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  • 1
    Online Resource
    Online Resource
    Invasive candidiasis in intensive care unit; consensus statement from an Iranian panel of experts, July 2013
    SAGE Publications ; 2014
    In:  JRSM Open Vol. 5, No. 3 ( 2014-03-01), p. 204253331351768-
    Details
    In: JRSM Open, SAGE Publications, Vol. 5, No. 3 ( 2014-03-01), p. 204253331351768-
    Abstract: Invasive candidiasis (IC) is associated with high mortality in intensive care unit (ICU) patients. Timely diagnosis of this potentially fatal condition remains a challenge; on the other hand, the criteria for initiating empirical antifungal therapy in critically ill patients are not well defined in different patient population and ICU settings. Alongside the international guidelines, reaching regional and local consensus on diagnosis and management of IC in ICU setting is essential. This report summarizes our present status of IC management in ICU, considered by a group of Iranian experts in the fields of intensive care and infectious diseases. A round table of 17 experts was held to review the available data and discuss the optimal treatment strategies for IC in critical care setting. Comparative published data on the management of IC were analytically reviewed and the commonly asked questions about the management of IC in ICU were isolated. These questions were interactively discussed by the panel and audience responses were taken to consolidate point-to-point agreement with the panel arriving at consensus in many instances. The responses indicated that patients’ risk stratification, clinical discretion, fungal diagnostic techniques and the empirical therapy for IC are likely to save more patients. Treatment options were recommended to be based on the disease severity, prior azole exposure, and the presence of suspected azole-resistant Candida species. This report was reviewed, edited and discussed by all participants to include further evidence-based insights. The panel expects such endorsed recommendations to be soon formulated for implementation across the country.
    Type of Medium: Online Resource
    ISSN: 2054-2704 , 2054-2704
    URL: Article
    DOI: 10.1177/2042533313517689
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2014
    detail.hit.zdb_id: 2762955-7
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  • 2
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    Online Resource
    Delamination effects on the unsteady aero-elastic behavior of composite wing by modal analysis
    SAGE Publications ; 2022
    In:  Journal of Vibration and Control Vol. 28, No. 19-20 ( 2022-10), p. 2732-2745
    Details
    In: Journal of Vibration and Control, SAGE Publications, Vol. 28, No. 19-20 ( 2022-10), p. 2732-2745
    Abstract: This article deals with the investigation of delamination effects on the flutter behavior of a composite wing subjected to unsteady aerodynamic loads by providing an integrated procedure using exact methods. For this purpose, an undamaged wing structure is modeled as a cantilevered Bernoulli–Euler beam with coupled bending–torsion and delaminated wing structure is modeled as three interconnected intact beams. The modal analysis of the intact and delaminated beams is performed and mode shapes are obtained based on the development of the dynamic stiffness matrix, a computer code and an iterative method. The fundamental modes of the intact and delaminated beam derived from the free vibration analysis are used in Galerkin’s method and the flutter and divergence speeds are obtained with aerodynamic forces applied. In fact, modified shape functions were developed to reflect the delamination effect in the aeroelastic analysis. Also, for the unsteady aeroelastic analysis, an iterative algorithm is developed. It was found that the delamination location and its length can have a positive or a negative influence on the flutter behavior of the wing which depends on the fiber angle.
    Type of Medium: Online Resource
    ISSN: 1077-5463 , 1741-2986
    URL: Article
    DOI: 10.1177/10775463211019213
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2070247-4
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  • 3
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    Online Resource
    Synthesis of B 4 C, Al 2 O 3 , and AlB 12 reinforced Al matrix nano composites via mechanochemical method
    SAGE Publications ; 2012
    In:  Journal of Composite Materials Vol. 46, No. 18 ( 2012-08), p. 2227-2237
    Details
    In: Journal of Composite Materials, SAGE Publications, Vol. 46, No. 18 ( 2012-08), p. 2227-2237
    Abstract: In this study, mechanochemical reactions in the ternary system of Al–B 2 O 3 –C were investigated. The starting materials were activated in a planetary ball mill under Argon atmosphere at different times. X-Ray diffraction and scanning electron microscopy (SEM) methods were used to characterize the products. The results showed that B 4 C, AlB 12 , and Al 2 O 3 were formed at least after 4 h of milling. Furthermore, an aluminum borate (9Al 2 O 3 .2 B 2 O 3 ) compound was formed during an aluminothermic reaction, as a by-product that could be diminished substantially by increasing the milling time to 20 h. SEM and TEM micrograph showed that the products were agglomerated and the range of particle size was within 100 nm. A high hardness value of 88 BHN with a compaction strength of 313 MPa can be achieved for the bulk sample sintered at 560°C for 90 min.
    Type of Medium: Online Resource
    ISSN: 0021-9983 , 1530-793X
    URL: Article
    DOI: 10.1177/0021998311430867
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2012
    detail.hit.zdb_id: 160490-9
    detail.hit.zdb_id: 2081924-9
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  • 4
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    Axiomatic design of a reflective multilayer high-temperature insulator
    SAGE Publications ; 2019
    In:  Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering Vol. 233, No. 2 ( 2019-02), p. 457-471
    Details
    In: Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, SAGE Publications, Vol. 233, No. 2 ( 2019-02), p. 457-471
    Abstract: High-temperature insulators protect structures against extreme thermal loads in various industries such as energy and space-related areas. For such insulations, radiation is the dominant mode of heat transfer. The intended multilayer high-temperature insulator utilizes reflection as the controlling mechanism for the radiative heat transfer. In the current study, the axiomatic design methodology is used to map the design process of a reflective multilayer high-temperature insulator. In addition, an analytical model is developed to simulate the combined radiation and conduction heat transfer in the reflective multilayer high-temperature insulator. The model was solved numerically and validated with the existing experimental results. The obtained results depict that design process of the multilayer high-temperature insulator would be decouple if two reflection surfaces are used for the insulator. Also, the reflective surfaces control the transmission of the radiation in two ways: they control thermal emittance to the insulator’s cold side and control conversion of radiation to conduction, as well. Radiation emittance and conversion will be minimized where the reflective surface is located near the cold and hot side of the insulator, respectively. This issue justifies different results in the literature about most effective location of the inserted reflective layers.
