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https://www.readbyqxmd.com/read/29315850/inductor-free-wireless-energy-delivery-via-maxwell-s-displacement-current-from-an-electrodeless-triboelectric-nanogenerator
#1
Xia Cao, Meng Zhang, Jinrong Huang, Tao Jiang, Jingdian Zou, Ning Wang, Zhong Lin Wang
Wireless power delivery has been a dream technology for applications in medical science, security, radio frequency identification (RFID), and the internet of things, and is usually based on induction coils and/or antenna. Here, a new approach is demonstrated for wireless power delivery by using the Maxwell's displacement current generated by an electrodeless triboelectric nanogenerator (TENG) that directly harvests ambient mechanical energy. A rotary electrodeless TENG is fabricated using the contact and sliding mode with a segmented structure...
January 5, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29311598/graphene-oxide-dielectric-permittivity-at-ghz-and-its-applications-for-wireless-humidity-sensing
#2
Xianjun Huang, Ting Leng, Thanasis Georgiou, Jijo Abraham, Rahul Raveendran Nair, Kostya S Novoselov, Zhirun Hu
In this work, the relative dielectric permittivity of graphene oxide (GO), both its real and imaginary parts, have been measured under various humidity conditions at GHz. It is demonstrated that the relative dielectric permittivity increases with increasing humidity due to water uptake. This finding is very different to that at a couple of MHz or lower frequency, where the relative dielectric permittivity increases with decreasing humidity. This GO electrical property was used to create a battery-free wireless radio-frequency identification (RFID) humidity sensor by coating printed graphene antenna with the GO layer...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29278901/assessing-the-use-of-radio-frequency-identification-technologies-as-an-alternative-for-insurance-costs-in-hospitals
#3
Iraj Asgharzadeh-Karamshahloo, Armin Jabbarzadeh, Saeed Shavvalpour
OBJECTIVES: This research assesses the use of Radio Frequency Identification (RFID) technologies as an alternative for insurance costs in hospitals. METHODS: Despite the advantages of RFID, this technology has not been applied in most hospitals due to implementation costs and amortization of RFID. In this paper, we intend to model the total profit of hospitals in three scenarios namely, application of RFID technology in the hospital, without applying RFID technology in the hospital and insuring patients and equipment in the hospital...
December 15, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/29275252/emission-factors-of-volatile-organic-compounds-vocs-based-on-the-detailed-vehicle-classification-in-a-tunnel-study
#4
Qijun Zhang, Lin Wu, Xiaozhen Fang, Mingyue Liu, Jing Zhang, Min Shao, Sihua Lu, Hongjun Mao
In order to obtain VOCs emission characteristics and emission factors from vehicle, a tunnel experiment was conducted in the Fu Gui Mountain Tunnel in Nanjing, China. The tunnel is located in the middle of city, with total length of 480m and speed limit of 50km/h. The studied vehicle fleet was composed of 87% light duty vehicles and 13% heavy duty vehicles (liquefied natural gas bus, LNGB). The emerging radio frequency identification (RFID) technology was used to divide fine vehicles type including China I, China II, China III, China IV, China V and LNGB...
December 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29242117/design-implementation-and-evaluation-of-an-internet-of-things-iot-network-system-for-restaurant-food-waste-management
#5
Zongguo Wen, Shuhan Hu, Djavan De Clercq, M Bruce Beck, Hua Zhang, Huanan Zhang, Fan Fei, Jianguo Liu
Catering companies around the world generate tremendous amounts of waste; those in China are no exception. The paper discusses the design, implementation, and evaluation of a sensor-based Internet of Things (IoT) network technology for improving the management of restaurant food waste (RFW) in the city of Suzhou, China. This IoT-based system encompasses the generation, collection, transportation and final disposal of RFW. The Suzhou case study comprised four steps: (1) examination of the required functionality of an IoT-enabled system in the specific context of Suzhou; (2) configuration of the system architecture, both software and hardware components, according to the identified functionality; (3) installation of the components of the IoT system at the facilities of the stakeholders across the RFW generation-collection-transportation-disposal value chain; and (4) evaluation of the performance of the entire system, based on data from three years of operation...
