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https://www.readbyqxmd.com/read/28734312/diffusion-quantum-monte-carlo-calculations-of-srfeo3-and-lafeo3
#1
Juan A Santana, Jaron T Krogel, Paul R C Kent, Fernando A Reboredo
The equations of state, formation energy, and migration energy barrier of the oxygen vacancy in SrFeO3 and LaFeO3 were calculated with the diffusion quantum Monte Carlo (DMC) method. Calculations were also performed with various Density Functional Theory (DFT) approximations for comparison. DMC reproduces the measured cohesive energies of these materials with errors below 0.23(5) eV and the structural properties within 1% of the experimental values. The DMC formation energies of the oxygen vacancy in SrFeO3 and LaFeO3 under oxygen-rich conditions are 1...
July 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28734076/ensemble-characterization-of-an-intrinsically-disordered-fg-nup-peptide-and-its-f-a-mutant-in-dmso-d6
#2
Korey M Reid, Punnepalli Sunanda, S Raghothama, V V Krishnan
Intrinsically disordered proteins (IDP) lack a well-defined 3D-structure under physiological conditions, yet, the inherent disorder represented by an ensemble of conformation plays a critical role in many cellular and regulatory processes. Nucleoporins, or Nups, are the proteins found in the nuclear pore complex (NPC). The central pore of the NPC is occupied by Nups, which have phenylalanine-glycine domain repeats and are intrinsically disordered, and therefore are termed FG-Nups. These FG-domain repeats exhibit differing cohesiveness character and differ from least (FG) to most (GLFG) cohesive...
July 22, 2017: Biopolymers
https://www.readbyqxmd.com/read/28732313/biomechanics-of-cell-rearrangements-in-drosophila
#3
REVIEW
Boris Guirao, Yohanns Bellaïche
To acquire their adequate size and shape, living tissues grow and substantially deform as they develop. To do so, the cells making up the tissue can grow and deform as well, but they can also divide, intercalate and die. Among those cell behaviors, cell intercalation, also named cell rearrangement, is a major contributor to the morphogenesis of many cohesive tissues since it enables tissues to drastically deform as they develop while keeping their cohesiveness and avoiding extreme deformation of their cells...
July 18, 2017: Current Opinion in Cell Biology
https://www.readbyqxmd.com/read/28732005/filamin-actin-binding-and-titin-binding-fulfill-distinct-functions-in-z-disc-cohesion
#4
Nicanor González-Morales, Tristan K Holenka, Frieder Schöck
Many proteins contribute to the contractile properties of muscles, most notably myosin thick filaments, which are anchored at the M-line, and actin thin filaments, which are anchored at the Z-discs that border each sarcomere. In humans, mutations in the actin-binding protein Filamin-C result in myopathies, but the underlying molecular function is not well understood. Here we show using Drosophila indirect flight muscle that the filamin ortholog Cheerio in conjunction with the giant elastic protein titin plays a crucial role in keeping thin filaments stably anchored at the Z-disc...
July 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28731758/noncontact-cohesive-swimming-of-bacteria-in-two-dimensional-liquid-films
#5
Ye Li, He Zhai, Sandra Sanchez, Daniel B Kearns, Yilin Wu
Bacterial swimming in confined two-dimensional environments is ubiquitous in nature and in clinical settings. Characterizing individual interactions between swimming bacteria in 2D confinement will help to understand diverse microbial processes, such as bacterial swarming and biofilm formation. Here we report a novel motion pattern displayed by flagellated bacteria in 2D confinement: When two nearby cells align their moving directions, they tend to engage in cohesive swimming without direct cell body contact, as a result of hydrodynamic interaction but not flagellar intertwining...
July 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28731503/impact-of-soybean-aging-conditions-on-tofu-sensory-characteristics-and-acceptance
#6
Neide Kiyoko Kondo Kamizake, Lilian Catarini Pereira Silva, Sandra Helena Prudencio
BACKGROUND: Tofu from aged soybeans has poor quality, mainly texture. Texture defects related in literature are contradictory. No study has approached all sensory properties simultaneously. The objective of this study was to evaluate the effect of soybean aging conditions (natural: ambient temperature and RH, 18 months, and accelerated: 30 °C, 84% RH, 6 months) on all the sensory characteristics and acceptance of tofu. Texture and color were also evaluated by instrumental method. Control condition was -20 °C, 47% RH...
July 21, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28731477/cohesion-a-method-for-quantifying-the-connectivity-of-microbial-communities
#7
Cristina M Herren, Katherine D McMahon
The ability to predict microbial community dynamics lags behind the quantity of data available in these systems. Most predictive models use only environmental parameters, although a long history of ecological literature suggests that community complexity should also be an informative parameter. Thus, we hypothesize that incorporating information about a community's complexity might improve predictive power in microbial models. Here, we present a new metric, called community 'cohesion,' that quantifies the degree of connectivity of a microbial community...
