study is to find out whether logotherapy, as an existential approach that emphasizes finding the true meaning in life, can affect imprisoned women’s level of hope, as well as investigating the relationship between participants’ criminological and demographic factors.

This study comprised a clinical trial with pre-test and post-test, carried out in two groups of intervention and control. The research environment for the study was the Prison Training Center of Shiraz. In total, 90 imprisoned women participated in the study, with the intervention group attending 10 sessions of group logotherapy. Two questionnaires, the Miller Hope scale and demographic and criminological information questionnaires were used for assessment. Participants were evaluated in three periods before, immediately after and one month after the intervention.

The results showed that logotherapy had a significant effect on increasing the feeling of hopefulness (p = 0.001). Therefore, using the logotherapy approach in other vulnerable groups is recommended.

This study can be a basis for further research due to limited studies on the mental health of women prisoners in the country.