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https://www.readbyqxmd.com/read/29137140/effect-of-relative-humidity-on-adsorption-breakthrough-of-co%C3%A2-on-activated-carbon-fibers
#1
Yu-Chun Chiang, Yu-Jen Chen, Cheng-Yen Wu
Microporous activated carbon fibers (ACFs) were developed for CO₂ capture based on potassium hydroxide (KOH) activation and tetraethylenepentamine (TEPA) amination. The material properties of the modified ACFs were characterized using several techniques. The adsorption breakthrough curves of CO₂ were measured and the effect of relative humidity in the carrier gas was determined. The KOH activation at high temperature generated additional pore networks and the intercalation of metallic K into the carbon matrix, leading to the production of mesopore and micropore volumes and providing access to the active sites in the micropores...
November 11, 2017: Materials
https://www.readbyqxmd.com/read/29134607/the-cost-effectiveness-of-dulaglutide-1-5mg-versus-exenatide-qw-for-the-treatment-of-patients-with-type-2-diabetes-mellitus-in-france
#2
Mickael Basson, Dionysios Ntais, Ruba Ayyub, Donna Wright, Julia Lowin, Florence Chartier, Stéphane Roze, Kirsi Norrbacka
INTRODUCTION: Dulaglutide is a novel onceweekly administered glucagon-like peptide 1 receptor agonist (GLP-1 RA) for the management of type 2 diabetes mellitus (T2DM). The objective of this analysis was to estimate the cost-effectiveness of dulaglutide 1.5 mg versus exenatide QW for the management of T2DM in France. METHODS: The QuintilesIMS CORE Diabetes Model was used to estimate the expected lifetime direct medical costs and outcomes of T2DM from the perspective of the French National Health Service...
November 13, 2017: Diabetes Therapy: Research, Treatment and Education of Diabetes and related Disorders
https://www.readbyqxmd.com/read/29133792/controlled-synthesis-of-conjugated-polycarbazole-polymers-via-structure-tuning-for-gas-storage-and-separation-applications
#3
Guoyan Li, Long Qin, Chan Yao, Yanhong Xu
A series of conjugated microporous polymers (CMPs) based on 1,3,6,8-tetrabromocarbazole (N4CMP-1-5) is synthesized via Suzuki cross-coupling or Sonogashira polycondensation. The porosity properties and surface area of these polymer networks can be finely tuned by using a linker with different geometries or strut length. These polymers show the Brunauer-Emmett-Tellerthe (BET) surface areas ranging from 592 to 1426 m(2) g(-1). The dominant pore sizes of the polymers on the basis of the different linker are located between 0...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29133398/analysis-of-high-resolution-3d-intrachromosomal-interactions-aided-by-bayesian-network-modeling
#4
Xizhe Zhang, Sergio Branciamore, Grigoriy Gogoshin, Andrei S Rodin, Arthur D Riggs
Long-range intrachromosomal interactions play an important role in 3D chromosome structure and function, but our understanding of how various factors contribute to the strength of these interactions remains poor. In this study we used a recently developed analysis framework for Bayesian network (BN) modeling to analyze publicly available datasets for intrachromosomal interactions. We investigated how 106 variables affect the pairwise interactions of over 10 million 5-kb DNA segments in the B-lymphocyte cell line GB12878...
