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https://www.readbyqxmd.com/read/28823112/miniaturized-pulsed-laser-source-for-time-domain-diffuse-optics-routes-to-wearable-devices
#1
Laura Di Sieno, Jan Nissinen, Lauri Hallman, Edoardo Martinenghi, Davide Contini, Antonio Pifferi, Juha Kostamovaara, Alberto Dalla Mora
We validate a miniaturized pulsed laser source for use in time-domain (TD) diffuse optics, following rigorous and shared protocols for performance assessment of this class of devices. This compact source (12×6  mm2) has been previously developed for range finding applications and is able to provide short, high energy (∼100  ps, ∼0.5  nJ) optical pulses at up to 1 MHz repetition rate. Here, we start with a basic level laser characterization with an analysis of suitability of this laser for the diffuse optics application...
August 2017: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/28822904/the-effect-of-age-and-length-of-gonadotropin-stimulation-on-the-in%C3%A2-vitro-embryo-development-of-holstein-calf-oocytes
#2
Luke Currin, Laura Michalovic, Anne-Marie Bellefleur, Karina Gutierrez, Werner Glanzner, Yasmin Schuermann, Rodrigo C Bohrer, Naomi Dicks, Paulo R da Rosa, Matheus P De Cesaro, Rosalba Lopez, François-Xavier Grand, Christian Vigneault, Patrick Blondin, Jim Gourdon, Hernan Baldassarre, Vilceu Bordignon
The use of oocytes recovered from prepubertal donors for in vitro embryo production has great potential for accelerating the rate of genetic gain in the dairy industry. However, these oocytes are known to be less developmentally competent than those from adult donors. In this study, we investigated the effect of age and gonadotropin stimulation in Holstein heifers subjected to oocyte collection every two weeks between 2 and 6 months of age. In order to assess the effect of gonadotropin stimulation, animals were subjected to one of three treatments, namely Short (ST; 36-42 h), Long (LT; ≥72 h) and No Treatment (NT) prior to laparoscopic ovum pick-up (LOPU)...
August 10, 2017: Theriogenology
https://www.readbyqxmd.com/read/28822884/with-directed-study-before-a-4-day-operating-room-management-course-trust-in-the-content-did-not-change-progressively-during-the-classroom-time
#3
Franklin Dexter, Richard H Epstein, Brenda G Fahy, Lyn M Van Swol
STUDY OBJECTIVE: A 4-day course in operating room (OR) management is sufficient to provide anesthesiologists with the knowledge and problem solving skills needed to participate in projects of the systems-based-practice competency. Anesthesiologists may need to learn fewer topics when the objective is, instead, limited to comprehension of decision-making on the day of surgery, We tested the hypothesis that trust in course content would not increase further after completion of topics related to OR decision-making on the day of surgery...
August 17, 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28822820/utility-of-3d-reconstruction-of-2d-liver-computed-tomography-magnetic-resonance-images-as-a-surgical-planning-tool-for-residents-in-liver-resection-surgery
#4
Caitlin T Yeo, Andrew MacDonald, Tamas Ungi, Andras Lasso, Diederick Jalink, Boris Zevin, Gabor Fichtinger, Sulaiman Nanji
OBJECTIVE: A fundamental aspect of surgical planning in liver resections is the identification of key vessel tributaries to preserve healthy liver tissue while fully resecting the tumor(s). Current surgical planning relies primarily on the surgeon's ability to mentally reconstruct 2D computed tomography/magnetic resonance (CT/MR) images into 3D and plan resection margins. This creates significant cognitive load, especially for trainees, as it relies on image interpretation, anatomical and surgical knowledge, experience, and spatial sense...
August 16, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28822819/-reflection-before-practice-improves-self-assessment-and-end-performance-in-laparoscopic-surgical-skills-training
#5
Sandeep Ganni, Sanne M B I Botden, Dennis P Schaap, Bas H Verhoeven, Richard H M Goossens, Jack J Jakimowicz
OBJECTIVE: To establish whether a systematized approach to self-assessment in a laparoscopic surgical skills course improves accordance between expert- and self-assessment. DESIGN: A systematic training course in self-assessment using Competency Assessment Tool was introduced into the normal course of evaluation within a Laparoscopic Surgical Skills training course for the test group (n = 30). Differences between these and a control group (n = 30) who did not receive the additional training were assessed...
