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https://www.readbyqxmd.com/read/28906555/application-of-power-ultrasound-on-the-convective-drying-of-fruits-and-vegetables-effects-on-quality
#1
REVIEW
Óscar Rodríguez, Valeria Eim, Carmen Rosselló, Antoni Femenia, Juan A Cárcel, Susana Simal
Drying allows the obtaining of products with a long shelf life by reducing the water activity to a level low enough for the growth of microorganisms, enzymatic reactions, and other deteriorative reactions to be inhibited. Despite the benefits of this operation, the quality of heat sensitive products is diminished when high temperatures are used. The use of low drying temperatures reduces the heat damage but being the drying time longer, oxidation reactions occur and a reduction of the quality is also observed...
September 14, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28891686/innovative-processes-and-technologies-for-modified-atmosphere-packaging-of-fresh-and-fresh-cut-fruits-and-vegetables-a-review
#2
Matthew Deas Wilson, Roger A Stanley, Alieta Eyles, Tom Ross
Modified atmosphere packaging (MAP) technology has been commercially viable since the 1970s. Currently, MAP is extensively used worldwide to preserve the quality and extend the shelf-life of whole fresh fruits and vegetables, but is also increasingly used to extend the shelf-life of minimally processed fresh fruit and vegetables. This review discusses new processes and technologies that can be used to improve quality preservation and consumer acceptability of minimally processed produce where high respiration rates and challenging degradation processes operate...
September 11, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/28873392/an-operational-approach-to-high-resolution-agro-ecological-zoning-in-west-africa
#3
Y Le Page, Maria Vasconcelos, A Palminha, I Q Melo, J M C Pereira
The objective of this work is to develop a simple methodology for high resolution crop suitability analysis under current and future climate, easily applicable and useful in Least Developed Countries. The approach addresses both regional planning in the context of climate change projections and pre-emptive short-term rural extension interventions based on same-year agricultural season forecasts, while implemented with off-the-shelf resources. The developed tools are applied operationally in a case-study developed in three regions of Guinea-Bissau and the obtained results, as well as the advantages and limitations of methods applied, are discussed...
2017: PloS One
https://www.readbyqxmd.com/read/28863691/tinylev-a-multi-emitter-single-axis-acoustic-levitator
#4
Asier Marzo, Adrian Barnes, Bruce W Drinkwater
Acoustic levitation has the potential to enable novel studies due to its ability to hold a wide variety of substances against gravity under container-less conditions. It has found application in spectroscopy, chemistry, and the study of organisms in microgravity. Current levitators are constructed using Langevin horns that need to be manufactured to high tolerance with carefully matched resonant frequencies. This resonance condition is hard to maintain as their temperature changes due to transduction heating...
August 2017: Review of Scientific Instruments
https://www.readbyqxmd.com/read/28841144/radiation-induced-attenuation-of-perfluorinated-polymer-optical-fibers-for-radiation-monitoring
#5
Pavol Stajanca, Katerina Krebber
Due to some of their unique properties, optical fiber dosimeters are attractive and extensively researched devices in several radiation-related areas. This work evaluates the performance and potential of commercial perfluorinated polymer optical fibers (PF-POFs) for radiation monitoring applications. Gamma radiation-induced attenuation (RIA) of two commercial PF-POFs is evaluated in the VIS spectral region. Influence of a dose rate and temperature on RIA measurement is investigated, along with defect stability and measurement repeatability...
