Urban Origin Research Articles

Chemical profiling of organic contaminants in rural surface waters combining target and non-target LC-HRMS/MS analysis

The pollution of natural waters by contaminants of emerging concern (CECs) is one of the pressing problems due to their global distribution and potential negative effects on the environment and human health. In rural areas with lower population density and limited industrial development, less contamination is expected. However, the lack of wastewater treatment plants (WWTPs) or their poor removal efficiency can lead to significant input of pollutants. In this context, 11 streams of rural areas in the Guadalquivir River basin, southeast of Spain, were studied over two years to obtain an overview of the origin and distribution of contaminants. A target method using solid-phase extraction and liquid chromatography coupled to high resolution mass spectrometry (LC-HRMS) was developed for the analysis of 316 compounds in surface waters. A total of 78 target analytes were detected, comprising pesticides, pharmaceuticals, personal care products (PCPs), transformation products (TPs), and industrial chemicals. The flame retardant tributyl phosphate (16–3572 ng L−1) was detected in all samples, followed by caffeine (30–8090 ng L−1) and the analgesic tramadol (3–1493 ng L−1). The target approach was combined with a non-target analysis (NTA) strategy to obtain an overall perspective of the chemical profile of unexpected or unknown compounds in the samples. Up to 79 contaminants were tentatively identified, and 12 of them were finally confirmed with standards. Most of the contaminants determined by NTA were pharmaceuticals and their TPs. The results indicated that most of CECs have an urban origin despite traditional agriculture is the main economic activity in this region. Moreover, the absence of WWTPs in small towns is significant, as contamination levels at these sites were comparable to or higher than those in larger populations with sewage treatments.

Occurrence of 40 sanitary indicators in French digestates derived from different anaerobic digestion processes and raw organic wastes from agricultural and urban origin.

This study investigated the sanitary quality of digestates resulting from the mesophilic anaerobic digestion (AD) of urban and agricultural organic wastes (OWs). 40 sanitary indicators, including pathogenic bacteria, antimicrobial resistance genes, virulence factor genes, and mobile genetic elements were evaluated using real-time PCR and/or droplet digital PCR. 13 polycyclic aromatic hydrocarbons (PAHs) and 13 pharmaceutical products (PHPs) were also measured. We assessed agricultural OWs from three treatment plants to study the effect of different AD processes (feeding mode, number of stages, pH), and used three laboratory-scale reactors to study the effect of different feed-supplies (inputs). The lab-scale reactors included: Lab1 fed with 97% activated sludge (urban waste) and 3% cow manure; Lab2 fed with 85% sludge-manure mixture supplemented with 15% wheat straw (WS); and Lab3 fed with 81% sludge-manure mixture, 15% WS, and 4% zeolite powder. Activated sludge favored the survival of the food-borne pathogens Clostridium perfringens and Bacillus cereus, carrying the toxin-encoding genes cpe and ces, respectively. Globally, the reactors fed with fecal matter supplemented with straw (Lab2) or with straw and zeolite (Lab3) had a higher hygienization efficiency than the reactor fed uniquely with fecal matter (Lab1). Three pathogenic bacteria (Enterococcus faecalis, Enterococcus faecium, and Mycobacterium tuberculosis complex), a beta-lactam resistance gene (bla TEM), and three mobile genetic elements (intI1, intI2, and IS26) were significantly decreased in Lab2 and Lab3. Moreover, the concentrations of 11 PAHs and 11 PHPs were significantly lower in Lab2 and Lab3 samples than in Lab1 samples. The high concentrations of micropollutants, such as triclosan, found in Lab1, could explain the lower hygienization efficiency of this reactor. Furthermore, the batch-fed reactor had a more efficient hygienization effect than the semi-continuous reactors, with complete removal of the ybtA gene, which is involved in the production of the siderophore yersiniabactin, and significant reduction of intI2 and tetO. These data suggest that it is essential to control the level of chemical pollutants in raw OWs to optimize the sanitary quality of digestates, and that adding co-substrate, such as WS, may overcome the harmful effect of pollutants.

Phenotypic plasticity as the main driver of alien plant trait variation in urban versus rural microclimate for the model species Veronica persica.

