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https://www.readbyqxmd.com/read/28221674/effects-of-visitor-numbers-on-captive-european-red-squirrels-sciurus-vulgaris-and-impacts-on-visitor-experience
#1
Eleanor E Woolway, Anne E Goodenough
Visitors to zoological collections can have substantial effects on captive animals that vary according to species, enclosure design, visitor proximity, and husbandry methods. One particularly intense form of visitor interaction occurs in immersive exhibits such as walk-through enclosures. Such enclosures are increasingly common but effects on animal behavior are currently understudied. Here, the behavior of captive European red squirrels (Sciurus vulgaris) is studied in relation to visitor numbers in a walk-through enclosure...
February 21, 2017: Zoo Biology
https://www.readbyqxmd.com/read/28216131/assessing-the-experience-of-vaginal-dilator-use-and-potential-barrier-to-ongoing-use-among-a-focus-group-of-women-with-mrkh
#2
Oluyemisi A Adeyemi-Fowode, Jennifer E Dietrich
STUDY OBJECTIVE: To assess the experience of dilator use for neovagina creation in women diagnosed with Mayer Rokitansky Kuster Hauser (MRKH) Syndrome and identify barriers affecting patient compliance with dilator use. DESIGN: and Setting: Qualitative study using a structured questionnaire to investigate perception and identify barriers regarding vaginal dilator use. Questionnaire was administered following viewing of a 2-minute patient educational video to additionally examine the usefulness of a patient education video tool as an adjunct to counseling in clinic on vaginal dilator use...
February 16, 2017: Journal of Pediatric and Adolescent Gynecology
https://www.readbyqxmd.com/read/28216068/stages-of-dysfunctional-decision-making-in-addiction
#3
REVIEW
Antonio Verdejo-Garcia, Trevor T-J Chong, Julie C Stout, Murat Yücel, Edythe D London
Drug use is a choice with immediate positive outcomes, but long-term negative consequences. Thus, the repeated use of drugs in the face of negative consequences suggests dysfunction in the cognitive mechanisms underpinning decision-making. This cognitive dysfunction can be mapped into three stages: the formation of preferences involving valuation of decision options; choice implementation including motivation, self-regulation and inhibitory processes; and feedback processing implicating reinforcement learning...
February 16, 2017: Pharmacology, Biochemistry, and Behavior
https://www.readbyqxmd.com/read/28215377/healthy-empowered-youth-a-positive-youth-development-program-for-native-youth
#4
Stephanie N Craig Rushing, Nichole L Hildebrandt, Carol J Grimes, Amanda J Rowsell, Benjamin C Christensen, William E Lambert
INTRODUCTION: During 2010-2012, Oregon Health & Science University's Prevention Research Center, a Northwest Tribe, and the Northwest Portland Area Indian Health Board, collaborated to evaluate the Healthy & Empowered Youth Project, a school- and community-based positive youth development program for American Indian and Alaska Native high school students. METHODS: The Native STAND (Students Together Against Negative Decisions) curriculum was enhanced with hands-on learning activities in media design to engage students in sexual and reproductive health topics covered by the curriculum...
March 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28214392/reduced-nicotine-content-cigarette-advertising-how-false-beliefs-and-subjective-ratings-affect-smoking-behavior
#5
Melissa Mercincavage, Megan L Saddleson, Emily Gup, Angela Halstead, Darren Mays, Andrew A Strasser
INTRODUCTION: Tobacco advertising can create false beliefs about health harms that are reinforced by product design features. Reduced nicotine content (RNC) cigarettes may reduce harm, but research has not addressed advertising influences. This study examined RNC cigarette advertising effects on false harm beliefs, and how these beliefs - along with initial subjective ratings of RNC cigarettes - affect subsequent smoking behaviors. We further explored whether subjective ratings moderate associations between false beliefs and behavior...