August 25, 2017: Sensors
https://www.readbyqxmd.com/read/28828144/assessment-of-radiometer-calibration-with-gps-radio-occultation-for-the-mirata-cubesat-mission
#6
Anne D Marinan, Kerri L Cahoy, Rebecca L Bishop, Susan S Lui, James R Bardeen, Tamitha Mulligan, William J Blackwell, R Vincent Leslie, Idahosa Osaretin, Michael Shields
The Microwave Radiometer Technology Acceleration (MiRaTA) is a 3U CubeSat mission sponsored by the NASA Earth Science Technology Office (ESTO). The science payload on MiRaTA consists of a tri-band microwave radiometer and Global Positioning System (GPS) radio occultation (GPSRO) sensor. The microwave radiometer takes measurements of all-weather temperature (V-band, 50-57 GHz), water vapor (G-band, 175-191 GHz), and cloud ice (G-band, 205 GHz) to provide observations used to improve weather forecasting. The Aerospace Corporation's GPSRO experiment, called the Compact TEC (Total Electron Content) and Atmospheric GPS Sensor (CTAGS), measures profiles of temperature and pressure in the upper troposphere/lower stratosphere (∼20 km) and electron density in the ionosphere (over 100 km)...
December 2016: IEEE J Sel Top Appl Earth Obs Remote Sens
https://www.readbyqxmd.com/read/28821437/particle-sizing-of-pharmaceutical-aerosols-via-direct-imaging-of-particle-settling-velocities
#7
Rami Fishler, Frank Verhoeven, Wilbur de Kruijf, Josué Sznitman
We present a novel method for characterizing in near real-time the aerodynamic particle size distributions from pharmaceutical inhalers. The proposed method is based on direct imaging of airborne particles followed by a particle-by-particle measurement of settling velocities using image analysis and particle tracking algorithms. Due to the simplicity of the principle of operation, this method has the potential of circumventing potential biases of current real-time particle analyzers (e.g. Time of Flight analysis), while offering a cost effective solution...
August 16, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28813969/prediction-of-user-preference-over-shared-control-paradigms-for-a-robotic-wheelchair
#8
Ahmetcan Erdogan, Brenna D Argall
The design of intelligent powered wheelchairs has traditionally focused heavily on providing effective and efficient navigation assistance. Significantly less attention has been given to the end-user's preference between different assistance paradigms. It is possible to include these subjective evaluations in the design process, for example by soliciting feedback in post-experiment questionnaires. However, constantly querying the user for feedback during real-world operation is not practical. In this paper, we present a model that correlates objective performance metrics and subjective evaluations of autonomous wheelchair control paradigms...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813964/brain-computer-interface-combining-eye-saccade-two-electrode-eeg-signals-and-voice-cues-to-improve-the-maneuverability-of-wheelchair
#9
Ker-Jiun Wang, Lan Zhang, Bo Luan, Hsiao-Wei Tung, Quanfeng Liu, Jiacheng Wei, Mingui Sun, Zhi-Hong Mao
Brain-computer interfaces (BCIs) largely augment human capabilities by translating brain wave signals into feasible commands to operate external devices. However, many issues face the development of BCIs such as the low classification accuracy of brain signals and the tedious human-learning procedures. To solve these problems, we propose to use signals associated with eye saccades and blinks to control a BCI interface. By extracting existing physiological eye signals, the user does not need to adapt his/her brain waves to the device...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28811888/performance-test-and-verification-of-an-off-the-shelf-automated-avian-radar-tracking-system
#10
Roel May, Yngve Steinheim, Pål Kvaløy, Roald Vang, Frank Hanssen
Microwave radar is an important tool for observation of birds in flight and represents a tremendous increase in observation capability in terms of amount of surveillance space that can be covered at relatively low cost. Based on off-the-shelf radar hardware, automated radar tracking systems have been developed for monitoring avian movements. However, radar used as an observation instrument in biological research has its limitations that are important to be aware of when analyzing recorded radar data. This article describes a method for exploring the detection capabilities of a dedicated short-range avian radar system used inside the operational Smøla wind-power plant...
August 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28773193/an-advanced-multi-sensor-acousto-ultrasonic-structural-health-monitoring-system-development-and-aerospace-demonstration
#11
Joel Smithard, Nik Rajic, Stephen van der Velden, Patrick Norman, Cedric Rosalie, Steve Galea, Hanfei Mei, Bin Lin, Victor Giurgiutiu
A key longstanding objective of the Structural Health Monitoring (SHM) research community is to enable the embedment of SHM systems in high value assets like aircraft to provide on-demand damage detection and evaluation. As against traditional non-destructive inspection hardware, embedded SHM systems must be compact, lightweight, low-power and sufficiently robust to survive exposure to severe in-flight operating conditions. Typical Commercial-Off-The-Shelf (COTS) systems can be bulky, costly and are often inflexible in their configuration and/or scalability, which militates against in-service deployment...
