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https://www.readbyqxmd.com/read/29334456/building-ion-conduction-highways-in-polymeric-electrolytes-by-manipulating-protein-configuration
#1
Xuewei Fu, Chunhui Li, Yu Wang, Lucas Paul Kovatch, Louis Scudiero, Jin Liu, Wei-Hong Zhong
Solid polymer electrolytes play a critical role in the development of safe, flexible and all-solid-state energy storage devices. However, the low ion-conductivity has been the primary challenge impeding them from practical applications. Here, we propose a new biotechnology to fabricate novel protein-ceramic hybrid nanofillers for simultaneously boosting the ionic conductivity, mechanical properties and even adhesion properties of solid polymer electrolytes. This hybrid nanofiller is fabricated by coating ion-conductive soy-proteins onto TiO2 nanoparticles via a controlled denaturation process in appropriate solvent and conditions...
January 15, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29334128/improved-liver-r2-mapping-by-pixel-wise-curve-fitting-with-adaptive-neighborhood-regularization
#2
Changqing Wang, Xinyuan Zhang, Xiaoyun Liu, Taigang He, Wufan Chen, Qianjin Feng, Yanqiu Feng
PURPOSE: To improve liver R2* mapping by incorporating adaptive neighborhood regularization into pixel-wise curve fitting. METHODS: Magnetic resonance imaging R2* mapping remains challenging because of the serial images with low signal-to-noise ratio. In this study, we proposed to exploit the neighboring pixels as regularization terms and adaptively determine the regularization parameters according to the interpixel signal similarity. The proposed algorithm, called the pixel-wise curve fitting with adaptive neighborhood regularization (PCANR), was compared with the conventional nonlinear least squares (NLS) and nonlocal means filter-based NLS algorithms on simulated, phantom, and in vivo data...
January 15, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29332775/development-and-testing-of-a-neonatal-intubation-checklist-for-an-air-medical-transport-team
#3
Lisa A Davidson, Richard B Utarnachitt, Andrew Mason, Taylor Sawyer
OBJECTIVE: We developed a Neonatal Intubation Checklist for Airlift Northwest. Our goal was to improve the preparation, technical proficiency, and safety of neonatal intubation without increasing the time required to perform the procedure. METHODS: The Neonatal Intubation Checklist, a "call and response" checklist for neonatal intubation, was developed. Its effectiveness was evaluated during a baseline assessment and 2 practice sessions after a checklist orientation...
January 2018: Air Medical Journal
https://www.readbyqxmd.com/read/29332468/local-radiotherapy-affects-drug-pharmacokinetics-exploration-of-a-neglected-but-significant-uncertainty-of-cancer-therapy
#4
Yu-Jen Chen, Tung-Hu Tsai, Li-Ying Wang, Chen-Hsi Hsieh
PURPOSE: Concurrent chemoradiation therapy is the mainstay of treatment for many types of malignancies. However, concurrent chemoradiation therapy is associated with a greater number of systemic adverse effects than radiotherapy or chemotherapy alone. SUMMARY: Pharmacokinetics is the study of a drug and/or its metabolite kinetics in the body, including absorption, distribution, metabolism, and elimination. The incidences of adverse effects are markedly higher in patients who receive concurrent chemoradiation therapy than in those who receive either radiotherapy or chemotherapy alone...
December 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/29332454/intrafractional-tracking-accuracy-of-a-transperineal-ultrasound-image-guidance-system-for-prostate-radiotherapy
#5
Amy S Yu, Mohammad Najafi, Dimitre H Hristov, Tiffany Phillips
PURPOSE: The aim of this study is to evaluate the tracking accuracy of a commercial ultrasound system under relevant treatment conditions and demonstrate its clinical utility for detecting significant treatment deviations arising from inadvertent intrafractional target motion. METHODS: A multimodality male pelvic phantom was used to simulate prostate image-guided radiotherapy with the system under evaluation. Target motion was simulated by placing the phantom on a motion platform...
