Primary Influence Research Articles

Beyond just green: Explaining and predicting restorative potential of urban landscapes using panorama-based metrics

Amidst the growing concerns about mental health issues among urban dwellers, there has been increased attention to the restorative potential (RP) of urban landscapes. However, research into the relevant landscape features tends to lack the integration of quantifiable methodologies, which are essential for practical implementation in urban planning and management. To address this gap, our study employed panorama-based metrics relying on computer vision to quantify the features of urban landscapes. We established an explanatory (generalized linear mixed model, GLMM) and a predictive (Random Forest) model to comprehensively elucidate the relationship between these landscape features and RP. The RP outcome was derived from an online survey of respondents (n = 1500) with diverse socio-demographic characteristics, where each respondent was randomly assigned panoramic images from a pool of a hundred landscape scenes taken across the city of Singapore. The GLMM regression identified sky, tree, water, and depth as the primary influences of RP. Furthermore, the Random Forest model demonstrated commendable predictive performance and was used to visually showcase the scenes within the testing dataset with corresponding RP outcomes. To illustrate the potential application of this predictive tool, we also performed spatial mapping for RP prediction, taking the Singapore Botanic Gardens as an example. The subsequent discussion underscored the simultaneous effect of tree, sky, and depth on RP from a quantitative perspective using LOWESS curves. By employing metrics and models that explain and predict the RP, this study contributes evidence-based insights that underscore the pivotal role of trees and openness (sky and depth) in enhancing the psychological benefits of urban landscapes and provides an effective predictive tool that contributes to urban landscape planning and management.

Association between polycyclic aromatic hydrocarbons and infertility in U.S. women: National Health and Nutrition Examination Survey 2013–2016

Although there is a body of research indicating the potential impact of polycyclic aromatic hydrocarbons (PAHs) exposure on male infertility, the understanding of how PAH might affect female infertility is still limited. This study aimed to evaluate associations of PAHs, both individually and as a mixture, with female infertility using multiple logistic regression, Bayesian kernel machine regression (BKMR), and quantile g-computation (QGC) models based on data from the National Health and Nutrition Examination Survey (NHANES) 2013–2016. The study included 729 female participants. Multiple logistic regression results indicated that there was a significant association between the third tertile of 2-hydroxy fluorene (2-OHFLU) and female infertility, and the OR was 2.84 (95% CI: 1.24–6.53, P value = 0.015) compared with the first tertile after adjusting for the potential covariates. The BKMR model revealed a positive overall trend between mixed PAH exposure and female infertility, particularly when the mixture was at or above the 55th percentile, where 2-hydroxynaphthalene (2-OHNAP) and 1-hydroxypyrene (1-OHPYR) were the primary influences of the mixture. The univariate exposure-response function indicated positive associations between individual PAH exposure, specifically 2-OHNAP, 2-OHFLU, and 1-OHPYR, and female infertility. The QGC model also indicated a positive trend between exposure to a mixture of PAHs and female infertility, although it did not reach statistical significance (OR = 1.33, 95%CI: 0.86–2.07), with 1-OHPYR having the greatest positive effect on the outcome. This study suggested that exposure to PAHs may be associated with female infertility and further research is needed to consolidate and confirm these findings.

A Study on Punya Lekhana Tradition in Sri Lanka: with reference to Kandyan Era

From the ruler to the ordinary citizens, the documents that record the meritorious deeds can be called 'Punya Lekhana'. The history of writing these documents can be traced back to time immemorial. The primary influence of these writings was the belief in meritorious acts of man, and the ideas and ideologies on good deeds and as shaped up by tradition. The aim of this research was to study the charity writing tradition in Sri Lanka and the research question was whether this tradition continued during the Kandyan Period. Historical methodology was applied for this research. It seems that the idea of keeping a record of the merits done by oneself started at the beginning of the Kandyan era, and 'Punya Lekhana' was compiled to record the merits done by the king and the ordinary people. It was a custom to prepare and keep the most common pious writings written in a temple using palm leaf medium as an appendix to a palm leaf manuscript or as a palm leaf manuscript. Since there are charitable documents of various natures, classification is possible according to their nature. These are Punyanumodhana Patra, Pundyanumodhana Sandesa, Punya Pustaka and Punya Ayadeum Patra. It is evident that these charity writings can be useful to genealogists to obtain information on genealogy. However it can be said that these documents were not been used as primary sources in historical research. This study underlines the fact that these are a unique source of literature in studying the religious, political and socio-economic history of the kandian Period.

