663 research outputs found

    The Effect of Thin Film Adhesives on Mode II Interlaminar Fracture Toughness in Carbon Fiber Composites with Shape Memory Alloy Inserts

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    A single sheet of nickel-titanium (NiTi) shape memory alloy (SMA) was introduced within an IM7/8552 polymer matrix composite (PMC) panel in conjunction with multiple thin film adhesives to promote the interfacial bond strength between the SMA and PMC. End notched flexure (ENF) testing was performed in accordance to ASTM D7905 method for evaluation of mode II interlaminar fracture toughness (GIIC) of unidirectional fiber-reinforced polymer matrix composites. Acoustic emissions (AE) were monitored during testing with two acoustic sensors attached to the specimens. The composite panels examined using scanning electron microscopy techniques after part failure. GIIC values for the control composite samples were found to be higher than those of samples with embedded SMA sheets. The presence of adhesives bonded to SMA sheets further diminished the GIIC values. AE values revealed poor bonding of the panels, with little to no signals during testing

    Comparison of cephalometric craniofacial features and facial photographic features for two generations of patients

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    Objective: To estimate the correlation and variant heritability values of craniofacial variables between parents and their offspring. Materials and Methods: The sample comprised 20 Indian families; each family consisted of father, mother, son, and daughter. Lateral cephalometric radiographs and facial photographs were taken for each family member.Fifty -three angular, linear, and proportional cephalometric variables were measured and photographic analysis was done. Interfamilial correlations and heritability (h2) values were estimated among father-son, father-daughter,mother-son, and mother-daughter pairings. Results: The most similar angular measurements between parents and offspring were as follows:SNA0,SNB0 ,ANB0 ,FMA0, MP-FH0 , LI-NB0, Op-FH0 ,UI-NA0 , OP-SN0, LI-NB0 and The most similar linear measurements were as follows: Co-Pt.A,Co-Gn, N- ANS, , UI-A, Me-Me’,LI-A.Pog, Mx 1 exposure. Both the correlation coefficients and the heritable values were stronger in the father-offspring than the mother-offspring pairings. Conclusions: The overall correlation and h2 mean values for the three types of measurements showed stronger values in the father-offspring than the mother-offspring groups, with the father –son pairings more significant than the father-daughter groups

    Effect of Thin-Film Adhesives on Mode II Interlaminar Fracture Toughness in Carbon Fiber Composites with Shape Memory Alloy Inserts

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    A single sheet of nickel-titanium (NiTi) shape memory alloy (SMA) was introduced within an IM7/8552 polymer matrix composite (PMC) panel in conjunction with multiple thin film adhesives to promote the interfacial bond strength between the SMA and PMC. End notched flexure (ENF) testing was performed in accordance to ASTM D7905 method for evaluation of mode II interlaminar fracture toughness (GIIC) of unidirectional fiber-reinforced polymer matrix composites. Acoustic emissions (AE) were monitored during testing with two acoustic sensors attached to the specimens. The composite panels were subjected to C-scan before testing, and examined using optical and scanning electron microscopy techniques after part failure. GIIC values for the control composite samples were found to be higher than those of samples with embedded SMA sheets. The presence of adhesives bonded to SMA sheets further diminished the GIIC values. AE values revealed poor bonding of the panels, with little to no signals during testing

    Synthesis and Preliminary Anti-Inflammatory and Anti-Microbial Evaluation of New 4,5-Dihydro-1H-Pyrazole Derivatives

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    Abstract      Organic compounds with pyrazole cores have a variety of uses, notably in the pharmaceutical and agrochemical sectors. The interest in creating pyrazole compounds, examining their many features, and looking for potential uses is growing. Our work has concert with synthesis of  chalcones and pyrazolines, then finally pyrazoline-aniline derivatives and evaluation their anti-inflammatory, antibacterial and antifungal activitie

    Marketing The Non-Profit Organizations,"The Jordan Museum as a case study"

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    The aim of this paper is to analyse the existing concepts of marketing and the difficulties of applying general marketing techniques in the Jordan Museum and highlighting the strengths, weakness, threats and opportunities that are facing the museum. The paper offers marketing suggestions that may influence and assist the Jordan museum to enhance its marketing structure. The gained information for the research was obtained byusing articles, books, case studies, interviews. This method is used to gain Varity of information, points of views, and attitudes. The questions deducted in the interviews focused on whether if the Museum in question is placed on the well-known tourist trail. Another focus was upon the tools & techniques should be used in marketing. The paper also investigated if there is any marketing plan considered and whether the museums in Jordan has been discussed or even mentioned in any of the international tourism or cultural conference’s Which Jordan is invited to. The result showed that The Jordan Museum lacks any marketing innovation and having no clear marketing plan. The museum can overcome this by reconsidering its priorities enclosing new marketing techniques.  Key Words: Museums, Marketing mix, Nonprofit Organization DOI: 10.7176/JTHS/40-0

    Advances for Treating in-Hospital Cardiac Arrest: Safety and Effectiveness of a New Automatic External Cardioverter-Defibrillator

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    OBJECTIVES: The purpose of this study was to prospectively analyze the performance and safety of a new programmable, fully automatic external cardioverter-defibrillator (AECD) in a European multicenter trial. BACKGROUND Although, the response time to cardiac arrest (CA) is a major determinant of mortality and morbidity, in-hospital strategies have not significantly changed during the last 30 years. METHODS: Patients (n = 117) at risk of CA in monitored wards (n = 51) and patients undergoing electrophysiologic testing or implantable cardioverter-defibrillator (ICD) implantation (n = 66) were enrolled. The accuracy of the automatic response of the device to any change of rhythm (lasting >1 s and >4 beats) was confirmed by reviewing the simultaneously recorded Holter data and the programmed parameters. RESULTS: During 1,240 h, 1,988 episodes of rhythm changes were documented. A total of 115 episodes lasted > or =10 s or needed treatment (pacing, n = 32; ICD, n = 51; AECD, n = 35) for termination. The device detected ventricular tachyarrhythmias with a sensitivity of 100% and specificity of 97.6% (true negatives, n = 1,454; true positives, n = 499; false positives, n = 35; false negatives, n = 0). The false positives were all caused by T-wave oversensing during ventricular pacing. There were no complications or adverse events. The mean response time was 14.4 s for those episodes needing a full charge of the capacitor. CONCLUSIONS: This new AECD is safe and effective in detecting, monitoring, and treating spontaneous arrhythmias. This fully automatic device shortens the response time to treatment, and it is likely that it will significantly improve the outcome of patients with in-hospital CA
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