July 20, 2017: Materials
https://www.readbyqxmd.com/read/28754428/mid-term-results-of-chimney-and-periscope-grafts-in-supra-aortic-branches-in-high-risk-patients
#12
F Pecoraro, M Lachat, N S Cayne, D Pakeliani, Z Rancic, G Puippe, F J Criado, T Pfammatter, F J Veith, B Krüger, T A Neff
PURPOSE: Report mid-term outcomes of thoracic endovascular aneurysm repair (TEVAR) with chimney and periscope grafts (CPG) in supra-aortic branches (SAB). METHODS: Retrospective analysis, from October 2009 to May 2014, of patients with aneurysms requiring TEVAR with zone 0/1/2 proximal landing in association with at least one CPG in the SAB. All patients were considered at high risk for conventional surgery. Peri-operative mortality and morbidity, retrograde type A dissection, maximum aortic transverse diameter (TD) and its post-operative evolution, endoleak, survival, freedom from cardiovascular re-interventions, and CPG freedom from occlusion during the follow-up were analysed...
July 25, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28718293/functional-design-of-dielectric-metal-dielectric-based-thin-film-encapsulation-with-heat-transfer-and-flexibility-for-flexible-displays
#13
Jeong Hyun Kwon, Seungyeop Choi, Yongmin Jeon, Hyuncheol Kim, Ki Soo Chang, Kyung Cheol Choi
In this study, a new and efficient dielectric-metal-dielectric-based thin-film encapsulation (DMD-TFE) with an inserted Ag thin film is proposed to guarantee the reliability of flexible displays by improving the barrier properties, mechanical flexibility, and heat dissipation, which are considered to be essential requirements for organic light-emitting diode (OLED) encapsulation. The DMD-TFE, which is composed of Al2O3, Ag, and a silica nanoparticle-embedded sol-gel hybrid nanocomposite, shows a water vapor transmission rate of 8...
August 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28716374/high-throughput-quantitation-of-fc-containing-recombinant-proteins-in-cell-culture-supernatant-by-fluorescence-polarization-spectroscopy
#14
Ben Thompson, Jerry Clifford, Mike Jenns, Andrew Smith, Ray Field, Kalpana Nayyar, David C James
Measurement of recombinant protein product titer critically underpins all biopharmaceutical manufacturing process development, as well as diverse research and discovery activity. Here, we describe a simple rapid (<2 min per 96 samples) 96-well microplate-based assay that enables high-throughput quantitation of recombinant immunoglobulin G and Fc-containing IgG derivatives in mammalian cell culture supernatant over a wide dynamic range of 2.5-80 mg/L, using microplate fluorescence polarization (FP) spectroscopy...
October 1, 2017: Analytical Biochemistry
https://www.readbyqxmd.com/read/28706751/development-and-implementation-of-a-coagulation-factor-testing-method-utilizing-autoverification-in-a-high-volume-clinical-reference-laboratory-environment
#15
Paul W Riley, Benoit Gallea, Andre Valcour
BACKGROUND: Testing coagulation factor activities requires that multiple dilutions be assayed and analyzed to produce a single result. The slope of the line created by plotting measured factor concentration against sample dilution is evaluated to discern the presence of inhibitors giving rise to nonparallelism. Moreover, samples producing results on initial dilution falling outside the analytic measurement range of the assay must be tested at additional dilutions to produce reportable results...
