Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 6.941
Filter
1.
Cureus ; 16(9): e68574, 2024 Sep.
Article in English | MEDLINE | ID: mdl-39371830

ABSTRACT

Background Cerebral venous and sinus thrombosis (CVT) is one of the most common causes of stroke in young people. With timely diagnosis and the right medical attention, this relatively rare neurologic condition may be curable. Finding the risk variables and outcome determinants is the aim of this study. Methodology A two-year prospective observational research was carried out in a tertiary care facility. Notable were the patient's demographics, symptomatology, and risk factor history. The Modified Rankin Scale (mRS) was employed to assess the patient's outcome and prognosis both at admission and after six weeks. The mRS scores at admission and follow-up were compared concerning outcome factors using the chi-square test. Results In all, there were 75 people with CVT. More men (42 patients, 56%) than women (33 patients, 44%), particularly in their third decade, were impacted. Polycythemia (22 patients, 29.3%) was the most prevalent risk factor, followed by the use of oral contraceptives (14 patients, 18.7%). Based on their mRS scores upon entry, 38 individuals (50.7%) were classified as functionally independent (mRS < 2), whereas 37 individuals (49.3%) were deemed functionally dependent (mRS > 2). At the six-week follow-up, 54 patients (72%) were functionally independent. Decompressive craniotomies were performed on 15 patients (20%), of which 10 (13.33%) had improvement, two (2.67%) had deterioration, and one patient passed away. The percentage of deaths was 1.33%. Two patients (2.67%) were not followed up with. Conclusion The present findings highlight that CVT predominantly affects younger individuals with a slight male predominance. The leading risk factors were polycythemia and the use of oral contraceptive pills (OCPs). Despite generally favorable prognoses with appropriate management, poorer outcomes were linked to altered consciousness, neurological deficits, and intracerebral hemorrhage (ICH) at presentation.

2.
Cureus ; 16(9): e68738, 2024 Sep.
Article in English | MEDLINE | ID: mdl-39371875

ABSTRACT

Trigeminal trophic syndrome (TTS) is an uncommon condition resulting from trigeminal nerve damage, characterized by persistent facial ulceration, loss of sensation, and paresthesia within the trigeminal dermatome, with ala nasi involvement being a key feature. Lesions develop from repeated self-inflicted manipulation and trauma of the dysesthetic skin. This report details three cases of TTS, highlighting periocular changes, with etiologies varying from cerebrovascular accidents to herpes zoster ophthalmicus.

3.
Health Sci Rep ; 7(10): e70098, 2024 Oct.
Article in English | MEDLINE | ID: mdl-39377017

ABSTRACT

Background and aims: Injuries from Road Traffic Accidents (RTAs), particularly among vulnerable groups such as the elderly, are considered a significant public health concern. The aim of this study was to show epidemiology of RTIs among the elderly people in the Eastern Azerbaijan province of Iran. Method: This cross-sectional study included all patients over 60 years old who admitted to the Shohada Hospital from 2006 to 2016. Data were extracted from the Hospital Information System. Injuries types were classified based on the International Classification of Diseases (ICD-10). Descriptive statistics (Mean, median and frequency) and inferential statistics (The Pearson Chi-square test) were used for data analysis through SPSS-24 software. Results: A total of 3509 RTAs involving patients over 60 years old from 2006 to 2016. These traffic-related injuries comprised 15% of all recorded injuries (23,321 cases). The mean age of the patients was 69.91 ± 7.61 years, with a predominant male representation (2324 patients, 64.74%). The median Length of Stay (LOS) in hospital was 3 days. Injuries most commonly affected the knee and lower leg regions (27.5%). The most frequent types of accidents were those involving car passengers (40.47%) and pedestrians (36.33%). The majority of RTAs occurred during the summer season. There was a significant difference in the rate of RTAs based on variables such as sex, age, season, and LOS (p < 0.001). Conclusion: The study highlights traffic-related injuries among the elderly, mostly affecting the knee and lower leg regions, especially during the summer season. The efforts should include enhancing safety measures for car passengers and pedestrians, particularly during the high-risk summer months. Also, it emphasizes the need for public transportation to improve safety for older people due to lower accident rates and senior-friendly features.

