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https://www.readbyqxmd.com/read/28432904/optimising-multi-frame-adf-stem-for-high-precision-atomic-resolution-strain-mapping
#1
Lewys Jones, Sigurd Wenner, Magnus Nord, Per Harald Ninive, Ole Martin Løvvik, Randi Holmestad, Peter D Nellist
Annular dark-field scanning transmission electron microscopy is a powerful tool to study crystal defects at the atomic scale but historically single slow-scanned frames have been plagued by low-frequency scanning-distortions prohibiting accurate strain mapping at atomic resolution. Recently, multi-frame acquisition approaches combined with post-processing have demonstrated significant improvements in strain precision, but the optimum number of frames to record has not been explored. Here we use a non-rigid image registration procedure before applying established strain mapping methods...
April 15, 2017: Ultramicroscopy
https://www.readbyqxmd.com/read/28432449/enteroparasitoses-and-toxocarosis-affecting-children-from-mar-del-plata-city-argentina
#2
Carla Lavallén, Beatriz Brignani, Karina Riesgo, Amalia Rojas, Gabriela Colace, Martín Biscaychipi, Estela Chicote, Cristian Giuntini, Mariela Kifer, María Eugenia Del Río, Guillermo Denegri, Marcela Dopchiz
This study evaluated the existence of enteroparasitoses and toxocarosis in children of peripheral (PC) and urban communities (UC) from Mar del Plata city (Argentina) and their associations with socio-environmental conditions. A Parasite Vulnerability Index (PVI) was elaborated using variables such as overcrowding, floor type, drinking water source, wastewater disposal, solid waste disposal, presence of animals and schooling level. The PC evidenced statistically significant higher frequencies of families with high (38...
April 21, 2017: EcoHealth
https://www.readbyqxmd.com/read/28432417/exploring-the-possibility-of-a-retrograde-embolism-pathway-from-the-facial-artery-to-the-ophthalmic-artery-system-in-vivo
#3
Hui Zheng, Lihong Qiu, Zonghui Liu, Yingjun Su, Xinyuan Pan, Sha Liu, Chenggang Yi
BACKGROUND: Blindness caused by soft tissue fillers is an extremely low-probability event, but it results in great concern because of its devastating consequences. Currently, the mechanism of an embolism is usually considered to be an accidental injection of fillers into the blood vessels of the face, such as a facial artery, and then retrograding into the ophthalmic artery system, which causes retinal ischemic necrosis. In addition, previous studies have shown that there are anastomoses between facial arteries and branches of the ophthalmic artery in cadavers...
April 21, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28432353/severe-hearing-loss-and-outer-hair-cell-death-in-homozygous-foxo3-knockout-mice-after-moderate-noise-exposure
#4
Felicia Gilels, Stephen T Paquette, Holly J Beaulac, Anwen Bullen, Patricia M White
Noise induced hearing loss (NIHL) is a disease that affects millions of Americans. Identifying genetic pathways that influence recovery from noise exposure is an important step forward in understanding NIHL. The transcription factor Foxo3 integrates the cellular response to oxidative stress and plays a role in extending lifespan in many organisms, including humans. Here we show that Foxo3 is required for auditory function after noise exposure in a mouse model system, measured by ABR. Absent Foxo3, outer hair cells are lost throughout the middle and higher frequencies...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28432306/simple-rectangular-gratings-as-a-near-field-anti-reflection-pattern-for-gasb-tpv-cells
#5
Haitong Yu, Dong Liu, Zhen Yang, Yuanyuan Duan
We show theoretically that 2D rectangular gratings on the surface of GaSb can serve as an "anti-reflection" pattern for nano-gap thermophotovoltaic (TPV) devices, which significantly enhances near-field radiative flux from the emitter to a GaSb cell, thus improving output power and conversion efficiency. The system in this study is a 200-nm gap TPV power generation system with a planar infrared plasmonic emitter and GaSb cell. Rigorous coupled-wave analysis is used to calculate the spectral near-field radiative flux involving periodic structures...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28432140/visually-evoked-3-5-hz-membrane-potential-oscillations-reduce-the-responsiveness-of-visual-cortex-neurons-in-awake-behaving-mice
#6
Michael C Einstein, Pierre-Olivier Polack, Duy T Tran, Peyman Golshani
Low frequency membrane potential (Vm) oscillations were once thought to only occur in sleeping and anesthetized states. Recently, low frequency Vm oscillations have been described in inactive awake animals, but it is unclear if they shape sensory processing in neurons and whether they occur during active awake behavioral states. To answer these questions, we performed two-photon guided whole-cell Vm recordings from primary visual cortex layer 2/3 excitatory and inhibitory neurons in awake mice during passive visual stimulation and performance of visual and auditory discrimination tasks...
