Search results for "SAF"

An Improved Approach to the Simulation of Single-Line-to-Ground Faults in Transmission Networks

2009

These paper presents a mathematical model for studying the Single-Line-to-Ground fault in transmission networks, giving a personal contribution for a methodical and accurate analysis of complex systems, by providing an evolution of the “circuital method” able to solve the case of a system in which more than one line supply the fault.

Trends in Medically Attended Injuries in Czech Adolescents

2017

Risk assessment of component failure modes and human errors using a new FMECA approach: application in the safety analysis of HDR brachytherapy

2014

Failure mode, effects and criticality analysis (FMECA) is a safety technique extensively used in many different industrial fields to identify and prevent potential failures. In the application of traditional FMECA, the risk priority number (RPN) is determined to rank the failure modes; however, the method has been criticised for having several weaknesses. Moreover, it is unable to adequately deal with human errors or negligence. In this paper, a new versatile fuzzy rule-based assessment model is proposed to evaluate the RPN index to rank both component failure and human error. The proposed methodology is applied to potential radiological over-exposure of patients during high-dose-rate brach…

Nutriential Hazards: Micronutrients: Vitamins and Minerals

2014

To achieve an appropriate and healthy dietary regime, it is necessary to have a balance diet with an adequate contribution of every nutrient. Micronutrients play a fundamental role for normal metabolic functioning of human body, so their deficiencies produce specific clinical manifestations as well as a wide range of non-specific physiological impairments. Under certain situations or physiological conditions (such as stress, smoking, pollution, drugs and alcohol consumption, pregnancy, lactation, etc.), nutrient requirements are even higher, being impossible to fulfill them with standard diets. In fact, over two-third of the world's population lack of one or more essential mineral elements …

HPTLC Phenolic Profiles as Useful Tools for the Authentication of Honey

2018

The present study reveals the utility of high-performance thin-layer chromatographic (HPTLC) fingerprinting of phenolic constituents for the authentication of monofloral honeys. The obtained data enables a more complete assessment of honey quality and the identification of emerging threats to honey quality. The developed procedure facilitates differentiation of varietal honeys and detection of honey adulterations. We used an HPTLC fingerprint analysis to determine the characteristic patterns of different honey types (willow, buckwheat, heather, pine honeydew, and manuka honey). The HPTLC chromatograms were used to determine the differences in the botanical origin of the honey samples on the…

En kartlegging av teknologiske hjelpemidler til personer med nyoppdaget demens

2014

Masteroppgave i helse- og sosialinformatikk HSI 500 Universitetet i Agder 2014 The main objective of the national program of welfare technology is that welfaretechnological solutions will be an integrated part of the health and care services within 2020.Several projects in this program will include safety packages. Before technological tools areimplemented, a survey regarding the needs and challenges should be conducted. The presentstudy has focused on people with dementia and their relatives, because in 2040, the number ofpeople with dementia is expected to double.Welfare technological solutions can be divided into three parts: fall, isolation, and cognitiveimpairment. Thus, the current st…

Treball social i habitatge social: binomi i oportunitat

2013

This article demonstrates through professional practice the necessary links that must exist between social work intervention and the state-subsidized housing assigned for the underprivileged population. To demonstrate this link, the results of good practices executed (mainly those in which a community vision with specific interventions have been incorporated) are shown from the historical perspective. To conclude, viable proposals are given from the local point of view.

False-positive LSD testing in urine samples from intensive care patients.

1998

Unexpected positive results for lysergic acid diethylamide (LSD) were found in urine samples from 12 patients in an intensive care unit in a routine screening using the CEDIA DAU assay. None of these test results could be confirmed by high-performance liquid chromatography analysis, but all samples contained the mucolytic drug ambroxol. Further studies demonstrated that ambroxol exhibits a significant cross-reactivity in the CEDIA DAU LSD assay. Therefore, positive LSD results obtained with the CEDIA DAU assay have to be critically evaluated, particularly during the cold season, when infections of the respiratory tract often result in more frequent use of mucolytic medications.

Hazards That Can Affect CNC Machine Tools during Operation—An AHP Approach

2020

CNC (computer numerically controlled) machine tools are highly advanced technological systems, used to machine parts by means of metal cutting processes. Their structure and kinematics are very complex, involving accurate coordinated motions on three to five axes. Operating CNC machine tools is a complicated process, which can easily be affected by errors. Nowadays, safety systems and devices are developed in order to make this process safer and more user friendly. Modern CNC controllers are designed to deal with obvious sources of hazards, such as overloads (by means of various sensor systems) and collisions (by checking the NC code syntax and simulating it on the machine). However, despit…

Safety study of an LNG regasification plant using an FMECA and HAZOP integrated methodology

2015

Abstract A safety analysis was performed to determine possible accidental events in the storage system used in the liquefied natural gas regasification plant using the integrated application of failure modes, effects and criticality analysis (FMECA) and hazard and operability analysis (HAZOP) methodologies. The goal of the FMECA technique is the estimation of component failure modes and their major effects, whereas HAZOP is a structured and systematic technique that provides an identification of the hazards and the operability problems using logical sequences of cause-deviation-consequence of process parameters. The proposed FMECA and HAZOP integrated analysis (FHIA) has been designed as a …