December 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/29331902/the-use-of-interprofessional-learning-and-simulation-in-undergraduate-nursing-programs-to-address-interprofessional-communication-and-collaboration-an-integrative-review-of-the-literature
#6
REVIEW
Benedikte M Granheim, Julie M Shaw, Martha Mansah
OBJECTIVE: To identify how simulation and interprofessional learning are used together in undergraduate nursing programs and undertaken in schools of nursing to address interprofessional communication and collaboration. DESIGN: An integrative literature review. DATA SOURCES: The databases CINAHL, ProQuest, PubMed, Scopus, PsycInfo and Science Direct were searched to identify articles from 2006 to 2016 that reported on the use of IPL and simulation together in undergraduate nursing education...
December 29, 2017: Nurse Education Today
https://www.readbyqxmd.com/read/29331854/trade-offs-between-forest-carbon-stocks-and-harvests-in-a-steady-state-a-multi-criteria-analysis
#7
Kim Pingoud, Tommi Ekholm, Risto Sievänen, Saija Huuskonen, Jari Hynynen
This paper provides a perspective for comparing trade-offs between harvested wood flows and forest carbon stocks with different forest management regimes. A constant management regime applied to a forest area with an even age-class distribution leads to a steady state, in which the annual harvest and carbon stocks remain constant over time. As both are desirable - carbon stocks for mitigating climate change and harvests for the economic use of wood and displacing fossil fuels - an ideal strategy should be chosen from a set of management regimes that are Pareto-optimal in the sense of multi-criteria decision-making...
January 11, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29331784/degradation-of-dyes-by-peroxymonosulfate-activated-by-ternary-cofeni-layered-double-hydroxide-catalytic-performance-mechanism-and-kinetic-modeling
#8
Hanxuan Zeng, Weiqiu Zhang, Lin Deng, Jinming Luo, Shiqing Zhou, Xia Liu, Yong Pei, Zhou Shi, John Crittenden
Ternary CoFeNi-layered double hydroxide (CoFeNi-LDH) was synthesized and initially applied to activate peroxymonosulfate (PMS) for the degradation of Congo red (CR) and Rhodamine B (RhB). The results show that the CoFeNi-LDH/PMS system can efficiently degrade nearly 100% of 20 mg/L CR or 20 mg/L RhB within 6- and 10-min reaction times, respectively. And the catalyst exhibits higher degradation efficiency on CR than on RhB under identical conditions, which is confirmed by electron clouds of the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) performed by DFT calculations...
January 4, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29331775/experience-of-lecturers-with-simulation-training-in-midwifery-education-in-slovakia
#9
Erika Maskálová, Eva Urbanová, Martina Bašková, Eva Kvaltínyová
The simulation training in midwifery has a long tradition. It is aimed at acquiring basic and advanced practical skills such as performing a certain number of births, episiotomy and subsequent suture, assisting during breech birth etc. Midwifery education is currently based on the requirements of the Directives of the European Union exactly specifying number of performed practical procedures and approaches (World Health Organisation (WHO) Europe, 2009). The aim of this paper is to draw attention to the experience with the simulation training from the teacher's point of view in the study program Midwifery in Slovakia...
January 5, 2018: Midwifery
https://www.readbyqxmd.com/read/29331134/coarse-grained-model-of-nanoscale-segregation-water-diffusion-and-proton-transport-in-nafion-membranes
#10
Aleksey Vishnyakov, Runfang Mao, Ming-Tsung Lee, Alexander V Neimark
We present a coarse-grained model of the acid form of Nafion membrane that explicitly includes proton transport. This model is based on a soft-core bead representation of the polymer implemented into the dissipative particle dynamics (DPD) simulation framework. The proton is introduced as a separate charged bead that forms dissociable Morse bonds with water beads. Morse bond formation and breakup artificially mimics the Grotthuss hopping mechanism of proton transport. The proposed DPD model is parameterized to account for the specifics of the conformations and flexibility of the Nafion backbone and sidechains; it treats electrostatic interactions in the smeared charge approximation...