2017: Journal of Pathology Informatics
https://www.readbyqxmd.com/read/28688545/a-focus-on-the-state-of-the-art-of-food-waste-losses-issue-and-suggestions-for-future-researches
#16
Cinzia Muriana
Today, the role of the supply chain (SC) strategies in Food-Waste/Losses (F-W/L) generation is neglected, because F-W/L are generally considered an unavoidable consequence of accidental events. Therefore, only operating plans are today put into practice, which aim at reducing the impact of product losses along the SC. This involves that structured analyses and strategic SC approaches are not available for the prevention/minimization of F-W/L. The paper aims at changing the perspective, and promoting the hypothesis that generation of F-W/L mainly depends on the SC strategies put into practice that are usually optimized on the basis of the market demand...
July 5, 2017: Waste Management
https://www.readbyqxmd.com/read/28688219/performance-of-a-cost-effective-and-automated-blood-counting-system-for-resource-limited-settings-operated-by-trained-and-untrained-users
#17
Dengling Xie, Yanjun Xie, Peng Liu, Lieshu Tong, Chuanzhen Hu, Pengfei Shao, Kaiqin Chu, Zachary J Smith
Current flow-based blood counting devices require expensive and centralized medical infrastructure and are not appropriate for field use. In this article we report a streamlined, easy-to-use method to count red blood cells (RBC), white blood cells (WBC), platelets (PLT) and 3-part WBC differential through a cost-effective and automated image-based blood counting system. The approach consists of using a compact, custom-built microscope with large field-of-view to record bright-field and fluorescence images of samples that are diluted with a single, stable reagent mixture and counted using automatic algorithms...
July 8, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28679248/ultrasound-field-characterization-using-synthetic-schlieren-tomography
#18
Aki Pulkkinen, Jarkko J Leskinen, Aimo Tiihonen
Synthetic schlieren imaging, also known as background oriented schlieren imaging, is used to determine the acoustical field of a focused ultrasound transducer operating at 1.01 MHz frequency with peak pressure amplitude of 0.97 MPa. The measurement setup is composed of a commercial off-the-shelf digital single-lens reflex (DSLR) camera with an ordinary objective, a high power light-emitting diode driven in pulsating mode, water tank, ultrasound transducer, rotation stage, and driving electronics. Measurements are performed in tomographic fashion by rotating the ultrasound transducer within the water tank and photographing an imaged target behind the ultrasound field...
June 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28658228/on-chip-generation-of-high-dimensional-entangled-quantum-states-and-their-coherent-control
#19
Michael Kues, Christian Reimer, Piotr Roztocki, Luis Romero Cortés, Stefania Sciara, Benjamin Wetzel, Yanbing Zhang, Alfonso Cino, Sai T Chu, Brent E Little, David J Moss, Lucia Caspani, José Azaña, Roberto Morandotti
Optical quantum states based on entangled photons are essential for solving questions in fundamental physics and are at the heart of quantum information science. Specifically, the realization of high-dimensional states (D-level quantum systems, that is, qudits, with D > 2) and their control are necessary for fundamental investigations of quantum mechanics, for increasing the sensitivity of quantum imaging schemes, for improving the robustness and key rate of quantum communication protocols, for enabling a richer variety of quantum simulations, and for achieving more efficient and error-tolerant quantum computation...
June 28, 2017: Nature
https://www.readbyqxmd.com/read/28647330/effect-of-skim-milk-treated-with-high-hydrostatic-pressure-on-permeate-flux-and-fouling-during-ultrafiltration
#20
Mathilde Leu, Alice Marciniak, Julien Chamberland, Yves Pouliot, Laurent Bazinet, Alain Doyen
Ultrafiltration (UF) is largely used in the dairy industry to generate milk and whey protein concentrate for standardization of milk or production of dairy ingredients. Recently, it was demonstrated that high hydrostatic pressure (HHP) extended the shelf life of milk and improved rennet coagulation and cheese yield. Pressurization also modified casein micelle size distribution and promoted aggregation of whey proteins. These changes are likely to affect UF performance. Consequently, this study determined the effect of skim milk pressurization (300 and 600 MPa, 5 min) on UF performance in terms of permeate flux decline and fouling...
September 2017: Journal of Dairy Science
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