infiltration

浸润
  • 文章类型: Journal Article
    为了调查术前肩关节活动范围(ROM),会增加术后肩关节僵硬的风险,或者是否与其他术前患者特征相关。
    作者回顾性分析了由4名外科医生进行肩袖修复的372个肩膀,2010年1月至2011年1月。所有患者均在3个月和6个月时由2名独立观察者收集ROM,包括主动向前高程(AFE),被动前高程(PFE),和外部旋转(ER),以及主观肩值(SSV)。
    在372名患者的初始队列中,10人失去随访(2.7%),在最少6个月的随访时间内,将362例患者的最终队列用于结局评估。362名患者中,281不需要皮质类固醇浸润,68例接受皮质类固醇浸润治疗肩关节僵硬,无明显原因,13人由于其他原因接受了皮质类固醇浸润。没有一个变量与肩关节僵硬的浸润有关。老年患者的SSV评分更高(β=0.3;95%CI[0.1,0.6];P=0.015),而体力劳动和重复性工人的SSV评分均较低(β=-10.7;95%CI[-15.8,-5.6];P<.001,β=-10.2;95%CI[-15.1,-5.3];P<.001)。
    术后SSV与年龄显著相关,以及手动或重复性工作。此外,术后PFE,AFE,ER与术前PFE显著相关。最后,术后3个月和6个月,肩关节僵硬需要浸润的患者PFE明显降低,AFE,和ER与不需要浸润的患者相比。
    IV,案例系列。
    UNASSIGNED: To investigate whether the preoperative shoulder range of motion (ROM), would increase the risk of postoperative shoulder stiffness, or whether it would be associated with other preoperative patient characteristics.
    UNASSIGNED: The authors retrospectively analysed the 372 shoulders that underwent rotator cuff repair by 4 surgeons, between January 2010 and January 2011. All patients were followed up at 3 and 6 months by 2 independent observers to collect the ROM, including active forward elevation (AFE), passive forward elevation (PFE), and external rotation (ER), as well as subjective shoulder value (SSV).
    UNASSIGNED: Of the initial cohort of 372 patients, 10 were lost to follow-up (2.7%), leaving a final cohort of 362 patients available for outcome assessment at a minimum follow-up of 6 months. Of the 362 patients, 281 did not require corticosteroid infiltration, 68 received corticosteroid infiltrations for shoulder stiffness with no apparent cause, and 13 received corticosteroid infiltrations for other reasons. None of the variables were associated with infiltration for shoulder stiffness. Older patients had greater SSV scores (β = 0.3; 95% CI [0.1, 0.6]; P = .015), while both manual and repetitive workers had lower SSV scores (β = -10.7; 95% CI [-15.8, -5.6]; P < .001, and β = -10.2; 95% CI [-15.1, -5.3]; P < .001).
    UNASSIGNED: Postoperative SSV was significantly associated with age, as well as manual or repetitive work. Furthermore, postoperative PFE, AFE, and ER were significantly associated with preoperative PFE. Finally, at 3 and 6 months postoperative, patients who required infiltration for shoulder stiffness had significantly lower PFE, AFE, and ER compared to patients who did not require infiltration.
    UNASSIGNED: IV, Case series.
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  • 文章类型: Journal Article
    背景:当它们与附近的心血管结构接触时,源自或涉及纵隔的恶性肿瘤代表了诊断和治疗的挑战。我们旨在测试电影磁共振成像(cine-MRI)在对比增强计算机断层扫描(CT)扫描发现不确定或模棱两可的情况下检测心血管结构浸润的诊断准确性。
    方法:50例在术前胸部CT扫描阶段被怀疑侵犯纵隔心血管结构的肿瘤患者在我们机构手术前接受了cine-MRI检查。术中发现和术后组织学报告用作参考标准来定义浸润。还计算了14例患者的同质样本的CT扫描和电影MRI的观察者之间和观察者之间的一致性。
    结果:Cine-MRI具有更高的阴性预测值(93%vs.54%,p<0.001)比CT扫描,更高的灵敏度(91%与16%,p<0.001),以及更高的准确性(66%与50%,p<0.001)检测心血管侵袭。Cine-MRI还显示出更好的观察者之间和观察者之间的浸润检测一致性。
    结论:在纵隔或肺部肿瘤的心血管浸润的术前评估中,电影MRI优于常规对比增强胸部CT扫描,使其在胸部CT扫描阶段发现模棱两可的患者的术前分期和评估中成为有用的成像方式。
    BACKGROUND: Malignant neoplasms originating from or involving the mediastinum represent a diagnostic and therapeutic challenge when they are in contact with nearby cardiovascular structures. We aimed to test the diagnostic accuracy of cine-magnetic resonance imaging (cine-MRI) in detecting the infiltration of cardiovascular structures in cases with uncertain or equivocal findings from contrast-enhanced Computed Tomography (CT) scanning.
