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https://www.readbyqxmd.com/read/28534721/evaluation-of-3d-additively-manufactured-canine-brain-models-for-teaching-veterinary-neuroanatomy
#1
Regina M Schoenfeld-Tacher, Timothy J Horn, Tyler A Scheviak, Kenneth D Royal, Lola C Hudson
Physical specimens are essential to the teaching of veterinary anatomy. While fresh and fixed cadavers have long been the medium of choice, plastinated specimens have gained widespread acceptance as adjuncts to dissection materials. Even though the plastination process increases the durability of specimens, these are still derived from animal tissues and they require periodic replacement if used by students on a regular basis. This study investigated the use of three-dimensional additively manufactured (3D AM) models (colloquially referred to as 3D-printed models) of the canine brain as a replacement for plastinated or formalin-fixed brains...
May 23, 2017: Journal of Veterinary Medical Education
https://www.readbyqxmd.com/read/28534436/perceptions-of-sport-science-students-on-the-potential-applications-and-limitations-of-blended-learning-in-their-education-a-qualitative-study
#2
Justin W L Keogh, Lisa Gowthorp, Michelle McLean
This study sought to gain insight into blended learning-naive sports science students' understanding and perceptions of the potential benefits and limitations of blended (hybrid) learning, which has been defined as the thoughtful integration of face-to-face and online instructional approaches. Five focus groups, each comprising 3-4 students from either the undergraduate or postgraduate sports science programmes were conducted. The focus groups were facilitated by a researcher who was not involved in sports science...
May 23, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28529279/comparing-the-occlusal-contact-area-of-individual-teeth-during-low-level-clenching
#3
Hideta Nishimori, Takashi Iida, Hirona Kamiyama, Yoshihiro Komoda, Ryoko Obara, Takashi Uchida, Misao Kawara, Osamu Komiyama
The aim of this study was to investigate the occlusal contact area (OCA) in individual teeth during low-level tooth clenching in 24 healthy participants. Before measurements were made, the 100% maximum voluntary contraction (MVC) was determined. At baseline, all subjects were instructed to close their mouth and touch the opposing teeth with minimal force. Occlusal contact was recorded during three jaw motor tasks (baseline, 20% MVC, and 40% MVC) using a blue silicone material. OCA thickness was determined from images and defined on five levels: level 1 (0-149 µm), level 2 (0-89 µm), level 3 (0-49 µm), level 4 (0-29 µm), and level 5 (0-4 µm)...
May 19, 2017: Journal of Oral Science
https://www.readbyqxmd.com/read/28514042/effect-of-crystallization-firing-on-marginal-gap-of-cad-cam-fabricated-lithium-disilicate-crowns
#4
Steven A Gold, Jack L Ferracane, Juliana da Costa
PURPOSE: To evaluate the marginal gaps of CAD/CAM (CEREC 3) produced crowns made from leucite-reinforced glass-ceramic (IPS Empress CAD) blocks (LG), and lithium-disilicate (IPS e.max CAD) blocks before (LD-B), and after (LD-A) crystallization firing. MATERIALS AND METHODS: A human molar tooth (#19) was mounted with adjacent teeth on a typodont and prepared for a full-coverage ceramic crown. The typodont was assembled in the mannequin head to simulate clinical conditions...
May 17, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28512512/learning-about-chemiosmosis-and-atp-synthesis-with-animations-outside-of-the-classroom
#5
Eric E Goff, Katie M Reindl, Christina Johnson, Phillip McClean, Erika G Offerdahl, Noah L Schroeder, Alan R White
Many undergraduate biology courses have begun to implement instructional strategies aimed at increasing student interaction with course material outside of the classroom. Two examples of such practices are introducing students to concepts as preparation prior to instruction, and as conceptual reinforcement after the instructional period. Using a three-group design, we investigate the impact of an animation developed as part of the Virtual Cell Animation Collection on the topic of concentration gradients and their role in the actions of ATP synthase as a means of pre-class preparation or post-class reinforcement compared with a no-intervention control group...
April 2017: Journal of Microbiology & Biology Education: JMBE
https://www.readbyqxmd.com/read/28505718/mechanics-of-a-granular-skin
#6
Somnath Karmakar, Anit Sane, S Bhattacharya, Shankar Ghosh
Magic sand, a hydrophobic toy granular material, is widely used in popular science instructions because of its nonintuitive mechanical properties. A detailed study of the failure of an underwater column of magic sand shows that these properties can be traced to a single phenomenon: the system self-generates a cohesive skin that encapsulates the material inside. The skin, consisting of pinned air-water-grain interfaces, shows multiscale mechanical properties: they range from contact-line dynamics in the intragrain roughness scale, to plastic flow at the grain scale, all the way to sample-scale mechanical responses...
