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https://www.readbyqxmd.com/read/29346734/fluctuation-effects-on-the-brush-structure-of-mixed-brush-nanoparticles-in-solution
#1
Jason P Koski, Amalie L Frischknecht
A potentially attractive way to control nanoparticle assembly is to graft one or more polymers on the nanoparticle, to control the nanoparticle-nanoparticle interactions. When two immiscible polymers are grafted on the nanoparticle, they can microphase separate to form domains at the nanoparticle surface. Here we computationally investigate the phase behavior of such binary mixed brush nanoparticles in solution, across a large and experimentally relevant parameter space. Specifically, we calculate the mean-field phase diagram, assuming uniform grafting of the two polymers, as a function of the nanoparticle size relative to the length of the grafted chains, the grafting density, the enthalpic repulsion between the grafted chains, and the solvent quality...
January 18, 2018: ACS Nano
https://www.readbyqxmd.com/read/29346704/usefulness-of-live-real-time-three-four-dimensional-transesophageal-echocardiography-in-the-percutaneous-closure-of-an-iatrogenic-aorto-right-ventricular-fistula
#2
Tuğba Kemaloğlu Öz, Corrado Fiore, Tayfun Gürol, Tufan Şener, Özer Soylu, Bahadır Dağdeviren, Amier Ahmad, Navin C Nanda
The development of an aorto-right ventricular fistula is a rare complication of cardiac surgery. The most common treatment is surgical closure of the fistula, but percutaneous closure of the fistula has become an attractive alternative option. We present a case of successful utilization of live/real time three/four-dimensional transoesophageal echocardiography (3/4DTEE) to select the correct device size for percutaneous closure of an adult patient presenting with an aorto-right ventricular (AO-RV) fistula following aortic valve replacement...
January 18, 2018: Echocardiography
https://www.readbyqxmd.com/read/29346521/the-intracellular-and-intercellular-cross-talk-during-subsidiary-cell-formation-in-zea-mays-existing-and-novel-components-orchestrating-cell-polarization-and-asymmetric-division
#3
P Apostolakos, P Livanos, E Giannoutsou, E Panteris, B Galatis
Background: Formation of stomatal complexes in Poaceae is the outcome of three asymmetric and one symmetric cell division occurring in particular leaf protodermal cells. In this definite sequence of cell division events, the generation of subsidiary cells is of particular importance and constitutes an attractive model for studying local intercellular stimulation. In brief, an induction stimulus emitted by the guard cell mother cells (GMCs) triggers a series of polarization events in their laterally adjacent protodermal cells...
January 15, 2018: Annals of Botany
https://www.readbyqxmd.com/read/29346453/yearly-fluctuations-of-flower-landscape-in-a-mediterranean-scrubland-consequences-for-floral-resource-availability
#4
Víctor Flo, Jordi Bosch, Xavier Arnan, Clara Primante, Ana M Martín González, Helena Barril-Graells, Anselm Rodrigo
Species flower production and flowering phenology vary from year to year due to extrinsic factors. Inter-annual variability in flowering patterns may have important consequences for attractiveness to pollinators, and ultimately, plant reproductive output. To understand the consequences of flowering pattern variability, a community approach is necessary because pollinator flower choice is highly dependent on flower context. Our objectives were: 1) To quantify yearly variability in flower density and phenology; 2) To evaluate whether changes in flowering patterns result in significant changes in pollen/nectar composition...
2018: PloS One
https://www.readbyqxmd.com/read/29346436/bone-marrow-concentrate-promotes-bone-regeneration-with-a-suboptimal-dose-of-rhbmp-2
#5
Kazuhiro Egashira, Yoshinori Sumita, Weijian Zhong, Takashi I, Seigo Ohba, Kazuhiro Nagai, Izumi Asahina
Bone marrow concentrate (BMC), which is enriched in mononuclear cells (MNCs) and platelets, has recently attracted the attention of clinicians as a new optional means for bone engineering. We previously reported that the osteoinductive effect of bone morphogenetic protein-2 (BMP-2) could be enhanced synergistically by co-transplantation of peripheral blood (PB)-derived platelet-rich plasma (PRP). This study aims to investigate whether BMC can effectively promote bone formation induced by low-dose BMP-2, thereby reducing the undesirable side-effects of BMP-2, compared to PRP...
