Analysis of Body Work Posture in Midwives During Placental Retention

The midwife's working posture when taking the placenta attached to the uterus of the laboring mother manually shows the body's posture which can cause musculoskeletal disorders. This research aims to know and study the assessment of the REBA method for midwife workers' posture in the prevention of musculoskeletal disorders. This research method is a type of observational analytic study that uses descriptive qualitative in total sampling among midwife workers. Data was collected using a REBA sheet. The results showed the results of the assessment using REBA with a final score of 13 has a level of risk "Very High" and requires immediate corrective action. This risk is caused by the back being bent and twisting laterally, the midwife's neck twisting laterally, the upper arm of the worker experiencing flexion, and the position of the arm is raised away from the body due to the position of the uterus being far and narrow. Suggestions given are efforts to control engineering, the provision of work procedures, and the procurement of healthy safety work

Predictive and prognostic modelling and simulation of coating failures due to corrosion and mechanical failures

This research presents analytical and mathematical modelling of coating failures within industrial components, structures, mobile assets and systems due to corrosive degradation and mechanical fracture. These failures lead to serval surface problems, therefore contact mechanics and electrochemistry approaches incorporating induced residual stresses have been adopted to develop a comprehensive solution for the prediction prognostic of such failures. Experimental study of film cracking and its propagation into substrates, interfacial transient behaviours and film-substrate system has been conducted. A parallel study of corrosive degradation to include cathodic delamination, cathodic blistering and tribo-corrosion of films has been conducted. Experimental and analytical studies of induced residual stresses within the coating and their effects on failure mechanisms and propagation have been completed. A detailed investigation of elastic mismatch at the interfacial contact and interfacial crack tip field has been performed and a complex stress intensity factor is presented. Mathematical derivation of oscillatory singularity, mode mix and interfacial fracture criterion to include adhesion are presented. This paper presents novel mathematical modelling incorporating interfacial crack propagating, diffusion of corrosive species and cathodic blistering for prediction and prognoses of coating failures

Solubility of hydrogen in aqueous solutions of sodium and potassium bicarbonate from 293 to 333 K

An experimental study is presented of the hydrogen solubility in aqueous salt solutions containing sodium and potassium bicarbonate from 293 to 333 K. For this purpose, gas consumption measurements have been performed by determining the ultimate pressure decrease in an intensively stirred, high pressure autoclave. Experiments were carried out at salt concentrations up to 1.0 mol kg-1. At higher salt molalities, the hydrogen solubility was too low to be measured reliably. It was demonstrated that the hydrogen solubility followed the well-known Sechenov salt concentration dependence. At 298 K, the Sechenov or salting-out parameters were equal to 0.41 and 0.32 kg mol-1 for sodium and potassium bicarbonate, respectively. Fairly good agreement was obtained with the salting-out parameters predicted by a recently developed empirical estimation method. The concentration ratio of the bicarbonate and carbonate ions showed only a minor influence on the hydrogen solubility. Furthermore, the Sechenov parameter was found to be a weak function of temperature. Virtually the same, linear temperature dependence was observed for both bicarbonate salts studied, i.e. −0.0023 and −0.0024 kg mol-1 K-1 for sodium and potassium bicarbonate, respectively

Competitiveness of Arabian gulf ports from shipping lines’ perspectives: Case of Sohar port in Oman

