Search Results (24)

Taiwan experiences abundant rainfall, but faces significant water shortages, making rainwater harvesting (RWH) a potential alternative water source. Additionally, extreme rainfall events strain urban flood control systems, highlighting the need for integrated stormwater management. To address these challenges, Taiwan mandates stormwater detention (SWD) in new buildings. However, the current RWH and SWD systems are designed independently, with no combined design guidelines available. This study proposes three combined RWH and SWD systems, series, parallel, and enhanced parallel with a valve using a passive release mechanism. System performance was evaluated through short-term and long-term simulations. Short-term simulations were conducted to ensure the system’s compliance with the domestic flood control design standards. These simulations assessed the peak flow mitigation and lag times for 5-, 10-, and 25-year design storms under four scenarios. Long-term simulations used historical rainfall data to analyze the differences in the combined systems and operational plans for continuous rainfall events. Three performance indicators—volumetric reliability, the stormwater retention ratio, and the stormwater detention ratio—were employed to assess water supply and the stormwater detention performance. The short-term simulation results revealed that the system performance was sensitive to the initial conditions. The series and parallel systems performed well, while the enhanced parallel system outperformed the others under specific initial conditions and valve operations. In contrast, long-term simulations revealed that the series and parallel systems achieved higher stormwater retention and a more stable performance than the enhanced parallel system. Among the three systems, the parallel system offers reduced installation space, lower costs, and easier maintenance, making it the recommended option for Taiwan. This study provides valuable guidance for designing combined RWH and SWD systems. Full article

The small Mediterranean islands, unique geographical places where coastlines and mountains converge due to volcanic genesis, are among the most threatened environments on Earth. Their marginality, which has historically led to their use as places of detention and punishment, coupled with the extreme climate and rugged geomorphology shaped by terracing practices, has resulted in the loss of systematic land management. This loss stems from the abandonment of cropland in favor of alternative activities and migrations, impacting essential ecosystem services such as the water cycle, soil fertility, and the cultural landscape. The need to counteract the land degradation in these vulnerable areas has been acknowledged for some Mediterranean small islands, including the UNESCO heritage site of Stromboli in the Aeolian Islands, Sicily, Italy—an especially captivating location due to its active volcano. The agricultural abandonment on terraces, intensively cultivated with olives groves and vineyards until the mid-20th century, has rendered the area highly fragile and susceptible to risks such as fires and soil erosion, particularly as a consequence of extreme weather events, as proven in 2022, which saw a destructive fire followed by storms. To mitigate the negative effects of hydrogeological disruptions, the implementation of integrated landscape management—managing ecosystems at the landscape level—has been proposed. Specifically, an agroforestry intervention, coupled with the restoration of dry stone walls, the shaping of soil slopes by recovering the traditional ecological knowledge (TEK), and the design of water-collecting devices incorporated with the traditional hydraulic knowledge, may be proposed as a strategic approach to minimize the soil erosion risks, adapt to climate change, and extensively restore the use of traditional agrobiodiversity to support the local economy and tourism. A pilot intervention by local stakeholders based on these principles is described as an emblematic agrobiodiversity-based landscape design project in a vulnerable area, aiming at the preservation of the cultural landscapes of the small Mediterranean islands. Full article

Infections in confined environments can spread by direct contact, contaminated surfaces, and airborne transmission. This is critical in prison facilities, where cleaning and sanitary conditions are inadequate. An alternative is the development of antimicrobial surfaces. A new antimicrobial coating was developed by incorporating copper microparticles into a standard commercial paint, aiming to reduce the concentration of bacteria on surfaces by granting antimicrobial properties to surfaces. The copper additive comprised Cu₂Cl(OH)₃ deposited on polyhedral zeolite. The efficacy of this coating was evaluated in detention cells in a police station, which are temporary prisons and inherently dirty environments. The experiment compared a cell painted with the copper additive coating and a control cell with the standard paint. Viable coliforms were measured on different surfaces and in the air for five months under normal usage. Bacterial load was reduced by ca. 68% by the copper-amended paint on cement surfaces. Surprisingly, airborne viable coliforms were reduced by ca. 87% in the detention cell treated with the copper coating. This research highlights the potential of antimicrobial coatings in controlling the spread of infections through contact with contaminated surfaces and emphasizes the significant reduction in airborne bacterial load. It is especially relevant for controlling infections where sanitization is limited but can be extended to other built environments, such as healthcare facilities. Full article

