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https://www.readbyqxmd.com/read/27906408/spatially-uniform-resistance-switching-of-low-current-high-endurance-titanium-niobium-oxide-memristors
#1
Suhas Kumar, Noraica Davila, Ziwen Wang, Xiaopeng Huang, John Paul Strachan, David Vine, A L David Kilcoyne, Yoshio Nishi, R Stanley Williams
We analyzed micrometer-scale titanium-niobium-oxide prototype memristors, which exhibited low write-power (<3 μW) and energy (<200 fJ per bit per μm(2)), low read-power (∼nW), and high endurance (>millions of cycles). To understand their physico-chemical operating mechanisms, we performed in operando synchrotron X-ray transmission nanoscale spectromicroscopy using an ultra-sensitive time-multiplexed technique. We observed only spatially uniform material changes during cell operation, in sharp contrast to the frequently detected formation of a localized conduction channel in transition-metal-oxide memristors...
December 1, 2016: Nanoscale
https://www.readbyqxmd.com/read/27904993/molecular-mechanisms-of-heart-failure-insights-from-drosophila
#2
Shasha Zhu, Zhe Han, Yan Luo, Yulin Chen, Qun Zeng, Xiushan Wu, Wuzhou Yuan
Heart failure places an enormous burden on health and economic systems worldwide. It is a complex disease that is profoundly influenced by both genetic and environmental factors. Neither the molecular mechanisms underlying heart failure nor effective prevention strategies are fully understood. Fortunately, relevant aspects of human heart failure can be experimentally studied in tractable model animals, including the fruit fly, Drosophila, allowing the in vivo application of powerful and sophisticated molecular genetic and physiological approaches...
December 1, 2016: Heart Failure Reviews
https://www.readbyqxmd.com/read/27903734/deviations-from-critical-dynamics-in-interictal-epileptiform-activity
#3
Oshrit Arviv, Mordekhay Medvedovsky, Liron Sheintuch, Abraham Goldstein, Oren Shriki
: The framework of criticality provides a unifying perspective on neuronal dynamics from in vitro cortical cultures to functioning human brains. Recent findings suggest that a healthy cortex displays critical dynamics, giving rise to scale-free spatiotemporal cascades of activity, termed neuronal avalanches. Pharmacological manipulations of the excitation-inhibition balance (EIB) in cortical cultures were previously shown to result in deviations from criticality and from the power law scaling of avalanche size distribution...
November 30, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27903486/predictive-models-of-complications-following-endovascular-aortic-aneurysm-repair
#4
Adrien Kaladji, Anne Daoudal, Aurélien Duménil, Cemil Göksu, Alain Cardon, Elodie Clochard, Antoine Lucas, Florent Lalys
BACKGROUND: The risk of long-term complications after endovascular aneurysm repair (EVAR) is still higher than open surgery and is a critical issue. This study aims to make available reliable statistical predictive models of complications after EVAR. METHODS: Two hundred and thirteen patients who underwent EVAR between 2002 and 2012 were included in this study. The preoperative CT-scans were analyzed with a dedicated workstation to provide spatially correct 3-dimensional data...
November 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27903483/therapeutic-benefits-and-adverse-effects-of-combined-pro-angiogenic-gene-therapy-in-mouse-critical-leg-ischemia
#5
Benoît Lebas, Julien Galley, Edith Renaud-Gabardos, Françoise Pujol, Françoise Lenfant, Barbara Garmy-Susini, Xavier Chaufour, Anne-Catherine Prats
OBJECTIVE: Critical leg ischemia (CLI) represents the ultimate stage of peripheral arterial disease. Despite current surgery advances, patients with CLI have limited therapeutic options. Therapeutic angiogenesis thus appears as a powerful approach, aiming to stimulate vessel formation by angiogenic molecules administration. In this context, combined gene therapy has proved the most efficient. The present study aims to compare, in a preclinical mouse model, the therapeutic benefit of a combination of two angiogenic factors FGF2 (fibroblast growth factor 2) and Cyr61 using plasmid and viral vectors, able to generate short or long-term transgene expression in the leg, respectively...
