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https://www.readbyqxmd.com/read/29783210/the-effectiveness-of-sphero-cylindrical-correction-at-a-short-distance-in-presbyopic-age-patients-with-the-first-detected-astigmatism
#1
Iryna M Bezkorovayna, Victoria V Ryadnova, Denys O Nakonechnyi, Anna O Bezkorovayna
OBJECTIVE: Introduction: The practical results of optical correction without considering the cylindrical component at close dictance do not always satisfy the patient in everyday visual activity. The aim: Compare the effect of sphero-cylindrical and spherical correction in presbyopic patients with the first detected astigmatism at a close distance work. PATIENTS AND METHODS: Materials and methods: The article presents the results of a survey of 43 patients (86 eyes) aged 38 to 59 years, on average 47 ± 0...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29783207/perspectives-for-applying-the-additional-study-methods-for-diagnostics-optimization-of-postoperative-hypertrophic-scars-of-the-head-and-neck
#2
David S Avetikov, Olha P Bukhanchenko, Ihor O Ivanytskyi, Viktoriia V Aipert, Dmytro V Steblovskyi
OBJECTIVE: Introduction: The issue of improving the quality of diagnosis, prevention and treatment of patients with pathological scarring of the head and neck is being actively developed throughout the world. The aim of the research is to improve diagnostics of hypertrophic scars of the head and neck through the establishment of structural features of scar-modified tissues using RGB-system and ultrasound examination. PATIENTS AND METHODS: Materials and methods: In this study, 60 patients with hypertrophic scars of the head and neck were examined...
2018: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29783177/evaluating-long-term-patterns-of-decreasing-groundwater-discharge-through-a-lake-bottom-permeable-reactive-barrier
#3
Timothy D McCobb, Martin A Briggs, Denis R LeBlanc, Frederick D Day-Lewis, Carole D Johnson
Identifying and quantifying groundwater exchange is critical when considering contaminant fate and transport at the groundwater/surface-water interface. In this paper, areally distributed temperature and point seepage measurements are used to efficiently assess spatial and temporal groundwater discharge patterns through a glacial-kettle lakebed area containing a zero-valent iron permeable reactive barrier (PRB). Concern was that the PRB was becoming less permeable with time owing to biogeochemical processes within the PRB...
May 18, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29783169/applying-multi-criteria-analysis-for-preliminary-assessment-of-the-properties-of-alginate-immobilized-myriophyllum-spicatum-in-lake-water-samples
#4
Jelena V Milojković, Jelena B Popović-Djordjević, Lato L Pezo, Ilija D Brčeski, Aleksandar Ž Kostić, Vladan D Milošević, Mirjana D Stojanović
The preliminary assessment of the properties of alginate immobilized aquatic weed Myriophyllum spicatum beads-MsAlg in a multi-element system of nine Serbian lakes water samples was done. Herein, the results obtained in the biosorption experiment with MsAlg contents of twenty-two elements analysed by inductively coupled plasma-optical emission spectrometry, biosorption capacity, element removal efficiency, total hardness (TH) and quality index of water (WQI) are presented. Scanning electron microscopy with energy dispersive X-ray spectroscopy was used for the characterization of M...
May 11, 2018: Water Research
https://www.readbyqxmd.com/read/29783145/electrochemical-biosensor-system-using-a-cmos-microelectrode-array-provides-high-spatially-and-temporally-resolved-images
#5
William Tedjo, Jasmine E Nejad, Rachel Feeny, Lang Yang, Charles S Henry, Stuart Tobet, Tom Chen
The ability to view biological events in real time has contributed significantly to research in the life sciences. While video capture of real time changes in anatomical relationships is important, it is equally important to visualize real time changes in the chemical communications that drive cell behaviors. This paper describes an electrochemical imaging system capable of capturing changes in chemical gradients in live tissue slices. The system consists of a CMOS microchip with 8192 configurable Pt surface electrodes, on-chip potentiostat, on-chip control logic, and a microfluidic device designed to interface with the CMOS chip to support ex vivo tissue experimentation...
