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https://www.readbyqxmd.com/read/28442198/operational-oil-spill-trajectory-modelling-using-hf-radar-currents-a-northwest-european-continental-shelf-case-study
#1
Ana J Abascal, Jorge Sanchez, Helios Chiri, María I Ferrer, Mar Cárdenas, Alejandro Gallego, Sonia Castanedo, Raúl Medina, Andrés Alonso-Martirena, Barbara Berx, William R Turrell, Sarah L Hughes
This paper presents a novel operational oil spill modelling system based on HF radar currents, implemented in a northwest European shelf sea. The system integrates Open Modal Analysis (OMA), Short Term Prediction algorithms (STPS) and an oil spill model to simulate oil spill trajectories. A set of 18 buoys was used to assess the accuracy of the system for trajectory forecast and to evaluate the benefits of HF radar data compared to the use of currents from a hydrodynamic model (HDM). The results showed that simulated trajectories using OMA currents were more accurate than those obtained using a HDM...
April 22, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28432532/a-portable-battery-powered-microfluidic-impedance-cytometer-with-smartphone-readout-towards-personal-health-monitoring
#2
Niloy Talukder, Abbas Furniturewalla, Tuan Le, Matthew Chan, Shreyas Hirday, Xinnan Cao, Pengfei Xie, Zhongtian Lin, Azam Gholizadeh, Steve Orbine, Mehdi Javanmard
We present a portable system for personalized blood cell counting consisting of a microfluidic impedance cytometer and portable analog readout electronics, feeding into an analog-to-digital converter (ADC), and being transmitted via Bluetooth to a user-accessible mobile application. We fabricated a microfluidic impedance cytometer with a novel portable analog readout. The novel design of the analog readout, which consists of a lock-in-amplifier followed by a high-pass filter stage for subtraction of drift and DC offset, and a post-subtraction high gain stage, enables detection of particles and cells as small as 1 μm in diameter, despite using a low-end 8-bit ADC...
June 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/28416826/-surgical-technique-and-early-clinical-outcomes-of-direct-anterior-approach-to-total-hip-arthroplasty
#3
M Lv, J Q Zhang, X S Wang, Y Huang, W Li, C Y Zhang
OBJECTIVE: To describe the surgical technique of direct anterior approach to total hip arthroplasty and to report the early clinical outcomes. METHODS: A series of 100 consecutive, unselected patients who had 116 primary total hip arthroplasty surgeries (16 bilateral) done through direct anterior approach from March 11 2015 to June 21 2016 was reviewed. There were 50 male patients and 50 female patients. The average patient age was 51 years, and the average body mass index was 24...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28410983/toward-better-public-health-reporting-using-existing-off-the-shelf-approaches-the-value-of-medical-dictionaries-in-automated-cancer-detection-using-plaintext-medical-data
#4
Suranga N Kasthurirathne, Brian E Dixon, Judy Gichoya, Huiping Xu, Yuni Xia, Burke Mamlin, Shaun J Grannis
OBJECTIVES: Existing approaches to derive decision models from plaintext clinical data frequently depend on medical dictionaries as the sources of potential features. Prior research suggests that decision models developed using non-dictionary based feature sourcing approaches and "off the shelf" tools could predict cancer with performance metrics between 80%-90%. We sought to compare non-dictionary based models to models built using features derived from medical dictionaries. MATERIALS AND METHODS: We evaluated the detection of cancer cases from free text pathology reports using decision models built with combinations of dictionary or non-dictionary based feature sourcing approaches, 4 feature subset sizes, and 5 classification algorithms...
April 11, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28406745/measured-carbon-monoxide-concentrations-from-stock-and-reduced-emission-prototype-portable-generators-operated-in-an-attached-garage
#5
S J Emmerich, L Wang, A K Persily
There is concern about the hazard of acute residential CO exposures from portable gasoline powered generators which can result in death or serious adverse health effects in exposed individuals. To address this hazard, the U.S. Consumer Product Safety Commission has developed low CO emission prototype generators by adapting off-the-shelf emission control technologies onto commercially-available generators. A series of tests were conducted to characterize the indoor CO concentrations resulting from portable generators operating in the attached garage of a research house under seven different test house/garage configurations...
