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https://www.readbyqxmd.com/read/28219690/factors-associated-with-shorter-colonoscopy-surveillance-intervals-for-patients-with-low-risk-colorectal-adenomas-and-effects-on-outcome
#1
Joseph C Anderson, John A Baron, Dennis J Ahnen, Elizabeth L Barry, Roberd M Bostick, Carol A Burke, Robert S Bresalier, Timothy R Church, Bernard F Cole, Marcia Cruz-Correa, Adam S Kim, Leila A Mott, Robert S Sandler, Douglas J Robertson
BACKGROUND & AIMS: Endoscopists do not routinely follow guidelines to survey individuals with low-risk adenomas (LRAs, 1-2 small tubular adenomas, less than 1 cm) every 5-10 years for colorectal cancer (CRC)-many endoscopists recommend shorter surveillance intervals for these individuals. We aimed to identify reasons that endoscopists recommend shorter surveillance intervals for some individuals with LRAs and determine whether timing affects outcomes at follow-up examinations. METHODS: We collected data from 1560 individuals (45-75 years old) who participated in a prospective chemoprevention trial (of vitamin D and calcium) from 2004 through 2008...
February 17, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28211544/upper-critical-field-reaches-90%C3%A2-tesla-near-the-mott-transition-in-fulleride-superconductors
#2
Y Kasahara, Y Takeuchi, R H Zadik, Y Takabayashi, R H Colman, R D McDonald, M J Rosseinsky, K Prassides, Y Iwasa
Controlled access to the border of the Mott insulating state by variation of control parameters offers exotic electronic states such as anomalous and possibly high-transition-temperature (Tc) superconductivity. The alkali-doped fullerides show a transition from a Mott insulator to a superconductor for the first time in three-dimensional materials, but the impact of dimensionality and electron correlation on superconducting properties has remained unclear. Here we show that, near the Mott insulating phase, the upper critical field Hc2 of the fulleride superconductors reaches values as high as ∼90 T-the highest among cubic crystals...
February 17, 2017: Nature Communications
https://www.readbyqxmd.com/read/28207167/bisap-ranson-lactate-and-others-biomarkers-in-prediction-of-severe-acute-pancreatitis-in-a-european-cohort
#3
Francisco Valverde-López, Ana M Matas-Cobos, Carlos Alegría-Motte, Rita Jiménez-Rosales, Margarita Úbeda-Muñoz, Eduardo Redondo-Cerezo
BACKGROUND AND AIM: Assessing and comparing the predicting ability of some scores and biomarkers in Acute Pancreatitis (AP). METHODS: We prospectively collected data from 269 patients diagnosed of AP, admitted to Virgen de las Nieves University Hospital between June 2010 and June 2012. Blood urea nitrogen (BUN), C-reactive protein (CRP) and creatinine (Cr) were measured on admission and after 48 hours, lactate and BISAP only on admission and RANSON within the first 48 hours...
February 16, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28195579/11-670-whole-genome-sequences-representative-of-the-han-chinese-population-from-the-converge-project
#4
Na Cai, Tim B Bigdeli, Warren W Kretzschmar, Yihan Li, Jieqin Liang, Jingchu Hu, Roseann E Peterson, Silviu Bacanu, Bradley Todd Webb, Brien Riley, Qibin Li, Jonathan Marchini, Richard Mott, Kenneth S Kendler, Jonathan Flint
The China, Oxford and Virginia Commonwealth University Experimental Research on Genetic Epidemiology (CONVERGE) project on Major Depressive Disorder (MDD) sequenced 11,670 female Han Chinese at low-coverage (1.7X), providing the first large-scale whole genome sequencing resource representative of the largest ethnic group in the world. Samples are collected from 58 hospitals from 23 provinces around China. We are able to call 22 million high quality single nucleotide polymorphisms (SNP) from the nuclear genome, representing the largest SNP call set from an East Asian population to date...
