keyword
MENU ▼
Read by QxMD icon Read
search

Essential imaging display

keyword
https://www.readbyqxmd.com/read/28808784/the-history-of-optic-chiasm-from-antiquity-to-the-twentieth-century
#1
REVIEW
Claudia Florida Costea, Şerban Turliuc, Cătălin Buzdugă, Andrei Ionuţ Cucu, Gabriela Florenţa Dumitrescu, Anca Sava, Mihaela Dana Turliuc
PURPOSE: The optic chiasm is an essential structure located at the skull base that stirred over time the curiosity of anatomists, who became more and more interested in its structure and function. Through centuries, the optic chiasm was viewed as a vessel crossing, a way of transporting tears secreted by the brain to the eye, integrating images, or responsible for coordinated eye movements. The paper aims to overview the history of understanding the optic chiasm from the beginnings of antiquity to the twentieth century...
August 14, 2017: Child's Nervous System: ChNS: Official Journal of the International Society for Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28806473/flavylium-polymethine-fluorophores-for-imaging-in-the-near-and-shortwave-infrared
#2
Emily D Cosco, Justin R Caram, Oliver T Bruns, Daniel Franke, Rachael A Day, Erik P Farr, Moungi G Bawendi, Ellen May Sletten
Bright fluorophores in the near infrared and shortwave infrared (SWIR) are essential for optical imaging in vivo. Herein, we utilize a 7-dimethylamino flavylium heterocycle to construct a panel of novel red-shifted polymethine dyes, with emission from 680 to 1045 nm. Photophysical characterization reveals that the 1- and 3-methine dyes display enhanced photostabilities and the 5- and 7-methine dyes exhibit exceptional brightness for their respective spectral regions. A micelle formulation of the 7-methine facilitates SWIR imaging in mice...
August 14, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28803829/the-vascular-niche-regulates-hematopoietic-stem-and-progenitor-cell-lodgment-and-expansion-via-klf6a-ccl25b
#3
Yuanyuan Xue, Junhua Lv, Chunxia Zhang, Lu Wang, Dongyuan Ma, Feng Liu
In mammals, hematopoietic stem and progenitor cells (HSPCs) rapidly expand in the fetal liver (FL), but the underlying mechanism remains unclear. Here, we characterize zebrafish caudal hematopoietic tissue (CHT) and identify an important cellular and molecular mechanism of HSPC expansion. Time-lapse imaging showed that HSPCs localize adjacent to vascular endothelial cells (ECs), and their migration and expansion display caudal vein-specific orientation in the CHT. RNA sequencing and functional analysis identified that an EC-expressed transcription factor, Krüppel-like factor 6a (Klf6a), is essential for the CHT niche...
August 9, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28775057/localizing-the-l5-vertebra-using-nerve-morphology-on-mri-an-accurate-and-reliable-technique
#4
M E Peckham, T A Hutchins, S E Stilwill, M K Mills, B J Morrissey, E A R Joiner, R K Sanders, G J Stoddard, L M Shah
BACKGROUND AND PURPOSE: Multiple methods have been used to determine the lumbar vertebral level on MR imaging, particularly when full spine imaging is unavailable. Because postmortem studies show 95% accuracy of numbering the lumbar vertebral bodies by counting the lumbar nerve roots, attention to lumbar nerve morphology on axial MR imaging can provide numbering clues. We sought to determine whether the L5 vertebra could be accurately localized by using nerve morphology on MR imaging...
August 3, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28758913/versatility-of-pyridoxal-phosphate-as-a-coating-of-iron-oxide-nanoparticles
#5
Debora Bonvin, Ulrich J Aschauer, Jessica A M Bastiaansen, Matthias Stuber, Heinrich Hofmann, Marijana Mionić Ebersold
Pyridoxal 5'-phosphate (PLP) is the most important cofactor of vitamin B₆-dependent enzymes, which catalyses a wide range of essential body functions (e.g., metabolism) that could be exploited to specifically target highly metabolic cells, such as tumour metastatic cells. However, the use of PLP as a simultaneous coating and targeting molecule, which at once provides colloidal stability and specific biological effects has not been exploited so far. Therefore, in this work iron oxide nanoparticles (IONPs) were coated by PLP at two different pH values to tune PLP bonding (e...