Urban environments are warmer than the rural surroundings, impacting plant phenotypic traits. When plants are present over areas with contrasted conditions such as along urbanization gradients, their phenotypes may differ, and these differencesdepend on different processes, including phenotypic plasticity, maternal environmental effects and genetic differentiation (local adaptation and/or genetic drift). Successful establishment of alien species along environmental gradients has been linked to high phenotypic plasticity and rapid evolutionary responses, which are easier to track for species with a known residence time. The mechanisms explaining trait variation in plants in urban versus rural microclimatic conditions have received little attention. Using the alien Veronica persica as model species, we measured leaf traits in urban and rural populations and performed a reciprocal common-garden experiment to study how germination, leaf, growth, and flowering traits varied in response to experimental microclimate (rural or urban) and population origin environment (rural or urban). Veronica persica displayed phenotypic plasticity in all measured traits, with reduced germination, development, and flowering under urban microclimate which suggests more stressful growing conditions in the urban than in the rural microclimate. No significant effect of the rural or urban origin environment was detected, providing no evidence for local adaptation to urban or rural environments. Additionally, we found limited signs of maternal environmental effects. We noted the importance of the mother plant and the population identities suggesting genetically based differences. Our results indicate that urban environments are more hostile than rural ones, and that V. persica does not show any adaptation to urban environments despite genetic differences between populations.

Sexuality of pregnant, postpartum and breast-feeding women

IntroductionPregnancy and breast-feeding represents a period of psychological maturation for the woman who becomes a mother, a period of significant changes in women’s lives that affects their sexuality and intimacy.ObjectivesTo investigate the quality of sexual function in pregnant, postpartum and breastfeeding women.Methods It was a cross-sectional study established over a period of 3 months from the June 1st, 2023 to August 31, 2023. This study focused on a population of pregnant, postpartum and breastfeeding women recruited from outpatient consultations and inpatient of the obstetric gynecology department at the university hospital of Gabes. We used a pre-established sheet exploring socio-demographic data, medical and gyneco-obstetric history and informations concerning the marital relationship and the woman’s sexual activity. We administered the validated Arabic version of the Arizona Sexual Experiences Scale (ASEX) to assess sexual functioning.Results Fifty-eight women were included. The average age was 35.6±5.5 years, they had a university level in 40%, secondary in 37.5%, and they were unemployed in 74.2%. From an urban origin in 75%. They were pregnant in the first, second and third trimester in (15.6%, 15.6% and 25% respectively). They were in postpartum in 43.8% of cases with a cesarean delivery in 73.3% and breastfeeding in 56%. All women reported being on good terms with their spouses and satisfied with their sexuality. The usual frequency of sexual relations (SR) was (1/day: 22.6%, 1/week: 74.2%, 1/month: 3.2%) and 25% reported wanting to reduce the frequency. Only 3.44% masturbated and 5.17% had sexual fantasies. The mean ASEX score was 13 ± 4.3 and 47%of the sample had sexual dysfunction. We found a significant association between the sexual dysfunction and the trimester of pregnancy (p=0.045).Highest score of sexual dysfunction during the first and third trimester compared to the second one (68.9%, 77.6% and 22.4% repectively). The areas of sexual dysfunction were difficulty reaching orgasm (81%), impaired sexual desire (65.5%), insufficient lubrication (60.3%), arousal (55.1%) and pain on penetration (50%).ConclusionsWe found that sexual function is problematic among women during pregnancy especially in the first and third trimester also in postpartum and breastfeeding period. So what factors are associated with this sexual dysfunction?Disclosure of InterestNone Declared

