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https://www.readbyqxmd.com/read/29792996/cervical-bracing-practices-after-degenerative-cervical-surgery-a-survey-of-cervical-spine-research-society-members
#1
David J Lunardini, Martin H Krag, Nathan S Mauser, Joon Y Lee, William H Donaldson, James D Kang
BACKGROUND: Context: Prior studies have shown common use of post-operative bracing, despite advances in modern day instrumentation rigidity and little evidence of brace effectiveness. PURPOSE: To document current practice patterns of brace use after degenerative cervical spine surgeries among members of the Cervical Spine Research Society (CSRS), to evaluate trends, and to identify areas of further study. STUDY DESIGN: A questionnaire survey METHODS: A 10 question survey was sent to members of the Cervical Spine Research Society to document current routine bracing practices after various common degenerative cervical spine surgical scenarios, including fusion and non-fusion procedures...
May 21, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29792800/effects-of-enhanced-flexibility-and-pore-size-distribution-on-adsorption-induced-deformation-of-mesoporous-materials
#2
Andrei Kolesnikov, Nikolaj Georgi, Yury A Budkov, Jens Möllmer, Jorg Hofmann, Juergen Adolphs, Roger Gläser
We present a new model of adsorption-induced deformation of mesoporous solids. The model is based on a simplified version of Local Density Functional Theory in the framework of solvation free energy. Instead of density, which is treated as constant here, we used the film thickness and pore radius as order parameters. This allows us to obtain a self-consistent system of equations describing simultaneously the processes of gas adsorption and adsorbent deformation, as well as conditions for capillary condensation and evaporation...
May 24, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29792278/a-novel-endoscopic-grading-system-for-prediction-of-disease-related-outcomes-in-patients-with-diverticulosis
#3
Meara Dean, Joseph Valentino, Kaitlin Ritter, James Church
BACKGROUND: We describe a simple endoscopic grading system of diverticular disease for the assessment of disease severity and prediction of outcomes. METHODS: A retrospective analysis of prospectively maintained colonoscopy database was conducted. A single endoscopist prospectively graded disease severity according to the number and size of diverticula, the degree of muscular hypertrophy and rigidity of the sigmoid colon. RESULTS: 762 patients were included in the analysis...
May 12, 2018: American Journal of Surgery
https://www.readbyqxmd.com/read/29791684/stability-of-the-anterior-arm-of-three-different-hyrax-hybrid-expanders-an-in-vitro-study
#4
Gonzalo de la Iglesia, André Walter, Fernando de la Iglesia, Heinz Winsauer, Andreu Puigdollers
INTRODUCTION: The force applied to the teeth by fixed orthopaedic expanders has previously been studied, but not the force applied to the orthodontic mini-implant (OMI) used to expand the maxilla with Hyrax hybrid expanders (HHE). OBJECTIVE: The aim of this article was to evaluate the clinical safety of the components (OMI, abutment and double wire arms) of three different force-transmitting systems (FTS) for conducting orthopaedic maxillary expansion: Jeil Medical & Tiger Dental™, Microdent™ and Ortholox™...
January 2018: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/29791324/unimorph-mirror-for-adaptive-optics-in-space-telescopes
#5
David Alaluf, Renaud Bastaits, Kainan Wang, Mihaita Horodinca, Grégory Martic, Bilal Mokrani, André Preumont
This paper presents a unimorph deformable mirror intended to be used as secondary corrector in space telescopes. The deformable mirror consists of a single-crystal silicon wafer (76.2 mm diameter, 500 μm thickness) covered with an optical coating on the front side and an array of 25 independent piezoelectric transducer (PZT) actuators acting in d31 mode on the back side. The mirror is mounted on an isostatic support with three position linear actuators controlling the rigid-body motion. The first part of the paper presents the experimental results obtained with the manufactured prototype...
