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Journal articles on the topic 'FBG'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Souza, Edson, Pâmela Pinheiro, Felipe Coutinho, et al. "Smart Concrete Using Optical Sensors Based on Bragg Gratings Embedded in a Cementitious Mixture: Cure Monitoring and Beam Test." Sensors 24, no. 24 (2024): 7998. https://doi.org/10.3390/s24247998.

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Smart concrete is a structural element that can combine both sensing and structural capabilities. In addition, smart concrete can monitor the curing of concrete, positively impacting design and construction approaches. In concrete, if the curing process is not well developed, the structural element may develop cracks in this early stage due to shrinkage, decreasing structural mechanical strength. In this paper, a system of measurement using fiber Bragg grating (FBG) sensors for monitoring the curing of concrete was developed to evaluate autogenous shrinkage strain, temperature, and relative hu

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2

Yan, Xiyan, Yan Feng, Min Xu, and Hua Zhang. "Monitoring Nasal Breathing Using an Adjustable FBG Sensing Unit." Sensors 25, no. 13 (2025): 4060. https://doi.org/10.3390/s25134060.

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We have developed an adjustable optical fiber Bragg grating (FBG) sensing unit for monitoring nasal breathing. The FBG sensing unit can accommodate individuals with varying facial dimensions by adjusting the connecting holes of the ear hangers. We employed two FBG configurations: an encapsulated FBG within a silicon tube (FBG1) and a bare FBG (FBG2). Calibration experiments show the temperature sensitivities of 6.77 pm/°C and 6.18 pm/°C, respectively, as well as the pressure sensitivities of 2.05 pm/N and 1.18 pm/N, respectively. We conducted breathe monitoring tests on male and female volunte

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3

Yu, Yang, Bo Liu, and Feng Xia. "Design Optimization of Sensitivity-Enhanced Structure for Fiber Bragg Grating Acoustic Emission Sensor Based on Additive Manufacturing." Sensors 22, no. 2 (2022): 416. http://dx.doi.org/10.3390/s22020416.

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A four-loop shaped structure of fiber Bragg grating (FBG) acoustic emission (AE) sensor based on additive manufacturing (AM) technology is proposed in the letter. The finite element analysis (FEA) method was used to model and analyze the sensor structure. We aimed at improving the sensitivity, the static load analysis, and the dynamic response analysis of the normal FBG acoustic emission sensor and the FBG AE sensor with improved structure parameters. We constructed the FBG AE sensor experimental system based on a narrowband laser demodulation method and test on real acoustic emission signals.

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4

Zhang, Shao Jun, and Yue Ming Liu. "Fabrication of FBG Strain Gauge Used for High Temperature Strain Monitoring." Applied Mechanics and Materials 668-669 (October 2014): 920–23. http://dx.doi.org/10.4028/www.scientific.net/amm.668-669.920.

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Fiber Bragg Grating (FBG) sensing technology is widely used in detection of temperature, strain and etc. Now the application of FBG sensor is limited below 200°C. Application over 200°C is still an engineering challenge since no suitable FBG strain gauge. In this paper, FBG strain gauge structure which consists of three FBGs is designed and fabricated based on the theoretical strain and stress analysis. This strain gauge can be used for the real-time high temperature strain monitoring situation. The elastic high-temperature alloy (10MoWVNb) is chosen as the substrate. The three FBGs with a sim

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5

Magoshi, Innocentia Botlhale, Anwani Wendy Nekhumbe, Mohammed Auwal Ibrahim, June Cheptoo Serem, and Megan Jean Bester. "Gastrointestinal Effects on the Antioxidant and Immunomodulatory Properties of South African Fynbos Honey." International Journal of Food Science 2023 (November 24, 2023): 1–13. http://dx.doi.org/10.1155/2023/2553197.

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The Fynbos biome, Western Cape Province, South Africa, produces a unique honey from Apis mellifera capensis. The bioactivity of Fynbos (FB1-FB6) honeys and Manuka, unique manuka factor 15+ (MAN UMF15+) honey subjected to simulated in vitro digestion, was compared. The effect of each phase of digestion on the antioxidant properties and nitric oxide- (NO-) associated immunomodulatory effects was determined. The total phenolic content of MAN (UMF15+) was higher than that of FB honeys, and following digestion, the percentage bioaccessibility (BA) was 68.6% and 87.1 ± 27.0 % , respectively. With th

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6

Szécsi, Á., A. Szekeres, T. Bartók, G. Oros, M. Bartók, and Á. Mesterházy. "Fumonisin B1-4-producing capacity of Hungarian Fusarium verticillioides isolates." World Mycotoxin Journal 3, no. 1 (2010): 67–76. http://dx.doi.org/10.3920/wmj2009.1152.