Body satisfaction and sexuality in pregnant and postpartum women

IntroductionPregnancy and postpartum is an important life event associated with profound physiognomic and psychosocial changes affecting the female body in all its physiological, psychic and affective reality. It might influence the sexual function in expectant mothers.ObjectivesTo investigate the relationship between the body satisfaction and perception and the sexual function among pregnant and postpartum women.MethodsIt was a cross-sectional study established over a period of 3 months from the June 1st, 2023 to August 31, 2023. This study focused on a population of pregnant and postpartum women recruited from outpatient consultations and inpatient of the obstetric gynecology department at the university hospital of Gabes. We used a pre-established sheet exploring socio-demographic data, medical and gyneco-obstetric history, the body mass index (BMI) and informations concerning the marital relationship and the woman’s sexual activity. We administered the validated Arabic version of the Arizona Sexual Experiences Scale (ASEX) to assess sexual functioning and we used the body satisfaction and global self-perception questionnaire (QSCPGS) to explore the body satisfaction and perception.ResultsFifty-eight women were included. The average age was 35.6±5.5 years; they were from an urban origin in 75%. They were pregnant in the first, second and third trimester in (15.6%, 15.6% and 25% respectively). They were in postpartum in 43.8% of cases with a cesarean delivery in 73.3% and breastfeeding in 56%. All women reported being on good terms with their spouses and satisfied with their sexuality. The usual frequency of sexual relations was (1/day: 22.6%, 1/week: 74.2%, 1/month: 3.2%) and 25% reported wanting to reduce the frequency. The mean ASEX score was 13 ± 4.3 and 47% of the sample had sexual dysfunction. For the total score of the QSCPGS, we observe a mean value of 33 ±28.3, which means that our sample has a good level of positive body satisfaction and self-perception. The mean value of the “body satisfaction” factor is higher (23.7 ± 10.4) than the mean value of the “self-perception” factor (11.4 ± 14.3). The mean value of BMI was 28.74 ± 4.4 wich means an overweigh. We found a significant association between the “body satisfaction” factor and the sexual dysfunction (p=0.03), insufficient lubrication (p=0.01) and difficulty reaching orgasm (p=0.001).ConclusionsWe found that body and physical changes among pregnant and postpartum women can negatively affects their body perception and it might deteriorate its global sexual function. Further researches are recommended to study other potential factors affecting sexual function during this period.Disclosure of InterestNone Declared

Land use legacies affect early tropical forest succession in Mexico

AbstractQuestionsAgricultural expansion is one of the dominant drivers of forest and biodiversity loss, and shifting cultivation is the most widely used form of agriculture in many tropical forest regions. Where forests have been cleared, they have the potential to recover once the land is abandoned. However, legacies of land use are often overlooked in successional studies, and a deeper understanding of this legacy effect is needed to define efficient restoration practices using natural or assisted regeneration. Here, we analysed how land‐use history affects soil properties and early succession on abandoned agricultural fields in two contrasting Mexican socio‐ecological systems.LocationMexico, Oaxaca and Chiapas.MethodsWe sampled soil and monitored vegetation for 2 years after agricultural abandonment, and interviewed landowners about their land‐use practices.ResultsLand‐use practices were clearly influenced by landowners’ social context (residence time, rural or urban origin), and topography and soil type also constrained or facilitated land‐use practices. Soil characteristics were strongly affected by three land‐use practices: mechanical tillage decreased soil N and K; frequent herbicide and pesticide use increased N and K; and for pasture systems, stocking density increased soil bulk density and decreased pH and N. High‐intensity land management practices, specifically use of machinery, had the highest impact on early forest succession. When machinery was not used, the frequency of land‐use practices, particularly weeding frequency, is the main factor influencing tree cover and sapling diversity.ConclusionsTo facilitate post‐agricultural forest recovery, we recommend restoration efforts using natural regeneration in areas with low previous land‐use intensity and frequency.

Domestic violence in Tunisia: which forms of physical violence?

IntroductionDomestic violence is a universal phenomenon that destroys the fabric of society and threatens the lives, health and prosperity of all.It can take different forms, including physical abuse. This is one of the most serious form of violence, as it can range from a simple shove to homicide.ObjectivesTo determine the prevalence and describe the various forms of physical violence perpetrated by husbands against their wives.MethodsWe contacted women who consulted at the psychiatric emergency of ‘Hedi Chaker hospital’,Sfax examined in the context of medical expertise on the period between May 2021 until January 2022.A questionnaire regarding the violence was asked to responders. It included a section for collecting socio-demographic and clinical data on the woman, and a section for assessing the various forms of domestic violence.Results122 women were surveyed. The average age of victims was 35.66 years with extremes of 18 and 64 years. 78.7% (n=96) of ladies were of urban origin. The majority of them (44,3%) had secondary level education.The half of the population (51.6%) had an average socio-economic level and 43.4% (n=53) lived in rented houses.All the women of our population were married: it was the first marriage in (89.3%) and the majority (86.1%) had children.Almost all women (95.1%; n=116) were victims of physical violence.Different types of physical violence were reported with decreasing prevalence: slap (65,6%), punch (58,2%), strangle (46,7%), kicking (38,1%), stabbing threat (28,7%), kidnapping (4,9%), and gun threat (3,3%).Should be noted that some women experience different forms of violence simultaneously.ConclusionsOur study showed a high prevalence of physical violence with different shapes.These figures must be taken into account by the authorities given the gravity of physical and psychological consequences of this form of violence.Disclosure of InterestNone Declared

Long-Term Disability Outcomes in Relapsing-Remitting Multiple Sclerosis Patients: Impact of Clinical and Demographic Factors on Disease Progression.