May 10, 2018: Applied Optics
https://www.readbyqxmd.com/read/29790792/dorsal-plating-for-intra-articular-middle-phalangeal-base-fractures-with-volar-instability
#6
Travis A Doering, Andrew S Greenberg, David V Tuckman
BACKGROUND: Intra-articular middle phalangeal base fractures with volar instability are rare injuries with scant literature on optimal management. Our purpose is to describe our method of dorsal plating and report postoperative outcomes. METHODS: This study is a retrospective case review of 5 patients with intra-articular middle phalangeal base fractures with volar proximal interphalangeal joint instability, measuring subjective, clinical, and radiographic outcomes...
May 1, 2018: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29790653/the-impact-of-living-with-morbid-obesity-on-psychological-need-frustration-a-study-with-bariatric-patients
#7
Ángel Megías, David González-Cutre, Vicente J Beltrán-Carrillo, José M Gomis-Díaz, Eduardo Cervelló, Kimberley J Bartholomew
Guided by self-determination theory, the purpose of this study was to gain an understanding of the previous experiences of living with morbid obesity of 10 postbariatric patients enrolled in a physical activity programme. Qualitative data were collected through interviews and diarized observations. A thematic analysis revealed that participants suffered from health and mobility troubles in their daily life and experienced stigmatization and discrimination in most areas of their social functioning. Participants described how these experiences resulted in the thwarting of their basic psychological needs for autonomy, competence and relatedness...
May 23, 2018: Stress and Health: Journal of the International Society for the Investigation of Stress
https://www.readbyqxmd.com/read/29790563/backbone-conformation-affects-duplex-initiation-and-duplex-propagation-in-hybridisation-of-synthetic-h-bonding-oligomers
#8
Giulia Iadevaia, Diego Núñez-Villanueva, Alexander E Stross, Christopher A Hunter
Synthetic oligomers equipped with complementary H-bond donor and acceptor side chains form multiply H-bonded duplexes in organic solvents. Comparison of the duplex forming properties of four families of oligomers with different backbones shows that formation of an extended duplex with three or four inter-strand H-bonds is more challenging than formation of complexes that make only two H-bonds. The stabilities of 1 : 1 complexes formed between length complementary homo-oligomers equipped with either phosphine oxide or phenol recognition modules were measured in toluene...
May 23, 2018: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29790561/polymorphism-of-ag-29-bdt-12-tpp-4-3-cluster-interactions-of-secondary-ligands-and-their-effect-on-solid-state-luminescence
#9
Abhijit Nag, Papri Chakraborty, Mohammad Bodiuzzaman, Tripti Ahuja, Sudhadevi Antharjanam, Thalappil Pradeep
We present the first example of polymorphism (cubic & trigonal) in single crystals of an atomically precise monolayer protected cluster, Ag29(BDT)12(TPP)43-. We demonstrate that C-Hπ interactions of the secondary ligands (TPP) are dominant in a cubic lattice compared to a trigonal lattice, resulting in a greater rigidity of the structure, which in turn, results in a higher luminescence efficiency in it.
May 23, 2018: Nanoscale
https://www.readbyqxmd.com/read/29790520/molecular-based-upconversion-in-homo-heterogeneous-liquids-and-in-micro-nanostructured-solid-materials
#10
L Latterini, G Massaro, M Penconi, P L Gentili, C Roscini, F Ortica
Radiation upconversion can be an elegant and efficient strategy to minimize waste in energy harvesting and storage processes. The upconversion based on triplet-triplet annihilation processes of molecular dyes is a very versatile approach, but it requires a systematic photophysical characterization of the systems to optimize the upconversion yields and develop materials for technological applications. This paper represents an overview of the work carried out in our laboratories for the study and characterization of a molecular dye pair, 2,3,7,8,12,13,17,18-octaethyl-21H,23H-porphyrin platinum(ii) (PtOEP) and 1,3,6,8-tetraphenylpyrene (TPPy), suitable as the sensitizer and emitter, respectively, in a triplet-triplet annihilation based upconversion process...