Information about flood-prone areas in Accra, Ghana, acting as obstacles to the main infrastructure was required as input for a transportation study. We successfully identified these areas using the hydrologic screening software Arc-Malstrøm. Earlier studies have used a digital elevation model with a spatial resolution of 30 m, which unfortunately is not a true digital terrain model as it includes elevations from ground surfaces, structures, and vegetation. However, this study shows the benefits of using a hydro-conditioned 10 m resolution digital terrain model from Airbus^TM in predicting flood-prone areas. The entire investigation area covers approximately 23% of the Greater Accra Metropolitan Area (GAMA), including the entire Odaw River basin. In this area, 5018 landscape sinks with water depths ≥ 0.1 m and volumes ≥ 5 m³ were identified. From this, 163 flood-induced roadblocks were found with maximum depths ≥ 0.3 m, rendering them impassable to normal vehicles. Beyond the adaptation of infrastructures in the hydro-conditioning process, more steps were necessary along the Odaw River’s southernmost course before its outlet into the Gulf of Guinea due to local trash accumulation reflected in the DTM. To address the unforeseen stochastic flood effects from trash piling up along the river channels, a simulation was conducted showing the upstream consequences caused by a trash barrier at the river’s outlet into the ocean. This leads to a discussion of the hazards posed by improper waste handling, coupled with increasing runoff predictions within the river’s drainage basin. Finally, we discuss local alternatives to the establishment of large central retention and detention basins to reduce flood-prone areas in GAMA during periods when stormwater-induced floods become more frequent, primarily due to uncontrolled urbanization increasing runoff volumes. Full article

New sustainable technologies have been explored as potential solutions to address the global issue of water scarcity by enhancing water treatment processes. In this context, an innovative coagulation/flocculation unit known as the helically coiled tube flocculator (HCTF) has emerged, offering notable advantages such as high process efficiency, short detention time, and cost-effectiveness compared to conventional hydraulic units. The HCTF harnesses its flow energy to disperse coagulation/flocculation agents and facilitate the formation of flocs through collisions between destabilized particles. This paper introduces an assessment of the process efficiency, geometric properties, and hydraulic characteristics of an alternative and sustainable water clarification system incorporating an HCTF, with the aim of determining its optimal length. In HCTFs, the flocculator’s length (referred to as L) can exert a significant influence on process efficiency, necessitating a comprehensive evaluation of this parameter for the rational design of such units. To accomplish this, the paper scrutinizes physical experimental findings from previous research articles, which are related to the efficiency of flocculation (indirectly estimated by analyzing turbidity removal efficiency). Additionally, it examines the geometric and hydraulic attributes across 48 distinct variations of HCTFs. This study culminates in the development of a model for determining the optimal length for HCTFs. Furthermore, it includes a probabilistic assessment that establishes a connection between the optimal length and other parameters involved in the clarification process—whether deterministic or probabilistic—and their impact on the final process efficiency, all with a 90% confidence level. This paper stands out by pioneering the determination of the optimal length of HCTFs, filling a gap in the existing literature, which previously only mentioned the importance of this parameter in process efficiency without providing a predictive model. The results highlight the robustness of the proposed alternative clarification system. Even in scenarios with substantial variations in dimensional hydraulic parameters (such as a worst-case relative standard deviation of 20%), the process efficiency fluctuations range between 1.3% and 5.2%. These outcomes lend support to the adoption of such alternative water clarification systems. They also underscore the potential of probabilistic evaluation as a valuable tool for investigating novel water and wastewater treatment units and enhancing existing ones. Full article

An important aspect of economic considerations is the routing and safety of hydraulic storage facilities such as dams for extreme probable water flooding. The routing of dam reservoirs requires more attention for determining the magnitude of extreme probable flooding. Apparently, the type of structure, importance, and economic development of the surrounding area guide the routing criteria for choosing the extreme flood magnitude. The Maithan and Panchet Dams in India have faced several major floods with diversified magnitudes since 1978. The present study aims to estimate the storage and routing of extreme probable floodings for these two dams based on real-time flood data like inflow, outflow, and elevation for the extreme flood years of 1978, 2009, and 2014. Reservoir storages at different elevations are calculated from the initial storage volumes. For both reservoirs, discharge equations are derived and calculated at given elevations during extreme floods. The Modified Puls technique is used for routing extreme floods. At the end of each extreme flood in 1978, 2009, and 2014, the variation in outflow discharges at different elevations and flood hydrographs is predicted. Finally, estimated outflow discharges are compared with the actual outflow discharges for the given inflows during extreme floods. Using this approach, extreme floods that occurred in 1978 are predicted with less than 10% error. Outcomes from this study may help in the future planning and routing of flood-control detention facilities and in predicting the variation in outflow discharges at different elevations. Based on this work, alternative studies and regional drainage planning can also be carried out. Full article