Background: Multiple sclerosis (MS) is a prevalent chronic inflammatory and neurodegenerative disease of the central nervous system. The main evolving forms, relapsing-remitting MS (RRMS) and secondary progressive MS (SPMS), lack clear delineation. Methods: We conducted an observational study on 523 Caucasian RRMS patients receiving first-line disease-modifying therapies (DMTs), analyzing demographic, clinical, and geographical data. Results: RRMS patients experienced a statistically significant reduction in relapse rates post-DMT initiation. Significant differences in time to reach an Expanded Disability Status Score (EDSS) of 3.0 and 6.0 were observed based on demographics and onset topography. Kaplan-Meier analysis revealed that the onset with optic or supratentorial symptoms is linked to a longer time until EDSS = 3.0 is reached. Urban origin correlated with a prolonged time until EDSS = 3.0. Gender and environment showed no significant associations with the hazard of reaching an EDSS = 6.0. Cox regression analysis revealed no significant impact of relapses on the time to reach EDSS scores of 3.0 and 6.0 in our study cohort. Conclusions: Multivariate analysis identified several predictive factors for disability progression, including environment, age at onset, and disability level at DMT initiation.

(179) Sexual Dysfunctions in Infertile Tunisian Women

Abstract Introduction Once perceived as a source of pleasure and enjoyment, sexuality has evolved for infertile couples, focusing primarily on a purely procreative objective. Infertility has a direct impact on a woman's sex life, calling into question her femininity and causing significant alterations in the components of her sexual response. Objective The aims of our study were to assess the frequency of sexual dysfunction in Tunisian women facing infertility and to identify the aspects of their sexuality most affected. Methods This was a prospective, cross-sectional, and descriptive study, including a sample of 200 Tunisian infertile women, followed up in a Tunisian Assisted reproduction center over a three-month period, from November 24, 2022 to February 24, 2023. To assess the different dimensions of sexuality in infertile women, we used the Arabic version of the FSFI (female sexual function index) Results The mean age of our women was 30 ± 4 years. The majority had a university educational level (80%), an urban origin (87%), an average socio-economic level (63%), and no medical or gynecological surgery history (62%). Most partners (67%) had no sexual dysfunction (SD). The most frequent male SD was premature ejaculation, observed in 14% of cases. As regards the etiology of infertility, most cases were classified as unexplained (28%), while the remainder were linked to female causes, dominated by PCOS (40%). The majority of women had initially discussed the subject of sexuality (72%) with their partners. In our sample, the mean FSFI score was 20.74, with extremes ranging from 2 to 35.4. The prevalence of female sexual dysfunction (FSD) was 82%. The areas most affected were sexual satisfaction (50%), reaching orgasm (45%), as well as lubrication (44%) and arousal (44%). Lower educational level, secondary infertility, contraceptive use, and a long history of fertility treatment as well as the presence of sexual dysfunction in the male partner, were found to be associated with sexual dysfunction in women suffering from infertility, yet no significant correlation was established. Conclusions Infertility is associated with high rates of sexual dysfunction. Thorough counseling and continuing support of infertile women is therefore indicated. Disclosure No.

P195 Prevalence and factors associated with fatigue in patients with inflammatory bowel disease

