Similar Events Research Articles

Resources for action and organizational resilience in times of COVID‐19: A study in health care

AbstractThe COVID‐19 pandemic challenged health care organizations to cope with major disruptions, especially in the first waves. Several investigations were undertaken to understand how to support resilience during similar unexpected events. In this study, we attempted to unveil the resilient performance of health care organizations during the first waves of the COVID‐19 pandemic from the viewpoint of resources for action. Thus, the research objectives are twofold: (i) to evaluate organizational resilience in facing COVID‐19 by hospitals in Brazil and (ii) to evaluate the relationship between resources for action and resilient performance. Firstly, an online survey was sent to front‐line health care workers, resulting in 111 responses. Then, a questerview was undertaken through online interviews with some participants of the previous phase. Resources for action were interpreted as five aspects supporting decision‐making in health care organizations: information and communication; team, equipment, and tools; standard operating procedure (SOP); training; and built environment. Each resource was then unfolded based on the four potentials for resilient performance (i.e., anticipate, monitor, respond and learn). Respondents strongly agreed that their institutions are resilient (M = 4.15; standard deviation [SD] = 0.91). The potentials to learn (M = 4.23; SD = 0.96) and respond (M = 4.08; SD = 1.02) stood out, followed by monitoring (M = 3.85; SD = 1.07) and anticipating (M = 3.70; SD = 1.11). Although some differences stand out, findings corroborate with the joint performance of the resources for action to support resilience performance. Information and communication were the most present among the resources for action (M = 4.20). Making resources for action visible is a strategy for designing resilient systems, as it can be considered a bridge linking different resilience levels (micro, meso, and macro). Suggestions for future studies point out the need to promote the development and evaluation of resources for action in health care institutions.

European vineyards and their cultural landscapes exposed to record drought and heat

CONTEXTEuropean vineyards, producing over 50% of the world's wine and hosting significant cultural landscapes, face threats from climate change and related severe weather events. The summer of 2022, especially July, posed significant challenges due to extreme drought and high temperatures. However, this period also provided an opportunity to study how such events might involve viticulture in Europe and to explore mitigation solutions. OBJECTIVEThe objectives are (1) to characterize the severity of the extreme event of July 2022 in European wine regions regarding primary climatic parameters, (2) map vineyards at risk due to agricultural drought and high land surface temperature, and (3) discuss the role of various water-related interventions for mitigating similar events. METHODSAfter identifying the locations of European vineyards using the Corine Land Cover 2018 (CLC2018), open-access satellite data were employed to: (1) assess anomalies in Maximum Air Temperature (NATm), Land Surface Temperature (LST), Precipitation (P), and Soil Moisture (SM) in July 2022 compared to long-term averages; (2) identify regions at higher risk that experienced extreme agricultural drought (Vegetation Health Index, VHI = Extreme) and LST > 35 °C. RESULTS AND CONCLUSIONSIn July 2022, European vineyards experienced an average increase of 11% in NATm, a 9% rise in LST, and a reduction of 47% in P and 30% in SM compared to historical averages. 18% of European vineyards were at risk of drought and excessive heat, particularly in Portugal (31%), France (27%), and Italy (21%), including 10 viticultural cultural landscapes. Findings highlight the urgent need for long-term sustainable water management practices over emergency interventions. This research supports informed decision-making, emphasizing that climate resilience is necessary for preserving the cultural heritage of European wine-growing areas. SIGNIFICANCEThis research provides an overview of the dynamics of extreme events on viticulture at a continental scale, promoting climate-aware viticultural systems and offering insight scalable to global viticulture under changing climatic conditions.

Building Workplace Camaraderie Through Library Employee Programming

ABSTRACT Employees at libraries of all types are looking for ways to form and strengthen relationships between colleagues who may be physically and socially disconnected after a period of remote work or staff turnover. At East Tennessee State University’s Sherrod Library, some library faculty and staff formed a committee to plan monthly events to encourage community among library employees. Events have included craft and poetry workshops, music and book discussions, potlucks, and professional development sessions. Recommendations to the reader for planning similar events include considering accessibility and scheduling, drawing from local talent and resources, and experimenting with a variety of activities. The committee’s efforts have strengthened relationships among library employees, improved leadership skills for early career librarians, and inspired new outreach projects to engage the campus community.