4.
Eur Heart J Case Rep ; 8(10): ytae499, 2024 Oct.
Article in English | MEDLINE | ID: mdl-39359366

ABSTRACT

Background: Blunt chest trauma (BCT) presenting to the emergency department is common and may cause life-threatening cardiac complications. Whilst complications causing haemodynamic instability are generally detected promptly, others may present late with long-term consequences. We describe a rare, serious complication of BCT presenting five years after a road traffic accident (RTA). Case summary: A 23-year-old man was incidentally found to have a murmur. Past history was notable only for BCT with rib fracture sustained in a RTA 5 years prior. Examination revealed a hyperdynamic pulse, loud decrescendo diastolic murmur, and Duroziez's sign over the femoral arteries. Echocardiography showed severe valvular aortic regurgitation (AR) from a hole in the left coronary cusp and holodiastolic flow reversal in the descending aorta. The left ventricle (LV) showed marked dilatation in diastole, mild dilatation in systole, and preserved systolic function. The aorta was normal. Severe AR was attributed to his previous BCT, with AR causing subsequent LV dilatation. He underwent aortic valve replacement (AVR) with rapid recovery. He remains well, and his echo shows a well-functioning AVR with normalization of LV dimensions. Discussion: Aortic regurgitation following BCT is rare but well-recognized, most often resulting from RTAs. Only a third of cases are diagnosed acutely. In others, lack of haemodynamic instability means that emergency echocardiography is not routinely performed, such that this may go unrecognized with long-term consequences. Clinicians should be aware of possible valve damage following BCT. Prompt echocardiography should be routinely performed for all BCT at initial presentation, even without haemodynamic instability.

5.
Int Nurs Rev ; 2024 Oct 03.
Article in English | MEDLINE | ID: mdl-39363388

ABSTRACT

BACKGROUND: Nursing competencies in armed conflict situations are critical for effective response and recovery. This study explores nurses' perceptions regarding their competencies in armed conflict zones to identify areas of proficiency and those requiring further emphasis in training. METHODS: This cross-sectional descriptive study adhered to the STROBE reporting guidelines. It used a validated questionnaire examining 47 different competencies for nursing in armed conflict zones, which were subsequently ranked to identify those that were valued most and least. RESULTS: In total, 102 questionnaires were returned (85% response rate). The highest-ranked competencies focused on immediate life-saving interventions and personal safety. In contrast, competencies involving broader disaster management, such as understanding organizational disaster plans, post-death care, and risk identification, ranked lower. This observation may indicate a tendency to prioritize direct clinical care over strategic planning and long-term recovery in disaster nursing education. CONCLUSION AND IMPLICATIONS FOR NURSING AND HEALTH POLICY: This study highlights the critical need to strengthen emergency care competencies among nurses working in armed conflict zones in Yemen. Its findings underscore the importance of targeted training programs, particularly in complex trauma management and psychological first aid, to address nurses' self-identified competency gaps. Policy implications include prioritizing resource allocation for emergency care infrastructure, implementing competency-based deployment strategies, and ensuring access to mental health support for nurses in working conflict zones. These actions are essential for building a resilient nursing workforce capable of providing quality care amidst the unique challenges of armed conflict.