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The fumonisin B1-4 (FB1-4) toxin-producing capacities of 60 strains of Fusarium verticillioides isolated in the main maize-cultivating areas of Hungary were screened on rice grains in vitro. The amounts of FB1, FB2, FB3 and FB4 in the extracts of the culture material were determined by RP-HPLC/ESI-IT MS without any sample clean-up. All F. verticillioides strains produced all analogues (FB1-4) of the fumonisin B series. The strains did not differ significantly in their cultural characteristics, though the analytical results allowed the distinction of three idiosyncratic FB1-4-producing chemotyp

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7

Xiong, Pengwen, Xin Huang, Yulong Li, and Peter X. Liu. "A Fiber Bragg Grating Sensing Structure for the Design, Simulation and Stress Strain Monitoring of Human Puncture Surgery." Sensors 19, no. 14 (2019): 3066. http://dx.doi.org/10.3390/s19143066.

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In order to improve the precision and stability of puncture surgical operations to assist doctors in completing fine manipulation, a new of type puncturing needle sensor is proposed based on a fiber Bragg grating (FBG). Compared with the traditional puncture needle sensor, the new type of puncturing needle sensor is able to sense not only the axial force, but also the torque force during the puncture process. A spoke-type structure is designed near the needle tip. In order to eliminate the influence of temperature and realize temperature compensation, a reference fiber method using three FBGs

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8

Liu, Bo, Rui Suo, Kai-ming Zhou, et al. "800nm FBG sensing interrogation system based on tilted FBG." Optoelectronics Letters 3, no. 1 (2007): 62–64. http://dx.doi.org/10.1007/s11801-007-6117-0.

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9

Eid, Mahmoud M. A., and Ahmed Nabih Zaki Rashed. "Basic FBG apodization functions effects on the filtered optical acoustic signal." Indonesian Journal of Electrical Engineering and Computer Science 22, no. 1 (2021): 287. http://dx.doi.org/10.11591/ijeecs.v22.i1.pp287-296.

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<span>This article clarified the basic fiber Bragg grating (FBG) apodization functions effects on the filtered optical acoustic signal (AS). Max optical acoustic power variations after acousto optic filter is clarified with the spectral wavelength variations. FBG apodization functions are uniform, Gaussian, and Tanh. We have tested the max optical acoustic power variations after various apodization FBG functions with the spectral wavelength variations. The max AS power amplitude after the electrical combiner is reported based various Apodization FBG functions. The max optical AS after FB

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10

Eid, Mahmoud M. A., and Ahmed Nabih Zaki Rashed. "Basic FBG apodization functions effects on the filtered optical acoustic signal." Indonesian Journal of Electrical Engineering and Computer Science 22, no. 1 (2021): 287–96. https://doi.org/10.11591/ijeecs.v22.i1.pp287-296.

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This article clarified the basic fiber bragg grating (FBG) apodization functions effects on the filtered optical acoustic signal (AS). Max optical acoustic power variations after acousto optic filter is clarified with the spectral wavelength variations. FBG apodization functions are uniform, Gaussian, and Tanh. We have tested the max optical acoustic power variations after various apodization FBG functions with the spectral wavelength variations. The max AS power amplitude after the electrical combiner is reported based various apodization FBG functions. The max optical AS after FBG is studied

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11

Paz-Delgado, Jorge Adrián, and Angélica Rodríguez-Dorantes. "Endophyte bacteria growth promotion effect on Lemna gibba plants." International Journal of Current Research in Biosciences and Plant Biology 8, no. 11 (2021): 1–8. http://dx.doi.org/10.20546/ijcrbp.2021.811.001.

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Duckweeds a kind of aquatic plants classified as macrophytes, have been considered as nutrient pumps that can help to reduce the eutrophication effects. Studies of endophyte associates focused to their functional analysis contributing the knowledge of plant microbe interactions. This work compared the phytohormones in vitro production efficiency of endophyte bacteria isolated from Lemna gibba plants and their plant growth promoting effect in this plant species. Five endophyte bacteria belonging to Bacillus genera and named: Bacillus sp. strain Fb1, Bacillus sp. strain Fb2, Bacillus sp. strain

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12

Lawrence, Sarah, and Patricia Simpson-Haidaris. "Regulated de novo biosynthesis of fibrinogen in extrahepatic epithelial cells in response to inflammation." Thrombosis and Haemostasis 92, no. 08 (2004): 234–43. http://dx.doi.org/10.1160/th04-01-0024.

