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https://www.readbyqxmd.com/read/28431279/cognitive-control-in-action-tracking-the-dynamics-of-rule-switching-in-5-to-8-year-olds-and-adults
#1
Christopher D Erb, Jeff Moher, Joo-Hyun Song, David M Sobel
Recent studies have suggested that dissociable processes featuring distinct types of inhibition support cognitive control in tasks requiring participants to override a prepotent response with a control-demanding alternative response. An open question concerns how these processes support cognitive flexibility in rule-switching tasks. We used a technique known as reach tracking to investigate how 5- to 8-year-olds (Experiment 1) and adults (Experiment 2) select, maintain, and switch between incompatible rule sets in a computerized version of the Dimensional Change Card Sort (DCCS)...
April 17, 2017: Cognition
https://www.readbyqxmd.com/read/28431258/cage-and-linear-structured-polysiloxane-epoxy-hybrids-for-coatings-surface-property-and-film-permeability
#2
Yanli Ma, Ling He, Mengjun Jia, Lingru Zhao, Yanyan Zuo, Pingan Hu
Three polysiloxane/epoxy hybrids obtained by evolving cage- or linear-structured polysiloxane into poly glycidyl methacrylate (PGMA) matrix are compared used as coatings. One is the cage-structured hybrid of P(GMA/MA-POSS) copolymer obtained by GMA and methacrylisobutyl polyhedral oligomeric silsesquioxane (MA-POSS) via free radical polymerization, the other two are PGMA/NH2-POSS and PGMA/NH2-PDMS hybrids by cage-structured aminopropyllsobutyl POSS (NH2-POSS) or linear-structured diamino terminated poly(dimethylsiloxane) (NH2-PDMS) to cure PGMA...
April 12, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28431216/synthesis-and-loading-dependent-characteristics-of-nitrogen-doped-graphene-foam-carbon-nanotube-manganese-oxide-ternary-composite-electrodes-for-high-performance-supercapacitors
#3
Tao Cheng, Baozhi Yu, Linli Cao, Huiyun Tan, Xinghua Li, Xinliang Zheng, Weilong Li, Zhaoyu Ren, Jinbo Bai
The ternary composite electrodes, nitrogen-doped graphene foam/carbon nanotube/manganese dioxide (NGF/CNT/MnO2), have been successfully fabricated via chemical vapor deposition (CVD) and facile hydrothermal method. The morphologies of the MnO2 nanoflakes presented the loading-dependent characteristics and the nanoflake thickness could also be tuned by MnO2 mass loading in the fabrication process. The correlation between their morphology and electrochemical performance was systematically investigated by controlling MnO2 mass loading in the ternary composite electrodes...
April 18, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28431175/minepath-org-a-free-interactive-pathway-analysis-web-server
#4
Lefteris Koumakis, Panos Roussos, George Potamias
Minepath (www.minepath.org) is a web-based platform that elaborates on, and radically extends the identification of differentially expressed sub-paths in molecular pathways. Besides the network topology, the underlying MinePath algorithmic processes exploit exact gene-gene molecular relationships (e.g. activation, inhibition) and are able to identify differentially expressed pathway parts. Each pathway is decomposed into all its constituent sub-paths, which in turn are matched with corresponding gene expression profiles...
April 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28431137/trapp-webserver-predicting-protein-binding-site-flexibility-and-detecting-transient-binding-pockets
#5
Antonia Stank, Daria B Kokh, Max Horn, Elena Sizikova, Rebecca Neil, Joanna Panecka, Stefan Richter, Rebecca C Wade
The TRAnsient Pockets in Proteins (TRAPP) webserver provides an automated workflow that allows users to explore the dynamics of a protein binding site and to detect pockets or sub-pockets that may transiently open due to protein internal motion. These transient or cryptic sub-pockets may be of interest in the design and optimization of small molecular inhibitors for a protein target of interest. The TRAPP workflow consists of the following three modules: (i) TRAPP structure- generation of an ensemble of structures using one or more of four possible molecular simulation methods; (ii) TRAPP analysis-superposition and clustering of the binding site conformations either in an ensemble of structures generated in step (i) or in PDB structures or trajectories uploaded by the user; and (iii) TRAPP pocket-detection, analysis, and visualization of the binding pocket dynamics and characteristics, such as volume, solvent-exposed area or properties of surrounding residues...
April 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28431058/additional-electrodes-on-the-quartet%C3%A2-lv-lead-provide-more-programmable-pacing-options-than-bipolar-and-tripolar-equivalents
#6
David O'Donnell, Johannes Sperzel, Bernard Thibault, Christopher A Rinaldi, Carlo Pappone, Klaus-Jürgen Gutleben, Christopher Leclercq, Hedi Razavi, Kyungmoo Ryu, Luke C Mcspadden, Avi Fischer, Gery Tomassoni
Aims: The aim of this study was to evaluate any benefits to the number of viable pacing vectors and maximal spatial coverage with quadripolar left ventricular (LV) leads when compared with tripolar and bipolar equivalents in patients receiving cardiac resynchronization therapy (CRT). Methods and Results: A meta-analysis of five previously published clinical trials involving the Quartet™ LV lead (St Jude Medical, St Paul, MN, USA) was performed to evaluate the number of viable pacing vectors defined as capture thresholds ≤2...