‘Someone has taken all my tiaras' pre-teen girls’ emotional engagements with controversial online behaviors

ABSTRACT Based on ethnographic fieldwork including video recordings, this study examines how pre-teen girls, in everyday peer interaction, deal with controversial issues on a social media network. Drawing on a multimodal interactional approach, we analyze the situated affective and collaborative embodied work through which a peer group unravels and remedies problematic online behaviors (cheating, scamming, stealing). The results show how the girls affectively align themselves to deal with online risks in ways that demand different social media skills as well as networks of supportive peers. The girls agentively draw upon the affordances (texting, images, social norms) of the social media network as well as their expertise and collective knowledge of similar online events. The creative power of the peer group plays an important role, in terms of how the girls nourish their peer culture while building mutual trust and collaborative competencies for interpreting and anticipating risky practices in their lives with peers.

Review of the impacts of COVID-19 pandemic on the employment of college graduates in China and countermeasures to it.

The employment of college graduates has always been the focus issue of the whole society. Affected by the COVID-19, college graduates are facing a severe employment situation. In the present study, we explore the impacts of the COVID-19 on the employment of college graduates. We explore the employment promotion measures introduced by Chinese government and colleges and universities through a quick review and illustrate the difficulties that college graduates face. Furthermore, the present study explores the impacts of the COVID-19 on five aspects of the employment of college graduates: recruitment demand reduce, employment competition rise, employment channels change, psychological anxiety increase and employment structural contradiction intensify. In addition, we conclude that the employment promotion measures introduced by Chinese government and colleges and universities in respond to the impacts of the COVID-19 on the employment of college graduates have significantly promoted the employment of college graduates to a large extent and we provide implications based on the application of the study. The findings of the present study are of great significance for all countries worldwide to better cope with various similar emergency events, to alleviate employment pressure and to promote better and fuller employment of college graduates.

Precise relative magnitude measurement improves fracture characterization during hydraulic fracturing

SUMMARY Microseismic monitoring is an important technique to obtain detailed knowledge of in-situ fracture size and orientation during stimulation to maximize fluid flow throughout the rock volume and optimize production. Furthermore, considering that the frequency of earthquake magnitudes empirically follows a power law (i.e. Gutenberg–Richter), the accuracy of microseismic event magnitude distributions is potentially crucial for seismic risk management. In this study, we analyse microseismicity observed during four hydraulic fracture treatments of the legacy Cotton Valley experiment in 1997 at the Carthage gas field of East Texas, where fractures were activated at the base of the sand-shale Upper Cotton Valley formation. We perform waveform cross-correlation to detect similar event clusters, measure relative amplitude from aligned waveform pairs with a principal component analysis, then measure precise relative magnitudes. The new magnitudes significantly reduce the deviations between magnitude differences and relative amplitudes of event pairs. This subsequently reduces the magnitude differences between clusters located at different depths. Reduction in magnitude differences between clusters suggests that some attenuation-related biases could be effectively mitigated with relative magnitude measurements. The maximum likelihood method is applied to understand the magnitude frequency distributions and quantify the seismogenic index of the clusters. Statistical analyses with new magnitudes suggest that fractures that are more favourably oriented for shear failure have lower b-value and higher seismogenic index, suggesting higher potential for relatively larger earthquakes, rather than fractures subparallel to maximum horizontal principal stress orientation.

Modeling the dynamic impacts of maritime network blockage on global supply chains

Recent phenomena such as pandemics, geopolitical tensions, and climate change–induced extreme weather events have caused transportation network interruptions, revealing vulnerabilities in the global supply chain. A salient example is the March 2021 Suez Canal blockage, which delayed 432 vessels carrying cargo valued at $92.7 billion, triggering widespread supply chain disruptions. Our ability to model the spatiotemporal ramifications of such incidents remains limited. To fill this gap, we develop an agent-based complex network model integrated with frequently updated maritime data. The Suez Canal blockage is taken as a case study. The results indicate that the effects of such blockages go beyond the directly affected countries and sectors. The Suez Canal blockage led to global losses of about $136.9 ($127.5–$147.3) billion, with India suffering 75% of these losses. Global losses show a nonlinear relationship with the duration of blockage and exhibit intricate trends post-blockage. Our proposed model can be applied to diverse blockage scenarios, potentially acting as an early-alert system for the ensuing supply chain impacts. Furthermore, high-resolution daily data post-blockage offer valuable insights that can help nations and industries enhance their resilience against similar future events.

