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https://www.readbyqxmd.com/read/28943085/drosophila-spatiotemporally-integrates-visual-signals-to-control-saccades
#1
Jean-Michel Mongeau, Mark A Frye
Like many visually active animals, including humans, flies generate both smooth and rapid saccadic movements to stabilize their gaze. How rapid body saccades and smooth movement interact for simultaneous object pursuit and gaze stabilization is not understood. We directly observed these interactions in magnetically tethered Drosophila free to rotate about the yaw axis. A moving bar elicited sustained bouts of saccades following the bar, with surprisingly little smooth movement. By contrast, a moving panorama elicited robust smooth movement interspersed with occasional optomotor saccades...
September 15, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28941920/genomic-scores-are-independent-of-disease-volume-in-men-with-favorable-risk-prostate-cancer-implications-for-choosing-men-for-active-surveillance
#2
Yaw A Nyame, Dominic C Grimberg, Daniel J Greene, Karishma Gupta, Ganesh K Kartha, Ryan Berglund, Michael Gong, Andrew J Stephenson, Cristina Magi-Galluzzi, Eric A Klein
OBJECTIVE: To determine if disease volume at prostate biopsy correlates with genomic scores among men with favorable risk prostate cancer. METHODS: All men with NCCN very low (VLR) and low risk (LR) disease and OncotypeDx Prostate testing at our institution from 2013 to 2016 were identified. Volume of disease was characterized as percent of positive cores, number of cores with >50% involvement, largest involvement of any single core, and PSA density. Nonparametric testing was performed to compare the median genomic prostate score (GPS) and likelihood of favorable pathology (LFP) between quartiles of disease volume...
September 20, 2017: Journal of Urology
https://www.readbyqxmd.com/read/28939708/the-decisions-interventions-and-goals-in-implantable-cardioverter-defibrillator-therapy-dignity-pilot-study
#3
Daniel B Kramer, Daniel Habtemariam, Yaw Adjei-Poku, Michelle Samuel, Diane Engorn, Matthew R Reynolds, Susan L Mitchell
BACKGROUND: Implantable cardioverter-defibrillators (ICDs) are commonly implanted in older patients, including those with multiple comorbidities. There are few prospective studies assessing the clinical course and end-of-life circumstances for these patients. METHODS AND RESULTS: We prospectively followed 51 patients with ICDs for up to 18 months to longitudinally assess in terms of (1) advance care planning, (2) health status, (3) healthcare utilization, and (4) end-of-life circumstances through quarterly phone interviews and electronic medical record review...
September 22, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28936926/revisiting-the-continuing-bonds-theory-the-cultural-uniqueness-of-the-bei-dao-phenomenon-in-taiwanese-widows-widowers
#4
Wan-Lin Lee, Yi-Chen Hou, Yaw-Sheng Lin
In the present study, we used the phenomenological approach to rediscover the ontological meaning of relationships with the deceased in Taiwanese widows/widowers. We first revised the original Western definitions of grief, bereavement, and mourning to fit Taiwanese culture. We used the word bei dao to indicate the mixed nature of grief and mourning in the Taiwanese bereavement process. Then we reanalyzed data from a previous study, which was conducted in 2006. In the previous qualitative research, each subject was interviewed 3 to 4 times in the mourning state over an 18-month interval that began at the point of the spouse's death...
October 2017: Qualitative Health Research
https://www.readbyqxmd.com/read/28933756/a-disposable-amperometric-sensor-based-on-high-performance-pedot-pss-ionic-liquid-nanocomposite-thin-film-modified-screen-printed-electrode-for-the-analysis-of-catechol-in-natural-water-samples
#5
Francis D Krampa, Yaw Aniweh, Gordon A Awandare, Prosper Kanyong
A conducting polymer-based composite material of poly(3,4-ethylenedioxythiophene) (PEDOT): poly(4-styrenesulfonate) (PSS) doped with different percentages of a room temperature ionic liquid (IL), 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF₄]), was prepared and a very small amount of the composite (2.0 µL) was drop-coated on the working area of a screen-printed carbon electrode (SPCE). The SPCE, modified with PEDOT:PSS/IL composite thin-film, was characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), profilometry and sessile contact angle measurements...