    METHODS: Fifty patients affected by tumors with a suspected invasion of mediastinal cardiovascular structures at the pre-operative chest CT scan stage underwent cine-MRI before surgery at our Institution. Intraoperative findings and the histological post-surgical report were used as a reference standard to define infiltration. Inter- and intra-observer agreement for CT scans and cine-MRI were also computed over a homogenous sample of 14 patients.
    RESULTS: Cine-MRI had a higher negative predictive value (93% vs. 54%, p < 0.001) than CT scans, higher sensitivity (91% vs. 16%, p < 0.001), as well as greater accuracy (66% vs. 50%, p < 0.001) in detecting cardiovascular invasion. Cine-MRI also showed better inter- and intra-observer agreement for infiltration detection.
    CONCLUSIONS: Cine-MRI outperforms conventional contrast-enhanced chest CT scans in the preoperative assessment of cardiovascular infiltration by mediastinal or pulmonary tumors, making it a useful imaging modality in the preoperative staging and evaluation of patients with equivocal findings at the chest CT scan stage.
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  • 文章类型: Journal Article
    地下水是一种经常被忽视的资源,而其数量和质量的下降是全球关注的问题。为了保护和确保用作饮用水供应的地下水系统的数量和质量稳定,一种常见的方法是用地表水人工补给这些地下水,一个称为管理含水层补给(MAR)的过程,已经在全球使用了几十年。然而,用于MAR的地表水通常含有高浓度的新兴关注的人为化学物质(CEC),比如塑料,杀虫剂,药品和个人护理产品(PPCP),或全氟烷基和多氟烷基物质(PFAS)。当渗入地表水时,因此,MAR可以成为CECs进入地下水系统并最终提供饮用水的捷径。特别是PFAS是在MAR期间显示非典型运输模式的非常持久的污染物的一个例子,因此构成了对地下水和饮用水污染的风险。本系统综述通过查看(1)地表水中常见的CEC浓度,解决了CEC通过MAR系统的运输过程。(2)影响CEC运输的因素和MAR期间可能的滞留,如CECs的吸附和其他物理化学机制,生物和化学分解,或MAR系统的水文地质特性,和(3)通过MAR系统的关键污染物浸出以及可能的处理方案,以改善MAR期间CEC的保留。由于我们面临着对高质量饮用水的日益增长的需求,较低的CEC饮用水指南以及地表水中越来越多的已确定的CEC,最后,我们提出了一系列建议和未来的研究方向,以解决这些问题。其中包括需要定期监测计划,专门针对CECs,特别是尚未受到监管的CECs,(非常)持久和(非常)流动的污染物,比如PFAS,以及重新设计的MAR系统,以确保稳定的地下水和饮用水的数量和质量。
    Groundwater is an often-overlooked resource, while its declining quantity and quality is of global concern. To protect and ensure stable quantity and quality of groundwater systems used as drinking water supplies, a common method is to artificially recharge these groundwater supplies with surface water, a process called managed aquifer recharge (MAR), that has been used globally for decades. However, surface waters used for MAR often contain elevated concentrations of anthropogenic chemicals of emerging concern (CECs), such as plastics, pesticides, pharmaceuticals and personal care products (PPCPs), or per- and polyfluoroalkyl substances (PFAS). When infiltrating this surface water, MAR can thus act as a shortcut for CECs into groundwater systems and eventually drinking water supplies. Especially PFAS are an example of very persistent contaminants showing atypical transport patterns during MAR and thus posing a risk for ground- and drinking water contamination. This systematic review addresses the transport process of CECs through MAR systems by looking at (1) common CEC concentrations in surface waters, (2) factors affecting CEC transport and possible retention during MAR, such as sorption and other physio-chemical mechanisms of CECs, biological and chemical decomposition, or hydrogeological properties of the MAR system, and (3) key contaminants leaching through the MAR systems as well as possible treatment options to improve the retention of CECs during MAR. Since we are facing increasing needs for high quality drinking water, lower CEC drinking water guidelines as well as an increasing number of identified CECs in surface waters, we conclude with a series of recommendations and future research directions to address these issues. Those include the need for regular monitoring programs specifically addressing CECs and especially not yet regulated, (very) persistent and (very) mobile contaminants, such as PFAS, as well as redesigned MAR systems to ensure stable ground- and drinking water quantity and quality.
