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https://www.readbyqxmd.com/read/28330321/antimicrobial-antibiofilm-and-microbial-barrier-properties-of-poly-%C3%AE%C2%B5-caprolactone-cloisite-30b-thin-films
#1
Snigdha Sajeendra Babu, Shiji Mathew, Nandakumar Kalarikkal, Sabu Thomas, Radhakrishnan E K
Development of antibacterial and antibiofilm surfaces is in high demand. In this study, nanocomposite of Poly (ε-caprolactone)/Cloisite 30B was prepared by the solvent casting method. The membranes were characterised by SEM, AFM, and FTIR. Evaluation of water uptake, antimicrobial, antibiofilm, and microbial barrier properties demonstrated a significant antimicrobial and antibiofilm activity against MTCC strain of Staphylococcus haemolyticus and strong biofilm positive Staphylococcus epidermidis of clinical origin at low clay concentrations...
December 2016: 3 Biotech
https://www.readbyqxmd.com/read/28329686/demethylated-hsatii-dna-and-hsatii-rna-foci-sequester-prc1-and-mecp2-into-cancer-specific-nuclear-bodies
#2
Lisa L Hall, Meg Byron, Dawn M Carone, Troy W Whitfield, Gayle P Pouliot, Andrew Fischer, Peter Jones, Jeanne B Lawrence
This study reveals that high-copy satellite II (HSATII) sequences in the human genome can bind and impact distribution of chromatin regulatory proteins and that this goes awry in cancer. In many cancers, master regulatory proteins form two types of cancer-specific nuclear bodies, caused by locus-specific deregulation of HSATII. DNA demethylation at the 1q12 mega-satellite, common in cancer, causes PRC1 aggregation into prominent Cancer-Associated Polycomb (CAP) bodies. These loci remain silent, whereas HSATII loci with reduced PRC1 become derepressed, reflecting imbalanced distribution of UbH2A on these and other PcG-regulated loci...
March 21, 2017: Cell Reports
https://www.readbyqxmd.com/read/28329010/phylogenetic-reconstruction-of-syntermitinae-isoptera-termitidae-based-on-morphological-and-molecular-data
#3
Mauricio M Rocha, Adriana C Morales-Corrêa E Castro, Carolina Cuezzo, Eliana M Cancello
The subfamily Syntermitinae comprises a group of Neotropical termites with 18 genera and 101 species described. It has been considered a natural group, but relationships among the genera within the subfamily remain uncertain, and some genera appear to be non-monophyletic. Here, we provide a comprehensive phylogeny including six Neotropical species of Termitinae as outgroup, 42 Syntermitinae species as ingroup, 92 morphological characters (from external and internal anatomy of soldier and worker castes) and 117 molecular sequences (109 obtained for this study and 8 from GenBank) of 4 gene regions (41 and 22 from Cytochrome Oxidase I and II respectively, 19 from Cytochrome b, and 35 from 16S rDNA)...
2017: PloS One
https://www.readbyqxmd.com/read/28328564/variation-in-national-acgme-case-log-data-for-pediatric-orthopaedic-fellowships-are-fellow-coding-practices-responsible
#4
Philip K McClure, Marcella Woiczik, Lori Karol, Wudbhav N Sankar
BACKGROUND: The introduction of the 80-hour work week for Accreditation Council for Graduate Medical Education (ACGME) accredited fellowship programs initiated many efforts to optimize surgical training. One particular area of interest is on recording and tracking surgical experiences. The current standard is logging cases based on Current Procedural Terminology codes, which are primarily designed for billing. Proposed guidelines from the ACGME regarding logging exist, but their implementation is unknown, as is the variation in case volume across fellowship programs...
March 21, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28328265/student-nurses-perceptions-of-dignity-in-the-care-of-older-people
#5
Leah Macaden, Richard G Kyle, Wayne Medford, Julie Blundell, Sarah-Anne Munoz, Elaine Webster
AIM: The aim of this research was to investigate student nurses' perceptions of the concept of dignity in the care of older people. Student nurses regularly move between the classroom and the clinical setting and are thus ideally placed to cast light on the barriers that exist to providing dignity in care and the way in which their theoretical understanding of dignity is shaped by exposure to the practice setting. METHOD: All student nurses on a three-year undergraduate nursing programme at one university were invited to participate in an online questionnaire survey and focus groups...
