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https://www.readbyqxmd.com/read/28529730/effect-of-low-versus-high-frequency-stimulation-on-freezing-of-gait-and-other-axial-symptoms-in-parkinson-patients-with-bilateral-stn-dbs-a-mini-review
#1
REVIEW
Tao Xie, Mahesh Padmanaban, Lisa Bloom, Ellen MacCracken, Breanna Bertacchi, Abraham Dachman, Peter Warnke
Some studies have shown that low frequency stimulation (LFS, most commonly 60 Hz), compared to high frequency stimulation (HFS, most commonly 130 Hz), has beneficial effects, short-term or even long-term, on improving freezing of gait (FOG) and other axial symptoms, including speech and swallowing function, in Parkinson disease (PD) patients with bilateral subthalamic nucleus deep brain stimulation (STN DBS). However, other studies failed to confirm this. It seems not clear what determines the difference in response to LFS...
2017: Translational Neurodegeneration
https://www.readbyqxmd.com/read/28521148/dual-task-interference-on-postural-sway-postural-transitions-and-gait-in-people-with-parkinson-s-disease-and-freezing-of-gait
#2
Ana Claudia de Souza Fortaleza, Martina Mancini, Patty Carlson-Kuhta, Laurie A King, John G Nutt, Eliane Ferrari Chagas, Ismael Forte Freitas, Fay B Horak
Freezing of gait (FoG) is associated with less automatic gait and more impaired cognition, balance and postural transitions compared to people with PD who do not have FoG. However, it is unknown whether dual-task cost during postural sway, postural transitions (such as gait initiation and turning), and gait are more in subjects with Parkinson's disease (PD) who have freezing of gait (FoG+) compared to those who do not have FoG (FoG-). Here, we hypothesized that the effects of a cognitive dual task on postural sway, postural transitions and gait would be larger in FoG+ than FoG-...
May 10, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28521045/effects-of-ambient-temperature-and-water-vapor-on-chamber-pressure-and-oxygen-level-during-low-atmospheric-pressure-stunning-of-poultry
#3
Paul H Holloway, David G Pritchard
The characteristics of the vacuum used in a low atmospheric pressure stunning system to stun (render unconscious) poultry prior to slaughter are described. A vacuum chamber is pumped by a wet screw compressor. The vacuum pressure is reduced from ambient atmospheric pressure to an absolute vacuum pressure of ∼250 Torr (∼33 kPa) in ∼67 sec with the vacuum gate valve fully open. At ∼250 Torr, the sliding gate valve is partially closed to reduce effective pumping speed, resulting in a slower rate of decreasing pressure...
May 17, 2017: Poultry Science
https://www.readbyqxmd.com/read/28509934/the-role-of-the-prefrontal-cortex-in-freezing-of-gait-in-parkinson-s-disease-insights-from-a-deep-repetitive-transcranial-magnetic-stimulation-exploratory-study
#4
Moria Dagan, Talia Herman, Anat Mirelman, Nir Giladi, Jeffrey M Hausdorff
Freezing of Gait (FOG) is one of the most debilitating gait impairments in Parkinson's disease (PD), leading to increased fall risk and reduced health-related quality of life. The utility of parkinsonian medications is often limited in the case of FOG and it frequently becomes dopamine resistant. Recent studies have suggested that pre-frontal cortex (PFC) dysfunction contributes to FOG; however, most previous findings provide only indirect evidence. To better understand the role of the PFC, we aimed to investigate the impact of high frequency, deep, repetitive transcranial magnetic stimulation (drTMS) of the medial PFC on FOG and its mediators...
May 16, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28505982/factors-contributing-to-perceived-walking-difficulties-in-people-with-parkinson-s-disease
#5
Manzur Kader, Susann Ullén, Susanne Iwarsson, Per Odin, Maria H Nilsson
BACKGROUND: While walking difficulties are common in people with Parkinson's disease (PD), little is known about factors that independently contribute to their perceived walking difficulties. OBJECTIVE: To identify factors that independently contribute to perceived walking difficulties in people with PD. METHODS: This study involved 243 (62% men) participants; their mean (min-max) age and PD duration were 70 (45-93) and 8 (1-43) years, respectively...
May 9, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28504934/vision-based-surgical-field-defogging
#6
Xiongbiao Luo, A McLeod, Stephen Pautler, Christopher Schlachta, Terry Peters
Fogged surgical field visualization that is a common and potentially harmful problem can lead to inappropriate device use and incorrectly targeted tissue and increase surgical risks in endoscopic surgery. This work aims to remove fog or smoke on endoscopic video sequences to augment and maintain a direct and clear visualization of the operating field. A new visibilitydriven fusion defogging framework is proposed for surgical endoscopic video processing. This framework first recovers the visibility and enhances the contrast of hazy images...
