Main Areas Research Articles

Possible effects of left pulmonary artery stenting in single ventricle patients on bronchial area, lung volume and lung function.

Left pulmonary artery (LPA) stenting is often required in single ventricle (SV) patients. Due to their close anatomical relationship an LPA stent could potentially compress the left main bronchus (LMB). We assessed the impact of LPA stenting on bronchial size, pulmonary volumes, and lung function in a cohort of SV patients. Forty-nine patients underwent cardiovascular magnetic resonance (CMR) and 36 spirometry 11 (8-15) years after Fontan. All patients were free of respiratory symptoms. LPA stents were inserted in 17 (35%) patients at 8.8 (3.4-12.6) years. Area/shape of the main bronchi (n = 46) and lung volumes (n = 47) were calculated from CMR-ZTE images for each lung and transformed in right-to-left (r/l) ratio and indexed for BSA. The effect of early stent insertion (prior to stage III) was analyzed. Patients with LPA stent had larger r/l ratio for main bronchus area (p < 0.001) and r/l ratio difference for lung volumes was slightly larger in patients with early stenting. A trend toward a deformation of LMB shape in patients with LPA stent and toward a higher prevalence of abnormal spirometry in patients with early stent implantation was observed. In this cohort of patients, early insertion of LPA stents seems to relate with smaller LMB sizes and a trend toward smaller left lung volume and higher prevalence of impaired lung function. Whether these findings are caused by the stent or, at least to a certain degree, present prior to the implantation needs to be verified.

I tumuli del parco archeologico di Cortona. Studi per la conservazione e la valorizzazione.

About fifteen years after the “Parco Archeologico” of Cortona was opened, it was deemed necessary to launch an accurate and extensive campaign of study and documentation of the sites from which it consists. The study and the survey were started from the tumuli of Sodo and the tumulus of Camucia; the work was conducted with the aim of deepening the construction techniques and the state of conservation of these artifacts.&#x0D; Two main areas of decay emerged, one related to the not always effective control and protection from rainwater; the other concerns the structural problems of parts in condition of ruin, but also of intact rooms apparently in good state of conservation. In some cases, possible intervention solutions were also outlined.&#x0D; This research also aims to lay the foundations for the future development of a planned conservation, which is a key theme in archaeological sites.

Investigating English as a Second Language (ESL) Learners’ Writing Skills through Open-source Software: A Case Study

The purpose of this study was to investigate the feedback of English as a Second Language (ESL) learners on their writing skills, with a focus on exploring ESL students' progress in writing skills based on tenses through open-source software. The software is employed to assess each student's improvement. This research follows a qualitative method, and data were collected through semi-structured interviews and the think-aloud protocol. The results are categorized into four main areas: (a) Feedback provided by students; (b) Students' perception of tenses and writing skills; (c) Students' views on teachers' teaching; and (d) practice through open-source software. The study revealed that ESL students had a positive perception of tenses, and their writing skills were enhanced by the semi-structured interviews conducted by ESL learners. The conclusion of the study highlighted that students themselves could recognize improvements in their syntax errors and sentence formation, with very few exceptions. It is advisable for teachers to incorporate a variety of proper grammatical topics in the future to assist students in improving their writing abilities.

Study on Modeling and Evaluating Alfalfa Yield and Optimal Water Use Efficiency in the Agro-Pastoral Ecotone of Northern China.