November 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29121268/association-of-polygenic-score-for-schizophrenia-and-hla-antigen-and-inflammation-genes-with-response-to-lithium-in-bipolar-affective-disorder-a-genome-wide-association-study
#5
Azmeraw T Amare, Klaus Oliver Schubert, Liping Hou, Scott R Clark, Sergi Papiol, Urs Heilbronner, Franziska Degenhardt, Fasil Tekola-Ayele, Yi-Hsiang Hsu, Tatyana Shekhtman, Mazda Adli, Nirmala Akula, Kazufumi Akiyama, Raffaella Ardau, Bárbara Arias, Jean-Michel Aubry, Lena Backlund, Abesh Kumar Bhattacharjee, Frank Bellivier, Antonio Benabarre, Susanne Bengesser, Joanna M Biernacka, Armin Birner, Clara Brichant-Petitjean, Pablo Cervantes, Hsi-Chung Chen, Caterina Chillotti, Sven Cichon, Cristiana Cruceanu, Piotr M Czerski, Nina Dalkner, Alexandre Dayer, Maria Del Zompo, J Raymond DePaulo, Bruno Étain, Peter Falkai, Andreas J Forstner, Louise Frisen, Mark A Frye, Janice M Fullerton, Sébastien Gard, Julie S Garnham, Fernando S Goes, Maria Grigoroiu-Serbanescu, Paul Grof, Ryota Hashimoto, Joanna Hauser, Stefan Herms, Per Hoffmann, Andrea Hofmann, Stephane Jamain, Esther Jiménez, Jean-Pierre Kahn, Layla Kassem, Po-Hsiu Kuo, Tadafumi Kato, John Kelsoe, Sarah Kittel-Schneider, Sebastian Kliwicki, Barbara König, Ichiro Kusumi, Gonzalo Laje, Mikael Landén, Catharina Lavebratt, Marion Leboyer, Susan G Leckband, Alfonso Tortorella, Mirko Manchia, Lina Martinsson, Michael J McCarthy, Susan McElroy, Francesc Colom, Marina Mitjans, Francis M Mondimore, Palmiero Monteleone, Caroline M Nievergelt, Markus M Nöthen, Tomas Novák, Claire O'Donovan, Norio Ozaki, Urban Ösby, Andrea Pfennig, James B Potash, Andreas Reif, Eva Reininghaus, Guy A Rouleau, Janusz K Rybakowski, Martin Schalling, Peter R Schofield, Barbara W Schweizer, Giovanni Severino, Paul D Shilling, Katzutaka Shimoda, Christian Simhandl, Claire M Slaney, Alessio Squassina, Thomas Stamm, Pavla Stopkova, Mario Maj, Gustavo Turecki, Eduard Vieta, Julia Volkert, Stephanie Witt, Adam Wright, Peter P Zandi, Philip B Mitchell, Michael Bauer, Martin Alda, Marcella Rietschel, Francis J McMahon, Thomas G Schulze, Bernhard T Baune
Importance: Lithium is a first-line mood stabilizer for the treatment of bipolar affective disorder (BPAD). However, the efficacy of lithium varies widely, with a nonresponse rate of up to 30%. Biological response markers are lacking. Genetic factors are thought to mediate treatment response to lithium, and there is a previously reported genetic overlap between BPAD and schizophrenia (SCZ). Objectives: To test whether a polygenic score for SCZ is associated with treatment response to lithium in BPAD and to explore the potential molecular underpinnings of this association...
November 9, 2017: JAMA Psychiatry
https://www.readbyqxmd.com/read/29120182/designing-single-ion-magnets-and-phosphorescent-materials-with-1-methylimidazole-5-carboxylate-and-transition-metal-ions
#6
Antonio A García-Valdivia, Jose M Seco, Javier Cepeda, Antonio Rodríguez-Diéguez
Detailed structural, magnetic, and photoluminescence (PL) characterization of four new compounds based on 1-methylimidazole-5-carboxylate (mimc) ligand and transition metal ions, namely [Ni(mimc)2(H2O)4] (1), [Co(μ-mimc)2]n (2), {[Cu2(μ-mimc)4(H2O)]·2H2O}n (3), and [Cd(μ-mimc)2(H2O)]n (4) is reported. The structural diversity found in the family of compounds derives from the coordination versatility of the ligand, which coordinates as a terminal ligand to give a supramolecular network of monomeric entities in 1 or acts as a bridging linker to build isoreticular 2D coordination polymers (CPs) in 2-4...