April 21, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28431990/a-common-polymorphism-decreases-lrp1-mrna-stability-and-is-associated-with-increased-plasma-factor-viii-levels
#7
Jiann-Der Lee, Kuang-Ming Hsiao, Pey-Jium Chang, Chih-Cheng Chen, Ya-Wen Kuo, Yen-Chu Huang, Huan-Lin Hsu, Ya-Hui Lin, Chih-Ying Wu, Ying-Chih Huang, Meng Lee, Chia-Yu Hsu, Yi-Ting Pan, Chih-Yu Kuo, Chun-Hsien Lin
The low-density lipoprotein receptor-related protein 1 (LRP1) gene is associated with increased levels of plasma factor VIII (FVIII). We aimed to explore eight functional genetic LRP1 variants for their potential roles in regulating FVIII levels and acute ischemic stroke (AIS). This genetic association study enrolled 192 patients with AIS and 134 controls. There were no significant differences in the genetic frequency of the eight functional single-nucleotide polymorphisms (SNPs) between the control and AIS groups...
April 18, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28431853/transmission-of-methicillin-resistant-staphylococcus-aureus-to-health-care-worker-gowns-and-gloves-during-care-of-residents-in-veterans-affairs-nursing-homes
#8
Lisa Pineles, Daniel J Morgan, Alison Lydecker, J Kristie Johnson, John D Sorkin, Patricia Langenberg, Natalia Blanco, Alan Lesse, John Sellick, Kalpana Gupta, Luci Leykum, Jose Cadena, Nickie Lepcha, Mary-Claire Roghmann
BACKGROUND: This was an observational study designed to estimate the frequency of methicillin-resistant Staphylococcus aureus (MRSA) transmission to gowns and gloves worn by health care workers (HCWs) interacting with Veterans Affairs Community Living Center (VA nursing home) residents to inform MRSA prevention policies. METHODS: Participants included residents and HCWs from 7 VA nursing homes in 4 states and Washington, DC. Residents were cultured for MRSA at the anterior nares, perianal skin, and wound (if present)...
April 18, 2017: American Journal of Infection Control
https://www.readbyqxmd.com/read/28431772/low-glycemic-index-treatment-in-patients-with-drug-resistant-epilepsy
#9
Se Hee Kim, Hoon-Chul Kang, Eun Joo Lee, Joon Soo Lee, Heung Dong Kim
OBJECTIVE: Low glycemic index treatment (LGIT) is a newly developed dietary therapeutic option for epilepsy that is less restrictive than the ketogenic diet (KD). Our objective was to determine the efficacy and tolerability of LGIT. METHODS: From March 2014 to February 2015, 36 patients received LGIT at Severance Children's Hospital. One-year seizure outcomes and side effects were evaluated. RESULTS: A total of 36 patients were assessed. Fourteen were female...
April 18, 2017: Brain & Development
https://www.readbyqxmd.com/read/28431764/seasonal-monitoring-of-blue-mussel-mytilus-spp-populations-in-a-harbor-area-a-focus-on-responses-to-environmental-factors-and-chronic-contamination
#10
C Lacroix, E Duvieilbourg, N Guillou, J Guyomarch, C Bassoulet, D Moraga, G Chapalain, M Auffret
Coastal waters corresponding to macrotidal systems are among the most variable marine biotopes. Sessile animals as bivalve mollusks may however be found forming intertidal beds at high densities, as allowed by full adaptation to local conditions. A better knowledge of adaptive responses to environmental factors is required to foresee possible adverse effects of global change. At the sub-cellular level, transcriptional responses are among the earliest signals of environmental disturbances and they can reveal subtle and meaningful changes in organism exposed to stress...
April 12, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/28431533/effect-of-a-16-week-bikram-yoga-program-on-heart-rate-variability-and-associated-cardiovascular-disease-risk-factors-in-stressed-and-sedentary-adults-a-randomized-controlled-trial
#11
Zoe L Hewett, Kate L Pumpa, Caroline A Smith, Paul P Fahey, Birinder S Cheema
BACKGROUND: Chronic activation of the stress-response can contribute to cardiovascular disease risk, particularly in sedentary individuals. This study investigated the effect of a Bikram yoga intervention on the high frequency power component of heart rate variability (HRV) and associated cardiovascular disease (CVD) risk factors (i.e. additional domains of HRV, hemodynamic, hematologic, anthropometric and body composition outcome measures) in stressed and sedentary adults. METHODS: Eligible adults were randomized to an experimental group (n = 29) or a no treatment control group (n = 34)...