6.
Radiol Oncol ; 2024 Oct 04.
Article in English | MEDLINE | ID: mdl-39365660

ABSTRACT

BACKGROUND: During a nuclear accident, numerous products of nuclear fission are released, including isotopes of radioactive iodine. Among them is iodine-131, with a half-life of 8.02 days, which emits ß radiation. For decades, it has been effectively and safely used in medicine. However, in the event of a nuclear accident, uncontrolled exposure can have harmful biological effects. The main sources of internal contamination with iodine-131 are contaminated air, food and water. The most exposed organ is the thyroid gland, where radioactive iodine accumulates via the Na+/I- symporter (NIS). NIS does not distinguish between radioactive iodine isotopes and the stable isotope iodine-127, which is essential for the synthesis of thyroid hormones. Exposure to radioactive iodine during a nuclear accident is primarily associated with papillary thyroid cancer, whose incidence begins to increase a few years after exposure. Children and adolescents are at the highest risk, and the risk is particularly significant for individuals living in iodine-deficient areas. CONCLUSIONS: Ensuring an adequate iodine supply is therefore crucial for lowering the risk of the harmful effects of exposure to radioactive iodine at the population level. Protecting the thyroid with potassium iodide tablets significantly reduces radiation exposure, as stable iodine prevents the entry of radioactive iodine into the thyroid. Such protection is effective only within a narrow time window - a few hours before and after the exposure and is recommended only for those under 40 years of age, as the risks of excessive iodine intake outweigh the potential benefits in older individuals.

7.
J Occup Rehabil ; 2024 Oct 05.
Article in English | MEDLINE | ID: mdl-39369167

ABSTRACT

PURPOSES: To measure the test-retest reliability and the clinical usefulness of the Work Limitation Questionnaire, and to compare the in-person with the telephone application. METHODS: Cross-sectional, exploratory study. The Work Limitation Questionnaire was answered three times: twice in person, to measure test-retest reliability and clinical usefulness, and once, by telephone, to measure the validity of the telephone application. RESULTS: Fifty-six individuals (32 men) with mild to moderate disabilities after stroke were included. Test-retest reliability was very high (ICC 0.96; 95% CI 0.94 to 0.98; p < 0.01), the clinical usefulness was high (9 out of 12 points), and the correlation between in-person and telephone applications was high (ρ = 0.7; 95% CI 0.5 to 0.9; p < 0.01). The average productivity loss was 4% (SD 5, min-max 0 to 15%). CONCLUSIONS: The Work Limitation Questionnaire showed adequate test-retest reliability and clinical usefulness in individuals with stroke. The telephone application produced comparable results to in-person applications. The participants reported low productivity loss, which may be related to the mild impairments of the included sample.

8.
Int J Soc Psychiatry ; : 207640241288684, 2024 Oct 06.
Article in English | MEDLINE | ID: mdl-39369295

ABSTRACT

OBJECTIVE: This study aimed to elucidate the effects of pre-evacuation family hospital visits on post-evacuation returns to Fukushima Prefecture (hometown) among psychiatric inpatients who mandatorily evacuated to hospitals outside the prefecture because of the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident. METHOD: Of the inpatients in Fukushima, 44 were admitted to a hospital in the nearby Soso district on March 11, 2011, and were therefore included in the current analysis. We collected information on their discharge after the evacuation and family visits before the evacuation by reviewing the medical records of both the evacuation destination and former hospitals. RESULTS: The average durations from the accident to post-evacuation return among patients with and those without former family visits were 681.8 days (standard error [SE] = 163.3) and 1,027.8 days (SE = 152.0), respectively. The log-rank test showed a tendency of earlier return to Fukushima among inpatients who had received family visits to the hospital before evacuation (p = .073). CONCLUSIONS: The results highlight the critical need for close collaboration between psychiatric medical practitioners and families, to not only support patients' community reintegration into daily life but also facilitate a timely return to their hometowns following long-distance evacuation caused by an unforeseen large-scale disaster.

