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https://www.readbyqxmd.com/read/28441738/simulation-study-of-the-localization-of-a-near-surface-crack-using-an-air-coupled-ultrasonic-sensor-array
#1
Steven Delrue, Vladislav Aleshin, Mikael Sørensen, Lieven De Lathauwer
The importance of Non-Destructive Testing (NDT) to check the integrity of materials in different fields of industry has increased significantly in recent years. Actually, industry demands NDT methods that allow fast (preferably non-contact) detection and localization of early-stage defects with easy-to-interpret results, so that even a non-expert field worker can carry out the testing. The main challenge is to combine as many of these requirements into one single technique. The concept of acoustic cameras, developed for low frequency NDT, meets most of the above-mentioned requirements...
April 22, 2017: Sensors
https://www.readbyqxmd.com/read/28441597/differences-in-nitrate-and-phosphorus-export-between-wooded-and-grassed-riparian-zones-from-farmland-to-receiving-waterways-under-varying-rainfall-conditions
#2
Amanda D Neilen, Chengrong R Chen, Brett M Parker, Stephen J Faggotter, Michele A Burford
Agricultural activities in catchments can cause excessive nutrient loads in waterways. Catchment nitrogen (N) and phosphorus (P) flows may be intercepted and assimilated by riparian vegetation. While prior studies suggest that woody vegetation is preferable for reducing P loads, the question remains: is woody vegetation or grass cover more effective at reducing catchment N and P exports to waterways. To address this we investigated the relative importance of vegetation type, hydrologic and soil microbial processes on N and P losses from soil to a stream...
April 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28441509/patient-safety-and-quality-improvement-in-otolaryngology-education-a-systematic-review
#3
John D Gettelfinger, P Barrett Paulk, Cecelia E Schmalbach
Objective The breadth and depth of patient safety/quality improvement (PS/QI) research dedicated to otolaryngology-head and neck surgery (OHNS) education remains unknown. This systematic review aims to define this scope and to identify knowledge gaps as well as potential areas of future study to improved PS/QI education and training in OHNS. Data Sources A computerized Ovid/Medline database search was conducted (January 1, 1965, to May 15, 2015). Similar computerized searches were conducted using Cochrane Database, PubMed, and Google Scholar...
April 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28441492/caenorhabditis-elegans-prmt-7-and-prmt-9-are-evolutionarily-conserved-protein-arginine-methyltransferases-with-distinct-substrate-specificities
#4
Andrea Hadjikyriacou, Steven Gerard Clarke
Caenorhabditis elegans protein arginine methyltransferases PRMT-7 and PRMT-9 are two evolutionarily conserved enzymes, with distinct orthologs in plants, invertebrates, and vertebrates. Biochemical characterization of these two enzymes reveals that they share much in common with their mammalian orthologs. C. elegans PRMT-7 produces only monomethyl arginine (MMA) and preferentially methylates R-X-R motifs in a broad collection of substrates, including human histone peptides and RG-rich peptides. In addition, the activity of the PRMT-7 enzyme is dependent on temperature, the presence of metal ions, and the reducing agent dithiothreitol (DTT)...
April 25, 2017: Biochemistry
https://www.readbyqxmd.com/read/28441487/the-isomeric-preference-of-an-atypical-dopamine-transporter-inhibitor-contributes-to-its-selection-of-the-transporter-conformation
#5
Ara M Abramyan, Sebastian Stolzenberg, Zheng Li, Claus J Loland, Frank Noé, Lei Shi
Cocaine, a widely abused psychostimulant, inhibits the dopamine transporter (DAT) by trapping the protein in an outward-open conformation, whereas atypical DAT inhibitors such as benztropine have low abuse liability and prefer less outward-open conformations. Here, we use a spectrum of computational modeling and simulation approaches to obtain the underlying molecular mechanism in atomistic detail. Interestingly, our quantum mechanical calculations and molecular dynamics (MD) simulations suggest that a benztropine derivative JHW007 prefers a different stereoisomeric conformation of tropane in binding to DAT compared to that of a cocaine derivative, CFT...
