Crack detection in a rotating shaft using artificial neural networks and PSD characterisation

Peer reviewedPostprin

Recurrence Relations for Moments of Dual Generalized Order Statistics from Weibull Gamma Distribution and Its Characterizations

In this paper, we establish explicit forms and new recurrence relations satisfied by the single and product moments of dual generalized order statistics from Weibull gamma distribution (WGD). The results include as particular cases the relations for moments of reversed order statistics and lower records.We present characterizations ofWGD based on (i) recurrence relation for single moments, (ii) truncated moments of certain function of the variable and (iii) hazrad function

Virtual integration platform for computational fluid dynamics

Computational Fluid Dynamics (CFD) tools used in shipbuilding industry involve multiple disciplines, such as resistance, manoeuvring, and cavitation. Traditionally, the analysis was performed separately and sequentially in each discipline, which often resulted in conflict and inconsistency of hydrodynamic prediction. In an effort to solve such problems for future CFD computations, a Virtual Integration Platform (VIP) has been developed in the University of Strathclyde within two EU FP6 projects - VIRTUE and SAFEDOR1. The VIP provides a holistic collaborative environment for designers with features such as Project/Process Management, Distributed Tools Integration, Global Optimisation, Version Management, and Knowledge Management. These features enhance collaboration among customers, ship design companies, shipyards, and consultancies not least because they bring together the best expertise and resources around the world. The platform has been tested in seven European ship design companies including consultancies. Its main functionalities along with advances are presented in this paper with two industrial applications

Evaluation of Post-operative Pain after Irrigation Using End-vented NaviTip Tips versus Vibringe Sonic Irrigating System in Teeth with Acute Pulpitis with Apical Periodontitis: A Randomized Clinical Trial

AIM: This clinical study was conducted to evaluate and compare the post-operative pain after the using of two different irrigating techniques: Vibringe sonic irrigating system with end-vented NaviTip and conventional needle with end-vented NaviTip immediate postoperatively and 4, 12, 24, 48, and 72 h and 7 days utilizing a numerical rating scale (NRS). METHODS: Thirty-eight patients with acute pulpitis with apical periodontitis were involved in this study. Root canals were prepared using NiTi ProTaper Universal rotary system then randomized into two equal groups according to the technique used for irrigation Group A, Vibringe sonic irrigating system with end-vented NaviTip and Group B, conventional syringe with end-vented NaviTip® irrigating tip. The needles of irrigation were penetrated 2 mm shorter than the working length. The trial design of this study is a parallel randomized controlled trial. RESULTS: All demographic data, clinical and radiographic findings, and modified NRS scores obtained from patients were statistically analyzed. Results showed that there was no statistically difference between the two groups regarding the demographic data, prevalence of pre-operative pain, after 4 h, 12 h, 24 h, and 48 h and 7 days, while in both groups, there was a statistically significant decrease in pain intensity preoperatively compared with all other time periods. CONCLUSION: There is no statistical significance difference between Vibringe sonic irrigating syringe with endvented needle and conventional syringe with end-vented NaviTip, while in both groups, there was a statistically significant decrease in pain intensity preoperatively compared with all other time periods

Energy Efficient Smart Wireless Sensor Network for Border Monitoring

The main concern of wireless sensor network is the flexibility and the power to execute different control tasks. This paper presents low power flexible controller for an intrusion detection using power gating technique to reduce the static power loss and fuzzy logic controller, the input signals are proceeded from a PIR, an acoustic and magnetic sensors, the output is presented as an alarm to define the kind of the intrusion. The system behavior is simulated using MATALB-SIMULINK

DEVELOPMENT OF SPECTROPHOTOMETRIC METHODS FOR THE ANALYSIS OF FLORFENICOL IN BULK AND DOSAGE FORMS

Objectives: The objective of this research was to develop simple, sensitive and accurate zero ( °D), first (1D) and second (2D) order derivative spectrophotometric methods for the analysis of florfenicol in bulk and dosage forms.Methods: The original UV spectrum (zero-order) of florfenicol aqueous solution was measured at 267 nm against its blank. This spectrum was then differentiated instrumentally to generate the first and second derivative spectra which were measured at 274 nm and 281 nm, respectively. The developed methods were validated as per ICH guidelines.Results: Regression data of the developed methods obeyed Beer's law over the concentration range 3˗15µg/ml with a good correlation coefficient (not less than 0.998). Limits of detection were found to be 0.68, 1.30, 1.13µg/ml and limits of quantification were 2.05, 3.87, 3.58µg/ml for °D, 1D and 2D order derivative, respectively. The developed methods demonstrated good inter-day and intra-day precision at the three modes. The obtained recovery percentage (98.3±1.8%; n=3) reflected the freedom from interference by the excipients.Conclusion: The statistical validation at 95% confidence level proves the sensitivity, accuracy and precision of the developed methods.Keywords: Florfenicol, Spectrophotometry, Derivative spectra, Dosage for

