Search Results (1,037)

Neosporosis, caused by N. caninum, is an emerging protozoan disease responsible for significant economic losses in the global dairy and meat industries, primarily due to abortion in cattle. Dogs serve as both definitive and intermediate hosts and play a key role in the parasite transmission cycle. Currently, effective control strategies remain limited, partly due to insufficient information on infection status. In Vietnam, data on N. caninum infection are scarce and mainly limited to cattle and buffalo. In this study, an indirect enzyme-linked immunosorbent assay (iELISA) based on recombinant NcGRA4 protein was applied and evaluated for the detection of anti-N. caninum antibodies in dogs. A total of 142 shelter dogs from Hanoi, northern Vietnam, were tested to determine seroprevalence. The NcGRA4-based iELISA detected an overall seroprevalence of 28.87% (41/142), whereas the indirect fluorescent antibody test (iFAT) showed a lower prevalence of 14.08% (20/142), indicating substantial exposure to N. caninum among shelter dogs in this region. Using iFAT as the reference method, the NcGRA4-based iELISA demonstrated a sensitivity of 90.00%, a specificity of 81.15%, and an overall accuracy of 82.39%. These findings indicate that the NcGRA4-based iELISA is a suitable screening tool for seroepidemiological surveillance of N. caninum infections in dogs. Univariable and multivariable logistic regression analyses showed no significant associations between N. caninum seropositivity and the investigated variables, including age, sex, breed, and housing conditions. This study also provides the first serological evidence of canine exposure to N. caninum in Vietnam. Full article

This article investigates the housing precarity of EU migrant workers in the Dutch–German border region, focusing on the Venlo Greenport area. Drawing on documentary analysis, 28 interviews, field observations, and stakeholder engagement, it explores how local governance, market dynamics, and framing practices shape housing outcomes. While EU law guarantees free movement, housing remains excluded from the EU rights frameworks, leaving workers dependent on employer-linked or agency-controlled short-stay facilities. These arrangements—often overcrowded, surveilled, and formally temporary—become long-term solutions, producing what we term short-stay sedentarism: prolonged residence in housing designed to deny permanence. The study conceptualises the local “battleground” where municipalities, employers, housing providers, NGOs, and residents negotiate competing interests. Seven interpretive frames—nuisance/disorder, cowboys, human rights, NIMBY, shadow power, integration, and unwanted accumulation—structure these debates, legitimising certain strategies while obscuring structural deficiencies. Findings reveal that certification and enforcement, while intended to improve standards, often entrench precariousness by sustaining the short-stay model. Emerging integration-oriented policies signal a shift but remain fragile amid economic imperatives and spatial constraints. The paper argues that addressing housing precarity requires structural reforms: expanding access to regular housing, reducing employer dependency, and recognising migrant workers as long-term residents rather than temporary labour inputs. Full article

Global poultry production continues to expand rapidly to meet the growing demand for affordable and high-quality animal protein. However, this growth raises pressing concerns about environmental sustainability, natural resource use, and public health. Although current initiatives, such as improved housing systems, optimized feeding practices, and partial soybean meal substitution, have helped mitigate some impacts, comprehensive integrated solutions remain underexplored. This review synthesizes emerging nutritional and management innovations that enhance the sustainability of poultry production while maintaining profitability. It addresses three central research questions: (1) Which alternative feed ingredients most effectively preserve animal performance while minimizing environmental burdens? (2) How can environmental management practices enhance resource efficiency and waste valorization? (3) What roles do life cycle assessment methodologies and policy frameworks play in advancing sustainable poultry systems? Evidence from 100 peer-reviewed studies, industrial data, and field analyses reveals that incorporating insect meals, algae, and agro-industrial by-products can reduce dependence on soybean meal by 20–40% and improve feed efficiency by 5–12% across various poultry production systems. Furthermore, integrating environmental management strategies, such as manure valorization, efficient water and energy use, and the adoption of renewable energy, substantially reduces greenhouse gas emissions and promotes circular economic principles. Life cycle assessment studies confirm that combined dietary and management interventions yield greater reductions in carbon footprint than isolated measures. Future research should focus on optimizing interactions among feed strategies, environmental management, and policy frameworks through digital technologies, nanomaterial-based feed additives, and region-specific sustainability plans to accelerate the transition toward resilient, climate-smart poultry production systems. Full article