February 14, 2017: Scientific Data
https://www.readbyqxmd.com/read/28191745/comparison-of-sampling-methods-to-recover-germinated-bacillus-anthracis-and-bacillus-thuringiensis-endospores-from-surface-coupons
#5
Tiffany M Mott, Jennifer L Shoe, Melissa Hunter, Amber M Woodson, Kristen A Fritts, Christopher P Klimko, Avery V Quirk, Susan L Welkos, Christopher K Cote
AIMS: In an attempt to devise decontamination methods that are both effective and minimally detrimental to the environment, we evaluated germination-induction as an enhancement to strategies for Bacillus anthracis spore decontamination. To determine an optimal method for the recovery of germinating spores from different matrices it was critical to ensure that the sampling procedures did not negatively impact the viability of the germinating spores possibly confounding the results and downstream analyses of field trial data...
February 12, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28188182/unstable-inheritance-of-45s-rrna-genes-in-arabidopsis-thaliana
#6
Fernando A Rabanal, Viktoria Nizhynska, Terezie Mandáková, Polina Yu Novikova, Martin A Lysak, Richard Mott, Magnus Nordborg
The considerable genome size variation in Arabidopsis thaliana has been shown largely to be due to copy number variation (CNV) in 45S ribosomal RNA (rRNA) genes. Surprisingly, attempts to map this variation by means of genome-wide association studies (GWAS) failed to identify either of the two likely sources, namely the nucleolar organizer regions (NORs). Instead, GWAS implicated a trans-acting locus, as if rRNA CNV was a phenotype rather than a genotype. To explain these results, we investigated the inheritance and stability of rRNA gene copy number using the variety of genetic resources available in A...
February 10, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28187772/integrating-consumer-engagement-in-health-and-medical-research-an-australian-framework
#7
Caroline L Miller, Kathy Mott, Michael Cousins, Stephanie Miller, Anne Johnson, Tony Lawson, Steve Wesselingh
BACKGROUND: Quality practice of consumer engagement is still in its infancy in many sectors of medical research. The South Australian Health and Medical Research Institute (SAHMRI) identified, early in its development, the opportunity to integrate evidence-driven consumer and community engagement into its operations. PROCESS: SAHMRI partnered with Health Consumers Alliance and consumers in evidence generation. A Partnership Steering Committee of researchers and consumers was formed for the project...
February 10, 2017: Health Research Policy and Systems
https://www.readbyqxmd.com/read/28182398/new-method-to-determine-the-schottky-barrier-in-few-layer-black-phosphorus-metal-contacts
#8
Su Yeong Lee, Won Seok Yun, J D Lee
Schottky barrier height and carrier polarity are seminal concepts for a practical device application of the interface between semiconductor and metal electrode. Investigation of those concepts is usually made by a conventional method such as the Schottky-Mott rule, incorporating the metal work function and semiconductor electron affinity, or the Fermi level pinning effect, resulting from the metal-induced gap states. Both manners are, however, basically applied to the bulk semiconductor metal contacts. To explore few-layer black phosphorus metal contacts far from the realm of bulk, we propose a new method to determine the Schottky barrier by scrutinizing the layer-by-layer phosphorus electronic structure from the first-principles calculation combined with the state-of-the-art band unfolding technique...
February 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28181521/determining-the-nature-of-the-gap-in-semiconducting-graphene
#9
J C Prestigiacomo, A Nath, M S Osofsky, S C Hernández, V D Wheeler, S G Walton, D K Gaskill
Since its discovery, graphene has held great promise as a two-dimensional (2D) metal with massless carriers and, thus, extremely high-mobility that is due to the character of the band structure that results in the so-called Dirac cone for the ideal, perfectly ordered crystal structure. This promise has led to only limited electronic device applications due to the lack of an energy gap which prevents the formation of conventional device geometries. Thus, several schemes for inducing a semiconductor band gap in graphene have been explored...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28181502/magnetism-and-local-symmetry-breaking-in-a-mott-insulator-with-strong-spin-orbit-interactions
#10
L Lu, M Song, W Liu, A P Reyes, P Kuhns, H O Lee, I R Fisher, V F Mitrović
Study of the combined effects of strong electronic correlations with spin-orbit coupling (SOC) represents a central issue in quantum materials research. Predicting emergent properties represents a huge theoretical problem since the presence of SOC implies that the spin is not a good quantum number. Existing theories propose the emergence of a multitude of exotic quantum phases, distinguishable by either local point symmetry breaking or local spin expectation values, even in materials with simple cubic crystal structure such as Ba2NaOsO6...
