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https://www.readbyqxmd.com/read/29152977/local-disorder-and-tunable-luminescence-in-sr1-x-2al2-xsixo4-0-2-%C3%A2-x-%C3%A2-0-5-transparent-ceramics
#1
Alberto J Fernandez-Carrion, Kholoud Al Saghir, Emmanuel Veron, Ana I Becerro, Florence Porcher, Wolfgang Wisniewski, Guy Matzen, Franck Fayon, Mathieu Allix
Eu-doped Sr1-x/2Al2-xSixO4 (x = 0.2, 0.4, and 0.5) transparent ceramics have been synthesized by full and congruent crystallization from glasses prepared by aerodynamic levitation and laser-heating method. Structural refinements from synchrotron and neutron powder diffraction data show that the ceramics adopt a 1 × 1 × 2 superstructure compared to the SrAl2O4 hexagonal polymorph. While the observed superstructure reflections indicate a long-range ordering of the Sr vacancies in the structure, (29)Si and (27)Al solid-state NMR measurements associated with DFT computations reveal a significant degree of disorder in the fully polymerized tetrahedral network...
November 20, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29143321/interobserver-agreement-on-standardized-ultrasound-and-histopathologic-signs-for-the-prenatal-diagnosis-of-placenta-accreta-spectrum-disorder
#2
Nurit Zosmer, Eric Jauniaux, Catey Bunce, Jenie Panaiotova, Hizbullah Shaikh, Kypros H Nicholaides
OBJECTIVE: To evaluate interobserver agreement in assessment of ultrasound signs and histopathologic findings associated with placenta accreta spectrum (PAS) disorders. METHODS: A retrospective study was conducted using data for patients prenatally diagnosed with PAS disorders at a UK hospital between January 31, 2012, and March 30, 2017. Ultrasound images (including gray-scale and color Doppler imaging [CDI] parameters) and histopathologic slides were reviewed by two observers; the level of agreement was calculated...
November 16, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/29138127/exploring-working-relationships-in-mental-health-care-via-an-e-recovery-portal-qualitative-study-on-the-experiences-of-service-users-and-health-providers
#3
Monica Strand, Deede Gammon, Lillian Sofie Eng, Cornelia Ruland
BACKGROUND: The quality of working relationships between service users and health providers is fundamental in the processes of recovery in mental health. How Internet-based interventions will influence these relationships for persons with long-term care needs, and the measures that can be taken to maintain and enhance working relationships through Internet, is still not well understood. OBJECTIVE: The aim of this study was to gain insights into how service users and health providers experience their working relationships when they are offered the option of supplementing ongoing collaboration with an e-recovery portal...
November 14, 2017: JMIR Mental Health
https://www.readbyqxmd.com/read/29136923/a-high-sensitivity-biosensor-to-detect-the-presence-of-perfluorinated-compounds-in-environment
#4
Nunzio Cennamo, Luigi Zeni, Paolo Tortora, Maria Elena Regonesi, Alessandro Giusti, Maria Staiano, Sabato D'Auria, Antonio Varriale
A novel surface plasmon resonance (SPR) optical fiber biosensor, able to bind perfluorooctanoate and perfluorooctanesulfonate compounds, is presented. In the first step, an ad hoc antibody compound has been designed, produced and tested by ELISA, then, in the second step, the gold surface of a plastic optical fiber sensor has been derivatizated and functionalized with this new bio-receptor, able to bind target analytes with high affinity and selectivity. The experimental data have shown that the developed SPR optical fiber biosensor makes it possible to detect these compounds...
February 1, 2018: Talanta
https://www.readbyqxmd.com/read/29136373/photocontrol-of-antibacterial-activity-shifting-from-uv-to-red-light-activation
#5
Michael Wegener, Mickel J Hansen, Arnold J M Driessen, Wiktor Szymanski, Ben L Feringa
The field of photopharmacology aims to introduce smart drugs that, through the incorporation of molecular photoswitches, allow for the remote spatial and temporal control of bioactivity by light. This concept could be particularly beneficial in the treatment of bacterial infections, by reducing the systemic and environmental side-effects of antibiotics. A major concern in the realization of such light-responsive drugs is the wavelength of the light that is applied. Studies on the photocontrol of biologically active agents mostly rely on UV light, which is cytotoxic and poorly suited for tissue penetration...