July 29, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28757666/generating-an-image-that-affords-slant-perception-from-stereo-without-pictorial-cues
#6
J Galeotti, K Macdonald, J Wang, S Horvath, A Zhang, R Klatzky
This paper describes an algorithm for generating a planar image that when tilted provides stereo cues to slant, without contamination from pictorial gradients. As the stimuli derived from this image are ultimately intended for use in studies of slant perception under magnification, a further requirement is that the generated image be suitable for high-definition printing or display on a monitor. A first stage generates an image consisting of overlapping edges with sufficient density that when zoomed, edges that nearly span the original scale are replaced with newly emergent content that leaves the visible edge statistics unchanged...
January 2017: Displays
https://www.readbyqxmd.com/read/28740475/the-cognitive-information-effect-of-televised-news
#7
REVIEW
George Lăzăroiu, Aurel Pera, Ramona O Ştefănescu-Mihăilă, Sofia Bratu, Nela Mircică
The purpose of this review is to summarize the key findings which prove that the biased perceptions of viewers may provide an inaccurate image of the informational validity of televised news. The news may generate distorted recollections of what occurred in particular reported events if displayed routines influence viewers not to pay attention to the essential features of a narrative. Elaborating on Fiske and Hartley (2010), Zelizer (2010), and Gunter (2015), we indicate that the character of the news setting has altered and individuals' news consumption routines have changed in adapting to media advancements...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28729692/extensive-astrocyte-synchronization-advances-neuronal-coupling-in-slow-wave-activity-in-vivo
#8
Zsolt Szabó, László Héja, Gergely Szalay, Orsolya Kékesi, András Füredi, Kornélia Szebényi, Árpád Dobolyi, Tamás I Orbán, Orsolya Kolacsek, Tamás Tompa, Zsombor Miskolczy, László Biczók, Balázs Rózsa, Balázs Sarkadi, Julianna Kardos
Slow wave activity (SWA) is a characteristic brain oscillation in sleep and quiet wakefulness. Although the cell types contributing to SWA genesis are not yet identified, the principal role of neurons in the emergence of this essential cognitive mechanism has not been questioned. To address the possibility of astrocytic involvement in SWA, we used a transgenic rat line expressing a calcium sensitive fluorescent protein in both astrocytes and interneurons and simultaneously imaged astrocytic and neuronal activity in vivo...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28718293/functional-design-of-dielectric-metal-dielectric-based-thin-film-encapsulation-with-heat-transfer-and-flexibility-for-flexible-displays
#9
Jeong Hyun Kwon, Seungyeop Choi, Yongmin Jeon, Hyuncheol Kim, Ki Soo Chang, Kyung Cheol Choi
In this study, a new and efficient dielectric-metal-dielectric-based thin-film encapsulation (DMD-TFE) with an inserted Ag thin film is proposed to guarantee the reliability of flexible displays by improving the barrier properties, mechanical flexibility, and heat dissipation, which are considered to be essential requirements for organic light-emitting diode (OLED) encapsulation. The DMD-TFE, which is composed of Al2O3, Ag, and a silica nanoparticle-embedded sol-gel hybrid nanocomposite, shows a water vapor transmission rate of 8...
August 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28717978/-treatment-strategy-and-planning-for-pilon-fractures
#10
REVIEW
Thomas Mittlmeier, Alice Wichelhaus
BACKGROUND: Pilon fractures are mainly severe and prognostically serious injuries with a high rate of relevant soft tissue involvement. The adequate decision making and choice of treatment in the early phase of trauma are of paramount importance for the final outcome. This essentially encompasses the management of the soft tissue damage, the surgical planning and the differentiated selection of procedures. GOALS/MATERIAL AND METHODS: Most concepts of staged treatment nowadays offer a wide range of options which are integrated into expert-based algorithms...
July 17, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28675672/multi-date-multi-sensor-remote-sensing-reveals-high-density-of-carbon-rich-mountain-peatlands-in-the-p%C3%A3-ramo-of-ecuador
#11
John A Hribljan, Esteban Suarez, Laura Bourgeau-Chavez, Sarah Endres, Erik A Lilleskov, Segundo Chimbolema, Craig Wayson, Eleanor Serocki, Rodney A Chimner
Tropical peatlands store a significant portion of the global soil carbon (C) pool. However, tropical mountain peatlands contain extensive peat soils that have yet to be mapped or included in global C estimates. This lack of data hinders our ability to inform policy and apply sustainable management practices to these peatlands that are experiencing unprecedented high rates of land use and land cover change. Rapid large scale mapping activities are urgently needed to quantify tropical wetland extent and rate of degradation...
