Detection methods

检测方法
  • 文章类型: Journal Article
    对导航和定位服务的开发和集成到广泛的接收机中的兴趣增加,使得它们容易受到各种安全攻击,诸如全球导航卫星系统(GNSS)干扰和欺骗攻击。包括软件定义无线电(SDR)在内的低成本设备的可用性提供了可用于执行这些攻击的可负担得起的平台的广泛可访问性。干扰和欺骗干扰的早期检测对于缓解和避免服务降级至关重要。由于这些原因,发展高效的检测方法已经成为一个重要的研究课题,文献中已经报道了许多有效的检测方法。本调查为读者提供了对GNSS干扰和欺骗干扰检测方法的全面和系统的审查。根据特定参数和特征对所选方法进行分类和分类,重点是该领域的最新进展。尽管已经报道了许多不同的检测方法,为开发新的和更有效的方法而进行的重大研究工作仍在进行中。这些努力是由快速发展和造成高安全风险的攻击数量增加推动的。本文对GNSS干扰和欺骗检测方法进行了综述,可用于针对特定目的和约束条件选择最合适的解决方案,并为以后的研究提供参考。
    Increased interest in the development and integration of navigation and positioning services into a wide range of receivers makes them susceptible to a variety of security attacks such as Global Navigation Satellite Systems (GNSS) jamming and spoofing attacks. The availability of low-cost devices including software-defined radios (SDRs) provides a wide accessibility of affordable platforms that can be used to perform these attacks. Early detection of jamming and spoofing interferences is essential for mitigation and avoidance of service degradation. For these reasons, the development of efficient detection methods has become an important research topic and a number of effective methods has been reported in the literature. This survey offers the reader a comprehensive and systematic review of methods for detection of GNSS jamming and spoofing interferences. The categorization and classification of selected methods according to specific parameters and features is provided with a focus on recent advances in the field. Although many different detection methods have been reported, significant research efforts toward developing new and more efficient methods remain ongoing. These efforts are driven by the rapid development and increased number of attacks that pose high-security risks. The presented review of GNSS jamming and spoofing detection methods may be used for the selection of the most appropriate solution for specific purposes and constraints and also to provide a reference for future research.
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  • 文章类型: Journal Article
    阿尔茨海默病(Alzheimer’sdisease,AD)是一种严重的老年痴呆症,以认知功能下降为特征,淀粉样蛋白-β斑块,和神经原纤维缠结。AD极大地损害了受害者的生活质量,并给整个社会带来了沉重负担。由AD引起的痴呆症患者的数量,前驱AD,据估计,全球临床前AD约为3.2亿、69亿和3.15亿,分别。目前的临床诊断是基于临床症状,临床研究表明,正电子发射断层扫描(PET)和脑脊液(CSF)生物标志物具有出色的诊断性能。然而,CSF生物标志物检测和PET的应用受到侵袭性和高成本的限制。临床症状的存在意味着AD病理已进步多年,只有少数药物被批准用于AD的治疗。因此,早期诊断对于控制AD的结局极为重要.在这次审查中,我们提供了制定临床诊断标准的概述,临床研究中的诊断策略,开发基于血液的生物标志物检测,和有前途的基于纳米技术的检测。
    Alzheimer\'s disease (AD) is a serious dementia afflicting aging population and is characterized by cognitive decline, amyloid-β plaques, and neurofibrillary tangles. AD substantially impairs the life quality of the victims and poses a heavy burden on the society at large. The number of people with dementia due to AD, prodromal AD, and preclinical AD is estimated to stand at roughly 3.2, 69, and 315 million worldwide, respectively. Current clinical diagnosis is based on clinical symptoms, and clinical research demonstrated that positron emission tomography (PET) and cerebrospinal fluid (CSF) biomarkers had excellent diagnostic performance. However, the application of CSF biomarker tests and PET are restricted by the invasiveness and high cost. The presence of clinical symptoms means that AD pathology has been progressing for many years, and only a few drugs have been approved for the traetemnt of AD. Therefore, early diagnosis is extremely important for controlling the outcomes caused by AD. In this review, we provided an overview of developing clinical diagnostic criteria, diagnostic strategies under clinical research, developing blood based-biomarker assays, and promising nanotechnologically-based assays.
