Описан метод преобразования традиционной разводки печатной платы в полигональную с предварительным рассмотрением вопросов построения триангуляции Делоне, диаграммы Вороного и эквидистанты к контуру.Описаний метод дозволяє автоматизувати процес полігонального розведення друкованих плат, що потрібен при проектуванні потужних радіопередавачів, а також багатошарових друкованих плат, коли на опорному шарі є присутними декілька різних кіл живлення.The described method allows to automate the polygonal interconnection process, which is essential for powerful radio transmitters designing, and also for multi-layer printed circuit boards designing, when the reference layer includes several different circuits

Batistatou, Evridiki

Crozier, Stuart

de Vocht, Frank

Gowland, Penny

Keevil, Stephen

Kromhout, Hans

Molter, Anna

Schaap, Kristel

van Tongeren, Martie

Технология и конструирование в электронной аппаратуре

OBJECTIVES: Recent studies have consistently shown that amongst staff working with MRI, transient symptoms directly attributable to the MRI system including dizziness, nausea, tinnitus, and concentration problems are reported. This study assessed symptom prevalence and incidence in radiographers and other staff working with MRI in healthcare in the UK. METHODS: One hundred and four volunteer staff from eight sites completed a questionnaire and kept a diary to obtain information on subjective symptoms and work practices, and wore a magnetic field dosimeter during one to three randomly selected working days. Incidence of MRI-related symptoms was obtained for all shifts and prevalence of MRI-related and reference symptoms was associated to explanatory factors using ordinal regression. RESULTS: Incident symptoms related to working with MRI were reported in 4 % of shifts. Prevalence of MRI-related, but not reference symptoms were associated with number of hours per week working with MRI, shift length, and stress, but not with magnetic field strength (1.5 and 3 T) or measured magnetic field exposure. CONCLUSIONS: Reporting of prevalent symptoms was associated with longer duration of working in MRI departments, but not with measured field strength of exposure. Other factors related to organisation and stress seem to contribute to increased reporting of MRI-related symptoms. KEY POINTS: • Routine work with MRI is associated with increased reporting of transient symptoms • No link to the strength of the magnetic field was demonstrated. • Organisational factors and stress additionally contribute to reporting of MRI-related symptoms

Mölter, Anna

Utrecht University Repository

Transient health symptoms of MRI staff working with 1.5 and 3.0 Tesla scanners in the UK

De Vocht, Frank

Kromhout, H.

Schaap, K.

Van Tongeren, Martie

Crozier, S.

Gowland, P.

Keevil, S.

The University of Manchester - Institutional Repository

Муров, С.Ю.

Наукова електронна бібліотека періодичних видань НАН України (Vernadsky National Library of Ukraine)

Метод преобразования обычной разводки печатных плат в полигональную

Frank de Vocht

Evridiki Batistatou

Anna Mölter

Hans Kromhout

Kristel Schaap

Martie van Tongeren

Stuart Crozier

Penny Gowland

Stephen Keevil

Crossref

European Radiology

OBJECTIVES: Recent studies have consistently shown that amongst staff working with MRI, transient symptoms directly attributable to the MRI system including dizziness, nausea, tinnitus, and concentration problems are reported. This study assessed symptom prevalence and incidence in radiographers and other staff working with MRI in healthcare in the UK.METHODS: One hundred and four volunteer staff from eight sites completed a questionnaire and kept a diary to obtain information on subjective symptoms and work practices, and wore a magnetic field dosimeter during one to three randomly selected working days. Incidence of MRI-related symptoms was obtained for all shifts and prevalence of MRI-related and reference symptoms was associated to explanatory factors using ordinal regression.RESULTS: Incident symptoms related to working with MRI were reported in 4 % of shifts. Prevalence of MRI-related, but not reference symptoms were associated with number of hours per week working with MRI, shift length, and stress, but not with magnetic field strength (1.5 and 3 T) or measured magnetic field exposure.CONCLUSIONS: Reporting of prevalent symptoms was associated with longer duration of working in MRI departments, but not with measured field strength of exposure. Other factors related to organisation and stress seem to contribute to increased reporting of MRI-related symptoms.KEY POINTS: • Routine work with MRI is associated with increased reporting of transient symptoms • No link to the strength of the magnetic field was demonstrated. • Organisational factors and stress additionally contribute to reporting of MRI-related symptoms.</p

Explore Bristol Research

LS IRAS EEPI EXAS (Arb.hyg+bl.st.kar.)

Risk Assessment of Toxic and Immunomodulatory Agents

IRAS RATIA2

NARCIS 

Objectives: Recent studies have consistently shown that amongst staff working with MRI, transient symptoms directly attributable to the MRI system including dizziness, nausea, tinnitus, and concentration problems are reported. This study assessed symptom prevalence and incidence in radiographers and other staff working with MRI in healthcare in the UK. Methods: One hundred and four volunteer staff from eight sites completed a questionnaire and kept a diary to obtain information on subjective symptoms and work practices, and wore a magnetic field dosimeter during one to three randomly selected working days. Incidence of MRI-related symptoms was obtained for all shifts and prevalence of MRI-related and reference symptoms was associated to explanatory factors using ordinal regression. Results: Incident symptoms related to working with MRI were reported in 4\ua0% of shifts. Prevalence of MRI-related, but not reference symptoms were associated with number of hours per week working with MRI, shift length, and stress, but not with magnetic field strength (1.5 and 3\ua0T) or measured magnetic field exposure. Conclusions: Reporting of prevalent symptoms was associated with longer duration of working in MRI departments, but not with measured field strength of exposure. Other factors related to organisation and stress seem to contribute to increased reporting of MRI-related symptoms. Key Points: • Routine work with MRI is associated with increased reporting of transient symptoms • No link to the strength of the magnetic field was demonstrated. • Organisational factors and stress additionally contribute to reporting of MRI-related symptom

University of Queensland eSpace

Метод преобразования обычной разводки печатных плат в полигональную

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