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Rachel Wells, Andrew J Spurrier, Dominik Linz, Celine Gallagher, Rajiv Mahajan, Prashanthan Sanders, Amanda Page, Dennis H Lau
Postural tachycardia syndrome (POTS) is the combination of an exaggerated heart rate response to standing, in association with symptoms of lightheadedness or pre-syncope that improve when recumbent. The condition is often associated with fatigue and brain fog, resulting in significant disruptions at a critical time of diagnosis in adolescence and young adulthood. The heterogeneity of the underlying pathophysiology and the variable response to therapeutic interventions make management of this condition challenging for both patients and physicians alike...
2018: Vascular Health and Risk Management
Timothy E Murray, Tayyaub Mansoor, Dermot J Bowden, Damien C O'Neill, Michael J Lee
RATIONALE AND OBJECTIVES: Investigators aimed to assess online information describing uterine artery embolization (UAE) to examine the quality and readability of websites patients are accessing. MATERIALS AND METHODS: A list of applicable, commonly used searchable terms was generated, including "Uterine Artery Embolization," "Fibroid Embolization," "Uterine Fibroid Embolization," and "Uterine Artery Embolisation." Each possible term was assessed across the five most-used English language search engines to determine the most commonly used term...
January 10, 2018: Academic Radiology
Ling Ai, Jing Zhang, Xiao Li, Yuehui Lu, Weijie Song
In this work, we developed a universal low-temperature process for the preparation of multi-functional and robust mesoporous silica anti-reflective coatings on transparent polymeric substrates. The mesoporous silica layer was formed after UV-O3 exposure and ammonia vapor treatment of dried poly (ethylene glycol)-block-poly (propylene glycol)-block-poly (ethylene glycol) (F127)-containing acidic silica gel. The optical and anti-scrubbing properties of the mesoporous silica coating were comparable to the coating prepared at 250 oC...
January 10, 2018: ACS Applied Materials & Interfaces
Mengyuan Wang, Yongqiang Zong, Zhuo Zheng, Meiling Man, Jianfang Hu, Liping Tian
Bacterial branched glycerol dialkyl glycerol tetraethers (brGDGTs) have been successfully used as quantitative climate proxies for reconstructing annual mean air temperature (MAT) and soil pH from sediments. However, reconstructions derived from brGDGTs in regions with diverse hydrological and atmospheric conditions require further refinement. In this study, we investigated the suitability of brGDGTs as temperature and precipitation proxies from surface soils on opposite slopes of Mount Fanjing in subtropical China...
January 9, 2018: Scientific Reports
Jing Jin, Ting Zhang, Linghai Kong, Kun Ma
An in-orbit experiment was launched to evaluate the performance of the spaceborne high precision fiber optic gyroscopes (FOG). The three-axis in-orbit data of the FOG were analyzed using wavelet analysis method. Features of low frequency period terms and glitch noise were demonstrated. In addition, a method to extract the random noise from the in-orbit data is proposed based on the first-order difference method and the Pauta criterion. In addition, the random walk coefficient (RWC) of the FOG was calculated with the Allan variance method...
January 1, 2018: Sensors
E Henry Lee, Peter A Beedlow, Ronald S Waschmann, David T Tingey, Steven Cline, Michael Bollman, Charlotte Wickham, Cailie Carlile
The fungal pathogen, Phaeocryptopus gaeumannii, causing Swiss needle cast (SNC) occurs wherever Douglas-fir is found but disease damage is believed to be limited in the U.S. Pacific Northwest (PNW) to the Coast Range of Oregon and Washington (Hansen et al., Plant Disease, 2000, 84, 773; Rosso & Hansen, Phytopathology, 2003, 93, 790; Shaw, et al., Journal of Forestry, 2011, 109, 109). However, knowledge remains limited on the history and spatial distribution of SNC impacts in the PNW. We reconstructed the history of SNC impacts on mature Douglas-fir trees based on tree-ring width chronologies from western Oregon...
December 2017: Ecology and Evolution
J Michael Pontious
No abstract text is available yet for this article.