May 11, 2017: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/28504161/rapid-fabrication-of-tio2-carboxymethyl-cellulose-coatings-capable-of-shielding-uv-antifog-and-delaying-support-aging
#7
Xiaozhou Li, Junping Lv, Dehuai Li, Lin Wang
Agricultural plastic films capable of shielding UV, filtering visible light and antifog are important to prolong their life and protect safeties of agriculturists and crops. In this work, high stable and small size TiO2@polymer nanoparticles (NPs) were prepared by an efficient one-pot microwave synthesis using titanic sulfate as Ti resource, carboxymethyl cellulose sodium (CMC) as complexing agent and stabilizer. The TiO2@CMC NPs obtained were then utilized to fabricate poly(ethylene imine) (PEI)/TiO2@CMC coatings on the surface of polypropylene films by a layer-by-layer assembly technique...
August 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28500575/salt-and-blood-pressure-cutting-through-the-scientific-fog
#8
REVIEW
Emrush Rexhaj, Franz H Messerli, David Cerny, Juergen Bohlender
No abstract text is available yet for this article.
June 2017: Current Hypertension Reports
https://www.readbyqxmd.com/read/28498738/biogas-production-from-anaerobic-digestion-of-food-waste-and-relevant-air-quality-implications
#9
Jeff Kuo, Jason Dow
Biopower can diversify energy supply and improve energy resiliency. Increases in biopower production from sustainable biomass can provide many economic and environmental benefits. For example, increasing biogas production through anaerobic digestion of food waste would increase the use of renewable fuels throughout California and add to its renewables portfolio. Although a biopower project will produce renewable energy, the process of producing bioenergy should harmonize with the goal of protecting public health...
May 12, 2017: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/28495958/maternal-torso-like-coordinates-tissue-folding-during-drosophila-gastrulation
#10
Travis K Johnson, Karyn A Moore, James C Whisstock, Coral G Warr
The rapid and orderly folding of epithelial tissue during developmental processes such as gastrulation requires the precise coordination of changes in cell shape. Here, we report that the perforin-like protein Torso-like (Tsl), the key extracellular determinant for Drosophila embryonic terminal patterning, also functions to control epithelial morphogenesis. We find that tsl null mutants display a ventral cuticular hole phenotype that is independent of the loss of terminal structures, and arises as a consequence of mesoderm invagination defects...
May 11, 2017: Genetics
https://www.readbyqxmd.com/read/28475053/fog-density-estimation-and-image-defogging-based-on-surrogate-modeling-for-optical-depth
#11
Yutong Jiang, Changming Sun, Yu Zhao, Li Yang
In order to estimate fog density correctly and to remove fog from foggy images appropriately, a surrogate model for optical depth is presented in this paper. We comprehensively investigate various fog-relevant features and propose a novel feature based on the hue, saturation, and value color space which correlate well with the perception of fog density. We use a surrogate-based method to learn a refined polynomial regression model for optical depth with informative fog-relevant features such as dark-channel, saturation-value, and chroma which are selected on the basis of sensitivity analysis...
May 3, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28472034/the-fog-of-war-how-network-buffering-protects-plants-defense-secrets-from-pathogens
#12
Brett M Tyler
No abstract text is available yet for this article.
May 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28468544/-shrouded-in-a-dark-fog-comparison-of-the-diagnosis-of-pellagra-in-venice-and-general-paralysis-of-the-insane-in-the-united-kingdom-1840-1900
#13
Egidio Priani
The debate on the causes and the nature of pellagra in Italy during the nineteenth century resembles and evokes the similar debate on General Paralysis of the Insane (GPI) that was growing at the same time in the United Kingdom. Pellagra and GPI had a massive and virulent impact on the populations of Italy and the UK, respectively, and contributed to a great extent to the increase and overcrowding of the asylum populations in these countries. This article compares the two illnesses by examining the features of their nosographic positioning, aetiology and pathogenesis...
June 2017: History of Psychiatry
https://www.readbyqxmd.com/read/28468246/the-relationship-of-pm-variation-with-visibility-and-mixing-layer-height-under-hazy-foggy-conditions-in-the-multi-cities-of-northeast-china
#14
Hujia Zhao, Huizheng Che, Yanjun Ma, Yangfeng Wang, Hongbin Yang, Yuche Liu, Yaqiang Wang, Hong Wang, Xiaoye Zhang
The variations of visibility, PM-mass concentration and mixing-layer height (MLH) in four major urban/industry regions (Shenyang, Anshan, Benxi and Fushun) of central Liaoning in Northeast China are evaluated from 2009 to 2012 to characterize their dynamic effect on air pollution. The annual mean visibilities are about 13.7 ± 7.8, 13.5 ± 6.5, 12.8 ± 6.1 and 11.5 ± 6.8 km in Shenyang, Anshan, Benxi and Fushun, respectively. The pollution load (PM × MLH) shows a weaker vertical diffusion in Anshan, with a higher PM concentration near the surface...
