keyword
MENU ▼
Read by QxMD icon Read
search

Light quality

keyword
https://www.readbyqxmd.com/read/28213907/optimizing-the-analysis-of-dental-enamel-microstructure-in-intact-teeth
#1
Zulieth López Arrieta, Sergio Roberto Peres Line
In most mammalian species enamel prisms are regularly arranged in layers of alternating directions forming an angle of approximately 90°. These successive layers of prisms are known as Hunter-Schreger bands (HSBs). The analysis of HSBs may provide valuable information regarding the species life history, taxon and personal identification, with evident applicability in physical anthropology and forensics. Obtaining good quality digital images of HSBs in intact specimens is not always a feasible task. The major problems are the low contrast of images; the reflection of incident light, which may create areas of intense shine in digital images; and the abrupt decrease in the degree of illumination that occurs after light crosses the vertical cracks, frequently present in enamel...
February 17, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28212663/isolation-of-primary-microglia-from-the-human-post-mortem-brain-effects-of-ante-and-post-mortem-variables
#2
Mark R Mizee, Suzanne S M Miedema, Marlijn van der Poel, Adelia, Karianne G Schuurman, Miriam E van Strien, Jeroen Melief, Joost Smolders, Debbie A Hendrickx, Kirstin M Heutinck, Jörg Hamann, Inge Huitinga
Microglia are key players in the central nervous system in health and disease. Much pioneering research on microglia function has been carried out in vivo with the use of genetic animal models. However, to fully understand the role of microglia in neurological and psychiatric disorders, it is crucial to study primary human microglia from brain donors. We have developed a rapid procedure for the isolation of pure human microglia from autopsy tissue using density gradient centrifugation followed by CD11b-specific cell selection...
February 17, 2017: Acta Neuropathologica Communications
https://www.readbyqxmd.com/read/28212647/an-interpretive-review-of-consensus-statements-on-clinical-guideline-development-and-their-application-in-the-field-of-traditional-and-complementary-medicine
#3
Jennifer Hunter, Matthew Leach, Lesley Braun, Alan Bensoussan
BACKGROUND: Despite ongoing consumer demand and an emerging scientific evidence-base for traditional and complementary medicine (T&CM), there remains a paucity of reliable information in standard clinical guidelines about their use. Often T&CM interventions are not mentioned, or the recommendations arising from these guidelines are unhelpful to end-users (i.e. patients, practitioners and policy makers). Insufficient evidence of efficacy may be a contributing factor; however, often informative recommendations could still be made by drawing on relevant information from other avenues...
February 17, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28211834/is-active-design-changing-the-workplace-a-natural-pre-post-experiment-looking-at-health-behaviour-and-workplace-perceptions
#4
Lina Engelen, Josephine Chau, Erika Bohn-Goldbaum, Sarah Young, Dominique Hespe, Adrian Bauman
BACKGROUND: Active Design is a relatively new concept and evaluation on its effects on healthy behaviour is lacking. OBJECTIVE: To investigate Active Design influence on workplace physical activity, sedentary behaviour, musculoskeletal complaints, and perceptions of the workplace and productivity. METHODS: Participants (n = 118 adults) moving from 14 workplaces into a new building completed an online questionnaire pre- and post-move. The questions related to health behaviours (physical activity, sitting time and sleep); musculoskeletal issues; perceptions of the office environment; productivity; and engagement...
February 17, 2017: Work: a Journal of Prevention, Assessment, and Rehabilitation
https://www.readbyqxmd.com/read/28209508/systematic-review-of-measures-of-impairment-and-activity-limitation-for-person-with-upper-limb-trauma-and-amputation
#5
REVIEW
Linda Resnik, Matt Borgia, Ben Silver, Jill Cancio
OBJECTIVE: Study purposes were to 1) identify outcome measures used in studies of persons with traumatic upper limb injury and/or amputation and 2) evaluate focus, content and psychometric properties of each measure. DATA SOURCES: Searches of PubMed and CINAHL for terms including upper extremity, function, activities of daily living, outcome assessment, amputation and traumatic injuries. STUDY SELECTION: Included articles had a sample of ≥10 adults with limb trauma or amputation, and were in English...