The factors involved in surgical decision-making in younger women diagnosed with breast cancer in Aotearoa New Zealand: A qualitative analysis.

Women diagnosed with breast cancer must make important surgical decisions. The decision-making process for younger women is complex, with this group more likely to have an advanced diagnosis and life-stage considerations that can impact on treatment. This study investigated the decision-making process of women aged <50 years who had undergone breast cancer surgery within the preceding 12 months in Aotearoa New Zealand. Twelve women participated in semi-structured qualitative interviews to explore the factors that influenced treatment decisions. Thematic analysis resulted in three themes. Fear was the main concept identified as the primary influence on initial decision-making. Good quality shared decision-making between patient and clinician was found to provide essential support during the diagnosis to treatment period. In addition, women expressed a need for multi-modal presentation of medical information and more material reflecting younger women. These findings inform provision for younger women making surgical decisions when diagnosed with breast cancer.

Unveiling the role of vermicompost in modulating phenylpropanoid metabolism in basil (Ocimum basilicum L.): A single-cell type PGT approach

This research delves into phenylpropanoid metabolism, focusing on phenylpropene biosynthesis in the methyleugenol chemotype of basil (Ocimum basilicum L.). We isolated peltate glandular trichomes (PGTs) from basil leaves to eliminate primary metabolic influences, offering a unique perspective into these complex processes. Vermicompost, chosen for its eco-friendly composition and superiority in invigorating phenylpropanoid metabolism. In this study, we investigated the impacts of solid and tea-form vermicompost applications at 0%, 10%, and 25% doses on the methyleugenol chemotype of basil, focusing on the expression levels of PAL, 4CL, EGS, EOMT, and CVOMT genes and phenylpropene accumulation in the peltate glandular trichomes. Results showed that 10% solid vermicompost (SV) application increased 4CL expression level at 236%, while 25% SV application further enhanced EOMT and CVOMT expressions to towering values by 7,494-fold and 19,643-fold, respectively. SV applications did not significantly impact eugenol accumulation but suppressed chavicol biosynthesis. Methyleugenol and methylchavicol accumulation rose in a dose-dependent manner, with significant increases observed in the 25% SV application. A positive correlation was found between CVOMT expression and accumulation rates of methyleugenol and methylchavicol phenylpropenes following SV applications. Conversely, vermicompost tea (VT) applications led to mixed gene expression patterns and reduced eugenol and methyleugenol ratios in peltate glandular trichomes compared to control. In summary, the notably high gene expressions observed in the results of our preliminary study offer a new perspective in the field of phenylpropanoid metabolism. This underscores the value of utilizing single-cell type PGTs for examining secondary metabolic pathways in plants and demonstrates the impact of vermicompost on phenylpropene production.

Enhancing phytoremediation of cadmium and arsenic in alkaline soil by Miscanthus sinensis: A study on the synergistic effect of endophytic fungi and biochar

Endophytic fungi (Trichoderma harzianum (TH) and Paecilomyces lilacinus (PL)) showed potential in phytoremediation for soils contaminated with potentially toxic elements (PTEs (Cd and As)). However, their efficiency is limited, which can be enhanced with the assistance of biochar. This study sought to investigate the effects of TH at two application rates (T1: 4.5 g m−2; T2: 9 g m−2), PL at two application rates (P1: 4.5 g m−2; P2: 9 g m−2), in conjunction with biochar (BC) at 750 g m−2 on the phytoremediation of PTEs by Miscanthus sinensis (M. sinensis). The results showed that the integration of endophytic fungi with biochar notably enhanced the accumulation of Cd and As in M. sinensis by 59.60 %–114.38 % and 49.91 %–134.60 %, respectively. The treatments T2BC and P2BC emerged as the most effective. Specifically, the P2BC treatment significantly enhanced the soil quality index (SQI > 0.55) across all examined soil layers, markedly improving the overall soil condition. It was observed that T2BC treatment could elevate the SQI to 0.56 at the 0–15 cm depth. The combined amendment shifted the primary influences on plant PTEs accumulation from fungal diversity and soil nutrients to bacterial diversity and the availability of soil PTEs. Characteristic microorganisms identified under the combined treatments were RB41 and Pezizaceae, indicating an increase in both bacterial and fungal diversity. This combination altered the soil microbial community, influencing key metabolic pathways. The combined application of PL and biochar was superior to the TH and biochar combination for the phytoremediation of M. sinensis. This approach not only enhanced the phytoremediation potential but also positively impacted soil health and microbial community, suggesting that the synergistic use of endophytic fungi and biochar is an effective strategy for improving the condition of alkaline soils contaminated with PTEs.