April 29, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28466785/identification-of-plasma-micrornas-as-new-potential-biomarkers-with-high-diagnostic-power-in-human-cutaneous-melanoma
#15
Stefano Fogli, Beatrice Polini, Sara Carpi, Barbara Pardini, Alessio Naccarati, Nevio Dubbini, Maria Lanza, Maria Cristina Breschi, Antonella Romanini, Paola Nieri
Melanoma is a devastating disease with few therapeutic options in the advanced stage and with the urgent need of reliable biomarkers for early detection. In this context, circulating microRNAs are raising great interest as diagnostic biomarkers. We analyzed the expression profiles of 21 selected microRNAs in plasma samples from melanoma patients and healthy donors to identify potential diagnostic biomarkers. Data analysis was performed using global mean normalization and NormFinder algorithm. Linear regression followed by receiver operating characteristic analyses was carried out to evaluate whether selected plasma miRNAs were able to discriminate between cases and controls...
May 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28463278/extracting-and-compensating-for-fog-vibration-error-based-on-improved-empirical-mode-decomposition-with-masking-signal
#16
Xiyuan Chen, Wei Wang
Vibration is an important error source in fiber-optic gyroscopes (FOGs), and the extraction and compensation of vibration signals are important ways to eliminate the error and improve the accuracy of FOG. To decompose the vibration signal better, a new algorithm based on empirical mode decomposition (EMD) with masking signal is proposed in this paper. The masking signal is a kind of sinusoidal signal, and the frequency and amplitude of the masking signal are selected using improved particle swarm optimization...
May 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/28454869/hierarchical-ordered-model-for-injury-severity-of-pedestrian-crashes-in-south-korea
#17
Myeonghyeon Kim, Seung-Young Kho, Dong-Kyu Kim
INTRODUCTION: The high percentage of fatalities in pedestrian-involved crashes is a critical social problem. The purpose of this study is to investigate factors influencing injury severity in pedestrian crashes by examining the demographic and socioeconomic characteristics of the regions where crashes occurred. METHOD: To understand the correlation between the unobserved characteristics of pedestrian crashes in a defined region, we apply a hierarchical ordered model, in which we set crash characteristics as lower-level variables and municipality characteristics as upper-level...
June 2017: Journal of Safety Research
https://www.readbyqxmd.com/read/28445417/ins-gnss-integration-for-aerobatic-flight-applications-and-aircraft-motion-surveying
#18
Edgar L V Hinüber, Christian Reimer, Tim Schneider, Michael Stock
This paper presents field tests of challenging flight applications obtained with a new family of lightweight low-power INS/GNSS (inertial navigation system/global satellite navigation system) solutions based on MEMS (micro-electro-mechanical- sensor) machined sensors, being used for UAV (unmanned aerial vehicle) navigation and control as well as for aircraft motion dynamics analysis and trajectory surveying. One key is a 42+ state extended Kalman-filter-based powerful data fusion, which also allows the estimation and correction of parameters that are typically affected by sensor aging, especially when applying MEMS-based inertial sensors, and which is not yet deeply considered in the literature...
April 26, 2017: Sensors
https://www.readbyqxmd.com/read/28409808/aircraft-navigation-grade-laser-driven-fog-with-gaussian-noise-phase-modulation
#19
Jacob Chamoun, Michel J F Digonnet
A laser-driven fiber optic gyroscope (FOG) is demonstrated with an angular random walk noise of 5.5×10<sup>-4</sup>  deg/√h, a drift of 6.8×10<sup>-3</sup>  deg/h, and an inferred scale-factor stability of 0.15 ppm, making it, to the best of our knowledge, the first laser-driven FOG to satisfy the performance requirements for inertial navigation of commercial aircraft. This is achieved using Gaussian white noise phase modulation to broaden the linewidth of the source laser and to strongly suppress the narrow-linewidth optical carrier...
April 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28386426/celestial-polarization-patterns-sufficient-for-viking-navigation-with-the-naked-eye-detectability-of-haidinger-s-brushes-on-the-sky-versus-meteorological-conditions
#20
Gábor Horváth, Péter Takács, Balázs Kretzer, Szilvia Szilasi, Dénes Száz, Alexandra Farkas, András Barta
If a human looks at the clear blue sky from which light with high enough degree of polarization d originates, an 8-shaped bowtie-like figure, the yellow Haidinger's brush can be perceived, the long axis of which points towards the sun. A band of high d arcs across the sky at 90° from the sun. A person can pick two points on that band, observe the yellow brushes and triangulate the position of the sun based on the orientation of the two observed brushes. This method has been suggested to have been used on the open sea by Viking navigators to determine the position of the invisible sun occluded by cloud or fog...
February 2017: Royal Society Open Science
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