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https://www.readbyqxmd.com/read/28930156/giant-strain-and-induced-ferroelectricity-in-amorphous-batio%C3%A2-films-under-poling
#1
Pegah Mirzadeh Vaghefi, Ali Baghizadeh, Armando A C S Lourenço, Vitor S Amaral, Andre L Kholkin
We report an effect of giant surface modification of a 5.6 nm thick BaTiO₃ film grown on Si (100) substrate under poling by conductive tip of a scanning probe microscope (SPM). The surface can be locally elevated by about 9 nm under -20 V applied during scanning, resulting in the maximum strain of 160%. The threshold voltage for the surface modification is about 12 V. The modified topography is stable enough with time and slowly decays after poling with the rate ~0.02 nm/min. Strong vertical piezoresponse after poling is observed, too...
September 20, 2017: Materials
https://www.readbyqxmd.com/read/28917192/mass-loading-and-emission-of-thirty-seven-pharmaceuticals-in-a-typical-municipal-wastewater-treatment-plant-in-hunan-province-southern-china
#2
Huiju Lin, Haipu Li, Leilei Chen, Lei Li, Ling Yin, Hsiaowan Lee, Zhaoguang Yang
The occurrence, fate, mass loading and environmental emission of 37 pharmaceuticals were studied through an integrated approach involving both dissolved and adsorbed phase at a typical wastewater treatment plant in Hunan Province, Southern China. The results displayed the prevalence of 24 and 23 compounds in dissolved phase of influent and effluent, respectively. Fourteen compounds were found adsorbed onto sludge with a mean concentration ranging from 0.85 to 2900μg/kg dry weight. Twelve compounds exhibited high adsorption potential onto suspended particulate matter (SPM) with a mean fraction ranging from 8...
September 13, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28889190/anti-apoptotic-role-of-spermine-against-lead-and-or-gamma-irradiation-induced-hepatotoxicity-in-male-rats
#3
Rasha Abu-Khudir, Mahmoud E Habieb, Marwa A Mohamed, Asrar M Hawas, Tarek M Mohamed
Exposure to either lead (Pb) or γ-irradiation (IR) results in oxidative stress in biological systems. Herein, we explored the potential anti-apoptotic effect of spermine (Spm) against lead and/or γ-irradiation-induced hepatotoxicity in male albino rats. Rats were divided into eight experimental groups of ten rats each: groups including negative control, whole body γ-irradiated (6 Gray (Gy)), lead acetate (PbAct) trihydrate orally administered (75 mg/kg bw ≡ 40 mg/kg bw Pb for 14 consecutive days), and Spm intraperitoneally dosed (10 mg/kg bw for 14 consecutive days) rats and groups subjected to combinations of Pb + IR, Spm + IR, Spm + Pb, and Spm + Pb followed by IR on day 14 (Spm + Pb + IR)...
September 9, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28888906/the-comparison-of-ground-reaction-forces-and-lower-limb-muscles-correlation-and-activation-time-delay-between-forward-and-backward-walking
#4
Mohammadreza Mahaki, Gustavo Souto De Sá E Souza, Raghad Mimar, Marcus Fraga Vieira
This study aimed to compare the ground reaction forces (GRF) and lower limb muscles correlation and activation time delay between Forward (FW) and Backward (BW) walking. Twenty-four male students participated in this research. Electromyogram activities of gluteus medius, biceps femoris, medial gastrocnemius, soleus and anterior tibialis muscles along with GRFs were measured. Each participant performed two FW and two BW trials bare foot. Statistical parametric mapping (SPM) analysis was performed over anterior-posterior and vertical GRFs time series...