Deformation characteristics of existing tunnels induced by above-crossing quasi-rectangular shield tunnel

Quasi-rectangular shield (QRS) tunneling, a recent development in tunneling technology, offers the advantage of creating double tunnels with a single excavation. This technology causes significantly less secondary damage to the environment than traditional double shield tunneling. However, the deformation characteristics of existing tunnels caused by the QRS tunnel crossing above them are unknown. This study presents the first application of a QRS tunnel crossing above existing tunnels. It provides a comprehensive overview of the vertical displacement, horizontal displacement, segment convergence, and torsional deformation of existing tunnels when the QRS crosses above and runs parallel to the existing tunnels in the Hangzhou Metro Line 4. The measurement results indicate that the existing tunnels exhibit a maximum vertical displacement of 7.2 mm, maximum horizontal displacement of 2.3 mm, maximum segment convergence of 5.8 mm, and rotation index of up to ±10 × 10-4 at the intersection of the QRS and existing tunnels. All of the measurement results fall within the acceptable range, demonstrating the exceptional efficacy of QRS in controlling the deformations of existing tunnels. The effects of the plane position and distance between the tunnels on the deformation of the existing tunnels is also discussed. The deformation of the existing tunnels is negligible when the distance between the QRS and existing tunnels exceeds 16 m. The maximum vertical displacement, horizontal displacement, segment convergence, and zero-values of the rotation index occur at approximately 5 m in the plane position rather than at the intersection between the QRS and existing tunnels. The primary influence zone where the QRS tunnel crosses above existing tunnels is discussed.

Temporal dynamics of genetic architecture governing leaf development in Populus.

Leaf development is a multifaceted and dynamic process orchestrated by a myriad of genes to shape the proper size and morphology. The dynamic genetic network underlying leaf development remains largely unknown. Utilizing a synergistic genetic approach encompassing dynamic genome-wide association study (GWAS), time-ordered gene co-expression network (TO-GCN) analyses and gene manipulation, we explored the temporal genetic architecture and regulatory network governing leaf development in Populus. We identified 42 time-specific and 18 consecutive genes that displayed different patterns of expression at various time points. We then constructed eight TO-GCNs that covered the cell proliferation, transition, and cell expansion stages of leaf development. Integrating GWAS and TO-GCN, we postulated the functions of 27 causative genes for GWAS and identified PtoGRF9 as a key player in leaf development. Genetic manipulation via overexpression and suppression of PtoGRF9 revealed its primary influence on leaf development by modulating cell proliferation. Furthermore, we elucidated that PtoGRF9 governs leaf development by activating PtoHB21 during the cell proliferation stage and attenuating PtoLD during the transition stage. Our study provides insights into the dynamic genetic underpinnings of leaf development and understanding the regulatory mechanism of PtoGRF9 in this dynamic process.