April 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28430977/deep-mining-heterogeneous-networks-of-biomedical-linked-data-to-predict-novel-drug-target-associations
#7
Nansu Zong, Hyeoneui Kim, Victoria Ngo, Olivier Harismendy
Motivation: A heterogeneous network topology possessing abundant interactions between biomedical entities has yet to be utilized in similarity-based methods for predicting drug-target associations based on the array of varying features of drugs and their targets. Deep learning reveals features of vertices of a large network that can be adapted in accommodating the similarity-based solutions to provide a flexible method of drug-target prediction. Results: We propose a similarity-based drug-target prediction method that enhances existing association discovery methods by using a topology-based similarity measure...
April 18, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28430964/metalims-a-simple-open-source-laboratory-information-management-system-for-small-metagenomic-labs
#8
Cassie Elizabeth Heinle, Nicolas Paul Eugène Gaultier, Dana Miller, Rikky Wenang Purbojati, Federico M Lauro
BACKGROUND: As the cost of sequencing continues to fall, smaller groups increasingly initiate and manage larger sequencing projects and take on the complexity of data storage for high volumes of samples. This has created a need for low-cost laboratory information management systems (LIMS) that contain flexible fields to accommodate the unique nature of individual labs. Many labs do not have a dedicated IT position, so LIMS must also be easy to setup and maintain with minimal technical proficiency...
April 18, 2017: GigaScience
https://www.readbyqxmd.com/read/28430886/intrinsic-protein-disorder-reduces-small-scale-gene-duplicability
#9
Sanghita Banerjee, Felix Feyertag, David Alvarez-Ponce
Whereas the rate of gene duplication is relatively high, only certain duplications survive the filter of natural selection and can contribute to genome evolution. However, the reasons why certain genes can be retained after duplication whereas others cannot remain largely unknown. Many proteins contain intrinsically disordered regions (IDRs), whose structures fluctuate between alternative conformational states. Due to their high flexibility, IDRs often enable protein-protein interactions and are the target of post-translational modifications...
April 19, 2017: DNA Research: An International Journal for Rapid Publication of Reports on Genes and Genomes
https://www.readbyqxmd.com/read/28430432/absolute-binding-free-energies-between-t4-lysozyme-and-141-small-molecules-calculations-based-on-multiple-rigid-receptor-configurations
#10
Bing Xie, Trung Hai Nguyen, David D L Minh
We demonstrate the feasibility of estimating protein-ligand binding free energies using multiple rigid receptor configurations. Based on T4 lysozyme snapshots extracted from six alchemical binding free energy calculations with a flexible receptor, binding free energies were estimated for a total of 141 ligands. For 24 ligands, the calculations reproduced flexible-receptor estimates with a correlation coefficient of 0.90 and a root mean square error of 1.59 kcal/mol. The accuracy of calculations based on Poisson-Boltzmann/Surface Area implicit solvent was comparable to previously reported free energy calculations...
April 21, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28430421/flexibility-of-the-carbodiphosphorane-ph3p-2c-structural-characterization-of-a-linear-form
#11
Patrick J Quinlivan, Gerard Parkin
X-ray diffraction studies demonstrate that crystals of the carbodiphosphorane, (Ph3P)2C, obtained from solutions in benzene, exhibit a linear P-C-P interaction. This observation is in contrast to the highly bent structures that have been previously reported for this molecule, thereby providing experimental evidence that the coordination geometry at zerovalent carbon may be very flexible. Density functional theory calculations support the experimental observations by demonstrating that the energy of (Ph3P)2C varies relatively little over the range 130-180°...
April 21, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28430411/2-methylimidazole-derived-ni-co-layered-double-hydroxide-nanosheets-as-high-rate-capability-and-high-energy-density-storage-material-in-hybrid-supercapacitors
#12
Teng Wang, Shengli Zhang, Xingbin Yan, Miaoqiang Lyu, Lianzhou Wang, John M Bell, Hongxia Wang
A new method based on one-step solvothermal reaction is demonstrated to synthesize ultrathin Ni-Co layered double hydroxide (LDH) nanosheets which grow directly on a flexible carbon fiber cloth (NiCo-LDH/CFC). Through using 2-methylimidazole as complex and methanol as solvent, the as-prepared NiCo-LDH/CFC shows a (003) facet preferential growth and an expanded interlayer spacing structure, resulting in a unique 3D porous nanostructure with the thickness of nanosheets around 5-7 nm that shows high energy storage performance...
April 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28430279/microcontact-printing-with-aminosilanes-creating-biomolecule-micro-and-nanoarrays-for-multiplexed-microfluidic-bioassays
#13
Shivani Sathish, Sébastien G Ricoult, Kazumi Toda-Peters, Amy Q Shen
Microfluidic systems integrated with protein and DNA micro- and nanoarrays have been the most sought-after technologies to satisfy the growing demand for high-throughput disease diagnostics. As the sensitivity of these systems relies on the bio-functionalities of the patterned recognition biomolecules, the primary concern has been to develop simple technologies that enable biomolecule immobilization within microfluidic devices whilst preserving bio-functionalities. To address this concern, we introduce a two-step patterning approach to create micro- and nanoarrays of biomolecules within microfluidic devices...