The agro-pastoral ecotone in northern China is the main production area of agriculture and animal husbandry, in which agricultural development relies entirely on groundwater. Due to the increasing water consumption of groundwater year by year, groundwater resources are becoming increasingly scarce. The substantial water demand and low germination rate in the first year are the main characteristics of alfalfa (Medicago sativa L.) yield in the agro-pastoral ecotone in northern China. Due to unscientific irrigation, water resources are seriously wasted, which restricts the development of local agriculture and animal husbandry. The study constructed the Dssat-Forages-Alfalfa model and used soil water content, leaf area index, and yield data collected with in situ observation experiments in 2022 and 2023 to calibrate and validate the parameters. The study found ARE < 10%, ENRMS < 15%, and R2 ≥ 0.85. The model simulation accuracy was acceptable. The study revealed that the water consumption at the surface soil layer (0-20 cm) was more than 6~12% and 13~31% than that at the 20-40 cm and 40-60 cm soil layers, respectively. The study showed when the irrigation quota was 30 mm, the annual yield of alfalfa (Medicago sativa L.) (7435 kg/ha) was consistent with that of the irrigation quota of 33 mm, and increased by 3.99% to 5.34% and 6.86% to 10.67% compared with that of irrigation quotas of 27 mm and 24 mm, respectively. To ensure the germination rate of alfalfa (Medicago sativa L.), it is recommended to control the initial soil water content at 0.8 θfc~1.0 θfc, with an irrigation quota of 30 mm, which was the best scheme for water-use efficiency and economic yield. The study aimed to provide technological support for the rational utilization of groundwater and the scientific improvement of alfalfa yield in the agro-pastoral ecotone in northern China.

Evaluation of farmland soil health and optimization of evaluation system under different green manure applications in a semi‐arid irrigation area

AbstractHealthy soil is essential for maintaining food security and enhancing ecosystem functions. Green manure application improves soil fertility and is an alternative to chemical fertilizers; however, research on optimizing soil health assessment systems and providing comprehensive and accurate information for local farmland green manure management models remains limited. In this study, we used maize and potato intercropped with green manure farmland in the main crop production area of a semi‐arid irrigation area in Northwest China as the research object, integrated the regional soil environment characteristics, and used principal component analysis and other methods to establish a minimum index data set including physicochemical, biological, and yield indices. A soil health assessment system applicable to the study region was constructed and optimized by drawing the scoring curve. The results showed that green manure treatment exerted a positive effect on the soil bulk density, nutrient content, extracellular enzyme activity, and the yield of maize and potato fields. This evaluation method showed that both green manure treatments could improve the soil health index of two major crop fields, with scores of 6.9 (3.7–8.6) and 6.2 (4.5–7.0) for maize and potato farmland, respectively, with a greater positive effect caused on maize. This evaluation system can not only reflect the soil conditions of farmland accurately given the application of green manure in the semi‐arid irrigation areas of northwest China but also provide reference for the promotion of organic fertilizers such as green manure and the resolution of regional soil health differences.

Structure, ultrastructure and cation accumulation in quinoa epidermal bladder cell complex under high saline stress.

Quinoa is a facultative halophyte with excellent tolerance to salinity. In this study, the epidermal bladder cell complex (EBCc) of quinoa leaves was studied to determine their cellular characteristics and involvement in salt tolerance. We used light microscopy, confocal RAMAN microscopy, confocal fluorescence microscopy, transmission electron microscopy, and environmental scanning electron microscopy complemented by energy dispersive X-ray analysis. Ionic content was quantified with flame atomic absorption spectroscopy and with flame emission photometry. Results show that: (i) the number of EBCcs remains constant but their density and area vary with leaf age; (ii) stalk cells store lipids and exhibit thick walls, bladder cells present carotenes in small vesicles, oxalate crystals in vacuoles and lignin in their walls and both stalk and bladder cells have cuticles that differ in wax and cutin content; (iii) chloroplasts containing starch can be found on both stalk and bladder cells, and the latter also presents grana; (iv) plasmodesmata are observed between the stalk cell and the bladder cell, and between the epidermal cell and thestalkcell, and ectodesmata-like structures are observed on the bladder cell. Under high salinity conditions, (v) there is a clear tendency to accumulate greater amounts of K+ with respect to Na+ in the bladder cell; (vi) stalk cells accumulate similar amounts of K+ and Na+; (vii) Na+ accumulates mainly in the medullary parenchyma of the stem. These results add knowledge about the structure, content, and role of EBCc under salt stress, and surprisingly present the parenchyma of the stem as the main area of Na+ accumulation.