April 10, 2018: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/29783141/graphene-oxide-and-carbon-nanodots-co-modified-biobr-nanocomposites-with-enhanced-photocatalytic-4-chlorophenol-degradation-and-mechanism-insight
#6
Songying Qu, Yuhan Xiong, Jun Zhang
Non-metallic graphene oxide (GO) and carbon nanodots (CDots) co-doped BiOBr ternary system (GO/CDots/BiOBr) were successfully synthesized via a simple one-step solvothermal process. The compositional characterization, optical and electrical properties of photocatalysts were investigated in detail. The prepared ternary photocatalysts possessed the excellent visible-light driven photocatalytic 4-chlorophenol (4-CP) degradation. Additionally, the 4-CP removal efficiencies decreased in the order of GO/CDots/BiOBr (88...
May 15, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29782971/pharmaceutical-grade-oral-films-as-substrates-for-printed-medicine
#7
M Wimmer-Teubenbacher, C Planchette, H Pichler, D Markl, W K Hsiao, A Paudel, S Stegemann
In contact-less printing, such as piezo-electric drop on demand printing used in the study, the drop formation process is independent of the substrate. This means that having developed a printable formulation, printed pharmaceutical dosage forms can be obtained on any pharmaceutical grade substrate, such as polymer-based films. In this work we evaluated eight different oral films based on their suitability as printing substrates for sodium picosulfate. The different polymer films were compared regarding printed spot morphology, chemical stability and dissolution profile...
May 18, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29782918/bdnf-haploinsufficiency-exerts-a-transient-and-regionally-different-influence-upon-oligodendroglial-lineage-cells-during-postnatal-development
#8
Madeline Nicholson, Rhiannon J Wood, Jessica L Fletcher, Maarten van den Buuse, Simon S Murray, Junhua Xiao
The Brain-Derived Neurotrophic Factor (BDNF) plays important roles in promoting myelination in the developing central nervous system (CNS), however the influence it exerts on oligodendrocyte development in vivo remain unclear. As BDNF knockout mice die in the perinatal period, we undertook a systematic developmental analysis of oligodendroglial lineage cells within multiple CNS regions of BDNF heterozygous (HET) mice. Our data identify that BDNF heterozygosity results in transient reductions in oligodendroglial lineage cell density and progression that are largely restricted to the optic nerve, whereas the corpus callosum, cerebral cortex, basal forebrain and spinal cord white matter tracts are unaffected...
May 18, 2018: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/29782826/sheets-of-human-retinal-progenitor-transplants-improve-vision-in-rats-with-severe-retinal-degeneration
#9
Bin Lin, Bryce T McLelland, Anuradha Mathur, Robert B Aramant, Magdalene J Seiler
Loss of photoreceptors and other retinal cells is a common endpoint in retinal degenerate (RD) diseases that cause blindness. Retinal transplantation is a potential therapy to replace damaged retinal cells and improve vision. In this study, we examined the development of human fetal retinal sheets with or without their retinal pigment epithelium (RPE) transplanted to immunodeficient retinal degenerate rho S334ter-3 rats. Sheets were dissected from fetal human eyes (11-15.7 weeks gestation) and then transplanted to the subretinal space of 24-31 d old RD nude rats...
May 18, 2018: Experimental Eye Research
https://www.readbyqxmd.com/read/29782823/changing-the-site-energy-of-per-614-in-the-peridinin-chlorophyll-a-protein-does-not-alter-its-capability-of-chlorophyll-triplet-quenching
#10
Alessandro Agostini, Jens Niklas, Tim Schulte, Marilena Di Valentin, Marco Bortolus, Eckhard Hofmann, Wolfgang Lubitz, Donatella Carbonera
The peridinin-chlorophyll-a protein (PCP) is a water-soluble light harvesting protein of the dinoflagellate Amphidinium carterae, employing peridinin (Per) as the main carotenoid to fulfil light harvesting and photo-protective functions. Per molecules bound to the protein experience specific molecular surroundings which lead to different electronic and spectral properties. In the refolded N89 L variant PCP (N89 L-RFPCP) a significant part of the intensity on the long wavelength side of the absorption spectrum is shifted to shorter wavelengths due to a significant change in the Per-614 site energy...