April 21, 2017: Analyst
https://www.readbyqxmd.com/read/28430250/tolerancing-the-alignment-of-large-core-optical-fibers-fiber-bundles-and-light-guides-using-a-fourier-approach
#14
Travis W Sawyer, Ryan Petersburg, Sarah E Bohndiek
Optical fiber technology is found in a wide variety of applications to flexibly relay light between two points, enabling information transfer across long distances and allowing access to hard-to-reach areas. Large-core optical fibers and light guides find frequent use in illumination and spectroscopic applications, for example, endoscopy and high-resolution astronomical spectroscopy. Proper alignment is critical for maximizing throughput in optical fiber coupling systems; however, there currently are no formal approaches to tolerancing the alignment of a light-guide coupling system...
April 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28430194/engineering-genetic-circuit-interactions-within-and-between-synthetic-minimal-cells
#15
Katarzyna P Adamala, Daniel A Martin-Alarcon, Katriona R Guthrie-Honea, Edward S Boyden
Genetic circuits and reaction cascades are of great importance for synthetic biology, biochemistry and bioengineering. An open question is how to maximize the modularity of their design to enable the integration of different reaction networks and to optimize their scalability and flexibility. One option is encapsulation within liposomes, which enables chemical reactions to proceed in well-isolated environments. Here we adapt liposome encapsulation to enable the modular, controlled compartmentalization of genetic circuits and cascades...
May 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28430126/accurate-ambient-noise-assessment-using-smartphones
#16
Willian Zamora, Carlos T Calafate, Juan-Carlos Cano, Pietro Manzoni
Nowadays, smartphones have become ubiquitous and one of the main communication resources for human beings. Their widespread adoption was due to the huge technological progress and to the development of multiple useful applications. Their characteristics have also experienced a substantial improvement as they now integrate multiple sensors able to convert the smartphone into a flexible and multi-purpose sensing unit. The combined use of multiple smartphones endowed with several types of sensors gives the possibility to monitor a certain area with fine spatial and temporal granularity, a procedure typically known as crowdsensing...
April 21, 2017: Sensors
https://www.readbyqxmd.com/read/28430015/a-randomized-controlled-trial-of-a-mindfulness-and-acceptance-group-therapy-for-residential-substance-use-patients
#17
Ryan C Shorey, Joanna Elmquist, Michael J Gawrysiak, Catherine Strauss, Ellen Haynes, Scott Anderson, Gregory L Stuart
BACKGROUND: Substance use disorders are understood as a chronically relapsing condition that is difficult to treat. However, in recent years there have been promising developments in the treatment of substance use disorders, specifically with interventions based on mindfulness and acceptance and commitment therapy. Little research has examined whether these types of interventions may positively impact residential substance use treatment outcomes. OBJECTIVES: Thus, in the current study we developed and examined, in a randomized controlled trial, a 4-week, eight-session, adjunctive mindfulness and acceptance group therapy for patients in residential substance use treatment...
April 21, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28429990/medicaid-waivers-and-negotiated-federalism-in-the-us-is-there-relevance-to-other-federal-systems
#18
Carol S Weissert, William G Weissert
Medicaid waivers have been a principal tool of innovation in health policy in the US since at least the mid 1970s. As Republicans seek to give the states more flexibility in their implementation and management of both Medicaid and the Affordable Care Act or its replacement, waiver authority is likely to be one of the key work arounds for avoiding political barriers in the US Senate. While block-granting Medicaid may require 60 senate votes, waiver authority already exists in both Medicaid law and the Affordable Care Act...
January 1, 2017: Journal of Health Services Research & Policy
https://www.readbyqxmd.com/read/28429984/partnering-to-improve-care-the-case-of-the-veterans-health-administration-s-quality-enhancement-research-initiative
#19
Alicia A Bergman, Deborah M Delevan, Isomi M Miake-Lye, Lisa V Rubenstein, David A Ganz
Background Within many large health care organizations, researchers and operations partners (i.e., policymakers, managers, clinical leaders) join to conduct studies to improve the quality of patient care. Yet optimal approaches to conducting partnership research and evaluation are only beginning to be clearly defined. The Veterans' Health Administration (VA) Quality Enhancement Research Initiative (QUERI), funded by operations leaders and administered by the VA's research service, now has nearly two decades of experience in fostering research-operations partnerships for improving quality of VA care...
January 1, 2017: Journal of Health Services Research & Policy
https://www.readbyqxmd.com/read/28429947/a-practical-guide-to-development-of-a-successful-robotic-abdominal-surgery-program-the-path-to-implementation
#20
Z Jutric, S Warner, Y Fong
The authors describe current situation in robotic assisted operations. The most important aspects of establishing a successful robotic program are patience and flexibility. The improved patient satisfaction, return to function, and decreased perioperative pain for patients and surgeons will be seen, but the road is long and requires careful navigation.Key Words: robot abdominal surgery - program development.
2017: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
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