2018: PloS One
https://www.readbyqxmd.com/read/29346426/proliferation-and-survival-of-human-amniotic-epithelial-cells-during-their-hepatic-differentiation
#6
Julieta L Maymó, Rodrigo Riedel, Antonio Pérez-Pérez, Marta Magatti, Bernardo Maskin, José Luis Dueñas, Ornella Parolini, Víctor Sánchez-Margalet, Cecilia L Varone
Stem cells derived from placental tissues are an attractive source of cells for regenerative medicine. Amniotic epithelial cells isolated from human amnion (hAECs) have desirable and competitive characteristics that make them stand out between other stem cells. They have the ability to differentiate toward all three germ layers, they are not tumorigenic and they have immunosuppressive properties. Although liver transplantation is the best way to treat acute and chronic hepatic failure patients, there are several obstacles...
2018: PloS One
https://www.readbyqxmd.com/read/29346387/inferring-the-risk-factors-behind-the-geographical-spread-and-transmission-of-zika-in-the-americas
#7
Lauren M Gardner, András Bóta, Karthik Gangavarapu, Moritz U G Kraemer, Nathan D Grubaugh
BACKGROUND: An unprecedented Zika virus epidemic occurred in the Americas during 2015-2016. The size of the epidemic in conjunction with newly recognized health risks associated with the virus attracted significant attention across the research community. Our study complements several recent studies which have mapped epidemiological elements of Zika, by introducing a newly proposed methodology to simultaneously estimate the contribution of various risk factors for geographic spread resulting in local transmission and to compute the risk of spread (or re-introductions) between each pair of regions...
January 18, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29345948/matched-coupling-of-propargylic-carbonates-with-cyclopropanols
#8
Penglin Wu, Minqiang Jia, Weilong Lin, Shengming Ma
The ring opening-coupling reaction of cyclopropanols with propargylic carbonates affording synthetically attractive allenyl ketones has been developed. The mechanism involves the ligand-exchange reaction of in situ formed allenyl palladium methoxide with cyclopropanols followed by carbon-carbon bond cleavage and reductive elimination. The reactions proceeded smoothly under mild reaction conditions with Pd(0)/XPhos catalysis in the absence of any external base and displayed a wide scope and application to a steroidal skeleton...
January 18, 2018: Organic Letters
https://www.readbyqxmd.com/read/29345915/the-effect-of-water-on-quinone-redox-mediators-in-nonaqueous-li-o2-batteries
#9
Tao Liu, James T Frith, Gunwoo Kim, Rachel N Kerber, Nicolas Dubouis, Yuanlong Shao, Zigeng Liu, Pieter C M M Magusin, Michael T L Casford, Nuria Garcia-Araez, Clare P Grey
The parasitic reactions associated with reduced oxygen species and the difficulty in achieving the high theoretical capacity have been major issues plaguing development of practical nonaqueous Li-O2 batteries. We hereby address the above issues by exploring the synergistic effect of 2,5-di-tert-butyl-1,4-benzoquinone and H2O on the oxygen chemistry in a nonaqueous Li-O2 battery. Water stabilizes the quinone monoanion and dianion, shifting the reduction potentials of the quinone and monoanion to more positive values (vs Li/Li+)...
January 18, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29345799/self-criticism-self-report-measures-systematic-review
#10
REVIEW
Alexandra V Rose, Katharine A Rimes
PURPOSE: Self-criticism is a transdiagnostic process that has been attracting research and clinical interest. The accurate measurement of this construct is therefore crucial; however, there are currently numerous measures of self-criticism and no guidelines about which to use in different contexts. This systematic review evaluated the measurement properties of self-report questionnaires of self-criticism. METHODS: OvidSP and Web of Science were used to search through multiple databases, and an initial grey literature search was completed...