Optimization of growth and extracellular glucoamylase production by Candida famata isolate

Candida famata was isolated from traditional Moroccan sourdough. It exhibited high glucoamylase and biomass production. Starch induces high glucoamylase production C. famata with maximum glucoamylase activity at 5 g/L. Glucose stimulates good production in biomass but strongly inhibitsglucoamylase production. Among the sources of nitrogen tested, yeast extract and the (NH4)2HPO4 gave maximum glucoamylase and biomass after 72 h of incubation in liquid medium at 30°C, pH 5 and 105 rpm

An empirical investigation of the influence of organizational culture on individual readiness for change in Syrian manufacturing organizations

Purpose - While few recent studies have paid attention to the relationship between Organizational Culture (OC) and Individual Readiness for Change (IRFC), there is still a lack of systematic and empirical studies regarding the influence of all OC types on the IRFC components within the change management literature. This study aims to fill this gap in the literature by empirically examining the influence of all four organizational culture types of the Competing Values Framework (CVF) on the components of IRFC regarding TQM implementation, within the context of manufacturing organizations operating in Syria. Design/methodology/approach - A total of four hypotheses were proposed for testing. A questionnaire was developed and distributed to 350 Syrian Manufacturing Organizations (SMOs) in order to measure the level of IRFC and to identify the cultural profiles and characteristics of these organizations. Findings - The analysis of the collected shows that certain types of organizational culture are conducive to fostering IRFC. In particular, the findings of an empirical investigation revealed that group culture and adhocracy culture are the most supportive culture types for IRFC. Originality/value - This paper contributes to the existing literature of change management by providing empirical evidence leading to advancement of knowledge and the understanding of the relationship between OC types and IRFC components. Furthermore, the paper adds value via its contextual originality; being the first study that empirically examined the Syrian cultural context, and hence contributing to the scarce body of literature of both OC and IRFC, and in particular the developing countries

Optical study of the vibrational and dielectric properties of BiMnO3

BiMnO3 (BMO), ferromagnetic (FM) below Tc = 100 K, was believed to be also ferroelectric (FE) due to a non-centro-symmetric C2 structure, until diffraction data indicated that its space group is the centro-symmetric C2/c. Here we present infrared phonon spectra of BMO, taken on a mosaic of single crystals, which are consistent with C2/c at any T > 10 K, as well as room-temperature Raman data which strongly support this conclusion. We also find that the infrared intensity of several phonons increases steadily for decreasing T, causing the relative permittivity of BMO to vary from 18.5 at 300 K to 45 at 10 K. At variance with FE materials of displacive type, no appreciable softening has been found in the infrared phonons. Both their frequencies and intensities, moreover, appear insensitive to the FM transition at Tc

Rapid validated liquid chromatographic method coupled with Tandem mass spectrometry for quantification of nintedanib in human plasma

Purpose: To develop and validate a fast, sensitive, and simple liquid chromatographic method coupled with tandem mass spectrometry for the determination of the potent tyrosine kinase inhibitor, ninetedanib (NTB) in plasma, utilizing cyclobenzaprine (CBP) as internal standard (IS).Methods: Separation of the two components (NTB and CBP) was performed on a pentafluorophenyl (PFP) reversed phase column (50 × 2 mm, 3μm) at ambient temperature using isocratic elution with acetonitrile-water (60:40, v/v) containing 0.01 M ammonium formate buffer (pH 4.2) at a flow rate of 0.4 mL/min. NTB and CBP were monitored by a triple quadrupole tandem mass spectrometer with electrospray ionization source in the positive ion mode. The current method was validated following the European Medicines Agency (EMA) guidelinesResults: The proposed method allowed rapid and specific quantification of NTB in the calibration range of 2 - 150 ng/mL and determination coefficient of ≥ 0.999. Intra- and inter-day accuracy and precision were < 4 % in all cases.Conclusion: The developed procedure is rapid, specific, reliable, and validated for quantification of NTB in human plasma, and thus can be applied efficiently for the analysis of clinical samples containing NTB.Keywords: Nintedanib assay, Cyclobenzaprine, LC-MS/MS, Validatio