April 13, 2017: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/28363964/enhanced-antimicrobial-activity-based-on-a-synergistic-combination-of-sub-lethal-levels-of-stresses-induced-by-uv-a-light-and-organic-acids
#6
Erick F de Oliveira, Andrea Cossu, Rohan V Tikekar, Nitin Nitin
Reduction of microbial load in food and water systems is critical for their safety and shelf-life. Conventionally, physical processes such as heat or light are used for rapid inactivation of microbes, while natural compounds such as lactic acid may be used as preservatives after the initial physical process. This study demonstrates enhanced and rapid inactivation of bacteria based on a synergistic combination of sub-lethal levels of stresses induced by UV-A light and two food grade organic acids. A 4.7 ± 0...
March 31, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28291492/telesurgery-with-miniature-robots-to-leverage-surgical-expertise-in-distributed-expeditionary-environments
#7
Mark Reichenbach, Tom Frederick, Lou Cubrich, Walter Bircher, Nathan Bills, Marsha Morien, Shane Farritor, Dmitry Oleynikov
This study aimed to evaluate the capability of performing telesurgery via radio transmission for military arenas where wired internet connections may not be practical. Most existing robotic surgery systems are too large to effectively deploy with first responders. The miniature surgical platform in this study consists of a multifunctional robot suite that can fit easily into a briefcase. METHODS: The focus of this study is to explore the implications of radio control of the robot. The hypothesis is that an in vivo robot and its control boards can be controlled using off-the-shelf wireless components...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28273618/batch-settling-curve-registration-via-image-data-modeling
#8
Nicolas Derlon, Christian Thürlimann, David Dürrenmatt, Kris Villez
To this day, obtaining reliable characterization of sludge settling properties remains a challenging and time-consuming task. Without such assessments however, optimal design and operation of secondary settling tanks is challenging and conservative approaches will remain necessary. With this study, we show that automated sludge blanket height registration and zone settling velocity estimation is possible thanks to analysis of images taken during batch settling experiments. The experimental setup is particularly interesting for practical applications as it consists of off-the-shelf components only, no moving parts are required, and the software is released publicly...
January 27, 2017: Water Research
https://www.readbyqxmd.com/read/28269421/hardware-design-for-a-cable-free-fully-insertable-wireless-laparoscopic-robotic-camera
#9
Ning Li, Gregory J Mancini, Jindong Tan
The field of insertable laparoscopic robotic camera is gaining increasing attentions from researchers, surgeons, and also patients. Although many insertable laparoscope prototypes have been introduced, few of them get rid of the encumbrance tethering cable. In this paper, we proposed a hardware architecture for a magnetic actuated robotic surgical (MARS) camera, which facilitates a cable-free fully insertable laparoscopic surgical robotic camera with adequate in-vivo mobility. Modular design and preliminary test of on-board functional payloads have shown feasibility of a cable-free insertable wireless laparoscopic surgical camera based on off-the-shelf electronics and industrial wireless standards operating in ISM frequency bands at 2...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268806/mechanism-for-safe-remote-activation-of-networked-surgical-and-poc-devices-using-dynamic-assignable-controls
#10
Martin Kasparick, Max Rockstroh, Stefan Schlichting, Frank Golatowski, Dirk Timmermann
The number of devices within an operating room (OR) increases continuously as well as the complexity of the complete system. One key enabler to handle the complexity is an interoperable and vendor independent system of networked medical devices. To build up such an interoperable system we use the proposed IEEE 11073 SDC standards (IEEE P11073-10207, -20701, -20702) for networked point-of-care (PoC) and surgical devices. One of the major problems within the OR is that typically every device has its own control unit...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28261757/physical-function-quality-of-life-and-energy-expenditure-during-activities-of-daily-living-in-obese-post-bariatric-surgery-and-healthy-subjects
#11
Fabiane Monteiro, Diego A N Ponce, Humberto Silva, Fabio Pitta, Alexandre J F Carrilho
OBJECTIVES: This study aimed to evaluate physical function (PF), quality of life (QOL), and energy expenditure (EE) during activities of daily living (ADL) in late outcome post-bariatric surgery (BS) patients and to compare them to severe obese individuals and matched controls. METHODS: Sixty-three subjects were included: 21 patients in post-operative (PO) of BS (3-4 years post-Roux-en-Y gastric bypass) with a stable weight for at least 6 months (16 women, 41 ± 11 years old, BMI = 28 ± 4 kg m(-2)) (group PO); 21 obese individuals with BS indication (16 women, 44 ± 9 years old, BMI = 44 ± 6 kg m(-2)) (group OB); and 21 controls matched to PO by gender, age, and BMI (16 women, 42 ± 12 years old, BMI = 27 ± 6 kg m(-2)) (group MC)...