February 13, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28208904/a-cross-sectional-study-of-quality-of-life-among-subjects-with-epilepsy-attending-a-tertiary-care-hospital
#6
M Anu, K Suresh, P L Basavanna
INTRODUCTION: Epilepsy is a chronic disorder associated with profound physical and psychological consequences leading to impaired quality of life (QoL). Evaluation of the QoL among epileptics would throw light on various factors that impair or affect the QoL in such a population. AIM: To study the QoL among epileptic patients attending outpatient departments of a tertiary care hospital and to identify various factors that affect the QoL in such a population. MATERIALS AND METHODS: A cross-sectional observational questionnaire based study, including patients with epilepsy, who were on antiepileptic drugs, on follow-up for minimum one year, aged more than 18years, both sexes and who were seizure free in the previous 24hours...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208671/a-passive-learning-sensor-architecture-for-multimodal-image-labeling-an-application-for-social-robots
#7
Marco A Gutiérrez, Luis J Manso, Harit Pandya, Pedro Núñez
Object detection and classification have countless applications in human-robot interacting systems. It is a necessary skill for autonomous robots that perform tasks in household scenarios. Despite the great advances in deep learning and computer vision, social robots performing non-trivial tasks usually spend most of their time finding and modeling objects. Working in real scenarios means dealing with constant environment changes and relatively low-quality sensor data due to the distance at which objects are often found...
February 11, 2017: Sensors
https://www.readbyqxmd.com/read/28207883/application-of-an-optimized-flow-cytometry-based-quantification-of-platelet-activation-pact-monitoring-platelet-activation-in-platelet-concentrates
#8
Cécile H Kicken, Mark Roest, Yvonne M C Henskens, Bas de Laat, Dana Huskens
BACKGROUND: Previous studies have shown that flow cytometry is a reliable test to quantify platelet function in stored platelet concentrates (PC). It is thought that flow cytometry is laborious and hence expensive. We have optimized the flow cytometry-based quantification of agonist induced platelet activation (PACT) to a labor, time and more cost-efficient test. Currently the quality of PCs is only monitored by visual inspection, because available assays are unreliable or too laborious for use in a clinical transfusion laboratory...
2017: PloS One
https://www.readbyqxmd.com/read/28203350/separate-and-simultaneous-adjustment-of-light-qualities-in-a-real-scene
#9
Ling Xia, Sylvia C Pont, Ingrid Heynderick
Humans are able to estimate light field properties in a scene in that they have expectations of the objects' appearance inside it. Previously, we probed such expectations in a real scene by asking whether a "probe object" fitted a real scene with regard to its lighting. But how well are observers able to interactively adjust the light properties on a "probe object" to its surrounding real scene? Image ambiguities can result in perceptual interactions between light properties. Such interactions formed a major problem for the "readability" of the illumination direction and diffuseness on a matte smooth spherical probe...
January 2017: I-Perception
https://www.readbyqxmd.com/read/28203242/sunlight-modulates-fruit-metabolic-profile-and-shapes-the-spatial-pattern-of-compound-accumulation-within-the-grape-cluster
#10
Noam Reshef, Natasha Walbaum, Nurit Agam, Aaron Fait
Vineyards are characterized by their large spatial variability of solar irradiance (SI) and temperature, known to effectively modulate grape metabolism. To explore the role of sunlight in shaping fruit composition and cluster uniformity, we studied the spatial pattern of incoming irradiance, fruit temperature and metabolic profile within individual grape clusters under three levels of sunlight exposure. The experiment was conducted in a vineyard of Cabernet Sauvignon cv. located in the Negev Highlands, Israel, where excess SI and midday temperatures are known to degrade grape quality...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28202229/requirement-of-the-rna-binding-protein-smpb-during-intracellular-growth-of-listeria-monocytogenes
#11
Mobarak Abu Mraheil, Renate Frantz, Lisa Teubner, Heiko Wendt, Uwe Linne, Jessica Wingerath, Thomas Wirth, Trinad Chakraborty
Bacterial trans-translation is the main quality control mechanism employed to relieve stalled ribosomes. Trans-translation is mediated by the small protein B (SmpB) and transfer-mRNA (tmRNA) ribonucleoprotein complex, which interacts with translational complexes stalled at the 3' end of non-stop mRNAs to release the stalled ribosomes thereby targeting the nascent polypeptides and truncated mRNAs for degradation. The trans-translation system exists with a few exceptions in all bacteria. In the present study, we assessed the contribution of SmpB to the growth and virulence of Listeria monocytogenes, a human intracellular food-borne pathogen that colonizes host tissues to cause severe invasive infections...