January 14, 2018: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29330842/self-perceived-long-term-transfer-of-learning-after-postpartum-hemorrhage-simulation-training
#11
Brena C P Melo, Ana R Falbo, Jette Led Sorensen, Jeroen J G van Merriënboer, Cees van der Vleuten
OBJECTIVE: To explore long-term transfer (application of acquired knowledge and skills on the job) after postpartum hemorrhage simulation training based on either instructional design (ID) principles or conventional best practice. METHODS: In this qualitative study, semi-structured interviews with obstetrics and gynecology healthcare practitioners were conducted between August 7 and September 26, 2015, in Recife, Brazil. The participants were randomly selected from each of two postpartum hemorrhage simulations attended 2 years earlier (one ID and one conventional best practice)...
January 13, 2018: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/29329426/a-practical-guide-to-estimating-the-heritability-of-pathogen-traits
#12
Venelin Mitov, Tanja Stadler
Pathogen traits, such as the virulence of an infection, can vary significantly between patients. A major challenge is to measure the extent to which genetic differences between infecting strains explain the observed variation of the trait. This is quantified by the trait's broad-sense heritability, H2. A recent discrepancy between estimates of the heritability of HIV-virulence has opened a debate on the estimators' accuracy. Here, we show that the discrepancy originates from model limitations and important lifecycle differences between sexually reproducing organisms and transmittable pathogens...
January 9, 2018: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/29329283/modeling-the-assembly-order-of-multimeric-heteroprotein-complexes
#13
Lenna X Peterson, Yoichiro Togawa, Juan Esquivel-Rodriguez, Genki Terashi, Charles Christoffer, Amitava Roy, Woong-Hee Shin, Daisuke Kihara
Protein-protein interactions are the cornerstone of numerous biological processes. Although an increasing number of protein complex structures have been determined using experimental methods, relatively fewer studies have been performed to determine the assembly order of complexes. In addition to the insights into the molecular mechanisms of biological function provided by the structure of a complex, knowing the assembly order is important for understanding the process of complex formation. Assembly order is also practically useful for constructing subcomplexes as a step toward solving the entire complex experimentally, designing artificial protein complexes, and developing drugs that interrupt a critical step in the complex assembly...
January 12, 2018: PLoS Computational Biology
https://www.readbyqxmd.com/read/29329003/modified-forest-rotation-lengths-long-term-effects-on-landscape-scale-habitat-availability-for-specialized-species
#14
Jean-Michel Roberge, Karin Öhman, Tomas Lämås, Adam Felton, Thomas Ranius, Tomas Lundmark, Annika Nordin
We evaluated the long-term implications from modifying rotation lengths in production forests for four forest-reliant species with different habitat requirements. By combining simulations of forest development with habitat models, and accounting both for stand and landscape scale influences, we projected habitat availability over 150 years in a large Swedish landscape, using rotation lengths which are longer (+22% and +50%) and shorter (-22%) compared to current practices. In terms of mean habitat availability through time, species requiring older forest were affected positively by extended rotations, and negatively by shortened rotations...
January 9, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29328182/mechano-optical-modulator-based-on-a-rotating-optical-flat-applied-to-simultaneous-holographic-multiplexing-of-gratings
#15
Jan Matrisch, Stefan Altmeyer
Simultaneous holographic multiplexing methods are used to store multiple holograms concurrently into one holographic volume. Compared to serial exposure, one advantage is the higher processing speed. Additionally, for parallel exposure the different gratings develop in a linear relation to one another, although the developing process itself is nonlinear caused by the holographic photopolymer. A mechano-optical modulator using a rotating optical flat is introduced to enable economic single-shot exposure of centimeter to decimeter-sized holograms utilizing only one laser...