Abstract Background Inflammatory bowel disease (IBD) is a group of pathologies characterized by symptoms that can be distressing and incapacitating. Fatigue is one of the complaints most frequently reported by patients. However, few studies have analyzed the determinants of fatigue in IBD. The aim of our work is to estimate the prevalence of fatigue, and to identify the factors associated with it in IBD patients. Methods Fatigue and nine other dimensions of IBD-related disability were assessed in a cross-sectional survey, including patients followed and hospitalized between March and September 2023, using the IBD-Disk questionnaire. Fatigue and severe fatigue were defined by an "Energy" sub-score > 5 and > 7 respectively. The correlation between Energy and the other IBD-Disk items was analyzed using Pearson's correlation coefficient. Determinants of fatigue were assessed using the Chi-2 test and multinomial logistic regression. Results We included 166 patients, 53.6% were men, and 69.3% were Crohn's disease carriers. Mean age was 39 ± 12.7 years. More than two-thirds (69.9%) lived in urban areas. IBD was active in 48.8% of cases. A total of 59% of patients were on biotherapy for maintenance treatment. The mean IBD-Disk total score was 36.4 ± 21. The Energy subscore obtained the highest score (4.9 ± 2.9). The prevalence rates for fatigue and severe fatigue were 42.2% and 22.9% respectively. Significant correlations were observed between fatigue and all other dimensions of IBD-related disability assessed by the IBD-Disk (p<0.001). The strongest correlations were observed between fatigue and defecation regulation (r=0.642), fatigue and work and study (r=0.630), and between fatigue and sleep (r=0.620) (Table 1). In univariate analysis, factors significantly associated with fatigue and severe fatigue were female gender (p=0.040 and 0.047 respectively), disease activity and hospitalization (p<0, 001 each), anemia (p=0.005 and 0.014 respectively), elevated CRP (p<0.001 and 0.030 respectively), hypoalbuminemia (p<0.001 and 0.042 respectively) and absence of biotherapy treatment (p=0.02 and 0.01 respectively). Living in an urban area was also associated with fatigue (p=0.015). In multivariate analysis, the independent risk factors predictive of fatigue were female gender, urban origin, hospitalization at the time of interview, and clinical disease activity. Independent risk factors for severe fatigue in multivariate analysis were female gender and clinical disease activity (Table 2). Conclusion The causes of fatigue are multiple and go beyond the clinico-biological elements associated with IBD, also encompassing social, geographical and sleep disturbance aspects. This underlines the need for a holistic approach to the management of IBD patients.

Beyond the Books: COVID-19's Influence on Future Life Behaviors of Aspiring Medical and Health Professionals.

The lifestyle of most people was forced to change due to the COVID-19 pandemic. Perhaps after the pandemic, we will find that these subtle changes in life and from the depths of our hearts are thorough and profound. They may form our conceptual consensus and behavioral habits, becoming part of our long-term personal consciousness. This study explored the impacts of the COVID-19 pandemic on the future life behavior intentions of medical and health-related students studying at universities in China. Electronic questionnaires were distributed to students studying at 3 universities in China. A total of 251 valid questionnaires were obtained, and the chi-squared test was used to compare the corresponding groups. In the future, students plan to pay more attention to wearing masks and maintaining social distance in public places, do more online shopping, have more meals at home or in the canteen, engage in less international travel, and have fewer gatherings with friends. However, compared with Chinese students, more non-Chinese students plan to increase domestic and international travel and reduce online learning. Furthermore, only among non-Chinese students did gender, urban or rural origin, and family economic conditions influence how the COVID-19 pandemic affected their future life behaviors. The COVID-19 pandemic changed the future life behavior intentions of medical and health-related students. The future behaviors of these students will impact the entire society. This study will help the government and policymakers predict and prepare for general lifestyle changes in our society.

Mechanism of impact of the built environment of urban rail transit origin and destination stations on network ridership during peak hours

Mechanism of impact of the built environment of urban rail transit origin and destination stations on network ridership during peak hours

Onsite wastewater treatment systems are a major source of pharmaceutical products in surface water of peri-urban/rural areas

Most of the published studies on pharmaceutical products (PhPs) focus on their occurrence in the influent/effluent at wastewater treatment plants (WWTPs) in urban areas with high population density. In peri-urban/rural areas not collected to any WWTP, despite the lack of sewage collection, and often (poor) on-site treatment, data on PhPs occurrence in surface water bodies is scarce. In this study, we investigated the impact of onsite wastewater treatment systems on the occurrence of six PhPs, along with hydrological and hydrochemical data, in the drainage network of a peri-urban/rural area in Italy.Our results, along with data from other studies, show onsite treatment systems are a major source of PhPs. In the drainage water 76% of the analyses positively quantified the presence of PhPs, with carbamazepine and clarithromycin always quantifiable, even in scarcely inhabited areas, at generally higher concentrations of PhPs than those reported in previous studies. As a result, onsite treatment systems may cause ubiquitous, even if at low concentrations, PhPs occurrence in the aquatic systems.In order to allow data comparison, studies reporting PhPs environmental concentration values should clearly detail the urban /environmental setting (population density, presence of WWTPs) and the hydrological/hydrochemical conditions. Furthermore, the joint use of hydrochemical parameters and PhPs data may provide useful proxies for the occurrence of PhPs or to identify nitrate sources of urban origin. Discharge, T, EC and ORP values may help understanding relevance of mixing and, then, the importance of dilution processes in reducing PhPs concentration.The occurrence of PhPs in surface water has to be duly considered in order to protect the aquatic ecosystems and groundwater, and the use of such water for safe irrigation purposes. Further treatment trains based on the concept of nature-based solutions (i.e, vegetated channels, artificial wetlands) could constitute a valuable solution exploiting the soil–water-plant continuum around main residential areas in order to enhance degradation processes.