Sustainability and efficiency of rural accommodation business: an approach in the main tourist region of southern Europe

PurposeThe objective of this study is to determine the efficiency of tourist accommodation companies located in the main tourist area of southern Europe as one of the three elements of the local sustainable development triangle.Design/methodology/approachThe analysis, carried out using the data envelopment analysis (DEA) methodology on 130 companies, has obtained that from the CCR perspective (results-oriented method when companies present constant returns on the input variables).FindingsThe companies involved are quite inefficient, while which from the BCC perspective (where the input and output variables used in the company respond to a variable and not constant scale) are quite efficient. The efficiency of these companies in the seven provinces of Andalusia has also been analysed to determine if there are patterns that differentiate them and thus be able to propose strategies that improve the sustainability of these territories. The conclusions of the study indicate the need to improve the operational efficiency of rural accommodation companies.Originality/valueThe analysis of efficiency in the hotel sector and even more so in the rural tourism sector is relatively scarce in the literature, especially in Spain. More specifically, Rubio and Román (2006) have demonstrated the existence of scale inefficiencies in hotels, but no evidence has been found in previous studies that this behaviour carries over to accommodation establishments located in the destinations under study.

Pathological manifestations in an educational building in Rio Verde-GO

The present study introduces knowledge about durability applied to guaranteeing useful life in buildings, with a view to preventing early degradation. The methodology used to carry out the research included carrying out a building inspection based on NBR 16747 (ABNT, 2020) to inspect the main common areas of the civil engineering teaching building at the Federal Goiano campus Rio Verde. The main pathological manifestations present in the inspected environments were: corrosion, leaching, cracks, mold, loss of system mass, construction defects and the metal/masonry combination. Existing damage to the structure does not compromise its functionality and safety, however corrective maintenance failure can affect the performance conditions of the building and its systems.

Robotics in Healthcare: A Survey

Research and innovation in the area of robotics in healthcare has seen significant growth in recent years. Global trends indicate that patients are getting older and sicker, while demands in healthcare workers are increasing their chance of injury. Robotic technology has the potential to enable high levels of patient care, clinical productivity and safety for both patients and healthcare workers. This paper surveys the state-of-the-art in robotics in healthcare and well-being, with particular attention to the key barriers and enablers to the implementation of this technology in real-world settings. Desktop research was used to identify available and emerging robotic technology currently in use (or with potential use) in healthcare settings. Primary sources of information included: academic publications, international organisations, commercial websites and online news agencies. In this paper, applications of robots in healthcare were divided into five main areas: service, assistive, socially-assistive, teleoperated and interventional robots. The maturity and readiness of different products is still an open challenge, with service and interventional robots leading the way. Wide-spread adoption of robots is likely to happen as the cost of the technology reduces, and wide evidence of beneficial long-term impact is available. This manuscript identified the main drivers, challenges, opportunities and considerations for implementing robots in healthcare. We hope this manuscript will raise awareness about robotics in healthcare among a wider audience to maximise availability, quality, and acceptability this technology.

Hermaphroditism and the impact of environmental variables on atresia prevalence in the pen shell Pinna rugosa

The pen shell fishery in northwest Mexico is based on reproductive quota, but the reproductive biology of Pinna rugosa, an economically valuable species, has not yet been documented in its main fishery area. The aim of this study was to evaluate the reproductive cycle of P. rugosa, determine the prevalence of atresia and hermaphroditism, and estimate the effect of environmental variables on its reproduction during 2015. Atresia is part of the reproductive cycle in which the cells undergo degeneration. It generally occurs after spawning to reabsorb compounds but it can also occur from the early stages of gametogenesis, affecting fertilization and recruitment. Gonad samples and environmental parameters were collected monthly from a commercial bank at Laguna Ojo de Liebre (Baja California Sur, Mexico) from January to December 2015. Shell height, sex, gonadal development stages, and atresia prevalence were recorded. The results showed that 14% of the individuals were females, 19% were males, and 67% were hermaphrodites, with 3 forms of functional hermaphroditism. Gonadal inactivity occurred in January, February, November, and December, coinciding with lower temperatures and higher chlorophyll a concentrations. Most individuals spawned in June and July. Calculation of a monthly gonad index revealed that gonad development was positively related to environmental variables (R2 = 0.54). Atresia was observed from March to October and was positively related to environmental conditions (R2 = 0.81). The high prevalence of atresia during periods of high temperature and food scarcity suggests that these environmental parameters can affect the reproductive activity of P. rugosa, and have recruitment and fishery productivity implications.