A Comparison of Surgical Approaches for Hip Hemiarthroplasty Performed for the Treatment of Femoral Neck Fracture: A Systematic Review and Network Meta-analysis of Randomized Controlled Trials.

Multiple hemiarthroplasty (HA) approaches exist for femoral neck fracture (FNF) treatment. However, there is no consensus on the superiority of one approach for postoperative outcomes. This study assessed outcomes among randomized controlled trials (RCTs) comparing the posterior approach (PA), direct lateral approach (DLA), anterolateral approach (ALA), and the direct anterior approach (DAA) in HA for FNF. PubMed, Ovid/MEDLINE, Scopus, Cochrane Central Registry of Controlled Trials, and Cochrane Database of Systematic Reviews were queried in February 2024. A frequentist model network meta-analysis of eligible prospective RCTs compared outcomes among approaches using P-scores. Of 1,481 retrieved studies, 11 RCTs totaling 1,513 FNF patients who underwent HA through a PA (n = 446; 29.5%), DLA (n = 481; 31.8%), ALA (n = 296; 19.6%), or DAA (n = 290; 19.2%) with median (interquartile range) follow-up of 6 (4.5-12.0) months were included for meta-analysis. DAA was associated with statistically increased operative duration (mean difference [MD], 1.89 minutes; 95% CI, 0.08 to 3.69 minutes; p < 0.001) compared with a PA, whereas an ALA was associated with statistically greater blood loss compared with a PA (MD, 5.81 mL; 95% CI, 4.11 to 7.50 mL; p < 0.001). There were no differences in the incidence of fracture, dislocation, infection, complications, revision, nor 1-year mortality among approaches. There were also no differences in hip nor pain score improvement at latest follow-up, although with high heterogeneity (I2 = 85.7% and 94.2%, respectively). This study found no clinical difference in improvement in pain, function, nor in revision outcomes and operative characteristics among HA approaches for FNF, and each approach had a similar adverse event profile. Despite limited randomized evidence, these findings suggest comparable short-term efficacy and safety of all approaches. Therapeutic, Level I. See Instructions for Authors for a complete description of levels of evidence.

A Decade of SIG-Sponsored Community Events at SIGIR

When I attended the NeurIPS conference during my graduate student years, the parties of the Gatsby Neuroscience Unit weren't just social gatherings but pivotal points in my academic and professional journey. It was there where I connected with future collaborators, securing internship and post-doc opportunities that shaped my career. This experience underscored the value of helping students to build their network, a realization I carried with me to my first SIGIR conference in 2014. Observing a gap in such networking opportunities, I proposed the idea of organizing a similar event to foster connections, particularly for students and other newcomers to the research community.

Report on the Collab-a-Thon at ECIR 2024

We present a report on the Collab-a-thon, a series of sessions at the European Conference on Information Retrieval (ECIR) 2024 designed to help foster new collaborations during a conference. This report presents the motivation and design of the Collab-a-thon, a summary of the discussions covered at each session, and a set of recommendations for conducting similar events in the future. The event is set to run again at ECIR 2025 and planning is underway to pilot the event in a different community at the IEEE International Conference on Distributed Computing Systems (ICDCS) 2025. Date : 25--27 March 2024. Website : https://www.ecir2024.org/collab-a-thon/.

