keyword
MENU ▼
Read by QxMD icon Read
search

fibre

keyword
https://www.readbyqxmd.com/read/29027945/etched-polymer-fibre-bragg-gratings-and-their-biomedical-sensing-applications
#1
Ginu Rajan, Kishore Bhowmik, Jiangtao Xi, Gang-Ding Peng
Bragg gratings in etched polymer fibres and their unique properties and characteristics are discussed in this paper. Due to the change in material and mechanical properties of the polymer fibre through etching, Bragg gratings inscribed in such fibres show high reflectivity and enhanced intrinsic sensitivity towards strain, temperature, and pressure. The short-term and long-term stability of the gratings and the effect of hysteresis on the dynamic characteristics are also discussed. The unique properties and enhanced intrinsic sensitivity of etched polymer fibre Bragg grating are ideal for the development of high-sensitivity sensors for biomedical applications...
October 13, 2017: Sensors
https://www.readbyqxmd.com/read/29027705/effects-of-dietary-supplementation-of-spices-on-forage-degradability-ruminal-fermentation-in-vivo-digestibility-growth-performance-and-nitrogen-balance-in-black-bengal-goat
#2
M R Chowdhury, M M H Khan, S U Mahfuz, M A Baset
The objective of the study was to evaluate the effects of spices on forage utilization and nitrogen (N) emission using in vitro and in vivo approach. A 6 × 5 factorial triplicate arrangement was used to assess the in vitro degradability of rice straw with control (without spices) and individual (40 mg/g rice straw) spices (cumin, coriander, clove, black cumin, turmeric) at five different incubation times. In vitro dry matter (DM) and organic matter (OM) degradability of rice straw were highest in presence of spices except for clove...
October 13, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29026952/spatially-and-angularly-resolved-spectroscopy-for-in-situ-estimation-of-concentration-and-particle-size-in-colloidal-suspensions
#3
Yi-Chieh Chen, David Foo, Nicolau Dehanov, Suresh N Thennadil
Successful implementation of process analytical technology (PAT) hinges on the ability to make continuous or frequent measurements in-line or at-line of critical product attributes such as composition and particle size, the latter being an important parameter for particulate processes such as suspensions and emulsions. A novel probe-based spatially and angularly-resolved diffuse reflectance measurement (SAR-DRM) system is proposed. This instrument, along with appropriate calibration models, is designed for online monitoring of concentration of chemical species and particle size of the particulate species in process systems involving colloidal suspensions...
October 12, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29026131/mechanical-stress-induces-elastic-fibre-disruption-and-cartilage-matrix-increase-in-ligamentum-flavum
#4
Kazunori Hayashi, Akinobu Suzuki, Sayed Abdullah Ahmadi, Hidetomi Terai, Kentaro Yamada, Masatoshi Hoshino, Hiromitsu Toyoda, Shinji Takahashi, Koji Tamai, Shoichiro Ohyama, Akgar Javid, Mohammad Suhrab Rahmani, Maruf Mohammad Hasib, Hiroaki Nakamura
Lumbar spinal stenosis (LSS) is one of the most frequent causes of low back pain and gait disturbance in the elderly. Ligamentum flavum (LF) hypertrophy is the main pathomechanism of LSS, but the reason for its occurrence is not clearly elucidated. In this study, we established a novel animal model of intervertebral mechanical stress concentration and investigated the biological property of the LF. The LF with mechanical stress concentration showed degeneration with elastic fibres disruption and cartilage matrix increase, which are similar to the findings in hypertrophied LF from patients with LSS...
October 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29026080/all-optical-regenerator-of-multi-channel-signals
#5
Lu Li, Pallavi G Patki, Young B Kwon, Veronika Stelmakh, Brandon D Campbell, Muthiah Annamalai, Taras I Lakoba, Michael Vasilyev
One of the main reasons why nonlinear-optical signal processing (regeneration, logic, etc.) has not yet become a practical alternative to electronic processing is that the all-optical elements with nonlinear input-output relationship have remained inherently single-channel devices (just like their electronic counterparts) and, hence, cannot fully utilise the parallel processing potential of optical fibres and amplifiers. The nonlinear input-output transfer function requires strong optical nonlinearity, e.g...