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SummaryHepatic fibrinogen (FBG) is upregulated during an acute phase response (APR) induced by glucocorticoids and interleukin (IL)-6. Furthermore, intestine and lung epithelium synthesize FBG after exposure to inflammatory mediators, and both plasma and lung cell-derived FBG, along with fibronectin, assemble in detergent-insoluble extracellular matrices (ECM) of pneumocytes and fibroblasts independent of thrombin or plasmin cleavage. An epitope cryptic in soluble FBG (β15-21) but exposed in matrix-FBG and fibrin induces cell proliferation and actin cytoskeleton reorganization during wound rep

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13

Rybarczyk, Brian J., Sarah O. Lawrence, and Patricia J. Simpson-Haidaris. "Matrix-fibrinogen enhances wound closure by increasing both cell proliferation and migration." Blood 102, no. 12 (2003): 4035–43. http://dx.doi.org/10.1182/blood-2003-03-0822.

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AbstractFibrinogen (FBG) assembles into matrix fibrils of fibroblasts, lung and mammary epithelial cells, but not endothelial cells. Furthermore, cryptic β15-21 residues are exposed in FBG fibrils with no evidence of thrombin or plasmin proteolysis. Herein, the effects of FBG on migration and proliferation of wounded dermal fibroblasts were investigated. FBG preassembled into matrix prior to scrape-wounding induced 3H-thymidine incorporation 8-fold and shortened the time to wound closure 1.6-fold ± 0.1-fold. FBG added immediately after wounding did not enhance either response. Fibroblast growt

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14

Miyashita, Toshinori, Sho Katayama, Ayane Yamamoto, et al. "The Effect of Functional Biomechanics Garment for Walking." International Journal of Environmental Research and Public Health 18, no. 23 (2021): 12415. http://dx.doi.org/10.3390/ijerph182312415.

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The purpose of this study was to investigate the effects of a functional biomechanics garment (FBG) with a lower extremity assist function. 32 healthy male participants were included in this study. Participants were divided into an FBG with taping function group (FBG group) and a compression garment group (CG group). Cadence (steps/min), step length (m), and usual walking speed (m/s) were measured as spatio-temporal data. Kinetics, kinematics data, and dynamic joint stiffness (DJS) of the lower extremity were calculated using a three-dimensional gait analysis system. The FBG group showed signi

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15

Li, Kuo. "Review of the Strain Modulation Methods Used in Fiber Bragg Grating Sensors." Journal of Sensors 2016 (2016): 1–8. http://dx.doi.org/10.1155/2016/1284520.

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Fiber Bragg grating (FBG) is inherently sensitive to temperature and strain. By modulating FBG’s strain, various FBG sensors have been developed, such as sensors with enhanced or reduced temperature sensitivity, strain/displacement sensors, inclinometers, accelerometers, pressure meters, and magnetic field meters. This paper reviews the strain modulation methods used in these FBG sensors and categorizes them according to whether the strain of an FBG is changed evenly. Then, those even-strain-change methods are subcategorized into (1) attaching/embedding an FBG throughout to a base and (2) fixi

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16

Zhang, Guang Jun, Li Wang, and Ying Zhi Su. "In Situ Monitoring Early-Age Properties of Concrete Retaining Wall by Fiber Bragg Grating Monitoring System." Applied Mechanics and Materials 351-352 (August 2013): 1159–62. http://dx.doi.org/10.4028/www.scientific.net/amm.351-352.1159.

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In this paper, FBG temperature sensor and strain sensor have been used to monitor shrinkage and temperature of concrete retaining wall in construction site within its casting early age. As FBG senses both strain and temperature simultaneously, thermal shift of FBG strain senor is compensated by FBG temperature sensor. The test results indicate that this FBG monitoring system is feasible for monitoring concrete properties at its early age. The dual FBG monitoring technique applied in this research could be extended to monitor shrinkage and temperature for other concrete structures.

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17

Lawrence, SO, TW Wright, CW Francis, PJ Fay, and PJ Haidaris. "Purification and functional characterization of homodimeric gamma B- gamma B fibrinogen from rat plasma." Blood 82, no. 8 (1993): 2406–13. http://dx.doi.org/10.1182/blood.v82.8.2406.2406.

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Abstract Heterogeneity in the human and rat plasma fibrinogen (FBG) gamma chains is due to differential splicing of the primary gamma chain mRNA transcript. The subunit composition of FBG containing the predominant form of the gamma chain is homodimeric (human: A alpha 2, B beta 2, gamma 50-gamma 50; rat: A alpha 2, B beta 2, gamma A-gamma A). The subunit composition of FBG containing the longer, minor form of the gamma chain is heterodimeric (human: A alpha 2, B beta 2, gamma 50- gamma 57.5; rat: A alpha 2, B beta 2, gamma A-gamma B). The variant gamma chain-FBGs comprise about 10% of the tot

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18

Lawrence, SO, TW Wright, CW Francis, PJ Fay, and PJ Haidaris. "Purification and functional characterization of homodimeric gamma B- gamma B fibrinogen from rat plasma." Blood 82, no. 8 (1993): 2406–13. http://dx.doi.org/10.1182/blood.v82.8.2406.bloodjournal8282406.