December 11, 2017: Waste Management
https://www.readbyqxmd.com/read/29232901/a-novel-passive-wireless-sensing-method-for-concrete-chloride-ion-concentration-monitoring
#6
Shuangxi Zhou, Wei Sheng, Fangming Deng, Xiang Wu, Zhihui Fu
In this paper, a novel approach for concrete chloride ion concentration measuring based on passive and wireless sensor tag is proposed. The chloride ion sensor based on RFID communication protocol is consisting of an energy harvesting and management circuit, a low dropout voltage regulator, a MCU, a RFID tag chip and a pair of electrodes. The proposed sensor harvests energy radiated by the RFID reader to power its circuitry. To improve the stability of power supply, a three-stage boost rectifier is customized to rectify the harvested power into dc power and step-up the voltage...
December 11, 2017: Sensors
https://www.readbyqxmd.com/read/29210411/graphene-integrated-circuits-new-prospects-towards-receiver-realisation
#7
Mohamed Saeed, Ahmed Hamed, Zhenxing Wang, Mehrdad Shaygan, Daniel Neumaier, Renato Negra
This work demonstrates a design approach which enables the fabrication of fully integrated radio frequency (RF) and millimetre-wave frequency direct-conversion graphene receivers by adapting the frontend architecture to exploit the state-of-the-art performance of the recently reported wafer-scale CVD metal-insulator-graphene (MIG) diodes. As a proof-of-concept, we built a fully integrated microwave receiver in the frequency range 2.1-2.7 GHz employing the strong nonlinearity and the high responsivity of MIG diodes to successfully receive and demodulate complex, digitally modulated communication signals at 2...
December 21, 2017: Nanoscale
https://www.readbyqxmd.com/read/29193095/real-time-detection-system-for-tumor-localization-during-minimally-invasive-surgery-for-gastric-and-colon-cancer-removal-in-vivo-feasibility-study-in-a-swine-model
#8
Won Jung Choi, Jin-Hee Moon, Jae Seok Min, Yong Keun Song, Seung A Lee, Jin Woo Ahn, Sang Hun Lee, Ha Chul Jung
BACKGROUND AND OBJECTIVES: During minimally invasive surgery (MIS), it is impossible to directly detect marked clips around tumors via palpation. Therefore, we developed a novel method and device using Radio Frequency IDentification (RFID) technology to detect the position of clips during minimally invasive gastrectomy or colectomy. METHODS: The feasibility of the RFID-based detection system was evaluated in an animal experiment consisting of seven swine. The primary outcome was to successfully detect the location of RFID clips in the stomach and colon...
November 28, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29171038/effects-of-exposure-to-electromagnetic-field-from-915%C3%A2-mhz-radiofrequency-identification-system-on-circulating-blood-cells-in-the-healthy-adult-rat
#9
Hye Sun Kim, Jae Sung Park, Yeung-Bae Jin, Hyung Do Choi, Jong Hwa Kwon, Jeong-Ki Pack, Nam Kim, Young Hwan Ahn
We investigated whether exposure to the 915 MHz radiofrequency identification (RFID) signal affected circulating blood cells in rats. Sprague-Dawley rats were exposed to RFID at a whole-body specific absorption rate of 2 W/kg for 8 h per day, 5 days per week, for 2 weeks. Complete blood counts were performed after RFID exposure, and the CD4(+) /CD8(+) ratio was determined by flow cytometry. The number of red blood cells (RBCs) and the values of hemoglobin, hematocrit, and RBC indices were increased in the RFID-exposed group compared with those in the cage-control and sham-exposed groups (P < 0...