July 21, 2017: ISME Journal
https://www.readbyqxmd.com/read/28731002/neuropathogenesis-by-chandipura-virus-an-acute-encephalitis-syndrome-in-india
#8
REVIEW
Sourish Ghosh, Anirban Basu
Chandipura virus (CHPV) has been contributing to the rising number of premature deaths due to acute encephalitis syndrome for over a decade in India. CHPV belongs to the family Rhabdoviridae. Neuropathogenesis of CHPV has been well established but the exact route of entry into the central nervous system (CNS) and the triggering factor for neuronal death are still unknown. Rabies virus and vesicular stomatitis virus, which are related closely to CHPV, enter the CNS retrogradely from peripheral or olfactory neurons...
January 2017: National Medical Journal of India
https://www.readbyqxmd.com/read/28729861/comparative-omics-and-trait-analyses-of-marine-pseudoalteromonas-phages-advance-the-phage-otu-concept
#9
Melissa B Duhaime, Natalie Solonenko, Simon Roux, Nathan C Verberkmoes, Antje Wichels, Matthew B Sullivan
Viruses influence the ecology and evolutionary trajectory of microbial communities. Yet our understanding of their roles in ecosystems is limited by the paucity of model systems available for hypothesis generation and testing. Further, virology is limited by the lack of a broadly accepted conceptual framework to classify viral diversity into evolutionary and ecologically cohesive units. Here, we introduce genomes, structural proteomes, and quantitative host range data for eight Pseudoalteromonas phages isolated from Helgoland (North Sea, Germany) and use these data to advance a genome-based viral operational taxonomic unit (OTU) definition...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28729734/a-role-for-microbial-selection-in-frescoes-deterioration-in-tomba-degli-scudi-in-tarquinia-italy
#10
Maria Cristina Tomassetti, Angela Cirigliano, Chiara Arrighi, Rodolfo Negri, Francesco Mura, Maria Lorella Maneschi, Maria Donatella Gentili, Mariarita Stirpe, Cristina Mazzoni, Teresa Rinaldi
Mural paintings in the hypogeal environment of the Tomba degli Scudi in Tarquinia, Italy, show a quite dramatic condition: the plaster mortar lost his cohesion and a white layer coating is spread over almost all the wall surfaces. The aim of this research is to verify if the activity of microorganisms could be one of the main causes of deterioration and if the adopted countermeasures (conventional biocide treatments) are sufficient to stop it. A biocide treatment of the whole environment has been carried out before the conservative intervention and the tomb has been closed for one month...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729434/cohesins-and-condensins-orchestrate-the-4d-dynamics-of-yeast-chromosomes-during-the-cell%C3%A2-cycle
#11
Luciana Lazar-Stefanita, Vittore F Scolari, Guillaume Mercy, Héloise Muller, Thomas M Guérin, Agnès Thierry, Julien Mozziconacci, Romain Koszul
Duplication and segregation of chromosomes involves dynamic reorganization of their internal structure by conserved architectural proteins, including the structural maintenance of chromosomes (SMC) complexes cohesin and condensin. Despite active investigation of the roles of these factors, a genome-wide view of dynamic chromosome architecture at both small and large scale during cell division is still missing. Here, we report the first comprehensive 4D analysis of the higher-order organization of the Saccharomyces cerevisiae genome throughout the cell cycle and investigate the roles of SMC complexes in controlling structural transitions...
July 20, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28728423/changing-antibiotic-prescribing-in-a-primary-care-network-the-role-of-readiness-to-change-and-group-dynamics-in-success
#12
Suratha Elango, Julia E Szymczak, Ian M Bennett, Rinad S Beidas, Rachel M Werner
Overuse of broad-spectrum antibiotics in outpatient pediatrics remains a significant issue and there is limited evidence on how to effectively implement outpatient stewardship interventions. This study examines the relationship between readiness to change and modifiable factors affecting success of a primary care network antibiotic stewardship intervention. A survey designed to measure readiness to accept a health care innovation was administered to 209 clinicians. Practices were split in half into "high" versus "low" readiness to change...
July 1, 2017: American Journal of Medical Quality: the Official Journal of the American College of Medical Quality
https://www.readbyqxmd.com/read/28728412/role-of-interfaces-in-the-elasticity-and-failure-of-clay-organic-nanocomposites-toughening-upon-interface-weakening
#13
Gyorgy Hantal, Laurent Brochard, Roland J-M Pellenq, Franz-Josef Ulm, Benoit Coasne
Synthetic organic-inorganic composites constitute a new class of engineering materials finding applications in an increasing range of fields. The interface between the constituting phases plays a pivotal role in the enhancement of mechanical properties. In exfoliated clay-organic nanocomposites, individual, high aspect ratio clay sheets are dispersed in the organic matrix providing large interfaces and hence efficient stress transfer. In this study, we aim at elucidating molecular-scale reinforcing mechanisms in a series of model clay-organic composite systems by means of reactive molecular simulations...
