Solid

固体
  • 文章类型: Journal Article
    背景:腺泡细胞癌(AciCC)是一种罕见的临床实体和唾液腺恶性肿瘤。它与细胞形态学模式的广泛组织学变化有关。
    方法:对2002年至2023年诊断为AciCC的60例进行了不同细胞形态学模式的评估。
    结果:诊断时患者的平均年龄为44.35±16.8岁,范围为15至81岁。女性占58.3%,F:M比为1.4:1。53例(88.3%)发生在腮腺,鼻区2例(3.3%),软板和上唇各一例(1.7%)。其余三个案件的地点没有具体说明。最常见的主诉是与疼痛相关的明确定义的面部肿胀。平均肿瘤大小为3.8±1.9cm。最主要的建筑模式是固体(83.3%),其次是微囊(60%),然后是卵泡(41.7%),乳头状囊性(14.3%),和肾小管囊性(28.6%),在3例(5%)中报告了具有去分化/高级转化的AcyCC。在83.3%的病例中(60人中有50人),我们注意到两种或多种生长模式的混合。其他退行性改变包括突出的淋巴间质,出血,和囊性改变。
    结论:对AcCC的多种细胞形态学模式的认识和识别,特别是在发展中国家的机构中,高度特异性和敏感的免疫组织化学染色或分子诊断的可用性有限,是关键和必要的。
    BACKGROUND: Acinic cell carcinoma (AciCC) is a rare clinical entity and a salivary gland malignancy. It is associated with wide histological variations in the cytomorphological patterns.
    METHODS: Sixty cases diagnosed as AciCC from 2002 to 2023 were assessed for diverse cytomorphological patterns.
    RESULTS: The mean age of patients at the time of diagnosis was 44.35±16.8 years ranging from 15 to 81 years. Females comprised 58.3% for a F: M ratio of 1.4:1. Fifty three cases (88.3%) occurred in the parotid gland, two cases in the nasal region (3.3%), and one case each in the soft plate and upper lip (1.7%). The location of the remaining three cases was not specified. The most common presenting complaint was a well-defined facial swelling associated with pain. The average tumor size was 3.8±1.9 cm. The most predominant architectural pattern was solid (83.3%) followed by microcystic (60%), then follicular (41.7%), papillary cystic (14.3%), and tubulocystic (28.6%), and AciCC with de-differentiation/high-grade transformation was reported in three cases (5%). In 83.3% of the cases (50 out of 60), we noticed a mixture of two or more growth patterns. Other degenerative changes included prominent lymphoid stroma, hemorrhage, and cystic change.
    CONCLUSIONS: Awareness and recognition of diverse cytomorphological patterns of AciCC, especially in institutions of a developing country where there is limited availability of highly specific and sensitive immunohistochemical stains or molecular diagnostics, are crucial and essential.
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  • 文章类型: Journal Article
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  • 文章类型: Journal Article
    纳米结构学的方法论是使用纳米原子,分子,和纳米物体,就像建筑一样。纳米建筑学通过整合相关领域来追求材料科学的终极概念。在这篇综述论文中,在界面交互式纳米建筑学的标题下,将讨论结构制造和接口功能开发的几个例子,突出了考虑纳米级架构材料的重要性。两个部分在固体和液体表面提供了一些示例。在固体界面环境中,分子结构可以精确地观察和分析与理论计算。固体表面是分子水平的纳米结构的主要部位。固体表面的纳米结构学有可能为基于先进的观察和分析的尖端功能和科学铺平道路。液体表面比固体界面更具动力学和动态性,和他们的高流动性提供了许多可能性的结构制造的纳米结构。后一种特征在相互作用的自由和组件的多样性方面具有优势,因此,液体表面可能是更适合功能开发的环境。最后一部分然后讨论了在纳米结构学中材料创造的未来需要什么。
    The methodology of nanoarchitectonics is to construct functional materials using nanounits such as atoms, molecules, and nanoobjects, just like architecting buildings. Nanoarchitectonics pursues the ultimate concept of materials science through the integration of related fields. In this review paper, under the title of interface-interactive nanoarchitectonics, several examples of structure fabrication and function development at interfaces will be discussed, highlighting the importance of architecting materials with nanoscale considerations. Two sections provide some examples at the solid and liquid surfaces. In solid interfacial environments, molecular structures can be precisely observed and analyzed with theoretical calculations. Solid surfaces are a prime site for nanoarchitectonics at the molecular level. Nanoarchitectonics of solid surfaces has the potential to pave the way for cutting-edge functionality and science based on advanced observation and analysis. Liquid surfaces are more kinetic and dynamic than solid interfaces, and their high fluidity offers many possibilities for structure fabrications by nanoarchitectonics. The latter feature has advantages in terms of freedom of interaction and diversity of components, therefore, liquid surfaces may be more suitable environments for the development of functionalities. The final section then discusses what is needed for the future of material creation in nanoarchitectonics.