October 12, 2017: Nature Communications
https://www.readbyqxmd.com/read/29025172/-anti-myelin-oligodendrocyte-glycoprotein-antibodies-in-paediatric-patients-with-optic-neuritis
#6
Helmut Tegetmeyer, Andreas Merkenschlager
Background Myelin oligodendrocyte glycoprotein (MOG) is located on the surface of oligodendrocytes and myelin in the central nervous system. MOG-IgG is associated with acute disseminated encephalomyelitis (ADEM), relapsing and bilateral optic neuritis (NNO), and transverse myelitis (TM) in both paediatric and adult patients. The combination of NNO and TM or other inflammatory brain lesions is a typical feature of neuromyelitis optica spectrum disorders (NMO-SD) which are associated with specific pathogenic autoantibodies against the water channel aquaporin-4 (AQP4-IgG)...
October 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/29024128/foetal-development-of-skeletal-muscle-in-bovines-as-a-function-of-maternal-nutrition-foetal-sex-and-gestational-age
#7
T R S Gionbelli, C M Veloso, P P Rotta, S C Valadares Filho, B C Carvalho, M I Marcondes, C S Cunha, M A S Novaes, L D Prezotto, M S Duarte, M P Gionbelli
To determine the effects of maternal nutrition on modifications of foetal development of the skeletal muscle and possible increase in the potential of skeletal muscle growth in cattle, gestating cows were either fed 190% NRC recommendations (overnourished; ON) or 100% NRC recommendation (control; CO). Interaction between maternal nutrition (MN) and the foetal sex (FS) was also investigated. Foetuses were necropsied at four different time points throughout gestation (139, 199, 241 and 268 days of gestation) to assess the mRNA expression of myogenic, adipogenic and fibrogenic markers in skeletal muscle...
October 10, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29023327/sodium-bicarbonate-supplementation-delays-neuromuscular-fatigue-without-changes-in-performance-outcomes-during-a-basketball-match-simulation-protocol
#8
Paul Ansdell, Jeanne Dekerle
PURPOSE: To investigate the development of neuromuscular fatigue during a basketball game simulation and ascertain whether sodium bicarbonate (NaHCO3) supplementation attenuates any neuromuscular fatigue that persists. METHODS: Ten participants ingested 0.2 g.kg of NaHCO3 (or an equimolar placebo dosage of sodium chloride [NaCl]) 90 and 60 minutes prior to commencing a basketball game simulation (ALK-T vs PLA-T). Isometric maximal voluntary contractions of the knee extensors (MVIC) and potentiated high (100 Hz) and low (10 Hz) frequency doublet twitches were recorded before and after each match quarter for both trials...
October 10, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29022389/the-composition-and-metabolism-of-faecal-microbiota-is-specifically-modulated-by-different-dietary-polysaccharides-and-mucin-an-isothermal-microcalorimetry-study
#9
K Adamberg, K Kolk, M Jaagura, R Vilu, S Adamberg
The metabolic activity of colon microbiota is specifically affected by fibres with various monomer compositions, degree of polymerisation and branching. The supply of a variety of dietary fibres assures the diversity of gut microbial communities considered important for the well-being of the host. The aim of this study was to compare the impact of different oligo- and polysaccharides (galacto- and fructooligosaccharides, resistant starch, levan, inulin, arabinogalactan, xylan, pectin and chitin), and a glycoprotein mucin on the growth and metabolism of faecal microbiota in vitro by using isothermal microcalorimetry (IMC)...
October 12, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/29021614/digital-nonlinearity-compensation-in-high-capacity-optical-communication-systems-considering-signal-spectral-broadening-effect
#10
Tianhua Xu, Boris Karanov, Nikita A Shevchenko, Domaniç Lavery, Gabriele Liga, Robert I Killey, Polina Bayvel
Nyquist-spaced transmission and digital signal processing have proved effective in maximising the spectral efficiency and reach of optical communication systems. In these systems, Kerr nonlinearity determines the performance limits, and leads to spectral broadening of the signals propagating in the fibre. Although digital nonlinearity compensation was validated to be promising for mitigating Kerr nonlinearities, the impact of spectral broadening on nonlinearity compensation has never been quantified. In this paper, the performance of multi-channel digital back-propagation (MC-DBP) for compensating fibre nonlinearities in Nyquist-spaced optical communication systems is investigated, when the effect of signal spectral broadening is considered...
