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https://www.readbyqxmd.com/read/28230572/automated-bone-screw-tightening-to-adaptive-levels-of-stripping-torque
#1
Karen J Reynolds, Aaron A Mohtar, Tammy M Cleek, Melissa K Ryan, Trevor C Hearn
OBJECTIVE: To use relationships between tightening parameters, related to bone quality, to develop an automated system that determines and controls the level of screw tightening. METHODS: An algorithm relating current at head contact (IHC) to current at construct failure (Imax) was developed. The algorithm was used to trigger cessation of screw insertion at a pre-defined tightening level, in real time, between head contact and maximum current. The ability of the device to stop at the pre-defined level was assessed...
February 20, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28230153/unconventional-high-performance-laser-protection-system-based-on-dichroic-dye-doped-cholesteric-liquid-crystals
#2
Wanshu Zhang, Lanying Zhang, Xiao Liang, Le Zhou, Jiumei Xiao, Li Yu, Fasheng Li, Hui Cao, Kexuan Li, Zhou Yang, Huai Yang
High-performance and cost-effective laser protection system is of crucial importance for the rapid advance of lasers in military and civilian fields leading to severe damages of human eyes and sensitive optical devices. However, it is crucially hindered by the angle-dependent protective effect and the complex preparation process. Here we demonstrate that angle-independence, good processibility, wavelength tunability, high optical density and good visibility can be effectuated simultaneously, by embedding dichroic anthraquinone dyes in a cholesteric liquid crystal matrix...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28227952/smartstuff-a-case-study-of-a-smart-water-bottle
#3
Emil Jovanov, Vindhya R Nallathimmareddygari, Jonathan E Pryor, Emil Jovanov, Vindhya R Nallathimmareddygari, Jonathan E Pryor, Vindhya R Nallathimmareddygari, Emil Jovanov, Jonathan E Pryor
The rapid growth of Internet of Things (IoT) and miniature wearable biosensors have generated new opportunities for personalized eHealth and mHealth services. Smart objects equipped with physiological sensors can provide robust monitoring of activities of daily living and context for wearable physiological sensors. We present a case study of an intelligent water bottle that can precisely measure the amount of liquid in the bottle, monitor activity using inertial sensors, and physiological parameters using a touch and photoplethysmographic sensor...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227817/polyimide-based-magnetic-microactuators-for-biofouling-removal
#4
Qi Yang, Tran Nguyen, Chunan Liu, Jacob Miller, Jeffrey F Rhoads, Jacqueline Linnes, Hyowon Lee, Qi Yang, Tran Nguyen, Chunan Liu, Jacob Miller, Jeffrey F Rhoads, Jacqueline Linnes, Hyowon Lee, Jacqueline Linnes, Chunan Liu, Tran Nguyen, Jacob Miller, Jeffrey F Rhoads, Hyowon Lee, Qi Yang
Here we report on the development of novel polyimide-based flexible magnetic actuators for improving hydrocephalus shunts. The static and dynamic mechanical responses of the thin-film magnetic microdevices were quantitatively measured. The bacteria-removing capabilities of the microfabricated devices were also evaluated. Although additional evaluations are necessary, the preliminary results show promising potential for combatting bacteria-induced biofouling. Lastly, the thin-film microdevices are integrated into a single-pore silicone catheter to demonstrate a proof-of-concept, MEMS-enabled self-clearing, smart catheter...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227705/an-affordable-cuff-less-blood-pressure-estimation-solution
#5
Monika Jain, Niranjan Kumar, Sujay Deb, Monika Jain, Niranjan Kumar, Sujay Deb, Monika Jain, Sujay Deb, Niranjan Kumar
This paper presents a cuff-less hypertension pre-screening device that non-invasively monitors the Blood Pressure (BP) and Heart Rate (HR) continuously. The proposed device simultaneously records two clinically significant and highly correlated biomedical signals, viz., Electrocardiogram (ECG) and Photoplethysmogram (PPG). The device provides a common data acquisition platform that can interface with PC/laptop, Smart phone/tablet and Raspberry-pi etc. The hardware stores and processes the recorded ECG and PPG in order to extract the real-time BP and HR using kernel regression approach...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227626/design-and-prototyping-of-a-wristband-type-wireless-photoplethysmographic-device-for-heart-rate-variability-signal-analysis