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Heterogeneity in the human and rat plasma fibrinogen (FBG) gamma chains is due to differential splicing of the primary gamma chain mRNA transcript. The subunit composition of FBG containing the predominant form of the gamma chain is homodimeric (human: A alpha 2, B beta 2, gamma 50-gamma 50; rat: A alpha 2, B beta 2, gamma A-gamma A). The subunit composition of FBG containing the longer, minor form of the gamma chain is heterodimeric (human: A alpha 2, B beta 2, gamma 50- gamma 57.5; rat: A alpha 2, B beta 2, gamma A-gamma B). The variant gamma chain-FBGs comprise about 10% of the total plasma

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19

Dedi, Irawan, Ramadhan Khaikal, Saktioto Toto, and Marwin Azwir. "An optimum design of high sensitivity PMMA-coated FBG sensor for temperature measurement." TELKOMNIKA (Telecommunication, Computing, Electronics and Control) 21, no. 2 (2023): 382–89. https://doi.org/10.12928/telkomnika.v21i2.22746.

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Fiber Bragg grating (FBG) with silica material has limitations in measuring mechanical quantities such as strain and temperature, this happens because silica fibers are easy to break at higher transverse or axial strains. This deficiency can be overcome in several ways, one of which is by coating the silica FBG with a coating material made of metal or polymer. In this research, the FBG sensor has been designed by poly methyl methacrylate (PMMA)-coated FBG and silica. The finite element method (FEM) is used to analyze the electric field distribution on the surface of PMMA coated FBG with a coat

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20

Qin, Yuhan, Gaoliang Yan, Yong Qiao, Changle Ma, Juchuan Liu, and Chengchun Tang. "Relationship between Random Blood Glucose, Fasting Blood Glucose, and Gensini Score in Patients with Acute Myocardial Infarction." BioMed Research International 2019 (October 15, 2019): 1–9. http://dx.doi.org/10.1155/2019/9707513.

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Objective. To examine the relationship between admission random blood glucose (RBG), fasting blood glucose (FBG), and Gensini score in patients with acute myocardial infarction (AMI) to clarify the effects of RBG and FBG on the severity of coronary artery disease. Method. A total of 958 consecutive AMI patients who underwent emergency coronary angiography at the Cardiology Department of Zhongda Hospital (affiliated with Southeast University) were enrolled in this study from January 1, 2016, to December 31, 2018. The Gensini score of each patient was calculated according to the results of coron

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21

Jin, Xiu Mei, Yu Mei Lv, and Li Feng Du. "Research on a New Detection Technique of FBG Using OTDR." Advanced Materials Research 317-319 (August 2011): 2346–50. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.2346.

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A new technique of using Optical Time Domain Reflectometry (OTDR) to detect the reflected power of FBG sensing array was researched systematically. The theoretical model between the reflected power detected by OTDR and the reflected wavelength of FBG was established by analyzing, and consequently the selection rule of FBG wavelength in OTDR detection system was proposed. Moreover, experiments about multi-combination of FBGs with high reflectivity were carried out. The cause of dummy peak and resonance peak in OTDR test curves were analyzed, and meanwhile the selection basis of FBG reflectivity

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22

Murianti, Diana, Teguh Prakoso, and Aghus Sofwan. "FBG (FIBER BRAGG GRATING) UNTUK DWDM (DENSE WAVELENGTH DIVISION MULTIPLEXING)." TRANSIENT 7, no. 1 (2018): 77. http://dx.doi.org/10.14710/transient.7.1.77-82.

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Pada era modern ini, tuntutan kebutuhan masyarakat akan layanan komunikasi semakin meningkat. Kebutuhan tersebut meliputi layanan video, suara dan data. Penambahan kapasitas ini dapat dilakukan dengan menggunakan teknologi Dense Wavelength Division Multiplexing (DWDM). Salah satu perangkat yang digunakan teknologi DWDM yaitu Optical Add/Drop Multiplexer (OADM). OADM digunakan untuk melewatkan sinyal dan melakukan fungsi add dan drop. Salah satu perangkat yang mendukung untuk membantu kerja dari OADM adalah Fiber Bragg Grating (FBG). Tujuan pembuatan Penelitian ini adalah mendapatkan parameter

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23

Martin, Rolf J., Rajiv R. Ratan, Michael J. Reding, and Tom S. Olsen. "Higher Blood Glucose within the Normal Range Is Associated with More Severe Strokes." Stroke Research and Treatment 2012 (2012): 1–5. http://dx.doi.org/10.1155/2012/659610.

