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Aircrew equipment – Head injury and protection
Published in Nicholas Green, Steven Gaydos, Hutchison Ewan, Edward Nicol, Handbook of Aviation and Space Medicine, 2019
Nicholas Green, Steven Gaydos, Hutchison Ewan, Edward Nicol
Two basic energy-absorbing systems can be used in protective helmets: Glass fibre shell that breaks up on impact; each time a glass fibre ruptures or is pulled out of its resin matrix, energy is absorbed inelastically. This technique requires a strong, rigid shell.Rigid foam layer beneath the shell; crushes on impact to about 40% of its initial thickness. Provision of a finite stopping distance reduces peak acceleration imposed. In this design, a lighter shell can be employed.
The internal radiation hazard
Published in Alan Martin, Sam Harbison, Karen Beach, Peter Cole, An Introduction to Radiation Protection, 2018
Alan Martin, Sam Harbison, Karen Beach, Peter Cole
Working surfaces should be finished in hard non-porous materials which have the necessary heat- and chemical-resisting properties. The most commonly used materials include the following: Melamine resin plastic laminate such as Formica®. It should be bonded to the backing material with a resin glue to give the necessary temperature resistance.PVC sheet, such as Darvic, which can be welded and is completely self-extinguishing.Stainless steel, but there is a tendency to get physical bonding between it and corrosion products. Also, stainless steels are susceptible to attack from certain chemicals, for example hydrochloric acid.Glass fibre–reinforced resin which can be moulded to shape. This can be treated to make it fire resistant.Modern man-made compounds such as high-pressure laminates (e.g. Trespa®) and advanced composites (e.g. Corian® Polypropylene), which can be welded and heat-formed.
Basic IT for Radiographers
Published in Alexander Peck, Clark’s Essential PACS, RIS and Imaging Informatics, 2017
Cabling. The physical make-up of network cabling is either traditional copper (utilising the flow of electrons/electricity) or now the more common glass fibre-based cabling (utilising the flow of photons/light). Glass fibre-based networking has theoretically much higher speeds than that utilising copper owing to the physics behind the two technologies. However, due to the relative newness of the glass fibre-based networking devices, while it is currently commonplace for the ‘spine’ of a network to utilise this newer technology, the ‘final hop’ (final connection) to the workstation, server, or device typically remains made in copper cable. This will change over the coming years as the higher raw material cost of copper balances out the higher cost of glass fibre installations, with greater throughput (amounts of data that can be moved around) being the consequence.
In vitro evaluations for pharmacokinetic drug-drug interactions of a novel serotonin-dopamine activity modulator, brexpiprazole
Published in Xenobiotica, 2021
Hiroyuki Sasabe, Toshihisa Koga, Masayuki Furukawa, Masayuki Matsunaga, Katsunori Sasahara, Kenta Hashizume, Yoshihiro Oozone, Immaculate Amunom, Mikako Torii, Ken Umehara, Eiji Kashiyama, Kenji Takeuchi
Prior to incubation, glass fibre filters (MF-membrane filters #HAWP02500, Merck Millipore, Burlington, MA) were washed once with an ice-cold stop solution of 10 mmol/L Tris/HEPES, 100 mmol/L KNO3, and 50 mmol/L sucrose. Culture wells were preincubated at 37 °C for 5 min in the reaction buffer consisting of Tris/HEPES, KNO3, 4 mmol/L Mg-ATP, and sucrose plus substrate or inhibitor (45 µL mixture). Then, a 5 µL aliquot of BSEP-expressing or control vesicle solution was added to start the uptake reaction, and the reaction mixture was allowed to proceed at 37 °C for 2 min. All incubations were conducted in triplicate. At the designed time, an ice-cold stop solution (200 µL) was added to terminate the reaction. An aliquot (200 µL) of each mixture was passed through the glass fibre filter by aspiration. Loaded filters were washed twice with 5 mL ice-cold stop solution, transferred to a vial and mixed with 10 mL scintillator cocktail (Insta-Gel Plus, PerkinElmer Inc.) for the measurement of the intravesicular radioactivity. An aliquot (20 µL) of the remaining reaction mixture was mixed with 10 mL of scintillator cocktail for the measurement of the remaining extravesicular radioactivity. The details of the experimental condition in the uptake and transcellular transport assay are presented in Supplementary Table 2.
Patients’ self-report on post-retained restoration is more valuable than expected! Explorative analysis of an 11-year follow-up
Published in Acta Odontologica Scandinavica, 2019
Manja von Stein-Lausnitz, Daniel R. Reissmann, Matthias J. Roggendorf, Guido Sterzenbach, Michael Naumann
Between January 2003 and April 2004, 98 potential participants were consecutively recruited for post-endodontic treatment at the Department of Prosthodontics, Geriatric Dentistry and Craniomandibular Disorders, Charité – Universitätsmedizin Berlin, Germany. Ninety-one participants were included for randomization (Figure 1). Inclusion criteria have been previously described [25]. Participants received post-endodontic restorations with either glass-fibre or titanium posts. One single operator performed post-endodontic treatment procedures including consideration of a root canal filling of at least 4mm after post space preparation, an adhesively luted endodontic post, a 2 mm ferrule design, and a biological width of 2–3mm. Final restorations (single crowns, fixed dental prostheses, removable dental prostheses) were placed in the dental student course.
Quantum dot-based lateral-flow immunoassay for rapid detection of rhein using specific egg yolk antibodies
Published in Artificial Cells, Nanomedicine, and Biotechnology, 2018
Yue Zhang, Hui Kong, Xiaoman Liu, Jinjun Cheng, Meiling Zhang, Yongzhi Wang, Fang Lu, Huihua Qu, Yan Zhao
The LCS consisted of a sample pad, a conjugate pad, a nitrocellulose membrane, an absorbent pad and a plastic backing sheet. A schematic diagram of the LCS is shown in Figure 2(A) and the assembly of the QD-based dipstick is shown in Figure 2(B). Sample pads made of glass fibre (XQ-Y7) and conjugated pads made of glass fibre (Ahlstrom 8964) were treated with Tris–HCl (pH 8.8) containing 1% (w/v) BSA, 0.5% (v/v) Tween 20, 0.1% (w/v) casein and 1% (w/v) polyethylene glycol 20,000 for 1 min. The pads were dried in an oven at 37 °C for 1 h and kept in a hermetically sealed bag at room temperature before use. For each test, 50 μL sample solution was dripped onto the sample hold, the QDs-IgY conjugate solubilized by the sample solution reacted with RHE. The QDs were capable of emitting strong fluorescence in the inspect window under 365 nm.