April 21, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28431500/foot-length-chest-and-head-circumference-measurements-in-detection-of-low-birth-weight-neonates-in-mekelle-ethiopia-a-hospital-based-cross-sectional-study
#12
Marta Yemane Hadush, Amanuel Hadgu Berhe, Araya Abrha Medhanyie
BACKGROUND: Low birth weight (Birth weight < 2500 g) is a leading cause of prenatal and neonatal deaths. The early identification of Low birth weight (LBW) neonates is essential for any comprehensive initiative to improve their chance of survival. However, a large proportion of births in developing countries take place at home and birth weight statistics are not available. Therefore, there is a need to develop simple, inexpensive and practical methods to identify low birth weight (LBW) neonates soon after birth...
April 21, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28431382/childhood-maltreatment-preceding-depressive-disorder-at-age-18-years-a-prospective-brazilian-birth-cohort-study
#13
Erika Alejandra Giraldo Gallo, Christian Loret De Mola, Fernando Wehrmeister, Helen Gonçalves, Christian Kieling, Joseph Murray
BACKGROUND: Childhood maltreatment is linked with increased risk for mental illness in adolescence and adulthood. However, little evidence is available on whether different forms of maltreatment have specific effects, and no prospective studies in low- or middle-income countries have addressed this issue. METHODS: Participants in a population-based, birth cohort study in Pelotas, Brazil (N=3715) self-reported exposure to maltreatment (emotional abuse, physical neglect, physical abuse, sexual abuse, domestic violence) in confidential questionnaires at age 15 years, and were assessed for major depression in interviews at age 18 years, using the MINI...
April 1, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28431308/hyperexcitability-of-inferior-colliculus-and-acoustic-startle-reflex-with-age-related-hearing-loss
#14
Binbin Xiong, Ana'am Alkharabsheh, Senthilvelan Manohar, Guang-Di Chen, Ning Yu, Xiaoming Zhao, Richard Salvi, Wei Sun
Chronic tinnitus and hyperacusis often develop with age-related hearing loss presumably due to aberrant neural activity in the central auditory system (CAS) induced by cochlear pathologies. However, the full spectrum of physiological changes that occur in the CAS as a result age-related hearing loss are still poorly understood. To address this issue, neurophysiological measures were obtained from the cochlea and the inferior colliculus (IC) of 2, 6 and 12 month old C57BL/6J mice, a mouse model for early age-related hearing loss...
March 27, 2017: Hearing Research
https://www.readbyqxmd.com/read/28431290/predicting-success-of-vagus-nerve-stimulation-vns-from-eeg-symmetry
#15
REVIEW
Janneke Hilderink, Marleen C Tjepkema-Cloostermans, Anita Geertsema, Janita Glastra-Zwiers, Cecile C de Vos
PURPOSE: Vagus nerve stimulation (VNS) has shown to be an effective treatment for drug resistant epilepsy, with achieving more than 50% seizure reduction in one third of the treated patients. In order to predict which patients will profit from VNS, we previously found that a low pairwise derived Brain Symmetry Index (pdBSI) could potentially predict good responders to VNS treatment. These findings however have to be validated before they can be generalized. METHODS: 39 patients (age 18-68 years) with medically intractable epilepsy who were referred for an implanted VNS system were included...
April 4, 2017: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/28431264/intercomparison-of-methods-to-estimate-black-carbon-emissions-from-cookstoves
#16
Candela de la Sota, Moustapha Kane, Javier Mazorra, Julio Lumbreras, Issakha Youm, Mar Viana
Black carbon is the second largest contributor to climate change and also poses risks to human health. Despite the need for black carbon (BC) emissions estimates from residential biomass burning for cooking, quantitative data are still scarce. This scarcity is mainly due to the scattered location of the stoves, as well as relatively costly and complex analytical methods available. Two low cost and easy-to-use optical methods, a cell-phone based system and smoke stain reflectometry, where compared to elemental carbon (EC) concentrations by the Sunset OCEC Analyzer (TOT)...
April 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28431186/unfractionated-heparin-versus-low-molecular-weight-heparins-for-avoiding-heparin-induced-thrombocytopenia-in-postoperative-patients
#17
REVIEW
Daniela R Junqueira, Liliane M Zorzela, Edson Perini
BACKGROUND: Heparin-induced thrombocytopenia (HIT) is an adverse drug reaction presenting as a prothrombotic disorder related to antibody-mediated platelet activation. It is a paradoxical immune reaction resulting in thrombin generation in vivo, which leads to a hypercoagulable state and the potential to initiate venous or arterial thrombosis. A number of factors are thought to influence the incidence of HIT including the type and preparation of heparin (unfractionated heparin (UFH) or low molecular weight heparin (LMWH)) and the heparin-exposed patient population, with the postoperative patient population at higher risk...