July 4, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28674501/the-digestive-tract-of-cephalopods-toward-non-invasive-in-vivo-monitoring-of-its-physiology
#12
Giovanna Ponte, Antonio V Sykes, Gavan M Cooke, Eduardo Almansa, Paul L R Andrews
Ensuring the health and welfare of animals in research is paramount, and the normal functioning of the digestive tract is essential for both. Here we critically assess non- or minimally-invasive techniques which may be used to assess a cephalopod's digestive tract functionality to inform health monitoring. We focus on: (i) predatory response as an indication of appetitive drive; (ii) body weight assessment and interpretation of deviations (e.g., digestive gland weight loss is disproportionate to body weight loss in starvation); (iii) oro-anal transit time requiring novel, standardized techniques to facilitate comparative studies of species and diets; (iv) defecation frequency and analysis of fecal color (diet dependent) and composition (parasites, biomarkers, and cytology); (v) digestive tract endoscopy, but passage of the esophagus through the brain is a technical challenge; (vi) high resolution ultrasound that offers the possibility of imaging the morphology of the digestive tract (e...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28656672/drilling-into-the-functional-significance-of-stereopsis-the-impact-of-stereoscopic-information-on-surgical-performance
#13
Loulwa M Al-Saud, Faisal Mushtaq, Isra'a Mirghani, Ahmed Balkhoyor, Andrew Keeling, Michael Manogue, Mark A Mon-Williams
PURPOSE: One suggested advantage of human binocular vision is the facilitation of sophisticated motor control behaviours via stereopsis - but little empirical evidence exists to support this suggestion. We examined the functional significance of stereopsis by exploring whether stereopsis is used to perform a highly skilled real-world motor task essential for the occupational practice of dentistry. METHODS: We used a high fidelity virtual reality simulator to study how dentists' performance is affected by the removal of horizontal retinal image disparities under direct and indirect (mirror) observation...
July 2017: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/28654662/generation-of-a-rabbit-single-chain-fragment-variable-scfv-antibody-for-specific-detection-of-bradyrhizobium-sp-doa9-in-both-free-living-and-bacteroid-forms
#14
Nguyen Xuan Vu, Natcha Pruksametanan, Witsanu Srila, Watcharin Yuttavanichakul, Kamonluck Teamtisong, Neung Teaumroong, Nantakorn Boonkerd, Panlada Tittabutr, Montarop Yamabhai
A simple and reliable method for the detection of specific nitrogen-fixing bacteria in both free-living and bacteroid forms is essential for the development and application of biofertilizer. Traditionally, a polyclonal antibody generated from an immunized rabbit was used for detection. However, the disadvantages of using a polyclonal antibody include limited supply and cross-reactivity to related bacterial strains. This is the first report on the application of phage display technology for the generation of a rabbit recombinant monoclonal antibody for specific detection and monitoring of nitrogen-fixing bacteria in both free-living form and in plant nodules...
2017: PloS One
https://www.readbyqxmd.com/read/28614416/multispectral-imaging-reveals-biblical-period-inscription-unnoticed-for-half-a-century
#15
Shira Faigenbaum-Golovin, Anat Mendel-Geberovich, Arie Shaus, Barak Sober, Michael Cordonsky, David Levin, Murray Moinester, Benjamin Sass, Eli Turkel, Eli Piasetzky, Israel Finkelstein
Most surviving biblical period Hebrew inscriptions are ostraca-ink-on-clay texts. They are poorly preserved and once unearthed, fade rapidly. Therefore, proper and timely documentation of ostraca is essential. Here we show a striking example of a hitherto invisible text on the back side of an ostracon revealed via multispectral imaging. This ostracon, found at the desert fortress of Arad and dated to ca. 600 BCE (the eve of Judah's destruction by Nebuchadnezzar), has been on display for half a century. Its front side has been thoroughly studied, while its back side was considered blank...