March 2017: Journal of the Oklahoma State Medical Association
Konstantinos Gerasopoulos, William Lloyd Luedeman, Emre Ölçeroğlu, Matthew McCarthy, Jason J Benkoski
Surface wettability plays an important role in dew collection. Nucleation is faster on hydrophilic surfaces, while droplets slide more readily on hydrophobic surfaces. Plants and animals in coastal desert environments appear to overcome this tradeoff through biphilic surfaces with patterned wettability. In this study, we investigate the effects of millimeter-scale wettability patterns, mimicking those of the Stenocara beetle, on the rate of water collection from humid air. The rate of water collection per unit area is measured as a function of subcooling (ΔT = 1, 7, and 27°C) and angle of inclination (from 10° to 90°)...
January 3, 2018: ACS Applied Materials & Interfaces
Hui Wang, Gordon E Legge
Visual blur is a common problem that causes difficulty in pattern recognition for normally sighted people under degraded viewing conditions (e.g., near the acuity limit, when defocused, or in fog) and also for people with impaired vision. For reliable identification, the spatial frequency content of an object needs to extend up to or exceed a minimum value in units of cycles per object, referred to as the critical spatial frequency. In this study, we investigated the critical spatial frequency for alphabet and Chinese characters, and examined the effect of pattern complexity...
January 1, 2018: Journal of Vision
Samantha Ayoub, Edmund Tsui, Taariq Mohammed, Joseph Tseng
PURPOSE: To evaluate the readability of online uveitis patient education materials. METHODS: A Google search in November 2016 was completed using search term "uveitis" and "uveitis inflammation." The top 50 websites with patient-centered information were selected and analyzed for readability using the Flesch-Kincaid Grade Level (FKGL), Flesch Reading Ease Score (FRES), Gunning FOG Index (GFI), and Simple Measure of Gobbledygook (SMOG). Statistical analysis was performed with two-tailed t-tests...
December 29, 2017: Ocular Immunology and Inflammation
Yongxuan Lai, Fan Yang, Jinsong Su, Qifeng Zhou, Tian Wang, Lu Zhang, Yifan Xu
Vehicular nodes are equipped with more and more sensing units, and a large amount of sensing data is generated. Recently, more and more research considers cooperative urban sensing as the heart of intelligent and green city traffic management. The key components of the platform will be a combination of a pervasive vehicular sensing system, as well as a central control and analysis system, where data-gathering is a fundamental component. However, the data-gathering and monitoring are also challenging issues in vehicular sensor networks because of the large amount of data and the dynamic nature of the network...
December 29, 2017: Sensors
Lei Gu, Pei-Lin Liu, Hong Zhou, Qing Xu
OBJECTIVE: The aim of this study was to investigate the feasibility of digital defog technique in 3D laparoscopic surgery for right colon cancer. METHODS: Fifty patients with right colon cancer were divided into digital defogging group and control group. The intraoperative image clarity, the surgeon's anxiety, the time of operation and the time of fog nursing were compared. RESULTS: The clarity of the video screen of the digital defogging group was significantly higher than that of the control group, and the degree of anxiety was significantly lower than that of the control group...
December 29, 2017: World Journal of Surgery
Aitor Agirre, Aintzane Armentia, Elisabet Estévez, Marga Marcos
eHealth systems have adopted recent advances on sensing technologies together with advances in information and communication technologies (ICT) in order to provide people-centered services that improve the quality of life of an increasingly elderly population. As these eHealth services are founded on the acquisition and processing of sensitive data (e.g., personal details, diagnosis, treatments and medical history), any security threat would damage the public's confidence in them. This paper proposes a solution for the design and runtime management of indoor eHealth applications with security requirements...
December 26, 2017: Sensors
Olivier Goupille, Tipparat Penglong, Zahra Kadri, Marine Granger-Locatelli, Raphaël Denis, Serge Luquet, Cécile Badoual, Suthat Fucharoen, Leila Maouche-Chrétien, Philippe Leboulch, Stany Chrétien
GATA transcription factors and their FOG cofactors play a key role in tissue-specific development and differentiation, from worms to humans. Mammals have six GATA and two FOG factors. We recently demonstrated that interactions between retinoblastoma protein (pRb) and GATA-1 are crucial for erythroid proliferation and differentiation. We show here that the LXCXE pRb-binding site of FOG-2 is involved in adipogenesis. Unlike GATA-1, which inhibits cell division, FOG-2 promotes proliferation. Mice with a knockin of a Fog2 gene bearing a mutated LXCXE pRb-binding site are resistant to obesity and display higher rates of white-to-brown fat conversion...
