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https://www.readbyqxmd.com/read/28344912/the-topography-of-a-continental-indenter-the-interplay-between-crustal-deformation-erosion-and-base-level-changes-in-the-eastern-southern-alps
#1
J Robl, B Heberer, G Prasicek, F Neubauer, S Hergarten
The topography of the eastern Southern Alps (ESA) reflects indenter tectonics causing crustal shortening, surface uplift, and erosional response. Fluvial drainages were perturbed by Pleistocene glaciations that locally excavated alpine valleys. The Late Miocene desiccation of the Mediterranean Sea and the uplift of the northern Molasse Basin led to significant base level changes in the far field of the ESA and the Eastern Alps (EA), respectively. Among this multitude of mechanisms, the processes that dominate the current topographic evolution of the ESA and the ESA-EA drainage divide have not been identified...
January 2017: Journal of Geophysical Research. Earth Surface
https://www.readbyqxmd.com/read/28344179/first-gross-anatomical-findings-of-an-os-odontoideum
#2
Juan P Sardi, Joe Iwanaga, Rod J Oskouian, R Shane Tubbs
INTRODUCTION: Os odontoideum is an uncommon abnormality of the craniovertebral junction where the tip of the odontoid process lacks continuity with the body of C2. The clinical presentation is variable but can lead to severe neurological impairment. CASE REPORT: We report the gross and radiological findings of a cadaver found to harbor an os odontoideum. CONCLUSION: To our knowledge there are no cadaveric reports in the literature regarding an os odontoideum...
March 23, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28342752/chitosan-doped-hybrid-tio2-nanocomposite-based-sol-gel-coating-for-the-corrosion-resistance-of-aluminum-metal-in-3-5-nacl-medium
#3
Balaji J, Sethuraman M G
The study outlines the role of chitosan, a biopolymer on corrosion behavior of Hy/nano-TiO2 based sol-gel coating over aluminum metal. In this study organic-inorganic hybrid sols were synthesized through hydrolysis and condensation of 3-glycidoxypropyltrimethoxy silane (GPTMS), tetraethoxysilane (TEOS) and titanium (IV) isopropoxide (TIP) in acidic solution. Chitosan was doped into sol-gel matrix and self-assembled over aluminum substrate. The resultant chitosan-doped-Hy/nano-TiO2 sol-gel coating was characterized by Fourier Transform Infrared (FT-IR) spectra, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), Scanning Electron Microscopy (SEM), Atomic Force Microscopy (AFM) and Energy-Dispersive X-ray Spectroscopy (EDX) analyses...
March 22, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28339726/effect-of-feeding-soybean-meal-and-differently-processed-peas-on-the-gut-mucosal-immune-system-of-broilers
#4
I Röhe, T W Göbel, F Goodarzi Boroojeni, J Zentek
Peas are traditionally used as a protein source for poultry. However, peas contain antinutritional factors (ANF), which are associated with the initiation of local and systemic immune reactions. The current study examined the effect of feeding raw or differently processed peas in comparison with feeding a soybean meal (SBM) based control diet (C) on the gut mucosal immune system of broilers in a 35 day feeding trial. In six replicates, a total of 360 one-day-old male broilers were randomly allocated to four different groups receiving C, or three treatment diets containing raw, fermented, and enzymatically pre-digested peas, each supplying 30% of required crude protein...
February 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339246/impact-of-atomic-scale-contact-geometry-on-andreev-reflection
#5
J Brand, P Ribeiro, N Néel, S Kirchner, J Kröger
Charge transport has been examined in junctions comprising the normal-metal tip of a low-temperature scanning tunneling microscope, the surface of a conventional superconductor, and adsorbed C_{60} molecules. The Bardeen-Cooper-Schrieffer energy gap gradually evolves into a zero-bias peak with decreasing electrode separation. The peak is assigned to the spectroscopic signature of Andreev reflection. The conductance due to Andreev reflection is determined by the atomic termination of the tip apex and the molecular adsorption orientation...
March 10, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28336360/gain-a-graph-based-method-to-automatically-analyze-neurite-outgrowth-in-cell-cultures
#6
B L Long, H Li, A Mahadevan, T Tang, K Balotin, N Grandel, J Soto, S Y Wong, A Abrego, S Li, A A Qutub
BACKGROUND: Neurite outgrowth is a metric widely used to assess the success of in vitro neural stem cell differentiation or neuron reprogramming protocols and of high-content screening assays for neural regenerative drug discovery. However, neurite measurements are tedious to perform manually, and there is a paucity of freely available, fully automated software to determine neurite measurements and neuron counting. To provide such a tool to the neurobiology, stem cell, cell engineering, and neuroregenerative communities, we developed an algorithm for performing high-throughput neurite analysis in immunofluorescence images...
