Saskatchewan

萨斯喀彻温省
  • 文章类型: Journal Article
    萨斯喀彻温省的Muskowekwan原住民(最惠国待遇),加拿大,集中体现了Saulteaux人民的持久力量和文化保护。这个社区面临着殖民创伤的持久影响,尤其是暴力,滥用,以及Muskowequan印第安人寄宿学校(MIRS)的学生所经历的逆境。机构领导人几十年的虐待造成了代际创伤,有助于当前的心理健康和福祉挑战。这项研究强调了社区在分享经验和塑造康复过程中的作用,以发展最惠国家庭康复和健康中心,以应对社区的紧急关注。它考察了正义的整合,多样性,Equity,和包容性(J-DEI)原则和文化响应性,以促进社区复原力和心理健康。
    采用基于社区的参与式研究框架,这项研究采用了混合方法,包括社区参与会议和调查。与最惠国领导层密切合作,它借鉴了土著健康和研究领导人Author2和Author1的专业知识。研究采用定性和定量的数据收集,强调社区投入和领导力在塑造研究过程和成果方面的重要性。
    研究结果强调了社区对精神和文化实践的承诺,将其作为重要的治疗组成部分。在最惠国社区对MIRS挥之不去的影响的认识提高的同时,这些见解为中心的发展提供了信息,确保它包含了社区对文化相关治疗实践的愿望。2023年2月,该中心一期的盛大开幕是向前迈出的重要一步,象征着向尊重复原力的整体社区健康迈进,整体健康,文化的连续性。
    本案例研究有助于综合文献,满足土著人民和社区需求的文化响应型医疗保健模式。该研究提供了指导中心未来计划和服务的见解,确保他们在文化上是量身定制的,并满足社区的需求。通过说明传统智慧和当代健康实践促进福祉的潜力,案例研究倡导在土著环境中采取整体治疗方法,为全球类似举措提供可复制的框架。
    UNASSIGNED: The Muskowekwan First Nation (MFN) in Saskatchewan, Canada, epitomizes the enduring strength and cultural preservation of the Saulteaux people. This community faces the lasting effects of colonial trauma, especially the violence, abuse, and adversity experienced by students at the Muskowequan Indian Residential School (MIRS). Decades of abuse by institutional leaders caused generational trauma, contributing to current mental health and well-being challenges. This study highlights the community\'s role in sharing experiences and shaping healing processes to develop the MFN Family Healing and Wellness Centre in response to urgent community concerns. It examines the integration of Justice, Diversity, Equity, and Inclusion (J-DEI) principles and cultural responsiveness in fostering community resilience and mental well-being.
    UNASSIGNED: Adopting a community-based participatory research framework, this study employs a mixed-methods approach, including community engagement sessions and surveys. Collaborating closely with the MFN leadership, it draws upon the specialized expertise of Author2 and Author1, leaders in Indigenous health and research. The research uses qualitative and quantitative data collection, emphasizing the importance of community input and leadership in shaping the research process and outcomes.
    UNASSIGNED: Findings emphasize the community\'s commitment to spiritual and cultural practices as vital healing components. Amidst the heightened awareness of the lingering effects of the MIRS within the MFN community, these insights informed the development of the Centre, ensuring it incorporates the community\'s desires for culturally relevant healing practices. The grand opening of Phase I of the Centre in February 2023 emerged as a significant step forward, symbolizing a move towards holistic community health that honors resilience, holistic wellness, and cultural continuity.
    UNASSIGNED: This case study contributes to the literature on integrated, culturally responsive healthcare models that address the needs of Indigenous peoples and communities. The study provides insights to guide the Centre\'s future programs and services, ensuring they are culturally tailored and responsive to the community\'s needs. By illustrating the potential for traditional wisdom and contemporary health practices to foster well-being, the case study advocates for holistic approaches to healing in Indigenous settings, offering a replicable framework for similar initiatives globally.