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  • 文章类型: Journal Article
    本文主要介绍微控制器的软件开发领域,并详细介绍了嵌入式系统和物联网应用程序中现代编程实践和原则的实现。本文介绍了我们如何在微控制器上实现以前未实现的原则和应用的设计模式,以实现高质量的软件设计,它们目前仅用于在物联网参考模型的更高层上开发应用程序。提出了一种用于微控制器的自定义模块化框架,基于应用SOLID原则和适应微控制器应用程序开发需求的设计模式。所实现的框架实现了模块之间的独立通信和硬件组件的灵活集成。它的设计考虑了平台独立性,有助于其在不同开发环境中的广泛适应性和易用性。通过应用这些技术方法,我们可以创建应用程序,这些应用程序不仅在应用程序逻辑方面是可测试和可扩展的,而且还可以轻松适应这些硬件资源的变化。利用这些功能代表了一种创新的微控制器开发方法,从根本上提高了应用程序的长期可持续性和可扩展性。
    This article focuses on the area of software development for microcontrollers and details the implementation of modern programming practices and principles in embedded systems and IoT applications. This article explains how we implemented previously unimplemented principles and applied design patterns for quality software design on microcontrollers, which are currently only used for developing applications on the higher layers of the IoT reference model. A custom modular framework for microcontrollers is presented, based on applying SOLID principles and adapting design patterns specific to the microcontrollers\' application development needs. The implemented framework enables independent communication between modules and flexible integration of hardware components. It is designed with platform independence in mind, contributing to its wide adaptability and ease of use in diverse development environments. By applying these technological approaches, we can create applications that are not only testable and extensible in terms of application logic but also allow for easy adaptation to changes in these hardware resources. Utilizing these capabilities represents an innovative approach to development for microcontrollers that fundamentally improves the long-term sustainability and scalability of applications.
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  • 文章类型: Journal Article
    传统的建筑排水系统是基于涉及水和空气的两相流理论构建的。然而,排水系统包含更复杂的三相流,包括水,空气,和固体,这在研究中相对被忽视了。这项研究解决了固体对压力波动的影响,空气流量,和排水系统内的水力跳跃充满度,考虑三个因素:质量因素,横截面系数,和粘度。研究是在单堆系统中使用实验方法和CFD模拟进行的。研究结果表明,正负压力与上述三个因素之间存在正相关关系。质量因子和截面因子对系统负压影响较为显著。不同质量和横截面因子下负压极值的最大增长率分别达到7.72和16.52%,分别。相比之下,粪便污泥的粘度对排水系统正压波动的影响略高,正压极值的最大增长率为3.41%。
    The conventional building drainage system was constructed based on the theory of two-phase flow involving water and air. However, the drainage system contained a more intricate three-phase flow, encompassing water, air, and solids, which was relatively overlooked in research. This study addressed the impact of solids on pressure fluctuations, air flow rates, and hydraulic jump fullness within the drainage system, considering three factors: the mass factor, cross-section factor, and viscosity. The investigation was conducted within a single-stack system using both experimental methods and CFD simulations. The findings revealed a positive correlation between both positive and negative pressures and above three factors. The mass factor and the cross-section factor had a more significant impact on the negative pressure of the system. The maximum growth rates of negative pressure extremes under different mass and cross-section factors reached 7.72 and 16.52%, respectively. In contrast, the viscosity of fecal sludge had a slightly higher effect on the positive pressure fluctuation of the drainage system, with the maximum growth rate of positive pressure extremes at 3.41%.