Additive manufacturing in construction is expanding production possibilities for housing, however its integration into architectural design workflows remains limited. This research proposes a computational workflow for the early-stage form-finding of housing volumes intended for additive construction. A parametric design system was developed to generate a wide range of residential volumetric configurations based on geometric parameters derived from conventional housing typologies and emerging 3D-printed construction practices. The design space was explored through user-driven experimentation and automated evolutionary optimization targeting predefined surface area conditions. Besides design alternatives were visualized using AI-assisted image generation to support comparative evaluation, translated into BIM models for further architectural development, and tested through physical 3D-printed scale models to assess material expression and constructability. Five design exploration activities involving architects and graduate students produced nearly 200 volumetric alternatives, in order to review its use and possibilities. The results show that the parametric system enables efficient exploration of both conventional and novel housing forms potentially compatible with additive construction. Vertically articulated volumes with curved envelopes and spatial variation emerged as promising alternatives. The study demonstrates the potential of integrating parametric modeling, evolutionary search, AI-assisted visualization, and physical prototyping to support architectural decision-making and facilitate the incorporation of 3D printing into housing design processes. Full article

This study critically engages the ongoing national conversation and policy discourse on land expropriation without compensation in South Africa, offering both analytical insight and a principled position. It presents a qualitative, normative-analytical inquiry grounded primarily in critical documentary analysis of legislation, jurisprudence, and land reform scholarship. The study situates the contemporary debate within South Africa’s broader historical and structural context, where patterns of land dispossession continue to shape persistent spatial inequality and exclusion. The analysis proceeds from the premise that meaningful urban spatial transformation cannot be realised without addressing the structural constraints embedded within existing land governance and spatial planning systems. In this regard, debates around land expropriation are not simply questions of property law or economic policy but are fundamentally connected to broader concerns of spatial justice, economic inclusion, and social equity. These concerns are particularly salient when considering emerging imaginaries of African urban futures, including the notion of the Pan-African City—an urban formation envisioned as spatially integrated, socially inclusive, and reflective of shared continental aspirations for equitable development. The central argument advanced in this study is that unless South Africa gives serious and programmatic attention to land expropriation—moving beyond token or partial policy measures—the structural conditions necessary for such inclusive urban futures will remain unattainable. In this sense, any vision of a Pan-African City within South Africa’s borders risks remaining short-lived, if not altogether specious. To fully engage this debate, the paper unpacks and interrelates the concepts of land expropriation, compensation, expropriation without compensation, economic inclusivity, social equity, spatial justice, and the Pan-African City. These concepts cannot be adequately understood independent of the distinctly South African context—a context shaped by a history of racialised dispossession, deeply entrenched spatial inequalities, and the limitations of both first-generation (restitution, redistribution, tenure reform) and second-generation (e.g., the Spatial Planning and Land Use Management Act) land reform initiatives. The point advanced is unequivocal: without resolving the land question, sustainable housing and human settlement solutions in South Africa will not materialise. Anything less risks entrenching a democratic façade atop an unresolved colonial, segregationist, and apartheid foundation. Full article

In recent years, the Turkish real estate market has emerged as a key driver of economic growth while simultaneously shaping the dynamics of social life. This study employs multivariate analysis methods to classify metropolitan cities and potential metropolitan candidate provinces that exhibit similarities in terms of housing market characteristics, based on 22 socio-economic and sectoral variables influencing the real estate sector. Additionally, the study identifies the metropolitan clusters to which the 10 candidate provinces structurally correspond within this classification framework. To achieve this, conventional classification techniques such as Decision Trees and K-Nearest Neighbors (k-NN) were integrated with artificial intelligence-based methods, including Random Forest (RF) and Support Vector Machines (SVM). The analysis resulted in the categorization of 40 metropolitan and candidate provinces into five distinct groups. Findings indicate that multivariate indicators capturing demographic, economic, and structural differences across metropolitan areas play a critical role in shaping the housing market and guiding strategic urban development decisions. Furthermore, the results highlight that determining metropolitan status solely based on population figures is insufficient and that a more scientific and comprehensive approach—grounded in a broader set of socio-economic and structural indicators yields more meaningful classifications. Full article