MIGRATION OVER THE LIFE COURSE AND LATER-LIFE DEPRESSION IN CONTEMPORARY CHINA

Abstract Migrating between rural and urban areas over the life course profoundly shapes the conditions of later life. In the Chinese context, living in urban areas with an urban Hukou is associated with socioeconomic advantage. This study is among the first attempt to investigate how migration into urban areas in China is related to these processes and the association with risk of depression in later life by focusing on the timing and the type of migration (rural-urban residential mobility and/or institutional transition of Hukou status) of migration. Using data from China Health and Retirement Longitudinal Study, we found strong associations between migration over the life course and risk of depression in later life in China. The timing and type of migration appears to play an important role. In-situ urbanisation is associated with lower depression scores in later life, and these effects are greater for in-situ urbanisation occurring in middle age compared with young adulthood. Forced urban-rural migration is associated with improved mental wellbeing. Formal social protection, particularly having a private pension, contributes substantially to the mental health advantage of social groups with an urban Hukou. Having an urban Hukou origin has an independent protective role in shaping mental wellbeing in later life in China, potentially partly due to the entitlement to a private pension attached to this status. When informal support has weakened in contemporary China, enhanced formal social protection in the form of adequate pensions should be put in place to mitigate structural inequalities associated with migration in old age.

Are rural firms left behind? Firm location and perceived job attractiveness of high-skilled workers

Abstract We conduct a discrete choice experiment to investigate how the location of a firm in a rural or urban region affects the perceived job attractiveness for university students and graduates and, therewith, contributes to the rural–urban divide. We characterize the attractiveness of a location based on several dimensions (social life, public infrastructure and connectivity) and vary job design and contractual characteristics of the job. We find that job offers from companies in rural areas are generally considered less attractive, regardless of the attractiveness of the region. The negative perception is particularly pronounced among persons of urban origin and singles. In contrast, for individuals with partners and kids this preference is less pronounced. High-skilled individuals who originate from rural areas have no specific regional preference at all.

Socio-demographic profile of medical students in Aotearoa, New Zealand (2016–2020): a nationwide cross-sectional study

ObjectiveTo determine the socio-demographic profile of all students enrolled to study medicine in Aotearoa New Zealand (NZ).Design and settingObservational, cross-sectional study. Data were sought from the Universities of Auckland and...

Urban Water Management Linked to WASH (SDG-6) of Greater Hyderabad City, India

The water planning of the Musi River sub-basin, a tributary of the river Krishna faces challenges of urban floods, drainage disposal, and irrigation deficiencies which must be addressed with the escalation of the demography of Hyderabad city. The river is of length 240km and lies in Telangana state of the basin area of about 11270km2 and is of urban origin and is the lifeline to Hyderabad City. The 21st-century status of the river is polluted and needs immediate rejuvenation. In the present case, the hydrologic model is structured using the Soil and Water Assessment Tool, ArcSWAT10.3.1, that builds up having an interface with ArcGIS 10.3.1, ERDAS IMAGINE to the DEM Data from Satellite origin (LISS-III RESOURCESAT-1), and SWAT Model to study the soil characteristics Musi Basin, Watershed delineation, HRU Analysis, slope delineation, and reclassification of the basin against Land use (LU). The bearing to the LU changes of the Musi and adjacent basins have been investigated during the years 2005-2006 and 2015-2016. The study has inferred that Sustainable Development Goal 6.1 (SDG) has been well attempted by the basin managers and administration but failed to achieve SDG (6-2) to have bearable portable quality drinking water, effective management of wastewater and ecosystems to protect the people of Hyderabad and its environment. The Water, sanitation and hygiene (WASH) for one million slum dwellers have been neglected. The model results infer that the sediment fluctuation is due to expansion and changes in the city, agricultural practices, and industrial establishments. Recommendations for effectively moderating floods, 100% sewage and septage disposals, and crop planning in the basin are discussed.