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  • 文章类型: Journal Article
    这项研究采用响应面方法和中央复合设计(CCD)来优化水热处理(HTT)条件,以实现食物垃圾(FW)的增值。研究了基于实验室规模的压力反应器的HTT工艺,以检测温度(220-340°C)和停留时间(90-260分钟)对元素组成和水热液体中脂肪酸回收率的影响。研究的核心是确定温度是HTT过程中影响食物垃圾转化的主要因素,展示其对HTT产品产量的影响。液体部分,富含饱和脂肪酸(SFA),显示出与温度相关的趋势,较高的温度有利于SFA的恢复。具体来说,HTT在340°C在180分钟内表现出最高的SFA百分比,达到52.5wt%。该研究将HTT确立为营养回收的有希望的途径,在最佳条件下,液体部分的产量约为95%。此外,使用响应面方法的统计分析预测水炭和热液的最佳可实现收率为6.15%和93.85%,分别,在320°C下获得200分钟。
    This study employs response surface methodology and a central composite design (CCD) to optimize hydrothermal treatment (HTT) conditions for the valorization of food waste (FW). Lab-scale pressure reactor-based HTT processes are investigated to detect the effects of temperature (220-340 °C) and resident time (90-260 min) on elemental composition and fatty acid recovery in the hydrothermal liquid. Central to the study is the identification of temperature as the primary factor influencing food waste conversion during the HTT process, showcasing its impact on HTT product yields. The liquid fraction, rich in saturated fatty acids (SFA), demonstrates a temperature-dependent trend, with higher temperatures favoring SFA recovery. Specifically, HTT at 340 °C in 180 min exhibits the highest SFA percentages, reaching up to 52.5 wt%. The study establishes HTT as a promising avenue for nutrient recovery, with the liquid fraction yielding approximately 95% at optimized conditions. Furthermore, statistical analysis using response surface methodology predicts the optimal achievable yields for hydrochar and hydrothermal liquid at 6.15% and 93.85%, respectively, obtained at 320 °C for 200 min.
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  • 文章类型: Journal Article
    据报道,非主要或甚至最小的微乳头状和/或固体(MP/S)亚型对手术切除的肺腺癌(ADC)产生不利的预后影响。目前,缺乏证据证明高级病理亚型,包括MP/S组件,影响手术切除的肺ADC伴毛玻璃混浊(GGO)患者的预后。在这次调查中,我们探讨了GGO肺ADC中最少MP/S成分的预后意义。
    在2014年1月至2016年12月期间,对1,004例连续患者进行了回顾性队列研究,这些患者接受了病理分期(p期)I型肺ADC的治疗性切除,并在计算机断层扫描(CT)扫描上进行了GGO。将肿瘤分为MP/S阳性(MP/S+)组和MP/S阴性(MP/S-)组。当MP/S亚型占整个肿瘤的≥1%时,定义MP/S肿瘤。使用Kaplan-Meier分析评估MP/S亚型的预后影响,Cox比例风险模型和受限立方脊柱(RCS)模型。
    共发现86例(8.6%)MP/S+肿瘤和918例(91.4%)MP/S-肿瘤。MP/S+肿瘤的实体肿瘤直径和病理浸润性肿瘤大小均显著大于MP/S-肿瘤(13.0vs.4.0mm,P<0.001,18.0vs.10.0mm,分别为P<0.001)。经过7.3年的平均随访,MP/S成分的存在与RFS减少显著相关(5年RFS,MP/S+88.3%vs.MP/S-97.4%;P<0.001;HR=1.02)。在MP/S-(5年RFS,MP/S-Lep+98.0%vs.MP/S-Lep-95.3%;P=0.01;HR=0.89)和MP/S+亚组(5年RFS,MP/S+Lep+93.4%vs.MP/S+Lep-83.2%;P=0.10;HR=0.84)。根据多变量分析,MP/S+组分≥5%是唯一独立影响RFS的肿瘤相关因素[风险比(HR)=1.77;95%置信区间(CI):1.07-2.94]。如RCS模型所示,MP/S亚型的比例对RFS有逐渐的负面影响。
    I期GGO特征肺ADC中MP/S模式的存在具有重要的预后价值,可能对定制的术后治疗和监测策略有影响。特别是当比例超过整个肿瘤的5%时。
    UNASSIGNED: Non-predominant or even minimal micropapillary and/or solid (MP/S) subtypes have been reported to exert an unfavorable prognostic influence on surgically resected lung adenocarcinoma (ADC). Currently, there is a lack of evidence to demonstrate that high-grade pathological subtypes, including MP/S components, impact the prognosis of patients with surgically resected lung ADCs with ground-glass opacity (GGO). In this investigation, we explored the prognostic implications of minimal MP/S components in lung ADCs with GGO.
    UNASSIGNED: A retrospective cohort study was conducted on 1,004 consecutive patients undergoing curative resection for pathologic stage (p-stage) I lung ADCs featuring GGO on computed tomography (CT) scans between January 2014 and December 2016. Tumors were categorized into MP/S positive (MP/S+) group and MP/S negative (MP/S-) group. MP/S+ tumors were defined when MP/S subtypes constituted ≥1% of the entire tumor. The prognostic impact of MP/S subtypes was evaluated using Kaplan-Meier analysis, Cox proportional hazard model and restricted cubic spine (RCS) model.