April 25, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28441388/a-population-based-approach-for-implementing-change-from-opt-out-to-opt-in-research-permissions
#6
Elizabeth A Marshall, Jim C Oates, Azza Shoaibi, Jihad S Obeid, Melissa L Habrat, Robert W Warren, Kathleen T Brady, Leslie A Lenert
Due to recently proposed changes in the Common Rule regarding the collection of research preferences, there is an increased need for efficient methods to document opt-in research preferences at a population level. Previously, our institution developed an opt-out paper-based workflow that could not be utilized for research in a scalable fashion. This project was designed to demonstrate the feasibility of implementing an electronic health record (EHR)-based active opt-in research preferences program. The first phase of implementation required creating and disseminating a patient questionnaire through the EHR portal to populate discreet fields within the EHR indicating patients' preferences for future research study contact (contact) and their willingness to allow anonymised use of excess tissue and fluid specimens (biobank)...
2017: PloS One
https://www.readbyqxmd.com/read/28441370/conventional-modalities-and-novel-emerging-imaging-techniques-for-musculoskeletal-tumors
#7
Meera Raghavan
BACKGROUND: Imaging of musculoskeletal tumors requires a multimodality approach and includes radiography, computed tomography (CT), and magnetic resonance imaging (MRI). METHODS: Topics related to primary bone and soft-tissue tumors are reviewed. The fundamental imaging principles are discussed as well as the applications of emerging imaging modalities. RESULTS: MRI is the preferred technique for the evaluation of musculoskeletal tumors, whereas other imaging modalities play a complementary role...
April 2017: Cancer Control: Journal of the Moffitt Cancer Center
https://www.readbyqxmd.com/read/28441319/speyeria-lepidoptera-nymphalidae-conservation
#8
REVIEW
Steven R Sims
Speyeria (Nymphalidae) are a conspicuous component of the North American butterfly fauna. There are approximately 16 species and >100 associated subspecies (or geographical variants). Speyeria are univoltine, occupy a wide range of habitats, overwinter as first instar larvae, and feed only on native violets. Speyeria species have become a model group for studies of evolution, speciation, and conservation. Several species and subspecies are threatened or endangered. The reasons for this vary with the taxa involved, but always involve the degradation or loss of quality habitat for larvae and adults...
April 25, 2017: Insects
https://www.readbyqxmd.com/read/28441277/symptomatic-epidermoid-cyst-presenting-as-a-paravaginal-mass
#9
Abigail P Davenport, Carl W Zimmerman, Bryan J Hill, Jeffrey Davis
BACKGROUND: Ischioanal fossa epidermoid cysts are uncommon masses of epithelial origin and are believed to be either congenital or the result of trauma. Surgical excision is preferred as opposed to incision and drainage because these masses may enlarge, recur, become infected, or undergo malignant transformation. CASE: This report describes a case of a 62-year-old woman who presented for evaluation of vaginal and perineal discomfort and fullness. Physical examination and computed tomography scan revealed a 7...
May 2017: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/28441127/physician-recruitment-and-retention-in-manitoba-results-from-a-survey-of-physicians-preferences-for-rural-jobs
#10
Julia Witt
INTRODUCTION: Rural recruitment and retention continues to present challenges to health workforce planners. This paper reports and analyzes the results of a survey sent to physicians in Manitoba, eliciting their opinions regarding rural jobs. METHODS: A survey was sent to all physicians in Manitoba. Part 1 of the survey included questions about background and demographic information; part 2 was a set of job satisfaction questions regarding respondents' current job; and part 3 included 2 sets of stated-choice questions eliciting preferences for a set of attributes relevant to rural recruitment and retention...
2017: Canadian Journal of Rural Medicine
https://www.readbyqxmd.com/read/28441112/second-line-hormonal-therapy-for-men-with-chemotherapy-na%C3%A3-ve-castration-resistant-prostate-cancer-american-society-of-clinical-oncology-provisional-clinical-opinion
#11
Katherine S Virgo, Ethan Basch, D Andrew Loblaw, Tom Oliver, R Bryan Rumble, Michael A Carducci, Luke Nordquist, Mary-Ellen Taplin, Eric Winquist, Eric A Singer
Purpose ASCO provisional clinical opinions (PCOs) offer direction to the ASCO membership after publication or presentation of potential practice-changing data. This PCO addresses second-line hormonal therapy for chemotherapy-naïve men with castration-resistant prostate cancer (CRPC) who range from being asymptomatic with only biochemical evidence of CRPC to having documented metastases but minimal symptoms. Clinical Context The treatment goal for CRPC is palliation. Despite resistance to initial androgen deprivation therapy, most men respond to second-line hormonal therapies...