Effect of Oxygen in Mo-TM (TM = Ti, Zr, Hf) Solid Solutions as Studied with Density Functional Theory Calculations

Mo-Ti-Si, Mo-Zr-B, and Mo-Hf-B are promising alloy systems for high-temperature applications as they show higher toughness and higher creep resistance than other Mo-based alloys. Regarding ductility and toughness, the chemical composition of the Mo solid-solution phase is the main parameter with which to tweak these properties of multiphase Mo-based alloys. Besides the common solid-solution hardening, one goal is to minimize embrittlement by decreasing the detrimental effects of interstitials like oxygen atoms in Mo alloys, which might be present in the bulk material due to trapping. For a better understanding of the trapping mechanisms and behavior of Mo solid solutions, the bonding situation and interaction of Mo atoms with the atoms of the alloying partners, as well as oxygen atoms, is worthwhile to investigate. For this, an in-depth analysis of the chemical bonding situation with calculations based on density functional theory in selected Mo-TM(-O) (TM = Ti, Zr, Hf) solid solutions is conducted in this work. It is shown that Ti atoms in a Mo solid solution are strong traps for oxygen atoms, while Hf and, even more clearly, Zr atoms are not. It is pointed out that the ionic and covalent interactions are the primary influence on the trapping behavior, as the change in ionic and covalent interactions between trapping and nontrapping models follows the trend Mo-1Ti &gt; Mo-1Hf &gt; Mo-1Zr, which resembles the trend of the trapping energy.

Complex interplay of science reasoning and vaccine hesitancy among parents in Shanghai, China

The psychosocial underpinnings of vaccine hesitancy are complex. Research is needed to pinpoint the exact reasons why people hesitate to vaccinate themselves or their children against vaccine-preventable diseases. One possible reason are concerns that arise from a misunderstanding of vaccine science. We examined the impact of scientific reasoning on vaccine hesitancy and human papillomavirus (HPV) vaccination intent through a cross-sectional study of parents of vaccine-eligible children (N = 399) at immunization clinics in Shanghai, China. We assessed the relationship between science reasoning and both vaccine hesitancy and HPV vaccine acceptance using general additive models. We found a significant association between scientific reasoning and education level, with those with less than a high school education having a significantly lower scientific reasoning that those with a college education (ß = -1.31, p-value = 0.002). However, there was little evidence of a relationship between scientific reasoning and vaccine hesitancy. Scientific reasoning therefore appears not to exert primary influence on the formation of vaccine attitudes among the respondents surveyed. We suggest that research on vaccine hesitancy continues working to identify the styles of reasoning parents engage in when determining whether or not to vaccinate their children. This research could inform the development and implementation of tailored vaccination campaigns.

Embodied decisions unfolding over time: a meta-ethnography systematic review of people with cancer’s reasons for delaying or declining end-of-life care

BackgroundBarriers to accessing hospice and palliative care have been well studied. An important yet less researched area is why people approaching the end-of-life decline a referral when they are offered services. This review focused on synthesising literature on patients in the last months of life due to a cancer diagnosis who have declined a referral to end-of-life care.MethodsSix academic databases were systematically searched for qualitative literature published between 2007 and 2021. Two researchers independently reviewed and critically appraised the studies. Using meta-ethnographic methods of translation and synthesis, we set out to identify and develop a new overarching model of the reasons patients decline end-of-life care and the factors contributing to this decision.ResultsThe search yielded 2060 articles, and nine articles were identified that met the review inclusion criteria. The included studies can be reconceptualised with the key concept of ‘embodied decisions unfolding over time’. It emphasises the iterative, dynamic, situational, contextual and relational nature of decisions about end-of-life care that are grounded in people’s physical experiences. The primary influences on how that decision unfolded for patients were (1) the communication they received about end-of-life care; (2) uncertainty around their prognosis, and (3) the evolving situations in which the patient and family found themselves. Our review identified contextual, person and medical factors that helped to shape the decision-making process.ConclusionsDecisions about when (and for some, whether at all) to accept end-of-life care are made in a complex system with preferences shifting over time, in relation to the embodied experience of life-limiting cancer. Time is central to patients’ end-of-life care decision-making, in particular estimating how much time one has left and patients’ embodied knowing about when the right time for end-of-life care is. The multiple and intersecting domains of health that inform decision-making, namely physical, mental, social, and existential/spiritual as well as emotions/affect need further exploration. The integration of palliative care across the cancer care trajectory and earlier introduction of end-of-life care highlight the importance of these findings for improving access whilst recognising that accessing end-of-life care will not be desired by all patients.