October 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29021164/investigation-of-microvascular-morphological-measures-for-skeletal-muscle-tissue-oxygenation-by-image-based-modelling-in-three-dimensions
#11
B Zeller-Plumhoff, K R Daly, G F Clough, P Schneider, T Roose
The supply of oxygen in sufficient quantity is vital for the correct functioning of all organs in the human body, especially for skeletal muscle during exercise. Traditionally, microvascular oxygen supply capability is assessed by the analysis of morphological measures on transverse cross-sections of muscle, e.g. capillary density or capillary-to-fibre ratio. In this work, we investigate the relationship between microvascular structure and muscle tissue oxygenation in mice. Phase contrast imaging was performed using synchrotron radiation computed tomography (SR CT) to visualize red blood cells (RBCs) within the microvasculature in mouse soleus muscle...
October 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29020717/ulnar-nerve-injury-on-removal-of-a-contraceptive-implant
#12
Eva E O'Grady, Dominic M Power
The close proximity of contraceptive implant placement to the course of the ulnar nerve can result in injury. Several factors have been implicated in this complication including: low BMI, erroneous placement of the implant, implantation over the brachial groove, and migration of the implant from its original insertion. Clinicians should familiarise themselves with the vulnerable neurovascular structures in the area and refer promptly to a specialist if any neurological symptoms develop during placement or removal of these devices...
December 2016: Practitioner
https://www.readbyqxmd.com/read/29020051/a-combination-of-plasma-phospholipid-fatty-acids-and-its-association-with-incidence-of-type-2-diabetes-the-epic-interact-case-cohort-study
#13
Fumiaki Imamura, Stephen J Sharp, Albert Koulman, Matthias B Schulze, Janine Kröger, Julian L Griffin, José M Huerta, Marcela Guevara, Ivonne Sluijs, Antonio Agudo, Eva Ardanaz, Beverley Balkau, Heiner Boeing, Veronique Chajes, Christina C Dahm, Courtney Dow, Guy Fagherazzi, Edith J M Feskens, Paul W Franks, Diana Gavrila, Marc Gunter, Rudolf Kaaks, Timothy J Key, Kay-Tee Khaw, Tilman Kühn, Olle Melander, Elena Molina-Portillo, Peter M Nilsson, Anja Olsen, Kim Overvad, Domenico Palli, Salvatore Panico, Olov Rolandsson, Sabina Sieri, Carlotta Sacerdote, Nadia Slimani, Annemieke M W Spijkerman, Anne Tjønneland, Rosario Tumino, Yvonne T van der Schouw, Claudia Langenberg, Elio Riboli, Nita G Forouhi, Nick J Wareham
BACKGROUND: Combinations of multiple fatty acids may influence cardiometabolic risk more than single fatty acids. The association of a combination of fatty acids with incident type 2 diabetes (T2D) has not been evaluated. METHODS AND FINDINGS: We measured plasma phospholipid fatty acids by gas chromatography in 27,296 adults, including 12,132 incident cases of T2D, over the follow-up period between baseline (1991-1998) and 31 December 2007 in 8 European countries in EPIC-InterAct, a nested case-cohort study...
October 2017: PLoS Medicine
https://www.readbyqxmd.com/read/29020046/mid-infrared-spectroscopy-of-serum-a-promising-non-invasive-method-to-assess-prognosis-in-patients-with-ascites-and-cirrhosis
#14
Maëna Le Corvec, Caroline Jezequel, Valérie Monbet, Nadia Fatih, Frédéric Charpentier, Hugues Tariel, Catherine Boussard-Plédel, Bruno Bureau, Olivier Loréal, Olivier Sire, Edouard Bardou-Jacquet
BACKGROUND & AIMS: Prognostic tests are critical in the management of patients with cirrhosis and ascites. Biological tests or scores perform poorly in that situation. Mid-infrared fibre evanescent wave spectroscopy (MIR-FEWS) which allows for global serum metabolic profiling may provide more relevant information by measuring a wider range of metabolic parameters in serum. Here we present the accuracy of a MIR-FEWS based predictive model for the prognosis of 6 months survival in patients with ascites and cirrhosis...
2017: PloS One
https://www.readbyqxmd.com/read/29019945/micro-and-nanostructured-materials-for-the-development-of-optical-fibre-sensors
#15
REVIEW
Cesar Elosua, Francisco Javier Arregui, Ignacio Del Villar, Carlos Ruiz-Zamarreño, Jesus M Corres, Candido Bariain, Javier Goicoechea, Miguel Hernaez, Pedro J Rivero, Abian B Socorro, Aitor Urrutia, Pedro Sanchez, Pablo Zubiate, Diego Lopez-Torres, Nerea De Acha, Joaquin Ascorbe, Aritz Ozcariz, Ignacio R Matias
The measurement of chemical and biomedical parameters can take advantage of the features exclusively offered by optical fibre: passive nature, electromagnetic immunity and chemical stability are some of the most relevant ones. The small dimensions of the fibre generally require that the sensing material be loaded into a supporting matrix whose morphology is adjusted at a nanometric scale. Thanks to the advances in nanotechnology new deposition methods have been developed: they allow reagents from different chemical nature to be embedded into films with a thickness always below a few microns that also show a relevant aspect ratio to ensure a high transduction interface...