The landscape of physical sexual violence in Botswana, Ethiopia, Kenya, and Nigeria: A systematic review

The present study aimed to determine the trending country-specific common forms and patterns of sexual violence in Sub-Saharan African countries considering the multi-component nature of the menace. We systematically reviewed the population-based studies, obtained from PubMed, Medline, Scopus, and Google Scholar, that dealt with all-encompassing physical sexual violence in Botswana, Ethiopia, Kenya, and Nigeria. The quality and significance of the data obtained were assessed, and similar events were grouped and reported found to have inspired policy recommendations for non-sexual violence initiatives and respect for sexual and reproductive health rights in Sub-Saharan Africa. This systematic review revealed that sexual violence is captured as sexual harassment, sexual assault, sexual abuse, rape, coercive sex, incest, child sexual abuse, and intimate partner sexual violence. Botswana ranked first in worldwide rape statistics, while Nigeria and Kenya ranked 135th and 103rd, respectively. Ethiopia&amp;rsquo;s global rape ranking was not available at the completion of writing this paper, and further statistical proof(s) on these ranks were also not established in this review. The historic record for Botswana on forced sex reads 10.3% while forced marriage for Ethiopia shows 58%. Across the four countries selected, intimate partner violence ranges between 9.0% and 58.6%. While completed rapes, attempted rapes, and forced sexual initiation were mentioned in a few studies, the lifetime sexual violence ranges between 45.4% and 56%. In addition, the generic sexual violence was between 9.6% and 61.2%. In summation, sexual violence is prevailing at the locations of study, regardless of age, gender, or community. However, since the actual or suspected dominant perpetrators of sexual violence are overrepresented in the male populations, enlightenment campaigns should be implemented for boys and men so that they grow more conscious of other gender&amp;rsquo;s sexual rights in the conduct or pursuit of their sexual satisfaction and behavior. Effective community engagement (with parents, workers, academics, and students) should be prioritized by various governments and other stakeholders toward the achievement of improved sexual health, and well-being among the populace.

Transfer Learning for Transportation Demand Resilience Pattern Prediction Using Floating Car Data

Understanding the response of a transportation system to disruptive events is significant for evaluating the resilience of the system. However, data collection during such events is always challenging, and the data volume is insufficient for building a robust model. Transfer learning provides an effective solution to this problem. In this study, we propose a floating car data (FCD) driven transfer learning framework for predicting the resilience of target transportation systems to similar disruptive events to those that have ever occurred in the source systems. The core of the framework is an unsupervised pattern extractor that combines the k-Shape clustering and Bayes inference methods for extracting resilience patterns from the FCD collected in the source systems during the disruption period. The extracted patterns can then be used to assist in the prediction of the resilience of the target systems. We examine the effectiveness of the proposed framework by conducting a case study under the context of the COVID-19 pandemic, in which the source domain cities include Antwerp and Bangkok, and the target domain city is Barcelona. Results show that the extracted resilience patterns can improve the prediction performance of transfer learning neural networks with less pre-event information and limited data volume.

Establishment of acquired tracheoesophageal fistula using a modified magnetic compression technique in rabbits and its postmodeling evaluation.

Previous studies have validated the efficacy of both magnetic compression and surgical techniques in creating rabbit tracheoesophageal fistula (TEF) models. Magnetic compression achieves a 100% success rate but requires more time, while surgery, though less frequently successful, offers rapid model establishment and technical maturity in larger animal models. To determine the optimal approach for rabbit disease modeling and refine the process. TEF models were created in 12 rabbits using both the modified magnetic compression technique and surgery. Comparisons of the time to model establishment, success rate, food and water intake, weight changes, activity levels, bronchoscopy findings, white blood cell counts, and biopsies were performed. In response to the failures encountered during modified magnetic compression modeling, we increased the sample size to 15 rabbit models and assessed the repeatability and stability of the models, comparing them with the original magnetic compression technique. The modified magnetic compression technique achieved a 66.7% success rate, whereas the success rate of the surgery technique was 33.3%. Surviving surgical rabbits might not meet subsequent experimental requirements due to TEF-related inflammation. In the modified magnetic compression group, one rabbit died, possibly due to magnet corrosion, and another died from tracheal magnet obstruction. Similar events occurred during the second round of modified magnetic compression modeling, with one rabbit possibly succumbing to aggravated lung infection. The operation time of the first round of modified magnetic compression was 3.2 ± 0.6 min, which was significantly reduced to 2.1 ± 0.4 min in the second round, compared to both the first round and that of the original technique. The modified magnetic compression technique exhibits lower stress responses, a simple procedure, a high success rate, and lower modeling costs, making it a more appropriate choice for constructing TEF models in rabbits.