Spatiotemporal heterogeneity in ecosystem service trade-offs and their drivers in the Huang-Huai-Hai Plain, China

ContextUncovering the trade-offs among ecosystem services (ESs) is crucial for enhancing overall ES benefits and human well-being, as well as for improving regional landscape sustainability. However, research on whether relationships among ecosystem service (ES) change across spatial and temporal dimensions has been infrequent, particularly at fine scales.ObjectivesOur study aims to investigate the spatiotemporal heterogeneity in the trade-off strength and their influencing factors in the Huang-Huai-Hai Plain.MethodsIn this study, we analyzed the spatiotemporal evolution patterns of four ESs: food provision (FP), soil conservation (SC), carbon sequestration (CS), and water yield (WY) across the years 2000, 2010, and 2020. We utilized root mean square error, automatic linear models and geographically weighted regression to quantify the trade-off strengths among ESs and uncover the primary influences on the spatiotemporal evolution.ResultsThe trade-off strengths including FP_SC and CS_SC, were relatively high, particularly in the southwest region, surpassing 0.5. High-value regions for FP_WY and WY_CS were predominantly concentrated in the north, while WY_SC was mainly located in the south. Spatial heterogeneity was apparent in the factors influencing the trade-off strengths of ESs. NDVI positively influenced the degree of FP_WY in the western region but had a negative impact in the central region. Enhancing landscape configuration to reduce ES trade-offs involves diversifying and adding complexity to the landscape shape in the southwestern areas by adjusting landscape richness and shape. Regarding human activities, economic development would gradually encourage the coordination of FP_SC and FP_WY.ConclusionsOur study suggested that although the trade-offs among ESs may remain constant, the predominant type and intensity of their relationships vary across both space and time. Precipitation and NDVI emerged as the primary factors influencing the strength of ES relationships in this region. This research contributes to balancing the trade-off strengths among ESs and facilitates the pursuit of regional landscape sustainability.

College students' knowledge, attitudes, and practices of garbage sorting and their associations: a cross-sectional study of several universities in Beijing, China.

In recent years, the Chinese government has placed growing emphasis on environmental development. The implementation of effective waste separation practices in schools is crucial for establishing an ecological civilization in China. The present study aimed to assess the knowledge, attitude, and practice (KAP) of waste separation among Chinese university students and to understand the demographic factors influencing the KAP of the interviewed students. These sociodemographic factors include gender, age, education, and family environment. Based on the KAP theoretical model and the Lewin behavioral model (LBM), this study developed its questionnaire on college students' KAP of rubbish sorting. A survey was conducted on 1,282 college students from five colleges and universities in Beijing. A one-way ANOVA, Pearson's correlation analysis, and multiple linear stepwise regression analyzes were employed to explore the factors influencing college students' KAP scores on waste sorting. The questionnaire's reliability and validity were effectively verified through two rounds of Delphi expert consultation. The scores for KAP dimensions were 55.64, 69.18, and 54.8%, respectively. The overall KAP score of university students in waste classification was 46.93 ± 9.93, with a percentage score of 62.57%. More than half of the college students lack a clear understanding of waste classification. Grade, gender, major, highest family education, and family economic status all influence college students' KAP scores on waste classification. There is a notable deficiency in school education regarding waste classification, with only 30.7% reporting having received such education. This study unveils the overall KAP score of waste separation among Chinese college students, which is marginally acceptable. The interviewed students exhibit a positive attitude and a willingness to participate in waste separation. However, there is room for improvement in both knowledge and practices. A lack of knowledge about waste sorting emerges as the primary influence on individual-level practices. Consideration should be given to enhancing education and management of waste separation among college students, emphasizing the cultivation of an eco-conscious culture, and guiding students to establish correct ecological values.

Risk factors disclosure and corporate philanthropy

The disclosure of risk factors indicates that firms face uncertainties in their future development. Simultaneously, the revelation of such information can elevate investors' risk perception, potentially leading to the propagation of panic in the market. Consequently, risk factors disclosure may manifest in two distinct effects on corporate philanthropy behaviors. Firms might reduce their levels of charitable giving as a precautionary savings measure, or conversely, they may increase contributions motivated by self-interest. In this study, we investigate the impact of risk factor disclosure on corporate philanthropy. Our findings suggest that companies tend to escalate their corporate philanthropy efforts as a strategic response to mitigate the adverse effects of heightened risk factors disclosure. Moreover, this effect is more pronounced for firms operating in environments characterized by lower external information quality, tightened financing constraints, and increased market uncertainty. Further analysis reveals that the primary influence stems from the disclosure of internal risk factors rather than external ones. Additionally, our finding indicates that corporate philanthropy significantly mitigates the negative impact of risk factors disclosure on the liquidity of the firms' stock.

