scholarly journals A novel method to determine perineal artery occlusion among male bicyclists

2015 ◽  
Author(s):  
Sujeeth Parthiban ◽  
James M Hotaling ◽  
Martin Kathrins ◽  
Amit P Baftiri ◽  
Sally Freels ◽  
...  
Keyword(s):  
Doppler Ultrasonography ◽  
Force Measurement ◽  
Significant Risk ◽  
Artery Occlusion ◽  
Healthy Men ◽  
Occlusion Time ◽  
The Road ◽  
Non Invasive ◽  
Novel Method

Background: Perineal pressure due to bicycle riding has been associated with erectile dysfunction. We developed a novel method to measure the occlusive force exerted over the perineal arteries and determined perineal artery occlusion by a variety of seat designs. Methods: Doppler ultrasonography facilitated perineal artery localization and determination of the force required for perineal artery occlusion in 20 healthy men. Flexiforce® sensors were affixed over the proximal and distal aspects of the perineal arteries bilaterally. Individuals completed bicycle rides in the road- and stationary-settings with six distinct seat designs. , including those with and without an anterior “nose”. Results: The occlusion time proportion of the total ride time was calculated for each trial. The overall occlusion time proportion was 0.59 (95% CI 0.45-0.73) across all seats and settings. The “no-nose” bicycle seat and the stationary-setting demonstrated significantly lower occlusion proportion times than the traditional nose bicycle seat and road-setting, respectively. However, all bicycle seats yielded an occlusion time proportion of 0.41 or greater. Discussion: Our method of real-time, non-invasive force measurement localized to the perineal arteries may be used to validate future bicycle seat design. It also underscores the significant risk of perineal artery insufficiency in men who are avid bicyclists. This risk may be minimized by using newer “no-nose” bicycle seats.

scholarly journals A novel method to determine perineal artery occlusion among male bicyclists

PeerJ ◽  
2015 ◽  
Vol 3 ◽  
pp. e1477
Author(s):  
Sujeeth Parthiban ◽  
James M. Hotaling ◽  
Martin Kathrins ◽  
Amit P. Baftiri ◽  
Sally Freels ◽  
...  
Keyword(s):  
Doppler Ultrasonography ◽  
Force Measurement ◽  
Significant Risk ◽  
Artery Occlusion ◽  
Healthy Men ◽  
Occlusion Time ◽  
The Road ◽  
Non Invasive ◽  
Novel Method

Background.Perineal pressure due to bicycle riding has been associated with erectile dysfunction. We developed a novel method to measure the occlusive force exerted over the perineal arteries and determined perineal artery occlusion by a variety of seat designs.Methods.Doppler ultrasonography facilitated perineal artery localization and determination of the force required for perineal artery occlusion in 20 healthy men. Flexiforce®sensors were affixed over the proximal and distal aspects of the perineal arteries bilaterally. Individuals completed bicycle rides in the road- and stationary-settings with six distinct seat designs, including those with and without an anterior “nose.”Results.The occlusion time proportion of the total ride time was calculated for each trial. The overall occlusion time proportion was 0.59 (95% CI [0.45–0.73]) across all seats and settings. The “no-nose” bicycle seat and the stationary-setting demonstrated significantly lower occlusion proportion times than the traditional nose bicycle seat and road-setting, respectively. However, all bicycle seats yielded an occlusion time proportion of 0.41 or greater.Discussion.Our method of real-time, non-invasive force measurement localized to the perineal arteries may be used to validate future bicycle seat design. It also underscores the significant risk of perineal artery insufficiency in men who are avid bicyclists. This risk may be minimized by using newer “no-nose” bicycle seats.

scholarly journals A novel method to determine perineal artery occlusion among male bicyclists

2015 ◽  
Author(s):  
Sujeeth Parthiban ◽  
James M Hotaling ◽  
Martin Kathrins ◽  
Amit P Baftiri ◽  
Sally Freels ◽  
...  
Keyword(s):  
Doppler Ultrasonography ◽  
Force Measurement ◽  
Significant Risk ◽  
Artery Occlusion ◽  
Healthy Men ◽  
Occlusion Time ◽  
The Road ◽  
Non Invasive ◽  
Novel Method

