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Showing results for: longitudinal

Chicken or egg? Attribution hypothesis and nocebo hypothesis to explain somatization associated to perceived RF-EMF exposure

Research RF Safe Research Library Jan 1, 2025

This longitudinal cohort study examined the temporal relationship between somatization and perceived RF-EMF exposure, comparing the attribution hypothesis with the nocebo hypothesis. Using AMIGO questionnaire data from 2011 and 2015, regression analyses suggested the attribution hypothesis more often explained…

Differential impacts of co-exposures to ELF-EMFs and noise on prostate-specific antigen levels: A longitudinal study.

Research RF Safe Research Library Jan 1, 2025

This 8-year longitudinal study of thermal power station workers assessed co-exposure to occupational noise and ELF-EMFs in relation to PSA levels. Noise exposure (LAeq) was associated with increased log-PSA in both unadjusted and adjusted models, and the association persisted after adjusting for ELF-EMFs. ELF-EMF…

Evaluating the use of cell phone messaging for community Ebola syndromic surveillance in high risked settings in Southern Sierra Leone.

Research RF Safe Research Library Jan 1, 2015

This longitudinal analysis evaluated cell phone messaging (texts and calls) as a tool for community Ebola syndromic surveillance in Moyamba District, Southern Sierra Leone (Aug–Oct 2014). The authors report that the cell phone alert system captured suspect and confirmed Ebola cases and mortality alerts, with many…

Mobile Phone Assessment in Egocentric Networks: A Pilot Study on Gay Men and Their Peers.

Research RF Safe Research Library Jan 1, 2014

This article describes a mobile phone-based pilot study in egocentric networks of 12 gay men and their peers (44 participants total). Participants completed daily mobile assessments of HIV-transmission and general health behaviors, and phone log data were collected from gay men with Android phones. The paper focuses…

Investigation of electric field enhancement between metal blocks at the focused field generated by a radially polarized beam.

Research RF Safe Research Library Jan 1, 2013

This engineering/optics study examines focusing properties of a radially polarized beam interacting with gold metal cubes arranged along the beam propagation direction. It reports >20d7 electric field enhancement between two cubes separated by bb/10 on the optical axis, linked to a strong longitudinal field and…

Spin polarization induced by in-plane electric and magnetic fields in two-dimensional heavy-hole systems.

Research RF Safe Research Library Jan 1, 2010

This theoretical study uses a nonequilibrium Green function approach to analyze current-induced spin polarization in a two-dimensional heavy-hole system with cubic Rashba spin-orbit coupling under in-plane electric and magnetic fields. The authors report monotonic decreases in longitudinal conductivity with…

In vitro magnetic stimulation of pig phrenic nerve with transverse and longitudinal induced electric fields: analysis of the stimulation site.

Research RF Safe Research Library Jan 1, 2009

This in vitro study analyzed where magnetic stimulation activates pig phrenic nerves when induced electric fields are oriented longitudinally versus transversely to the nerve trunk. Longitudinal-field stimulation localized activation near the negative peak of the spatial derivative of the longitudinal electric field,…

Theory for nanoparticle retention time in the helical channel of quadrupole magnetic field-flow fractionation.

Research RF Safe Research Library Jan 1, 2009

This paper presents a theoretical treatment of nanoparticle retention in quadrupole magnetic field-flow fractionation (QMgFFF) using a helical separation channel. It defines the retention ratio as the ratio of transit times for non-retained versus retained material. Equations are derived for angular and longitudinal…

Arthroscopic capsular shrinkage for chronic ankle instability with thermal radiofrequency: prospective multicenter trial.

Research RF Safe Research Library Jan 1, 2008

This prospective multicenter longitudinal trial evaluated arthroscopic thermal radiofrequency capsular shrinkage for chronic ankle instability in adults who failed conservative therapy. The study reports no clinically relevant improvement in mechanical stability, but substantial and statistically significant…

Electronic response properties of carbon nanotubes in magnetic fields.

Research RF Safe Research Library Jan 1, 2008

This computational study investigates magnetic linear response properties of achiral and chiral carbon nanotubes using first-principles electronic structure methods. It computes magnetic shielding inside and outside nanotubes due to electronic currents induced by external magnetic fields applied parallel or…

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