Assessing the impact of China's agricultural subsidy reform on fertilizer management: a county-level empirical analysis based on difference-in-difference model

Agricultural subsidies are widely acknowledged to be a crucial cause in food security and environmental protection, with a substantial impact on fertilizer consumption. China is also attempting to promote the green transformation of agricultural subsidies and sustainable food production. Existing research has explored the impact of China's agricultural subsidies reform (ASR) on farmers' fertilizer application behavior at household level, but little is known about the overall effect of ASR at the regional level. This paper investigates the effect of on fertilizer inputs using the staggered difference-in-difference (DID) approach, based on county-level panel data for 723 counties in China's Main Grain Producing Area (MPA) from 2013 to 2020. The results show that the ASR obviously increases fertilizer consumption by 5–6% in MPA during the study period. An analysis of mechanism reveals that ASR boosts fertilizer input through increased grain output and on-farm employment, which both play a 13.83% and 6.42% partial mediator role. Conversely, the growth of planting scale is the primary conduit for fertilizer reduction, accounting for 11.78% of the total. Furthermore, this positive effect is significantly lower in counties with low farmer disposable income or high agricultural mechanization than in others. These findings offer valuable insights for other developing countries aiming to promote green transformation of agriculture.

The main areas of research of Bishop Sofron Mudryi in the history of the Church

The article analyzes the outstanding contribution of Bishop Sofron (Stepan) Mudryy of Ivano-Frankivsk to the development of theological thought of the Ukrainian Greek Catholic Church in general and the study of the history of Ukrainian Christianity in particular. Through the analytical prism of biographical data about Bishop Sofron, the main milestones/stages of his formation as a full-fledged professional ecclesiological historian are outlined. Also taken into account and sufficiently considered are his key developments of historiographical nature and autobiographical memoirs of his own life, which allowed to synthesize a number of selected positions from the research heritage for a vivid presentation of the phenomenon of Bishop Sofon Mudryi as a follower of the classical Catholic concepts of theology of history.

Implementing BIM and Lean Construction Methods for the Improved Performance of a Construction Project at the Disassembly and Reuse Stage: A Case Study in Dezhou, China

The construction industry is adopting a collaborative paradigm by combining Lean construction (LC) principles and BIM capabilities. Existing studies lack sufficient case studies and performance evaluations, especially for the disassembly and reconstruction stage, creating a gap in the practical application of BIM and Lean construction (BIM-LC) in China. To bridge this gap, this study quantitatively assessed the BIM-LC methodology in a relocation project in Dezhou, China. The project employed BIM-LC practices such as the Last-Planner System (LPS), Just-In-Time (JIT), Kanban, Value-Stream Mapping (VSM), and Continuous Improvement to enhance construction efficiency and minimize waste. Two main areas of the relocation process were investigated: (i) the identification of common barriers and on-site solutions to the implementation of BIM-LC; (ii) evaluation of the construction efficiency, construction and demolition waste (CDW), and carbon-emission performance. The results showed that the BIM-LC strategy improved labor efficiency and productivity by 3.4% and 12.9%, shortened the construction period by 11 days, reduced construction costs by 8.07% (i.e., USD 9093.8), and reduced transportation costs by 12.5% (i.e., USD 1875). The CDW generation rate ranged from 1–5%, which is comparable to the rates observed in residential construction across various countries. The total weight was 1903.8 kg (10.4 kg/m2). Moreover, the carbon emission during the relocation process was 15,288.4 kgCO2e, with a carbon intensity of 83.5 kg/m2. This study extends the knowledge systems on the application of the BIM-LC method in relocation projects and supports data-driven decision making. It also plays a crucial role in fostering new markets for recycled components, contributing to the realization of a sustainable built environment.