November 24, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/29070625/individualized-tracking-of-self-directed-motor-learning-in-group-housed-mice-performing-a-skilled-lever-positioning-task-in-the-home-cage
#10
Gergely Silasi, Jamie Boyd, Federico Bolanos, Jeff LeDue, Stephen H Scott, Timothy H Murphy
Skilled forelimb function in mice is traditionally studied through behavioural paradigms that require extensive training by investigators, and are limited by the number of trials individual animals are able to perform within supervised session. We developed a skilled lever positioning task that mice can perform within their home cage. The task requires mice to use their forelimb to precisely hold a lever mounted on a rotary encoder within a rewarded position in order to dispense a water reward. A Raspberry Pi microcomputer is used to record lever position during trials, and to control task parameters, thus making this low-footprint apparatus ideal for use within animal housing facilities...
October 25, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29060952/an-intelligent-iot-emergency-vehicle-warning-system-using-rfid-and-wifi-technologies-for-emergency-medical-services
#11
Yeong-Lin Lai, Yung-Hua Chou, Li-Chih Chang
BACKGROUND: Collisions between emergency vehicles for emergency medical services (EMS) and public road users have been a serious problem, impacting on the safety of road users, emergency medical technicians (EMTs), and the patients on board. OBJECTIVE: The aim of this study is to develop a novel intelligent emergency vehicle warning system for EMS applications. METHODS: The intelligent emergency vehicle warning system is developed by Internet of Things (IoT), radio-frequency identification (RFID), and WiFi technologies...
October 13, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/29060949/a-passive-rfid-based-location-system-for-personnel-and-asset-monitoring
#12
Rong-Shue Hsiao, Chun-Hao Kao, Tian-Xiang Chen, Jui-Lun Chen
BACKGROUND: Typical radio frequency identification (RFID) access control system can be ineffective if an unauthorized person tailgates an authorized person through an access area. OBJECTIVE: To propose a system by using indoor locating and tracking techniques address this problem, which is to prevent unauthorized Alzheimer's and dementia patients from getting lost including by tailgating. METHODS: To achieve accurate target location, passive RFID deployment strategy is studied and a fingerprinting based passive RFID localization algorithm is proposed...
October 13, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/29060802/ratt-rfid-assisted-tracking-tile-preliminary-results
#13
Dario R Quinones, Aaron Cuevas, Javier Cambra, Santiago Canals, David Moratal
Behavior is one of the most important aspects of animal life. This behavior depends on the link between animals, their nervous systems and their environment. In order to study the behavior of laboratory animals several tools are needed, but a tracking tool is essential to perform a thorough behavioral study. Currently, several visual tracking tools are available. However, they have some drawbacks. For instance, when an animal is inside a cave, or is close to other animals, the tracking cameras cannot always detect the location or movement of this animal...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29043042/feedr-and-animalnexus-ca-a-paired-r-package-and-user-friendly-web-application-for-transforming-and-visualizing-animal-movement-data-from-static-stations
#14
Stefanie E LaZerte, Matthew W Reudink, Ken A Otter, Jackson Kusack, Jacob M Bailey, Austin Woolverton, Mark Paetkau, Adriaan de Jong, David J Hill
Radio frequency identification (RFID) provides a simple and inexpensive approach for examining the movements of tagged animals, which can provide information on species behavior and ecology, such as habitat/resource use and social interactions. In addition, tracking animal movements is appealing to naturalists, citizen scientists, and the general public and thus represents a tool for public engagement in science and science education. Although a useful tool, the large amount of data collected using RFID may quickly become overwhelming...
October 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29016696/a-battery-less-and-wireless-wearable-sensor-system-for-identifying-bed-and-chair-exits-in-a-pilot-trial-in-hospitalized-older-people
#15
Roberto L Shinmoto Torres, Renuka Visvanathan, Derek Abbott, Keith D Hill, Damith C Ranasinghe
Falls in hospitals are common, therefore strategies to minimize the impact of these events in older patients and needs to be examined. In this pilot study, we investigate a movement monitoring sensor system for identifying bed and chair exits using a wireless wearable sensor worn by hospitalized older patients. We developed a movement monitoring sensor system that recognizes bed and chair exits. The system consists of a machine learning based activity classifier and a bed and chair exit recognition process based on an activity score function...