August 16, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28822624/evaluating-an-australian-emergency-nurse-practitioner-candidate-training-program
#6
Sharyn J Plath, Mary Wright, Julia Hocking
Nurse Practitioners (NPs) receive core clinical training at master's level, with their employer providing the opportunity to upskill in clinical and procedural competencies. It is increasingly recognised that this generic education requires supplementary training for operating effectively within a specific clinical environment. In this paper we describe a pilot program designed to train Australian NP Candidates to work effectively within the Emergency Department Fast Track model of care. The training program consisted of a 12-month period: four hours in-house training per week over two semesters, running concurrently with the NP candidate's University semesters, and 3 months' clinical practice to consolidate...
August 16, 2017: Australasian Emergency Nursing Journal: AENJ
https://www.readbyqxmd.com/read/28822325/are-there-regional-tendencies-toward-controversial-screening-practices-a-study-of-prostate-and-breast-cancer-screening-in-a-medicare-population
#7
Eric Raffin, Tracy Onega, Julie Bynum, Andrea Austin, Donald Carmichael, Kristen Bronner, Philip Goodney, Elias S Hyams
INTRODUCTION: Prostate and breast cancer screening in older patients continue to be controversial. Balancing the desire for early detection with avoidance of over-diagnosis has led to competing and contradictory guidelines for both practices. Despite similarities, it is not known how these screening practices are related at the regional level. In this study, we examined how screening PSA and mammography are related within healthcare regions, and, to better understand what may be driving these practices, whether they are associated with local intensity of care...
August 16, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/28822240/statin-use-and-venous-thromboembolism-in-cancer-a-large-active-comparator-propensity-score-matched-cohort-study
#8
Sherif M El-Refai, Esther P Black, Val R Adams, Jeffery C Talbert, Joshua D Brown
BACKGROUND: Statins have been shown to have a protective effect for venous thromboembolism (VTE) in the general population. This study sought to assess the association between statins and the risk for cancer-associated deep vein thrombosis (DVT) and pulmonary embolism (PE). METHODS: Patients with newly diagnosed cancer were followed for up to one year in a healthcare claims database (2010-2013). Three treatment groups included statin users, non-statin cholesterol lowering medication users, and an untreated group with pre-existing indications for statin therapy (hyperlipidemia, diabetes, or heart disease)...
August 10, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28822219/regulation-of-protein-function-by-s-nitrosation-and-s-glutathionylation-processes-and-targets-in-cardiovascular-pathophysiology
#9
Eugenia Belcastro, Caroline Gaucher, Alessandro Corti, Pierre Leroy, Isabelle Lartaud, Alfonso Pompella
Decades of chemical, biochemical and pathophysiological research have established the relevance of post-translational protein modifications induced by processes related to oxidative stress, with critical reflections on cellular signal transduction pathways. A great deal of the socalled 'redox regulation' of cell function is in fact mediated through reactions promoted by reactive oxygen and nitrogen species on more or less specific aminoacid residues in proteins, at various levels within the cell machinery. Modifications involving cysteine residues have received most attention, due to the critical roles they play in determining the structure/function correlates in proteins...
August 28, 2017: Biological Chemistry
https://www.readbyqxmd.com/read/28822211/healthcare-students-interprofessional-critical-event-disaster-response-course
#10
Tae Eung Kim, Tamara Shankel, Ellen T Reibling, Jacqueline Paik, Dolores Wright, Michelle Buckman, Kathi Wild, Ehren Ngo, Alireza Hayatshahi, Lee H Nguyen, T Kent Denmark, Tamara L Thomas
OBJECTIVE: Numerous disasters confirm the need for critical event training in healthcare professions. However, no single discipline works in isolation and interprofessional learning is recognized as a necessary component. An interprofessional faculty group designed a learning curriculum crossing professional schools. DESIGN: Faculty members from four healthcare schools within the university (nursing, pharmacy, allied health, and medicine) developed an interdisciplinary course merging both published cross-cutting competencies for critical event response and interprofessional education competencies...