Background: Perineal pressure due to bicycle riding has been associated with erectile dysfunction. We developed a novel method to measure the occlusive force exerted over the perineal arteries and determined perineal artery occlusion by a variety of seat designs. Methods: Doppler ultrasonography facilitated perineal artery localization and determination of the force required for perineal artery occlusion in 20 healthy men. Flexiforce® sensors were affixed over the proximal and distal aspects of the perineal arteries bilaterally. Individuals completed bicycle rides in the road- and stationary-settings with six distinct seat designs. , including those with and without an anterior “nose”. Results: The occlusion time proportion of the total ride time was calculated for each trial. The overall occlusion time proportion was 0.59 (95% CI 0.45-0.73) across all seats and settings. The “no-nose” bicycle seat and the stationary-setting demonstrated significantly lower occlusion proportion times than the traditional nose bicycle seat and road-setting, respectively. However, all bicycle seats yielded an occlusion time proportion of 0.41 or greater. Discussion: Our method of real-time, non-invasive force measurement localized to the perineal arteries may be used to validate future bicycle seat design. It also underscores the significant risk of perineal artery insufficiency in men who are avid bicyclists. This risk may be minimized by using newer “no-nose” bicycle seats.

scholarly journals A Virtual Instrument for Road Vehicle Classification Based on Piezoelectric Transducers

Sensors ◽  
2020 ◽  
Vol 20 (16) ◽  
pp. 4597 ◽  
Author(s):  
Bernardino González ◽  
Francisco J. Jiménez ◽  
José De Frutos
Keyword(s):  
Virtual Instrument ◽  
Piezoelectric Transducers ◽  
Vehicle Classification ◽  
Signal Acquisition ◽  
The Road ◽  
Non Invasive ◽  
Novel Method ◽  
On The Road ◽  
Real Traffic

This paper describes a virtual instrument capable of the automatic and quasi-instantaneous classification of a vehicle according to category when it is driving along the road. The vehicle’s classification is based on accurate measurements of both the vehicle’s speed and its wheelbase. Our research is focused on achieving accurate speed and wheelbase measurements and then determining the category of the vehicle through the developed software. The vehicle categorization is based on the wheelbase measurements and the number of axles and metal masses of the vehicle. The system has a complementary magnetic sensor, which helps in classifying the vehicle when the wheelbase measurement could be representative of different categories, and a camera to confirm the results of the experiment. The proposed measurement system presents a novel method for classifying vehicles according to type using piezoelectric transducers (piezo sensors). In addition, no system references have been found that encompass the functionalities of the presented system based on the information of only two piezoelectric transducers. The system has important advantages over current alternatives (systems based on inductive loops, cameras, fiber optic sensors or lasers), the installation is simple and non-invasive and with a success rate of the classification greater than 90%. The system consists of a signal acquisition point on the pavement, signal conditioning hardware and a data acquisition (DAQ) module, which links the hardware and the virtual instrument developed in LabVIEW®. Finally, the system has been tested on the road with real traffic, and the experimental results are presented and discussed in this paper.

Non-invasive evaluation of cardiac repolarization in mice exposed to single-wall carbon nanotubes and ceria nanoparticles via intratracheal instillation

2016 ◽  
Vol 3 (3) ◽  
pp. 611-618 ◽  
Author(s):  
Karshak Kosaraju ◽  
Jarrett L. Lancaster ◽  
Stephen R. Meier ◽  
Steven Crawford ◽  
Steven Hurley ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Intratracheal Instillation ◽  
Single Wall Carbon Nanotubes ◽  
Cardiac Repolarization ◽  
Ceria Nanoparticles ◽  
Single Wall Carbon ◽  
Non Invasive ◽  
Novel Method ◽  
Invasive Evaluation

A novel method is proposed for non-invasive determination of cardiovascular toxicity due to ceria nanoparticles and single-wall carbon nanotubes from intratracheal instillation in mice.

Putting the brain in Jeopardy: a novel comprehensive and expressive language task?

2006 ◽  
Vol 18 (2) ◽  
pp. 115-119 ◽  
Author(s):  
Erik Magnus Berntsen ◽  
Inge-Andre Rasmussen ◽  
Petter Samuelsen ◽  
Jian Xu ◽  
Olav Haraldseth ◽  
...  
Keyword(s):  
Expressive Language ◽  
Brain Regions ◽  
Hemispheric Lateralization ◽  
Healthy Men ◽  
Non Invasive ◽  
Language Areas ◽  
The Brain ◽  
Written Informed Consent ◽  
Hemispheric Language Dominance