9.
Int J Inj Contr Saf Promot ; : 1-8, 2024 Oct 01.
Article in English | MEDLINE | ID: mdl-39350755

ABSTRACT

Even though accidents with pedestrians are more likely to have a severe or fatal outcome, most research concentrates on the vehicle part of the accidents. To make better policies and infrastructure decisions it is crucial to understand how and why such accidents happen. In this article, 2.588 pedestrian accidents from the year 2018 that resulted in injury or death in the city of Ankara, Türkiye are considered, and different attributes are analyzed co-location-wise. Three types of analysis will be undertaken for these accidents: temporal, natural environment, and pedestrian characteristics. The season of the year, weekend-weekday, and time of day will be explored for the temporal analysis. Visibility (daylight, twilight, and darkness) and rain are the natural surroundings of interest. The analyzed pedestrian characteristics are age group, gender, clothing colour, and nationality. Generally, the accident properties are evenly distributed and mostly the higher co-locations occur with themselves. Three important results stand out in this study. Firstly, the type of precaution appropriate to different time periods of the day should be applied, taking into account the locations that have the strongest co-location with themselves. Secondly, a seasonal approach should be adopted in determining places where pedestrian safety needs to be increased in the city. Lastly, pedestrian safety measures targeting especially both '0-14 and 65 + age groups' and 'foreign citizenship' should be prioritized in the identified locations. The results show that the co-location methodology is a good fit for analyzing pedestrian accidents and a wider use of this methodology for other accident types and in general might be beneficial.

10.
Int J Inj Contr Saf Promot ; : 1-16, 2024 Oct 01.
Article in English | MEDLINE | ID: mdl-39351595

ABSTRACT

The rail construction industry is notable for its large scale, substantial investment, extensive stakeholders involvement, long construction period, and intricate operation and technology. This industry is among the most dangerous due to the highest number of occupational accident cases worldwide. Therefore, it is crucial to analyse and identify the existing literature on occupational accident factors in rail construction. To address the research aim, the study identified the factors that contribute to occupational accidents using systematic review methodology. This systematic literature review adheres to the rigorous Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) 2020 statement. Relevant publications from the past 25 years were retrieved from Scopus, Web of Science (WoS), and Science Direct electronic databases. Through a meticulous review of 43 selected publications, five accident factor themes were discovered: worker, workplace, materials and equipment, organizational, and environmental influences. The detailed analysis of these themes has led to the identification of 19 specific sub-factors within these categories, providing a granular understanding of the intricate elements contributing to accidents. This study offers a foundational understanding of accident factors in the rail construction industry, paving the way for targeted OSH interventions aimed at preventing occupational accidents in the future.

11.
Environ Monit Assess ; 196(10): 999, 2024 Oct 01.
Article in English | MEDLINE | ID: mdl-39354194

ABSTRACT

Golden jackal is one of the higher trophic level wild animals in rural Bengal. Their ecological significance is undeniable in regional ecosystems and biodiversity. But gradually they become threatened due to habitat contraction, road killing, poisoning and human persecution. The documentation of jackal death by road accident within the 12-km district highway which is a single lane bituminous road in Patshpur-I Community Development Block under Purba Medinipur district, India, reveals an unpredictable ecological circumstance (n-154). Jackals are killed by road accidents from 2022 to 2023. On behalf of this blameless situation, the present study conducted intensive observations, case studies and spatial-ecological analysis. The study also included stakeholder's perceptions to reach and relates the background of this fact. After observation and analysis, it has been found that the jackal deaths have a spatio-temporal signature and are connected with food and forage ground loss from their habitat-influenced area. Another outcome is that roadside habitat becomes an alternative food source and forage ground for them due to trench construction both alongside of the district highway and illegal dumping of meat wastes and domestic wastes. The seasonal biological activities of the jackals, local weather phenomena and car driver negligence are responsible for the accidental death of jackals along the district highway. Considering all the observed factors, the present study shared some reliable measures to control, protect and conserve this animal for balancing regional ecosystem as well as biodiversity in rural Bengal.