2017: PloS One
https://www.readbyqxmd.com/read/28994412/towards-a-compact-and-precise-sample-holder-for-macromolecular-crystallography
#16
Gergely Papp, Christopher Rossi, Robert Janocha, Clement Sorez, Marcos Lopez-Marrero, Anthony Astruc, Andrew McCarthy, Hassan Belrhali, Matthew W Bowler, Florent Cipriani
Most of the sample holders currently used in macromolecular crystallography offer limited storage density and poor initial crystal-positioning precision upon mounting on a goniometer. This has now become a limiting factor at high-throughput beamlines, where data collection can be performed in a matter of seconds. Furthermore, this lack of precision limits the potential benefits emerging from automated harvesting systems that could provide crystal-position information which would further enhance alignment at beamlines...
October 1, 2017: Acta Crystallographica. Section D, Structural Biology
https://www.readbyqxmd.com/read/28961207/the-development-of-an-rfid-solution-to-facilitate-the-traceability-of-patient-and-pharmaceutical-data
#17
María Martínez Pérez, Guillermo Vázquez González, Carlos Dafonte
One of the principal objectives of hospitals is to increase the quality of care of the patient. This is even more of a priority in Day Hospitals where certain medication requires special attention, from its preparation in the Pharmacy service to its delivery to the patient in the Day Hospital. In the case of expensive medicines, nursing staff have to comply with very detailed instructions in their administration to the patient (name of medicine, route, dosage, schedule, previous medication, conditions of conservation, etc...
September 29, 2017: Sensors
https://www.readbyqxmd.com/read/28894980/short-communication-using-infrared-thermography-as-an-in-situ-measure-of-core-body-temperature-in-lot-fed-angus-steers
#18
Angela M Lees, J C Lees, V Sejian, A L Wallage, J B Gaughan
Thirty-six Black Angus steers were used in a replicated study; three replicates of 12 steers/replicate. Steers had an initial non-fasted BW of 392.3 ± 5.1, 427.5 ± 6.3, and 392.7 ± 3.7 kg for each replicate, respectively. Steers were housed outside in individual animal pens (10 m × 3.4 m). Each replicate was conducted over a 6-day period where infrared thermography (IRT) images were collected at 3-h intervals, commencing at 0600 h on day 1 and concluding at 0600 h on day 6. Rumen temperatures (T RUM) were measured at 10-min intervals for the duration of each replicate using a radio-frequency identification (RFID) rumen bolus...
September 11, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28877172/automated-recording-of-home-cage-activity-and-temperature-of-individual-rats-housed-in-social-groups-the-rodent-big-brother-project
#19
William S Redfern, Karen Tse, Claire Grant, Amy Keerie, David J Simpson, John C Pedersen, Victoria Rimmer, Lauren Leslie, Stephanie K Klein, Natasha A Karp, Rowland Sillito, Agis Chartsias, Tim Lukins, James Heward, Catherine Vickers, Kathryn Chapman, J Douglas Armstrong
Measuring the activity and temperature of rats is commonly required in biomedical research. Conventional approaches necessitate single housing, which affects their behavior and wellbeing. We have used a subcutaneous radiofrequency identification (RFID) transponder to measure ambulatory activity and temperature of individual rats when group-housed in conventional, rack-mounted home cages. The transponder location and temperature is detected by a matrix of antennae in a baseplate under the cage. An infrared high-definition camera acquires side-view video of the cage and also enables automated detection of vertical activity...
2017: PloS One
https://www.readbyqxmd.com/read/28829650/user-acceptance-factors-of-hospital-information-systems-and-related-technologies-systematic-review
#20
Putu Wuri Handayani, Achmad Nizar Hidayanto, Indra Budi
This study reviews the literature on the most important acceptance factors associated with Hospital Information Systems (HIS) and related technologies based on user groups' perspectives (medical staff, hospital management, administrative personnel, patient, medical student, and IT staff), which can assist researchers and hospital management to develop suitable acceptance models to improve the quality of HIS. We conducted searches in online databases with large repositories of academic studies, written in English and fully accessible by the authors...
August 22, 2017: Informatics for Health & Social Care
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