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  • 文章类型: Journal Article
    在加拿大女性的所有癌症中,发病率增长最快的是宫颈癌。这项试点研究的目的是评估HPV自我取样如何提高萨斯喀彻温省城市和农村地区宫颈癌筛查的参与度。加拿大人口最稀少的省份之一。研究组由n=250名参与者组成,他们用说明书邮寄了自我擦拭工具包,n=250名参与者在6个城市和农村诊所分发了工具包。纳入标准选择30-69岁的萨斯喀彻温省居民至少5年有效健康保险的受试者。有一个子宫颈,并且在4年内没有宫颈癌筛查记录。使用罗氏分子诊断Cobas4800®系统分析返回的样品的特定HPV毒株。总有效率为~16%,对讲义分发的响应大约是mailout的两倍。虽然HPV阳性在分布组中没有差异,与任何其他诊所和所有联合接种的所有患者相比,一家特定市中心诊所的参与者报告的至少一种HPV毒株阳性显著更高.对于这个高危人群来说,亲自发放自我取样试剂盒可能是改善筛查的最有效手段.
    Of all cancers in female Canadians, the most rapidly increasing incidence is that of cervical cancer. The objective of this pilot study was to assess how HPV self-sampling might improve cervical cancer screening participation in both urban and rural settings in Saskatchewan, one of the most sparsely populated provinces in Canada. Study groups consisted of n = 250 participants to whom self-swabbing kits were mailed with instructions and n = 250 participants to whom kits were handed out in 6 urban and rural clinics. The inclusion criteria selected subjects aged 30-69 years who were Saskatchewan residents for at least 5 years with valid health coverage, had a cervix, and had no record of cervical cancer screening in 4 years. The returned samples were analyzed for specific HPV strains using the Roche Molecular Diagnostics Cobas 4800® System. The overall response rate was ~16%, with the response to the handout distribution being roughly double that of the mailout. While HPV positivity did not differ across the distribution groups, participants at a specific inner-city clinic reported significantly higher positivity to at least one HPV strain as compared to any other clinic and all mailouts combined. For this high-risk population, in-person handout of self-sampling kits may be the most effective means of improving screening.
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  • 文章类型: Journal Article
    背景:我们工作的目的是研究农村和城市地区的创伤患者之间的差异,这些患者出现在萨斯喀彻温省的三级创伤中心,加拿大。
    方法:我们确定了从2020年4月1日至2022年3月31日在皇家大学医院(RUH)出现的所有1级创伤激活的历史队列。我们将队列分为两组(城市和农村),根据创伤的位置。感兴趣的主要结果是30天死亡率。次要结果是住院时间,出院后30天内再次入院,和并发症发生率。
    结果:农村地区的创伤患者更年轻(34.1v.37岁;p=0.002),更可能是男性(80.3%v.74.4%;p=0.040),具有较高的损伤严重度评分(12.3v.8.3;p<0.0001)。城市地区的创伤患者更容易遭受穿透性创伤(42.5%对28.5%;p<0.0001)。我们发现两组之间的发病率和死亡率没有差异,但是农村创伤组的中位住院时间更长(5v.3d;p<0.0007)。
    结论:尽管我们确定了患者人口统计学的关键差异,损伤类型,和损伤的严重程度,城乡创伤组的结局大致相似.这一发现与加拿大和美国的可比研究相矛盾,这一差异可能归因于农村创伤组没有纳入院前死亡率。来自农村地区的创伤患者的住院时间更长,这可能归因于居住在远程的患者的处置挑战。
    BACKGROUND: The aim of our work was to examine differences between trauma patients in rural and urban areas who presented to a tertiary trauma centre in the province of Saskatchewan, Canada.
    METHODS: We identified a historical cohort of all level 1 trauma activations presenting to Royal University Hospital (RUH) from April 1, 2020, to March 31, 2022. We divided the cohort into 2 groups (urban and rural), according to the trauma location. The primary outcome of interest was 30-day mortality. Secondary outcomes of interest were hospital length of stay, readmission to hospital within 30 days of discharge, and complication rate.