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  • 文章类型: Journal Article
    背景:癌症的早期诊断对于其有效治疗至关重要。目前,已建立的筛查测试是癌症特异性的,需要分别筛查每种类型的癌症。癌症研究的主要目标是开发可以从单个体液样品中检测多种类型肿瘤的方法。Multicancer早期检测测试旨在检测循环肿瘤DNA的片段,无细胞DNA,循环microRNAs,或癌细胞在患者体液中释放的蛋白质。然而,由于费用高,这些测试不适合常规癌症预防。因此,近年来,已经开发了癌症筛查测试,以使用生物体检测尿液中的挥发性有机化合物,比如线虫,秀丽隐杆线虫.长度仅为1毫米,C.秀丽隐士有潜力提供一种新的,高效,成本效益高,快,和无痛的方法来检测肿瘤的存在。
    目的:这篇综述的目的是概述有关基于秀丽隐杆线虫的癌症检测方法的开发和验证的文献。这些检测的潜在好处是显著的,因为它们可以成为早期识别和诊断癌症的有价值的工具,尽管这项研究仍处于发展的初始阶段。
    BACKGROUND: Early diagnosis of cancer is essential for its effective treatment. Currently, established screening tests are cancer-specific and require screening for each type of cancer separately. The primary objective of cancer research is to develop methods that can detect multiple types of tumors from a single body fluid sample. Multicancer early detection tests aim to detect fragments of circulating tumor DNA, cell-free DNA, circulating microRNAs, or proteins released by cancer cells in the patient\'s body fluids. However, these tests are not suitable for routine cancer prevention due to their high cost. Therefore, in recent years, cancer screening tests have been developed to detect volatile organic compounds in urine using living organisms, such as nematodes, Caenorhabditis elegans. Measuring only 1 mm in length, C. elegans has the potential to offer a new, efficient, cost-effective, quick, and painless method to detect the presence of tumor.
    OBJECTIVE: The purpose of this review is to present an overview of the literature on the development and validation of C. elegans-based cancer detection methods. The potential benefits of these assays are significant, as they could become a valuable tool for the early identification and diagnosis of cancer, even though this research is still in its initial stages of development.
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  • 文章类型: Journal Article
    铜(Cu)的氧化还原状态一直是生物学和毒理学研究的重要问题,但是由于检测技术的局限性,许多研究空白仍有待探索。在这里,铜稳态的调节,包括吸收,易位,利用率,storage,并讨论了消除行为。角化,一种新发现的由过量铜积累引起的细胞死亡类型,导致DLAT蛋白聚集或Fe-S簇丢失,最终导致蛋白毒性胁迫,已审查。几个长期存在的疾病之谜,如威尔逊病和毒性作用,可能归因于角化。此外,综述了Cu(I)和Cu(II)的先进检测方法和应用,特别是原位成像技术,如XANES,和化学传感器。使用这些检测技术的大多数现有研究集中在细胞和水生生物中Cu(I)和Cu(II)的生物积累和毒性上。最后,确定Cu(I)和Cu(II)在生长中的作用将是重要的,发展,和生物体的疾病,以及Cu(I)和Cu(II)在细胞和水生毒理学中的生物积累与毒性之间的关系。
    Copper (Cu) redox state has been an important issue in biology and toxicology research, but many research gaps remain to be explored due to the limitations in the detecting techniques. Herein, the regulation of Cu homeostasis, including absorption, translocation, utilization, storage, and elimination behavior is discussed. Cuproptosis, a newly identified type of cell death caused by excessive Cu accumulation, which results in the aggregation of DLAT protein or the loss of Fe-S cluster and finally proteotoxic stress, is reviewed. Several longstanding mysteries of diseases such as Wilson disease and toxic effects, may be attributed to cuproptosis. Furthermore, we review the advanced detection methods and application of Cu(I) and Cu(II), especially the in-situ imaging techniques such as XANES, and chemosensors. Most of the existing studies using these detection techniques focus on the bioaccumulation and toxicity of Cu(I) and Cu(II) in cells and aquatic organisms. Finally, it will be important to identify the roles of Cu(I) and Cu(II) in the growth, development, and diseases of organisms, as well as the relationship between bioaccumulation and toxicity of Cu(I) and Cu(II) in cellular and aquatic toxicology.