February 3, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28210747/extent-of-field-change-in-colorectal-cancers-with-braf-mutation
#6
Aaron Poh, Heidi Sian Ying Chang, Kok Yang Tan, Xin Xiu Sam, Avery Khoo, Shoa Nian Choo, Min En Nga, Wei Keat Wan
INTRODUCTION: Sporadic colorectal cancers with BRAF mutations constitute two distinct subgroups of colorectal cancers. Recent studies have linked the presence of the BRAF mutation to a familial inheritance pattern. This was a proof-of-concept study that aimed to examine: (a) the extent of field change in sporadic colorectal cancers with BRAF mutation; and (b) the extent of resection margins required and the pattern of DNA mismatch repair protein loss in these tumours. METHODS: Eight microsatellite instability-high (MSI-H) tumours with positive BRAF mutation from an existing histopathological database were selected for BRAF mutation and mismatch repair protein analysis...
February 17, 2017: Singapore Medical Journal
https://www.readbyqxmd.com/read/28199267/organizational-and-community-factors-associated-with-magnet-status-of-u-s-hospitals
#7
Teresa Wai Chi Tai, Sherry I Bame
The Magnet Recognition Program for healthcare organizations promotes excellence in nursing services and professional practices. However, organizational and community characteristics that contribute to the adoption of Magnet status remain unexplained. Investigating organizational and community factors will help determine systematic structural and contextual dimensions of Magnet hospitals previously shown to be more cost-effective in comparison with non-Magnet hospitals. Using the baseline 2005 database of all Magnet hospitals in the United States, the authors selected a matched sample to determine key organizational and community characteristics associated with Magnet adoption while controlling for regional and local factors...
January 2017: Journal of Healthcare Management / American College of Healthcare Executives
https://www.readbyqxmd.com/read/28194796/the-utility-of-the-musculocutaneous-anterolateral-thigh-flap-in-pharyngolaryngeal-reconstruction-in-the-high-risk-patient
#8
Adrian S H Ooi, Chad M Teven, Amir Inbal, David W Chang
BACKGROUND AND OBJECTIVES: Prior radiotherapy leads to increased wound complication rates for microsurgical reconstruction of pharyngolaryngeal (PL) defects. Incorporating vastus lateralis muscle together with anterolateral thigh flap (ALT) skin in defect reconstruction is useful in protecting vital structures and reinforcing irradiated neck skin and suture lines. This study shows the utility of the musculocutaneous ALT (MC ALT) in PL reconstruction in previously irradiated patients. METHODS: A single-surgeon, retrospective chart review of all patients with defects of the PL region where an MC ALT was used for reconstruction from February 2014 to May 2016...
February 14, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28192670/metal-ion-mediated-cellulose-nanofibrils-transient-network-in-covalently-cross-linked-hydrogels-mechanistic-insight-into-morphology-and-dynamics
#9
Jun Yang, Feng Xu, Chun-Rui Han
Utilization of reversible interactions as sacrificial bonds in biopolymers is critical for the integral synthesis of mechanically superior biological materials. In this work, cellulose nanofibrils (CNFs) reinforced covalent polyacrylamide (PAAm) composite hydrogels are immersed into multivalent cation (Ca2+, Zn2+, Al3+, and Ce3+) aqueous solution to form ionic association among CNFs, leading to the ionic-covalent cross-linked hydrogels. The cations promote the formation of porous networks of nanofibrils by screening the repulsive negative charges on CNF surface and dominate the mechanical properties and self-recovery efficiency of the hydrogels, resulting in mechanically reinforced ionic hydrogels with stiff (Young's modulus 257 kPa) and tough properties (fracture toughness 386 kJ/m3)...
February 13, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28187258/drawing-catalytic-power-from-charge-separation-stereoelectronic-and-zwitterionic-assistance-in-the-au-i-catalyzed-bergman-cyclization
#10
Gabriel Dos Passos Gomes, Igor V Alabugin
The synergy between bond formation and bond breaking that is typical for pericyclic reactions is lost in their mechanistic cousins, cycloaromatization reactions. In these reactions, exemplified by the Bergman cyclization (BC), two bonds are sacrificed to form a single bond and the reaction progress is interrupted at the stage of a cyclic diradical intermediate. The catalytic power of Au(I) in BC stems from a combination of two sources: stereoelectronic assistance of C-C bond formation ("LUMO umpolung") and crossover from a diradical to a zwitterionic mechanism that takes advantage of the catalyst's dual ability to stabilize both negative and positive charges...