April 2017: Physical Review. E
https://www.readbyqxmd.com/read/28503160/challenging-cognitive-control-by-mirrored-stimuli-in-working-memory-matching
#7
Maria Wirth, Robert Gaschler
Cognitive conflict has often been investigated by placing automatic processing originating from learned associations in competition with instructed task demands. Here we explore whether mirror generalization as a congenital mechanism can be employed to create cognitive conflict. Past research suggests that the visual system automatically generates an invariant representation of visual objects and their mirrored counterparts (i.e., mirror generalization), and especially so for lateral reversals (e.g., a cup seen from the left side vs...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28496269/best-practices-for-use-of-blended-learning
#8
Amanda R Margolis, Andrea L Porter, Michael E Pitterle
Objective. To determine instructional best practice recommendations for use of blended learning from the students' perspective. Methods. Three focus groups were created, one for each of the first three years at a school of pharmacy. The focus group discussions were audio recorded and transcribed for content analysis. Results. Ten instructional best practices were identified from the focus groups: setting the stage, consistency when team teaching, timeliness in posting materials, time on task, accountability for online activities, use of structured active learning, instructor use of feedback on student preparation, incorporation of student feedback into the course, short reviews of online material during class, and ensuring technologies are user friendly...
April 2017: American Journal of Pharmaceutical Education
https://www.readbyqxmd.com/read/28490418/identifying-and-understanding-the-health-information-experiences-and-preferences-of-caregivers-of-individuals-with-either-traumatic-brain-injury-spinal-cord-injury-or-burn-injury-a-qualitative-investigation
#9
Nathan T Coffey, James Cassese, Xinsheng Cai, Steven Garfinkel, Drasti Patel, Rebecca Jones, Dahlia Shaewitz, Ali A Weinstein
BACKGROUND: In order to meet the challenges of caring for an injured person, caregivers need access to health information. However, caregivers often feel that they lack adequate information. Previous studies of caregivers have primarily focused on either their time and emotional burdens or their health outcomes, but the information needs of caregivers have not been thoroughly investigated. OBJECTIVE: The purpose of this investigation was to identify the preferred sources of health information for caregivers supporting individuals with injuries and to explore how access to this information could be improved...
May 10, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28488211/calf-augmentation-and-restoration-long-term-results-and-the-review-of-the-reported-complications
#10
Igor Niechajev, Christen Krag
BACKGROUND: Augmentation or reconstruction of the calves is indicated in patients with thin legs, for bodybuilders, or when there is a defect after an injury or illness. The principle of placing implants under the investing crural fascia was worked out in the 1980s. The senior author (I.N.) introduced many technical modifications and improvements for this operation, among them the new instrument, an inserter for the calf implants. Presented patient material is unique in that the more challenging reconstructive cases almost equal the numbers of the aesthetic cases...
May 9, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28485102/a-web-based-peer-feedback-tool-for-physical-examination
#11
Ryan Luther, Lisa Richardson
BACKGROUND: Medical students do not have many formal opportunities to practise physical examinations during their pre-clerkship years. Consequently, they often practise their examination skills with peers outside of formal teaching sessions. There are also few opportunities for observation and feedback on their skills in this area. CONTEXT: The undergraduate medical programme at the University of Toronto is a 4-year programme where students learn clinical skills in the first 2 years prior to beginning clinical rotations...
May 9, 2017: Clinical Teacher
https://www.readbyqxmd.com/read/28483696/spatial-distributions-of-pericellular-stiffness-in-natural-extracellular-matrices-are-dependent-on-cell-mediated-proteolysis-and-contractility
#12
M Keating, A Kurup, M Alvarez-Elizondo, A J Levine, E Botvinick
Bulk tissue stiffness has been correlated with regulation of cellular processes and conversely cells have been shown to remodel their pericellular tissue according to a complex feedback mechanism critical to development, homeostasis, and disease. However, bulk rheological methods mask the dynamics within a heterogeneous fibrous extracellular matrix (ECM) in the region proximal to a cell (pericellular region). Here, we use optical tweezers active microrheology (AMR) to probe the distribution of the complex material response function (α = α' + α'', in units of µm/nN) within a type I collagen ECM, a biomaterial commonly used in tissue engineering...
May 5, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28474746/light-responsive-hierarchically-structured-liquid-crystal-polymer-networks-for-harnessing-cell-adhesion-and-migration
#13
Gülistan Koçer, Jeroen Ter Schiphorst, Matthew Hendrikx, Hailu G Kassa, Philippe Leclère, Albertus P H J Schenning, Pascal Jonkheijm
Extracellular microenvironment is highly dynamic where spatiotemporal regulation of cell-instructive cues such as matrix topography tightly regulates cellular behavior. Recapitulating dynamic changes in stimuli-responsive materials has become an important strategy in regenerative medicine to generate biomaterials which closely mimic the natural microenvironment. Here, light responsive liquid crystal polymer networks are used for their adaptive and programmable nature to form hybrid surfaces presenting micrometer scale topographical cues and changes in nanoscale roughness at the same time to direct cell migration...
May 5, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28473004/the-attitudes-of-family-physicians-toward-a-child-with-delayed-growth-and-development
#14
Servet Aker, Mustafa Kürşat Şahin, Ömer Kınalı, Elif Şimşek Karadağ, Tuğba Korkmaz
Aim The purpose of this study was to assess the attitude of family physicians toward a child with delayed growth and development. BACKGROUND: Primary healthcare professionals play a key role in monitoring growth and development, the best indicator of the child's health status. If delayed growth and development can be detected early, then it is usually possible to restore functioning. METHODS: This descriptive study was performed in Samsun, Turkey, in May and June 2015...