Purpose: The purpose of this article is to investigate the factors that encourage shipping lines to use port of Sohar, in Oman. Some selected factors were used to assess to what extent it affects the port choice from shipping lines companies’ perspective. These factors include infrastructure, hinterland, connectivity and port’s dues. Design/methodology/approach: for this study both quantitative and qualitative methodologies were used. Self-administered questionnaire used for collecting quantitative data while interviews were used to collect qualitative data. Secondary data was collected by reviewing academic literature and recent relevant articles and reports. Findings: Port of Sohar has a better opportunity to be the gateway of the Gulf Cooperation Council (GCC) States and all Cargo could have dropped in the port and transferred to other GCC States by road, rail and other transportation modes. This opportunity is gained by the strategic location of Sohar Port outside of the Strait of Hormuz. It can be concluded that port competitiveness can be improved through strategic location, improved hinterland conditions, port facilities, services cost, volume of cargo, connectivity to other ports and dwell time factor. Research limitations: The research was limited mainly by conducting it only at the port of Sohar because surrounding ports are too far away and it should involve more ports to gain comparative results. Limited number of stakeholders as Port Authority, Oman International Container Terminal (OICT) and shipping lines companies and agents is another limitation. Practical implications: The port can improve its competitive advantages and focus on the investigated factors. The government can also continue in working in the three big infrastructural projects; the new express roads, Sohar Airport and rail network connections with other GCC networks. Originality/value: the study used specific factors that expected to contribute to the shipping lines companies’ selection of ports in the gulf region. This could help the port to identify their competitive advantage and how they can use these competencies to improve their competitiveness in relation to other ports in the region.Peer Reviewe

Bibliography of communication and research products

"This publication is a compendium of NIOSH publications and reports produced during calendar year 2003. Citations are listed by category including: I. Journal Articles; II. Book Chapters; III. DHHS NIOSH Numbered Publications; IV. Abstracts/Proceedings; V. Control Technology Reports; VI. Fatality Assessment and Control Evaluation; VII. Fire Fighter Fatality Investigation and Prevention Reports; and, VIII. Hazard Evaluation and Technical Assistance Reports. Author, keyword and National Occupational Research Agenda (NORA) priority area indexes are also included. " - NIOSHTIC-2I. Journal articles -- II. Book chapters -- III. NIOSH numbered publications -- IV. Abstracts/ Proceedings -- V. Control technology reports -- VI. Fatality assessment and control evaluation reports -- VII. Fire fighter fatality investigation and prevention reports -- VIII. Health hazard evaluation reports -- IX. Author index -- X. Keyword index -- XI. National Occupational Research Agenda (NORA) index"April 2004."Also available via the World Wide Web

Pattern-based Pressure Drop Of Air–water Flow Across A 90° Sharp Mitre Elbow

Air–water flow in a 90° sharp elbow (mitre bend) is studied in a new purpose-built experimental facility at the University of Sheffield. For the first time, the two-phase flow is investigated in a mitre bend for water-based Reynolds numbers Rew = 5600–12800 and water-to-air mass flow rate ratios mw/ma=10–3800. Four different flow patterns are observed in the upstream pipe (plug, slug, slug-annular and annular) by using a high-speed high-resolution camera. The results show that the perturbation length upstream and downstream of the elbow and the pressure drop are significantly affected by the flow patterns. Two new values of the Lockhart–Martinelli parameter C are found for the pressure drop across the elbow

Extraction of the underlying structure of systematic risk from non-Gaussian multivariate financial time series using independent component analysis: Evidence from the Mexican stock exchange

Regarding the problems related to multivariate non-Gaussianity of financial time series, i.e., unreliable results in extraction of underlying risk factors -via Principal Component Analysis or Factor Analysis-, we use Independent Component Analysis (ICA) to estimate the pervasive risk factors that explain the returns on stocks in the Mexican Stock Exchange. The extracted systematic risk factors are considered within a statistical definition of the Arbitrage Pricing Theory (APT), which is tested by means of a two-stage econometric methodology. Using the extracted factors, we find evidence of a suitable estimation via ICA and some results in favor of the APT.Peer ReviewedPostprint (published version

Bruce Hills and Judith Hills, Mard D. Hills v. United Parcel Service Inc., UPSCO United Parcel Service Co., Liberty Mutual Holding Company Inc., Liberty Mutual Fire Insurance Company, Skyline Electric Company : Reply Brief

ON APPEAL FROM THE THIRD JUDICIAL DISTRICT COURT SALT LAKE COUNTY, STATE OF UTAH, HONORABLE TERRY L. CHRISTIANSE