November 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27902663/nursing-practices-and-policies-related-to-family-presence-during-resuscitation
#6
Kelly A Powers, Lori Candela
BACKGROUND: Despite its shown benefits, family presence during resuscitation (FPDR) is a controversial topic among critical care nurses and is not routinely implemented. OBJECTIVES: The objective of this study was to describe FPDR practices among critical care nurses, as well as the prevalence of FPDR policies and education. METHODS: The study used a descriptive survey design. Data were collected from a convenience sample of critical care nurses obtained at a national level...
January 2017: Dimensions of Critical Care Nursing: DCCN
https://www.readbyqxmd.com/read/27900421/spectroscopic-sensors-for-in-line-bioprocess-monitoring-in-research-and-pharmaceutical-industrial-application
#7
REVIEW
Jens Claßen, Florian Aupert, Kenneth F Reardon, Dörte Solle, Thomas Scheper
The use of spectroscopic sensors for bioprocess monitoring is a powerful tool within the process analytical technology (PAT) initiative of the US Food and Drug Administration. Spectroscopic sensors enable the simultaneous real-time bioprocess monitoring of various critical process parameters including biological, chemical, and physical variables during the entire biotechnological production process. This potential can be realized through the combination of spectroscopic measurements (UV/Vis spectroscopy, IR spectroscopy, fluorescence spectroscopy, and Raman spectroscopy) with multivariate data analysis to obtain relevant process information out of an enormous amount of data...
November 30, 2016: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/27898829/gapit-version-2-an-enhanced-integrated-tool-for-genomic-association-and-prediction
#8
You Tang, Xiaolei Liu, Jiabo Wang, Meng Li, Qishan Wang, Feng Tian, Zhongbin Su, Yuchun Pan, Di Liu, Alexander E Lipka, Edward S Buckler, Zhiwu Zhang
Most human diseases and agriculturally important traits are complex. Dissecting their genetic architecture requires continued development of innovative and powerful statistical methods. Corresponding advances in computing tools are critical to efficiently use these statistical innovations and to enhance and accelerate biomedical and agricultural research and applications. The genome association and prediction integrated tool (GAPIT) was first released in 2012 and became widely used for genome-wide association studies (GWAS) and genomic prediction...
July 2016: Plant Genome
https://www.readbyqxmd.com/read/27897669/domain-general-stroop-performance-and-hemispheric-asymmetries-a-resting-state-eeg-study
#9
Ettore Ambrosini, Antonino Vallesi
The ability to suppress irrelevant information while executing a task or interference resistance is a function of pFC that is critical for successful goal-directed human behavior. In the study of interference resistance and, more generally, executive functions, two key questions are still open: Does pFC contribute to cognitive control abilities through lateralized but domain-general mechanisms or through hemispheric specialization of domain-specific processes? And what are the underlying causes of interindividual differences in executive control performance? To shed light on these issues, here we employed an interindividual difference approach to investigate whether participants' hemispheric asymmetry in resting-state electrophysiological brain dynamics may reflect their variability in domain-general interference resistance...
November 29, 2016: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/27897112/harnessing-the-power-of-sirt1-and-non-coding-rnas-in-vascular-disease
#10
Kenneth Maiese
Noncommunicable diseases (NCDs) contribute to a significant amount of disability and death in the world. Of these disorders, vascular disease is ranked high, falls within the five leading causes of death, and impacts multiple other disease entities such as those of the cardiac system, nervous system, and metabolic disease. Targeting the silent mating type information regulation 2 homolog 1 (Saccharomyces cerevisiae) (SIRT1) pathway and the modulation of micro ribonucleic acids (miRNAs) may hold great promise for the development of novel strategies for the treatment of vascular disease since each of these pathways are highly relevant to cardiac and nervous system disorders as well as to metabolic dysfunction...