Objective:To develop and test a novel fMRI compatible comprehensive and expressive language task that reliably and predictably activates both Wernicke's and Broca's cortical brain regions, respectively, and has utility for the determination of hemispheric language dominance.Methods:Ten healthy men (seven) and women (three) were administered a task based on the television game Jeopardy that was adapted for fMRI presentation. The task was programmed using E-PRIME software and designed to run as an event-related experiment. The study was conducted on 3 T MRI Phillips Intera scanner, and data was anlysed using Brain Voyager QX. All subjects provided written informed consent.Results:The Jeopardy task produced robust left hemisphere activation in regions corresponding to Wernicke's and Broca's areas.Conclusion:This novel fMRI compatible task (Jeopardy) reliably maps both Broca's and Wernicke's areas with robust hemispheric lateralization. It is potentially useful in language localization studies as it offers advantages over conventional procedures and other fMRI tasks by virtue of being non-invasive and mapping both language areas in one experiment.

A novel method for the determination of linting propensity of paper

TAPPI Journal ◽  
2012 ◽  
Vol 11 (10) ◽  
pp. 9-17
Author(s):  
ALESSANDRA GERLI ◽  
LEENDERT C. EIGENBROOD
Keyword(s):  
Ash Content ◽  
The Novel ◽  
Offset Printing ◽  
Excellent Correlation ◽  
End Conditions ◽  
Bottom Side ◽  
Novel Method ◽  
Total Fraction

A novel method was developed for the determination of linting propensity of paper based on printing with an IGT printability tester and image analysis of the printed strips. On average, the total fraction of the surface removed as lint during printing is 0.01%-0.1%. This value is lower than those reported in most laboratory printing tests, and more representative of commercial offset printing applications. Newsprint paper produced on a roll/blade former machine was evaluated for linting propensity using the novel method and also printed on a commercial coldset offset press. Laboratory and commercial printing results matched well, showing that linting was higher for the bottom side of paper than for the top side, and that linting could be reduced on both sides by application of a dry-strength additive. In a second case study, varying wet-end conditions were used on a hybrid former machine to produce four paper reels, with the goal of matching the low linting propensity of the paper produced on a machine with gap former configuration. We found that the retention program, by improving fiber fines retention, substantially reduced the linting propensity of the paper produced on the hybrid former machine. The papers were also printed on a commercial coldset offset press. An excellent correlation was found between the total lint area removed from the bottom side of the paper samples during laboratory printing and lint collected on halftone areas of the first upper printing unit after 45000 copies. Finally, the method was applied to determine the linting propensity of highly filled supercalendered paper produced on a hybrid former machine. In this case, the linting propensity of the bottom side of paper correlated with its ash content.

INFLUENCE OF OFFICE BLEACHING SYSTEMS ON THE RESISTANCE OF HARD TOOTH TISSUES

2020 ◽  
pp. 119-125
Author(s):  
Magsumova O.A. ◽  
Postnikov M.A. ◽  
Ryskina E.A. ◽  
Tkach T.M. ◽  
Polkanova V.A.
Keyword(s):  
Informed Consent ◽  
Oral Fluid ◽  
Personal Data ◽  
Acid Resistance ◽  
Non Invasive ◽  
Hard Tissues ◽  
Voluntary Informed Consent

One of the non-invasive methods for treating discoloration of hard tooth tissues is teeth whitening. The aim of this work is to assess the dynamics of changes in the acid resistance of enamel and hard tissues of teeth and the rate of its remineralization after the procedure of office teeth whitening. The study involved 123 patients aged 18 to 35 years with discoloration of various origins, with the color of hard tooth tissues on the Vita Classic A2 scale and darker. Before performing the office, teeth whitening procedure, all patients gave their written voluntary informed consent to participate in this study, as well as consent to the processing of personal data. Depending on the chosen method of office teeth whitening, patients were divided into 3 groups. The resistance of hard tooth tissues was judged based on the determination of TOER and CASRE tests. These indicators were determined at various times (5 days before the office teeth whitening procedure, 5 days after it, after 14, 30 days and 6 months). Regardless of the chosen whitening system, the office teeth whitening procedure is accompanied by a decrease in the enamel's resistance to acids and a decrease in the rate of its remineralization. The remineralizing function of oral fluid promotes the positive dynamics of the studied parameters after 14 days and after 30 days values increased due to the appointment of remineralizing therapy to all patients in 2 weeks after the teeth whitening procedure. After 6 months, all patients had high enamel resistance and the rate of its remineralization.

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