Meiotic recombination dynamics in plants with repeat-based holocentromeres shed light on the primary drivers of crossover patterning.

Centromeres strongly affect (epi)genomic architecture and meiotic recombination dynamics, influencing the overall distribution and frequency of crossovers. Here we show how recombination is regulated and distributed in the holocentric plant Rhynchospora breviuscula, a species with diffused centromeres. Combining immunocytochemistry, chromatin analysis and high-throughput single-pollen sequencing, we discovered that crossover frequency is distally biased, in sharp contrast to the diffused distribution of hundreds of centromeric units and (epi)genomic features. Remarkably, we found that crossovers were abolished inside centromeric units but not in their proximity, indicating the absence of a canonical centromere effect. We further propose that telomere-led synapsis of homologues is the feature that best explains the observed recombination landscape. Our results hint at the primary influence of mechanistic features of meiotic pairing and synapsis rather than (epi)genomic features and centromere organization in determining the distally biased crossover distribution in R. breviuscula, whereas centromeres and (epi)genetic properties only affect crossover positioning locally.

The benefits of being a mentor teacher in a teacher residency program

PurposeThis instrumental case study (Stake, 1995) explores the benefits experienced by mentor teachers who mentored resident teachers in a year-long residency program.Design/methodology/approachThe study was grounded by the Benefits of Being a Mentor conceptual framework, as defined by Ragins and Scandura (1999). The participating mentor teachers engaged in semi-structured interviews and a focus group. The data were analyzed through inductive and deductive data analysis techniques.FindingsUsing inductive and deductive data analysis techniques, three themes emerged on the benefits of being a mentor teacher: (1) extra support in the classroom, (2) professional learning and growth opportunities, and (3) investing in the future of education. The teachers’ perceived benefits were related to the connectedness of their personal and professional growth, the growth of the resident teachers and their students’ learning.Originality/valueMentor teachers play a vital role in teacher residency programs, as they are the primary influence on their resident teachers’ pedagogical praxis. In a residency program, mentor teachers support resident teachers’ sustained teaching experience by hosting them for one full academic year in their classrooms; therefore, exploring the benefits they receive from serving in this role is essential.

Nietzsche, Nishitani, and Laruelle on the Apostle Paul: tradition and the affirmation of life

ABSTRACT This article offers two further philosophical engagements with the writings of the Apostle Paul. The recent work of Francois Laruelle on Paul in his turn to Christian non-theology is placed in dialogue with Nishitani Keiji’s account. This effort is accomplished by briefly grounding the discussion in Friedrich Nietzsche’s interpretation, where Paul is cast as the inventor of Christianity and the primary influence in the religion’s turn to a doctrinal and world-denying form of existence. As described here, Laruelle follows the broad outline of Nietzsche’s interpretation, where Paul once more deviates from the example of Christ and is guilty of encouraging a turn away from the world towards concepts of transcendence and life after death. Nishitani, on the other hand, and despite his affection for Nietzsche’s thought, sees in Paul’s life and writings a turn towards immanence, and offers a heavily contrasting read of Paul, one which deserves greater attention.