May 5, 2017: Primary Health Care Research & Development
https://www.readbyqxmd.com/read/28458988/migration-of-aluminum-from-food-contact-materials-to-food-a-health-risk-for-consumers-part-ii-of-iii-migration-of-aluminum-from-drinking-bottles-and-moka-pots-made-of-aluminum-to-beverages
#15
Thorsten Stahl, Sandy Falk, Alice Rohrbeck, Sebastian Georgii, Christin Herzog, Alexander Wiegand, Svenja Hotz, Bruce Boschek, Holger Zorn, Hubertus Brunn
BACKGROUND: Drinking bottles and stove-top moka pots made of aluminum have become very popular. Storing drinks in bottles and preparing coffee in a moka pot may result in the migration of aluminum to the beverage. RESULTS/CONCLUSIONS: In a systematic study of aluminum drinking bottles, it has been shown that drinking a mixture of apple juice and mineral water in an aluminum bottle may reach 86.6% of the total weekly intake (TWI) for adults, and drinking tea from an aluminum bottle may exceed the TWI (145%) for a child weighing 15 kg...
2017: Environmental Sciences Europe
https://www.readbyqxmd.com/read/28453677/afs-identification-and-quantification-of-species-composition-by-metagenomic-sequencing
#16
Yongchao Liu, Fabian Ripp, Rene Koeppel, Hanno Schmidt, Sören Lukas Hellmann, Mathias Weber, Christopher Felix Krombholz, Bertil Schmidt, Thomas Hankeln
Summary: DNA-based methods to detect and quantify taxon composition in biological materials are often based on species-specific polymerase chain reaction, limited to detecting species targeted by the assay. Next-generation sequencing overcomes this drawback by untargeted shotgun sequencing of whole metagenomes at affordable cost. Here we present AFS, a software pipeline for quantification of species composition in food. AFS uses metagenomic shotgun sequencing and sequence read counting to infer species proportions...
May 1, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28451799/micro-autologous-fat-transplantation-maft-for-forehead-volumizing-and-contouring
#17
C K Chou, S S Lee, T Y Lin, Y H Huang, H Takahashi, C S Lai, S D Lin, T M Lin
BACKGROUND: Frontal fullness in Asians is often considered to indicate one's public popularity and leadership skills. Numerous materials and techniques have been applied clinically to recontour or volumize the frontal area, with variable results. The micro-autologous fat transplantation (MAFT) technique proposed by Lin et al. (2nd academic congress of Taiwan Cosmetic Association Taipei, Taiwan) in 2007 has demonstrated its feasibility in facial rejuvenation. In the present study, we used an innovative instrument to apply the MAFT technique to frontal augmentation with fat grafting and reported the results...
April 27, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28450444/conceptual-elements-a-detailed-framework-to-support-and-assess-student-learning-of-biology-core-concepts
#18
Tawnya Cary, Janet Branchaw
The Vision and Change in Undergraduate Biology Education: Call to Action report has inspired and supported a nationwide movement to restructure undergraduate biology curricula to address overarching disciplinary concepts and competencies. The report outlines the concepts and competencies generally but does not provide a detailed framework to guide the development of the learning outcomes, instructional materials, and assessment instruments needed to create a reformed biology curriculum. In this essay, we present a detailed Vision and Change core concept framework that articulates key components that transcend subdisciplines and scales for each overarching biological concept, the Conceptual Elements (CE) Framework...
2017: CBE Life Sciences Education
https://www.readbyqxmd.com/read/28447989/fabrication-of-extracellular-matrix-derived-foams-and-microcarriers-as-tissue-specific-cell-culture-and-delivery-platforms
#19
Anna Kornmuller, Cody F C Brown, Claire Yu, Lauren E Flynn
Cell function is mediated by interactions with the extracellular matrix (ECM), which has complex tissue-specific composition and architecture. The focus of this article is on the methods for fabricating ECM-derived porous foams and microcarriers for use as biologically-relevant substrates in advanced 3D in vitro cell culture models or as pro-regenerative scaffolds and cell delivery systems for tissue engineering and regenerative medicine. Using decellularized tissues or purified insoluble collagen as a starting material, the techniques can be applied to synthesize a broad array of tissue-specific bioscaffolds with customizable geometries...
April 11, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28437690/a-guide-to-nursing-students-written-reflections-for-students-and-educators
#20
Jessica Naber, Liz Markley
Experiences from the clinical setting are ideal for building critical thinking skills if reflection is used as a teaching tool. Reflective writing is the purposeful and recurring inspection of thoughts, feelings, and occurrences that coordinate with experiences during practice. Reflecting on clinical experiences develops critical thinking ability, fosters self-understanding, facilitates coping, and leads to improvement in clinical practice (Kennison, 2006). Reflective writing allows students to combine clinical experiences and takeaways with didactic material to better understand both practice and instruction...
April 7, 2017: Nurse Education in Practice
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