November 14, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29122354/potentials-and-limitations-of-remote-fire-monitoring-in-protected-areas
#6
João Flávio Costa Dos Santos, Joyce Machado Nunes Romeiro, José Batuíra de Assis, Fillipe Tamiozzo Pereira Torres, José Marinaldo Gleriani
Protected areas (PAs) play an important role in maintaining the biodiversity and ecological processes of the site. One of the greatest challenges for the PA management in several biomes in the world is wildfires. The objective of this work was to evaluate the potentialities and limitations of the use of data obtained by orbital remote sensing in the monitoring fire occurrence in PAs. Fire Occurrence Records (FORs) were analyzed in Serra do Brigadeiro State Park, Minas Gerais, Brazil, from 2007 to 2015, using photo interpreted data from TM, ETM(+) and OLI sensors of the Landsat series and the Hot Spot Database (HSD) from the Brazilian Institute of Space Research - INPE...
November 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29116792/enantioselective-intermolecular-c-o-bond-formation-in-the-desymmetrization-of-diarylmethines-employing-a-guanidinylated-peptide-based-catalyst
#7
Alex J Chinn, Byoungmoo Kim, Yongseok Kwon, Scott J Miller
We report a series of enantioselective C-O bond cross-coupling reactions based on remote symmetry breaking processes in diarylmethine substrates. Key to the chemistry are multifunctional guanidinylated peptide-based ligands that allow highly selective, intermolecular Cu-catalyzed cross-coupling of phenolic nucleophiles. The scope of the process is explored, demonstrating efficiency for substrates with a range of electronic and steric perturbations to the nucleophile. Scope and limitations are also reported for variation of the diarylmethine...
November 8, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29113627/the-proportion-of-asymptomatic-infections-and-spectrum-of-disease-among-pregnant-women-infected-by-zika-virus-systematic-monitoring-in-french-guiana-2016
#8
Claude Flamand, Camille Fritzell, Séverine Matheus, Maryvonne Dueymes, Gabriel Carles, Anne Favre, Antoine Enfissi, Antoine Adde, Magalie Demar, Mirdad Kazanji, Simon Cauchemez, Dominique Rousset
Zika virus (ZIKV) infection has been associated with complications during pregnancy. Although the presence of symptoms might be a risk factor for complication, the proportion of ZIKV-infected pregnant women with symptoms remains unknown. Following the emergence of ZIKV in French Guiana, all pregnancies in the territory were monitored by RT-PCR and/or detection of ZIKV antibodies. Follow-up data collected during pregnancy monitoring interviews were analysed from 1 February to 1 June 2016. We enrolled 3,050 pregnant women aged 14-48 years and 573 (19%) had laboratory-confirmed ZIKV infection...
November 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/29102803/aggregating-polarizing-networking-the-evolution-of-cell-adhesion-codes
#9
REVIEW
Marcella Faria
Adhesion is a central mechanism in the development of multicellular life. It underlies cell movement, communication and differentiation. Remarkably, the presence of only three classes of interconnected molecules is sufficient to establish functional adhesive interactions between cells: Extracellular Matrix components (ECMs); Cell Adhesion Molecules (CAMs); and cytoskeleton microfilaments. In the present work, we shall dissect the nature and the dynamical interactions between these three classes of molecules as they appear in evolution, to postulate that their organization into an organic code sensu Barbieri(1) parallels the development of multicellularity...
November 1, 2017: Bio Systems
https://www.readbyqxmd.com/read/29082071/rapid-adaptive-remote-focusing-microscope-for-sensing-of-volumetric-neural-activity
#10
Mantas Žurauskas, Oliver Barnstedt, Maria Frade-Rodriguez, Scott Waddell, Martin J Booth
The ability to record neural activity in the brain of a living organism at cellular resolution is of great importance for defining the neural circuit mechanisms that direct behavior. Here we present an adaptive two-photon microscope optimized for extraction of neural signals over volumes in intact Drosophila brains, even in the presence of specimen motion. High speed volume imaging was made possible through reduction of spatial resolution while maintaining the light collection efficiency of a high resolution, high numerical aperture microscope...