October 11, 2017: Sensors
https://www.readbyqxmd.com/read/29019399/ingestion-of-microplastics-by-freshwater-tubifex-worms
#16
Rachel R Hurley, Jamie C Woodward, James J Rothwell
Microplastic contamination of the aquatic environment is a global issue. Microplastics can be ingested by organisms leading to negative physiological impacts. The ingestion of microplastics by freshwater invertebrates has not been reported outside the laboratory. Here we demonstrate the ingestion of microplastic particles by Tubifex tubifex in a major urban waterbody fed by the River Irwell, Manchester, UK. The host sediments had microplastic concentrations ranging from 56 to 2544 particles kg-1. 87% of the Tubifex ingested microplastic particles were microfibres (55 - 4100 µm in length), whilst the remaining 13% were fragments (50 - 4500 µm in length)...
October 11, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29018928/tactile-localization-biases-are-modulated-by-gaze-direction
#17
Sonia Medina, Luigi Tamè, Matthew R Longo
Identifying the spatial location of touch on the skin surface is a fundamental function of our somatosensory system. Despite the fact that stimulation of even single mechanoreceptive afferent fibres is sufficient to produce clearly localised percepts, tactile localisation can be modulated also by higher level processes such as body posture. This suggests that tactile events are coded using multiple representations using different coordinate systems. Recent reports provide evidence for systematic biases on tactile localisation task, which are thought to result from a supramodal representation of the skin surface...
October 10, 2017: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/29018285/the-ultrastructure-of-spinal-cord-perivascular-spaces-implications-for-the-circulation-of-cerebrospinal-fluid
#18
Magdalena A Lam, Sarah J Hemley, Elmira Najafi, Nicole G F Vella, Lynne E Bilston, Marcus A Stoodley
Perivascular spaces play a pivotal role in the exchange between cerebrospinal and interstitial fluids, and in the clearance of waste in the CNS, yet their precise anatomical components are not well described. The aim of this study was to characterise the ultrastructure of perivascular spaces and their role in the transport of fluid, in the spinal cord of healthy rats, using transmission electron microscopy. The distribution of cerebrospinal fluid tracers injected into the subarachnoid space was studied using light, confocal and electron microscopy...
October 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29017973/modulating-microfibrillar-alignment-and-growth-factor-stimulation-to-regulate-mesenchymal-stem-cell-differentiation
#19
Dinorath Olvera, Binulal N Sathy, Simon F Carroll, Daniel J Kelly
The ideal tissue engineering (TE) strategy for ligament regeneration should recapitulate the bone - calcified cartilage - fibrocartilage - soft tissue interface. Aligned electrospun-fibers have been shown to guide the deposition of a highly organized extracellular matrix (ECM) necessary for ligament TE. However, recapitulating the different tissues observed in the bone-ligament interface using such constructs remains a challenge. This study aimed to explore how fiber alignment and growth factor stimulation interact to regulate the chondrogenic and ligamentous differentiation of mesenchymal stem cells (MSCs)...
October 7, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29017627/mycoprotein-represents-a-bioavailable-and-insulinotropic-non-animal-derived-dietary-protein-source-a-dose-response-study
#20
Mandy V Dunlop, Sean P Kilroe, Joanna L Bowtell, Tim J A Finnigan, Deborah L Salmon, Benjamin T Wall
The anabolic potential of a dietary protein is determined by its ability to elicit postprandial rises in circulating essential amino acids and insulin. Minimal data exist regarding the bioavailability and insulinotropic effects of non-animal-derived protein sources. Mycoprotein is a sustainable and rich source of non-animal-derived dietary protein. We investigated the impact of mycoprotein ingestion, in a dose-response manner, on acute postprandial hyperaminoacidaemia and hyperinsulinaemia. In all, twelve healthy young men completed five experimental trials in a randomised, single-blind, cross-over design...
October 11, 2017: British Journal of Nutrition
keyword
keyword
69409
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"