February 10, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28182526/hippocampal-processing-of-ambiguity-enhances-fear-memory
#11
Ugwechi Amadi, Seh Hong Lim, Elizabeth Liu, Michael V Baratta, Ki A Goosens
Despite the ubiquitous use of Pavlovian fear conditioning as a model for fear learning, the highly predictable conditions used in the laboratory do not resemble real-world conditions, in which dangerous situations can lead to unpleasant outcomes in unpredictable ways. In the current experiments, we varied the timing of aversive events after predictive cues in rodents and discovered that temporal ambiguity of aversive events greatly enhances fear. During fear conditioning with unpredictably timed aversive events, pharmacological inactivation of the dorsal hippocampus or optogenetic silencing of cornu ammonis 1 cells during aversive negative prediction errors prevented this enhancement of fear without affecting fear learning for predictable events...
February 2017: Psychological Science
https://www.readbyqxmd.com/read/28179924/fracture-resistance-of-roots-after-application-of-different-sealers
#12
Fatemeh Dibaji, Farzaneh Afkhami, Babak Bidkhori, Mohammad Javad Kharazifard
INTRODUCTION: Vertical root fracture inevitably leads to tooth extraction. Thus, root filling with obturating materials and sealers that can reinforce the tooth would be an ideal way to reduce fracture in root treated teeth. This study aimed to assess the fracture resistance of roots following the application of different sealers including Epiphany, iRoot sealer and AH-plus. METHODS AND MATERIALS: Fifty extracted human single-canal premolars without caries, curvature or cracks were used in this study...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28178021/the-meanings-young-people-assign-to-living-with-mental-illness-and-their-experiences-in-managing-their-health-and-lives-a-systematic-review-of-qualitative-evidence
#13
Roberta L Woodgate, Corey Sigurdson, Lisa Demczuk, Pauline Tennent, Bernadine Wallis, Pamela Wener
BACKGROUND: It is estimated that less than 25% of young people in need of treatment for mental illness receive specialized services, and even fewer receive a diagnosis by their doctor. These findings are troubling given that living with a mental illness can have a significant impact on a young person's life, the lives of his/her family members, the young person's community and society generally. OBJECTIVE: The objective of this systematic review was to synthesize the best available qualitative evidence on the meanings young people assign to living with mental illness and their experiences in managing their health and lives...
February 2017: JBI Database of Systematic Reviews and Implementation Reports
https://www.readbyqxmd.com/read/28176352/learning-processes-underlying-avoidance-of-negative-outcomes
#14
Marta Andreatta, Sebastian Michelmann, Paul Pauli, Johannes Hewig
Successful avoidance of a threatening event may negatively reinforce the behavior due to activation of brain structures involved in reward processing. Here, we further investigated the learning-related properties of avoidance using feedback-related negativity (FRN). The FRN is modulated by violations of an intended outcome (prediction error, PE), that is, the bigger the difference between intended and actual outcome, the larger the FRN amplitude is. Twenty-eight participants underwent an operant conditioning paradigm, in which a behavior (button press) allowed them to avoid a painful electric shock...
February 8, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28169029/the-contribution-of-volunteer-based-monitoring-data-to-the-assessment-of-harmful-phytoplankton-blooms-in-brazilian-urban-streams
#15
Davi Gasparini Fernandes Cunha, Simone Pereira Casali, Patrícia Bortoletto de Falco, Ian Thornhill, Steven Arthur Loiselle
Urban streams are vulnerable to a range of impacts, leading to the impairment of ecosystem services. However, studies on phytoplankton growth in tropical lotic systems are still limited. Citizen science approaches use trained volunteers to collect environmental data. We combined data on urban streams collected by volunteers with data obtained by professional scientists to identify potential drivers of phytoplankton community and determine thresholds for Cyanobacteria development. We combined datasets (n=117) on water quality and environmental observations in 64 Brazilian urban streams with paired data on phytoplankton...