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Background. Higher fasting blood glucose (FBG) concentrations in the hyperglycemic range are associated with more severe strokes. Whether this association also extends into patients with FBG in the normoglycemic range is unclear. We studied the association of stroke severity and FBG in normoglycemic patients with ischemic stroke in a median of 7 days after stroke when the initial glycemic stress response has resolved.Method and Material. Included were 361 nondiabetic ischemic stroke patients with admission fasting blood glucose within 70–130 mg/dL admitted into an acute stroke rehabilitation u

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24

Haseda, Yuki, Julien Bonefacino, Hwa-Yaw Tam, Shun Chino, Shouhei Koyama, and Hiroaki Ishizawa. "Measurement of Pulse Wave Signals and Blood Pressure by a Plastic Optical Fiber FBG Sensor." Sensors 19, no. 23 (2019): 5088. http://dx.doi.org/10.3390/s19235088.

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Fiber Bragg grating (FBG) sensors fabricated in silica optical fiber (Silica-FBG) have been used to measure the strain of human arteries as pulse wave signals. A variety of vital signs including blood pressure can be derived from these signals. However, silica optical fiber presents a safety risk because it is easily fractured. In this research, an FBG sensor fabricated in plastic optical fiber (POF-FBG) was employed to resolve this problem. Pulse wave signals were measured by POF-FBG and silica-FBG sensors for four subjects. After signal processing, a calibration curve was constructed by part

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Bao-Jin Peng, Yong Zhao, Yan Zhao, and Jian Yang. "Tilt sensor with FBG technology and matched FBG demodulating method." IEEE Sensors Journal 6, no. 1 (2006): 63–66. http://dx.doi.org/10.1109/jsen.2005.845198.

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Chen, Xi Yuan, and Lin Fang. "Performance Analysis and Experimental Verification for FBG Sensors Applied for Smart Structure." Key Engineering Materials 336-338 (April 2007): 1357–60. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.1357.

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Among a variety of fiber sensors, the fiber Bragg grating (FBG) sensor has numerous advantages over other optical fiber sensors. One of the major advantages of this type of sensors is attributed to wavelength-encoded information given by the Bragg grating. Since the wavelength is an absolute parameter, signal from FBG may be processed such that its information remains immune to power fluctuations along the optical path. This inherent characteristic makes the FBG sensors very attractive for application in smart material structure, health monitoring field et al. But FBG sensors are sensitive to

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Nsengiyumva, Isidore, Elijah Mwangi, and George Kamucha. "Performance Analysis of a Linear Gaussian- and tanh-Apodized FBG and Dispersion Compensating Fiber Design for Chromatic Dispersion Compensation in Long-haul Optical Communication Networks." International Journal of Optics 2022 (September 2, 2022): 1–14. http://dx.doi.org/10.1155/2022/5734420.

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This paper investigates a novel compensation technique of dispersion effect mitigation using a combination of three- and four-stage-apodized fiber Bragg gratings (FBG) and dispersion compensating fiber (DCF) designs. Two designs using three-stage and four-stage FBG and DCF in combination have been proposed and compared for their performance in mitigating chromatic dispersion effects at 100 km SMF. The performance of each design has been evaluated using Q-factor results using linear Gaussian- and tanh-apodized fiber Bragg gratings. Each profile manifested different Q-factor results over a range

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28

Jinachandran, Sagar, and Ginu Rajan. "Fibre Bragg Grating Based Acoustic Emission Measurement System for Structural Health Monitoring Applications." Materials 14, no. 4 (2021): 897. http://dx.doi.org/10.3390/ma14040897.

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Fiber Bragg grating (FBG)-based acoustic emission (AE) detection and monitoring is considered as a potential and emerging technology for structural health monitoring (SHM) applications. In this paper, an overview of the FBG-based AE monitoring system is presented, and various technologies and methods used for FBG AE interrogation systems are reviewed and discussed. Various commercial FBG AE sensing systems, SHM applications of FBG AE monitoring, and market potential and recent trends are also discussed.

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29

Simpson Haidaris, Patricia J. "Induction of Fibrinogen Biosynthesis and Secretion From Cultured Pulmonary Epithelial Cells." Blood 89, no. 3 (1997): 873–82. http://dx.doi.org/10.1182/blood.v89.3.873.