April 25, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28441015/-bottom-up-construction-of-multi-polyprodrug-arm-hyperbranched-amphiphiles-for-cancer-therapy
#12
Pei Sun, Dong Chen, Hongping Deng, Nan Wang, Ping Huang, Xin Jin, Xinyuan Zhu
Despite of great advantages of polymer-drug conjugates (PDC) in cancer therapy, the controlling of drug loading site and degree via a facile approach remains a great challenge. Herein, combination the controllability of the "bottom-up" strategy and the stability of multi-arm hyperbranched amphiphiles, we have developed a novel multi-polyprodrug-arm hyperbranched amphiphiles (H40-star-(PHCPTMA-b-PMPC), hPCM) via reversible addition-fragmentation chain transfer (RAFT) polymerization for cancer therapy. The hPCM was constructed via two-step polymerization of an acid-labile prodrug monomer and a zwitterionic monomer, respectively...
April 25, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28441001/-mexican-asthma-guidelines-guima-2017
#13
Désirée Larenas-Linnemann, Jorge Salas-Hernández, Juan Carlos Vázquez-García, Ignacio Ortiz-Aldana, Margarita Fernández-Vega, Blanca Estela Del Río-Navarro, María Del Carmen Cano-Salas, Jorge Agustín Luna-Pech, José Antonio Ortega-Martell, Jade Romero-Lombard, Erika Del Carmen López-Estrada, Jimena Villaverde-Rosas, José Luis Mayorga-Butrón, Mario Humberto Vargas-Becerra, Martín Bedolla-Barajas, Noel Rodríguez-Pérez, Ambrocio Aguilar-Aranda, Carlos Adrián Jiménez-González, Carlos García-Bolaños, Claudia Garrido-Galindo, David Alejandro Mendoza-Hernández, Enrique Mendoza-López, Gerardo López-Pérez, Guillermo Hideo Wakida-Kuzonoki, Héctor Hernán Ruiz-Gutiérrez, Héctor León-Molina, Héctor Martínez-De la Lanza, Héctor Stone-Aguilar, Javier Gómez-Vera, Jorge Olvera-Salinas, José Joel Oyoqui-Flores, José Luis Gálvez-Romero, José Santos Lozano-Sáenz, Juan Ignacio Salgado-Gama, Marcos Alejandro Jiménez-Chobillon, Martha Angélica García-Avilés, Martha Patricia Guinto-Balanzar, Miguel Alejandro Medina-Ávalos, Robert Camargo-Angeles, Rogelio García-Torrentera, Saraí Toral-Freyre, Gabriel Montes-Narváez, Héctor Solorio-Gómez, Juan Rosas-Peña, Sergio Jesús Romero-Tapia, Adela Reyes-Herrera, Francisco Cuevas-Schacht, Joaquín Esquer-Flores, José Antonio Sacre-Hazouri, Lorenzo Compean-Martínez, Pablo Julián Medina-Sánchez, Sergio Garza-Salinas, Carlos Báez-Loyola, Iraís Romero-Alvarado, José Luis Miguel-Reyes, Laura Elizabeth Huerta-Espinosa, Manuel Ángel Correa-Flores, Ricardo Castro-Martínez
BACKGROUND: The need for a national guideline, with a broad basis among specialists and primary care physicians was felt in Mexico, to try unifying asthma management. As several high-quality asthma guidelines exist worldwide, it was decided to select the best three for transculturation. METHODS: Following the internationally recommended methodology for guideline transculturation, ADAPTE, a literature search for asthma guidelines, published 1-1-2007 through 31-12-2015 was conducted...
2017: Revista Alergia Mexico: Organo Oficial de la Sociedad Mexicana de Alergia e Inmunología, A.C
https://www.readbyqxmd.com/read/28440913/piperacillin-tazobactam-versus-cefepime-incidence-of-acute-kidney-injury-in-combination-with-vancomycin-and-tobramycin-in-pediatric-cystic-fibrosis-patients
#14
Lisa K LeCleir, Rebecca S Pettit
BACKGROUND: Cystic fibrosis (CF) patients often receive prolonged courses of broad spectrum antibiotics, such as piperacillin-tazobactam or cefepime in combination with vancomycin and tobramycin. The objective of this study was to determine the difference in AKI for pediatric CF patients receiving piperacillin-tazobactam or cefepime in combination with vancomycin and tobramycin. METHODS: IRB approval from a single CF center was obtained for this retrospective cohort study...