February 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28180211/electrochemical-impedance-analysis-of-perovskite-electrolyte-interfaces
#11
Zhen Li, Candy C Mercado, Mengjin Yang, Ethan Palay, Kai Zhu
The flat band potentials and carrier densities of spin coated and sprayed MAPbI3, FA0.85Cs0.15PbI3, and MAPbBr3 perovskite films were determined using the Mott-Schottky relation. The films developed a space charge layer and exhibited p-type conduction with a carrier concentration of ∼10(16) cm(-3) for spin coated films. Electrochemical impedance spectra showed typical space charge impedance at frequencies >1 kHz, and an exceptional high capacitance at frequency <1 kHz owing to an ion diffusion component...
February 9, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28179367/genomic-rearrangements-in-arabidopsis-considered-as-quantitative-traits
#12
Martha Imprialou, André Kahles, Joshua G Steffen, Edward J Osborne, Xiangchao Gan, Janne Lempe, Amarjit Bhomra, Eric Belfield, Anne Visscher, Robert Greenhalgh, Nicholas P Harberd, Richard Goram, Jotun Hein, Alexandre Robert-Seilaniantz, Jonathan Jones, Oliver Stegle, Paula Kover, Miltos Tsiantis, Magnus Nordborg, Gunnar Rätsch, Richard M Clark, Richard Mott
To understand the population genetics of structural variants and their effects on phenotypes, we developed an approach to mapping structural variants that segregate in a population sequenced at low coverage. We avoid calling structural variants directly. Instead, the evidence for a potential structural variant at a locus is indicated by variation in the counts of short-reads that map anomalously to that locus. These structural variant traits are treated as quantitative traits and mapped genetically, analogously to a gene expression study...
February 7, 2017: Genetics
https://www.readbyqxmd.com/read/28177960/innate-immune-response-to-burkholderia-mallei
#13
Kamal U Saikh, Tiffany M Mott
PURPOSE OF REVIEW: Burkholderia mallei is a facultative intracellular pathogen that causes the highly contagious and often the fatal disease, glanders. With its high rate of infectivity via aerosol and recalcitrance toward antibiotics, this pathogen is considered a potential biological threat agent. This review focuses on the most recent literature highlighting host innate immune response to B. mallei. RECENT FINDINGS: Recent studies focused on elucidating host innate immune responses to the novel mechanisms and virulence factors employed by B...
February 7, 2017: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/28166587/teaching-rounds-a-visual-aid-to-teaching-internal-medicine-pearls-on-the-wards-first-edition
#14
Timothy Mott
No abstract text is available yet for this article.
January 2017: Family Medicine
https://www.readbyqxmd.com/read/28166406/p-type-doping-of-gan-nanowires-characterized-by-photoelectrochemical-measurements
#15
Jumpei Kamimura, Peter Bogdanoff, Manfred Ramsteiner, Pierre Corfdir, Felix Feix, Lutz Geelhaar, Henning Riechert
GaN nanowires (NWs) doped with Mg as a p-type impurity were grown on Si(111) substrates by plasma-assisted molecular beam epitaxy. In a systematic series of experiments, the amount of Mg supplied during NW growth was varied. The incorporation of Mg into the NWs was confirmed by the observation of donor-acceptor pairs and acceptor-bound excitons in low-temperature photoluminescence spectroscopy. Quantitative information about the Mg concentrations was deduced from Raman scattering by local vibrational modes related to Mg...