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  • 文章类型: Journal Article
    该研究评估了42名健康成年人补充维生素D3后同时收集的毛细血管和静脉血浆中25-羟基维生素D[25(OH)D]水平的相关性和一致性。采用随机数字表法将其随机分为3组。A组每天服用1000IU维生素D3,B组每10天服用10,000IU维生素D3,C组每30天服用30,000IU维生素D3,直到第12个月结束。分别于第1天、第14天、第28天、第6个月和第12个月采用化学发光免疫分析法(CLIA)和质谱(LC-MS)检测血清25(OH)D水平,同时用化学发光免疫分析法(CLIA)检测毛细血管血清25(OH)D水平。采用Pearson相关分析和线性回归分析研究了两种样品的发现与同一样品中不同检测方法获得的结果之间的关系和转换方程。Bland-Altman方法,Kappa分析,和受试者工作特征(ROC)曲线用于评估一致性,灵敏度,和特异性。
    三组均在6个月时达到稳定高峰,三组的平均水平分别为49.21、42.50和43.025nmol/L,分别。A组的平均水平高于B组和C组(P<0.001)。LC-MS和CLIA检测42例健康成人血清25(OH)D平均值分别为45.32nmol/L和49.88nmol/L,分别,LC-MS测定毛细血管血中25(OH)D的平均值为52.03nmol/L,差异有统计学意义(P<0.001)。Pearson相关分析表明,散点图数据的线性拟合公式为:静脉25(OH)D浓度(nmol/L)=1.105*毛细血管25(OH)D浓度-7.532nmol/L,R2=0.625。在临床诊断中,静脉和校正的毛细血管25(OH)D水平之间观察到良好的一致性(Kappa值0.75)。毛细血管血中调整的血清25(OH)D具有较高的临床预测价值。
    当测得的25(OH)D水平较高时,两种方法之间的一致性很好。标准化毛细管血液化学发光法可用于25(OH)D的检测。
    UNASSIGNED: The study assessed the correlation and concordance of 25-hydroxyvitamin D [25(OH)D] levels in capillary and venous plasma collected simultaneously after vitamin D3 supplementation in 42 healthy adults. They were randomly divided into three groups by random number table method. Group A took 1,000 IU vitamin D3 daily, group B took 10,000 IU vitamin D3 every 10 days, and group C took 30,000 IU vitamin D3 every 30 days until the end of the 12th month. Venous blood serum 25(OH)D level was detected by chemiluminescence immunoassay (CLIA) and mass spectrometry (LC-MS) at day 1, day 14, day 28, month 6, and month 12 respectively, the capillary blood serum 25(OH)D level was detected by chemiluminescence immunoassay (CLIA) at the same time. Pearson correlation analysis and linear regression analysis were employed to investigate the relationship and transformation equation between the findings of the two samples and the results obtained from different detection methods within the same sample. The Bland-Altman method, Kappa analysis, and receiver operating characteristic (ROC) curve were utilized for assessing consistency, sensitivity, and specificity.