    RESULTS: Trauma patients in rural areas were younger (34.1 v. 37 yr; p = 0.002) and more likely to be male (80.3% v. 74.4%; p = 0.040), with higher Injury Severity Scores (12.3 v. 8.3; p < 0.0001). Trauma patients in urban areas were more likely to sustain penetrating trauma (42.5% v. 28.5%; p < 0.0001). We saw no differences in morbidity and mortality between the 2 groups, but the rural trauma group had longer median lengths of stay (5 v. 3 d; p < 0.0007).
    CONCLUSIONS: Although we identified key differences in patient demographics, injury type, and injury severity, outcomes were largely similar between the urban and rural trauma groups. This finding contradicts comparable studies within Canada and the United States, a difference that may be attributable to the lack of inclusion of prehospital mortality in the rural trauma group. The longer length of stay in trauma patients from rural areas may be attributed to disposition challenges for patients who live remotely.
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  • 文章类型: Journal Article
    泥沙运输是一个复杂的,多维过程。随着近几十年来计算能力的进步和计算机应用的复杂性,对土壤侵蚀和泥沙运移进行详细分析和模拟已经成为可能。这项研究的主要目的是研究和预测人类活动对泥沙运输的潜在影响。这是通过分析E.B.坎贝尔大坝下方的萨斯喀彻温河和萨斯喀彻温河三角洲的泥沙运输来实现的。水文工程中心的河流分析系统(HEC-RAS)被部署以确定泥沙输送能力和估计侵蚀,沉降,和河床的变化。横截面数据,流数据,沉积物数据与HEC-RAS结合使用。模拟结果表明,E.B.坎贝尔大坝下方的泥沙输送受到限制,导致明显的沉积物侵蚀。选定的研究区域在高流量时期经历了严重的侵蚀,特别是在洪水的情况下。在2012年至2019年之间,选定调查地点的河床高程下降了约0.45m。研究结果证实,萨斯喀彻温河及其三角洲受到人类活动的影响。E.B.坎贝尔大坝下方的潜在侵蚀和沉积已针对选定地点进行了模拟。目的是为决策者或相关利益相关者提供有关如何调整大坝运营以减少侵蚀,同时维持水文,生态,和人类活动的环境结果。
    Sediment transport is a complex, multi-dimensional process. With the advancement in computing power and sophistication of computer applications over recent decades, it has become possible to conduct detailed analysis and simulations of soil erosion and sediment transport. The primary objective of this study was to examine and predict the potential influence of human activities on sediment transport. This was achieved by analyzing sediment transport in the Saskatchewan River beneath the E.B. Campbell Dam and in the Saskatchewan River Delta. The Hydrologic Engineering Center\'s-River Analysis System (HEC-RAS) was deployed to ascertain the sediment transport capacity and estimate erosion, sedimentation, and riverbed changes. Cross-sectional data, flow data, and sediment data were used in conjunction with HEC-RAS. The simulation results reveal that sediment transport below the E.B. Campbell Dam is limited, leading to notable sediment erosion. The selected study area has witnessed significant erosion during high-flow periods, particularly in the event of floods. Between 2012 and 2019, the riverbed elevation at the selected survey site decreased by approximately 0.45 m. The study findings corroborate that the Saskatchewan River and its delta have been impacted by human activities. Potential erosion and deposition below the E.B. Campbell Dam have been simulated for the selected site. The aim is to provide decision-makers or related stakeholders with insight into how dam operations can be adjusted to decrease erosion while sustaining hydrological, ecological, and environmental outcomes from human activities.