As a result of the Kakhovka dam explosion, a huge area of soil was contaminated with toxic organic waste of various origins. The sustainability of soil ecosystems affected by floods requires effective approaches to eliminate the consequences as quickly as possible. Therefore, the goal of this work was to study the efficiency of the application of granular microbial preparation (GMP) and silicon dioxide preparation Analcime for the degradation of toxic organic waste to restore the soil after floods as well as man-made and natural disasters using model ecosystems. It is based on the combination of microbial fermentation of organic waste via GMP, improvement in soil quality via silicon dioxide preparation Analcime (Na[AlSi₂O₆]·H₂O), followed by the application of phytoremediation methods for affected soil bioremediation. Such parameters as time detention (Td) and degradation coefficient (Dc) served to estimate the efficiency of organic waste degradation. The detoxification efficiency was determined via growth inhibition coefficients of indicator plants. The coefficient of waste degradation (Dc) via GMP was four–eight-fold higher compared to untreated variants and ranged from 35.1 to 41.8. The presence of methane in the variants of the experiment with GMP indicated the complete degradation of solid waste to final non-toxic products. The addition of GMP and Analcime enhanced the viability and antioxidant protection systems of seedlings of test plants (Cucumis sativus «Konkurent» and Amaranthus caudatus L.). The proposed approach is promising to be applied in the polluted sites of Europe or Asia for soil treatment as well as alternative energy obtaining. Full article

Background: In France, addiction care in prison usually consists of nurses’ interventions, medical care and socio-educational programs, but new alternatives have arisen, namely the therapeutic community (TC) model. This pilot study aims to evaluate the effectiveness of this prison-based TC in comparison with classic and socio-educational care offered in French prisons. Methods: To compare these three types of prison-based care, two detention centers’ files were screened for use of multiple drugs, willingness to participate and absence of psychiatric comorbidities incompatible with group therapy. A custom questionnaire was built based on the fifth version of the Addiction Severity Index. It investigates medical status, employment and support, primary addiction status, legal status, social/familial status and psychiatric status through various items. Results: Our sample only consisted of male repeat offenders with a mean age of 37.7 ± (9.1) years. Primary addiction status improvement was observed for all care studied but was more important in TC than in classic care. Self-esteem and social/familial status saw significant improvement throughout TC care. Conclusions: The TC model represents an alternative to classic and socio-educational care in French prisons. More studies are needed to assess the extent of the benefits provided on both the medical side and economic side. Full article

Obstetric violence has been recognized as a major impediment to facility-based delivery, increasing the risk of preventable complications and maternal mortality. In Ghana, studies on women’s birth experiences reveal enormous and brutal acts of violence during delivery; however, inquiries into why midwives abuse women have not been extensively studied. This study explored the perspectives of midwives on the drivers of obstetric violence in the Western and Ashante Regions of Ghana. A qualitative study was conducted involving 30 in-depth interviews with midwives in eight health facilities. The data were analyzed thematically using NVivo 12. The results of the study reveal a normalization of violence in the delivery room and the intensity of violence is heightened during the second stage of labor. Midwives reported perpetrating or witnessing physical violence, abandonment of women, stigmatization of HIV women, verbal abuses such as shouting, and the detention of women in the health facilities. Midwives abuse women as a result of the pressures of the midwifery profession, poor maternal efforts of women, disrespect of midwives, women’s disobedience, and uncooperative attitudes. The culture of acceptability of obstetric violence is a major driver, contributing to its normalization. Midwives do not consider obstetric violence as abuse, but rather, as a delivery strategy which aids a successful delivery. It is therefore justified and viewed as a necessary part of the delivery process. There is a critical need for retraining midwives on alternative birthing strategies devoid of violence. Full article

Reflecting the focus of this Special Issue on “Rule of Law and Human Mobility in the Age of the Global Compacts,” this article contributes to the discussion on the threats to the rule of law posed by immigration detention through the lens of the Global Compact for Safe, Orderly and Regular Migration (GCM). In GCM’s Objective 13, states committed to use immigration detention only as a measure of last resort, work towards alternatives and draw from eight sets of actions to realise this commitment. Given the attention the GCM attracts, its nonbinding character and the voluntary nature of its review can be used by states as justification for their inadequate implementation of binding human rights obligations and insufficient reporting on implementation to the supervising bodies. While acknowledging these challenges to the rule of law, this article explores the ways the GCM can actually foster the rule of law in the area of immigration detention. To strengthen the rule of law principles of legality, legal certainty, prohibition of arbitrariness, access to justice and the right to an effective remedy, Objective 13 needs to support a binding human rights regime by preventing arbitrary detention and its implementation at the domestic level. The article discusses the interplay between Objective 13 on the one hand, and, on the other, the International Covenant on Civil and Political Rights, International Convention on the Protection of the Rights of All Migrant Workers and Members of Their Families and Convention on the Rights of the Child at three levels—the detention provisions, the support provided to states for the implementation of these provisions and the monitoring of states’ implementation—and it proposes means to strengthen the synergies between the two frameworks. Full article