This study presents a comparative analysis of residential segregation among the three largest foreign-born populations residing in Spain: Moroccans, Romanians, and Colombians. Using data from Spain’s Population and Housing Census (INE), the research analyzed the segregation index across 34 urban areas in medium-sized cities. Three urban areas in Catalonia were selected for the intraurban case studies, and Pearson correlation coefficients were calculated for 60 sociodemographic variables. The objectives were to identify indicators that helped diagnose potential segregation contexts and to explore residential patterns by country of origin. The study was grounded in a central premise: the foreign-born population cannot be treated as a homogeneous group, as aggregation conceals group-specific inequalities and differentiated spatial configurations. The findings showed that segregation occurred. Moroccans exhibited the highest levels of segregation, which was associated with socioeconomic vulnerability and also a marked residential preference for central urban areas. Colombians displayed lower levels of segregation and greater territorial dispersion, pointing to broader residential access. Romanians presented intermediate and heterogeneous patterns, which combined localized concentrations with peripheral settlement. The results highlighted how intraurban differentiation emerged from interactions between different migrant profiles, housing opportunity structures, and urban morphology, providing an empirical basis on which to design targeted urban policies. Full article

Heat stress is a major constraint to global egg production, as rising temperatures increasingly challenge the physiological limits of commercial layer chickens. This review integrates current advances in stress physiology to demonstrate that heat stress is not merely a thermoregulatory problem but a multi-systemic disruption involving neuroendocrine overload, metabolic imbalance, oxidative damage, immune suppression, and gastrointestinal barrier breakdown. These interacting pathways collectively impair egg production, shell quality, feed efficiency, and hen welfare. The review also synthesizes emerging mitigation strategies across environmental control, nutritional interventions, genetic and breeding innovations, welfare-oriented housing systems, and precision monitoring technologies. Studies indicate that targeted cooling, antioxidant, and electrolyte supplementation, the selection of heat-tolerant strains, enriched environments, and sensor-based early-warning systems can significantly enhance egg-laying hen resilience. Remaining gaps include a limited understanding of multi-stressor interactions, microbiome-mediated thermal tolerance, and the large-scale implementation of precision tools. The review provides a forward-looking framework for improving heat resilience in modern layer systems. Full article

Background: Food insecurity is defined as having limited access to food, while nutrition insecurity is characterized as a lack of consistent access to affordable and acceptable foods that support health, manage or prevent disease, and meet daily nutritional needs. College students face increased risks of food and nutrition insecurity, yet the issue is understudied. This study examined the patterns of food and nutrition insecurity among students at a public university across main and regional campuses. Methods: We conducted a cross-sectional survey using Qualtrics for participant recruitment in November 2023. The USDA’s 10-item toolFood insecurity was measured using the USDA’s 10-item tooland housing security was measured using the U.S. Census Bureau’s National Survey of Income and Program Participation 6-item tool. We used ANOVAs and logistic regression to examine differences across demographics. Data analysis was done using SPSS version 29. Results: There were 6538 student responses. Of these, 36% of students were food insecure, while 20% were nutritionally insecure. Comparatively, food and nutrition insecurity were significantly higher among students with low-income (p < 0.001), housing instability (p < 0.001), a higher number of dependents, and those indicating that they were single/unmarried (p = 0.005), first-generation (p < 0.001), and Pell grant eligible (p < 0.001). Annual income and housing security emerged as significant predictors: lower income was approximately twice as likely to be associated with food insecurity, while those reporting housing insecurity were six times more likely to experience food insecurity. Conclusions: The study findings reveal disparities in food and nutrition insecurity among a diverse student population at a public university. Addressing the issue among them is crucial and requires a multifaceted, inclusive approach. Emergency financial assistance and structural interventions that promote housing security are warranted. Full article