The Design of a Learning Experience Platform using xAPI with Design Thinking Learning to Promote Innovation

This research focuses on designing a learning experience platform using xAPI and incorporating design thinking principles to foster innovation. The study focused on two main areas: a) analyzing and synthesizing the conceptual framework for a learning experience platform using xAPI with design thinking learning to promote innovation; and b) evaluating the suitability of a learning management model design for the learning experience platform using xAPI with design thinking learning to promote innovation. The evaluation was conducted by nine experts and the model consists of five parts: 1) the student module, 2) the teacher module, 3) the learning module, 4) the analytical module, and 5) the portfolio module. These modules were derived from an assessment of the suitability of the learning style, which indicated the highest level. The result regarding the suitability of the components of the LEP-DT learning model was at the highest level ( x = 4.79, S.D). The value is 0.39. According to the assessment results, the model can be applied to learning management.

An investigation of the current status of the new Health Technology Assessment in Korea and factors influencing assessment results

Background: This study aims to evaluate factors influencing assessment results in the new Health Technology Assessment (nHTA) in Korea.Methods: We analyzed publicly available nHTA reports obtained from the program’s website. A total of 258 reports, encompassing 305 technologies, were included. Reported details were categorized into three main areas: technical characteristics, evaluation methods, and publication types. To investigate differences in evidence level (high, medium, or low) and assessment results (pass or fail) according to these categories, we employed a chi-squared test. Univariate and multivariate logistic regression analyses were further conducted to identify factors associated with evidence level and assessment results.Results: nHTA reports employing meta-analysis and included randomized trials for evidence synthesis exhibited a higher likelihood of achieving high evidence level (odds ratio [OR], 5.008; 95% confidence interval [CI], 1.265- 18.826 and OR, 27.052; 95% CI, 7.802-103.330, respectively). Increasing evidence level was significantly associated with a higher possibility of passing the assessment (OR 2.789; 95% CI, 1.284-6.057). However, in univariate analysis, neither performing meta-analysis nor including randomized trials, both of which were associated with evidence level, demonstrated a statistically significant association with assessment results.Conclusion: This study represents the first systematic analysis of factors influencing nHTA assessment results in Korea. While increased evidence level was associated with positive assessment outcomes, factors affecting the evidence level itself did not directly influence assessment results. This suggests the need for further efforts to effectively integrate high-level evidence into assessment decisions within the nHTA program.

Monitoring environmental sustainability in Japan: an ESGAP assessment

AbstractThis paper assesses the environmental sustainability of Japan by applying the environmental sustainability gap (ESGAP) framework, which builds on the concepts of strong sustainability, critical natural capital, environmental functions, and science-based reference values. The assessment is carried out using two indices of environmental sustainability (Strong Environmental Sustainability Index (SESI) and Strong Environmental Sustainability Progress Index (SESPI)) that provide a snapshot and a trend perspective on environmental sustainability performance and on progress toward it. The results reveal that Japan has not experienced significant changes in terms of aggregate environmental sustainability throughout the 2011–2017 period, but this is primarily a consequence of the mutually offsetting movements of different indicators. The country performs best for the human health and other welfare indicators, but worst for the sink function indicators such as the per-capita CO2 emissions and the eutrophication of fresh water. The indices also expose the main policy areas that Japan needs to strengthen to improve its environmental performance. They include issues such as tropospheric ozone pollution, which has long been discussed in scientific literature but never been a primal policy focus of the government until very recently.

Use of Syringe Service Programs in Rural vs Urban Maine: A Harm-Reduction Study.

Syringe service programs (SSPs) reduce HIV and viral hepatitis transmission, as well as the prevalence of improperly disposed needles and needle stick injuries among first responders. Infections associated with injection drug use are rising in rural areas, including Maine, leading to concerns that SSP services are difficult to access for rural residents. A cross-sectional survey of 101 participants hospitalized with infections associated with injection drug use at 4 hospitals in Maine was collected over a 15-month period. Descriptive analyses were performed. Statistical analyses were completed using Fisher's exact tests, Pearson's chi-squared tests, and Student's t tests. Of 101 participants, 66 (65%) lived in urban areas, and 35 (35%) lived rurally. Participants living in rural areas reported less SSP use in the past 3 months (76% urban vs 43% rural). Rural participants also had a higher prevalence of injecting buprenorphine than urban participants (6% urban vs 12% rural). Rural participants were also more likely to obtain needles from pharmacies than urban participants (40% urban vs 71% rural). SSP programs are underrepresented and accessed less in rural areas of Maine. Rural populations of people who inject drugs have unique health characteristics and syringe-use practices. These findings highlight the need to develop rural SSP programs that address the unique needs of rural populations.