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  • 文章类型: Case Reports
    暂无摘要。
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  • 文章类型: Journal Article
    虽然关于下水道网络的现有研究已经探讨了地表水流入等主题,有限的研究已经深入研究了地下水入渗(GWI)。这项研究旨在填补这一空白,通过提供对下水道网络中GWI的定量分析以及当前状态的全面概述,局限性和未来前景,考虑到最相关的同行评审研究,包括83项研究。我们建议将现有研究分为两大类:(1)潜水带,和(2)渗流区。大多数研究都集中在后者,主要考虑降雨衍生的流入和渗透(RDII),包括地表水流入和GWI。每个的比例不经常分开;否则,可能会有一些假设,例如,在干燥的天气中,假设地表水流入量为零。我们还将所采用的方法从基于物理的数值模型中分为不同的类别,对于更简单的,例如水预算分析。事实上,可以采用多种方法来找到“城市地下水”或“城市岩溶”的复杂特征。调查结果显示下水道网络对GWI的脆弱性加剧,由于气候变化(CC)及其相关影响,例如海平面上升(SLR),使沿海城市成为最脆弱的地区。在未来的研究中,先发制人措施和网络监测的重要性,尤其是在海岸线附近,强调在CC的潜在影响下,在GWI的背景下确保下水道网络的弹性和适应性。然而,目前的监测实践缺乏对GWI数量进行时空分析的广泛证据。
    While existing studies on sewer networks have explored topics such as surface water inflow, limited research has delved into groundwater infiltration (GWI). This study aims to fill this void by providing a comprehensive overview of quantitative analyses of GWI in sewer networks plus current status, limitations and future perspectives, considering the most relevant peer-reviewed research, including 83 studies. We propose dividing the existing research into two main groups: (1) phreatic zone, and (2) vadose zone. Most research has focused on the latter, mainly considering Rainfall-Derived Inflow and Infiltration (RDII), including surface water inflow and GWI. The ratio of each is not frequently separated; otherwise, there may be some assumptions, e.g. in dry weather and assuming zero surface water inflow. We also divided the employed approaches in different categories from physically-based numerical models, to simpler ones, e.g. water budget analysis. In fact, a combination of approaches may be applied to find the intricate characteristics of \'urban groundwater\' or \'urban karst.\' The findings revealed a heightened vulnerability of sewer networks to GWI, due to climate change (CC) and its associated repercussions, e.g. sea level rise (SLR), making the coastal cities the most vulnerable regions. In future research, the criticality of pre-emptive measures and monitoring of networks, especially near the coastline, is emphasised to ensure the resilience and adaptability of sewer networks in the context of GWI amid the potential impacts of CC. However, current monitoring practices lack widespread evidence for spatiotemporal analysis of GWI quantity.