May 18, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29782699/endoplasmic-reticulum-targeted-fluorescent-nanodot-with-large-stokes-shift-for-vesicular-transport-monitoring-and-long-term-bioimaging
#11
Leilei Shi, Xihui Gao, Wangzhang Yuan, Li Xu, Hongping Deng, Chenwei Wu, Jiapei Yang, Xin Jin, Chuan Zhang, Xinyuan Zhu
Herein, a highly stable aggregation-induced emission (AIE) fluorescent nanodot assembled by an amphiphilic quinoxalinone derivative-peptide conjugate, namely Quino-1-Fmoc-RACR (also termed as Q1-PEP), which exhibits large Stokes shift and an endoplasmic reticulum (ER)-targeting capacity for bioimaging is reported. It is found that the resulting nanodot can effectively enter the ER with high fluorescent emission. As the ER is mainly involved in the transport of synthesized proteins in vesicles to the Golgi or lysosomes, the Q1-PEP nanodot with ER-targeting capacity can be used to monitor vesicular transport inside the cells...
May 21, 2018: Small
https://www.readbyqxmd.com/read/29782676/composition-graded-cesium-lead-halide-perovskite-nanowires-with-tunable-dual-color-lasing-performance
#12
Ling Huang, Qinggang Gao, Ling-Dong Sun, Hao Dong, Shuo Shi, Tong Cai, Qing Liao, Chun-Hua Yan
Cesium lead halide (CsPbX3 ) perovskite has emerged as a promising low-threshold multicolor laser material; however, realizing wavelength-tunable lasing output from a single CsPbX3 nanostructure is still constrained by integrating different composition. Here, the direct synthesis of composition-graded CsPbBrx I3- x nanowires (NWs) is reported through vapor-phase epitaxial growth on mica. The graded composition along the NW, with an increased Br/I from the center to the ends, comes from desynchronized deposition of cesium lead halides and temperature-controlled anion-exchange reaction...
May 21, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29782656/expansion-microscopy
#13
REVIEW
I Cho, J Y Seo, J Chang
Super-resolution optical microscopy techniques have revolutionized how we see and understand biology. In recent past, a new super-resolution optical microscopy technique called expansion microscopy (ExM) was developed. Unlike other pre-existing super-resolution imaging techniques, this technique achieves super-resolution by physically expanding biological specimens via a swellable hydrogel. After the development of ExM, various techniques based on ExM but with improved performance in various aspects, have been developed...
May 21, 2018: Journal of Microscopy
https://www.readbyqxmd.com/read/29782580/magic-circle
#14
Jan Koenderink, Andrea van Doorn, Johan Wagemans
Full-horizon cylindrical projections of the optic array are in common use. One wonders whether the public actually profits from such pictorial information, since the space behind one's back does not exist in visual awareness. In an experiment, a test image included six persons located at the corners of an irregular hexagon centred at the camera. Two persons faced the camera, two turned their back to the camera and two others faced a direction at right angles to the camera. The distances to the camera were unequal and varied from 1 to 2 m...
May 2018: I-Perception
https://www.readbyqxmd.com/read/29782397/novel-preretinal-hair-pin-like-vessel-in-retinal-astrocytic-hamartoma-with-vitreous-hemorrhage
#15
Megumi Soeta, Yusuke Arai, Hidenori Takahashi, Yujiro Fujino, Tatsuro Tanabe, Yuji Inoue, Hidetoshi Kawashima
BACKGROUD/PURPOSE: To report a case of retinal astrocytic hamartoma with vitreous hemorrhage and a hair pin-like vessel adhering to a posterior vitreous membrane. A 33-year-old man with a retinal astrocytic hamartoma presented with vitreous hemorrhage 5 times. METHODS: Multimodal imaging, including fundus photography, fluorescein angiography, optical coherence tomography, and B-mode ultrasonography. RESULTS: Multimodal imaging demonstrated a novel hair pin-like vessel that adhered to the posterior vitreous membrane...