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  • 文章类型: Journal Article
    性传播感染(STIs)在加拿大的年轻人中很常见,并且患病率正在上升。评估年轻人的性健康知识对于制定有效的性传播感染教育策略至关重要。然而,关于加拿大大学运动员性健康知识的研究有限,他们增加了性传播感染的风险。
    确定大学运动员对性传播感染的感知和客观知识水平,以及他们对性健康信息的知识翻译的首选方法。
    萨斯喀彻温大学和里贾纳大学的USPORTS运动员应邀在2022年1月至3月之间完成电子调查。参与者完成了性传播疾病知识问卷(STD-KQ),并自我报告了他们对答案的信心。参与者被问及测试信念,在那里他们接收他们的性健康信息和他们首选的性传播感染信息传递格式。
    一百名参与者完成了调查(14%的响应率)。参与者自我报告的STI知识得分中位数为2.8分(四分位距[IQR]:2.4-3.6)。在STD-KQ(IQR:8-17)中,参与者的中位数为27分(44%)中的12分。67%的参与者从医生那里获得了性健康信息。61%的参与者认为尴尬可能会阻止他们接受测试或筛查。三种最流行的健康信息共享方法是在线模块(34%),现场讲座/会议(24%)和自拍视频(20%)。
    这项研究强调了大学运动员的STI知识有限。全面的在线教育干预措施可能有效地提高知识水平。
    UNASSIGNED: Sexually transmitted infections (STIs) are common in young adults in Canada and their prevalence is rising. Assessing sexual health knowledge among young adults is essential for developing effective STI education strategies. However, there is limited research on the sexual health knowledge of Canadian university athletes, who have increased risks of STIs.
    UNASSIGNED: To determine perceived and objective levels of knowledge on STIs among university athletes and their preferred methods of knowledge translation regarding sexual health information.
    UNASSIGNED: U SPORTS athletes at the University of Saskatchewan and the University of Regina were invited to complete an electronic survey between January-March 2022. Participants completed the Sexual Transmitted Disease Knowledge Questionnaire (STD-KQ) and self-reported their confidence in their answers. Participants were asked about testing beliefs, where they receive their sexual health information and their preferred format for STI information delivery.
    UNASSIGNED: One hundred participants completed the survey (14% response rate). Participants had a median composite self-reported STI knowledge score of 2.8 out of 5 (interquartile range [IQR]: 2.4-3.6). The median participant scored 12 out of 27 (44%) on the STD-KQ (IQR: 8-17). Sixty-seven percent of participants received sexual health information from a physician. Sixty-one percent of participants believed embarrassment may prevent them from getting tested or screened. The three most popular methods of health information sharing were online modules (34%), in-person lectures/conferences (24%) and self-paced videos (20%).
    UNASSIGNED: This study highlighted that STI knowledge is limited in university athletes. Comprehensive online educational interventions may be effective at improving knowledge.
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  • 文章类型: Journal Article
    目的:比较有症状和无症状患者血液透析导管内的微生物群落,以确定它们的差异。材料和方法:在18个月的时间内,从萨斯喀彻温省卫生局的患者中取出了导管(n=41)。冲洗体内的导管部分,并使用培养物依赖性和培养物无关分析评估内容物。结果:所有导管均被细菌定植,基于微生物群落和检测到的单个物种的群体之间存在相当大的重叠。通过测序检测到更多的革兰氏阴性物种,而主要培养革兰氏阳性菌株。抗生素耐药性和生物膜形成普遍存在,与任一导管组无关。结论:每套导管均检出常见病原菌,因此,根据微生物学预测感染是困难的。
    许多患者使用导管来帮助清洁血液,一个叫做血液透析的过程.导管的使用也与并发症有关,比如血液感染。我们观察了与感染患者(n=21)的导管相关的细菌类型,并将其与没有感染迹象的患者(n=20)的导管进行了比较。一旦从病人身上移走,我们冲洗了每个导管,并试图在不同的条件下培养细菌。我们还观察了导管内的DNA,以确定存在的细菌种类。所有41个导管都有细菌,并且检测到许多常见物种。我们检测到已知会导致疾病的物种,如金黄色葡萄球菌,表皮葡萄球菌,大肠杆菌和假单胞菌,肠杆菌,摩根菌属和窄食单胞菌属。金黄色葡萄球菌仅从感染的患者生长。发现对抗生素的抗性在从导管生长的细菌中很常见。这似乎不受患者是否感染的影响。最后,我们确定了几个导管,其中两个物种,表皮葡萄球菌和铜绿假单胞菌,一起被发现。我们的主要结论是,细菌通常存在于用于血液透析的导管内,不管患者是否被感染。
    Aim: To compare the microbial communities inside hemodialysis catheters from symptomatic and asymptomatic patients to determine their differences.Materials & methods: Catheters (n = 41) were removed from patients in the Saskatchewan Health Authority over an 18-month period. The catheter section inside the body was flushed and the contents were evaluated using culture-dependent and culture-independent analysis.Results: All catheters were colonized by bacteria, with considerable overlap between groups based on microbial communities and the individual species detected. More Gram-negative species were detected by sequencing, whereas predominantly Gram-positive strains were cultured. Antibiotic resistance and biofilm formation was widespread and not correlated with either catheter group.Conclusion: Common pathogens were detected in each set of catheters, therefore predicting infections based on the microbiology is difficult.