November 29, 2016: Current Neurovascular Research
https://www.readbyqxmd.com/read/27896989/opening-the-door-to-the-large-scale-use-of-clinical-lab-measures-for-association-testing-exploring-different-methods-for-defining-phenotypes
#11
Christopher R Bauer, Daniel Lavage, John Snyder, Joseph Leader, J Matthew Mahoney, Sarah A Pendergrass
The past decade has seen exponential growth in the numbers of sequenced and genotyped individuals and a corresponding increase in our ability of collect and catalogue phenotypic data for use in the clinic. We now face the challenge of integrating these diverse data in new ways new that can provide useful diagnostics and precise medical interventions for individual patients. One of the first steps in this process is to accurately map the phenotypic consequences of the genetic variation in human populations. The most common approach for this is the genome wide association study (GWAS)...
2016: Pacific Symposium on Biocomputing
https://www.readbyqxmd.com/read/27896932/mesoionic-insecticides-a-novel-class-of-insecticides-that-modulate-nicotinic-acetylcholine-receptors
#12
Caleb W Holyoke, Daniel Cordova, Wenming Zhang, James D Barry, Robert M Leighty, Robert F Dietrich, James J Rauh, Thomas F Pahutski, George P Lahm, My-Hanh Thi Tong, Eric A Benner, John L Andreassi, Rejane M Smith, Daniel R Vincent, Laurie A Christianson, Luis A Teixeira, Vineet Singh, Kenneth A Hughes
BACKGROUND: As the world population grows toward 9 billion by 2050 it is projected that food production will need to increase by 60%. A critical part of this growth includes the safe and effective use of insecticides to reduce the estimated 20-49% loss of global crop yields due to pests. Development of new insecticides will help sustain this protection and overcome insecticide resistance. RESULTS: A novel class of mesoionic compounds has been discovered with exceptional insecticidal activity on a range of Hemiptera and Lepidoptera...
November 29, 2016: Pest Management Science
https://www.readbyqxmd.com/read/27895707/fungal-fermentation-on-anaerobic-digestate-for-lipid-based-biofuel-production
#13
Yuan Zhong, Zhiguo Liu, Christine Isaguirre, Yan Liu, Wei Liao
BACKGROUND: Anaerobic digestate is the effluent from anaerobic digestion of organic wastes. It contains a significant amount of nutrients and lignocellulosic materials, even though anaerobic digestion consumed a large portion of organic matters in the wastes. Utilizing the nutrients and lignocellulosic materials in the digestate is critical to significantly improve efficiency of anaerobic digestion technology and generate value-added chemical and fuel products from the organic wastes...
2016: Biotechnology for Biofuels
https://www.readbyqxmd.com/read/27893905/critical-care-interprofessional-education-exploring-conflict-and-power-lessons-learned
#14
Mary Louanne Friend, Richard D Friend, Cassandra Ford, Patrick J Ewell
BACKGROUND: The purpose of this mixed-methods study was to evaluate the effects of an innovative critical care interprofessional education intervention on prelicensure nursing and medical students at a large public university. The class provided opportunities for students to (a) explore stereotypes about each respective profession, (b) examine the occurrence and effects of interprofessional conflict in high-acuity areas, and (c) explore conflict resolution techniques while learning how to perform critical care procedures as a team...
December 1, 2016: Journal of Nursing Education
https://www.readbyqxmd.com/read/27890048/cultural-hegemony-educators-perspectives-on-facilitating-cross-cultural-dialogue
#15
Zareen Zaidi, Daniëlle Verstegen, Rashmi Vyas, Omayma Hamed, Tim Dornan, Page Morahan
BACKGROUND: We live in an age when education is being internationalized. This can confront students with 'cultural hegemony' that can result from the unequal distribution of power and privilege in global society. The name that is given to awareness of social inequality is 'critical consciousness'. Cross-cultural dialogue provides an opportunity for learners to develop critical consciousness to counter cultural hegemony. The purpose of this research was to understand how learners engage with cross-cultural dialogue, so we can help them do so more effectively in the future...