July 2018: Retinal Cases & Brief Reports
https://www.readbyqxmd.com/read/29782332/detection-of-high-risk-thrombophilia-with-an-automated-global-test-the-coagulation-inhibitor-potential-assay
#16
Barbara Réger, Hajna Losonczy, Ágnes Nagy, Ágnes Péterfalvi, Réka Mózes, László Pótó, Nelli Farkas, Gábor L Kovács, Attila Miseta, Alizadeh Hussain, Orsolya Tóth
: The diagnosis of thrombophilia is a cost-consuming and time-consuming process, as each defect should be separately investigated. The Coagulation Inhibitor Potential (CIP) assay is a promising new global test, sensitive for most of the hereditary thrombophilias, developed for manual methodology. We adapt the original method to an optical coagulation analyser. By this automation, the test will be easier, faster and more precise, and it also allows carrying out 18 measurements simultaneously. The CIP assay was performed in 126 healthy subjects and 193 patients with different types of hereditary thrombophilia conditions...
May 17, 2018: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/29782328/post-stroke-visual-neglect-affects-goal-directed-locomotion-in-different-perceptuo-cognitive-conditions-and-on-a-wide-visual-spectrum
#17
Tatiana Ogourtsova, Philippe S Archambault, Anouk Lamontagne
BACKGROUND: Unilateral spatial neglect (USN), a highly prevalent and disabling post-stroke deficit, has been shown to affect the recovery of locomotion. However, our current understanding of USN role in goal-directed locomotion control, and this, in different cognitive/perceptual conditions tapping into daily life demands, is limited. OBJECTIVES: To examine goal-directed locomotion abilities in individuals with and without post-stroke USN vs. healthy controls. METHODS: Participants (n = 45, n = 15 per group) performed goal-directed locomotion trials to actual, remembered and shifting targets located 7 m away at 0° and 15° right/left while immersed in a 3-D virtual environment...
2018: Restorative Neurology and Neuroscience
https://www.readbyqxmd.com/read/29782304/role-of-in-vivo-reflectance-confocal-microscopy-in-the-analysis-of-melanocytic-lesions
#18
Elena-Daniela Serban, Francesca Farnetani, Giovanni Pellacani, Maria Magdalena Constantin
Worldwide melanoma incidence and mortality are increasing (1). Despite the ongoing research, advanced melanoma is still incurable; therefore, the most appropriate solution seems to be early detection combined with complete surgical excision (2). Since the diagnostic protocol of suspicious lesions includes a complete excision with safety margins (2), the problem of unnecessary scarring is significant. The real challenge in this case is to have a properly formulated diagnosis before acquiring a biopsy. Currently available non-invasive techniques are coherence tomography, digital dermoscopy, and reflectance confocal microscopy...
April 2018: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/29782165/linked-cluster-formulation-of-electron-hole-interaction-kernel-in-real-space-representation-without-using-unoccupied-states
#19
Michael G Bayne, Jeremy A Scher, Benjamin H Ellis, Arindam Chakraborty
Electron-hole or quasiparticle representation plays a central role in describing electronic excitations in many-electron systems. For charge-neutral excitation, the electron-hole interaction kernel is the quantity of interest for calculating important excitation properties such as optical gap, optical spectra, electron-hole recombination and electron-hole binding energies. The electron-hole interaction kernel can be formally derived from the density-density correlation function using both Green's function and TDDFT formalism...
May 21, 2018: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/29782152/colorimetric-readout-for-potentiometric-sensors-with-closed-bipolar-electrodes
#20
Sutida Jansod, Maria Cuartero, Thomas Cherubini, Eric Bakker
We present here a general strategy to translate potential change at a potentiometric probe into a tunable color readout. It is achieved with a closed bipolar electrode where the ion-selective component is confined to one end of the electrode while color is generated at the opposite pole, allowing one to physically separate the detection compartment from the sample. An electrical potential is imposed across the bipolar electrode by solution contact such that the potentiometric signal change at the sample side modulates the potential at the detection side...
May 21, 2018: Analytical Chemistry
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