September 6, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28887458/increased-15-pgdh-expression-leads-to-dysregulated-resolution-responses-in-stromal-cells-from-patients-with-chronic-tendinopathy
#5
Stephanie G Dakin, Lucy Ly, Romain A Colas, Udo Oppermann, Kim Wheway, Bridget Watkins, Jesmond Dalli, Andrew J Carr
The mechanisms underpinning the failure of inflammation to resolve in diseased musculoskeletal soft tissues are unknown. Herein, we studied bioactive lipid mediator (LM) profiles of tendon-derived stromal cells isolated from healthy donors and patients with chronic tendinopathy. Interleukin(IL)-1β treatment markedly induced prostaglandin biosynthesis in diseased compared to healthy tendon cells, and up regulated the formation of several pro-resolving mediators including 15-epi-LXA4 and MaR1. Incubation of IL-1β stimulated healthy tendon cells with 15-epi-LXA4 or MaR1 down-regulated PGE2 and PGD2 production...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28886729/evaluation-of-xpert-mtb-rif-testing-for-rapid-diagnosis-of-childhood-pulmonary-tuberculosis-in-children-by-xpert-mtb-rif-testing-of-stool-samples-in-a-low-resource-setting
#6
Zahra Hasan, Sadia Shakoor, Fehmina Arif, Aisha Mehnaz, Alnoor Akber, Marium Haider, Akbar Kanji, Rumina Hasan
OBJECTIVE: Children with tuberculosis (TB) remain underdiagnosed due to difficulty in testing for Mycobacterium tuberculosis (MTB) infection. We evaluated the Xpert MTB/RIF assay for respiratory and stool testing in children for pulmonary TB through a cross-sectional study at tertiary care facilities in Karachi, Pakistan. Fifty children aged 0-15 years screened by a modified Kenneth-Jones (KJ) score were included. Mycobacterial culture of respiratory samples was the microbiological standard against stool Xpert TB results...
September 8, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28886545/occurrence-and-distribution-of-marine-natural-organic-pollutants-lipophilic-marine-algal-toxins-in-the-yellow-sea-and-the-bohai-sea-china
#7
Junhui Chen, Tongzhu Han, Xiaotong Li, Xiuping He, Yanlong Wang, Farong Chen, Xincheng Song, Deshan Zhou, Xiaoru Wang
For the first time, the composition, concentration and distribution characteristics of typical lipophilic marine algal toxins (LMATs) are investigated in surface seawater, suspended particulate matter (SPM) and sediments from the Yellow Sea and the Bohai Sea, China. Pectenotoxin-2 (PTX2) and okadaic acid (OA) were detected in offshore surface seawater samples (n=67) of the Yellow and Bohai Seas, and PTX2 was found in higher concentrations than OA. The concentrations of PTX2 were between 0.49 and 14.14ng/L. OA, dinophysistoxin-1(DTX1), PTX2 and gymnodimine (GYM) were detected in the nearshore surface seawater samples (n=20) of the Haizhou Bay of the Yellow Sea...
September 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28885719/post-transplant-consolidation-plus-lenalidomide-maintenance-vs-lenalidomide-maintenance-alone-in-multiple-myeloma-a-systematic-review
#8
REVIEW
Fatimah Al-Ani, Martha Louzada
BACKGROUND: In newly diagnosed multiple myeloma (NDMM), autologous stem cell transplantation (ASCT) remains the standard approach for transplant-eligible patients. To control the inevitable relapse, post-transplant consolidation/maintenance strategies are commonly used. However, the benefit of post-transplant consolidation is still uncertain. METHOD: We conducted a systematic review of phase II/III studies to compare the efficacy of post-ASCT consolidation plus lenalidomide maintenance (CON+LEN) vs...
September 8, 2017: European Journal of Haematology
https://www.readbyqxmd.com/read/28880891/altered-right-anterior-insular-connectivity-and-loss-of-associated-functions-in-adolescent-chronic-fatigue-syndrome
#9
Laura Anne Wortinger, Merete Glenne Øie, Tor Endestad, Vegard Bruun Wyller
Impairments in cognition, pain intolerance, and physical inactivity characterize adolescent chronic fatigue syndrome (CFS), yet little is known about its neurobiology. The right dorsal anterior insular (dAI) connectivity of the salience network provides a motivational context to stimuli. In this study, we examined regional functional connectivity (FC) patterns of the right dAI in adolescent CFS patients and healthy participants. Eighteen adolescent patients with CFS and 18 aged-matched healthy adolescent control participants underwent resting-state functional magnetic resonance imaging...