April 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28431030/using-multivariate-base-rates-to-interpret-low-scores-on-an-abbreviated-battery-of-the-delis-kaplan-executive-function-system
#18
Justin E Karr, Mauricio A Garcia-Barrera, James A Holdnack, Grant L Iverson
Objective: Executive function consists of multiple cognitive processes that operate as an interactive system to produce volitional goal-oriented behavior, governed in large part by frontal microstructural and physiological networks. Identification of deficits in executive function in those with neurological or psychiatric conditions can be difficult because the normal variation in executive function test scores, in healthy adults when multiple tests are used, is largely unknown. This study addresses that gap in the literature by examining the prevalence of low scores on a brief battery of executive function tests...
May 1, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28430825/discovery-and-fine-mapping-of-adiposity-loci-using-high-density-imputation-of-genome-wide-association-studies-in-individuals-of-african-ancestry-african-ancestry-anthropometry-genetics-consortium
#19
Maggie C Y Ng, Mariaelisa Graff, Yingchang Lu, Anne E Justice, Poorva Mudgal, Ching-Ti Liu, Kristin Young, Lisa R Yanek, Mary F Feitosa, Mary K Wojczynski, Kristin Rand, Jennifer A Brody, Brian E Cade, Latchezar Dimitrov, Qing Duan, Xiuqing Guo, Leslie A Lange, Michael A Nalls, Hayrettin Okut, Salman M Tajuddin, Bamidele O Tayo, Sailaja Vedantam, Jonathan P Bradfield, Guanjie Chen, Wei-Min Chen, Alessandra Chesi, Marguerite R Irvin, Badri Padhukasahasram, Jennifer A Smith, Wei Zheng, Matthew A Allison, Christine B Ambrosone, Elisa V Bandera, Traci M Bartz, Sonja I Berndt, Leslie Bernstein, William J Blot, Erwin P Bottinger, John Carpten, Stephen J Chanock, Yii-Der Ida Chen, David V Conti, Richard S Cooper, Myriam Fornage, Barry I Freedman, Melissa Garcia, Phyllis J Goodman, Yu-Han H Hsu, Jennifer Hu, Chad D Huff, Sue A Ingles, Esther M John, Rick Kittles, Eric Klein, Jin Li, Barbara McKnight, Uma Nayak, Barbara Nemesure, Adesola Ogunniyi, Andrew Olshan, Michael F Press, Rebecca Rohde, Benjamin A Rybicki, Babatunde Salako, Maureen Sanderson, Yaming Shao, David S Siscovick, Janet L Stanford, Victoria L Stevens, Alex Stram, Sara S Strom, Dhananjay Vaidya, John S Witte, Jie Yao, Xiaofeng Zhu, Regina G Ziegler, Alan B Zonderman, Adebowale Adeyemo, Stefan Ambs, Mary Cushman, Jessica D Faul, Hakon Hakonarson, Albert M Levin, Katherine L Nathanson, Erin B Ware, David R Weir, Wei Zhao, Degui Zhi, Donna K Arnett, Struan F A Grant, Sharon L R Kardia, Olufunmilayo I Oloapde, D C Rao, Charles N Rotimi, Michele M Sale, L Keoki Williams, Babette S Zemel, Diane M Becker, Ingrid B Borecki, Michele K Evans, Tamara B Harris, Joel N Hirschhorn, Yun Li, Sanjay R Patel, Bruce M Psaty, Jerome I Rotter, James G Wilson, Donald W Bowden, L Adrienne Cupples, Christopher A Haiman, Ruth J F Loos, Kari E North
Genome-wide association studies (GWAS) have identified >300 loci associated with measures of adiposity including body mass index (BMI) and waist-to-hip ratio (adjusted for BMI, WHRadjBMI), but few have been identified through screening of the African ancestry genomes. We performed large scale meta-analyses and replications in up to 52,895 individuals for BMI and up to 23,095 individuals for WHRadjBMI from the African Ancestry Anthropometry Genetics Consortium (AAAGC) using 1000 Genomes phase 1 imputed GWAS to improve coverage of both common and low frequency variants in the low linkage disequilibrium African ancestry genomes...
April 21, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28430479/interfacing-superconducting-qubits-and-single-optical-photons-using-molecules-in-waveguides
#20
Sumanta Das, Vincent E Elfving, Sanli Faez, Anders S Sørensen
We propose an efficient light-matter interface at optical frequencies between a single photon and a superconducting qubit. The desired interface is based on a hybrid architecture composed of an organic molecule embedded inside an optical waveguide and electrically coupled to a superconducting qubit placed near the outside surface of the waveguide. We show that high fidelity, photon-mediated, entanglement between distant superconducting qubits can be achieved with incident pulses at the single photon level. Such a low light level is highly desirable for achieving a coherent optical interface with superconducting qubit, since it minimizes decoherence arising from the absorption of light...
April 7, 2017: Physical Review Letters
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