2017: PloS One
https://www.readbyqxmd.com/read/28598292/effects-of-primary-and-recurrent-sacral-chordoma-on-the-motor-and-nociceptive-function-of-hindlimbs-in-rats-an-orthotopic-spine-model
#16
Rachel Sarabia-Estrada, Alejandro Ruiz-Valls, Sagar R Shah, A Karim Ahmed, Alvaro A Ordonez, Fausto J Rodriguez, Hugo Guerrero-Cazares, Ismael Jimenez-Estrada, Esteban Velarde, Betty Tyler, Yuxin Li, Neil A Phillips, C Rory Goodwin, Rory J Petteys, Sanjay K Jain, Gary L Gallia, Ziya L Gokaslan, Alfredo Quinones-Hinojosa, Daniel M Sciubba
OBJECTIVE Chordoma is a slow-growing, locally aggressive cancer that is minimally responsive to conventional chemotherapy and radiotherapy and has high local recurrence rates after resection. Currently, there are no rodent models of spinal chordoma. In the present study, the authors sought to develop and characterize an orthotopic model of human chordoma in an immunocompromised rat. METHODS Thirty-four immunocompromised rats were randomly allocated to 4 study groups; 22 of the 34 rats were engrafted in the lumbar spine with human chordoma...
August 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28580389/the-f-actin-modulator-swap-70-controls-podosome-patterning-in-osteoclasts
#17
Anne Roscher, Tomoka Hasegawa, Sebastian Dohnke, Carlos Ocaña-Morgner, Norio Amizuka, Rolf Jessberger, Annette I Garbe
Osteoclasts are bone resorbing cells acting as key mediators of bone disorders. Upon adhesion to bone, osteoclasts polarize and reorganize their cytoskeleton to generate a ring-like F-actin-rich structure, the sealing zone, wherein the osteoclast's resorptive organelle, the ruffled border, is formed. The dynamic self-organization of actin-rich adhesive structures, the podosomes, from clusters to belts is crucial for osteoclast-mediated bone degradation. Mice lacking the protein SWAP-70 display an osteopetrotic phenotype due to defective bone resorption caused by impaired actin ring formation in Swap-70(-/-) osteoclasts...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28555456/-acute-polyneuropathies-in-a-hospital-in-the-south-of-spain-ten-years-experience
#18
M M Alonso-Montejo, M C Pradillo, E E Moreno-Medinilla, P Navas-Sanchez, J L Martinez-Anton
INTRODUCTION: Guillain-Barre syndrome is the most frequent cause of acute flaccid paralysis in children. AIM: To describe the characteristics of patients diagnosed with acute polyneuropathies and their long-term progress. PATIENTS AND METHODS: We conducted a retrospective descriptive analysis of children under 14 years of age admitted to our hospital between January 2004 and December 2014. Clinical, demographic and neurophysiological variables were collected together with other imaging tests...
June 1, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28530289/ca-nir-a-ratiometric-near-infrared-calcium-probe-based-on-a-dihydroxanthene-hemicyanine-fluorophore
#19
Mayeul Collot, Flavien Ponsot, Andrey S Klymchenko
Fluorescent calcium probes are essential tools for studying the fluctuation of calcium ions in cells. Herein, we developed Ca-NIR, the first ratiometric calcium probe emitting in the near infrared region. This probe arose from the fusion of a BAPTA chelator and a dihydroxanthene-hemicyanine fluorophore. It is efficiently excited with common 630-640 nm lasers and displays two distinct emission bands depending on the calcium concentration (Kd = ∼8 μM). The physicochemical and spectroscopic properties of Ca-NIR allowed for ratiometric imaging of calcium distribution in live cells...
June 1, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28492303/a-unique-integration-strategy-for-the-rational-design-of-optically-tunable-near-infrared-fluorophores
#20
Hua Chen, Baoli Dong, Yonghe Tang, Weiying Lin
Fluorescence imaging is a rapidly growing technique for noninvasive imaging of biological molecules and processes with high spatial and temporal resolution. For effective biological imaging, it is essential and important to develop robust fluorescent dyes, in particular, near-infrared (NIR) fluorescent dyes with favorable optical properties. Compared with the visible light emitting dyes, NIR dyes have relatively longer emission wavelengths (650-900 nm) with lower energy and are advantageous as imaging agents owing to the minimum photodamage of NIR light to biological samples, deep penetration into tissues, and low interference from autofluorescence of biomolecules...
May 11, 2017: Accounts of Chemical Research
keyword
keyword
43180
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"