The International Olympic Committee emphasizes the implementation of the principles of sustainable development in sports realm. The current research was conducted with the aim of identifying and prioritizing the effective components of the green management in the context of Iranâs sports fabrics. The objective of this research is developmental and, in terms of methodology, it is descriptive-survey type, in which both quantitative and qualitative methods have been used. Initially, the data was collected and categorized using theoretical basses, literature review, and high-level documents. Through an in-depth study and interviews with 26 experts in the field of sports and the country's environment, the factors affecting the sustainable development of the country's sports were identified. In order to prioritize the criteria, the fuzzy analytics hierarchical process (FAHP) was employed. The results showed that the data distribution was normal. Based on the research findings, 4 criteria and 21 sub-criteria were identified as effective components. The sociocultural criterion with a weight of 0.54884 had the highest degree of importance, followed by the environmental/health criterion with a weight of 0.29265 and approach-management with a weight of 0.10670. Economic criterion also had the lowest priority with a weight of 0.05222. In addition, the pairwise-fuzzy comparison of the sub-criteria indicated that the sub-criterion combating the social exclusion, with a weight of 0.229, held the highest significance, followed by the sub-criterion promoting activities by the youth, and improving their involvement in social life and sports authority institutions with a weight of 0.134. Meanwhile, the economic criterion had less important and it indicated that this parameter did not play a role as a deterrent in moving towards sustainable development. The results were aligned with the 21 Agenda of the Olympic Movement and the Rio Declaration. Finally, the main solution to make sustainable development special is to try to attract people and young people as well as participation in different social groups in sports activities. Also, sports facilities, equipment and facilities are among the other proposed solutions with environmental considerations in mind.

This research aims to design a model for managing urban floods in Tehran. For this purpose, DSPIR model and Delphi panel (consensus of 18 experts) were used. In order to achieve effective criteria and indices, a researcher-made questionnaire was used, and to determine the validity and reliability of the questionnaire, Cronbach's alpha method was used by SPSS, Version 21 software. Fuzzy AHP (Analytic Hierarchy Process) method was used to determine the weights of criteria as well as classes of each criterion, and PLS (Partial Least Squares) method to fit the model. The results indicated that the model in connection with flood driving force in Tehran comprises 5 components and 16 dimensions. Evaluation of goodness for model fit shows that GFI is equal to 0.954, which is within the acceptable range. RMR is equal to 0.011, which is within the acceptable range. TLI, CFI and IFI are 0.931, 0.987 and 0.986, respectively, all of which are within acceptable ranges. CMIN/DF is equal to 4.255, and RMSEA is equal to 0.065, therefore, they are within acceptable ranges. In general, the results of model analysis and evaluation showed that the model has the accuracy needed to simulate urban runoff and this model can be used for urban flood management plans and design of urban flood drainage network in the studied area.

The purpose of this study was the environmental pollution risk assessment of urban underground public space development in Tehran (Iran). This applied research was conducted by survey and mixed methods in two phases: estimating risk potentials using Environmental Failure Mode and Effect Analysis (EFMEA), and Delphi Technique. The results identified 12 different environmental risks for the underground public space development. Among these, three risks showed high level, including sewage discharge (Risk Priority Number (RPN=504), inappropriate ventilation (RPN=567) and seismic hazard (RPN=640). Moreover, five cases were classified as medium level risks, including Construction waste accumulation of (RPN = 294), Land subsidence (RPN = 250), Municipal waste accumulation (RPN = 441), Non-renewable energy consumption (RPN = 256) and Thermal pollution (RPN = 210). In addition, three items were among high-level risks, including Sewage discharge (RPN = 504), Inappropriate ventilation (RPN = 567) and Seismic hazard (RPN = 640). The development of urban underground public space in Tehran can be a solution to improve the level of services and urban per capita, which is a great help in the urban management of a metropolis like Tehran. Meanwhile, it is important to pay attention to the environmental, health and safety polices.

This study aimed to identify and prioritize effective methods to increase public education and participation in household waste management in Tehran (capital of Iran) as a pilot city. First, baseline data were gathered through a library research process, and then 33 waste management experts were employed as a panel to complete a researcher-made questionnaire on a Likert scale. Statistical tests and factor analysis were used to analyze the data and determine the relationships between the components. According to the results, among the determined 27 items of identifying and developing educational approaches for public participation in waste management, the item "environmental literacy" ranked first with an average score of 4.52, and the item "individual training" ranked lowest with an average score of 3.91. The final model includes five levels of factors influencing environmental education and promoting public participation. Normed Fit Index (NFI=0.96), Relative Fit Index (RFI=0.96), and Comparative Fit Index (CFI=0.98) indicated that the proposed model had a good fit. The Goodness of Fit Index (GFI=0.91) and the Adjusted Goodness of Fit Index (AGFI=0.89) also confirmed the goodness of fit of the model. Effective municipal waste management requires active participation of citizens, which can be achieved by providing environmental education.