March 6, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28258933/contemporary-review-of-grafting-techniques-for-the-surgical-treatment-of-peyronie-s-disease
#12
REVIEW
Georgios Hatzichristodoulou, Daniar Osmonov, Hubert Kübler, Wayne J G Hellstrom, Faysal A Yafi
INTRODUCTION: Peyronie's disease (PD) is a benign fibrotic disorder of the tunica albuginea of the penis, which can cause penile pain, curvature, shortening, erectile dysfunction, and psychological distress. Surgery is indicated when penile curvature prevents satisfactory sexual intercourse. Plaque incision or excision with grafting has been suggested as an option in patients with a penile curvature greater than 60°, a shortened penis, and/or an hourglass or complex deformity. AIM: To provide an overview of recent studies reporting outcomes of grafting techniques and to report advances in the development of new grafting materials for PD surgery...
February 28, 2017: Sexual Medicine Reviews
https://www.readbyqxmd.com/read/28249488/a-cmos-application-specified-integrated-circuit-for-40-ghz-high-electron-mobility-transistors-automatic-biasing
#13
M De Matteis, M De Blasi, E A Vallicelli, M Zannoni, M Gervasi, A Bau, A Passerini, A Baschirotto
This paper presents the design and the experimental results of a CMOS Automatic Control System (ACS) for the biasing of High-Electron-Mobility-Transistors (HEMT). The ACS is the first low-power mixed-signal Application-Specified-Integrated-Circuit (ASIC) able to automatically set and regulate the operating point of an off-chip 6 HEMT Low-Noise-Amplifiers (LNAs), hence it composes a two-chip system (the ACS+LNAs) to be used in the Large Scale Polarization Explorer (LSPE) stratospheric balloon for Cosmic Microwave Background (CMB) signal observation...
February 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28248982/a-dual-pathways-transfer-model-to-account-for-changes-in-the-radioactive-caesium-level-in-demersal-and-pelagic-fish-after-the-fukushima-da%C3%A3-ichi-nuclear-power-plant-accident
#14
Bruno Fiévet, Pascal Bailly-du-Bois, Philippe Laguionie, Mehdi Morillon, Mireille Arnaud, Pascal Cunin
The Fukushima Daï-ichi nuclear power plant (FDNPP) accident resulted in radioactive Cs being discharged into the local marine environment. While Cs bioaccumulates in biota and slowly depurates, the Cs concentrated in biota constitutes a source of Cs for animals feeding on each other. The marine biota therefore serves as a pool that recycles Cs, and this recycling process delays depuration in the fish feeding on this biota pool. Because the continental shelf is squeezed between the coast and very deep sea, the demersal marine species are confined to a narrow strip along the coast, close to the source of the radioactive input...