November 9, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29118696/a-theory-of-how-columns-in-the-neocortex-enable-learning-the-structure-of-the-world
#7
Jeff Hawkins, Subutai Ahmad, Yuwei Cui
Neocortical regions are organized into columns and layers. Connections between layers run mostly perpendicular to the surface suggesting a columnar functional organization. Some layers have long-range excitatory lateral connections suggesting interactions between columns. Similar patterns of connectivity exist in all regions but their exact role remain a mystery. In this paper, we propose a network model composed of columns and layers that performs robust object learning and recognition. Each column integrates its changing input over time to learn complete predictive models of observed objects...
2017: Frontiers in Neural Circuits
https://www.readbyqxmd.com/read/29114071/working-memory-and-decision-making-in-a-fronto-parietal-circuit-model
#8
John D Murray, Jorge Jaramillo, Xiao-Jing Wang
Working memory (WM) and decision making (DM) are fundamental cognitive functions involving a distributed interacting network of brain areas, with the posterior parietal and prefrontal cortices (PPC and PFC) at the core. However, the shared and distinct roles of these areas and the nature of their coordination in cognitive function remain poorly understood. Biophysically-based computational models of cortical circuits have provided insights into the mechanisms supporting these functions, yet they have primarily focused on the local microcircuit level, raising questions about the principles for distributed cognitive computation in multi-regional networks...
November 7, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29113103/deep-recurrent-neural-networks-for-human-activity-recognition
#9
Abdulmajid Murad, Jae-Young Pyun
Adopting deep learning methods for human activity recognition has been effective in extracting discriminative features from raw input sequences acquired from body-worn sensors. Although human movements are encoded in a sequence of successive samples in time, typical machine learning methods perform recognition tasks without exploiting the temporal correlations between input data samples. Convolutional neural networks (CNNs) address this issue by using convolutions across a one-dimensional temporal sequence to capture dependencies among input data...
November 6, 2017: Sensors
https://www.readbyqxmd.com/read/29111657/nanoporous-tinb2o7-c-composite-microspheres-with-three-dimensional-conductive-network-for-long-cycle-life-and-high-rate-capability-anode-materials-for-lithium-ion-batteries
#10
Guozhen Zhu, Qing Li, Yunhao Zhao, Renchao Che
On the basis of the advantages of ideal cycling stability, high discharge voltage (1.65 V), and excellent reversibility, more and more attention has been focused on TiNb2O7 (marked as TNO) as an anode material candidate for lithium-ion batteries. However, the poor electronic conductivity and low ionic diffusion rate intrinsically restrict its practical use. Herein, we first synthesize the TNO/C composite microspheres with three-dimensionally (marked as 3D) electro-conductive carbon network and abundant nanoporous structure by a simple spray-drying method...
November 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29109256/gpcr-controlled-membrane-recruitment-of-negative-regulator-c2gap1-locally-inhibits-ras-signaling-for-adaptation-and-long-range-chemotaxis
#11
Xuehua Xu, Xi Wen, Douwe M Veltman, Ineke Keizer-Gunnink, Henderikus Pots, Arjan Kortholt, Tian Jin
Eukaryotic cells chemotax in a wide range of chemoattractant concentration gradients, and thus need inhibitory processes that terminate cell responses to reach adaptation while maintaining sensitivity to higher-concentration stimuli. However, the molecular mechanisms underlying inhibitory processes are still poorly understood. Here, we reveal a locally controlled inhibitory process in a GPCR-mediated signaling network for chemotaxis in Dictyostelium discoideum We identified a negative regulator of Ras signaling, C2GAP1, which localizes at the leading edge of chemotaxing cells and is activated by and essential for GPCR-mediated Ras signaling...
