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  • Open Access

    ARTICLE

    Morphoanatomical characters of Araujia hortorum E. Fourn (Asclepiadaceae), a native species of medicinal interest

    Bucciarelli A, VN Cambi, CB Villamil

    Phyton-International Journal of Experimental Botany, Vol.77, pp. 283-295, 2008, DOI:10.32604/phyton.2008.77.283

    Abstract Araujia hortorum (“tasi”) is a native species of South America, invading crops in several countries. It is used as food and in medicine due to its galactogenic properties. Morphoanatomical and micrographic characters of leaves, stems and roots were studied to determine diagnostic characters that allow its identification in the vegetative state. Stomata and palisade parenchyma indexes, stomata location, the proportion and characteristics of palisade and spongy parenchyma and the scarce quantity of idioblasts, resulted in the most relevant, differential characters. More >

  • Open Access

    ARTICLE

    Morphological, molecular and pathogenic diagnostic of fungi in lawn’s root and neck in Mexico

    García-Munguía CA1, M Acosta-Ramos2, O Vázquez-Martinez3, M Pérez-Sato5, A García-Munguía4, O García-Munguía6, AM García-Munguía3

    Phyton-International Journal of Experimental Botany, Vol.86, pp. 258-264, 2017, DOI:10.32604/phyton.2017.86.258

    Abstract The illnesses that cause root and neck rot in golf courses constitute a limiting factor for grass development worldwide. This is mainly true when management guidelines are not conducted. Our research was conducted in the Golf Club “Mexico”, located in Mexico, D.F. Isolates were taken from plants that presented yellowing symptoms and root and neck rot. The identified pathogenic fungi, isolated from axenic media, were Giberella avenacea, Fusarium oxysporum, F. oxysporum f. sp. cubense and Pythium ultimum. The molecular characterization showed a comparison of the DNA-obtained sequences which was morphologically determined as F. avenaceum and was molecularly corroborated as G.… More >

  • Open Access

    ARTICLE

    Damage Extension Diagnosis Method for Typical Structures of Composite Aircraft Based on Lamb Waves

    Dongyue Gao1, Yishou Wang1, Zhanjun Wu1, Rahim Gorgin1

    Structural Durability & Health Monitoring, Vol.9, No.3, pp. 233-252, 2013, DOI:10.32604/sdhm.2013.009.233

    Abstract In this study, a Lamb wave-based damage extension diagnosis method to monitor the damage on typical structures of composite aircraft is proposed. First, an overview of the damage extension diagnosis method is given. In the method, probability-based damage diagnostic imaging was combined with empirical threshold value to distinguish damage location and estimate damage size in damage extension process. To validate the effectiveness of method, extension diagnosis of simulate delamination damage in typical structure on aircraft were processed. To illustrate the capability of the damage extension diagnostic method, a delamination growth monitoring experiment was performed in a typical reinforce component (Tjoint… More >

  • Open Access

    ARTICLE

    Glypican-3 versus alpha-fetoprotein as a biomarker for hepatocellular carcinoma: a diagnostic meta-analysis

    Weiyu FU1, Hongyu LU2, Li LI3, Kefeng WU3, Yanping LI3, Yi LIU3,*, Jianli HU4,*

    BIOCELL, Vol.39, No.2-3, pp. 25-32, 2015, DOI:10.32604/biocell.2015.39.025

    Abstract Objective: To assess the diagnostic accuracy of serum GPC3 versus alpha-fetoprotein (AFP) for HCC by using the method of system review.
    Methods: PubMed and EMBASE were searched from its inception to 20, April 2014 for studies that compared diagnostic accuracy of serum GPC3 with AFP for HCC. Sensitivity, specificity and other measures were pooled using random-effects models. Summary receiver operating characteristic curve analysis was used to summarize the overall test performance.
    Results: Fourteen studies were included in this meta-analysis. Summary estimates for serum GPC3 and AFP in diagnosing HCC were as follows: sensitivity, 69% (95% confidence interval (CI), 56-80%) vs.… More >

  • Open Access

    ARTICLE

    Associations between CD133, CK19 and G2/M in cirrhotic HCV (genotype-4) patients with or without accompanying tumor

    Hoda M. EL-EMSHATY1, Entsar A. SAAD2, Mona S. GOUIDA3, Zahraa R. ELSHAHAWY1,2

    BIOCELL, Vol.42, No.2, pp. 55-60, 2018, DOI:10.32604/biocell.2018.07009

    Abstract Hepatitis C virus (HCV)-cirrhotic patients have the highest threat of developing hepatocellular carcinoma (HCC) and may be at risk of extra hepatic cancer. The present study was designed to investigate CD133 and CK19 in HCV (genotype-4)-cirrhotic patients with/without HCC or extra hepatic cancer, to assess the degree of their correlation with cell cycle abnormalities and finally to assess the role of their combination as diagnostic tool for discrimination of cirrhotic patients with HCC from those with extra hepatic cancer. The study included 77 HCV-cirrhotic patients and 20 healthy non-disease control group. Patients were categorized histo-pathologically into: 24 have only liver… More >