July 26, 2017: Sensors
https://www.readbyqxmd.com/read/28927995/measuring-system-for-an-attitude-angle-of-a-denture-using-an-inertial-measurement-unit
#6
Toshiaki Sekita, Syuhei Takeuchi, Syunsuke Minakuchi
PURPOSE: The aim of this study was to assemble and verify a measuring system for 3-D movements (attitude angle) of the denture during function. METHODS: For the calibration test, the sensor was fixed at the center of the rotary table. Operation and stopping of the rotary table were repeated 8 times, and the direction of rotation was reversed in the middle. The amount of rotation was 1.2 and 2.4°. As a pilot clinical trial, the attitude angles of three upper complete dentures during tapping were measured by this system...
September 15, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28926040/the-relationship-between-the-conformational-degree-of-freedom-of-template-containing-threads-and-slippage-in-the-formation-of-2-rotaxane-building-blocks
#7
B Riss-Yaw, C Clavel, Ph Laurent, F Coutrot
A straightforward slippage strategy has been used for the synthesis of three [2]rotaxane building blocks that all contain an ammonium template for the dibenzo-24-crown-8 macrocycle and an N-hydroxysuccinimide end. The kinetic rate of the slipping-on process proved to be highly dependent on both the length and flexibility of the thread.
September 19, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28925968/recent-progress-in-the-development-of-diagnostic-tests-for-malaria
#8
REVIEW
Francis D Krampa, Yaw Aniweh, Gordon A Awandare, Prosper Kanyong
The impact of malaria on global health has continually prompted the need to develop effective diagnostic strategies. In malaria endemic regions, routine diagnosis is hampered by technical and infrastructural challenges to laboratories. These laboratories lack standard facilities, expertise or diagnostic supplies; thus, therapy is administered based on clinical or self-diagnosis. There is the need for accurate diagnosis of malaria due to the continuous increase in the cost of medication, and the emergence and spread of drug resistant strains...
September 19, 2017: Diagnostics
https://www.readbyqxmd.com/read/28920135/asia-s-first-transapical-transcatheter-mitral-valve-in-ring-implantation
#9
Jia Lin Soon, Kay Woon Ho, See Hooi Ewe, Philipp Blanke, Tar Toong Chao, Swee Yaw Tan, Soo Teik Lim, Yoong Kong Sin
No abstract text is available yet for this article.
August 2017: Annals of the Academy of Medicine, Singapore
https://www.readbyqxmd.com/read/28918657/direct-oral-anticoagulant-use-in-atypical-thrombosis-related-conditions
#10
Clement Chang, Mario Hoyos, Yaw Owusu, Hazem Elewa
OBJECTIVE: To review the published literature for evidence of the efficacy and safety of direct oral anticoagulants (DOACs) when used in the management of atypical thrombosis-related conditions. DATA SOURCES: A comprehensive MEDLINE database search (1948 to July 2017) and EMBASE search (1980 to July 2017) were conducted using the search terms direct oral anticoagulant in combination with acute coronary syndrome (ACS), antiphospholipid antibody syndrome (APLAS), and cancer-associated thrombosis (CAT)...
September 1, 2017: Annals of Pharmacotherapy
https://www.readbyqxmd.com/read/28914895/experimental-generation-of-discrete-ultraviolet-wavelength-by-cascaded-intermodal-four-wave-mixing-in-a-multimode-photonic-crystal-fiber
#11
Jinhui Yuan, Zhe Kang, Feng Li, Xianting Zhang, Chao Mei, Guiyao Zhou, Xinzhu Sang, Qiang Wu, Binbin Yan, Xian Zhou, Kangping Zhong, Kuiru Wang, Chongxiu Yu, Gerald Farrell, Chao Lu, Hwa Yaw Tam, P K A Wai
In this Letter, we demonstrate experimentally for the first time, to the best of our knowledge, discrete ultraviolet (UV) wavelength generation by cascaded intermodal FWM when femtosecond pump pulses at 800 nm are launched into the deeply normal dispersion region of the fundamental guided mode of a multimode photonic crystal fiber (MPCF). For pump pulses at average input powers of Pav=450, 550, and 650 mW, the first anti-Stokes waves are generated at the visible wavelength of 538.1 nm through intermodal phase matching between the fundamental and second-order guided mode of the MPCF...