March 9, 2017: British Journal of Nursing: BJN
https://www.readbyqxmd.com/read/28328207/same-precursor-two-different-products-comparing-the-structural-evolution-of-in-ga-o-gel-derived-powders-and-so-lution-cast-films-using-pair-distribution-function-analysis
#6
Suzannah R Wood, Keenan N Woods, Paul N Plassmeyer, David A Marsh, Darren W Johnson, Catherine J Page, Kirsten M O Jensen, David C Johnson
Amorphous metal oxides are central to a variety of technological applications. In particular, indium gallium oxide has garnered attention as a thin-film transistor channel layer material. In this work we examine the structural evolution of indium gallium oxide gel-derived powders and thin films using X-ray diffraction, infrared vibrational spectroscopy, and pair distribution function analysis of X-ray total scattering from standard (PDF) and normal incidence thin film (tfPDF) geometries. We find that the gel-derived powders and films from the same aqueous precursor evolve differently with temperature, forming mixtures of Ga-substituted In2O3 and In-substituted β-Ga2O3 with different degrees of substitution...
March 22, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28327775/nanospherical-solid-electrolyte-interface-layer-formation-in-binder-free-carbon-nanotube-aerogel-si-nanohybrids-to-provide-lithium-ion-battery-anodes-with-a-long-cycle-life-and-high-capacity
#7
Hyung Cheoul Shim, Ilhwan Kim, Chang-Su Woo, Hoo-Jeong Lee, Seungmin Hyun
Silicon anodes for lithium ion batteries (LiBs) have been attracting considerable attention due to a theoretical capacity up to about 10 times higher than that of conventional graphite. However, huge volume expansion during the cycle causes cracks in the silicon, resulting in the degradation of cycling performance and eventual failure. Moreover, low electrical conductivity and an unstable solid electrolyte interface (SEI) layer resulting from repeated changes in volume still block the next step forward for the commercialization of the silicon material...
March 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/28327073/the-influence-of-axial-grooves-on-dislodgment-resistance-of-prosthetic-metal-crowns-in-canine-teeth-of-dogs
#8
Stephanie Goldschmidt, Caitlyn J Collins, Scott Hetzel, Heidi-Lynn Ploeg, Jason W Soukup
The reported failure rate for full veneer crowns of canine teeth of dogs is suboptimal, particularly in teeth with naturally poor retentive features, such as those with low height/diameter (H/D) ratios or high convergence angles (CAs). The objective of the present study was to evaluate the application of axial grooves in an effort to develop a crown preparation design that enhances the retention of full veneer crowns in dogs. Crown dislodgment testing was performed on cast alloy dies of canine teeth with unfavorable retention features (low H/D and high CA) prepared with (n = 14) and without axial grooves (n = 15) to evaluate the force required to dislodge a cemented full veneer crown...
September 2016: Journal of Veterinary Dentistry
https://www.readbyqxmd.com/read/28327065/the-influence-of-axial-grooves-on-dislodgment-resistance-of-prosthetic-metal-crowns-in-maxillary-fourth-premolar-teeth-of-dogs
#9
Stephanie Goldschmidt, Caitlyn J Collins, Scott Hetzel, Heidi-Lynn Ploeg, Jason W Soukup
The reported failure rate for full veneer crowns in dogs is suboptimal, particularly in teeth with naturally poor retentive features such as the maxillary fourth premolar tooth of dogs. Although the data regarding crown retention on the maxillary fourth premolar in dogs are limited, there are data that suggest the crown failure rate could be similar to that of the canine tooth. Thus, methods to improve retentive features of the preparation design should be pursued. The objective of the present study is to quantify the influence of axial grooves on the dislodgment resistance of full veneer metal crowns in dogs...