  • Open Access

    ABSTRACT

    Influence of the Regression Error of the Response Surface to the Diagnostic Accuracy of the Unsupervised Statistical Damage Diagnostic Method

    A.Iwasaki1, K.Yuguchi2, A.Todoroki3, Y.Shimamura4

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.6, No.3, pp. 183-188, 2008, DOI:10.3970/icces.2008.006.183

    Abstract The present study is about study on the diagnostic accuracy of the unsupervised damage diagnosis method named SI-F method. For the health monitoring of existing structures, modeling of entire structure or obtaining data sets after creating damage for training is almost impossible. This raises significant demand for development of a low-cost diagnostic method that does not require modeling of entire structure or data on damaged structure. Therefore, the present study proposes a low-cost unsupervised statistical diagnostic method for structural damage detection. The proposed method statistically diagnoses structural condition by means of investigating the change of a response surface which conducts… More >

  • Open Access

    ARTICLE

    Multi-Mode Guided Waves Based Reference-Free Damage Diagnostic Imaging in Plates

    Jiaqi Zhang1, Kehai Liu2,*, Chang Gao1, Zhanjun Wu1, Yuebin Zheng1, Dongyue Gao3

    Structural Durability & Health Monitoring, Vol.13, No.1, pp. 41-59, 2019, DOI:10.32604/sdhm.2019.05142

    Abstract Probability-based diagnostic imaging (PDI) is one of the most well-known damage identification methods using guided waves. It is usually applied to diagnose damage in plates. The previous studies were dependent on the certain damage index (DI) which is always calculated from the guided wave signals. In conventional methods, DI is simply defined by comparing the real-time data with the baseline data as reference. However, the baseline signal is easily affected by varying environmental conditions of structures. In this paper, a reference-free diagnostic imaging method is developed to avoid the influence of environmental factors, such as temperature and load conditions. The… More >

  • Open Access

    ARTICLE

    The Use of High-Performance Fatigue Mechanics and the Extended Kalman / Particle Filters, for Diagnostics and Prognostics of Aircraft Structures

    Hai-Kun Wang1,2, Robert Haynes3, Hong-Zhong Huang1, Leiting Dong2,4, Satya N. Atluri2

    CMES-Computer Modeling in Engineering & Sciences, Vol.105, No.1, pp. 1-24, 2015, DOI:10.3970/cmes.2015.105.001

    Abstract In this paper, we propose an approach for diagnostics and prognostics of damaged aircraft structures, by combing high-performance fatigue mechanics with filtering theories. Fast & accurate deterministic analyses of fatigue crack propagations are carried out, by using the Finite Element Alternating Method (FEAM) for computing SIFs, and by using the newly developed Moving Least Squares (MLS) law for computing fatigue crack growth rates. Such algorithms for simulating fatigue crack propagations are embedded in the computer program Safe- Flaw, which is called upon as a subroutine within the probabilistic framework of filter theories. Both the extended Kalman as well as particle… More >

  • Open Access

    ARTICLE

    The Solution Crystallisation Diagnostics Facility, a European Facility for Microgravity Research on Structures from Solutions on Board the ISS

    V. Pletser1, R. Bosch2, L. Potthast2, R. Kassel3

    FDMP-Fluid Dynamics & Materials Processing, Vol.2, No.1, pp. 65-76, 2006, DOI:10.3970/fdmp.2006.002.065

    Abstract Orbital weightless conditions have been shown to yield better and larger crystals. The Solution Crystallization Diagnostics Facility (SCDF) is a third generation instrument developed by ESA and dedicated to the observation and study with advanced diagnostics nucleation and crystallisation processes of molecules from solutions on board the International Space Station. The SCDF is intended to be used for studies of proteins and large biomolecules, and more generally of any kind of molecules growing from solutions, using the powerful set of diagnostics means available in the SCDF platform. Several protein crystallisation reactors have been developed to study protein and macro-biomolecules assembling… More >

  • Open Access

    ARTICLE

    Measurement Techniques of Torsional Vibration in Rotating Shafts

    P.A. Meroño1, F.C. Gómez2, F. Marín3

    CMC-Computers, Materials & Continua, Vol.44, No.2, pp. 85-104, 2014, DOI:10.3970/cmc.2014.044.085

    Abstract The measurement of torsional vibration is a common practice in certain fields, such as the automotive industry, power generation, or large alternative engines. Similarly, functional analysis and diagnostic of other equipment, which are not traditionally measured, can benefit greatly from this type of measurement. This review discusses some techniques used in industry to measure torsional vibration, briefly describing the types of sensors used and the transduction procedures. Choosing the most appropriate technique in each case not only responds to economic reasons, but also to other conditions of the given equipment, such as its design, coupled machines or devices, functional status… More >

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