January 18, 2018: Psychology and Psychotherapy
https://www.readbyqxmd.com/read/29345643/the-evolution-of-attraction-rare-brains-and-how-to-hack-time-books-in-brief
#11
Barbara Kiser
No abstract text is available yet for this article.
January 18, 2018: Nature
https://www.readbyqxmd.com/read/29345593/antithrombotic-therapy-after-tavr
#12
Tobias Geisler, Michal Droppa, Karin Mueller, Oliver Borst
Transvascular aortic valve replacement (TAVR) has emerged as a treatment option in patients with severe aortic stenosis who are inoperable and has recently been evaluated in patients with intermediate surgical risk. The number of procedures is increasing worldwide in parallel with the demographic changes in industrial countries. The risk for cerebral embolism is of main concern and represents a major determinant for prognosis and quality of live after TAVR. The empiric antithrombotic therapy consists of dual antiplatelet therapy (DAPT); however the risk-benefit of this approach is lacking evidence from randomized, placebo-controlled trials regarding choice and duration of antithrombotic treatment...
January 17, 2018: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/29345592/prolonging-ticagrelor-beyond-a-year-of-acute-coronary-syndrome-worth-or-harmful
#13
Daniel Aradi, Dome Dezsi, Gabor Veress, Bela Merkely
Platelet activation plays a central role in triggering and complicating acute coronary syndromes, especially in case of stent thrombosis and myocardial infarction. On top of aspirin, P2Y12-inhibitors are successfully used to treat and prevent these events for a duration of one year after an acute coronary episode or 6 months after drug-eluting stent implantation. However, patients with acute coronary syndromes remain at heightened risk for recurrent ischemic events after the recommended durations of P2Y12-inhibitors and therefore, prolonging treatment is often considered in clinical practice...
January 16, 2018: Current Vascular Pharmacology
https://www.readbyqxmd.com/read/29345572/breaking-the-dna-damage-response-via-serine-threonine-kinase-inhibitors-to-improve-cancer-treatment
#14
Wioletta Rozpedek, Dariusz Pytel, Alicja Nowak-Zdunczyk, Dawid Lewko, Radoslaw Wojtczak, John Alan Diehl, Ireneusz Majsterek
Multiple, both endogenous and exogenous, sources may induce DNA damage and DNA replication stress. Cells have developed DNA damage response (DDR) signaling pathways to maintain genomic stability and effectively detect and repair DNA lesions. Serine/threonine kinases such as Ataxia-telangiectasia mutated (ATM) and Ataxia-telangiectasia and Rad3-Related (ATR) are the major regulators of DDR, since after sensing stalled DNA replication forks, DNA double- or single-strand breaks, may directly phosphorylate and activate their downstream targets, that play a key role in DNA repair, cell cycle arrest and apoptotic cell death...
January 16, 2018: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/29345536/uasb-septic-tank-as-an-alternative-for-decentralized-wastewater-treatment-in-mexico
#15
Ángel L Santiago-Díaz, Julisa García-Albortante, Mónica L Salazar-Peláez
The aim of this work was to evaluate the performance of a UASB-septic tank as a decentralized treatment of high strength municipal wastewater, under two different HRTs (48 and 72h). Thus, a lab scale (44.85L) UASB-septic tank constituted by three compartments was operated under HRT 72h and 48h. Removal efficiencies of total COD, BOD5 and suspended solids ranged from 60% to 80% for the first two parameters and from 70% to 90% for the last one. According to the statistical analysis, it was established that decreasing HRT from 72h to 48h did not affect the performance of the UASB-septic tank; therefore, the latter HRT is recommended to be used for operation...