May 23, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29790269/thermally-activated-self-metalation-of-carboxy-functionalized-porphyrin-films-on-mgo-nanocubes
#11
Fabian Kollhoff, Johannes Schneider, Thomas Berger, Oliver Diwald, Jörg Libuda
We investigated the adsorption of different free-base carboxyl-functionalized porphyrins, 5,10,15,20-tetrakis(4-carboxyphenyl)-21,23H-porphyrin (2H-TCPP) and 5(4-carboxyphenyl)-10,15, 20-triphenyl-21,23H-porphyrin (2H-MCTPP), on MgO nanocubes combining IR, UV-Vis and photoluminescence emission spectroscopy. The thermal behaviour of the films was monitored in-situ during annealing. Both porphyrins bind to the nanocubes by via one and two acid groups respectively, yielding monolayer films consisting of tilted molecules...
May 23, 2018: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/29790208/changes-in-nano-mechanical-properties-of-human-epidermal-cornified-cells-depending-on-their-proximity-to-the-skin-surface
#12
Pascale Milani, Julien Chlasta, Rawad Abdayem, Sanja Kezic, Marek Haftek
During formation of the stratum corneum (SC) barrier, terminally differentiated keratinocytes continue their maturation process within the dead superficial epidermal layer. Morphological studies of isolated human corneocytes have revealed differences between cornified envelopes purified from the deep and superficial SC. We used atomic force microscopy to measure the mechanical properties of native human corneocytes harvested by tape-stripping from different SC depths. Various conditions of data acquisition have been tested and optimized, in order to obtain exploitable and reproducible results...
May 22, 2018: Journal of Molecular Recognition: JMR
https://www.readbyqxmd.com/read/29790092/effects-of-olive-leaf-powder-supplemented-to-fish-feed-on-muscle-protein-of-red-sea-bream
#13
Muh Ali Arsyad, Takashi Akazawa, Chie Nozaki, Makoto Yoshida, Kenichi Oyama, Tatsuo Mukai, Masahiro Ogawa
Olive leaf is known to have the high polyphenol content of 6-9% in dry weight. We investigated the effects of olive leaf powder (OLP) supplemented to fish feed on muscle protein of red sea bream (Pagrus major). Fish reared with feed containing 8% OLP for 40 days had 1.4 times higher myofibril content and 2.2 times higher acid-soluble collagen content than fish reared with control feed for the same period. On the other hand, sarcoplasmic protein content and collagenase activity of the muscle were almost the same between the control fish and OLP-diet fish...
May 22, 2018: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/29789662/spraying-dynamics-in-continuous-wave-laser-printing-of-conductive-inks
#14
Pol Sopeña, Sergio González-Torres, Juan Marcos Fernández-Pradas, Pere Serra
Laser-induced forward transfer (LIFT), though usually associated with pulsed lasers, has been recently shown to be feasible for printing liquid inks with continuous wave (CW) lasers. This is remarkable not only because of the advantages that the new approach presents in terms of cost, but also because of the surprising transfer dynamics associated with it. In this work we carry out a study of CW-LIFT aimed at understanding the new transfer dynamics and its correlation with the printing outcomes. The CW-LIFT of lines of Ag ink at different laser powers and scan speeds revealed a range of conditions that allowed printing conductive lines with good electrical properties...
May 22, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29789465/efficacy-safety-and-usability-of-remifentanil-as-premedication-for-insure-in-preterm-neonates
#15
Hadiyah Y Audil, Sara Tse, Chad Pezzano, Amy Mitchell-van Steele, Joaquim M B Pinheiro
Background : We previously reported a 67% extubation failure with INSURE (Intubation, Surfactant, Extubation) using morphine as analgosedative premedication. Remifentanil, a rapid- and short-acting narcotic, might be ideal for INSURE, but efficacy and safety data for this indication are limited. Objectives : To assess whether remifentanil premedication increases extubation success rates compared with morphine, and to evaluate remifentanil's safety and usability in a teaching hospital context. Methods : Retrospective review of remifentanil orders for premedication, at a large teaching hospital neonatal intensive care unit (NICU)...
