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https://www.readbyqxmd.com/read/28440251/accommodative-amplitude-using-the-minus-lens-at-different-near-distances
#1
Hamed Momeni-Moghaddam, Jason S Ng, Bruno Mario Cesana, Abbas Ali Yekta, Mohammad Reza Sedaghat
PURPOSE: The purpose of this study was to compare the mean findings and the repeatability of the minus lens (ML) amplitude of accommodation (AA) at 33 cm and 40 cm. MATERIALS AND METHODS: AA was measured from the dominant eye of 120 fully corrected subjects using the ML procedure when viewing the target at both 33 and 40 cm. Each measurement was repeated between 24 and 48 hours after the first trial. RESULTS: Mean AA when tested at 33 cm and 40 cm was 10...
March 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28432089/preparing-future-doctors-for-palliative-care-views-of-course-organisers
#2
Steven Walker, Jane Gibbins, Paul Paes, Stephen Barclay, Astrid Adams, Madawa Chandratilake, Faye Gishen, Philip Lodge, Bee Wee
BACKGROUND: Effective training at medical school is essential to prepare new doctors to safely manage patients with palliative care (PC) and end of life care (EOLC) needs. The contribution of undergraduate PC course organisers is central but their collective views regarding role are unknown. OBJECTIVE: To survey attitudes of PC course organisers regarding their course, organisation, the adequacy of training provided and level of personal satisfaction. METHODS: An anonymised, multifactorial, web-based questionnaire was devised, tested, modified and then sent to lead PC course organisers at all UK medical schools...
April 21, 2017: BMJ Supportive & Palliative Care
https://www.readbyqxmd.com/read/28430887/measurement-of-forces-and-moments-around-the-maxillary-arch-for-treatment-of-a-simulated-lingual-incisor-and-high-canine-malocclusion-using-straight-and-mushroom-archwires-in-fixed-lingual-appliances
#3
Brandon Owen, Geoffry Gullion, Giseon Heo, Jason P Carey, Paul W Major, Dan L Romanyk
Introduction: An Orthodontic SIMulator (OSIM) was used to investigate the propagation of forces and moments around a simulated archform for a gingival displaced canine and lingual displaced lateral incisor using fixed lingual orthodontic appliances. Methods: In-Ovation L self-ligating lingual brackets were bonded to anatomically shaped teeth on the OSIM, and the teeth were positioned such that a G4 NiTi 0.016" large maxillary mushroom archwire could be ligated in passive position...
April 20, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28423481/prevalence-of-gastric-motility-disorders-in-patients-with-functional-dyspepsia
#4
Haruki Asano, Toshihiko Tomita, Kumiko Nakamura, Takahisa Yamasaki, Takuya Okugawa, Takashi Kondo, Tomoaki Kono, Katsuyuki Tozawa, Yoshio Ohda, Tadayuki Oshima, Hirokazu Fukui, Kazuhito Fukushima, Shozo Hirota, Jiro Watari, Hiroto Miwa
Background/Aims: Gastric motility abnormalities have been considered to be pathophysiological features of functional dyspepsia (FD) that are closely related to dyspepsia symptoms, especially postprandial distress syndrome (PDS). The aims of this study are to (1) investigate the prevalence of gastric motility disorders and (2) evaluate the association between gastric motility abnormalities and dyspeptic symptoms using gastric scintigraphy in the PDS type of FD. Methods: Forty healthy subjects and 94 PDS type FD patients were enrolled in the study...
April 19, 2017: Journal of Neurogastroenterology and Motility
https://www.readbyqxmd.com/read/28422683/progressive-dictionary-learning-with-hierarchical-predictive-structure-for-scalable-video-coding
#5
Wenrui Dai, Yangmei Shen, Hongkai Xiong, Xiaoqian Jiang, Junni Zou, David Taubman
Dictionary learning has emerged as a promising alternative to the conventional hybrid coding framework. However, the rigid structure of sequential training and prediction degrades its performance in scalable video coding. This paper proposes a progressive dictionary learning framework with hierarchical predictive structure for scalable video coding, especially in low bitrate region. For pyramidal layers, sparse representation based on spatio-temporal dictionary is adopted to improve the coding efficiency of enhancement layers (ELs) with a guarantee of reconstruction performance...