February 1, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/28198884/characterization-of-a-liquid-filled-nodeless-anti-resonant-fiber-for-biochemical-sensing
#12
Xiao-Lu Liu, Wei Ding, Ying-Ying Wang, Shou-Fei Gao, Ling Cao, Xian Feng, Pu Wang
We theoretically and experimentally characterize a liquid-filled nodeless anti-resonant fiber (LARF) that could find versatile applications in biochemical sensing. When a hollow-core nodeless anti-resonant fiber (HARF) is filled with a low refractive index liquid such as water or aqueous solutions in the whole hollow area, it preserves its anti-resonant reflection waveguiding mechanism with attributes encompassing the broad transmission bandwidth in UV, visible, and near IR; the neglectable confinement loss; and the acceptable single-mode quality...
February 15, 2017: Optics Letters
https://www.readbyqxmd.com/read/28197998/laser-assisted-subepithelial-keratectomy-lasek-versus-laser-assisted-in-situ-keratomileusis-lasik-for-correcting-myopia
#13
REVIEW
Jocelyn Kuryan, Anjum Cheema, Roy S Chuck
BACKGROUND: Near-sightedness, or myopia, is a condition in which light rays entering the eye along the visual axis focus in front of the retina, resulting in blurred vision. Myopia can be treated with spectacles, contact lenses, or refractive surgery. Options for refractive surgery include laser-assisted subepithelial keratectomy (LASEK) and laser-assisted in-situ keratomileusis (LASIK). Both procedures utilize a laser to shape the corneal tissue (front of the eye) to correct refractive error, and both create flaps before laser treatment of corneal stromal tissue...
February 15, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28197722/reallocating-time-to-sleep-sedentary-and-active-behaviours-in-non-hodgkin-lymphoma-survivors-associations-with-patient-reported-outcomes
#14
Jeff K Vallance, Matthew P Buman, Brigid M Lynch, Terry Boyle
The purpose of this study was to examine potential effects of reallocating time between sleep, sedentary and active behaviours on fatigue symptoms and quality of life in a sample of non-Hodgkin lymphoma survivors. Non-Hodgkin lymphoma survivors identified from the Western Australian Cancer Registry (N = 149) (response rate = 36%; median age = 64 years) wore an Actigraph® GT3X+ accelerometer for 7 days and completed the Fatigue Scale, the Functional Assessment of Cancer Therapy-General and the Pittsburgh Sleep Quality Index...
February 14, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28195982/identification-of-increased-blue-light-reflectivity-in-macular-telangiectasia-type-2-using-scanning-laser-ophthalmoscopy-versus-red-free-fundus-photography
#15
Talha Soorma, Tjebo Heeren, Daniela Florea, Irene Leung, Tunde Peto
PURPOSE: To compare two modalities used for detection of the characteristic parafoveal hyperreflective area seen in macular telangiectasia Type 2. METHODS: Scanning laser ophthalmoscope blue light reflectance was compared with red-free fundus photography imaging. Images were obtained as part of the international Natural History Study of Macular Telangiectasia (MacTel Study). RESULTS: The hyperreflective area can more frequently be seen with scanning laser ophthalmoscope blue light reflectance than with red-free imaging...