November 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29108906/phylogeography-and-connectivity-of-molluscan-parasites-perkinsus-spp-in-panama-and-beyond
#12
Katrina M Pagenkopp Lohan, Kristina M Hill-Spanik, Mark E Torchin, Robert C Fleischer, Ryan B Carnegie, Kimberly S Reece, Gregory M Ruiz
Panama is a major hub for commercial shipping between two oceans, making it an ideal location to examine parasite biogeography, potential invasions, and the spread of infectious agents. Our goals were to (i) characterise the diversity and genetic connectivity of Perkinsus spp. haplotypes across the Panamanian Isthmus and (ii) combine these data with sequences from around the world to evaluate the current phylogeography and genetic connectivity of these widespread molluscan parasites. We collected 752 bivalves from 12 locations along the coast of Panama including locations around the Bocas del Toro archipelago and the Caribbean and Pacific entrances to the Panama Canal, from December 2012 to February 2013...
November 3, 2017: International Journal for Parasitology
https://www.readbyqxmd.com/read/29102798/three-dimensional-fabrication-of-thick-and-densely-populated-soft-constructs-with-complex-and-actively-perfused-channel-network
#13
C Rodrigo Pimentel, Suk Kyu Ko, Claudia Caviglia, Anders Wolff, Jenny Emnéus, Stephan Sylvest Keller, Martin Dufva
One of the fundamental steps needed to design functional tissues and, ultimately organs is the ability to fabricate thick and densely populated tissue constructs with controlled vasculature and microenvironment. To date, bioprinting methods have been employed to manufacture tissue constructs with open vasculature in a square-lattice geometry, where the majority lacks the ability to be directly perfused. Moreover, it appears to be difficult to fabricate vascular tissue constructs targeting the stiffness soft tissues such as the liver...
November 1, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29100013/long-range-gabaergic-inputs-regulate-neural-stem-cell-quiescence-and-control-adult-hippocampal-neurogenesis
#14
Hechen Bao, Brent Asrican, Weidong Li, Bin Gu, Zhexing Wen, Szu-Aun Lim, Issac Haniff, Charu Ramakrishnan, Karl Deisseroth, Benjamin Philpot, Juan Song
The quiescence of adult neural stem cells (NSCs) is regulated by local parvalbumin (PV) interneurons within the dentate gyrus (DG). Little is known about how local PV interneurons communicate with distal brain regions to regulate NSCs and hippocampal neurogenesis. Here, we identify GABAergic projection neurons from the medial septum (MS) as the major afferents to dentate PV interneurons. Surprisingly, dentate PV interneurons are depolarized by GABA signaling, which is in sharp contrast to most mature neurons hyperpolarized by GABA...
November 2, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/29096205/stochastic-spike-synchronization-in-a-small-world-neural-network-with-spike-timing-dependent-plasticity
#15
Sang-Yoon Kim, Woochang Lim
We consider the Watts-Strogatz small-world network (SWN) consisting of subthreshold neurons which exhibit noise-induced spikings. This neuronal network has adaptive dynamic synaptic strengths governed by the spike-timing-dependent plasticity (STDP). In previous works without STDP, stochastic spike synchronization (SSS) between noise-induced spikings of subthreshold neurons was found to occur in a range of intermediate noise intensities. Here, we investigate the effect of additive STDP on the SSS by varying the noise intensity...
October 12, 2017: Neural Networks: the Official Journal of the International Neural Network Society
https://www.readbyqxmd.com/read/29091783/neurodevelopmental-outcome-in-prenatally-diagnosed-isolated-agenesis-of-the-corpus-callosum
#16
Lise Folliot-Le Doussal, Alexandra Chadie, Marie Brasseur-Daudruy, Eric Verspyck, Pascale Saugier-Veber, Stéphane Marret
Neurodevelopmental outcome in children with agenesis of the corpus callosum (ACC) is correlated with the presence or absence of associated brain abnormalities. Indeed, neurodevelopmental outcome shows severe disabilities when the ACC is not isolated whereas in isolated forms, the neurologic development is mainly normal. Contrary to data in several published studies, the prognosis remains uncertain even in isolated forms, which may lead in France to medical termination of pregnancy. OBJECTIVE: To evaluate long-term neurodevelopmental outcome in children with prenatally diagnosed isolated ACC...