The accumulation of potentially toxic elements (PTEs) in roadside soils and plant leaves due to vehicular emissions presents significant environmental and public health risks, particularly in densely populated urban areas. This study evaluated the concentrations of five PTEs—copper (Cu), lead (Pb), nickel (Ni), cadmium (Cd), and zinc (Zn)—in soils and leaves of three urban plant species (Pine, Cypress, and Mulberry) across six highways in Tehran, Iran, categorized into high, medium, and low-traffic zones. Soil samples were collected at a depth of 0–30 cm, and leaf samples were obtained from the canopy's outer sections. Samples were digested with aqua regia (soil) and nitric-hydrochloric acid (leaves) and analyzed using atomic absorption spectrophotometry. Pollution indices, including Pollution Load Index (PLI), Transfer Factor (TF), and Bioaccumulation Factor (BCF), were applied to assess contamination levels and metal mobility.The results showed moderate pollution levels across high-traffic zones (PLI = 3.94), with cadmium (Cd) contributing the most significant ecological risk (RI = 154.50). Transfer Factor (TF) analysis revealed high bioavailability for zinc (TF = 0.78) and lead (TF = 0.81), while cadmium exhibited limited uptake by plants (TF < 0.004). Bioaccumulation Factor (BCF) calculations indicated Pine and Cypress species had higher potential for metal uptake, with BCF values exceeding 1 for zinc and lead in high-traffic areas, whereas Mulberry demonstrated relatively lower accumulation. Despite a normalized NIPI index value of 1, the enrichment factor (EF) for zinc (EF = 98.04) underscores significant anthropogenic contributions, particularly from non-exhaust vehicular emissions. These findings highlight the need for ongoing monitoring, effective traffic management, and remediation strategies to address heavy metal pollution in urban environments.

As the world entered the industrial era, the nature of environmental threats and dangers posed by technology also have gone through fundamental changes. One of these environmental pollutants is the propagation of waves with different wavelengths in the environment. In this study, we aimed to investigate the effect of 2.45 GHz microwaves on blood biomarkers of mice. In this study, 80 immature male BALB/c mice were used. According to the inclusion criteria, 72 mice were included in the study. Mice were divided into two groups (control group=24 mice, exposed group=48 mice). Exposed groups were divided into two subgroups of 24 (groups A and B). Subgroup A was exposed to a simple modem without antenna and subgroup B was exposed to a modem with two antennas. In the first phase of the study, mice were exposed daily for 60 minutes for 90 days and in the second phase for 8 hours daily for 90 days. Blood samples were taken on days 90 and 180. Data analysis was done by SPSS software version 25 (P value<0.05). This study shows that blood cells are affected by long-term exposure to Wi-Fi waves by decrease in number and volume. Furthermore, no significant difference was observed between the blood parameters of the two groups exposed to different modems which vary in the number of antennas. The results showed that the highest effect of Wi-Fi waves was on the following blood factors, respectively PLT, RBC, HCT, HGB, and WBC.

The aim of this study was to assess the noise pollution of sports facilities in multi-purpose halls in Lahijan city, Iran. This research was of applied type. Through networking, 16 halls were randomly selected in four zones of the city and data were collected in the field. The sound level in the clubs was measured at level A and as an equivalent level by a portable device and Decibel X 2019 and compared with the sound standard (OSHA-90 dBA). The measurements were performed in triplicate and repeated three times. The calculated parameters included sound pressure level (SPL), average sound level ((LP) ̅), continuous sound equivalent level (Leq) and individual daily dose LAEp,d. The results showed that the lowest sound pressure level was 73.9 dB in the northern zone and in the first turn. The highest sound pressure level in the western zone was 97.7 dB. As the time changed from early morning to night, the average sound pressure level increased, highlighting the direct relationship between the sound pressure level and the measurement time. The average sound level in the western zone was higher than in other zones, and the average sound level in the southern zone was lower than in other zones. In both zones, the gyms were of the shed type, which could not establish a relationship between the structural form and the sound level. All the studied halls had levels higher than the standards for recreation centers and parks, as well as the standards of the United States Environmental Protection Agency (EPA). However, all of the gyms met other standards such as ACGIH, NIOSH and OSHA standards related to occupational health. Finally, there was a relationship between the urban location of sports halls and the sound level, such that halls located in the northern and western zones (the more affluent part of the city) had higher sound levels; in contrast, those located in the southern and eastern zones (poorer areas of the city) had lower sound levels.