Geological study of an outburst flood event in the upper Yangtze River and risk of similar extreme events

Outburst flood sediments are studied on the upper course of the Yangtze River (known as the Jinsha River) where is a key region for the development of hydroelectric power. As the history and magnitude of outburst flooding in this stretch of the Jinsha River during historic times has remained largely undocumented, we have endeavored as part of this study to conduct field investigations into, and provide numerical dating (using OSL and 14C dating techniques) of outburst flood evidence found in the First Bend area of the Yangtze River. Carbonized nutshells and charcoal from the ancient settlement yielded 14C ages that precisely pinpointed an outburst flood event ∼1200–1300 cal yr BP, during China's Tang Dynasty (618–907 CE). However, OSL ages using the minimum age model for all outburst flood samples ranged from 9.1 to 1.8 ka, which was ∼0.5–7.8 ka older than the 14C-dated outburst flood. This discrepancy suggests a potential overestimation of quartz age when dating outburst flood sediments from the Holocene period. Furthermore, using 2D hydraulic modeling, we estimated the magnitude of the aforementioned outburst flood, revealing a reconstructed peak flow discharge of 51,000–55,300 m3/s. This discharge was three times greater than the 10,000-year flood for the hydroelectric power station nearest to the study area. Our study underscores the significant role of combining archaeological and geological evidence in enhancing paleoflood hydrology research. Through a multidisciplinary approach, our findings emphasize the importance of paleoflood hydrology studies in comprehending both the latent and catastrophic flood risks in alpine mountain areas amid the context of global warming. Key points•A series of outburst flood sediments was identified in the First Bend area of the Yangtze River, with a maximum flood water surface ∼86 m high above modern river level.•The obtained 14C ages would suggest that the outburst flood occurred at ∼1200–1300 cal yr BP in the Tang Dynasty (618–907 CE) of China.•The reconstructed peak flow discharge (51,000–55,300 m3/s) is larger than the three times of the 10,000-yr flood for the nearest hydropower station to the study site.

Web-based telemonitoring of visual function and self-reported postoperative outcomes in cataract care: international multicenter randomized controlled trial.

To compare web-based, self-administered follow-up after cataract surgery to conventional face-to-face follow-up. Eye clinics in the Netherlands, Austria, and Germany. Randomized controlled trial with an embedded method comparison study (ClinicalTrials.gov: NCT04809402). Routine patients with cataract were randomized into 2 groups: The telemonitoring group undertook web-based vision self-assessments and questionnaires from home, while the usual care group received conventional care. All participants had a 4- to 6-week postoperative clinic visit for safety and validation purposes. Outcomes included, the web test's accuracy for assessing postoperative visual acuity (VA) and refractive error, adverse event rates, and patient-reported outcome measurements (PROMs). 94 participants (188 eyes) were enrolled. Web-based uncorrected distance VA testing demonstrated a negligible mean difference (-0.03 ± 0.14 logMAR) when compared with conventional Early Treatment Diabetic Retinopathy Study chart testing, with 95% limits of agreement ranging from -0.30 to 0.24 logMAR. The web-based refraction assessment overestimated the postoperative refractive error (mean difference in spherical equivalent 0.15 ± 0.67 diopters), resulting in a poorer corrected distance VA compared with subjective refraction (mean 0.1 vs -0.1 logMAR). Rates of adverse events and unscheduled consultations were minimal across both groups. Preoperative and postoperative PROM questionnaires had a 100% response rate. Visual functioning (Catquest-9SF and National Eye Institute Visual Function Questionnaire-25) improved postoperatively (mean improvement -0.80 and 16.70, respectively) and did not significantly differ between the 2 groups. The patients with cataract in this study effectively provided postoperative outcome data using a web interface. Both conventional and web-based follow-ups yielded similar PROMs and adverse event rates. Future developments should reduce the variability in the web-based VA test and yield representative refraction outcomes.