#6
M Ghamari, C Soltanpur, S Cabrera, R Romero, R Martinek, H Nazeran, M Ghamari, C Soltanpur, S Cabrera, R Romero, R Martinek, H Nazeran, R Martinek, R Romero, C Soltanpur, S Cabrera, M Ghamari
Heart Rate Variability (HRV) signal analysis provides a quantitative marker of the Autonomic Nervous System (ANS) function. A wristband-type wireless photoplethysmographic (PPG) device was custom-designed to collect and analyze the arterial pulse in the wrist. The proposed device is comprised of an optical sensor to monitor arterial pulse, a signal conditioning unit to filter and amplify the analog PPG signal, a microcontroller to digitize the analog PPG signal, and a Bluetooth module to transfer the data to a smart device...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227590/elastic-ribbon-like-piezoelectric-energy-harvester-for-wearable-devices-with-stretchable-surfaces
#7
You Liang Lionel, Wong, Gary K Fedder, You Liang Lionel, Wong, Gary K Fedder
This paper presents an elastic ribbon-like piezoelectric energy harvester which is targeted for skin-wearable devices by harnessing the movements of stretchable surfaces. The device aims to power up smart thin stick-on devices for healthcare monitoring. By embedding a ribbon-like PVDF film in a flexible elastomer, Ecoflex, the device is potentially able to stretch 34%, while maintaining internal strain of the film below its plastic deformation limit. Alternate electrode layout and bimorph configuration help to reduce charge cancellation, while increasing overall effectiveness...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227589/uhf-wearable-battery-free-sensor-module-for-activity-and-falling-detection
#8
Nam Trung Dang, Thang Viet Tran, Wan-Young Chung, Nam Trung Dang, Thang Viet Tran, Wan-Young Chung, Thang Viet Tran, Wan-Young Chung, Nam Trung Dang
Falling is one of the most serious medical and social problems in aging population. Therefore taking care of the elderly by detecting activity and falling for preventing and mitigating the injuries caused by falls needs to be concerned. This study proposes a wearable, wireless, battery free ultra-high frequency (UHF) smart sensor tag module for falling and activity detection. The proposed tag is powered by UHF RF wave from reader and read by a standard UHF Electronic Product Code (EPC) Class-1 Generation-2 reader...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227572/real-time-monitoring-of-swimming-performance
#9
R Delgado-Gonzalo, A Lemkaddem, Ph Renevey, E Muntane Calvo, M Lemay, K Cox, D Ashby, J Willardson, M Bertschi, R Delgado-Gonzalo, A Lemkaddem, Ph Renevey, E Muntane Calvo, M Lemay, K Cox, D Ashby, J Willardson, M Bertschi, M Lemay, A Lemkaddem, Ph Renevey, D Ashby, M Bertschi, E Muntane Calvo, J Willardson, R Delgado-Gonzalo, K Cox
This article presents the performance results of a novel algorithm for swimming analysis in real-time within a low-power wrist-worn device. The estimated parameters are: lap count, stroke count, time in lap, total swimming time, pace/speed per lap, total swam distance, and swimming efficiency (SWOLF). In addition, several swimming styles are automatically detected. Results were obtained using a database composed of 13 different swimmers spanning 646 laps and 858.78 min of total swam time. The final precision achieved in lap detection ranges between 99...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227147/blood-glucose-level-prediction-based-on-support-vector-regression-using-mobile-platforms
#10
Maximilian P Reymann, Eva Dorschky, Benjamin H Groh, Christine Martindale, Peter Blank, Bjoern M Eskofier, Maximilian P Reymann, Eva Dorschky, Benjamin H Groh, Christine Martindale, Peter Blank, Bjoern M Eskofier
The correct treatment of diabetes is vital to a patient's health: Staying within defined blood glucose levels prevents dangerous short- and long-term effects on the body. Mobile devices informing patients about their future blood glucose levels could enable them to take counter-measures to prevent hypo or hyper periods. Previous work addressed this challenge by predicting the blood glucose levels using regression models. However, these approaches required a physiological model, representing the human body's response to insulin and glucose intake, or are not directly applicable to mobile platforms (smart phones, tablets)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227038/secure-access-to-patient-s-health-records-using-speechxrays-a-mutli-channel-biometrics-platform-for-user-authentication