April 25, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28440903/triple-doped-monolayer-graphene-with-boron-nitrogen-aluminum-silicon-phosphorus-and-sulfur
#15
Pablo Andres Denis, Saif Ullah, Fernando Sato
We have investigated the structure, stability, electronic properties and chemical reactivity of X/B/N triple doped graphene systems, X= Al, Si, P and S, by means of density functional periodic calculations. For the triple doped graphene (TDG) systems studied the dopants prefer to be bonded instead of separated. In general, the XNB pattern is preferred, with the exception of sulfur which favors the SBN motif. The introduction of a third dopant results in a negligible decrease of the cohesive energies with respect to their dual doped graphene (DDG) counterparts...
April 25, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28440886/earthworm-dispersal-assay-for-rapidly-evaluating-soil-quality
#16
Shin Woong Kim, Dokyung Kim, Jongmin Moon, Yooeun Chae, Jin Il Kwak, Younsu Park, Seung-Woo Jeong, Youn-Joo An
Earthworms enhance soil functioning and are, therefore, key species in the soil. Their presence is generally a positive sign for a terrestrial ecosystem, as these species serve as important biomarkers in soil quality evaluations. Here, we describe a novel bioassay, named "dispersal assay," that is a simple and rapid technique for field-based soil quality evaluations. This bioassay was designed based on the premise that earthworms prefer optimal soils if given the choice. Thus, assay tubes containing a reference soil were inserted in target sites, and earthworms were placed into these tubes...
April 25, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28440830/organocatalytic-decarboxylative-aldol-reaction-of-%C3%AE-ketoacids-with-%C3%AE-ketophosphonates-en-route-to-the-enantioselective-synthesis-of-tertiary-%C3%AE-hydroxyphosphonates
#17
Ganga B Vamisetti, Raghunath Chowdhury, Sunil K Ghosh
The first example of an asymmetric organocatalyzed decarboxylative aldol reaction of β-ketoacids (aroylacetic acids) with α-ketophosphonates that produces a quaternary chiral centre has been developed. A quinidine based bifunctional urea derivative was identified as the preferred catalyst affording γ-aroyl tertiary α-hydroxyphosphonates in good yield and enantioselectivity. The (31)P NMR spectroscopic study was performed to shed light on the reaction mechanism.
April 25, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28440798/improved-gene-delivery-to-adult-mouse-spinal-cord-through-the-use-of-engineered-hybrid-adeno-associated-viral-serotypes
#18
J J Siu, N J Queen, W Huang, F Q Yin, X Liu, C Wang, D M McTigue, L Cao
Adeno-associated viral (AAV) vectors are often used in gene therapy for neurological disorders because of its safety profile and promising results in clinical trials. One challenge to AAV gene therapy is effective transduction of large numbers of the appropriate cell type, which can be overcome by modulating the viral capsid through DNA shuffling. Our previous study demonstrates that Rec2, among a family of novel engineered hybrid capsid serotypes (Rec1~4) transduces adipose tissue with far superior efficiency than naturally occurring AAV serotypes...
April 25, 2017: Gene Therapy
https://www.readbyqxmd.com/read/28440786/magnetic-and-transport-properties-of-layered-compound-ce-sub-2-sub-te-sub-5-sub
#19
Dong Chen, Shuai Zhang, Yang Huaixin, Jianqi Li, Gen-Fu Chen
Ce<sub>2</sub>Te<sub>5</sub> single crystals were successfully grown using RbCl/LiCl flux method. The structure of Ce<sub>2</sub>Te<sub>5</sub> can be viewed as a combination of CeTe<sub>2</sub> and CeTe<sub>3</sub>. The experimental results of magnetic susceptibility <i>χ</i>(<i>T</i>), isothermal magnetization <i>M</i>(<i>H</i>), electrical resistivity <i>ρ</i>(<i>T</i>), and heat capacity <i>C</i>(<i>T</i>) show two clear anomalies at 5...
April 25, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28440782/systematization-of-clinical-trials-related-to-treatment-of-metabolic-syndrome-1980-2015
#20
Santiago Cardona Velásquez, Laura Guzmán Vivares, Jaiberth Antonio Cardona-Arias
INTRODUCTION: Despite the clinical, epidemiological, and economic significance of metabolic syndrome, the profile of clinical trials on this disease is unknown. OBJECTIVE: To characterize the clinical trials related to treatment of metabolic syndrome during the 1980-2015 period. METHODS: Systematic review of the literature using an ex ante search protocol which followed the phases of the guide Preferred Reporting Items for Systematic Reviews and Meta-Analyses in four multidisciplinary databases with seven search strategies...
February 2017: Endocrinol Diabetes Nutr
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