Extreme iron cycling in a coastal lake-lagoon system driven by interactions between climate and entrance management

Intermittently closed and open coastal lakes and lagoons (ICOLLs) are ecologically important and hydrologically sensitive estuarine systems. We explore how extreme drought and ICOLL entrance management intersect to influence the geochemical cycling of iron. Opening the ICOLL entrance just prior to an extreme drought in 2019 led to prolonged extremely low water levels, thereby exposing intertidal/subtidal sulfidic sediments and causing oxidation of sedimentary pyrite. Subsequent reflooding of exposed sediments for ∼4 months led to extremely elevated Fe2+(aq) (>10 mM) in intertidal hyporheic porewaters, consistent with Fe2+(aq) release via pyrite oxidation and via reductive dissolution of newly-formed Fe(III) phases. Re-opening the ICOLL entrance caused a rapid fall in water levels (∼1.5 m over 7 d), driving the development of effluent groundwater gradients in the intertidal zone, thereby transporting Fe2+-rich porewater into surface sediments and surface waters. This was accompanied by co-mobilisation of some trace metals and nutrients. On contact with oxic, circumneutral-pH estuarine water, the abundant Fe2+(aq) oxidised, forming a spatially extensive accumulation of poorly crystalline Fe(III) oxyhydroxide floc (up to 25 % Fe dry weight) in shallow intertidal zone benthic sediments throughout the ICOLL. Modelling estimates ∼4050 × 103 kg of poorly-crystalline Fe was translocated into surficial sediments. The newly formed Fe(III)-oxyhydroxides serve as a metastable sink encouraging enrichment of both phosphate and various trace metal(loid)s in near-surface sediments, which may have consequences for future cycling of nutrients, metals and ICOLL ecological function. The additional Fe also may enhance ICOLL sensitivity to similar future drought events by encouraging pyrite formation in shallow (<5 cm) benthic sediments. This system-wide translocation of Fe from deeper sediments into surficial benthic sediments represents a form of geochemical hysteresis with an uncertain recovery trajectory. This study demonstrates how climate extremes can interact with anthropogenic management to amplify ICOLL hydrological oscillations and influence biogeochemistry in complex ways.

Leveraging Generative Artificial Intelligence to Broaden Participation in Computer Science

Generative Artificial Intelligence (AI) was incorporated into a competitive programming event that targeted undergraduate students, including those with little programming experience. The competition incorporated a range of challenge design approaches that promoted meaningful interaction with generative AI system, even while keeping the challenge difficulty level to an appropriate level. An analysis of survey responses and competition data showed that this format lowered barriers to participation, successfully engaged students throughout the competition, and increased the likelihood that they would participate in a similar event. In an extension of this work, a professional development workshop for high school teachers is being developed, along with a contest for high school students. Participant surveys and logs of interaction with the contest and generative AI systems will be analyzed to measure the effect of generative AI on student self-efficacy and suggest ways to integrate generative AI instruction into computer science curriculum.

The Spatial Scale and Spread of Child Victimization.

Previous research shows that large, densely populated urban areas have higher rates of child victimization that have persisted over time. However, few investigations have inquired about the processes that produce and sustain hot and cold spots of child victimization. As a result, the mechanisms that produce the observed spatial clustering of child victimization, and hence "why" harms against children tend to cluster in space, remains unknown. Does the likelihood of being a victim of violence in one location depend on a similar event happening in a nearby location within a specified timeframe? Rather, are child victims of violence more likely to reside in suboptimal neighborhood conditions? This paper aims to present an analytical and theoretical framework for distinguishing between these locational (point) processes to determine whether the empirical spatial patterns undergirding child victimization are more reflective of the "spread" via contagion (i.e., dependency) or whether they are produced by neighborhood structural inequality resulting from spatial heterogeneity. To detect spatial dependence, we applied the inhomogeneous K-function to Los Angeles Medical Examiner data on child homicide victim locations while controlling for regional differences in victimization events (i.e., heterogeneity). Our analysis found strong evidence of spatial clustering in child victimization at small spatial scales but inhibition at larger scales. We further found limited support for the spatiotemporal clustering of child victimization indicative of a contagion effect. Overall, our results support the role of neighborhood structural vulnerability in the underlying mechanisms producing patterns of child victimization across Los Angeles County. We conclude by discussing the policy implications for understanding this spatial patterning in geographical context and for developing effective and targeted preventive interventions.