October 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/29080961/can-tree-species-diversity-be-assessed-with-landsat-data-in-a-temperate-forest
#11
Maliheh Arekhi, Osman Yalçın Yılmaz, Hatice Yılmaz, Yaşar Feyza Akyüz
The diversity of forest trees as an indicator of ecosystem health can be assessed using the spectral characteristics of plant communities through remote sensing data. The objectives of this study were to investigate alpha and beta tree diversity using Landsat data for six dates in the Gönen dam watershed of Turkey. We used richness and the Shannon and Simpson diversity indices to calculate tree alpha diversity. We also represented the relationship between beta diversity and remotely sensed data using species composition similarity and spectral distance similarity of sampling plots via quantile regression...
October 28, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29072607/presence-of-legionella-spp-in-hot-water-networks-of-different-italian-residential-buildings-a-three-year-survey
#12
Michele Totaro, Paola Valentini, Anna Laura Costa, Lorenzo Frendo, Alessia Cappello, Beatrice Casini, Mario Miccoli, Gaetano Privitera, Angelo Baggiani
Although the European reports highlight an increase in community-acquired Legionnaires' disease cases, the risk of Legionella spp. in private houses is underestimated. In Pisa (Italy) we performed a three-year survey on Legionella presence in 121 buildings with an independent hot water production (IB); 64 buildings with a central hot water production (CB); and 35 buildings with a solar thermal system for hot water production (TB). From all the 220 buildings Legionella spp. was researched in two hot water samples collected either at the recirculation point or on the first floor and on the last floor, while the potable water quality was analysed in three cold water samples collected at the inlet from the aqueduct network, at the exit from the autoclave, and at the most remote tap...
October 26, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29063247/methodological-considerations-of-terrestrial-laser-scanning-for-vegetation-monitoring-in-the-sagebrush-steppe
#13
Kyle E Anderson, Nancy F Glenn, Lucas P Spaete, Douglas J Shinneman, David S Pilliod, Robert S Arkle, Susan K McIlroy, DeWayne R Derryberry
Terrestrial laser scanning (TLS) provides fast collection of high-definition structural information, making it a valuable field instrument to many monitoring applications. A weakness of TLS collections, especially in vegetation, is the occurrence of unsampled regions in point clouds where the sensor's line-of-sight is blocked by intervening material. This problem, referred to as occlusion, may be mitigated by scanning target areas from several positions, increasing the chance that any given area will fall within the scanner's line-of-sight from at least one position...
October 23, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/29061450/the-history-of-neurosurgery-in-the-hawaiian-islands
#14
REVIEW
Christian Swinney, William Obana
The field of neurosurgery has a rich and fascinating history. The development of the specialty in Hawaii has been particularly unique, given the state's remote location, indigenous population, and military presence. The life of Dr. Cloward, Hawaii's most noted neurosurgeon, has received some attention in the literature. However, a comprehensive review of this history, including the pre-Cloward and post-Cloward era, is lacking. Thus, this article will review and chronicle the development of neurosurgery in Hawaii with special attention to three topics: the traveling neurosurgeons of the early 20th century, such as Dr...