    Many patients use catheters to help clean their blood, a process called hemodialysis. The use of catheters is also associated with complications, such as blood infections. We looked at the types of bacteria associated with catheters from patients who had infections (n = 21) and compared them to catheters from patients who had no signs of infection (n = 20). Once removed from the patient, we flushed out each catheter and tried to grow bacteria in different conditions. We also looked at DNA from within the catheter to identify bacterial species that were present. All 41 catheters had bacteria and there were many common species detected. We detected species known to cause illness such as Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli and Pseudomonas, Enterobacter, Morganella and Stenotrophomonas species. S. aureus was only grown from patients that had infections. Resistance to antibiotics was found to be common in bacteria grown from catheters. This did not seem to be influenced by whether patients were infected or not. Finally, we identified several catheters where two species, S. epidermidis and P. aeruginosa, were detected together. Our main conclusion was that bacteria are commonly present inside catheters that are used for hemodialysis, regardless of whether patients are infected or not.
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  • 文章类型: Journal Article
    The Saskatchewan Dental Plan in Canada was the first universal dental care plan for children in North America. Based on a similar New Zealand program, it would take over two decades from the time that the provincial government first considered the New Zealand policy until a final decision was made to implement the program. This article reviews the reasons for the long gestation of the policy, including the hostility of organized dentistry in Saskatchewan and Canada and the caution of the government\'s bureaucracy. It would take until a social democratic government was elected in 1971 before the political stream joined with the pre-existing problem and policy streams to open the policy window. Established in 1974, the program was terminated in 1987 due to opposition of organized dentistry combined with the pro-market ideology of a newly elected government.
    Résumé. La Saskatchewan a été la première à instaurer un régime de soins dentaires universels pour les enfants en Amérique du Nord, le Saskatchewan Dental Plan. S’inspirant d’un programme semblable établi en Nouvelle-Zélande, le gouvernement provincial allait mettre vingt ans, entre le début de l’évaluation de la politique néozélandaise et sa décision, à implanter son programme. Cet article passe en revue les raisons de cette longue gestation, notamment l’hostilité du milieu bien organisé de la médecine dentaire en Saskatchewan et au Canada et la prudence des fonctionnaires gouvernementaux. Il allait falloir l’élection d’un gouvernement social-démocrate, en 1971, pour que le milieu politique s’empare du problème et des politiques existantes et que s’ouvre une fenêtre d’opportunité politique. Établi en 1974, le programme a été aboli en 1987, renversé par l’opposition combinée de la dentisterie organisée et de l’idéologie du libre marché prônée par le gouvernement nouvellement élu.