January 2017: American Journal of Disaster Medicine
https://www.readbyqxmd.com/read/28821908/predicting-homeless-people-s-perceived-health-after-entering-the-social-relief-system-in-the-netherlands
#11
Jorien van der Laan, Barbara van Straaten, Sandra N Boersma, Gerda Rodenburg, Dike van de Mheen, Judith R L M Wolf
OBJECTIVES: We explored whether changes in the perceived health of homeless people after entering the social relief system (SRS) in The Netherlands were predicted by housing, income, hours of work, social support, unmet care needs, arrests, physical and mental health, substance use, and experiences of autonomy, competence and relatedness, in addition to perceived health at baseline, demographics, suspected intellectual disability, the duration of homelessness and the company of children in the shelter facility...
August 18, 2017: International Journal of Public Health
https://www.readbyqxmd.com/read/28821870/enhanced-silicon-availability-leads-to-increased-methane-production-nutrient-and-toxicant-mobility-in-peatlands
#12
Gloria-Maria Susanne Reithmaier, Klaus-Holger Knorr, Sebastian Arnhold, Britta Planer-Friedrich, Jörg Schaller
Peatlands perform important ecosystem functions, such as carbon storage and nutrient retention, which are affected, among other factors, by vegetation and peat decomposition. The availability of silicon (Si) in peatlands differs strongly, ranging from <1 to >25 mg L(-1). Since decomposition of organic material was recently shown to be accelerated by Si, the aim of this study was to examine how Si influences decomposition of carbon and nutrient and toxicant mobilization in peatlands. We selected a fen site in Northern Bavaria with naturally bioavailable Si pore water concentrations of 5 mg/L and conducted a Si addition experiment...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821763/activation-of-an-anti-bacterial-toxin-by-the-biosynthetic-enzyme-cysk-mechanism-of-binding-interaction-specificity-and-competition-with-cysteine-synthase
#13
Roberto Benoni, Christina M Beck, Fernando Garza-Sánchez, Stefano Bettati, Andrea Mozzarelli, Christopher S Hayes, Barbara Campanini
Contact-dependent growth inhibition (CDI) is a wide-spread mechanism of inter-bacterial competition. CDI(+) bacteria deliver CdiA-CT toxins into neighboring bacteria and produce specific immunity proteins that protect against self-intoxication. The CdiA-CT toxin from uropathogenic Escherichia coli 536 is a latent tRNase that is only active when bound to the cysteine biosynthetic enzyme CysK. Remarkably, the CysK:CdiA-CT binding interaction mimics the 'cysteine synthase' complex of CysK:CysE. The C-terminal tails of CysE and CdiA-CT each insert into the CysK active-site cleft to anchor the respective complexes...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28821687/mri-substrates-of-sustained-attention-system-and-cognitive-impairment-in-pediatric-ms-patients
#14
Ermelinda De Meo, Lucia Moiola, Angelo Ghezzi, Pierangelo Veggiotti, Ruggero Capra, Maria Pia Amato, Elisabetta Pagani, Agnese Fiorino, Lorena Pippolo, Maria C Pera, Giancarlo Comi, Andrea Falini, Massimo Filippi, Maria A Rocca
OBJECTIVE: To explore the structural and functional integrity of the sustained attention system in patients with pediatric multiple sclerosis (MS) and its effect on cognitive impairment. METHODS: We enrolled 57 patients with pediatric MS and 14 age- and sex-matched healthy controls (HCs). Patients with >3 abnormal tests at neuropsychological evaluation were classified as cognitively impaired (CI). Sustained attention system activity was studied with fMRI during the Conners Continuous Performance Test (CCPT)...
August 18, 2017: Neurology
https://www.readbyqxmd.com/read/28821668/sensory-biased-and-multiple-demand-processing-in-human-lateral-frontal-cortex
#15
Abigail L Noyce, Nishmar Cestero, Samantha W Michalka, Barbara G Shinn-Cunningham, David C Somers
The functionality of much of human lateral frontal cortex (LFC) has been characterized as 'multiple demand' as these regions appear to support a broad range of cognitive tasks. In contrast to this domain-general account, recent evidence indicates that portions of LFC are consistently selective for sensory modality. Michalka et al. (2015) reported two bilateral regions that are biased for visual attention, superior precentral sulcus (sPCS) and inferior precentral sulcus (iPCS), interleaved with two bilateral regions that are biased for auditory attention, transverse gyrus intersecting precentral sulcus (tgPCS) and caudal inferior frontal sulcus (cIFS)...