#11
Emmanouil G Spanakis, Marios Spanakis, Apostolos Karantanas, Kostas Marias, Emmanouil G Spanakis, Marios Spanakis, Apostolos Karantanas, Kostas Marias, Emmanouil G Spanakis, Apostolos Karantanas, Marios Spanakis, Kostas Marias
The most commonly used method for user authentication in ICT services or systems is the application of identification tools such as passwords or personal identification numbers (PINs). The rapid development in ICT technology regarding smart devices (laptops, tablets and smartphones) has allowed also the advance of hardware components that capture several biometric traits such as fingerprints and voice. These components are aiming among others to overcome weaknesses and flaws of password usage under the prism of improved user authentication with higher level of security, privacy and usability...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227022/seasonal-weight-variation-patterns-in-seven-countries-located-in-northern-and-southern-hemispheres
#12
Saeed Mehrang, Elina Helander, Angela Chieh, Ilkka Korhonen, Saeed Mehrang, Elina Helander, Angela Chieh, Ilkka Korhonen, Ilkka Korhonen, Saeed Mehrang, Elina Helander, Angela Chieh
The digital revolution of information and technology in late 20th century has led to emergence of devices that help people monitor their weight in a long-term manner. Investigation of population-level variations of body mass using smart connected weight scales enabled the health coaches acquire deeper insights about the models of people's behavior as a function of time. Typically, body mass varies when the seasons change. That is, during the warmer seasons people's body mass tend to decrease while in colder seasons it usually moves up...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226975/portable-forced-oscillation-device-for-point-of-care-pulmonary-function-testing
#13
Jian Cao, Ashutosh Sabharwal, Jian Cao, Ashutosh Sabharwal, Jian Cao, Ashutosh Sabharwal
The forced oscillation technique (FOT) provides a simple and accurate approach for pulmonary function testing. However, most current devices are large and high cost, hence the test remains sparingly used. To address this problem, we verified the feasibility of a smart and portable forced oscillation device based on a small subwoofer and ultrasonic sensor that is targeted at point-of-care pulmonary function testing. In this paper, we first develop and optimize the signal processing algorithm for impedance estimation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226547/portable-electrocardiogram-device-using-android-smartphone
#14
S G E Brucal, G K D Clamor, L A O Pasiliao, J P F Soriano, L P M Varilla, S G E Brucal, G K D Clamor, L A O Pasiliao, J P F Soriano, L P M Varilla, J P F Soriano, L P M Varilla, S G E Brucal, L A O Pasiliao, G K D Clamor
Portable electrocardiogram (ECG) capturing device can be interfaced to a smart phone installed with an android-based application (app). This app processes and analyses the data sent by the device to provide an interpretation of the patient/user's heart current condition (e.g.: beats per minute, heart signal waveform, R-R interval). The ECG recorded by the app is stored in the smart phone's Secure Digital (SD) card and cloud storage which can be accessed remotely by a physician to aid in providing medical diagnosis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225595/colorimetric-and-electrochemical-bacteria-detection-using-printed-paper-and-transparency-based-analytic-devices
#15
Jaclyn A Adkins, Katherine Boehle, Colin Friend, Briana Chamberlain, Bledar Bisha, Charles S Henry
The development of transparency-based electrochemical and paper-based colorimetric analytic detection platforms is presented as complimentary methods for food and waterborne bacteria detection from a single assay. Escherichia coli and Enterococcus species, both indicators of fecal contamination, were detected using substrates specific to enzymes produced by each species. β-galactosidase (β-gal) and β-glucosidase (β-gluco) are both produced by E. coli, while β-glucosidase (β-gluco) is produced by Enterococcus spp...