Many women in detention are mothers and often the sole caregivers of their children. Italy, as most European countries, allows mothers to keep their children with them in detention, with the aim of preserving the fundamental bond between mother and child. Since prison does not seem to provide a good environment for the child’s growth, there are different alternative residential solutions, such as Group Homes. The aim of this preliminary study was to explore the differences between mothers living in detention through alternative measures with their children and mothers who are not detained regarding parenting stress, child behavior from the parent’s perspective, and maternal attachment. Twelve mothers were enrolled in this study, divided equally between the detained and the control groups. Both groups’ participants completed a three-questionnaire battery in order to assess parenting stress, child’s behavior, and maternal attachment. The analyses of variance showed significant differences between the two groups, with the detained group reporting higher scores than the control group in almost all the subscales of parenting stress. The results highlighted that imprisoned mothers might experience more stress than the general population. There is a need to design intervention programs to support parenting in detention. Full article

Delinquent behaviour is predominantly an expression of adolescent developmental phases, but at the same time a possible entry into criminal careers. Where socio-educational measures and admonitions no longer help, society reacts with youth detention and imprisonment as a last resort, in doing so it brings the young people into an environment of violence and power. The concept of the socio-educational pilgrimage as an alternative measure to imprisonment takes the young people out of this context and offers space for reflection and self-efficacy. In this article, different concepts of Learning Walks for young offenders are discussed and theoretically analysed. Full article

Urban drainage systems are in transition from functioning simply as a transport system to becoming an important element of urban flood protection measures providing considerable influence on urban infrastructure sustainability. Rapid urbanization combined with the implications of climate change is one of the major emerging challenges. The increased concerns with water security and the ageing of existing drainage infrastructure are new challenges in improving urban water management. This study carried out in the Seixal area in Portugal examines flood risk analyses and mitigation techniques performed by computational modelling using MIKE SHE from the Danish Hydraulic Institute (DHI). Several scenarios were compared regarding flood risk and sustainable urban drainage systems (SuDS) efficiency. To obtain a more accurate analysis, the economic viability of each technique was analyzed as well through (i) life cost analysis and (ii) taking into account the damages caused by a certain type of flood. The results present that the best scenario is the one that will minimize the effects of great urbanization and consequently the flood risk, which combines two different measures: permeable pavement and detention basin. This alternative allows us to fully explore the mitigation capacity of each viable technique, demonstrating a very important improvement in the flood mitigation system in Seixal. Full article

Past research shows that crises reveal the sensitive spots of established ideologies and practices, thereby providing opportunities for social change. We investigated immigration control amid the pandemic crisis, focusing on potential openings for both challengers and proponents of immigration detention. We asked: How have these groups responded to the pandemic crisis? Have they called for transformative change? We analyzed an original data set of primary content derived from immigrant advocates and stakeholders of the immigration detention industry. We found as the pandemic ravaged the world, it did not appear to result in significant cracks in the industry, as evidenced by the consistency of narratives dating back to pre-pandemic times. The American Civil Liberties Union’s (ACLU) criticisms of inhumane conditions in immigration detention resembled those from its pre-pandemic advocacy. Private prison companies, including CoreCivic and GEO Group, emphasized their roles as ordinary businesses rather than detention managers during the pandemic, just as they had before the crisis. U.S. Immigration and Customs Enforcement (ICE), however, manufactured an alternative storyline, emphasizing “COVID fraud” as the real threat to the “Homeland.” Although it did not call for radical change, it radically shifted its rhetoric in response to the pandemic. We discuss how these organizations’ indifference towards structural racism contributes to racial apathy and how the obliviousness and irresponsibility of industry stakeholders resembles white ignorance. Full article

Immigration Detention is a patchwork of public and private correctional facilities overseen by ICE, a federal enforcement agency. In June 2021, ICE detained 16,460 adults in 121 facilities in 38 states, frequently alongside pretrial and sentenced inmates and U.S. Marshals Service prisoners, under varying conditions ICE established with five different sets of detention standards, all of them based on corrections case law and in effect today. Detainees have not fared well in ICE’s custody, especially during the pandemic. In CY2020, ICE processed 137,749 detainees, tested only 80,200 for COVID-19 (58%), and recorded 8622 positive cases (11%) at over 100 facilities. Most testing positive for COVID-19—7687 (89%)—contracted the virus in ICE custody, including eight detainees who died. An additional 14,728 detainees (18%) had one or more conditions placing them at high risk for severe illness due to COVID-19 of which ICE only released 5801 (39%). This paper utilizes ICE data and documents on government websites to evaluate ICE’s approach to detention management and explore its impact on conditions of detention and how it impeded its readiness and response to the pandemic. It concludes with recommendations that ICE decrease reliance on detention and decriminalize its policies and practices. Full article