Subject(s)
Accidents, Traffic , India , Animals , Ecosystem , Humans , Environmental Monitoring , Biodiversity
13.
BMC Psychol ; 12(1): 474, 2024 Sep 09.
Article in English | MEDLINE | ID: mdl-39252091

ABSTRACT

BACKGROUND: Workforce health is one of the primary and challenging issues, especially in industrialized countries. The purpose of the present study was to evaluate the ability to predict accident-proneness among Saveh Industry workers in Iran, based on an extended Health Belief Model, that included the construct of spiritual health. METHOD: This descriptive-analytical study was conducted in 2022 on 384 workers in Saveh, Iran. The study aimed to explore relationships between accident proneness behavior, spiritual health, and health beliefs. The accident-proneness questionnaire consisted of two parts: the first part included demographic questions, and the second part comprised 9 sections covering personality traits, workplace harmful factors, miscellaneous factors, musculoskeletal disorders, safety culture, safety attitudes, job stress, organization interest, and degree of risk-taking. The Health Belief Model included 31 questions, while spiritual health was measured with the 20-question Paloutzian and Ellison questionnaire. The collected data were analyzed using SPSS version 26 software. RESULTS: In terms of accident proneness, 229 (59.6%), exhibited high levels, 148 (38.5%) had medium levels, and 7 (1.8%) showed low levels of accident-proneness. Hierarchical multiple regression analysis showed that in the first model, variables of perceived self-efficacy, vulnerability, and severity independently predicted workers accident proneness, explaining a total of 43% of variance in accident proneness behavior. In the second step, perceived self-efficacy (ß = 34%), perceived sensitivity (ß = 27%), spiritual health (ß = 16%), and perceived severity (ß = 12%) were included, respectively, which explained a total of 46% of the variance of accident-prone behavior of workers. CONCLUSION: Given the high rate of accident proneness observed in this study, there is a critical need for policymakers and health planners to design policies aimed at mitigating the risks associated with occupational accidents. Furthermore, the findings highlight the potential of integrating spiritual health into the Health Belief Model, as a conceptual framework for planning effective intervention programs to enhance workplace safety.


Subject(s)
Accidents, Occupational , Health Belief Model , Spirituality , Humans , Iran , Male , Adult , Female , Accidents, Occupational/psychology , Accidents, Occupational/prevention & control , Middle Aged , Surveys and Questionnaires , Young Adult , Occupational Health , Self Efficacy , Risk-Taking , Workplace/psychology
14.
Emerg Nurse ; 2024 Sep 16.
Article in English | MEDLINE | ID: mdl-39279340

ABSTRACT

Telemedicine is increasingly used in healthcare settings, including in unscheduled care. This article details the findings of a literature review that aimed to determine the benefits and limitations of using telemedicine in unscheduled care. The findings suggest that the use of telemedicine can be cost-effective for patients and healthcare providers and may reduce hospital transfer and admission rates. However, patients' digital literacy and communication needs, as well as technical issues, were identified as limitations. Further research is needed on the use of telemedicine in unscheduled care to determine how it affects patient care.

15.
J Family Med Prim Care ; 13(8): 3074-3077, 2024 Aug.
Article in English | MEDLINE | ID: mdl-39228558

ABSTRACT

Introduction: The global estimate reflects 4.4 million injury-related deaths every year and the thoracoabdominal region is frequently injured since it is a wide area. Methods: An autopsy-based cross-sectional study was conducted using a convenient sampling technique for three years. A Chi-square test was conducted for categorical variables. A P value of less than 0.01 was considered statistically significant. Results: Out of 80 cadavers, the male:female ratio was 1:0.31. The commonest age group was 20-29 years. Victims of road traffic accidents were 54 (67.5%) followed by falls from height 10 (12.5%). External thoracic injuries were commoner than internal and vice versa in abdominal injuries. Liver injuries were major in number. Combined thoracic-abdominal and associated injuries were observed in 67 (83.75%) victims. The commonest cause of death was craniocerebral injury combined with hemorrhagic shock (36.25%). Eighteen (22.5%) victims died on the spot having an Injury Severity Score (ISS) of 73.37 followed by a survival time of 1-7 days in 17 (21.25%) cases. A significant correlation was found between ISS and survival period. Conclusion: All thoracic and abdominal injuries represent a possible increase in morbidity and mortality; hence, working toward their prevention and timely intervention is necessary.