    UNASSIGNED: A total of 86 (8.6%) cases with MP/S+ tumors and 918 (91.4%) cases with MP/S- tumors were identified. The solid component tumor diameter and pathological invasive tumor size of MP/S+ tumors were both significantly larger than that of MP/S- tumors (13.0 vs. 4.0 mm, P<0.001, and 18.0 vs. 10.0 mm, P<0.001, respectively). After a median follow-up of 7.3 years, the presence of MP/S components was significantly associated with decreased RFS (5-year RFS, MP/S+ 88.3% vs. MP/S- 97.4%; P<0.001; HR =1.02). The presence of a histologic lepidic (Lep) component demonstrated a prognostic advantage in both MP/S- (5-year RFS, MP/S-Lep+ 98.0% vs. MP/S-Lep- 95.3%; P=0.01; HR =0.89) and MP/S+ subgroups (5-year RFS, MP/S+Lep+ 93.4% vs. MP/S+Lep- 83.2%; P=0.10; HR =0.84). MP/S+ components ≥5% were the only tumor-related factor that independently affected RFS [hazard ratio (HR) =1.77; 95% confidence interval (CI): 1.07-2.94] according to multivariate analysis. There was a progressively negative impact of the proportion of MP/S subtypes on RFS as illustrated by RCS model.
    UNASSIGNED: The presence of MP/S patterns in stage I GGO-featured lung ADCs exhibit significant prognostic value and may have implications for tailored postoperative treatment and surveillance strategies, especially when the proportion exceeds 5% of the entire tumor.
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  • 文章类型: Journal Article
    我们在这里报告了在室温下暴露于纯二甲基亚砜(DMSO)后,丙烯酸比色皿中混浊的凝胶相的形成。观察到的现象发生在环境氧气存在下的10h至14h孵育期间。从比色皿中取出浑浊的凝胶后,它变成了白色固体,表现出独特的发射行为。在暴露于UV295LED脉冲的光从6h到8h时,混浊凝胶相的形成被加速。令人惊讶的是,随后将白色固体暴露于几微升的纯DMSO和涡旋导致其在短短几分钟内转化为透明凝胶状态。最终获得透明和液体的特性。此外,白色固相可以负载其他分子,如白藜芦醇和槲皮素,导致与液体和纯DMSO中的相同分子相比各自的发射光谱发生偏移。这些新发现突出了紫外光子之间的相互作用,氧气,DMSO和丙烯酸,并可能扭曲荧光光谱实验。 .
    We here report the formation of a turbid-gel phase in acrylic cuvettes upon exposure to pure Dimethyl Sulfoxide (DMSO) at room temperature. The observed phenomenon occurred over a 10 h to 14 h incubation in the presence of environmental oxygen. After the turbid gel was removed from the cuvette, it became a white solid exhibiting unique emission behavior. The formation of the turbid-gel phase was accelerated upon exposure to UV 295 LED pulses of light from 6 h to 8 h. Surprisingly, subsequent exposure of the white solid to a few microliters of pure DMSO and vortexing resulted in its transformation into a transparent gel state in just a few minutes, eventually acquiring transparent and liquid properties. Additionally, the white-solid phase can load other molecules, such as Resveratrol and Quercetin, leading to shifts in the respective emission spectra compared with the same molecule in liquid and pure DMSO. These novel findings highlight the interaction between UV photons, oxygen, DMSO and Acrylic, and potentially distort fluorescence spectroscopy experiments.
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  • 文章类型: Journal Article
    背景:小尺寸(≤2cm)肺腺癌中微乳头状和实体亚型成分的鉴定在确定最佳手术程序中起着至关重要的作用。本研究旨在提出一种利用术前可用指标的直接预测方法。
    方法:自2019年1月至2022年7月,在宣武医院胸外科接受根治性切除术的小肺腺癌患者341例,对首都医科大学进行回顾性分析。根据固体或微乳头状成分是否≥5%(S/MP5和S/MP5-)将患者分为两组。单因素分析和多因素logistic回归分析用于确定S/MP5+的独立预测因子。然后构造一个列线图以直观地显示结果。最后,描绘了具有1000个自举重新采样的校准曲线和接收器工作特征(ROC)曲线以评估其性能。
    结果:根据术后病理结果,79例(23.2%)患者为S/MP5+,262例(76.8%)患者为S/MP5-。基于多变量分析,最大直径(p=0.010),合并肿瘤比率(CTR)(p<0.001)和全身免疫炎症指数(SII)(p<0.001)被确定为三个独立的危险因素,并纳入列线图。校准曲线显示S/MP5+的预测概率和实际概率之间的良好一致性。此外,该模型显示出一定的歧视,ROC曲线下面积为0.893。
    结论:基于SII构建的模型是预测小型肺腺癌术前高级别亚型成分的实用工具,有助于确定最佳手术方式。
    BACKGROUND: Identification of micropapillary and solid subtypes components in small-sized (≤ 2 cm) lung adenocarcinoma plays a crucial role in determining optimal surgical procedures. This study aims to propose a straightforward prediction method utilizing preoperative available indicators.