2017: PloS One
https://www.readbyqxmd.com/read/28878243/the-environmental-impacts-of-one-of-the-largest-tailing-dam-failures-worldwide
#10
Vanessa Hatje, Rodrigo M A Pedreira, Carlos Eduardo de Rezende, Carlos Augusto França Schettini, Gabriel Cotrim de Souza, Danieli Canaver Marin, Peter Christian Hackspacher
The impacts of the SAMARCO iron tailing spill along more than 650 km, between the dam and the plume of the Doce River in the Atlantic, were assessed by the determination of toxic metals. The tailing spill caused a substantial increase in suspended sediment loads (up to 33,000 mg L(-1)), in addition to large depositions of waste along the Doce basin. The highest estimated transport of dissolved metals was observed for Fe (58.8 μg s(-1)), Ba (37.9 μg s(-1)) and Al (25.0 μg s(-1)). Sediments reached the highest enrichment factors (EFs) for Hg (4,234), Co (133), Fe (43), and Ni (16), whereas As (55), Ba (64), Cr (16), Cu (17), Mn (41), Pb (38) and Zn (82) highest EFs were observed for suspended particulate matter (SPM)...
September 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28877218/role-of-interoceptive-accuracy-in-topographical-changes-in-emotion-induced-bodily-sensations
#11
Won-Mo Jung, Yeonhee Ryu, Ye-Seul Lee, Christian Wallraven, Younbyoung Chae
The emotion-associated bodily sensation map is composed of a specific topographical distribution of bodily sensations to categorical emotions. The present study investigated whether or not interoceptive accuracy was associated with topographical changes in this map following emotion-induced bodily sensations. This study included 31 participants who observed short video clips containing emotional stimuli and then reported their sensations on the body map. Interoceptive accuracy was evaluated with a heartbeat detection task and the spatial patterns of bodily sensations to specific emotions, including anger, fear, disgust, happiness, sadness, and neutral, were visualized using Statistical Parametric Mapping (SPM) analyses...
2017: PloS One
https://www.readbyqxmd.com/read/28869213/two-probe-stm-experiments-at-the-atomic-level
#12
Marek Kolmer, Piotr Olszowski, Rafal Zuzak, Szymon Godlewski, Christian Joachim, Marek Szymonski
Direct characterization of planar atomic or molecular scale devices and circuits on a supporting surface by multi-probe measurements requires unprecedented stability of single atom contacts and manipulation of scanning probes over large, nanometers scale area with atomic precision. In this work, we describe the full methodology behind atomically defined two-probe scanning tunneling microscopy (STM) experiments performed on a model system: dangling bond dimer wire supported on hydrogenated germanium (001) surface...
September 4, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28860982/using-large-scale-statistical-chinese-brain-template-chinese2020-in-popular-neuroimage-analysis-toolkits
#13
Lin Shi, Peipeng Liang, Yishan Luo, Kai Liu, Vincent C T Mok, Winnie C W Chu, Defeng Wang, Kuncheng Li
Given that the morphology of Chinese brains statistically differs from that of Caucasian, there is an urgent need to develop a Chinese brain template for neuroimaging studies in Chinese populations. Based on a multi-center dataset, we developed a statistical Chinese brain template, named as Chinese2020 (Liang et al., 2015). This new Chinese brain atlas has been validated in brain normalization and segmentation for anatomical Magnetic Resonance Imaging (MRI) studies, and is publicly available at http://www.chinese-brain-atlases...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28852394/effects-of-visual-information-regarding-tactile-stimulation-on-the-somatosensory-cortical-activation-a-functional-mri-study
#14
Hyeok Gyu Kwon, Sung Ho Jang, Mi Young Lee
Many studies have investigated the evidence for tactile and visual interactive responses to activation of various brain regions. However, few studies have reported on the effects of visuo-tactile multisensory integration on the amount of brain activation on the somatosensory cortical regions. The aim of this study was to examine whether coincidental information obtained by tactile stimulation can affect the somatosensory cortical activation using functional MRI. Ten right-handed healthy subjects were recruited for this study...
July 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28847102/the-effect-of-nanoparticles-and-humic-acid-on-technology-critical-element-concentrations-in-aqueous-solutions-with-soil-and-sand
#15
Zane Stepka, Ishai Dror, Brian Berkowitz
As a consequence of their growing use in electronic and industrial products, increasing amounts of technology critical elements (TCEs) are being released to the environment. Currently little is known about the fate of many of these elements. Initial research on their potential environmental impact identifies TCEs as emerging contaminants. TCE movement in the environment is often governed by water systems. Research on "natural" waters so far demonstrates that TCEs tend to be associated with suspended particulate matter (SPM), which influences TCE aqueous concentrations (here: concentration of TCEs in dissolved form and attached to SPM) and transport...