August 8, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28821642/super-optimal-perceptual-integration-suggests-a-place-based-representation-of-pitch-at-high-frequencies
#16
Bonnie K Lau, Anahita H Mehta, Andrew J Oxenham
Pitch, the perceptual correlate of sound repetition rate or frequency, plays an important role in speech perception, music perception, and listening in complex acoustic environments. Despite its perceptual importance, the neural mechanisms underlying pitch remain poorly understood. Although cortical regions responsive to pitch have been identified, little is known about how pitch information is extracted from the inner ear itself. The two primary theories of peripheral pitch coding involve stimulus-driven spike timing, or phase locking, in the auditory nerve (time code), and the spatial distribution of responses along the length of the cochlear partition (place code)...
August 17, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28821598/quality-standards-in-upper-gastrointestinal-endoscopy-a-position-statement-of-the-british-society-of-gastroenterology-bsg-and-association-of-upper-gastrointestinal-surgeons-of-great-britain-and-ireland-augis
#17
Sabina Beg, Krish Ragunath, Andrew Wyman, Matthew Banks, Nigel Trudgill, D Mark Pritchard, Stuart Riley, John Anderson, Helen Griffiths, Pradeep Bhandari, Phillip Kaye, Andrew Veitch
This document represents the first position statement produced by the British Society of Gastroenterology and Association of Upper Gastrointestinal Surgeons of Great Britain and Ireland, setting out the minimum expected standards in diagnostic upper gastrointestinal endoscopy. The need for this statement has arisen from the recognition that while technical competence can be rapidly acquired, in practice the performance of a high- quality examination is variable, with an unacceptably high rate of failure to diagnose cancer at endoscopy...
August 18, 2017: Gut
https://www.readbyqxmd.com/read/28821551/coordinated-regulation-of-the-eii-man-and-frurki-operons-of-streptococcus-mutans-by-global-and-fructose-specific-pathways
#18
Lin Zeng, Brinta Chakraborty, Tanaz Farivar, Robert A Burne
The glucose/mannose-PTS permease EII(Man) encoded by manLMN in the dental caries pathogen Streptococcus mutans has a dominant influence on sugar-specific, CcpA-independent catabolite repression (CR). Mutations in manL affect energy metabolism and virulence-associated traits, including biofilm formation, acid tolerance and competence. Using promoter:reporter fusions, expression of the manLMN and the fruRKI operons, encoding a transcriptional regulator, a fructose-1-P kinase and a fructose-PTS permease EII(Fru), respectively, was monitored in response to carbohydrate source and in mutants lacking CcpA, FruR, and components of EII(Man) Expression of genes for EII(Man) and EII(Fru) was directly regulated by CcpA and CR, as evinced by in vivo and in vitro methods...
August 18, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28821538/reflecting-on-graphs-attributes-of-graph-choice-and-construction-practices-in-biology
#19
Aakanksha Angra, Stephanie M Gardner
Undergraduate biology education reform aims to engage students in scientific practices such as experimental design, experimentation, and data analysis and communication. Graphs are ubiquitous in the biological sciences, and creating effective graphical representations involves quantitative and disciplinary concepts and skills. Past studies document student difficulties with graphing within the contexts of classroom or national assessments without evaluating student reasoning. Operating under the metarepresentational competence framework, we conducted think-aloud interviews to reveal differences in reasoning and graph quality between undergraduate biology students, graduate students, and professors in a pen-and-paper graphing task...
2017: CBE Life Sciences Education
https://www.readbyqxmd.com/read/28821421/exploring-canadian-physicians-experiences-with-diabetes-care-for-indigenous-patients
#20
Lynden Lindsay Crowshoe, Rita I Henderson, Michael E Green, Kristen M Jacklin, Leah M Walker, Betty Calam
OBJECTIVES: The perspectives of physicians caring for Indigenous patients with diabetes offer important insights into the provision of health-care services. The purpose of this study was to describe Canadian physicians' perspectives on diabetes care of Indigenous patients, a preliminary step in developing a continuing medical education intervention described elsewhere. METHODS: Through in-depth semistructured interviews, Canadian family physicians and specialists with sizeable proportions of Indigenous clientele shared their experiences of working with Indigenous patients who have type 2 diabetes...
August 15, 2017: Canadian Journal of Diabetes
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