Assessing Medical Students' Preferences for Rural Internships Using a Discrete Choice Experiment: A Case Study of Medical Students in a Public University in the Western Cape.

As new graduates are crucial in providing healthcare services in rural areas, this study aimed to identify and describe the rural facility attributes that attract medical students to apply for rural internships. A literature review and focus groups informed a discrete choice experiment conducted amongst graduating medical students at one public university in South Africa. One main effect using a mixed logit model and another main effect plus interaction model was estimated. Females (130/66.33%) of urban origin (176/89.80%) with undergraduate exposure to rural facilities (110/56.12%) were the majority. The main effects only model showed advanced practical experience, hospital safety, correctly fitting personal protective equipment, and the availability of basic resources were the strongest predictors of rural internship uptake. Respondents were willing to forgo 66% of rural allowance (ZAR 2645.92, 95% CI: 1345.90; 3945.94) for a facility offering advanced practical experience. In contrast, increased rural allowance and housing provision were weak predictors of rural work uptake. Based on the interaction model, females and those not intending to specialise preferred hospital safety compared to advanced practical experience. To improve internship recruitment, rural facility managers should provide staff with supervision, safety, and protection from occupational exposure to contractible illnesses.

The atmospheric fate of 1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane (TBECH): spatial patterns, seasonal variability, and deposition to Canadian coastal regions

Abstract. Brominated flame retardants (BFRs) that are gradually being phased out are being replaced by emerging BFRs. Here, we report the concentration of the α- and β-isomers of 1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane (TBECH; also known as DBE-DBCH) in over 300 air, water, and precipitation samples collected between 2019 and 2022 using active air and deposition sampling as well as networks of passive air and water samplers. The sampling region includes Canada's most populated cities and areas along the St. Lawrence River and Estuary, Quebec, as well as around the Salish Sea, British Columbia. TBECH was detected in over 60 % of air samples at levels comparable to those of 2,2′,4,4′-tetrabromodiphenyl ether (BDE-47). Concentrations of TBECH and BDE-47 were typically higher in urban areas, with stronger correlations with population density during warmer deployments. Uniform α- / β-TBECH ratios across space, time, and environmental media indicate the highly similar atmospheric fate of the two isomers. Although TBECH air concentrations were strongly related to temperature in urban Toronto and a remote site on the east coast, the lack of such dependence at a remote site on the west coast can be explained by the small seasonal temperature range and summertime air mass transport from the Pacific Ocean. Despite there being no evidence that TBECH has been produced, or imported for use, in Canada, it is now one of the most abundant gaseous BFRs in the Canadian atmosphere. The recorded spatial and temporal variability of TBECH suggest that its emissions are not constrained to specific locations but are generally tied to the presence of humans. The most likely explanation for its environmental occurrence in Canada is the release from imported consumer products containing TBECH. Chiral analysis suggests that despite its urban origin, at least some fraction of TBECH has experienced enantioselective processing, i.e., has volatilized from reservoirs where it has undergone microbial transformations. Microbial processes in urban soils and in marine waters may have divergent enantioselectivity.

Effect of wood gasification biochar on soil physicochemical properties and enzyme activities, and on crop yield in a wheat-production system with sub-alkaline soil

Biochar may have beneficial effects on soil depending on its properties and pedoclimatic conditions. Highly sloping soils are prone to erosion and organic matter depletion, and biochar can be useful to restore soil fertility and quality, and crop yields. To test the effect of wood gasification biochar (WGB), we conducted a field experiment applying 0 and 60 Mg ha−1 of WGB only (no fertilizer) to a sub-alkaline and fine-textured soil under Mediterranean climate conditions. The effect of WGB on the soil physicochemical properties and on 12 enzyme activities involved in the C, N, P, and S cycles was monitored during a wheat-growing season along with its effect on grain yield. The results show that WGB was rather recalcitrant, and the application of a high dose of it had no effect on most of the soil physicochemical properties, enzyme activities and wheat grain yield. Since enzyme activities involved in the C cycle were similar in WGB-treated and not-treated soils, WGB failed to stimulate organic matter mineralization during the monitored period, with no contribution to N and P supply. Since WGB can contribute to soil C stock with no detrimental effects on wheat yield, wood gasification can allow recycling waste woody materials of urban origin to produce energy and return biochar back to agricultural soils. We suggest that future studies on WGB focus on the effect of its aging in soil on soil physicochemical and biochemical properties, and on crop performances.