    UNASSIGNED: The three groups all reached a stable peak at 6 months, and the average levels of the three groups were 49.21, 42.50 and 43.025 nmol/L, respectively. The average levels of group A were higher than those of group B and group C (P < 0.001). The mean values of serum 25(OH)D measured by LC-MS and CLIA in 42 healthy adults were 45.32 nmol/L and 49.88 nmol/L, respectively, and the mean values of 25(OH)D measured by LC-MS in capillary blood were 52.03 nmol/L, and the difference was statistically significant (P < 0.001). Pearson correlation analysis showed that the linear fitting formula of scatter data was as follows: venous 25(OH)D concentration (nmol/L) = 1.105 * capillary 25(OH)D concentration -7.532 nmol/L, R2 = 0.625. Good agreement was observed between venous and corrected capillary 25(OH)D levels in clinical diagnosis (Kappa value 0.75). The adjusted serum 25(OH)D in capillary blood had a high clinical predictive value.
    UNASSIGNED: The agreement between the two methods is good when the measured 25(OH)D level is higher. Standardized capillary blood chemiluminescence method can be used for 25(OH)D detection.
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  • 文章类型: Journal Article
    在预计未来全球人口增长的背景下,提高农业食品产量至关重要。植物病害显著影响作物生产和粮食安全。现代微流体为检测这些缺陷提供了紧凑且方便的方法。尽管这一领域仍处于起步阶段,很少有全面的评论探讨这一主题,实践研究潜力巨大。本文回顾了这些原则,材料,以及微流控技术在检测各种病原体引起的植物病害中的应用。它在实现分离方面的表现,富集,并对不同病原体的检测进行了深入的讨论,以揭示其前景。凭借其多功能的设计,微流体已经发展为快速,敏感,和低成本的植物病害监测。包含用于分离的模块,预浓缩,扩增,检测可以早期发现微量病原体,加强作物安全。与成像系统耦合,智能和数字设备越来越多地被报道为先进的解决方案。
    In the context of global population growth expected in the future, enhancing the agri-food yield is crucial. Plant diseases significantly impact crop production and food security. Modern microfluidics offers a compact and convenient approach for detecting these defects. Although this field is still in its infancy and few comprehensive reviews have explored this topic, practical research has great potential. This paper reviews the principles, materials, and applications of microfluidic technology for detecting plant diseases caused by various pathogens. Its performance in realizing the separation, enrichment, and detection of different pathogens is discussed in depth to shed light on its prospects. With its versatile design, microfluidics has been developed for rapid, sensitive, and low-cost monitoring of plant diseases. Incorporating modules for separation, preconcentration, amplification, and detection enables the early detection of trace amounts of pathogens, enhancing crop security. Coupling with imaging systems, smart and digital devices are increasingly being reported as advanced solutions.
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  • 文章类型: Journal Article
    养殖肉,这包括在实验室里种植肉,而不是饲养动物,在可持续性方面提供了潜在的好处,健康,和动物福利相比,传统的肉类生产。然而,养殖肉的生产过程包括几个阶段,每个都有潜在危险,需要仔细监测和控制。从原始动物和周围环境收集的初始细胞中存在微生物污染风险。在细胞增殖过程中,危害可能包括来自培养基成分的化学残留物,如抗生素和生长因子,以及生物反应器灭菌不当导致的微生物问题。在分化阶段,细胞变成肌肉组织,潜在危害包括脚手架材料的残留物,微载体,和媒体组件。最终成熟和收获阶段可能会受到非无菌条件的环境污染,设备,或工人处理,如果不保持适当的无菌条件。这篇综述探讨了在培养肉类生产过程中必须监测和控制的关键微生物和化学危害。它描述了一些常规和新兴的新技术,可用于检测养殖肉类中的微生物和化学危害。该审查还概述了当前围绕养殖肉类不断发展的监管格局,并解释了如何通过先进的分析技术对微生物和化学危害进行彻底的检测和表征可以提供关键数据,以帮助开发强大的,专门为养殖肉类行业量身定制的循证食品安全法规。建议实施新的数字食品安全方法,以进一步研究灵敏有效地检测养殖肉类中的微生物和化学危害。
    Cultured meat, which involves growing meat in a laboratory rather than breeding animals, offers potential benefits in terms of sustainability, health, and animal welfare compared to conventional meat production. However, the cultured meat production process involves several stages, each with potential hazards requiring careful monitoring and control. Microbial contamination risks exist in the initial cell collection from source animals and the surrounding environment. During cell proliferation, hazards may include chemical residues from media components such as antibiotics and growth factors, as well as microbial issues from improper bioreactor sterilization. In the differentiation stage where cells become muscle tissue, potential hazards include residues from scaffolding materials, microcarriers, and media components. Final maturation and harvesting stages risk environmental contamination from nonsterile conditions, equipment, or worker handling if proper aseptic conditions are not maintained. This review examines the key microbiological and chemical hazards that must be monitored and controlled during the manufacturing process for cultured meats. It describes some conventional and emerging novel techniques that could be applied for the detection of microbial and chemical hazards in cultured meat. The review also outlines the current evolving regulatory landscape around cultured meat and explains how thorough detection and characterization of microbiological and chemical hazards through advanced analytical techniques can provide crucial data to help develop robust, evidence-based food safety regulations specifically tailored for the cultured meat industry. Implementing new digital food safety methods is recommended for further research on the sensitive and effective detection of microbiological and chemical hazards in cultured meat.