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Abstract Although the liver is the primary site of fibrinogen (FBG) synthesis, epithelial cells from diverse tissues have been shown to express one or more of the FBG Aα, Bβ, and γ chain genes. In contrast, marrow megakaryocytes, which store FBG in the α-granules, are thought not to express the FBG genes. Our earlier studies have shown that epithelial cells in a variety of extrahepatic tissues express the γ chain gene ubiquitously, while the mRNAs for the Aα and Bβ chain genes are essentially undetectable. During systemic inflammation, the liver secretes increased levels of FBG into the circul

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Guadiz, Gayle, Lee Ann Sporn, and Patricia J. Simpson-Haidaris. "Thrombin Cleavage-Independent Deposition of Fibrinogen in Extracellular Matrices." Blood 90, no. 7 (1997): 2644–53. http://dx.doi.org/10.1182/blood.v90.7.2644.

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Abstract Lung epithelial cells (A549) synthesize and secrete fibrinogen (FBG) in vitro when stimulated with interleukin-6 and dexamethasone. This FBG secretion is polarized in the basolateral direction, suggesting that FBG is a component of the extracellular matrix (ECM). Immunofluorescent staining of A549 cells showed a fibrillar pattern of FBG, similar to the staining detected using antibodies against the matrix constituents, collagen type IV and fibronectin (FN). The same pattern of staining was detected using antibodies against fibrinopeptides A and B, as well as with the T2G1 monoclonal a

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Guadiz, Gayle, Lee Ann Sporn, and Patricia J. Simpson-Haidaris. "Thrombin Cleavage-Independent Deposition of Fibrinogen in Extracellular Matrices." Blood 90, no. 7 (1997): 2644–53. http://dx.doi.org/10.1182/blood.v90.7.2644.2644_2644_2653.

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Lung epithelial cells (A549) synthesize and secrete fibrinogen (FBG) in vitro when stimulated with interleukin-6 and dexamethasone. This FBG secretion is polarized in the basolateral direction, suggesting that FBG is a component of the extracellular matrix (ECM). Immunofluorescent staining of A549 cells showed a fibrillar pattern of FBG, similar to the staining detected using antibodies against the matrix constituents, collagen type IV and fibronectin (FN). The same pattern of staining was detected using antibodies against fibrinopeptides A and B, as well as with the T2G1 monoclonal antibody a

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32

Zhou, Yu Jing, Gang Liu, Xue Qin Li, and Xiao Su Yi. "Effect of Thermal Residual Stress on FBG Sensors Embedded in Composite T-Stiffened Panels." Applied Mechanics and Materials 152-154 (January 2012): 1550–54. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.1550.

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The reflection spectrum from the Fiber Bragg Grating (FBG) sensors embedded in the composite was disturbed because of the thermal residual stress. In this study, two types of the FBG sensors, uncoated and UV-cured resin coated FBG sensors, were embedded in the triangle area of the T-stiffened composite panels. The strains during the curing process were measured by these two kinds of FBG sensors. Through the comparison of the results, it was found that the effect of thermal residual stress on the reflection spectrum could be attenuated when the FBG sensor was coated with UV-cured resin. Further

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Yamaji, Takayuki, Takahiro Harada, Yu Hashimoto, et al. "Pre-impaired fasting glucose state is a risk factor for endothelial dysfunction: Flow-mediated Dilation Japan (FMD-J) study." BMJ Open Diabetes Research & Care 8, no. 1 (2020): e001610. http://dx.doi.org/10.1136/bmjdrc-2020-001610.

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IntroductionDiabetes mellitus is associated with endothelial dysfunction. However, there is little information on the relationships of fasting blood glucose (FBG), including high normal blood glucose and impaired fasting glucose (IFG) with endothelial function. The purpose of this study was to evaluate the relationship between FBG level and flow-mediated vasodilation (FMD) using a large sample size.Research design and methodsThis study was a cross-sectional study. We measured FMD in 7265 subjects at 31 general hospitals. The subjects were divided into four groups based on FBG levels: <100,

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Naim, Nani Fadzlina, Nur Ainie Tasnim Muhamad Zulkifli, Latifah Sarah Supian, et al. "Design of High Performance Triangular Fiber Bragg Grating Temperature Sensor using OptiSystem and OptiGrating Software." Journal of Physics: Conference Series 2627, no. 1 (2023): 012001. http://dx.doi.org/10.1088/1742-6596/2627/1/012001.