January 10, 2018: Applied Optics
https://www.readbyqxmd.com/read/29328158/volume-holographic-spatial-mode-demultiplexer-with-a-dual-wavelength-method
#16
Shimpei Shimizu, Atsushi Okamoto, Fumiya Mizukawa, Kazuhisa Ogawa, Akihisa Tomita, Taketoshi Takahata, Satoshi Shinada, Naoya Wada
Volume holographic demultiplexers (VHDMs) provide spatial mode demultiplexing using simple optical systems. However, applying VHDM to practical optical communication systems is difficult, as typical holographic media have no sensitivity in the infrared region, which includes optical transmission bands. In this paper, we propose a VHDM scheme combined with a dual-wavelength method (DWM). Using the DWM, VHDMs are able to perform mode demultiplexing in the optical transmission bands. We experimentally demonstrated the basic operation of our proposal using experiments performed at an 850-nm wavelength...
January 10, 2018: Applied Optics
https://www.readbyqxmd.com/read/29328144/error-of-image-saturation-in-the-structured-light-method
#17
Zhaoshuai Qi, Zhao Wang, Junhui Huang, Chao Xing, Jianmin Gao
In the phase-measuring structured-light method, image saturation will induce large phase errors. Usually, by selecting proper system parameters (such as the phase-shift number, exposure time, projection intensity, etc.), the phase error can be reduced. However, due to lack of a complete theory of phase error, there is no rational principle or basis for the selection of the optimal system parameters. For this reason, the phase error due to image saturation is analyzed completely, and the effects of the two main factors, including the phase-shift number and saturation degree, on the phase error are studied in depth...
January 1, 2018: Applied Optics
https://www.readbyqxmd.com/read/29328126/universal-phase-depth-mapping-in-a-structured-light-field
#18
Zewei Cai, Xiaoli Liu, Xiang Peng, Bruce Z Gao
Technologies and devices for light field imaging have recently been developed for both industrial applications and scientific research to achieve excellent imaging properties. In our previous work, we combined light field imaging with structured illumination to propose a structured light field method in which multidirectional depth estimation can be performed for high-quality 3D imaging. However, the projection axis was implicitly assumed to be perpendicular to the reference plane, which is hard to meet in practice...
January 1, 2018: Applied Optics
https://www.readbyqxmd.com/read/29328121/high-precision-rotation-angle-measurement-method-based-on-a-lensless-digital-holographic-microscope
#19
Yumin Wu, Haobo Cheng, Yongfu Wen
To accurately measure ultrasmall rotation angles, a robust and effective method based on lensless digital holographic microscopy is proposed in this paper. The method combines holographic microscopy, solid geometry, and 3D measurement, including holographic measurement and angle measurement processes. We can calculate the 3D shape by the angular spectrum algorithm and the least-squares phase-unwrapping algorithm in the holographic process. According to the relationship between the surface shape and rotation angles, the real-time rotation angles can be calculated...
January 1, 2018: Applied Optics
https://www.readbyqxmd.com/read/29328110/modeling-simulation-and-fabrication-of-bi-directional-mode-division-multiplexing-for-silicon-on-insulator-platform
#20
Omnia M Nawwar, Hossam M H Shalaby, Ramesh K Pokharel
A strip waveguide-based bi-directional mode-division multiplexer is proposed. A mathematical model has been proposed to analyze the performance, and the results are simulated. The design concept of this device to (de)multiplex three modes simultaneously has been studied previously for slab waveguides, both mathematically using the perturbative mode-coupled theory and by simulation using 2D FDTD Solutions (FDTD, finite difference time domain). As slab waveguides are not suitable for extracting fabrication parameters for most silicon-on-insulator applications, we apply the concept to a more practical device that involves strip waveguides rather than slab waveguides...
January 1, 2018: Applied Optics
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