WAITING FOR A CONCERT IN SUMMER HEAT: A TRANSIENT ST ELEVATION IN A YOUNG MAN

Abstract A 22–year–old man, without prior cardiological history, was waiting for a concert to start many hours in summer heat. Suddenly he started to feel chest pain, dyspnea, and palpitations. Electrocardiogram (EKG), registered from first aid responders, showed a ST elevation in V1–V3 leads and ventricular repolarization alterations in inferior leads. The patient was brought to Emergency department (ED) where a new EKG resulted normalized, blood test samples showed High Sensitive Troponin T (HsTn) 35 ng/L (at plateau in three seriate measures), serum creatinine 2.0 mg/dL, total Creatine Kinase 646U/L, Ck–MB 10.6 ng/mL, Reactive C Protein (RCP) 1.2 mg/dl. The toxicological evaluation was negative. Transthoracic Echocardiography (TTE) did not show any regional ventricular kinesis alterations nor valvular defects, global systolic function was preserved. A Coronary Computed Tomography (CT) scan showed an intramyocardial bridge on Anterior Descending (DA) Coronary Artery associated to 7 mm pericardial effusion without coronary stenosis. A Cardiac Magnetic Resonance (CMR) with gadolinium was performed, which did not show (in T2 mapping sequences) oedema nor Late Gadolinium Enhancement (LGE). Considering a coexistence of Brugada syndrome pattern at EKG, an Ajmaline testing was performed, which resulted negative. Discussion: Dehydration due to any intake of water after standing many hours in summer heat could have been the trigger for a vasospasm of DA that in this patient has a partially intramyocardial course. This anatomical finding was not known until CT scan was performed. Our diagnostic hypothesis of a vasospasm on DA is supported by EKG alterations and elevation enzymes of myocardionecrosis, in absence of any coronary stenosis. Elevated creatinine values in the absence of other renal concomitant comorbidities were suggestive for acute dehydration too. Differential diagnosis took also into consideration myo–pericarditis, especially for the pericardial effusion finding revealed by CT scan: this diagnosis was not confirmed through CMR but also by the evolution of clinical conditions of our patient. We discharged the patient, asymptomatic with normalized renal function after some intravenous hydration and we prescribed a calcium channel blocker. At a follow up visit, three months after the acute event, our patient was in good clinical condition and denied occurrence of any other similar events.

Simulation and Management Impact Evaluation of Debris Flow in Dashiling Gully Based on FLO-2D Modeling

Dashiling Gully, located in Miyun District, Beijing, exhibits a high susceptibility to debris flow due to its unique geological and topographical characteristics. The area is characterized by well-developed rock joints and fissures, intense weathering, a steep gradient, and a constricted gully morphology. These factors contribute to the accumulation of surface water and loose sediment, significantly increasing the risk of debris flow events. Following a comprehensive field geological investigation of Dashiling Gully, key parameters for simulation were obtained, including fluid weight, volume concentration, and rainfall. The formation and development conditions of potential mudslides were analyzed, and numerical simulations were conducted using FLO-2D software (version 2009) to assess scenarios with rainfall probabilities of 1 in 30, 50, and 100 years. The simulations accurately reconstructed the movement velocity, deposition depth, and other critical movement characteristics of mudslides under each rainfall scenario. Using ArcGIS, pre- and post-treatment hazard zoning maps were generated for Dashiling Gully. Furthermore, the efficacy of implementing a retaining wall as a mitigation measure was evaluated through additional numerical simulations. The results indicated that mudslide velocities ranged from 0 to 3 m/s, with deposition depths primarily between 0 and 3 m. The maximum recorded velocity reached 3.5 m/s, corresponding to a peak deposition depth of 4.31 m. Following the implementation of the retaining wall, the maximum deposition depth significantly decreased to 1.9 m, and high-risk zones were eliminated, demonstrating the intervention’s effectiveness. This study provides a rigorous evaluation of mudslide movement characteristics and the impact of mitigation measures within Dashiling Gully. The findings offer valuable insights and serve as a reference for forecasting and mitigating similar mudslide events triggered by heavy rainfall in gully mudslides.