April 12, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28418080/phototoxic-potential-of-undispersed-and-dispersed-fresh-and-weathered-macondo-crude-oils-to-gulf-of-mexico-marine-organisms
#6
Bryson E Finch, Solmaz Marzooghi, Dominic M Di Toro, William A Stubblefield
Crude oils contain a mixture of hydrocarbons, including phototoxic polycyclic aromatic hydrocarbons (PAHs) that have the ability to absorb ultraviolet (UV) light. Absorption of UV light by PAHs can substantially increase their toxicity to marine organisms. The objective of the present study was to examine the potential for phototoxicity of fresh and naturally weathered Macondo crude oils alone and in combination with the dispersant Corexit 9500 to mysid shrimp (Americamysis bahia), inland silverside (Menidia beryllina), sheepshead minnow (Cyprinodon variegatus), and Gulf killifish (Fundulus grandis)...
April 18, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28416964/a-nondestructive-method-to-estimate-the-chlorophyll-content-of-arabidopsis-seedlings
#7
Ying Liang, Daisuke Urano, Kang-Ling Liao, Tyson L Hedrick, Yajun Gao, Alan M Jones
BACKGROUND: Chlorophyll content decreases in plants under stress conditions, therefore it is used commonly as an indicator of plant health. Arabidopsis thaliana offers a convenient and fast way to test physiological phenotypes of mutations and treatments. However, chlorophyll measurements with conventional solvent extraction are not applicable to Arabidopsis leaves due to their small size, especially when grown on culture dishes. RESULTS: We provide a nondestructive method for chlorophyll measurement whereby the red, green and blue (RGB) values of a color leaf image is used to estimate the chlorophyll content from Arabidopsis leaves...
2017: Plant Methods
https://www.readbyqxmd.com/read/28416633/intrusions-in-episodic-memory-reconsolidation-or-interference
#8
Angela Klingmüller, Jeremy B Caplan, Tobias Sommer
It would be profoundly important if reconsolidation research in animals and other memory domains generalized to human episodic memory. A 3-d-list-discrimination procedure, based on free recall of objects, with a contextual reminder cue (the testing room), has been thought to demonstrate reconsolidation of human episodic memory (as noted in a previous study). Our goal was to replicate the central result, a high intrusion rate during recall of the target list, and evaluate the reconsolidation account relative to an alternative account, based on state-dependent learning and interference...
May 2017: Learning & Memory
https://www.readbyqxmd.com/read/28414888/models-of-human-adamantinomatous-craniopharyngioma-tissue-steps-toward-an-effective-adjuvant-treatment
#9
Annett Hölsken, Rolf Buslei
Even though ACP is a benign tumor, treatment is challenging because of the tumor's eloquent location. Today, with the exception of surgical intervention and irradiation, further treatment options are limited. However, ongoing molecular research in this field provides insights into the pathways involved in ACP pathogenesis and reveal a plethora of druggable targets. In the next step, appropriate models are essential to identify the most suitable and effective substances for clinical practice. Primary cell cultures in low passages provide a proper and rapid tool for initial drug potency testing...
May 2017: Brain Pathology
https://www.readbyqxmd.com/read/28413938/psychiatric-service-users-experiences-of-emergency-departments-a-cerqual-review-of-qualitative-studies
#10
Kathrine Carstensen, Stina Lou, Lotte Groth Jensen, Nina Konstantin Nissen, Lisbeth Ortenblad, Margarete Pfau, Pia Vedel Ankersen
BACKGROUND: There is increased clinical and political attention towards integrating general and psychiatric emergency departments (ED). However, research into psychiatric service users' experiences regarding general EDs is limited. AIM: To identify and summarize current, qualitative evidence regarding service users' experiences attending EDs. A secondary aim is to apply and test the newly developed CERQual approach to summarizing qualitative review findings. METHODS: A systematic literature review of five databases based on PRISMA guidelines yielded 3334 unique entries...