March 20, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28334335/antagonism-between-two-root-associated-beneficial-pseudomonas-strains-does-not-affect-plant-growth-promotion-and-induced-resistance-against-a-leaf-chewing-herbivore
#7
Nurmi Pangesti, Simon Vandenbrande, Ana Pineda, Marcel Dicke, Jos M Raaijmakers, Joop J A Van Loon
Plant growth-promoting microbes residing on the roots may cooperate or compete, thereby affecting their collective benefit to the host plant. Pseudomonas simiae WCS417r (formerly known as P. fluorescens WCS417r) and Pseudomonas fluorescens SS101 are well known for their ability to induce systemic resistance (ISR) in Arabidopsis. Here, we evaluate how these species interact on the roots of Arabidopsis thaliana Col-0 and how their co-inoculation affects plant defense to the leaf-chewing herbivore Mamestra brassicae and plant growth promotion...
March 15, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28334303/characterization-of-direct-current-electrical-penetration-graph-waveforms-and-correlation-with-the-probing-behavior-of-matsumuratettix-hiroglyphicus-hemiptera-cicadellidae-the-insect-vector-of-sugarcane-white-leaf-phytoplasma
#8
J Roddee, Y Kobori, H Yorozuya, Y Hanboonsong
The leafhopper Matsumuratettix hiroglyphicus (Matsumura) (Hemiptera: Cicadellidae) is an important vector of phytoplasma causing white leaf disease in sugarcane. Thus, the aim of our study was to understand and describe the stylet-probing activities of this vector while feeding on sugarcane plants, by using direct current (DC) electrical penetration graph (EPG) monitoring. The EPG signals were classified into six distinct waveforms, according to amplitude, frequency, voltage level, and electrical origin of the observed traces during stylet penetration into the host plant tissues (probing)...
March 16, 2017: Journal of Economic Entomology
https://www.readbyqxmd.com/read/28329438/influence-of-clinical-use-on-physical-structural-surface-properties-and-electrochemical-potential-of-niti-endodontic-instruments
#9
E S J Pereira, C C F Amaral, J A P Gomes, O A Peters, V T L Buono, M G A Bahia
AIM: To investigate the surface morphology and electrochemical potential of superelastic (SE), M-Wire (MW), and shape memory technology (SMT) NiTi instruments before and after single clinical use in vivo. METHODOLOGY: A total of 60 ProTaper Universal F2 (PTU - SE), ProTaper Next X2 (PTN - MW), Typhoon (TYP), Hyflex (HF) and Vortex Blue (VB), the last three SMT, and size 25, .06 taper (n = 6 of each type) files were examined. Scanning electron microscopy (SEM), X-ray energy-dispersive spectroscopy (EDS) and electrochemical potential analysis were employed before and after clinical use...
March 22, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28323667/central-venous-access-in-children-indications-devices-and-risks
#10
Guillermo Ares, Catherine J Hunter
PURPOSE OF REVIEW: Central venous catheters (CVCs) have a prominent role in the diagnostic and therapy of neonates and children. Herein, we describe the multiple indications for CVC use and the different devices available for central venous access. Given the prevalent use of CVCs, healthcare systems are focused on reducing complications from their use, particularly central line-associated bloodstream infections (CLABSIs). The most up-to-date information available sheds light on best practices and future areas of investigation...
March 18, 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28316288/donor-site-morbidities-resulting-from-conchal-cartilage-harvesting-in-rhinoplasty
#11
M Y Lan, J P Park, Y J Jang
OBJECTIVE: Conchal cartilage is frequently used in rhinoplasty, but donor site morbidity data are seldom reported. This study aimed to investigate the complications of conchal cartilage harvesting in rhinoplasty. METHODS: A retrospective chart review of 372 patients who underwent conchal cartilage harvesting for rhinoplasty was conducted. Data regarding patient demographics, types of nasal deformities, graft usage and complications were analysed. RESULTS: A total of 372 patients who underwent conchal cartilage harvesting for rhinoplasty were enrolled...
March 20, 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/28315484/probing-fast-ribozyme-reactions-under-biological-conditions-with-rapid-quench-flow-kinetics
#12
Jamie L Bingaman, Kyle J Messina, Philip C Bevilacqua
Reaction kinetics on the millisecond timescale pervade the protein and RNA fields. To study such reactions, investigators often perturb the system with abiological solution conditions or substrates in order to slow the rate to timescales accessible by hand mixing; however, such perturbations can change the rate-limiting step and obscure key folding and chemical steps that are found under biological conditions. Mechanical methods for collecting data on the millisecond timescale, which allow these perturbations to be avoided, have been developed over the last few decades...
March 14, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28314869/-operative-treatment-of-terrible-triad-injury-of-the-elbow-open-reduction-and-internal-fixation
#13
R Babst, C Schraner, F J P Beeres
AIM OF SURGERY: Reconstruction of the most important ligamentous and osseus structures of the elbow after terrible triad injury via the radial head to the lateral collateral ligament complex (LCL) and if necessary beginning at the coronoid process. The aim is a stable concentrically guided elbow with early functional follow-up treatment. The approach depends on the intraoperatively tested stability. INDICATIONS: Osteoligamentous terrible triad injury pattern with or without subluxation position following reduction and temporary immobilization...