September 2016: Journal of Veterinary Dentistry
https://www.readbyqxmd.com/read/28326901/continuity-of-care-to-prevent-readmissions-for-patients-with-chronic-obstructive-pulmonary-disease-a-systematic-review-and-meta-analysis
#10
Fen Yang, Zhen-Fang Xiong, Chongming Yang, Lin Li, Guiyuan Qiao, Yuncui Wang, Taoyun Zheng, Huijuan He, Hui Hu
Readmissions of patients with chronic obstructive pulmonary disease (COPD) to hospitals cast a heavy burden to health care systems. This meta-analysis was aimed to assess the efficacy of continuity of care as interventions, which reduced readmission and mortality rates of such patients. PubMed, Cochrane Library and Embase were searched for articles published before July 2015. A total of 31 reports with randomized controlled trials (RCTs) were finally included in this meta-analysis. The results showed that health education reduced all-cause readmission at 3 months...
April 2017: COPD
https://www.readbyqxmd.com/read/28326732/-three-dimensional-finite-element-analyses-of-the-deep-wedge-shaped-defective-premolars-restored-with-different-methods
#11
Zhao Ling, Yang Liyuan, Liu Cuiling, Gao Xu
OBJECTIVE: The objective of this paper is to analyze the stress distribution in the deep wedge-shaped defective mandibular first premolars restored with different methods. METHODS: Three-dimensional finite element models of mandibular first premolar with deep wedge-shaped defect were created. The model, which was untreated after root canal treatment, served as the control group. Then, according to different treatment designs, four experimental groups were established as follows: resin filling (A), post restoration after resin filling (B), crown restoration after resin filling (C), and post and crown restoration after resin filling (D)...
February 1, 2017: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28325348/hydrophobic-edible-films-made-up-of-tomato-cutin-and-pectin
#12
Anny Manrich, Francys K V Moreira, Caio G Otoni, Marcos V Lorevice, Maria A Martins, Luiz H C Mattoso
Cutin is the biopolyester that protects the extracellular layer of terrestrial plants against dehydration and environmental stresses. In this work, cutin was extracted from tomato processing waste and cast into edible films having pectin as a binding agent. The influences of cutin/pectin ratio (50/50 and 25/75), film-forming suspension pH, and casting method on phase dispersion, water resistance and affinity, and thermal and mechanical properties of films were investigated. Dynamic light scattering and scanning electron microscopy revealed that cutin phase aggregation was reduced by simply increasing pH...
May 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28325329/extraction-of-nanocellulose-and-in-situ-casting-of-zno-cellulose-nanocomposite-with-enhanced-photocatalytic-and-antibacterial-activity
#13
Kebadiretse Lefatshe, Cosmas M Muiva, Lemme P Kebaabetswe
Polymer hosted metallic nanostructures with diverse applications have become a prominent area of materials science, engineering and technology. In this study nanocellulose (NC) was synthesized from oil palm empty fruit bunches biomass via alkaline treatment and acid hydrolysis and characterized. The obtained NC was used as a host polymer for the synthesis of zinc oxide (ZnO) nanostructures through in-situ solution casting method. Alkaline treatment and acid hydrolysis increased the percentage crystalline index from 35...
May 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28325202/casting-a-wider-safety-net-the-promise-of-electronic-safety-event-detection-systems
#14
EDITORIAL
Eric S Kirkendall
No abstract text is available yet for this article.