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  • 文章类型: Journal Article
    晚期糖基化终产物(AGEs)由于与慢性疾病和衰老过程有关而引起了广泛关注。近年来,年轻人中的老年病患病率显着上升,可能归因于现代生活节奏的加快。AGEs的积累主要归因于它们在新陈代谢中固有的困难,这使得它们成为慢性疾病检测的有前途的生物标志物。这篇综述旨在全面概述AGE研究的最新进展和发现。讨论分为两个主要部分:内源性AGEs(在体内形成)和外源性AGEs(来自外部来源)。随后总结了AGEs的各个方面,包括他们的生产途径,致病机制,和检测方法。此外,这篇综述探讨了未来关于AGEs的研究前景。总的来说,这篇全面的综述强调了AGEs在慢性疾病检测中的重要性,并提供了对其意义的透彻理解.它强调了进一步研究努力加深我们对AGEs及其对人类健康影响的理解的必要性。
    Advanced glycation end products (AGEs) have garnered significant attention due to their association with chronic diseases and the aging process. The prevalence of geriatric diseases among young individuals has witnessed a notable surge in recent years, potentially attributed to the accelerated pace of modern life. The accumulation of AGEs is primarily attributed to their inherent difficulty in metabolism, which makes them promising biomarkers for chronic disease detection. This review aims to provide a comprehensive overview of the recent advancements and findings in AGE research. The discussion is divided into two main sections: endogenous AGEs (formed within the body) and exogenous AGEs (derived from external sources). Various aspects of AGEs are subsequently summarized, including their production pathways, pathogenic mechanisms, and detection methods. Moreover, this review delves into the future research prospects concerning AGEs. Overall, this comprehensive review underscores the importance of AGEs in the detection of chronic diseases and provides a thorough understanding of their significance. It emphasizes the necessity for further research endeavors to deepen our comprehension of AGEs and their implications for human health.