    Type of Medium: Online Resource
    ISSN: 0954-4100 , 2041-3025
    URL: Article
    DOI: 10.1177/0954410017737576
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2019
    detail.hit.zdb_id: 2032759-6
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  • 5
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    Online Resource
    Forecasting Daily River Flow Using an Artificial Flora–Support Vector Machine Hybrid Modeling Approach (Case Study: Karkheh Catchment, Iran)
    SAGE Publications ; 2020
    In:  Air, Soil and Water Research Vol. 13 ( 2020-01), p. 117862212096965-
    Details
    In: Air, Soil and Water Research, SAGE Publications, Vol. 13 ( 2020-01), p. 117862212096965-
    Abstract: In this study, the hybrid support vector machine–artificial flora algorithm method was developed and the obtained results were compared with those of the support vector–wave vector machine model. Karkheh catchment area was considered as a case study to estimate the flow rate of rivers using the daily discharge statistics taken from hydrometric stations located upstream of the dam in the statistical period of 2008 to 2018. Necessary criteria including coefficient of determination, root mean square error (RMSE), mean absolute error (MAE), and Nash–Sutcliffe coefficient were used to evaluate and compare the models. The results illustrated that the combined structures provided acceptable results in terms of river flow modeling. Also, a comparison of the models based on the evaluation criteria and Taylor’s diagram demonstrated that the proposed hybrid method with the correlation coefficient of R 2  = 0.924 to 0.974, RMSE = 0.022 to 0.066 m 3 /s, MAE = 0.011 to 0.034 m 3 /s, and Nash-Sutcliffe (NS) coefficient = 0.947 to 0.986 outperformed other methods in terms of estimating the daily flow rates of rivers.
    Type of Medium: Online Resource
    ISSN: 1178-6221 , 1178-6221
    URL: Article
    DOI: 10.1177/1178622120969659
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2488152-1
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  • 6
    Online Resource
    Online Resource
    Development of beam modal function for free vibration analysis of FML circular cylindrical shells
    SAGE Publications ; 2018
    In:  Journal of Vibration and Control Vol. 24, No. 14 ( 2018-07), p. 3026-3035
    Details
    In: Journal of Vibration and Control, SAGE Publications, Vol. 24, No. 14 ( 2018-07), p. 3026-3035
    Abstract: The free vibration of fiber–metal laminate (FML) thin circular cylindrical shells with different boundary conditions has been studied in this research. Strain–displacement relations have been obtained according to Love’s first approximation shell theory. To satisfy the governing equations of motion, a beam modal function model has been used. The effects of different FML parameters such as material properties lay-up, volume fraction of metal, fiber orientation, and axial and circumferential wavenumbers on the vibration of the shell have been studied. The frequencies of shells have been calculated for carbon/epoxy and glass/epoxy as composites and for aluminum as metal. The results demonstrate that the influences of FML lay-up and volume fraction of composite on the frequencies of the shell are remarkable.
    Type of Medium: Online Resource
    ISSN: 1077-5463 , 1741-2986
    URL: Article
    DOI: 10.1177/1077546317698619
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2070247-4
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  • 7
    Online Resource
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    Experimental verification of the virtual isotropic material concept for the last-ply-failure of U-notched quasi-isotropic E-glass/epoxy composite laminates under tension-shear loading
    SAGE Publications ; 2022
    In:  Journal of Industrial Textiles Vol. 51, No. 3_suppl ( 2022-06), p. 3949S-3979S
    Details
    In: Journal of Industrial Textiles, SAGE Publications, Vol. 51, No. 3_suppl ( 2022-06), p. 3949S-3979S
    Abstract: Fracture investigation of U-notched E-glass/epoxy laminated composite specimens with various notch root radii is performed under mixed mode I/II loading conditions both experimentally and theoretically. Rectangular E-glass/epoxy composite laminates with two numbers of ply (8-ply and 16-ply) and the quasi-isotropic [0/90/+45/–45] s lay-up configuration are fabricated for conducting the fracture tests. To measure the damage initiation angles (DIAs) and the last-ply-failure (LPF) loads of the fabricated composite samples containing horizontal and inclined U-notches, as the main aim of this study, the specimens are loaded under tension by the universal testing machine. The experimental LPF loads are theoretically predicted with the aid of a novel concept, called the Virtual Isotropic Material Concept (VIMC). The proposed VIMC is linked to the two well-known stress-based fracture criteria, namely the maximum tangential stress (MTS) and the mean stress (MS) criteria, in the context of the linear elastic notch fracture mechanics (LENFM). It is proved that the two combined criteria, namely the VIMC-MTS and VIMC-MS criteria, can predict well the LPF loads of the U-notched laminated composite specimens tested under mixed mode I/II loading conditions. One of the important merits of these new criteria is that the predictions of the LPF loads of the U-notched composite specimens are performed without complicated and time-wasting ply-by-ply damage analyses.
    Type of Medium: Online Resource
    ISSN: 1528-0837 , 1530-8057
    URL: Article
    DOI: 10.1177/1528083720955205
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2095351-3
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