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  • 文章类型: Case Reports
    慢性粒细胞白血病(CML)是一种恶性增殖性疾病,涉及骨髓和淋巴系统。视网膜受累是CML患者的罕见表现形式。我们报告了一例49岁的女性,患有急性双侧视觉障碍。她的双眼初始视力为20/20。眼底检查发现多处淡黄色视网膜浸润,血管鞘,和周围硬化的血管。荧光素眼底血管造影显示双侧周边视网膜缺血。黄斑的光学相干断层扫描显示,分布在视网膜内层和外层以及视网膜下隙中的高反射病变大小不同。全身检查显示明显的白细胞增多,骨髓活检显示CML.CML患者很少出现眼部症状。早期识别和及时转诊对于挽救生命至关重要。
    Chronic myeloid leukemia (CML) is a malignant proliferative disorder involving the bone marrow and lymphatic system. Retinal involvement is a rare form of presentation in patients with CML. We report a case of a 49-year-old woman who presented with an acute bilateral visual disturbance. Her initial visual acuity was 20/20 in both eyes. Fundus examination revealed multiple yellowish retinal infiltrates, vascular sheathing, and peripheral sclerosed blood vessels. Fundus fluorescein angiography revealed bilateral peripheral retinal ischemia. Optical coherence tomography of the macula showed varying sizes of hyperreflective lesions distributed within the inner and outer retinal layers and in the subretinal space. Systemic workup revealed marked leukocytosis, and bone marrow biopsy revealed CML. Patients with CML can rarely present with ocular symptoms. Early recognition and prompt referral are crucial in lifesaving.
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  • 文章类型: Journal Article
    为了比较渗透,使用共聚焦显微镜成像,将自调理粘合剂系统与双固化树脂(树脂基水泥)结合到常规的环氧树脂基密封剂中,对牙根牙本质进行密封和微渗漏。
    26根被放大并消毒。用红色荧光团(罗丹明B)标记24颗牙齿的牙本质小管(两个样品作为对照)。在AH组(n=11)中,使用常规密封剂(AHPlus根管密封剂,DentsplyDeTrey)和RC组(n=11)中使用树脂基水泥(Parabond与Paracore结合,Coltène).然后将根水平切片并浸入H2O2中以除去未被密封剂固定的罗丹明B。用绿色荧光团(荧光素)标记空的牙本质空间,从而可以通过共聚焦显微镜评估浸润和微渗漏。另外两个样品在垂直方向上断裂以在SEM下观察。
    组RC在中三分之一的浸润明显多于AH组的中和顶三分之一。AH组的微渗漏明显高于RC组。SEM图像显示,与AH组相比,RC组中更多的牙质堵塞物和均匀的树脂层。
    与传统的环氧树脂基密封剂相比,树脂基水泥显示出有希望的结果。
    浸润和密封的根牙本质样品中的浸润和微渗漏高于根尖的三分之一。与使用基于环氧树脂的密封剂相比,使用自调理粘合剂系统和双固化树脂粘固剂进行的牙本质渗透和密封显示出较少的微泄漏。
    UNASSIGNED: To compare infiltration, sealing and microleakage in root dentin with a self-conditioning adhesive system combined with dual curing resin (resin-based cement) to a conventional epoxy-resin-based sealer using confocal microscopy imaging.
    UNASSIGNED: 26 roots were enlarged and disinfected. Dentin tubules of 24 teeth were labelled with a red fluorophore (Rhodamine B) (two samples served as controls). Root canal samples were sealed in group AH (n = 11) with a conventional sealer (AH Plus Root Canal Sealer, Dentsply DeTrey) and in group RC (n = 11) with a resin-based cement (Parabond combined with Paracore, Coltène). Roots were then sectioned horizontally and immersed in H2O2 to remove the Rhodamine B not fixed by the sealers. The empty dentin spaces were labeled with a green fluorophore (Fluorescein) enabling the evaluation of infiltration as well as microleakage by confocal microscopy. Two additional samples were fractured in vertical direction for observation under SEM.
    UNASSIGNED: Group RC presented significantly more infiltration in the middle third than in the middle and apical thirds of group AH. Microleakage was significantly higher in group AH than in group RC. SEM images revealed more dentin plugs and a homogenous resin layer in group RC in contrast to group AH.