February 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28225441/big-data-more-than-just-big-and-more-than-just-data
#16
Gregory A Spencer
According to an report, 90 percent of the data in the world today were created in the past two years. This statistic is not surprising given the explosion of mobile phones and other devices that generate data, the Internet of Things (e.g., smart refrigerators), and metadata (data about data). While it might be a stretch to figure out how a healthcare organization can use data generated from an ice maker, data from a plethora of rich and useful sources, when combined with an organization's own data, can produce improved results...
January 2017: Frontiers of Health Services Management
https://www.readbyqxmd.com/read/28225213/a-dual-organic-transistor-based-tactile-perception-system-with-signal-processing-functionality
#17
Yaping Zang, Hongguang Shen, Dazhen Huang, Chong-An Di, Daoben Zhu
Organic-device-based tactile-perception systems can open up new opportunities for the next generation of intelligent products. To meet the critical requirements of artificial perception systems, the efficient construction of organic smart elements with integrated sensing and signal processing functionalities is highly desired, but remains a challenge. This study presents a dual-organic-transistor-based tactile-perception element (DOT-TPE) with biomimetic functionality by the construction of organic synaptic transistors with integrated sensing transistors...
February 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28224757/dna-smart-biopatterned-polymer-film-microchannels-for-selective-immobilization-of-proteins-and-cells
#18
Ann-Kathrin Schneider, Pavel M Nikolov, Stefan Giselbrecht, Christof M Niemeyer
A novel SMART module, dubbed "DNA-SMART" (DNA substrate modification and replication by thermoforming) is reported, where polymer films are premodified with single-stranded DNA capture strands, microthermoformed into 3D structures, and postmodified with complementary DNA-protein conjugates to realize complex biologically active surfaces within microfluidic devices. As a proof of feasibility, it is demonstrated that microchannels presenting three different proteins on their inner curvilinear surface can be used for selective capture of cells under flow conditions...
February 22, 2017: Small
https://www.readbyqxmd.com/read/28222264/graphene-ink-laminate-structures-on-polyvinylidene-difluoride-pvdf-for-pyroelectric-thermal-energy-harvesting-and-waste-heat-recovery
#19
Daniel Zabek, Kris Seunarine, Chris Spacie, Chris R Bowen
Thermal energy can be effectively converted into electricity using pyroelectrics, which act as small scale power generator and energy harvesters providing nW to mW of electrical power. In this paper, a novel pyroelectric harvester based on free standing polyvinilidene difluoride (PVDF) was manufactured that exploits the high thermal radiation absorbance of a screen printed graphene-ink electrode structure to facilitate the conversion of the available thermal radiation energy into electrical energy. The interconnected graphene nanoplatelets (GNPs) enable high thermal radiation absorbance and high electrical conductivity along with the ease of deposition using a screen print technique...
February 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28221015/taking-orders-from-light-photo-switchable-working-inactive-smart-surfaces-for-protein-and-cell-adhesion
#20
Junji Zhang, Wenjing Ma, Xiao-Peng He, He Tian
Photo-responsive smart surfaces are promising candidates for a variety of applications in optoelectronics and sensing devices. The use of light as an order-signal provides advantages of remote and non-invasive control with high temporal and spatial resolutions. Modification of the photo-switches with target bio-macromolecules, such as peptides, DNA and small-molecules including folic acid derivatives and sugars, has recently become a popular strategy to empower the smart surfaces with an improved detection efficiency and specificity...
February 21, 2017: ACS Applied Materials & Interfaces
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