February 3, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28167579/statistical-evidence-of-anasymptotic-geometric-structure-to-the-momentum-transporting-motions-in-turbulent-boundary-layers
#16
Caleb Morrill-Winter, Jimmy Philip, Joseph Klewicki
The turbulence contribution to the mean flow is reflected by the motions producing the Reynolds shear stress (〈-uv〉) and its gradient. Recent analyses of the mean dynamical equation, along with data, evidence that these motions asymptotically exhibit self-similar geometric properties. This study discerns additional properties associated with the uv signal, with an emphasis on the magnitudes and length scales of its negative contributions. The signals analysed derive from high-resolution multi-wire hot-wire sensor data acquired in flat-plate turbulent boundary layers...
March 13, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28165139/carboxylated-nanodiamonds-can-be-used-as-negative-reference-in-in-vitro-nanogenotoxicity-studies
#17
H Moche, V Paget, D Chevalier, E Lorge, N Claude, H A Girard, J C Arnault, S Chevillard, F Nesslany
Nanodiamonds (NDs) are promising nanomaterials for biomedical applications. However, a few studies highlighted an in vitro genotoxic activity for detonation NDs, which was not evidenced in one of our previous work quantifying γ-H2Ax after 20 and 100 nm high-pressure high-temperature ND exposures of several cell lines. To confirm these results, in the present work, we investigated the genotoxicity of the same 20 and 100 nm NDs and added intermediate-sized NDs of 50 nm. Conventional in vitro genotoxicity tests were used, i...
February 6, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28164996/personality-and-augmenting-reducing-a-r-in-auditory-event-related-potentials-erps-during-emotional-visual-stimulation
#18
Vilfredo De Pascalis, Francesca Fracasso, Philip J Corr
An auditory augmenting/reducing ERP paradigm recorded for 5 intensity tones with emotional visual stimulation was used, for the first time, to test predictions derived from the revised Reinforcement Sensitivity Theory (rRST) of personality with respect to two major factors: behavioral inhibition system (BIS), fight/flight/freeze system (FFFS). Higher BIS and FFFS scores were negatively correlated with N1/P2 slopes at central sites (C3, Cz, C4). Conditional process analysis revealed that the BIS was a mediator of the association between the N1/P2 slope and the FFFS scores...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28160818/nursing-student-evaluation-of-niosh-workplace-violence-prevention-for-nurses-online-course
#19
Maria Brann, Dan Hartley
INTRODUCTION: As primary targets of workplace violence in health care settings, nurses may suffer negative physical and psychological consequences. NIOSH created an online course to educate nurses about violence prevention techniques. METHOD: A mixed-methods approach assessed workplace violence awareness and knowledge among nursing students. A pre/post/post-test survey and focus group discussions evaluated participant awareness and knowledge, assessed course design, and solicited recommendations for increasing participation and strategies for improving message retention...
February 2017: Journal of Safety Research
https://www.readbyqxmd.com/read/28157829/how-should-remote-clinical-monitoring-be-used-to-treat-alcohol-use-disorders-initial-findings-from-an-expert-round-table-discussion
#20
Alan Gordon, Adi Jaffe, A Thomas McLellan, Gary Richardson, Gregory Skipper, Michel Sucher, Carlos F Tirado, Harold C Urschel
Scientific evidence combined with new health insurance coverage now enable a chronic illness management approach to the treatment of alcohol use disorders (AUDs), including regular monitoring of blood alcohol content (BAC), as a useful indicator of disease control. Recent technical advances now permit many different types of remote, real-time monitoring of BAC. However, there is no body of research to empirically guide clinicians in how to maximize the clinical potential of remote BAC monitoring.As an initial step in guiding and supporting such research, the manufacturer of one remote BAC monitoring system sponsored a group of experienced clinicians and clinical researchers to discuss 8 issues that generally affect remote, clinical BAC monitoring of "adults in outpatient AUD treatment...
February 2, 2017: Journal of Addiction Medicine
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