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Abstract This paper presents on the design of high performance triangular Fiber Bragg Grating (FBG) as temperature sensor. This triangular FBG is designed and simulated using OptiGrating Software. The Triangular FBG design is exported to OptiSystem Software. In the OptiSystem software, the overall triangular FBG temperature sensor system is designed and simulated. It found that the triangular FBG has higher temperature sensitivity which is 37.5pm/°C than the standard FBG which is around 13pm/°C. It also has high linearity of 99.2% which specifies the consistency of wavelength shift as the temp

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Du, Cuicui, Deren Kong, and Chundong Xu. "Development of a Fault Detection Instrument for Fiber Bragg Grating Sensing System on Airplane." Micromachines 13, no. 6 (2022): 882. http://dx.doi.org/10.3390/mi13060882.

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This study develops a fault detection device for the fiber Bragg grating (FBG) sensing system and a fault detection method to realize the rapid detection of the FBG sensing system on airplanes. According to the distribution of FBG sensors on airplanes, the FBG sensing system is built based on wavelength division multiplexing (WDM) and space division multiplexing (SDM) technologies. Furthermore, the hardware and software of the fault detection device and the relevant FBG demodulator are studied in detail. Additionally, in view of the similar features of the healthy FBG sensor in the same measur

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Xu, Rui, Junhao You, Fang Li, and Bing Yan. "Postoperative Fasting Blood Glucose Predicts Prognosis in Stage I-III Colorectal Cancer Patients Undergoing Resection." Gastroenterology Research and Practice 2020 (January 8, 2020): 1–7. http://dx.doi.org/10.1155/2020/2482409.

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Purpose. The relationship between high blood glucose and colorectal cancer (CRC) has been studied, but the role of postoperative fasting blood glucose (FBG) in patients with a prior normal FBG has never been addressed. Methods. A total of 120 CRC patients staged I-III were enrolled, and the prognostic value of postoperative FBG for disease-free survival (DFS) was determined by Kaplan-Meier analysis. Univariate and multivariate analyses were conducted to test other clinicopathological parameters, including preoperative hemoglobin (HGB) and the neutrophil-lymphocyte ratio (NLR). Results. By a cu

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Li, Chengli, Jianguan Tang, Cheng Cheng, Longbao Cai, and Minghong Yang. "FBG Arrays for Quasi-Distributed Sensing: A Review." Photonic Sensors 11, no. 1 (2021): 91–108. http://dx.doi.org/10.1007/s13320-021-0615-8.

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AbstractFiber Bragg grating (FBG) array is a powerful technique for quasi-distributed sensing along the entire length of sensing fiber with fast response and high precision. It has been widely used for temperature, strain, and vibration monitoring. In this review work, an overview on the recent advances of FBG arrays is conducted. Firstly, the fabrication methods of FBG array are reviewed, which include femtosecond laser system and online writing technique. Then, the demodulation techniques for FBG arrays are presented and discussed. Distributed static sensing can be performed by demodulating

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Kang, Dong Hoon, Chang Sun Hong, and Chun Gon Kim. "Characteristics of Fiber Bragg Grating Sensors with Various Grating Lengths Embedded in Composite Materials." Key Engineering Materials 321-323 (October 2006): 152–55. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.152.

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Because of their good multiplexing capabilities, fiber Bragg grating (FBG) sensors are being studied more actively than any of other fiber optic sensors. The application fields of FBG sensors have been mainly focused on composite materials through embedding rather than through surface attachments. However, there are many limitations on the embedding of FBG sensors into composite materials because of the birefringence that is induced when FBG sensors are not embedded parallel to the reinforcing fibers. This study investigates the fabrication of FBG sensors that have various grating lengths, goo

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Li, Wei, Yong Jia Zhang, and Hong Qiao Wen. "A Multiple Fiber Grating Sensor System Using Code Division Multiple Access." Advanced Materials Research 765-767 (September 2013): 2444–47. http://dx.doi.org/10.4028/www.scientific.net/amr.765-767.2444.

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In order to increase the multiplying density of Fiber Bragg Grating (FBG) sensors, a novel FBG Sensing System based on CDMA technology has been developed. Simulation experiment indicates the CDMA technology combine with optical fiber grating sensing system together successfully. Furthermore, the system can distinguishes the FBG and enhance the FBG network band utilization.

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Cai, Jie, Hongda Chen, Ming Lu, et al. "Association between Temporal Glycemic Change and Risk of Pancreatic Cancer in Men: A Prospective Cohort Study." Cancers 14, no. 14 (2022): 3403. http://dx.doi.org/10.3390/cancers14143403.