March 17, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28304320/optimal-radiologic-position-of-an-umbilical-venous-catheter-tip-as-determined-by-echocardiography-in-very-low-birth-weight-newborns
#14
B C F Karber, J Nielsen, D Balsam, C Messina, D Davidson
OBJECTIVE: To compare chest X-ray with echocardiogram (ECHO) in the localization of an umbilical venous catheter (UVC) tip in very low birth weight infants (VLBW). Secondary objectives determined the association between techniques for tip placement by the vertebral body level on X-ray, as well as the length of the thoracic inferior vena cava-right atrial (TIVC-RA) junction by ECHO. STUDY DESIGN: Prospective, sequentially enrolled, masked, single regional perinatal center study...
March 16, 2017: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/28304314/peripherally-inserted-central-catheter-in-extremely-preterm-infants-characteristics-and-influencing-factors
#15
J van den Berg, J Lööf Åström, J Olofsson, M Fridlund, A Farooqi
OBJECTIVE: To evaluate the duration of catheter stay, incidence of non-elective removal and rates of complications associated with peripherally inserted central catheters (PICCs) in relation to different catheter positions in extremely preterm infants (EPT, <28 weeks of gestation). METHODS: A retrospective analysis of Peripherally Inserted Central Catheters (PICCs) inserted in EPT infants over a 10-year period, from January 2004 through December 2013 (mean gestational age, 25...
March 16, 2017: Journal of Neonatal-perinatal Medicine
https://www.readbyqxmd.com/read/28303565/morphometry-and-microanatomy-of-the-barbels-of-the-common-sawshark-pristiophorus-cirratus-pristiophoridae-implications-for-pristiophorid-behaviour
#16
R J Nevatte, J E Williamson, N G F Vella, V Raoult, B E Wueringer
The internal anatomy of the barbels of the common sawshark Pristiophorus cirratus was examined with light microscopy to clarify their sensory role. No sensory structures such as taste buds (chemoreception), ampullae of Lorenzini (electroreception) or free neuromasts (lateral line mechanoreception) could be located in the barbels. The presence of bundles of nerve fibres, however, indicates a tactile function for the barbels. Conveyance of information regarding potentially damaging stimuli (nociception) and temperature (thermoception) cannot be excluded at this stage...
March 17, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28303395/movement-of-steel-jacketed-projectiles-in-biological-tissue-in-the-magnetic-field-of-a-3-t-magnetic-resonance-unit
#17
Stephan A Bolliger, Michael J Thali, Dominic Gascho, Sebastian A Poschmann, Sebastian Eggert
PURPOSE: The fact that ferromagnetic bullets can move in air or gelatine when subjected to magnetic resonance (MR) units is well known. A previous study showed that the movement of 7.5-mm GP 11 Suisse bullets also depends on their orientation toward the gantry. In order to compare the movement in gelatine to that in real tissue, we decided to measure the movement of these bullets, as well as 9-mm Luger bullets, in the brain and liver. METHODS: The GP 11 and 9-mm Luger bullets were inserted into the fresh calf brain or pig liver either vertically or horizontally in the x- or z-axis to the gantry...
March 16, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28302612/difficult-lumbar-puncture-pitfalls-and-tips-from-the-trenches
#18
REVIEW
P A Hudgins, A J Fountain, P R Chapman, L M Shah
Lumbar puncture has, for many years, been the responsibility of the internal medicine physician or the neurologist. As more patients have undergone spine surgery and with the current increase in body mass index of the general population, the radiologist has been consulted with increasing frequency to perform lumbar puncture with fluoroscopic guidance. Radiology, in fact, is now the dominant overall provider of lumbar puncture procedures. The procedure is more difficult when the needle length increases, and if fluoroscopy is used, landmarks are more difficult to visualize with increasing subcutaneous fat...
March 16, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28299724/convection-enhanced-delivery
#19
REVIEW
A M Mehta, A M Sonabend, J N Bruce
Convection-enhanced delivery (CED) is a promising technique that generates a pressure gradient at the tip of an infusion catheter to deliver therapeutics directly through the interstitial spaces of the central nervous system. It addresses and offers solutions to many limitations of conventional techniques, allowing for delivery past the blood-brain barrier in a targeted and safe manner that can achieve therapeutic drug concentrations. CED is a broadly applicable technique that can be used to deliver a variety of therapeutic compounds for a diversity of diseases, including malignant gliomas, Parkinson's disease, and Alzheimer's disease...
March 15, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28297863/generation-of-strength-in-a-drying-film-how-fracture-toughness-depends-on-dispersion-properties
#20
Natalie Birk-Braun, Kamran Yunus, Eric J Rees, Wilhelm Schabel, Alexander F Routh
The fracture toughness of colloidal films is measured by characterizing cracks which form during directional drying. Images from a confocal microscope are processed to measure the crack width as a function of distance from the crack tip. Applying theory for thin elastic films the fracture toughness is extracted. It is found that the fracture toughness scales with the particle size to the -0.8 power and that the critical energy release rate scales with the particle size to the -1.3 power. In addition, the fracture toughness is found to increase at lower evaporation rates, but the film thickness does not have a significant effect...
February 2017: Physical Review. E
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