January 18, 2018: Environmental Technology
https://www.readbyqxmd.com/read/29345531/how-tailoring-the-mode-of-information-presentation-influences-younger-and-older-adults-satisfaction-with-health-websites
#16
Minh Hao Nguyen, Ellen M A Smets, Nadine Bol, Eugène F Loos, Julia C M Van Weert
Although older adults are increasingly using online health information, many websites are not senior-friendly, which might lead to user-problems and dissatisfaction among older people. It has been suggested that websites targeted at older adults should take into account age-related abilities and limitations, for example by providing the opportunity to adjust the modality (i.e., "mode") of information presentation based on visual and auditory capabilities. This study investigates the effects of a mode-tailored website, allowing users to self-tailor the mode of information presentation, on younger and older adults' satisfaction with health websites...
January 18, 2018: Journal of Health Communication
https://www.readbyqxmd.com/read/29345524/recovery-and-performance-in-sport-consensus-statement
#17
Michael Kellmann, Maurizio Bertollo, Laurent Bosquet, Michel Brink, Aaron Coutts, Rob Duffield, Daniel Erlacher, Shona Halson, Anne Hecksteden, Jahan Heidari, Romain Meeusen, Iñigo Mujika, Claudio Robazza, Sabrina Skorski, Ranel Venter, Jürgen Beckmann
The relationship between recovery and fatigue and its impact on performance has attracted the interest of sports science for many years. An adequate balance between stress (training and competition load, other life demands) and recovery is essential for athletes to achieve continuous high-level performance. Research has focused on the examination of physiological and psychological recovery strategies to compensate external and internal training and competition loads. A systematic monitoring of recovery and the subsequent implementation of recovery routines aims at maximizing performance and preventing negative developments such as underrecovery, non-functional overreaching, the overtraining syndrome, injuries, or illnesses...
January 18, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29345482/subjects-adjust-criterion-on-errors-in-perceptual-decision-tasks
#18
Peter R Killeen, Thomas J Taylor, Mario Treviño
The optimal strategy in detection theory is to partition the decision axis at a criterion C, labeling all events that score above C "Signal", and all those that fall below "Noise." The optimal position of C, C*, depends on signal probability and payoffs. If observers place their criterion at some place other than C*, they suffer a loss in the Expected Value (EV) of payoffs over the course of many decisions. We provide an explicit equation for the degree of loss, where it is shown that the falloff in value will be steep in contexts of good discrimination and will be a flatter gradient in contexts of poor discrimination...
January 2018: Psychological Review
https://www.readbyqxmd.com/read/29345460/low-cost-room-temperature-synthesis-of-nav3o8-1-69h2o-nanobelts-for-mg-batteries
#19
Muhammad Rashad, Hongzhang Zhang, Muhammad Asif, Kai Feng, Xianfeng Li, Huamin Zhang
Potentially safe and economically feasible magnesium batteries (MBs) have attracted tremendous research attention as an alternative to high cost and unsafe lithium ion batteries (LIBs). In current work, for the first time, we report a novel room temperature approach to dope atomic species sodium between the vanadium oxide crystal lattice to obtain NaV3O8.1.69H2O (NVO) nanobelts. Synthesized NVO nanobelts are used as electrode material for MBs. The MBs cells demonstrate stable discharge specific capacity of 110 mA h g-1 at a current density of 10 mA g-1 and a high cyclic stability i...
January 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29345419/targeting-bcl2-gene-promoter-g-quadruplex-with-a-new-class-of-furopyridazinone-based-molecules
#20
Jussara Amato, Alessia Pagano, Domenica Capasso, Sonia Di Gaetano, Mariateresa Giustiniano, Ettore Novellino, Antonio Randazzo, Bruno Pagano
Targeting of G-quadruplex-forming DNA in BCL2 gene promoter to inhibit the expression of anti-apoptotic Bcl-2 protein represents an attractive opportunity in cancer treatment. So far, efforts made in the discovery of molecules able to target BCL2 G-quadruplex mainly succeeded in the identification of ligands with poor drug-like properties. Here, a small series of furo[2,3-d]pyridazin-4(5H)-one derivatives were evaluated as a new class of drug-like G-quadruplex-targeting compounds. Biophysical studies showed that two derivatives could effectively bind to BCL2 G-quadruplex with good selectivity...
January 18, 2018: ChemMedChem
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