2016: Medical Education Online
https://www.readbyqxmd.com/read/27889365/characterizing-and-modelling-river-channel-migration-rates-at-a-regional-scale-case-study-of-south-east-france
#16
Adrien Alber, Hervé Piégay
An increased awareness by river managers of the importance of river channel migration to sediment dynamics, habitat complexity and other ecosystem functions has led to an advance in the science and practice of identifying, protecting or restoring specific erodible corridors across which rivers are free to migrate. One current challenge is the application of these watershed-specific goals at the regional planning scales (e.g., the European Water Framework Directive). This study provides a GIS-based spatial analysis of the channel migration rates at the regional-scale...
November 23, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27888165/clinical-effectiveness-of-adjunctive-antimicrobial-photodynamic-therapy-for-residual-pockets-during-supportive-periodontal-therapy-a-systematic-review-and-meta-analysis
#17
Dong Xue, Ying Zhao
PURPOSE: To evaluate the clinical efficacy of antimicrobial photodynamic therapy (aPDT) adjunctive to scaling and root planing (SRP) in the treatment of residual pockets for chronic periodontitis patients on supportive periodontal therapy (SPT). METHOD: Bibliographic databases of MEDLINE and Cochrane Library were thoroughly searched up to July 2016 for eligible randomized controlled trials (RCTs). Mean differences (MD) and the corresponding 95% confidence intervals (CI) were synthesized for probing depth (PD) reduction and clinical attachment level (CAL) gain...
November 22, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/27887981/predictors-of-mortality-in-the-critically-ill-cirrhotic-patient-is-the-model-for-end-stage-liver-disease-enough
#18
Alagappan Annamalai, Megan Y Harada, Melissa Chen, Tram Tran, Ara Ko, Eric J Ley, Miriam Nuno, Andrew Klein, Nicholas Nissen, Mazen Noureddin
BACKGROUND: Critically ill cirrhotics urgently require liver transplantation but are at high risk for perioperative mortality. The Model for End-Stage Liver Disease (MELD) score, recently updated to incorporate serum sodium, estimates survival probability in patients with cirrhosis but needs further evaluation in the critically ill. The purpose of this study was to evaluate the predictive power of intensive care unit (ICU) admission MELD scores and identify clinical risk factors associated with increased mortality...
November 22, 2016: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/27886023/quantifying-the-dynamic-of-osa-brain-using-multifractal-formalism-a-novel-measure-for-sleep-fragmentation
#19
Somayeh Raiesdana
It is thought that the critical brain dynamics in sleep is modulated during frequent periods of wakefulness. This paper utilizes the capacity of EEG based scaling analysis to quantify sleep fragmentation in patients with obstructive sleep apnea. The scale-free (fractal) behavior refers to a state where no characteristic scale dominates the dynamics of the underlying process which is evident as long range correlations in a time series. Here, Multiscaling (multifractal) spectrum is utilized to quantify the disturbed dynamic of an OSA brain with fragmented sleep...
November 18, 2016: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/27885770/the-power-of-symbolic-capital-in-patient-and-public-involvement-in-health-research
#20
Louise Locock, Anne-Marie Boylan, Rosamund Snow, Sophie Staniszewska
BACKGROUND: Policy-makers and health research funders increasingly require researchers to demonstrate that they have involved patients in the design and conduct of research. However, the extent to which patients and public have the power to get involved on an equal footing is dependent on their economic, cultural, social and symbolic capital. OBJECTIVE: To explore power relations in patient and public involvement (PPI) in research, particularly how patients may wield symbolic capital to develop a more equal relationship...
November 24, 2016: Health Expectations: An International Journal of Public Participation in Health Care and Health Policy
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