September 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28914779/simultaneous-recognition-and-relative-pose-estimation-of-3d-objects-using-4d-orthonormal-moments
#12
Sergio Dominguez
Both three-dimensional (3D) object recognition and pose estimation are open topics in the research community. These tasks are required for a wide range of applications, sometimes separately, sometimes concurrently. Many different algorithms have been presented in the literature to solve these problems separately, and some to solve them jointly. In this paper, an algorithm to solve them simultaneously is introduced. It is based on the definition of a four-dimensional (4D) tensor that gathers and organizes the projections of a 3D object from different points of view...
September 15, 2017: Sensors
https://www.readbyqxmd.com/read/28902149/highly-portable-sensor-based-system-for-human-fall-monitoring
#13
Aihua Mao, Xuedong Ma, Yinan He, Jie Luo
Falls are a very dangerous situation especially among elderly people, because they may lead to fractures, concussion, and other injuries. Without timely rescue, falls may even endanger their lives. The existing optical sensor-based fall monitoring systems have some disadvantages, such as limited monitoring range and inconvenience to carry for users. Furthermore, the fall detection system based only on an accelerometer often mistakenly determines some activities of daily living (ADL) as falls, leading to low accuracy in fall detection...
September 13, 2017: Sensors
https://www.readbyqxmd.com/read/28894360/the-evaluation-of-%C3%AE-adrenoceptor-blocking-agents-in-patients-with-copd-and-congestive-heart-failure-a-nationwide-study
#14
Kuang-Ming Liao, Tien-Yu Lin, Yaw-Bin Huang, Chen-Chun Kuo, Chung-Yu Chen
OBJECTIVE: β-Blockers are safe and improve survival in patients with both congestive heart failure (CHF) and COPD. However, the superiority of different types of β-blockers is still unclear among patients with CHF and COPD. The association between β-blockers and CHF exacerbation as well as COPD exacerbation remains unclear. The objective of this study was to compare the outcome of different β-blockers in patients with concurrent CHF and COPD. PATIENTS AND METHODS: We used the National Health Insurance Research Database in Taiwan to conduct a retrospective cohort study...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28892006/localization-of-ferromagnetic-target-with-three-magnetic-sensors-in-the-movement-considering-angular-rotation
#15
Xiang Gao, Shenggang Yan, Bin Li
Magnetic detection techniques have been widely used in many fields, such as virtual reality, surgical robotics systems, and so on. A large number of methods have been developed to obtain the position of a ferromagnetic target. However, the angular rotation of the target relative to the sensor is rarely studied. In this paper, a new method for localization of moving object to determine both the position and rotation angle with three magnetic sensors is proposed. Trajectory localization estimation of three magnetic sensors, which are collinear and noncollinear, were obtained by the simulations, and experimental results demonstrated that the position and rotation angle of ferromagnetic target having roll, pitch or yaw in its movement could be calculated accurately and effectively with three noncollinear vector sensors...
September 11, 2017: Sensors
https://www.readbyqxmd.com/read/28890907/functional-ex-vivo-imaging-of-arterial-cellular-recruitment-and-lipid-extravasation
#16
Emiel P C van der Vorst, Sanne L Maas, Almudena Ortega-Gomez, Jeroen M M Hameleers, Mariaelvy Bianchini, Yaw Asare, Oliver Soehnlein, Yvonne Döring, Christian Weber, Remco T A Megens
The main purpose of this sophisticated and highly versatile method is to visualize and quantify structural vessel wall properties, cellular recruitment, and lipid/dextran extravasation under physiological conditions in living arteries. This will be of interest for a broad range of researchers within the field of inflammation, hypertension, atherosclerosis, and even the pharmaceutical industry. Currently, many researchers are using in vitro techniques to evaluate cellular recruitment, like transwell or flow chamber systems with cultured cells, with unclear physiological comparability...