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  • 文章类型: Journal Article
    这项定性研究调查了萨斯喀彻温省城市原住民的观点,加拿大,关于他们对传统食物的消费。通过深入,对萨斯卡通的14名参与者进行了半结构化访谈,Regina,还有阿尔伯特王子,这项研究旨在发现好处,风险,以及与获取和消费传统食品相关的障碍。与会者强调了传统食品的营养优势,如更高的营养密度和没有工业添加剂,这与改善健康结果和与土著生物学的一致性有关。该研究还强调了传统食品在通过食品共享和代际知识转移的做法保持文化认同和促进社区联系方面的重要作用。然而,确定了重大挑战,包括进入的经济和物理障碍,环境退化,以及限制城市环境中传统食品供应的监管问题。研究结果表明,复杂的景观在城市环境中既保留了文化习俗,又受到了挑战。这项研究有助于更广泛地了解土著居民在面对现代经济和环境压力时如何应对其烹饪遗产的保护,为旨在支持土著粮食主权的政策和基于社区的干预措施提供见解。
    This qualitative study investigates the perspectives of urban Indigenous individuals in Saskatchewan, Canada, regarding their consumption of traditional foods. Through in-depth, semi-structured interviews with 14 participants across Saskatoon, Regina, and Prince Albert, the research aimed to uncover the benefits, risks, and barriers associated with acquiring and consuming traditional foods. Participants emphasized the nutritional advantages of traditional foods, such as higher nutrient density and absence of industrial additives, which they linked to improved health outcomes and alignment with Indigenous biology. The study also highlighted the vital role of traditional foods in maintaining cultural identity and fostering community connections through practices of food sharing and intergenerational knowledge transfer. However, significant challenges were identified, including economic and physical barriers to access, environmental degradation, and regulatory issues that restrict the availability of traditional foods in urban settings. The findings suggest a complex landscape where cultural practices are both preserved and challenged within the urban environment. This study contributes to the broader understanding of how Indigenous populations navigate the preservation of their culinary heritage in the face of modern economic and environmental pressures, providing insights for policy and community-based interventions aimed at supporting Indigenous food sovereignty.
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  • 文章类型: Journal Article
    城市土著居民在维持传统饮食习惯方面遇到了独特的挑战,复杂的社会经济和环境因素和现代城市生活方式。这项定性研究探讨了人们对健康饮食的看法,以及这种做法的促进者和障碍,在萨斯卡通的城市土著人民中,Regina,阿尔伯特王子通过虚拟采访,我们吸引了来自这些城市的14名参与者。利用NVivo进行主题编码,我们应用归纳主题分析来揭示相关主题。这项研究强调了对营养丰富的偏好,自然,和最低限度加工的食品,非常重视将传统的土著食物纳入饮食。这些偏好与文化认同密切相关,并强调了传统食品在维护文化遗产和促进福祉方面的重要性。尽管这些传统食物的内在价值,参与者在健康饮食方面面临着几个障碍,包括经济限制,获得传统食物的机会有限,以及历史创伤的心理影响。然而,社区和家庭支持等促进者,参与传统食品实践,越来越多的营养知识意识被认为是支持健康饮食选择的关键。这项研究强调了文化之间复杂的相互作用,经济,和环境因素在塑造城市土著人民的饮食习惯。
    Urban Indigenous populations encounter distinctive challenges in maintaining traditional dietary practices, compounded by the complexities of socio-economic and environmental factors and the modern urban lifestyle. This qualitative study explores the perceptions of healthy eating, along with the facilitators and barriers to such practices, among urban Indigenous peoples in Saskatoon, Regina, and Prince Albert. Through virtual interviews, we engage 14 participants from these cities. Utilizing NVivo for thematic coding, we apply inductive thematic analysis to reveal relevant themes. The study highlights a preference for nutrient-rich, natural, and minimally processed foods, with a significant emphasis on incorporating traditional Indigenous foods into diets. These preferences are deeply entwined with cultural identity and underscore the importance of traditional foods in maintaining cultural heritage and promoting well-being. Despite the intrinsic value of these traditional foods, participants face several barriers to healthy eating, including economic constraints, limited access to traditional foods, and the psychological impacts of historical trauma. Nevertheless, facilitators such as community and family support, engagement in traditional food practices, and a growing awareness of nutritional knowledge are identified as being crucial in supporting healthy dietary choices. This research underscores the complex interplay of cultural, economic, and environmental factors in shaping the dietary practices of urban Indigenous peoples.