    UNASSIGNED: The resin-based cement revealed promising outcomes compared to a traditional epoxy resin based sealer.
    Infiltration and microleakage in infiltrated and sealed root dentin samples are higher in middle than apical root thirds. Root dentin infiltration and sealing with a self-conditioning adhesive system and a dual-curing resin cement revealed less microleakage than with an epoxy-resin-based sealer.
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  • 文章类型: Journal Article
    下水道流入和渗透(I/I)的定量对于保持有效的废水运输和处理很重要。I/I流量可以基于流速和水质测量来量化。基于流速的方法需要使用昂贵且易于结垢的流量计来连续监测流速。相比之下,电导率和温度,作为简单的水质参数,更容易测量与更具成本效益和可靠的传感器。在这项研究中,开发了一种数据驱动的方法,用于基于在线电导率和温度测量来估计I/I流量。首先开发了基于Prophet模型的分析算法,以根据测得的温度和电导率时间序列重建基础废水流量(BWF)的温度和电导率曲线。该算法显示能够重建两个受监测集水区的BWF温度和电导率曲线。然后将重建的BWF数据合并到质量/能量平衡方程中,用于从测量的温度和电导率数据估计I/I流。最终使用对现实生活中的下水道网络的仿真研究证明了整体I/I量化方法,并针对已知的I/I流进行了验证。这项工作提供了一种基于简单测量的I/I定量的可靠方法。
    Quantitation of sewer inflow and infiltration (I/I) is important for maintaining efficient wastewater transport and treatment. I/I flows can be quantified based on flow rate and water quality measurements. Flow rate-based methods require continuous monitoring of flow rates using flow meters that are costly and prone to fouling. In comparison, conductivity and temperature, as simple water quality parameters, are more easily measurable with more cost-effective and reliable sensors. In this study, a data-driven methodology is developed for estimating I/I flows based on online conductivity and temperature measurements. A Prophet-model-based analytic algorithm is first developed to reconstruct the temperature and conductivity profiles of the base wastewater flow (BWF) from the measured temperature and conductivity time series. The algorithm is shown to be able to reconstruct the BWF temperature and conductivity profiles in two monitored catchments. The reconstructed BWF data are then incorporated into mass/energy balance equations for estimating I/I flows from the measured temperature and conductivity data. The overall I/I quantification method is finally demonstrated using simulation studies of a real-life sewer network and validated against the known I/I flows. This work provides a reliable method for I/I quantification based on simple measurements.
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  • 文章类型: Journal Article
    黄土结构是决定其稳定性的物理关键因素,由宏观孔隙组成,松散的纹理,和水的敏感性。为了研究原状黄土内部由水入渗引起的结构变化过程,采用机械CT和模拟试验研究了原状黄土在水入渗前后的结构变化特征和影响。颗粒状态的变化如下:入渗后黄土颗粒等效直径的峰值频率点在16.75~23.76μm之间,被侵蚀的细颗粒主要由细颗粒组成。通过水渗透去除较小的黄土颗粒,导致土壤颗粒粗化。黄土颗粒的球形度从球形孔逐渐变为角孔和树枝状孔。粒子倾斜角过渡到大于70°的范围,其比例约为61%。孔隙结构变化如下:黄土入渗后孔隙度增加约20%,中孔和大孔的孔面积比的增加高于微孔。此外,小孔隙比原状黄土的原始状态增加了5倍以上。渗透后连通的孔隙膨胀到初始状态的60%以下到90%以上,因此,增加原状黄土的主导渗流通道。颗粒和孔隙率的这些变化进一步增加了水的过滤强度,并促进了细颗粒(主要是淤泥颗粒)的迁移,连接黄土巨灾,是黄土沉降和边坡失稳的主要原因。水渗入黄土的过程,黄土湿陷性的机理,并讨论了盐度对黄土结构和强度的影响。
    Loess structure is the physical key factor that determines its stability and consists of macro-pores, loose texture, and water sensitivity. The structural change characteristics and effects of the undisturbed loess before and after water infiltration are studied using mechanical CT and simulation tests in order to study the structural change process within the undisturbed loess caused by water infiltration. The change in particle state is as follows: the peak frequency point of the equivalent diameter of the loess particles after infiltration ranged from 16.75 to 23.76 μm, and the eroded fine particles consisted