The political transition in Syria following the fall of the Al-Assad regime in December 2024 has renewed debates about refugee return. This study examines Syrian refugees’ intentions to return from Jordan and the factors shaping these decisions using a mixed-method design. A stratified random sample of 1070 refugees residing in host areas and camps was surveyed through telephone interviews, complemented by four focus group discussions and two key informant interviews with experts. Although 61% of respondents expressed an intention to return, only 20% indicated concrete or immediate plans, suggesting that return remains largely aspirational rather than imminent. Access to housing and property (55%), economic condition (46%), and safety and security (40%) emerged as central determinants, indicating that structural barriers, rather than regime change alone, shape decision-making. Qualitative findings further reveal that emotional attachment to Syria sustains return aspirations, yet financial hardship, debt in Jordan, and housing destruction in Syria constrain refugees’ capabilities to act. These findings underscore that voluntary, safe, and dignified repatriation depends not only on addressing structural barriers in Syria, but also on maintaining essential protection and support for Syrian refugees in Jordan. Full article

Radon is the most important of all sources of natural radiation, and it belongs to the main air pollutants in closed space. It is necessary to develop awareness of its harmful effects in buildings in order to take appropriate measures to reduce the risk of exposure to it. This study assesses public awareness of radon-related risks in Serbia by analyzing four areas: general public, legislative framework, professional practices, and student knowledge. Data were collected from media sources, legal documents, conferences and scientific publications, and surveys among students of University of Belgrade. Student answers have shown that they are not aware of the danger of radon in buildings: there is a gap between knowledge about radon and about its effects in the interior space. The results also show low presence of this topic in the media and in professional circles in Serbia. This paper is a contribution to the overall efforts to spread awareness in Serbia about the problem of the presence of radon in closed spaces and the health problems it can cause. This is also important in the context of the search for energy-efficient building solutions, where the passive house is emerging as the most sustainable form. It is a relatively new concept in Serbia, so information about the harmful effects of radon in indoor spaces and about the implementation of certain strategies in passive construction for protection against radon is necessary in order to protect the health of the environment and the population. Full article

Land transition in China has led to the emergence of highly heterogeneous neighborhoods. This process challenges the social sustainability of public green spaces. This research investigates the driving mechanisms of place attachment within green space across diverse community typologies in Beijing. This study constructed a structural equation model (SEM) based on 626 valid questionnaires, using the Stimulus–Organism–Response (S-O-R) framework. The overall SEM results indicate that place identity significantly contributes to civic behavior (β = 0.439, p < 0.001). However, a persistent ‘value-action’ gap remains, with 65.81% of residents demonstrating high identity yet low participation. Furthermore, the multi-group analysis (MGA) reveals that place attachment logic diverges significantly across groups. Regarding user identity, public events promote visitors’ place identity, but this effect remains insignificant among residents (β = −0.064, p > 0.05). Regarding generational differences, the macro-spatial environment is significantly associated with place dependence for young people (β = 0.330, p < 0.001) but is insignificant for the elderly. Community heterogeneity reveals distinct failure modes. In commodity housing communities, a disconnect exists where daily usage fails to foster dependence (β = 0.026, p > 0.05). Conversely, urban–rural resettlement communities display an identity deficit where public events fail to translate into place identity (β = 0.131, p > 0.05). The study proposes differentiated renewal pathways tailored to three community types. For commercial housing communities, it advocates precise interventions that prioritize social engagement. Meanwhile, for urban–rural resettlement communities, the focus shifts to accessibility and culturally rooted activities to help reconnect displaced populations. Full article