July 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28728404/quality-of-steak-restructured-from-beef-trimmings-containing-microbial-transglutaminase-and-impacted-by-freezing-and-grading-by-fat-level
#14
Supaluk Sorapukdee, Pussadee Tangwatcharin
Objective: The objective of this research was to evaluate the physico-chemical, microbiological and sensorial qualities of restructured steaks processed from beef trimmings (grade I and II) and frozen beef (fresh beef as control and frozen beef). Method: Beef trimmings from commercial butcher were collected, designated into 4 treatments differed in beef trimmings grade and freezing, processed into restructured steaks with 1% microbial transglutaminase and then analyzed product quality...
July 17, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28727495/localization-of-pp2a-b56-to-centromeres-in-drosophila
#15
Emil Peter Thrane Hertz, Jakob Nilsson
Protection of chromosome cohesion through Shugoshin-dependent recruitment of the PP2A-B56 phosphatase to the pericentromeric region has become a cornerstone of the chromosome segregation model in eukaryotes. Shugoshin is essential for meiotic chromosome segregation in all tested eukaryotes but only found to be essential for mitotic chromosome segregation in vertebrates. Nishiyama and colleagues have now found that the protein Dalmatian, an ortholog of the vertebrate cohesion regulator Sororin, performs the function of Shugoshin in Drosophila melanogaster by recruiting PP2A-B56 to the pericentromeric region supporting an unified model of mitotic chromosome segregation in the animal kingdom...
July 19, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28726641/a-plant-fungal-type-phosphoenolpyruvate-carboxykinase-located-in-the-parasite-mitochondrion-ensures-glucose-independent-survival-of-toxoplasma-gondii
#16
Richard Nitzsche, Özlem Günay-Esiyok, Maximilian Tischer, Vyacheslav Zagoriy, Nishith Gupta
Toxoplasma gondii is considered as one of the most successful intracellular pathogens, because it can reproduce in varied nutritional milieus, encountered in diverse host-cell types of essentially any warm-blooded organism. Our earlier work has demonstrated that the acute (tachyzoite) stage of T. gondii depends on cooperativity of glucose and glutamine catabolism to meet biosynthetic demands. Either of these two nutrients can sustain the parasite survival; however, what determines the metabolic plasticity has not been resolved yet...
July 18, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28725492/role-of-spousal-involvement-in-continuous-positive-airway-pressure-cpap-adherence-in-patients-with-obstructive-sleep-apnea-osa
#17
Salma Batool-Anwar, Carol M Baldwin, Shira Fass, Stuart F Quan
INTRODUCTION: Little is known about the impact of spousal involvement on continuous positive airway pressure (CPAP) adherence. The aim of this study was to determine whether spouse involvement affects adherence with CPAP therapy, and how this association varies with gender. METHODS: 194 subjects recruited from Apnea Positive Pressure Long Term Efficacy Study (APPLES) completed the Dyadic Adjustment Scale (DAS). The majority of participants were Caucasian (83%), and males (73%), with mean age of 56 years, mean BMI of 31 kg/m(2)...
May 2017: Southwest Journal of Pulmonary & Critical Care
https://www.readbyqxmd.com/read/28725442/identification-of-dust-storm-origin-in-south-west-of-iran
#18
Parya Broomandi, Bahram Dabir, Babak Bonakdarpour, Yousef Rashidi
BACKGROUND: Deserts are the main sources of emitted dust, and are highly responsive to wind erosion. Low content of soil moisture and lack of vegetation cover lead to fine particle's release. One of the semi-arid bare lands in Iran, located in the South-West of Iran in Khoozestan province, was selected to investigate Sand and Dust storm potential. METHODS: This paper focused on the metrological parameters of the sampling site, their changes and the relationship between these changes and dust storm occurrence, estimation of Reconaissance Drought Index, the Atterberg limits of soil samples and their relation with soil erosion ability, the chemical composition, size distribution of soil and airborne dust samples, and estimation of vertical mass flux by COMSALT through considering the effect of saffman force and interparticle cohesion forces during warm period (April-September) in 2010...
2017: Journal of Environmental Health Science & Engineering
https://www.readbyqxmd.com/read/28723999/moving-towards-south-south-international-health-debts-and-challenges-in-the-regional-health-agenda
#19
María Belén Herrero
The aim of this paper is twofold. First, it aims to investigate the increased interest in health as an important dimension of the foreign policy and diplomatic concerns together with the emergence of a new framework for regional health integration and regional health diplomacy. Second, it seeks to understand the role and practices of new regional blocs in the field of health and whether they are conducting to the emergence of new strategies for addressing health regional policies in South America. The regional policy process relates to health as a right...
July 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28723947/the-effect-of-order-of-dwells-on-the-first-dwell-gaze-bias-for-eventually-chosen-items
#20
Takuya Onuma, Yuwadee Penwannakul, Jun Fuchimoto, Nobuyuki Sakai
The relationship between choice and eye movement has gained marked interest. The gaze bias effect, i.e., the tendency to look longer at items that are eventually chosen, has been shown to occur in the first dwell (initial cohesion of fixations for an item). In the two-alternative forced-choice (2AFC) paradigm, participants would look at one of the items first (defined as first look; FL), and they would then move and look at another item (second look; SL). This study investigated how the order in which the chosen items were looked at modulates the first dwell gaze bias effect...
2017: PloS One
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