primarily of fine particles. The smaller loess particles are removed by water infiltration resulting in coarsening of soil particles. The sphericity of the loess particles gradually changes from spherical pores to angular and dendritic pores. The particle inclination angle transitions to a range greater than 70°, and its proportion is approximately 61%. The change in pore structure is as follows: The loess porosity after infiltration increased by approximately 20%, and the increase in the pore area ratio of the mesopores and the macropores was higher than that of the micropores. Additionally, the small pores increased by more than 5 times the original state of the undisturbed loess. The connected pores expanded less than 60% of the initial state to more than 90% after infiltration, thus, increasing the dominant seepage channel of the undisturbed loess. These changes in particle and porosity further increase the water filtration intensity and promote the migration of fine particles (mainly silt particles), linking loess catastrophes and are the leading cause of loess settlement and slope instability. The process of water infiltration into the loess, the mechanism of loess collapsibility, and the influence of salinity on the loess structure and strength are discussed in this study.
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  • 文章类型: Journal Article
    腹主动脉瘤(AAA)是一种常见且可能危及生命的疾病。慢性主动脉炎症与AAA的发病密切相关。神经损伤诱导蛋白1(NINJ1)被认为是炎症过程的重要调节因子。然而,NINJ1在AAA形成中的确切参与仍未被探索。本研究发现NINJ1的表达水平升高,以及人和血管紧张素II(AngII)诱导的鼠AAA病变中巨噬细胞的特异性表达水平。此外,产生ApoE-/-背景上的Ninj1flox/flox和Ninj1flox/floxLyz2-Cre小鼠,和巨噬细胞NINJ1缺乏抑制AAA形成和减少巨噬细胞浸润在小鼠注射AngII。始终如一,在体外抑制巨噬细胞中NINJ1的表达水平显著限制了巨噬细胞的粘附和迁移,同时减弱巨噬细胞促炎反应。大量RNA测序和通路分析揭示NINJ1可以通过TLR4/NF-κB/CCR2信号通路调节巨噬细胞浸润。蛋白质相互作用分析表明,NINJ1可以通过与TLR4的抑制性相互作用蛋白ANXA2竞争性结合来激活TLR4。这些发现表明,NINJ1可以通过促进巨噬细胞浸润和促炎反应来调节AAA的形成,强调NINJ1作为AAA治疗靶点的潜力。
    Abdominal aortic aneurysm (AAA) is a common and potentially life-threatening condition. Chronic aortic inflammation is closely associated with the pathogenesis of AAA. Nerve injury-induced protein 1 (NINJ1) is increasingly acknowledged as a significant regulator of the inflammatory process. However, the precise involvement of NINJ1 in AAA formation remains largely unexplored. The present study finds that the expression level of NINJ1 is elevated, along with the specific expression level in macrophages within human and angiotensin II (Ang II)-induced murine AAA lesions. Furthermore, Ninj1flox/flox and Ninj1flox/floxLyz2-Cre mice on an ApoE-/- background are generated, and macrophage NINJ1 deficiency inhibits AAA formation and reduces macrophage infiltration in mice infused with Ang II. Consistently, in vitro suppressing the expression level of NINJ1 in macrophages significantly restricts macrophage adhesion and migration, while attenuating macrophage pro-inflammatory responses. Bulk RNA-sequencing and pathway analysis uncover that NINJ1 can modulate macrophage infiltration through the TLR4/NF-κB/CCR2 signaling pathway. Protein-protein interaction analysis indicates that NINJ1 can activate TLR4 by competitively binding with ANXA2, an inhibitory interacting protein of TLR4. These findings reveal that NINJ1 can modulate AAA formation by promoting macrophage infiltration and pro-inflammatory responses, highlighting the potential of NINJ1 as a therapeutic target for AAA.
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