December 19, 2017: Cell Reports
Lingcao Wang, Kui Li, Yuanpei Chen, Juncheng Liu, Yanchun Xu
Rotation modulation technology could effectively improve the accuracy of the inertial navigation system (INS) by compensating for the biases of the inertial sensors automatically. However, the carrier angular motion and rotation control error could reduce the rotation modulation effect and then decrease the navigation accuracy. To address this problem, for the single-axis rotation INS, a novel rotation control scheme is presented. The control scheme employs the fiber optic gyros to control the inertial measurement unit (IMU) rotation angular velocity so that the INS with both rotation modulation and azimuth motion insulation functions...
December 11, 2017: Optics Express
Evelien Nackaerts, Alice Nieuwboer, Sanne Broeder, Stephan Swinnen, Wim Vandenberghe, Elke Heremans
Recently, it was shown that patients with Parkinson's disease (PD) and freezing of gait (FOG) can also experience freezing episodes during handwriting and present writing problems outside these episodes. So far, the neural networks underlying increased handwriting problems in subjects with FOG are unclear. This study used dynamic causal modeling of fMRI data to investigate neural network dynamics underlying freezing-related handwriting problems and how these networks changed in response to visual cues. Twenty-seven non-freezers and ten freezers performed a pre-writing task with and without visual cues in the scanner with their right hand...
December 14, 2017: Journal of Neurology
Estela Baquedano, Lorena Torné, Pablo Caño, Pablo A Postigo
We investigated the fabrication of large-area (cm²) nanostructured glasses for solar cell modules with hydrophobic and hydrophilic properties using soft lithography and colloidal lithography. Both of these techniques entail low-cost and ease of nanofabrication. We explored the use of simple 1D and 2D nanopatterns (nanowires and nanocones) and the effect of introducing disorder in the nanostructures. We observed an increase in the transmitted light for ordered nanostructures with a maximum value of 99% for wavelengths >600 nm when ordered nanocones are fabricated on the two sides of the solar glass...
December 14, 2017: Nanomaterials
John Mair-Jenkins, Roberta Borges-Stewart, Caroline Harbour, Judith Cox-Rogers, Tim Dallman, Philip Ashton, Robert Johnston, Deborah Modha, Philip Monk, Richard Puleston
Following notification of a Salmonella enterica serovar Typhimurium gastroenteritis outbreak, we identified 82 cases linked to a restaurant with symptom onset from 12 February 2015 to 8 March 2016. Seventy-two cases had an isolate matching the nationally unique whole genome sequencing profile (single nucleotide polymorphism (SNP) address: Interviews established exposure to the restaurant and subsequent case-control analysis identified an association with eating carvery buffet food (adjusted odds ratios (AOR): 20...
December 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
Heegwang Kim, Jinho Park, Hasil Park, Joonki Paik
Recently, the stereo imaging-based image enhancement approach has attracted increasing attention in the field of video analysis. This paper presents a dual camera-based stereo image defogging algorithm. Optical flow is first estimated from the stereo foggy image pair, and the initial disparity map is generated from the estimated optical flow. Next, an initial transmission map is generated using the initial disparity map. Atmospheric light is then estimated using the color line theory. The defogged result is finally reconstructed using the estimated transmission map and atmospheric light...
December 9, 2017: Sensors
Zhuo Zhang, Fei Yu
As a high-precision angular sensor, the fiber optic gyroscope (FOG) usually shows high sensitivity to disturbances of the environmental temperature. The thermal performance of the FOG will be directly affected by the selection of adhesive for adhesion inside the fiber coil, however, the current research on this is very rare. This paper is focusing the question above; firstly, the influence mechanism of temperature and stress on the non-reciprocity phase difference of the fiber coil is analyzed, and a model of fiber coil thermal-induced drift error is built...
November 27, 2017: Optics Express
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