Tornadoes pose growing threats to both communities and the built environment, yet few studies have quantified how spatial characteristics of the built environment interact with social and economic factors while influencing tornado impacts. This paper introduces an integrated metric that combines tornado risk and exposure to evaluate localized disaster impact. Focusing on Florida’s Panhandle, we examine how housing density and affordability, network connectivity, and urban form efficiency, together with demographic and socioeconomic attributes, shape tornado impacts at the U.S. census block group (CBG) level. To address spatial autocorrelation and non-stationarity, five statistical models were compared, including both global and local spatial regressions. The findings indicate that multiscale geographically weighted regression (MGWR) most effectively captures the spatial heterogeneity of tornado impacts. Built-environment and affordability factors show clear spatial heterogeneity— smart location indexand housing cost burden (h_ami) are positively associated with tornado impact in CBGs near Tallahassee and parts of Pensacola—suggesting amplified impacts in location-efficient urban areas where exposure is concentrated and affordability stress may limit preparedness and recovery. In contrast, network density is negatively associated with the impact of key clusters, consistent with the idea that denser, more redundant road networks can reduce canopy-weighted disruption by providing alternative routes for emergency access and restoration. Overall, these findings can inform our understanding of how the built environment influences tornado exposure, offering critical insights for planners and policymakers seeking to strengthen communities against tornadoes. Full article

Zoonotic diseases account for approximately one billion cases of illness and millions of deaths globally each year. Increasing contact between humans and competent wildlife hosts elevates the risk of zoonotic spillover. Synanthropic bird species are key players in the transmission of zoonotic pathogens, including flaviviruses such as West Nile virus (WNV) and influenza A viruses like Avian Influenza Virus (AIV). Active surveillance of sentinel birds inhabiting urban areas allows for early detection of emerging pathogens before they cause zoonotic outbreaks. Despite nesting in close proximity to humans, the role of the house martin (Delichon urbicum) in the circulation of flaviviruses and AIV remains poorly understood. Here, we analyzed the presence of antibodies against flaviviruses and AIV in a colony of house martins from southwestern Spain. In addition, we aimed to detect amplicons of the matrix and nucleoprotein genes of AIV using RT-qPCR. While none of the samples tested positive for AIV by RT-qPCR, we observed an AIV seroprevalence of 2.13% based on non-subtyped ELISA. Notably, this is the first report of AIV-seropositive D. urbicum individuals captured in Spain. Moreover, we detected a flavivirus-group seroprevalence of 24.34%, similar to rates reported in the same house martin population between 2018 and 2020, suggesting widespread circulation of flaviviruses within this synanthropic species. These results support the hypothesis that house martins may participate in the transmission of these viruses between wild bird populations and humans in urban environments. Full article

Spinosad is a naturally derived insecticide obtained from a soil-dwelling bacterium and is widely used against various agricultural and public-health pests. Although resistance to spinosad has been reported in several pest groups—including thrips, fruit flies, beetles, lepidopterans, and even mosquitoes—no study to date has evaluated its resistance status in the house fly, Musca domestica L. (Diptera: Muscidae). The present study provides the first field-based assessment of spinosad resistance in larvae of M. domestica, based on field-collected populations from Türkiye, and offers the first baseline data on larval susceptibility for this species. House fly larvae collected from seven provinces were exposed to a series of spinosad doses, and LD₅₀ values were calculated using probit analysis. According to the results, LD₅₀ values showed variability of up to approximately 18-fold, ranging from 0.002 g a.i./m² in the Adana population to 0.036 g a.i./m² in the Şanlıurfa population. The corresponding resistance ratio (RR₅₀) values calculated based on the most susceptible population (Adana) ranged from 1.0 to 18.0, indicating low-to-moderate variation in baseline tolerance among the tested field populations. Despite these differences at low doses, the minimum operational dose of 0.25 g a.i./m² consistently produced 97–100% emergence inhibition in all populations. Overall, no high or very high resistance levels were detected across the tested populations. These findings indicate that, despite detectable differences in baseline tolerance, spinosad remains a highly effective larvicide for house fly management. The establishment of these baseline data is essential for future resistance-monitoring programs, and continued surveillance is strongly recommended to detect early shifts in susceptibility before operational resistance emerges. Full article