April 2017: Joint Commission Journal on Quality and Patient Safety
https://www.readbyqxmd.com/read/28324956/a-graphene-oxide-ph-sensor-for-wound-monitoring
#15
B Melai, P Salvo, N Calisi, L Moni, A Bonini, C Paoletti, T Lomonaco, V Mollica, R Fuoco, F Di Francesco
This article describes the fabrication and characterization of a pH sensor for monitoring the wound status. The pH sensitive layer consists of a graphene oxide (GO) layer obtained by drop-casting 5 μΐ of GO dispersion onto the working electrode of a screen-printed substrate. Sensitivity was 31.8 mV/pH with an accuracy of 0.3 unit of pH. Open-circuit potentiometry was carried out to measure pH in an exudate sample. The GO pH sensor proved to be reliable as the comparison with results obtained from a standard glass electrode pH-meter showed negligible differences (<; 0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324719/negatively-charged-polysulfone-membranes-with-hydrophilicity-and-antifouling-properties-based-on-in-situ-cross-linked-polymerization
#16
Lijing Zhu, Haiming Song, Dawei Zhang, Gang Wang, Zhixiang Zeng, Qunji Xue
Polysulfone (PSf) membrane has been widely used in water separation and purification, although, membrane fouling is still a serious problem limiting its potential. We aim to improve the antifouling of PSf membranes via a very simple and efficient method. In this work, antifouling PSf membranes were fabricated via in situ cross-linked polymerization coupled with non-solvent induced phase separation. In brief, acrylic acid (AA) and vinyltriethoxysilane (VTEOS) were copolymerized in PSf solution, then directly casted into membranes without purification...
March 14, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28323352/efficient-semitransparent-solar-cells-with-high-nir-responsiveness-enabled-by-a-small-bandgap-electron-acceptor
#17
Feng Liu, Zichun Zhou, Cheng Zhang, Jianyun Zhang, Qin Hu, Thomas Vergote, Feng Liu, Thomas P Russell, Xiaozhang Zhu
Inspired by the remarkable promotion of power conversion efficiency (PCE), commercial applications of organic photovoltaics (OPVs) can be foreseen in near future. One of the most promising applications is semitransparent (ST) solar cells that can be utilized in value-added applications such as energy-harvesting windows. However, the single-junction STOPVs utilizing fullerene acceptors show relatively low PCEs of 4%-6% due to the limited sunlight absorption because it is a dilemma that more photons need to be harvested in UV-vis-near-infrared (NIR) region to generate high photocurrent, which leads to the significant reduction of device transparency...
March 21, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28322960/sericin-binded-deprotenized-natural-rubber-film-containing-chitin-whiskers-as-elasto-gel-dressing
#18
Anyarat Watthanaphanit, Ratana Rujiravanit
Here, we aims to demonstrate a simple concept in biomaterials design by using natural resources solely as raw materials to fabricate elastic wound care dressing. Elasto-gel films comprise of silk sericin (SRC), natural rubber (NR), and chitin whisker (CTW) were developed. A glue-like protein SRC found in silk cocoons is beneficial for the treatment of wounds due to its superior skin moisturizing ability. However, the pure SRC film is generally difficult to be fabricated because of its weak structural feature...
March 17, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28321684/left-ventricular-flow-propagation-velocity-measurement-is-it-cast-in-stone
#19
Bee Ting Chan, Hak Koon Yeoh, Yih Miin Liew, Yang Faridah Abdul Aziz, Ganiga Srinivasaiah Sridhar, Christian Hamilton-Craig, David Platts, Einly Lim
This study aims to investigate the measurement of left ventricular flow propagation velocity, V p, using phase contrast magnetic resonance imaging and to assess the discrepancies resulting from inflow jet direction and individual left ventricular size. Three V p measuring techniques, namely non-adaptive (NA), adaptive positions (AP) and adaptive vectors (AV) method, were suggested and compared. We performed the comparison on nine healthy volunteers and nine post-infarct patients at four measurement positions, respectively, at one-third, one-half, two-thirds and the conventional 4 cm distances from the mitral valve leaflet into the left ventricle...
March 20, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28321507/the-relationship-between-cumulative-lifetime-ultraviolet-radiation-exposure-bone-mineral-density-falls-risk-and-fractures-in-older-adults
#20
M J W Thompson, D A Aitken, P Otahal, J Cicolini, T M Winzenberg, G Jones
Data linking cumulative lifetime vitamin D status with skeletal outcomes are lacking. We show that increasing cumulative sun exposure was associated with higher bone mineral density in younger males and protective against fractures in females independent of current vitamin D. This supports the concept that cumulative sun exposure is an important contributor to skeletal health. INTRODUCTION: While low 25-hydroxyvitamin D levels are associated with increased fracture risk, this reflects only recent sun exposure...
March 20, 2017: Osteoporosis International
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