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  • 文章类型: Journal Article
    磷(P)肥料通过纠正碳磷比失衡来促进土壤石油烃(PHC)的生物修复。虽然这些投入创造了有利于微生物生长的条件,降解率低的站点或整个站点的区域(即,\"stalled\")发生的原因不明。我们假设土壤条件限制了磷的生物利用度,导致PHC生物修复的停滞,并添加正确的P修正案重新开始微生物活性。从萨斯喀彻温省的四个冷钙质PHC影响的地点收集土壤并对其进行表征,加拿大,正在进行生物修复。广义线性混合模型确定,降解速率较低的区域具有中性pH,具有较高的磁值和盐度值。在随后的实验室实验中,在活性物质内以更高的速率降解的苯的比例(即,较高的降解率)比停滞的土壤,从而遵循模型预测(p值=0.19,Kruskal-Wallis)。通过用五种处理之一掺杂停滞的土壤(n=3)测试了不同磷改良剂的PHC降解效率:0(对照),0(高压灭菌控制),或50毫克磷酸盐kg-1土壤作为二磷酸钠,磷酸三乙酯,或者三聚磷酸盐.三聚磷酸盐在一种停滞的土壤中加速了苯的降解(75.5±5.4%)(Outlook323),而在另一种土壤中(Allan917)的降解没有显着增加(43.9±9.4%)。或者,最终样品(Davidson421)具有最大的苯去除率,没有修正。这意味着土壤P的生物利用度可能不是微生物活性降低的唯一原因。因此,将模型输出与矿物学和微生物学研究相结合,可以提高这些冷钙质土壤中PHC的生物降解率。
    Phosphorus (P) fertilizers promote soil petroleum-hydrocarbon (PHC) bioremediation by correcting carbon-to-P ratio imbalances. While these inputs create conditions favorable to microbial growth, areas of a site or an entire site with low degradation rates (i.e., \"stalled\") occur for unknown reasons. We hypothesized that soil conditions limit P bioavailability, leading to stalls in PHC bioremediation, and adding the correct P amendment restarts microbial activity. Soils were collected and characterized from four cold calcareous PHC-impacted sites in Saskatchewan, Canada, undergoing bioremediation. A generalized linear mixed model identified that regions with lower degradation rates possessed a neutral pH with high magnetic and salinity values. In a subsequent laboratory experiment, the proportion of benzene degraded at greater rates within active (i.e., higher degradation rates) than stalled soils, thereby following model predictions (p-value = 0.19, Kruskal-Wallis). The PHC degradation efficiency of different P amendments was tested by doping stalled soils (n = 3) with one of five treatments: 0 (control), 0 (autoclaved control), or 50 mg phosphate kg-1 soil as sodium diphosphate, triethyl phosphate, or tripolyphosphate. Tripolyphosphate accelerated benzene degradation (75.5 ± 5.4%) in one stalled soil (Outlook 323) and increased degradation non-significantly (43.9 ± 9.4%) in another (Allan 917). Alternatively, the final sample (Davidson 421) possessed the greatest benzene removal with no amendments. This implies that soil P bioavailability may not be the sole cause of decreased microbial activity. Accordingly, combining model outputs with mineralogy and microbiology investigations could enhance PHC biodegradation rates in these cold calcareous soils.
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