May 2017: Nordic Journal of Psychiatry
https://www.readbyqxmd.com/read/28406673/bayesian-unknown-change-point-models-to-investigate-immediacy-in-single-case-designs
#11
Prathiba Natesan, Larry V Hedges
Although immediacy is one of the necessary criteria to show strong evidence of a causal relation in single case designs (SCDs), no inferential statistical tool is currently used to demonstrate it. We propose a Bayesian unknown change-point model to investigate and quantify immediacy in SCD analysis. Unlike visual analysis that considers only 3-5 observations in consecutive phases to investigate immediacy, this model considers all data points. Immediacy is indicated when the posterior distribution of the unknown change-point is narrow around the true value of the change-point...
April 13, 2017: Psychological Methods
https://www.readbyqxmd.com/read/28405958/previously-acquired-cue-outcome-structural-knowledge-guides-new-learning-evidence-from-the-retroactive-interference-between-cues-effect
#12
David Luque, Joaquín Morís, Francisco J López, Pedro L Cobos
The effect of retroactive interference between cues predicting the same outcome (RIBC) occurs when the behavioral expression of a cue-outcome association (e.g., A→O1) is reduced due to the later acquisition of an association between a different cue and the same outcome (e.g., B→O1). In the present experimental series, we show that this effect can be modulated by knowledge concerning the structure of these cue-outcome relationships. In Experiments 1A and 1B, a pretraining phase was included to promote the expectation of either a one-to-one (OtO) or a many-to-one (MtO) cue-outcome structure during the subsequent RIBC training phases...
April 12, 2017: Memory & Cognition
https://www.readbyqxmd.com/read/28401155/identification-of-streptococcus-pneumoniae-development-of-a-standardized-protocol-for-optochin-susceptibility-testing-using-total-lab-automation
#13
Irene Burckhardt, Jessica Panitz, Florian Burckhardt, Stefan Zimmermann
Purpose. Optochin susceptibility is one parameter used in the laboratory to identify Streptococcus pneumoniae. However, a single standardized procedure does not exist. Optochin is included neither in the current EUCAST breakpoint tables nor in the CLSI performance standards for antimicrobial susceptibility testing. We wanted to establish an evidence-based protocol for optochin testing for our Total Lab Automation. Methods. We tested seven different agars and four different reading time points (7 h, 12 h, 18 h, and 24 h)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28398996/lessons-learned-from-option-b-in-the-evolution-toward-test-and-start-from-malawi-cameroon-and-the-united-republic-of-tanzania
#14
Thokozani Kalua, Beth A Tippett Barr, Joep J van Oosterhout, Dorothy Mbori-Ngacha, Erik J Schouten, Sundeep Gupta, Amakobe Sande, Gerald Zomba, Hannock Tweya, Edgar Lungu, Deborah Kajoka, Pius Tih, Andreas Jahn
The acceleration of prevention of mother-to-child transmission (PMTCT) activities, coupled with the rollout of 2010 World Health Organization (WHO) guidelines, led to important discussions and innovations at global and country levels. One paradigm-shifting innovation was Option B+ in Malawi. It was later included in WHO guidelines and eventually adopted by all 22 Global Plan priority countries. This article presents Malawi's experience with designing and implementing Option B+ and provides complementary narratives from Cameroon and Tanzania...
May 1, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28397306/a-review-of-cognitive-impairments-in-children-with-intellectual-disabilities-implications-for-cognitive-behaviour-therapy
#15
Anastasia Hronis, Lynette Roberts, Ian I Kneebone
OBJECTIVE: Nearly half of children with intellectual disability (ID) have comorbid affective disorders. These problems are chronic if left untreated and can significantly impact upon future vocational, educational, and social opportunities. Despite this, there is a paucity of research into effective treatments for this population. Notably, one of the most supported of psychological therapies, cognitive behaviour therapy (CBT), remains largely uninvestigated in children with ID. The current review considers the neuropsychological profile of children and adolescents with mild to moderate ID, with a view to informing how CBT might best be adapted for children and adolescents with ID...