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  • 文章类型: Journal Article
    抗生素耐药性越来越被视为未来的担忧,但是抗生素仍然常用于动物,导致它们通过食物链在人类中积累并构成健康风险。纳米材料的发展为创建检测抗生素残留的新传感策略开辟了可能性,导致创新的纳米生物传感器的出现,具有不同的好处,如速度,简单,准确度,灵敏度,特异性,和精度。因此,这篇全面的综述提供了有关基于纳米材料的电化学/光学传感器的相关和最新见解,用于检测牛奶和乳制品中的抗生素残留(ANBr)。这里,我们首先讨论实际产品中常用的ANB,ANBr的意义,以及它们的结合/生物学特性。然后,我们概述了使用不同纳米材料在开发基于荧光的先进纳米生物传感器方面的作用,比色法,表面增强拉曼散射,表面等离子体共振,和几个重要的电化学纳米生物传感器依赖于不同种类的电极。还概述了用于检测的ANB电化学行为的增强,以及(生物)识别单元的使用的简要概述。最终,本文提供了该研究领域的未来概念和商业化的基于纳米材料的传感器的观点,以帮助升级乳制品中ANBr的传感技术。
    Antibiotic resistance is increasingly seen as a future concern, but antibiotics are still commonly used in animals, leading to their accumulation in humans through the food chain and posing health risks. The development of nanomaterials has opened up possibilities for creating new sensing strategies to detect antibiotic residues, resulting in the emergence of innovative nanobiosensors with different benefits like rapidity, simplicity, accuracy, sensitivity, specificity, and precision. Therefore, this comprehensive review provides pertinent and current insights into nanomaterials-based electrochemical/optical sensors for the detection of antibitic residues (ANBr) across milk and dairy products. Here, we first discuss the commonly used ANBs in real products, the significance of ANBr, and also their binding/biological properties. Then, we provide an overview of the role of using different nanomaterials on the development of advanced nanobiosensors like fluorescence-based, colorimetric, surface-enhanced Raman scattering, surface plasmon resonance, and several important electrochemical nanobiosensors relying on different kinds of electrodes. The enhancement of ANB electrochemical behavior for detection is also outlined, along with a concise overview of the utilization of (bio)recognition units. Ultimately, this paper offers a perspective on the future concepts of this research field and commercialized nanomaterial-based sensors to help upgrade the sensing techniques for ANBr in dairy products.
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  • 文章类型: Journal Article
    新兴污染物(EC)是越来越多地存在于环境中的各种不受管制的污染物。这些污染物,包括药品,个人护理产品,内分泌干扰物,和工业化学品,可以通过各种途径进入环境并坚持下去,在食物链中积累,对生态系统和人类健康构成风险。这篇全面的综述检查了化学特性,来源,和各种ECs。它批判性地评估了当前对其环境和健康影响的理解,强调检测和分析方面的最新进展和挑战。检讨亦会评估现有的规例及政策,找出缺点并提出潜在的改进措施。ECs通过破坏动物激素对野生动植物和生态系统构成重大风险,导致遗传改变,降低多样性和弹性,改变土壤养分动态和物理环境。此外,ECs对人类健康的风险越来越大,包括荷尔蒙的紊乱,抗生素耐药性,内分泌干扰,神经效应,致癌作用,以及其他长期影响。为了解决这些关键问题,这篇综述为未来的研究提供了建议,强调需要进一步调查的领域,以了解这些污染物的全部影响。它还建议增加对研究的资金和支持,先进检测技术的发展,建立标准化方法,通过预防条例,加强公众意识和教育,跨部门合作,并将科学研究纳入决策。通过实施这些解决方案,我们可以提高我们的检测能力,监视器,并管理EC,降低环境和公共卫生风险。
    Emerging contaminants (ECs) are a diverse group of unregulated pollutants increasingly present in the environment. These contaminants, including pharmaceuticals, personal care products, endocrine disruptors, and industrial chemicals, can enter the environment through various pathways and persist, accumulating in the food chain and posing risks to ecosystems and human health. This comprehensive review examines the chemical characteristics, sources, and varieties of ECs. It critically evaluates the current understanding of their environmental and health impacts, highlighting recent advancements and challenges in detection and analysis. The review also assesses existing regulations and policies, identifying shortcomings and proposing potential enhancements. ECs pose significant risks to wildlife and ecosystems by disrupting animal hormones, causing genetic alterations that diminish diversity and resilience, and altering soil nutrient dynamics and the physical environment. Furthermore, ECs present increasing risks to human health, including hormonal disruptions, antibiotic resistance, endocrine disruption, neurological effects, carcinogenic effects, and other long-term impacts. To address these critical issues, the review offers recommendations for future research, emphasizing areas requiring further investigation to comprehend the full implications of these contaminants. It also suggests increased funding and support for research, development of advanced detection technologies, establishment of standardized methods, adoption of precautionary regulations, enhanced public awareness and education, cross-sectoral collaboration, and integration of scientific research into policy-making. By implementing these solutions, we can improve our ability to detect, monitor, and manage ECs, reducing environmental and public health risks.
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