October 29, 2017: Early Human Development
https://www.readbyqxmd.com/read/29089870/tunneling-nanotubes-and-gap-junctions-their-role-in-long-range-intercellular-communication-during-development-health-and-disease-conditions
#17
REVIEW
Jennifer Ariazi, Andrew Benowitz, Vern De Biasi, Monique L Den Boer, Stephanie Cherqui, Haifeng Cui, Nathalie Douillet, Eliseo A Eugenin, David Favre, Spencer Goodman, Karine Gousset, Dorit Hanein, David I Israel, Shunsuke Kimura, Robert B Kirkpatrick, Nastaran Kuhn, Claire Jeong, Emil Lou, Robbie Mailliard, Stephen Maio, George Okafo, Matthias Osswald, Jennifer Pasquier, Roel Polak, Gabriele Pradel, Bob de Rooij, Peter Schaeffer, Vytenis A Skeberdis, Ian F Smith, Ahmad Tanveer, Niels Volkmann, Zhenhua Wu, Chiara Zurzolo
Cell-to-cell communication is essential for the organization, coordination, and development of cellular networks and multi-cellular systems. Intercellular communication is mediated by soluble factors (including growth factors, neurotransmitters, and cytokines/chemokines), gap junctions, exosomes and recently described tunneling nanotubes (TNTs). It is unknown whether a combination of these communication mechanisms such as TNTs and gap junctions may be important, but further research is required. TNTs are long cytoplasmic bridges that enable long-range, directed communication between connected cells...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/29089367/influence-of-social-relationship-domains-and-their-combinations-on-incident-dementia-a-prospective-cohort-study
#18
Tami Saito, Chiyoe Murata, Masashige Saito, Tokunori Takeda, Katsunori Kondo
BACKGROUND: Social relationships consist of mutually related but distinct dimensions. It remains unclear how these domains independently contribute to incident dementia. This large-scale, prospective cohort study examines associations between the social relationship domains as well as their combinations and incident dementia among community-dwelling older adults. METHODS: We analysed data from 13 984 community-dwelling adults aged 65+ without long-term care needs living in Aichi prefecture in Japan...
October 31, 2017: Journal of Epidemiology and Community Health
https://www.readbyqxmd.com/read/29084214/a-systems-level-approach-to-temporal-expression-dynamics-in-drosophila-reveals-clusters-of-long-term-memory-genes
#19
Julianna Bozler, Balint Z Kacsoh, Hao Chen, William E Theurkauf, Zhiping Weng, Giovanni Bosco
The ability to integrate experiential information and recall it in the form of memory is observed in a wide range of taxa, and is a hallmark of highly derived nervous systems. Storage of past experiences is critical for adaptive behaviors that anticipate both adverse and positive environmental factors. The process of memory formation and consolidation involve many synchronized biological events including gene transcription, protein modification, and intracellular trafficking: However, many of these molecular mechanisms remain illusive...
October 2017: PLoS Genetics
https://www.readbyqxmd.com/read/29082337/inference-of-cell-type-specific-regulatory-networks-on-mammalian-lineages
#20
Deborah Chasman, Sushmita Roy
Transcriptional regulatory networks are at the core of establishing cell type specific gene expression programs. In mammalian systems, such regulatory networks are determined by multiple levels of regulation, including by transcription factors, chromatin environment, and three-dimensional organization of the genome. Recent efforts to measure diverse regulatory genomic datasets across multiple cell types and tissues offer unprecedented opportunities to examine the context-specificity and dynamics of regulatory networks at a greater resolution and scale than before...
April 2017: Current opinion in systems biology
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