June 20, 2017: Bio-protocol
https://www.readbyqxmd.com/read/28887110/percutaneous-decommissioning-of-left-ventricular-assist-device
#17
Jia-Lin Soon, Ju-Le Tan, Choon-Pin Lim, Teing-Ee Tan, Swee-Yaw Tan, Ka-Lee Kerk, Kheng-Leng David Sim, Cumaraswamy Sivathasan
BACKGROUND: The Left Ventricular Assist Device (LVAD) has revolutionised our treatment of advanced stage heart failure, giving debilitated patients a new lease on life. A small proportion of these LVAD patients can be bridged-to-recovery. The identification of these patients and decision to wean, however, can be challenging. METHODS: The need to fully explant the device upon recovery has evolved to a minimalist approach aiming to avoid injury to the 'recovered' heart...
August 19, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28886021/complete-genome-sequences-of-two-strains-of-treponema-pallidum-subsp-pertenue-from-ghana-africa-identical-genome-sequences-in-samples-isolated-more-than-7-years-apart
#18
Michal Strouhal, Lenka Mikalová, Pavla Havlíčková, Paolo Tenti, Darina Čejková, Ivan Rychlík, Sylvia Bruisten, David Šmajs
BACKGROUND: Treponema pallidum subsp. pertenue (TPE) is the causative agent of yaws, a multi-stage disease, endemic in tropical regions of Africa, Asia, Oceania, and South America. To date, four TPE strains have been completely sequenced including three TPE strains of human origin (Samoa D, CDC-2, and Gauthier) and one TPE strain (Fribourg-Blanc) isolated from a baboon. All TPE strains are highly similar to T. pallidum subsp. pallidum (TPA) strains. The mutation rate in syphilis and related treponemes has not been experimentally determined yet...
September 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28872747/formation-of-stable-tin-perovskites-co-crystallized-with-three-halides-for-carbon-based-mesoscopic-lead-free-perovskite-solar-cells
#19
Eric Wei-Guang Diau, Cheng-Min Tsai, Nayantara Mohanta, Chi-Yung Wang, Yu-Pei Lin, Yaw-Wen Yang, Chien-Lung Wang, Chen-Hsiung Hung
We synthesized and characterized methylammonium (MA) mixed tri-halide tin perovskites (MASnIBr2-xClx) for carbon-based mesoscopic solar cells free of lead and hole-transporting layers. Varied SnCl2/SnBr2 ratios yielded tin perovskites with three halides (I, Br and Cl) co-crystallized inside the tin-perovskite crystals according to the stoichiometric ratios of the precursors for x ≤ 0.5. When the SnCl2 proportion was equal to or greater than 50 % (x ≥ 1), phase separation occurred to generate MASnI3-yBry and MASnCl3-zBrz according to the stoichiometric proportions of their precursors, confirmed with the corresponding XRD analysis...
September 5, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28867315/soluble-fms-like-tyrosine-kinase-1-sflt-1-and-risk-of-cerebral-vasospasm-after-aneurysmal-subarachnoid-hemorrhage
#20
Christoph J Griessenauer, Michelle H Chua, Khalid A Hanafy, Yaw Tachie Baffour, Ruiya Chen, Robert H LeBlanc, Apar S Patel, Mohamed Salem, S Ananth Karumanchi, Dihua Xu, Ravi Thadhani, Christopher S Ogilvy, Ajith J Thomas
INTRODUCTION: The molecular mechanisms underlying cerebral vasospasm and delayed cerebral ischemia (DCI) after aneurysmal subarachnoid hemorrhage (aSAH) are incompletely understood. We hypothesized that circulating anti-angiogenic factors, such as soluble Fms-like tyrosine kinase-1 (sFlt-1) and soluble transforming growth factor β (TGFβ) co-receptor, soluble endoglin (sEng), are important markers of their pathophysiology. METHODS: We performed a prospective study in aSAH patients and measured cerebrospinal fluid (CSF) and serum levels of sFlt-1 and sEng on post-bleed day 1 and 6 and correlated levels with incidence and severity of cerebral vasospasm and DCI...
August 31, 2017: World Neurosurgery
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