February 10, 2017: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/28194946/plasmonic-nanospectroscopy-for-thermal-analysis-of-organic-semiconductor-thin-films
#16
Ferry A A Nugroho, Amaia Diaz de Zerio Mendaza, Camilla Lindqvist, Tomasz J Antosiewicz, Christian Müller, Christoph Langhammer
Organic semiconductors are key materials for the next generation thin film electronic devices like field-effect transistors, light-emitting diodes, and solar cells. Accurate thermal analysis is essential for the fundamental understanding of these materials, for device design, stability studies, and quality control because the desired nanostructures are often far from thermodynamic equilibrium and therefore tend to evolve with time and temperature. However, classical experimental techniques are insufficient because the active layer of most organoelectronic device architectures is typically only on the order of a hundred nanometers or less...
February 8, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28193598/barriers-to-remote-health-interventions-for-type-2-diabetes-a-systematic-review-and-proposed-classification-scheme
#17
Michelle M Alvarado, Hye-Chung Kum, Karla Gonzalez Coronado, Margaret J Foster, Pearl Ortega, Mark A Lawley
BACKGROUND: Diabetes self-management involves adherence to healthy daily habits typically involving blood glucose monitoring, medication, exercise, and diet. To support self-management, some providers have begun testing remote interventions for monitoring and assisting patients between clinic visits. Although some studies have shown success, there are barriers to widespread adoption. OBJECTIVE: The objective of our study was to identify and classify barriers to adoption of remote health for management of type 2 diabetes...
February 13, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28193431/a-comparative-study-of-diploid-versus-triploid-atlantic-salmon-salmo-salar-l-the-effects-of-rearing-temperatures-5-10-and-15%C3%A2-c-on-raw-material-characteristics-and-storage-quality
#18
Jørgen Lerfall, Pål Rune Hasli, Even Flønes Skare, Rolf Erik Olsen, Bjørn Tore Rotabakk, Bjørn Roth, Erik Slinde, Bjørg Egelandsdal
Several major market operators argue that the current level of knowledge about quality is too scant to justify a switch to a large-scale production of triploid salmon. The aim of the present study was, therefore, to elucidate how rearing conditions (5, 10 and 15°C) affect the flesh quality of triploid Atlantic salmon (Salmo salar L., 1.6±0.3kg). As a reference, diploid salmon kept under equal conditions and with equal genetics were used. The main design discriminant was the holding temperature; increased temperature gave increased blood lactate, rigor index (Ir), drip loss (DL), content of astaxanthin and intensity of redness, but reduced muscle pH, cathepsin activity and fillet lightness...
June 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28192738/temporal-variations-in-water-quality-in-a-brackish-tidal-pond-implications-for-governing-processes-and-management-strategies
#19
Wenhui Cui, Ting Fong May Chui
Brackish tidal ponds have been constructed along coastal areas in many parts of the world for aquaculture, including some Ramsar Sites. Such ponds are considered a sustainable, wise use of wetlands if managed properly, but they can also pose serious environmental problems if mismanaged. To understand the governing processes and to promote sustainable management strategies, this study examines the different temporal variations in water quality parameters in a brackish tidal pond located within the wetland complex of the Mai Po Ramsar Site in Hong Kong, China...
February 10, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28189113/monodisperse-mesoporous-silica-nanoparticles-of-distinct-topology
#20
Leilei Luo, Yucang Liang, Egil Sev Erichsen, Reiner Anwander
Monodisperse and uniform high-quality MCM(Mobil Composition of Matter)-48-type CMSNs (Cubic Mesoporous Silica Nanoparticles) are readily prepared by simply optimizing the molar ratio of ethanol and surfactant in the system TEOS-CTAB-NaOH-H2O-EtOH (TEOS=tetraethyl orthosilicate, CTAB=cetyltrimethylammonium bromide, EtOH=ethanol). In the absence of ethanol only hexagonal mesoporous silica with ellipsoidal and spherical morphology are obtained. The presence of ethanol drives a mesophase transformation from hexagonal to mixed hexagonal/cubic, further to purely cubic, and finally to a mixed cubic/lamellar...
January 31, 2017: Journal of Colloid and Interface Science
keyword
keyword
11221
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"