Effectiveness of Advanced Organizer Learning Strategies on the Achievement of Fiqh with Varied Cognitive Styles

This study aimed to ascertain the treatment variable's primary influence and interaction effect on learning achievement in the Fiqh course. This study used a quasi-experimental approach, namely the nonequivalent control group design. The participants of the study were divided into two classes, namely Class A and Class B. A random process is conducted in the selection of the study subject class. In contrast, allocating students within each class is considered a fixed entity (intact group) that cannot be altered. The gathered data underwent statistical inference processing utilizing the two-lane 2x2 variant analysis technique. The findings indicated significant variations in learning outcomes in Fiqh courses between two groups of students instructed using different advanced organizer strategies, namely mind maps and concept maps. Additionally, no significant disparity in student achievement in Fiqh courses was observed between students with field dependence and field independence cognitive styles. Furthermore, no interaction effect was found between the learning strategies of advanced organizer types (mind maps and concept maps) and field dependence and field independence cognitive styles on learning achievement in Fiqh courses. The descriptive statistics analysis indicates that implementing the mind map advance organizer strategy (mean 78.59) exhibits a higher level of effectiveness than the concept map advance organizer strategy (mean 67.61) in enhancing student academic performance. It can be inferred that the advanced organizer technique known as the mind map type is consistently more effective than the concept map type, irrespective of variations in cognitive styles. In essence, using mind maps as an advanced organizer by students renders the consideration of cognitive style unnecessary, as it does not exert a differential impact on enhancing academic performance.

Intra-tidal upwelling variability off Zhoushan Islands, East China Sea

The coastal upwelling that takes place off the Zhoushan Islands is of great importance in the transport of nutrients, nourishing local fisheries and exerting a substantial environmental influence. While it is known that tides play a central role in triggering and controlling the Zhoushan upwelling, its short-term variability within the tidal cycle remains uncertain, thereby constituting the primary focus of this study, which relies on the analysis of high-resolution Sea Surface Temperature (SST) satellite images and in-situ data. In a tidal cycle, cold upwelling patches exhibit a westward shift during the flood tide and an eastward shift during the ebb tide. The extent of cold upwelling patches is greatest during maximum flood and ebb periods. At maximum ebb, the core temperature within the cold patches notably decreases, which indicates intensified upwelling. At the same time, a similar pattern of sudden increases is also observed throughout the entire water column in the upwelling region. The strong ebb current swiftly transports the upper water mass during maximum ebb, facilitating the compensation of lower water and augmenting the intensity of the upwelling. The calculated vertical velocity within the study area ranged from −9.04 × 10−4 m/s to 12.66 × 10−4 m/s during the observational period, when upwelling showed a significant congruence with low-temperature phenomena. Alternating upwelling and downwelling phases were discernible within a tidal cycle, with upwelling being prevalent. The influence of surface heat flux on seawater below the thermocline and night-time SST was negligible. Furthermore, compared to the vertical velocity, the calculated wind-induced upwelling velocity was much lower, reaching just 3.38 × 10−6 m/s during the observed tidal cycle, which suggests that wind does not exert a primary influence on upwelling within the tidal cycle. This study contributes to an enhanced understanding of upwelling variability under the influence of tides, a topic of paramount importance in the marine environment.

Source apportionment of soil heavy metals based on multivariate statistical analysis and the PMF model: A case study of the Nanyang Basin, China

Analyzing the spatial variation characteristics of heavy metals in soil and identifying their sources is crucial for preventing, controlling, and managing regional environmental pollution. In this study, 5778 surface soil samples were collected from the Nanyang Basin. The content characteristics of five heavy metals (As, Cr, Cd, Hg, and Pb) were determined and analyzed. The spatial distribution characteristics of these heavy metals in the soil were investigated using inverse distance interpolation and spatial autocorrelation analysis. Additionally, the sources of heavy metals in the soil were qualitatively and quantitatively explored through PCA and PMF models. The results revealed that the mean values of all elements, except As and Hg, exceeded the country soil background values. Spatially, the distribution of soil heavy metal elements showed evident heterogeneity and autocorrelation, with obvious differences between the western and eastern regions, where heavy metal concentrations were generally higher in the west and lower in the east. Four sources of heavy metals were identified in the study area: mining sources, natural sources, transportation sources, and a combined source of atmospheric deposition and agricultural activities. The element As was primarily derived from natural sources (80.90%). The element Cr was influenced by multiple factors, mainly from mining sources (66.20%) and natural sources (31.80%). Transportation sources (46.30%) and mining sources (44.80%) were the primary influences on the element Cd. The element Pb was influenced by transportation sources (64.70%) and natural sources (18.11%). The element Hg was mainly influenced by both atmospheric deposition from coal combustion and agricultural activities (90.50%).