16.
Clin Case Rep ; 12(9): e9359, 2024 Sep.
Article in English | MEDLINE | ID: mdl-39247560

ABSTRACT

Key Clinical Message: Rudimentary left atrial appendage (LAA) is an extremely rare condition with an unclear association with cerebrovascular events. This case report discusses a patient with an unexplained cerebrovascular accident (CVA), where the diagnosis of rudimentary LAA was made using transesophageal echocardiography (TEE) and subsequently confirmed by computed tomography angiography (CTA). Abstract: Rudimentary left atrial appendage (LAA) is extremely rare. This report presents the case of a 50-year-old woman who experienced a cerebrovascular accident (CVA) and was found to have a rudimentary LAA. The patient had a history of diabetes mellitus (DM), hypertension, and dyslipidemia. An electrocardiogram (ECG) showed sinus rhythm, and Holter monitoring did not detect any atrial fibrillation (AF). Transesophageal echocardiography (TEE) and computed tomography angiography (CTA) were performed to identify the source of cardiac emboli, revealing a rudimentary LAA with no thrombus present.

17.
J Occup Rehabil ; 2024 Sep 01.
Article in English | MEDLINE | ID: mdl-39218821

ABSTRACT

PURPOSE: Previous research indicates that the compensation process is stressful for people with a compensable injury, contributing to poorer recovery. However, little is known about the challenges faced by clinicians who work in this setting. This study aims to qualitatively explore the experiences of clinicians delivering care to patients with compensable injuries in Australia. MATERIALS AND METHODS: Semi-structured interviews were conducted with 26 experienced clinicians providing care to compensable patients in Australia. The interviews were transcribed, and data were analysed using reflective thematic analysis. RESULTS: Participants described their work as challenging due to factors such as high patient distress, poor clinical outcomes, and high administrative load. However, they responded to these challenges in varying ways. While some reported feelings of vicarious injustice, emotional exhaustion, and self-doubt, others derived a sense of meaning, purpose, and mastery from these challenges. Clinician responses to the challenge of working with people with a compensation claim were associated with access to mentoring, continuous education and training, and a supportive workplace culture. CONCLUSION: Clinicians reported both positive and negative responses to the challenges of working with people with a compensable injury. Coping strategies that were associated with more positive reactions included seeking further education, mentoring, peer support. Prioritising these support systems is important for clinician wellbeing and patient outcomes.

18.
Article in English | MEDLINE | ID: mdl-39245614

ABSTRACT

Most maxillofacial traumas are caused by road traffic collisions and, in particular, by motorcycle accidents. Helmets represent an efficient protective tool in these traumas but they do not provide complete protection. The aim of this study was to perform an epidemiological analysis of facial fractures pattern in relation to the helmet type worn during the accident. The study was a retrospective analysis of 282 patients with a diagnosis of maxillofacial fracture caused by a motorcycle accident. The patients were divided in three groups based on helmet type (Group A: full-face helmet; Group B: modular [half-face] helmet; Group C: open-face helmet). For each group, fractures type and trauma severity, using the Comprehensive Facial Injury (CFI) scale, were recorded. Results showed that isolated midface fractures were strongly related to full-face helmet wearing (p < 0.001), while mandibular fractures and panfacial trauma/combined fractures were negatively correlated (p < 0.001). Mandibular fractures (p < 0.001) and panfacial trauma/combined fractures (p < 0.001) were strongly related to open helmet. Moreover, severe trauma (CFI 8.16) was recorded for open-face helmet wearing. In conclusion, full-face helmet wearing reduced the risk of facial fracture, in particular panfacial trauma/combined fractures, while open-face helmet wearing increased the risk of these fractures.