Harmful Algal Blooms involving the dinoflagellate Alexandrium pacificum continue to increase in ecosystems suffering the climate warming and anthropogenic pressure. Changes in the total proteome and physiological traits of the Mediterranean A. pacificum SG C10–3 strain were measured in response to increasing temperature (24 °C, 27 °C, 30 °C) and trace metal contamination (Cu2+, Pb2+, Zn2+, Cd2+). Warming reduced the cell densities and maximal growth rate (μmax), but the strain persisted at 30 °C with more large cells. The polymetallic stress increased cell sizes, reduced cell growth at 24 °C–27 °C and it increased this at 30 °C. Toxin profiles showed a predominance of GTX4 (32–38 %), then C2 (11–34 %) or GTX6 (18–24 %) among the total Paralytic Shellfish Toxins, however these were modified under warming, showing increased contents in GTX1 (among the most toxic), GTX5, C1 and NeoSTX, while dc-NeoSTX and STX (among the most toxic) only appeared at 30 °C. Under polymetallic contamination, warming also increased contents in GTX5 and NeoSTX. In contrast, polymetallic stress, or warming had harmful effects on C2 contents. Proteins were more quantitatively produced by A. pacificum SG C10–3 under warming in accordance with the high levels of up-regulated proteins found in the total proteome in this condition. Polymetallic stress, only or combined with warming, led to low proteomic modifications (1 % or 4 %), whereas warming induced strong 52 % modified proteomic response, mainly based on up-regulated proteins involved in photosynthesis (light harvesting complex protein), carbohydrate metabolism (arylsulfatase) and translation (ribosomal proteins), and with the lesser down-regulated proteins principally associated with the lipid metabolism (type I polyketide synthase). Our results show that warming triggers a strong up-regulated A. pacificum SG C10–3 proteomic response, which, coupled to modified cell sizes and toxin profiles, could help it to withstand stress conditions. This could presage the success of A. pacificum in anthropized ecosystems submitted to global warming in which this dinoflagellate also might be more toxic.

This study addresses the pressing issue of plastic pollution in coastal and marine ecosystems, challenging the misconception that the entrapment of plastics can be considered as an ecosystem service. We differentiate between essential natural processes that sustain ecological balance and biodiversity and the detrimental accumulation of synthetic polymers. The pathways through which plastics enter these environments—from terrestrial to maritime sources—are examined, alongside their pervasive impacts on crucial ecosystem services such as habitat quality, the vitality of marine species, and nutrient cycling. Our findings highlight the paradox of resilience and vulnerability in these ecosystems: while capable of accumulating substantial amounts of plastic debris, they suffer long-lasting ecological, socio-economic, and health repercussions. We argue for a paradigm shift in management strategies aimed at reducing plastic production at the source, improving waste management practices, conducting targeted cleanup operations, and rehabilitating impacted ecosystems. Emphasizing a comprehensive understanding of plastic pollution is vital for framing effective solutions and necessitates a reevaluation of societal, industrial, and regulatory frameworks. This shift is imperative not only to address current pollution levels but also to safeguard and sustain the functionality of coastal ecosystems, ensuring their ability to continue providing essential services and supporting biodiversity.

Conservation of ecosystems is an important tool for climate change mitigation. Seagrasses, mangroves, saltmarshes and other marine ecosystems have particularly high capacities to sequester and store organic carbon (blue carbon), and are being impacted by human activities. Calls have been made to mainstream blue carbon into policies, including carbon markets. Building on the scientific literature and the French voluntary carbon standard, the ‘Label Bas-Carbone’, we develop the first method for the conservation of Posidonia oceanica seagrasses using carbon finance. This methodology assesses the emission reduction potential of projects that reduce physical impacts from boating and anchoring. We show how this methodology was institutionalized thanks to a tiered approach on key parameters including carbon stocks, degradation rates, and decomposition rates. We discuss future needs regarding (i) how to strengthen the robustness of the method, and (ii) the expansion of the method to restoration of seagrasses and to other blue carbon ecosystems.