2017: PloS One
https://www.readbyqxmd.com/read/28227665/hardware-design-for-a-cable-free-fully-insertable-wireless-laparoscopic-robotic-camera
#15
Ning Li, Gregory J Mancini, Jindong Tan, Ning Li, Gregory J Mancini, Jindong Tan, Gregory J Mancini, Ning Li, Jindong Tan
The field of insertable laparoscopic robotic camera is gaining increasing attentions from researchers, surgeons, and also patients. Although many insertable laparoscope prototypes have been introduced, few of them get rid of the encumbrance tethering cable. In this paper, we proposed a hardware architecture for a magnetic actuated robotic surgical (MARS) camera, which facilitates a cable-free fully insertable laparoscopic surgical robotic camera with adequate in-vivo mobility. Modular design and preliminary test of on-board functional payloads have shown feasibility of a cable-free insertable wireless laparoscopic surgical camera based on off-the-shelf electronics and industrial wireless standards operating in ISM frequency bands at 2...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227001/mechanism-for-safe-remote-activation-of-networked-surgical-and-poc-devices-using-dynamic-assignable-controls
#16
Martin Kasparick, Max Rockstroh, Stefan Schlichting, Frank Golatowski, Dirk Timmermann, Martin Kasparick, Max Rockstroh, Stefan Schlichting, Frank Golatowski, Dirk Timmermann, Stefan Schlichting, Martin Kasparick, Max Rockstroh, Frank Golatowski, Dirk Timmermann
The number of devices within an operating room (OR) increases continuously as well as the complexity of the complete system. One key enabler to handle the complexity is an interoperable and vendor independent system of networked medical devices. To build up such an interoperable system we use the proposed IEEE 11073 SDC standards (IEEE P11073-10207, -20701, -20702) for networked point-of-care (PoC) and surgical devices. One of the major problems within the OR is that typically every device has its own control unit...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28221951/time-temperature-profiling-of-united-kingdom-consumers-domestic-refrigerators
#17
Ellen W Evans, Elizabeth C Redmond
Increased consumer demand for convenience and ready-to-eat food, along with changes to consumer food purchase and storage practices, have resulted in an increased reliance on refrigeration to maximize food safety. Previous research suggests that many domestic refrigerators operate at temperatures exceeding recommendations; however, the results of several studies were determined by means of one temperature data point, which, given temperature fluctuation, may not be a true indicator of actual continual operating temperatures...
December 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28199931/a-personalized-3d-printed-prosthetic-joint-replacement-for-the-human-temporomandibular-joint-from-implant-design-to-implantation
#18
David C Ackland, Dale Robinson, Michael Redhead, Peter Vee Sin Lee, Adrian Moskaljuk, George Dimitroulis
Personalized prosthetic joint replacements have important applications in cases of complex bone and joint conditions where the shape and size of off-the-shelf components may not be adequate. The objective of this study was to design, test and fabricate a personalized 3D-printed prosthesis for a patient requiring total joint replacement surgery of the temporomandibular joint (TMJ). The new 'Melbourne' prosthetic TMJ design featured a condylar component sized specifically to the patient and fixation screw positions that avoid potential intra-operative damage to the mandibular nerve...
February 6, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28161566/monocentric-evaluation-of-chimney-versus-fenestrated-endovascular-aortic-repair-for-juxtarenal-abdominal-aortic-aneurysm
#19
Caroline Caradu, Julien Morin, Mathieu Poirier, Dominique Midy, Eric Ducasse
BACKGROUND: With approval of on-label fenestrated (F-) endovascular aortic repair (EVAR), concerns regarding long-term patency and endoleaks (ELs) after chimney graft (CG)-EVAR were raised. To add supportive data on the value of this technique, we chose to report the midterm results of CG-EVAR in a single center with standardized methods and to compare them to F-EVAR. METHODS: A retrospective analysis of prospectively gathered data from January 2010 to January 2015 was conducted, and patients with excessive comorbidities for open repair treated by CG-EVAR or F-EVAR were included...
February 2, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28150700/isfet-ph-sensitivity-counter-ions-play-a-key-role
#20
Kokab B Parizi, Xiaoqing Xu, Ashish Pal, Xiaolin Hu, H S Philip Wong
The Field Effect sensors are broadly used for detecting various target analytes in chemical and biological solutions. We report the conditions under which the pH sensitivity of an Ion Sensitive Field Effect transistor (ISFET) sensor can be significantly enhanced. Our theory and simulations show that by using pH buffer solutions containing counter-ions that are beyond a specific size, the sensor shows significantly higher sensitivity which can exceed the Nernst limit. We validate the theory by measuring the pH response of an extended gate ISFET pH sensor...
February 2, 2017: Scientific Reports
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