19.
Trauma Surg Acute Care Open ; 9(1): e001513, 2024.
Article in English | MEDLINE | ID: mdl-39296593

ABSTRACT

This study assesses the feasibility and acceptability of a Firearm Safe Storage Device Distribution Program. The distribution took place at the Break the Cycle of Violence Summit hosted by the Johns Hopkins Medicine, the Break the Cycle Hospital Violence Intervention Program, and the Johns Hopkins Bloomberg School of Public Health Center for Gun Violence Solutions. The findings will guide future efforts to distribute safe storage devices in clinical settings. Attendees of the Break the Cycle of Violence Summit could choose from three types of safe storage devices to provide to their patients within their practice. Those attendees who participated were asked to participate in an electronic survey to assess the feasibility and acceptability of the safe firearm storage device distribution at the Summit. 24 participants received safe storage devices at the Break the Cycle of Violence Summit. Of the 24 participants, 15 participated in our evaluation. 86% of participants distributed most of the devices by the time of the survey and 57% of participants stated that by having safe storage devices to distribute, they were more likely to provide safe gun storage counseling. All participants would like to see continued safe gun storage distribution programs in their community. The provision of free safe storage devices allowed for open conversations about firearms and safe storage with patients and clients. This study can be used as a model to guide future efforts in safe storage device distribution in a hospital or clinic-based setting and showed feasibility, effectiveness, and efficacy.

20.
J Hazard Mater ; 480: 135397, 2024 Aug 02.
Article in English | MEDLINE | ID: mdl-39298946

ABSTRACT

Vegetation barriers are an important environmental characteristic of spent fuel road transportation accidents. Spent fuel vessels may be affected by force majeure factors during transportation, which leads to damage to spent fuel assemblies and containers and can cause radionuclides to gradually release from assemblies to vessels to the external environment. In this work, considering the growth periods of coniferous vegetation barriers and vessel type, a radionuclide dispersion model based on computational fluid dynamics (CFD) was established by adding a decay term and a pressure loss term. The simulations showed that, first, compared to the small (Type-II) vessel, the effects of fluid flow around the large vessel (Type-I) have a more significant impact on radionuclide dispersion. The backflow around the Type-I vessel causes leaked radionuclides to disperse towards the vessel, and the larger the vessel is, the more significant the rise of the leaked radionuclide plume tail will be due to the increased negative pressure gradient area. Moreover, the area contaminated exceeding the maximum allowable concentration by radioactivity for the Type-I vessel is reduced gradually with the growth of coniferous vegetation barriers due to the weakening of the backflow effect by growing vegetation. Second, compared to vegetation barriers of 15 years and 23 years, the horizontal distance exceeding the maximum allowable concentration of the leaked 131I dispersion from Type II vessels near vegetation barriers for 12 years is the longest. The older the vegetation barrier is, the shorter the horizontal dispersion range, and the shape of radionuclide dispersion gradually transforms from flat to semicircular with vegetation barrier growth, but this could cause a greater radioactive accumulation effect near the leakage point, and the maximum concentration of leaked 131I reached 0.54 kBq·m-3 for leaked radionuclides from the Type II vessel under vegetation barriers of 23 years. In addition, improvement suggestions based on the proposed method are presented, which will enable the Standards Institutes to apply the research methodologies described herein across various scenarios. ENVIRONMENTAL IMPLICATION: Compared to nonradioative pollutants, radioactive pollutants are intercepted by vegetation barriers and then migrate to the soil through leaves, stems, and roots, which can contaminate the surrounding environment. Considering the effects of vessel type and coniferous vegetation growth, a radionuclide dispersion model based on CFD was established. Suggestions for decontaminating radioactive pollution areas have been proposed based on the simulation results of hypothetical scenarios. The scenario applicability improvements based on the proposed model could assist relevant Standards Institutes to making improving measures.

SELECTION OF CITATIONS
SEARCH DETAIL