April 11, 2017: British Journal of Clinical Psychology
https://www.readbyqxmd.com/read/28395428/-misdiagnosis-and-associated-costs-of-benign-paroxysmal-positional-vertigo
#16
S X Qian, F Li, J H Zhuang, Y Chen, H L Yang, X W Zhou, H H Gu, B Gao
Objective: The aims of this study were to investigate the misdiagnosis of benign paroxysmal positional vertigo (BPPV) and to estimate the associated costs. Methods: During October 2015 to December 2015, eighty patients were diagnosed with BPPV in the outpatient dizziness clinic of Shanghai Changzheng Hospital and the clinical data of all the 80 patients were collected including the demographic and clinical characteristics, the history of diagnosis, inappropriate diagnostic tests, costs of the medical tests, transportation and accommodation...
April 11, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28392409/a-rapid-isothermal-assay-for-the-detection-of-hop-stunt-viroid-in-hop-plants-humulus-lupulus-and-its-application-in-disease-surveys
#17
Madhu Kappagantu, Dan Edward V Villamor, Jeff M Bullock, Kenneth C Eastwell
Hop stunt disease caused by Hop stunt viroid (HSVd) is a growing threat to hop cultivation globally. HSVd spreads mainly by use of contaminated planting material and by mechanical means. Thorough testing of hop yards and removal of infected bines are critical components of efforts to control the spread of the disease. Reverse transcription-polymerase chain reaction (RT-PCR) has become the primary technique used for HSVd detection; however, sample handling and analysis are technically challenging. In this study, a robust reverse transcription-recombinase polymerase amplification (RT-RPA) assay was developed to facilitate analysis of multiple samples...
April 7, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28387587/multiple-object-tracking-as-a-tool-for-parametrically-modulating-memory-reactivation
#18
Jordan Poppenk, Ken A Norman
Converging evidence supports the "nonmonotonic plasticity" hypothesis that, although complete retrieval may strengthen memories, partial retrieval weakens them. Yet, the classic experimental paradigms used to study effects of partial retrieval are not ideally suited to doing so, because they lack the parametric control needed to ensure that the memory is activated to the appropriate degree (i.e., that there is some retrieval but not enough to cause memory strengthening). Here, we present a novel procedure designed to accommodate this need...
April 7, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/28383306/dislodgement-resistance-of-zirconia-copings-cemented-onto-zirconia-and-titanium-abutments
#19
Umut Güler, Yasemin Budak, José Renato Cavalcanti Queiroz, Mutlu Özcan
PURPOSE: To determine the effect of the cement type and abutment material on the tensile strength required to dislodge zirconia copings. MATERIALS AND METHODS: Two experimental groups of abutments were prepared: (1) titanium abutments (n = 30) and (2) zirconia abutments (n = 30). Sixty zirconia copings (custom designed) were fabricated using 3-dimensional computer-assisted design to have a 6-mm projection above the abutment to accommodate a hole, through which a wire was inserted to attach the zirconia coping to a universal testing machine...
April 5, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28380953/compact-see-through-3d-head-mounted-display-based-on-wavefront-modulation-with-holographic-grating-filter
#20
Qiankun Gao, Juan Liu, Xinhui Duan, Tao Zhao, Xin Li, Peilin Liu
A compact see-through three-dimensional head-mounted display (3D-HMD) is proposed and investigated in this paper. Two phase holograms are analytically extracted from the object wavefront and uploaded on different zones of the spatial light modulator (SLM). A holographic grating is further used as the frequency filter to couple the separated holograms together for wavefront modulation. The developed preliminary prototype has a simple optical facility and a compact structure (133.8mm × 40.4mm × 35.4mm with a 47...
April 3, 2017: Optics Express
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