Songs to learn and sing

Based on over 50 years of the author watching Liverpool FC (LFC) football matches, this article examines the use of songs in and around such matches, locating it within wider debates about the use of song at football matches.The development of modern media’s relationship to football will be considered in three main areas – the importance of television in the modern age, the availability of songs on the internet and the use of the sound systems to control fan behaviour at matches. The article aims to provide some insights in to one of the most important – but often neglected – aspects of football fandom. It does so by examining the place of Liverpool Football Club (LFC) within the city, football and the media, fandom, singing at football matches and the particular nature of LFC songs. The article concludes by suggesting that it is in the singing of songs that true football fandom is found.Keywords: singing at football matches, Liverpool FC, popular music, football fandom, Spion Kop

Mexican women's neglected early International Relations contributions

Abstract This article addresses the underrepresentation of women from the global South in International Relations (IR) thinking. Gender disparities and academic global inequalities affect the quality of research in IR. The cases of three prominent women scholars—Minerva Morales, Olga Pellicer and Rosario Green, affiliated with one of the first academic departments of IR in Latin America, the Center for International Studies at El Colegio de México—are illustrative of how power and asymmetries can shape the circulation of ideas and limit our understanding of international relations. Despite their relevant contributions and successful careers, these scholars faced structural limitations to reaching an international audience and receiving the same status as their male peers. An examination of their publications shows that their inclusion helps us to improve our knowledge of the plural sources of IR debates. Consequently, they enlighten us on the persistent trends and challenges that still characterize the international insertion of Latin American countries, which have political consequences. Global asymmetries, research creativity, development and debt issues, domestic constraints in foreign policy and the imperative but difficult multilateral cooperation are their main areas of analysis that resonate in current world politics.

Changes in Population Exposure to Rainstorm Waterlogging for Different Return Periods in the Xiong’an New Area, China

In the context of global climate change and urban expansion, urban residents are encountering greater rainstorm waterlogging risk. Quantifying population exposure to rainstorms is an important component of rainstorm waterlogging risk assessments. This study utilized a two-dimensional hydrodynamic model to simulate the inundation water depth and inundation area resulting from rainstorms, with return periods of 5, 10, 50, and 100 years, in the Xiong’an New Area, and overlaid the gridded population data in 2017 and in 2035 under SSP2 to assess the change in population exposure. The results show that the average inundation depth and area increase were from 0.11 m and 207.9 km2 to 0.18 m and 667.2 km2 as the rainstorm return period increased from once in 5 years to once in 100 years. The greatest water depths in the main urban areas were mainly located in the low-lying areas along the Daqing River. The total population exposed to rainstorm waterlogging for the 5-, 10-, 50-, and 100-year return periods was 0.31, 0.37, 0.50, and 0.53 million, respectively, in 2017. However, this is projected to rise significantly by 2035 under SSP2, increasing 2–4-fold compared with that in 2017 for the four return periods. Specifically, the projected population exposure is expected to be 0.7, 1.0, 1.8, and 2.0 million, respectively. The longer the return period, the greater the increase in population exposure. The proportion of the population exposed at the 0.05–0.2 m water depth to the total population exposure decreases as the return periods increases, whereas the proportion changes in the opposite direction at the 0.2–0.6 m and &gt;0.6 m depth intervals. Spatially, high-exposure areas are concentrated in densely populated main urban regions in the Xiong’an New Area. In the future, more attention should be paid to densely populated low-lying areas and extreme recurrence rainstorm events for urban flood-risk management to ensure population safety and sustainable urban development.