    METHODS: From January 2019 to July 2022, 341 consecutive patients with small-sized lung adenocarcinoma who underwent curative resection in thoracic surgery department of Xuanwu Hospital, Capital Medical University were retrospectively analyzed. The patients were divided into two groups based on whether solid or micropapillary components ≥ 5% or not (S/MP5+ and S/MP5-). Univariate analysis and multivariate logistic regression analysis were utilized to identify independent predictors of S/MP5+. Then a nomogram was constructed to intuitively show the results. Finally, the calibration curve with a 1000 bootstrap resampling and the receiver operating characteristic (ROC) curve were depicted to evaluate its performance.
    RESULTS: According to postoperative pathological results, 79 (23.2%) patients were confirmed as S/MP5+ while 262 (76.8%) patients were S/MP5-. Based on multivariate analysis, maximum diameter (p = 0.010), consolidation tumor ratio (CTR) (p < 0.001) and systemic immune-inflammation index (SII) (p < 0.001) were identified as three independent risk factors and incorporated into the nomogram. The calibration curve showed good concordance between the predicted and actual probability of S/MP5+. Besides, the model showed certain discrimination, with an area under ROC curve of 0.893.
    CONCLUSIONS: The model constructed based on SII is a practical tool to predict high-grade subtypes components of small-sized lung adenocarcinoma preoperatively and contribute to determine the optimal surgical approach.
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  • 文章类型: Journal Article
    由于低剂量螺旋计算机断层扫描的采用增加,越来越多的早期肺癌被诊断为恶性肺结节。但最大尺寸≤3cm的纯实体T1肺癌并不总是处于早期阶段,尽管它的尺寸很小。这种类型的癌症可以是高度侵袭性的,并且与病理相关,转移,术后复发,甚至死亡。然而,在临床上很容易误诊或延误诊断,从而对人类健康构成严重威胁。据报道,T1肺癌中淋巴结或胸腔外转移的百分比>20%。因此,了解和确定纯实体T1肺癌的侵袭性特征对于预防至关重要,诊断,和治疗策略,有利于改善预后。随着肺癌筛查的广泛开展,这些高侵袭性纯实体T1肺癌将成为未来主要的晚期肺癌。然而,关于如何识别这些“早期”侵袭性肺癌的精准医学信息有限。为临床医生提供新的见解,以早期识别和干预高侵袭性纯实体T1肺癌,本文综述了其临床特点,成像,病理学,基因改变,免疫微环境,多组学,以及当前的诊断和预测技术。
    A growing number of early-stage lung cancers presenting as malignant pulmonary nodules have been diagnosed because of the increased adoption of low-dose spiral computed tomography. But pure solid T1 lung cancer with ≤3 cm in the greatest dimension is not always at an early stage, despite its small size. This type of cancer can be highly aggressive and is associated with pathological involvement, metastasis, postoperative relapse, and even death. However, it is easily misdiagnosed or delay diagnosed in clinics and thus poses a serious threat to human health. The percentage of nodal or extrathoracic metastases has been reported to be >20% in T1 lung cancer. As such, understanding and identifying the aggressive characteristics of pure solid T1 lung cancer is crucial for prevention, diagnosis, and therapeutic strategies, and beneficial to improving the prognosis. With the widespread of lung cancer screening, these highly invasive pure solid T1 lung cancer will become the main advanced lung cancer in future. However, there is limited information regarding precision medicine on how to identify these \"early-stage\" aggressive lung cancers. To provide clinicians with new insights into early recognition and intervention of the highly invasive pure solid T1 lung cancer, this review summarizes its clinical characteristics, imaging, pathology, gene alterations, immune microenvironment, multi-omics, and current techniques for diagnosis and prediction.
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