February 9, 2017: Nano Letters
https://www.readbyqxmd.com/read/28157858/fluence-induced-reversal-of-saturable-absorption-in-a-ruthenium-based-porphyrin
#16
Timothy M Pritchett, Robert C Hoffman, Andrew G Mott, Michael J Ferry
Experimental nonlinear absorption data obtained using the open-aperture Z-scan technique are presented for 2, 3, 7, 8, 12, 17, 18-octaethyl-21H, 23H-porphine ruthenium (II) carbonyl in tetrahydrofuran. These data show saturation of nonlinear absorption dominating at low fluence but being overcome by induced absorption (reverse saturable absorption) at high fluence. Large-angle scattering measurements demonstrate that the induced absorption is real and not merely the result of scattering of light outside of the collection aperture of the detector by scattering centers induced at high fluence...
January 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28157337/disorder-driven-metal-insulator-transitions-in-deformable-lattices
#17
Domenico Di Sante, Simone Fratini, Vladimir Dobrosavljević, Sergio Ciuchi
We show that, in the presence of a deformable lattice potential, the nature of the disorder-driven metal-insulator transition is fundamentally changed with respect to the noninteracting (Anderson) scenario. For strong disorder, even a modest electron-phonon interaction is found to dramatically renormalize the random potential, opening a mobility gap at the Fermi energy. This process, which reflects disorder-enhanced polaron formation, is here given a microscopic basis by treating the lattice deformations and Anderson localization effects on the same footing...
January 20, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28150319/factors-influencing-platelet-clumping-during-peripheral-blood-hematopoietic-stem-cell-collection
#18
Gagan Mathur, Sarah L Mott, Laura Collins, Gail A Nelson, C Michael Knudson, Annette J Schlueter
BACKGROUND: Platelet clumping is a common occurrence during peripheral blood hematopoietic stem cell (HSC) collection using the Spectra Optia mononuclear cell (MNC) protocol. If clumping persists, it may prevent continuation of the collection and interfere with proper MNC separation. This study is the first to report the incidence of clumping, identify precollection factors associated with platelet clumping, and describe the degree to which platelet clumping interferes with HSC product yield...
February 1, 2017: Transfusion
https://www.readbyqxmd.com/read/28137615/regulation-of-mir-29b-1-a-transcription-and-identification-of-target-mrnas-in-cho-k1-cells
#19
Penn Muluhngwi, Kirsten Richardson, Joshua Napier, Eric C Rouchka, Justin L Mott, Carolyn M Klinge
miR-29b and miR-29a transcript levels were reported to increase in exponentially growing CHO-K1 cells. Here, we examine the regulation of miR-29b-1/a in CHO-K1 cells. We observed that 4-hydroxytamoxifen (4-OHT) increased pri-miR-29b-1 and pri-miR-29a transcription in CHO-K1 cells by activating endogenous estrogen receptor α (ERα). DICER, an established, bona fide target of miR-29b-1/a, was shown to be regulated by 4-OHT in CHO-K1 cells. We showed that miR-29b-1 and miR-29a serve a repressive role in cell proliferation, migration, invasion, and colony formation in CHO-K1 cells...
January 28, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28134541/true-happiness-the-role-of-morality-in-the-folk-concept-of-happiness
#20
Jonathan Phillips, Julian De Freitas, Christian Mott, June Gruber, Joshua Knobe
Recent scientific research has settled on a purely descriptive definition of happiness that is focused solely on agents' psychological states (high positive affect, low negative affect, high life satisfaction). In contrast to this understanding, recent research has suggested that the ordinary concept of happiness is also sensitive to the moral value of agents' lives. Five studies systematically investigate and explain the impact of morality on ordinary assessments of happiness. Study 1 demonstrates that moral judgments influence assessments of happiness not only for untrained participants, but also for academic researchers and even in those who study happiness specifically...
February 2017: Journal of Experimental Psychology. General
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