October 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/29060734/comparison-of-motion-based-analysis-to-thermal-based-analysis-of-thermal-video-in-the-extraction-of-respiration-patterns
#15
Stephanie L Bennett, Rafik Goubran, Frank Knoefel
Non-contact methods of extracting vital signals has become a popular area of research. This is likely due to the world's aging population and the increased need for long term and remote monitoring. This paper examines and compares the potential for one modality to capture a vital sign, specifically respiration, in the presence of signal abnormalities. This paper compares temperature based-methods to motion-based methods of extracting respiration rate from thermal video of a subject performing computationally difficult respiration tests...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29060007/musese-a-multisensor-armchair-for-unobtrusive-vital-sign-estimation-and-motion-artifact-analysis
#16
Christoph Hoog Antink, Steffen Leonhardt, Florian Schulz, Marian Walter
Unobtrusive vital sign estimation with sensors integrated into objects of everyday living can substantially advance the field of remote monitoring. At the same time, motion artifacts cause severe problems and have to be dealt with. Here, the fusion of multimodal sensor data is a promising approach. In this paper, we present an armchair equipped with capacitively coupled electrocardiogram, two types of ballistocardiographic sensors, photoplethysmographic and two high-frequency impedance sensors. In addition, a video-based sensor for motion analysis is integrated...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29046422/the-fate-of-non-selected-activity-in-saccadic-decisions-distinct-goal-related-and-history-related-modulation
#17
Geoffrey Mégardon, Petroc Sumner
The Global Effect (GE) traditionally refers to the tendency of effectors (e.g. hand, eyes) to first land in between two nearby stimuli - forming a unimodal distribution. By measuring a shift of this distribution, recent studies used the GE to assess the presence of decision-related inputs on the motor map for eye movements. However, this method cannot distinguish whether one stimulus is inhibited or the other is facilitated and could not detect situations where both stimuli are inhibited or facilitated. Here, we detect deviations in the bimodal distribution of landing positions for remote stimuli, and find that this bimodal GE reveals the presence, location and polarity (facilitation or inhibition) of history-related and goal-related modulation of the non-selected activity (e...
October 18, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29044918/supramolecular-recognition-allows-remote-site-selective-c-h-oxidation-of-methylenic-sites-in-linear-amines
#18
Giorgio Olivo, Giulio Farinelli, Alessia Barbieri, Osvaldo Lanzalunga, Stefano Di Stefano, Miquel Costas
Site-selective C-H functionalization of aliphatic alkyl chains stands as a longstanding challenge in oxidation catalysis, given the comparable relative reactivity of the different methylenes. Herein, we describe a supramolecular, bioinspired approach to address this challenge. We decorated a manganese complex, able to catalyze C(sp3)-H hydroxylation with H2O2, with a supramolecular receptor (an 18-benzocrown-6 ether) that binds ammonium substrates via hydrogen bonding. Reversible pre-association of protonated primary aliphatic amines with the crown ether thus selectively exposes only remote positions (C8 and C9) to the oxidizing unit, yielding the site-selective oxidation and overriding the intrinsic reactivity of C-H bonds...
October 17, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29042541/resonant-out-of-phase-fluorescence-microscopy-and-remote-imaging-overcome-spectral-limitations
#19
Jérôme Quérard, Ruikang Zhang, Zsolt Kelemen, Marie-Aude Plamont, Xiaojiang Xie, Raja Chouket, Insa Roemgens, Yulia Korepina, Samantha Albright, Eliane Ipendey, Michel Volovitch, Hanna L Sladitschek, Pierre Neveu, Lionel Gissot, Arnaud Gautier, Jean-Denis Faure, Vincent Croquette, Thomas Le Saux, Ludovic Jullien
We present speed out-of-phase imaging after optical modulation (OPIOM), which exploits reversible photoswitchable fluorophores as fluorescent labels and combines optimized periodic illumination with phase-sensitive detection to specifically retrieve the label signal. Speed OPIOM can extract the fluorescence emission from a targeted label in the presence of spectrally interfering fluorophores and autofluorescence. Up to four fluorescent proteins exhibiting a similar green fluorescence have been distinguished in cells either sequentially or in parallel...
October 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/29041889/-multifactorial-prognostication-of-remote-outcomes-in-patients-with-non-st-elevation-acute-coronary-syndrome
#20
V O Tsygankova, G N Lozhkina, H M Khasanova, D A Kuimov, I Y Ragino, N V Maksimov, I M Voevoda
AIM: Creation of a mathematical nonlinear regression model for prognostication of 1 year outcomes after non-ST elevation acute coronary syndrome (NSTE ACS) for optimization of rehabilitation, secondary prevention, and personalized approach to treatment. MATERIAL AND METHODS: We included in this study 135 patients with confirmed NSTE ACS (mean age 59.1±6.1 years, 94 men and 41 women) admitted to hospital No 1 in Novosibirsk during 2010. During hospitalization and 1 year after discharge these patients received standard medical therapy...
August 2017: Kardiologiia
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