May 22, 2018: Children
https://www.readbyqxmd.com/read/29789150/compensation-for-inertial-and-gravity-effects-in-a-moving-force-platform
#16
Sandra K Hnat, Ben J H van Basten, Antonie J van den Bogert
Force plates for human movement analysis provide accurate measurements when mounted rigidly on an inertial reference frame. Large measurement errors occur, however, when the force plate is accelerated, or tilted relative to gravity. This prohibits the use of force plates in human perturbation studies with controlled surface movements, or in conditions where the foundation is moving or not sufficiently rigid. Here we present a linear model to predict the inertial and gravitational artifacts using accelerometer signals...
May 19, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29788716/porous-silsesquioxane-imine-frameworks-as-highly-e%C3%AF-cient-adsorbents-for-cooperative-iodine-capture
#17
Mateusz Janeta, Wojciech Bury, Slawomir Szafert
The efficient capture and storage of radioactive iodine (129 I or 131 I), which can be formed during nuclear energy generation or storage of nuclear waste, is of paramount importance. Herein we present highly efficient aerogels for reversible iodine capture, namely Porous Silsesquioxane-Imine Frameworks (PSIF), constructed by a condensation of octa(3-aminopropyl)silsesquioxane cage compound (OAS-POSS) and selected multitopic aldehydes. The resulting PSIFs are permanently porous (Brunauer-Emmet-Teller (BET) surface areas up to 574 m2 /g), thermally stable and present a combination of micro-, meso- and macropores in their structures...
May 23, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29788158/cell-wall-bound-silicon-optimizes-ammonium-uptake-and-metabolism-in-rice-cells
#18
Huachun Sheng, Jie Ma, Junbao Pu, Lijun Wang
Background and Aims: Turgor-driven plant cell growth depends on cell wall structure and mechanics. Strengthening of cell walls on the basis of an association and interaction with silicon (Si) could lead to improved nutrient uptake and optimized growth and metabolism in rice (Oryza sativa). However, the structural basis and physiological mechanisms of nutrient uptake and metabolism optimization under Si assistance remain obscure. Methods: Single-cell level biophysical measurements, including in situ non-invasive micro-testing (NMT) of NH4+ ion fluxes, atomic force microscopy (AFM) of cell walls, and electrolyte leakage and membrane potential, as well as whole-cell proteomics using isobaric tags for relative and absolute quantification (iTRAQ), were performed...
May 16, 2018: Annals of Botany
https://www.readbyqxmd.com/read/29787893/effect-of-glycerol-on-the-physical-and-mechanical-properties-of-thin-gellan-gum-films-for-oral-drug-delivery
#19
Patrizia Paolicelli, Stefania Petralito, Gabriele Varani, Martina Nardoni, Settimio Pacelli, Laura Di Muzio, Jacopo Tirillò, Cecilia Bartuli, Stefania Cesa, Maria Antonietta Casadei, Alessandra Adrover
In this work, deacylated gellan gum and the plasticizer glycerol were used as primary components for the preparation of thin films intended for the oral delivery of therapeutic molecules. The samples were prepared by a solvent casting method and characterized for their thickness, tensile properties, swelling ability, mucoadhesion capacity and uniform drug distribution. The amount of glycerol was varied from 20% to 75% w/w in order to obtain films with tunable mechanical properties and high drug loading efficiency...
May 19, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29787322/short-term-deposition-of-pm-2-5-particles-on-contact-lens-surfaces-effect-on-oxygen-permeability-and-refractive-index
#20
Zhizhang Dong, Xiaoyan Ding, Yong Li, Yifeng Gan, Yanhui Wang, Libin Xu, Yahong Wang, Zhou Ying, Juan Li
PURPOSES: To identify the deposition of fine (≤2.5 μm diameter) particulate matter (PM) particles (PM2.5 ), on contact lens surfaces and investigate the effects of such deposition on the oxygen permeability (OP) and refractive index (RI) of contact lenses. METHODS: A total of 36 contact lenses, including rigid gas permeable (RGP) and soft (SCL) lenses, was investigated. RGP (n=12) and SCL (n=12) (experimental group) lenses were incubated in a PM2.5 solution for 24 h, after which PM2...
May 22, 2018: Current Eye Research
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