August 23, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28840461/simultaneous-bold-detection-and-incomplete-fmri-data-reconstruction
#16
Saideh Ferdowsi, Vahid Abolghasemi
The problem of simultaneous blood oxygenation level dependent (BOLD) detection and data completion is addressed in this paper. It is assumed that a set of fMRI data with significant number of missing samples is available and the aim is to recover those samples with least possible quality degradation. At the same time, BOLD should be detected. We propose a new cost function comprising both BOLD detection and data reconstruction terms. A solution based on singular value thresholding and sparsity-inducing approach is proposed...
August 24, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28826923/risk-assessment-and-seasonal-variation-of-heavy-metals-in-settling-particulate-matter-spm-from-a-typical-southern-chinese-mariculture-base
#17
Yang-Guang Gu, Jun Ouyang, Hong An, Shi-Jun Jiang, Hong-Qu Tang
Settling particulate matter (SPM) samples were collected monthly during a 21-month-long (April 2014 to December 2015) monitoring program from a fish cage and a large seaweed (Gracilaria lemaneiformis) cultivation in a typical mariculture base in eastern coast of Guangdong Province, South China. The concentrations of eight heavy metals (Pb, Cr, Ni, Cu, Zn, Co, V and Mn) showed a clear seasonality with relatively higher levels in the rainy season for most metals. In addition, five metals (Pb, Cr, Ni, Cu and Zn) showed slightly higher concentrations in the fish cage than in the large seaweed cultivation...
August 18, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28826823/medication-use-in-long-term-survivors-from-the-monica-kora-myocardial-infarction-registry
#18
Ute Amann, Inge Kirchberger, Margit Heier, Christian Thilo, Bernhard Kuch, Christa Meisinger
BACKGROUND: Prior studies reported high guideline adherence for secondary prevention medications (SPM) at hospital discharge in patients with acute myocardial infarction (AMI). Less is known about medication use in long-term AMI survivors. METHODS: Of the 2077 registered persons with an AMI between 2000 and 2008 who responded to a postal follow-up survey in 2011, 1311 men and 356 women, aged between 34.4 and 84.9years, reported medication intake 7days prior to the survey...
August 18, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28815856/molecular-dynamics-insights-into-polyamine-dna-binding-modes-implications-for-cross-link-selectivity
#19
Emmanuelle Bignon, Chen-Hui Chan, Christophe Morell, Antonio Monari, Jean-Luc Ravanat, Elise Dumont
Biogenic polyamines, which play a role in DNA condensation and stabilization, are ubiquitous and are found at millimolar concentration in the nucleus of eukaryotic cells. The interaction modes of three polyamines-putrescine (Put), spermine (Spm), and spermidine (Spd)-with a self-complementary 16 base pair (bp) duplex, are investigated by all-atom explicit-solvent molecular dynamics. The length of the amine aliphatic chain leads to a change of the interaction mode from minor groove binding to major groove binding...
August 16, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28815369/suspended-particulate-matter-collection-methods-influence-the-quantification-of-polycyclic-aromatic-compounds-in-the-river-system
#20
Fayez Abuhelou, Laurence Mansuy-Huault, Catherine Lorgeoux, Delphine Catteloin, Valéry Collin, Allan Bauer, Hussein Jaafar Kanbar, Renaud Gley, Luc Manceau, Fabien Thomas, Emmanuelle Montargès-Pelletier
In this study, we compared the influence of two different collection methods, filtration (FT) and continuous flow field centrifugation (CFC), on the concentration and the distribution of polycyclic aromatic compounds (PACs) in suspended particulate matter (SPM) occurring in river waters. SPM samples were collected simultaneously with FT and CFC from a river during six sampling campaigns over 2 years, covering different hydrological contexts. SPM samples were analyzed to determine the concentration of PACs including 16 polycyclic aromatic hydrocarbons (PAHs), 11 oxygenated PACs (O-PACs), and 5 nitrogen PACs (N-PACs)...
August 16, 2017: Environmental Science and Pollution Research International
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