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Hyperglycemia has been reported to increase the risk of pancreatic cancer (PC), while the association between glycemic change and PC risk has rarely been explored. Using data from a prospective cohort study conducted in China since 2006, 138,870 males with available fasting blood glucose (FBG) levels, including 106,632 males with at least two FBG measurements, were analyzed. The associations between FBG (level, change, and stability) and PC incidence were evaluated using Cox proportional hazard regression and restricted cubic splines. Baseline (p = 0.109) and recent (p = 0.070) FBG levels and

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Fadzlina Naim, Nani, Nur Shahira Anuar, Suzi Seroja Sarnin, and Norsuzila Yaa’cob. "Design of metal plate temperature sensor based on fiber bragg grating (FBG)." Indonesian Journal of Electrical Engineering and Computer Science 15, no. 3 (2019): 1282. http://dx.doi.org/10.11591/ijeecs.v15.i3.pp1282-1289.

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<p>This paper presents the design and characterization for metal plate temperature sensor based on Fiber Bragg Grating (FBG). Five types of FBGs were used such as Acrylate FBG, Bare FBG, Bimetallic Acrylate FBG, Bimetallic Bare FBG and Ceramic FBG to determine the sensitivity on four different plates at 23℃ to 70℃, experimentally. The four different plates are Aluminium, Aluminium Coating, Zinc and Zinc Coating has been used because of their excellent thermal conductivity. Two metals which are Copper and Zinc have been chosen to design the Bimetallic Strips FBG due to the Coefficient The

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Ramadhania, Zelika Mega, Dong Uk Yang, Moelyono Moektiwardojo, et al. "Enhanced Anti-Skin Aging Effects of Fermented Black Ginseng (Panax ginseng C.A. Meyer) by Aspergillus niger KHNT-1." Applied Sciences 13, no. 1 (2022): 550. http://dx.doi.org/10.3390/app13010550.

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Functional foods to prevent aging, particularly skin aging, have grown in popularity as society ages and science uncovers the pathological mechanisms of aging. In this study, we used processed ginseng, one of the famous functional foods, along with fermentation utilizing the novel Aspergillus niger strain KHNT-1 to enhance its value and efficacy. We successfully produced fermented black ginseng (FBG) and investigated its anti-skin aging properties, such as anti-melanogenic, anti-wrinkle, and antioxidant activities. The results showed that FBG at 100 μg/mL inhibited tyrosinase and melanin produ

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Huang, Xiao, Zhenkun Jin, and Qing Shen. "New Method of Temperature and Strain Decoupling Based on Directivity of Fiber Bragg Grating Sensing." Journal of Physics: Conference Series 2101, no. 1 (2021): 012023. http://dx.doi.org/10.1088/1742-6596/2101/1/012023.

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Abstract Fiber Bragg Grating (FBG) has been widely used in temperature and strain measurement. Its center wavelength drift is affected by both temperature and strain. The influence of temperature and strain on center wavelength should be decoupled when measuring. In this paper, the sensing characteristics of FBG which pasted at different angles were simulated and analyzed, and it was found that FBG sensing for strain has strong directivity. A dual FBG composite construction based on the directivity of FBG sensing was proposed. Two FBGs were at an Angle of 62°. One FBG was sensitive to both tem

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Gong, Hua Ping, Xiao Rui Li, Yong Xing Jin, and Xin Yong Dong. "Strain Performance of Fiber Bragg Grating Sensor Fixed by Different Adhesives." Advanced Materials Research 301-303 (July 2011): 415–20. http://dx.doi.org/10.4028/www.scientific.net/amr.301-303.415.

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The influence of fixing adhesives on strain performance of fiber Bragg grating (FBG) sensor was investigated. A FBG sensor was fixed on the uniform strength beam with three kinds of adhesives, which are modified acrylate, glass glue and epoxy resin. The linearity, sensitivity and their stability of FBG sensor fixed by three kinds of adhesives were measured and analyzed at the temperatures 0ºC-40ºC. The results show that, the FBG sensor fixed by the modified acrylate has a high linearity, sensitivity and stability at different temperatures. The FBG sensor fixed by the glass glue also has a high

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Drusová, Sandra, R. Martijn Wagterveld, Adam D. Wexler, and Herman L. Offerhaus. "Dynamic Consolidation Measurements in a Well Field Using Fiber Bragg Grating Sensors." Sensors 19, no. 20 (2019): 4403. http://dx.doi.org/10.3390/s19204403.

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Currently available groundwater flow prediction tools and methods are limited by insufficient spatial resolution of subsurface data and the unknown local heterogeneity. In this field study, fiber Bragg grating (FBG) sensors were installed in an extraction well field to investigate its potential to measure groundwater flow velocity. Reference in-situ pore pressure and temperature measurements were used to identify possible sources of FBG responses. FBG strain sensors were able to detect soil consolidation caused by groundwater extraction from 250 m distance. The results show that FBG responses

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Madsen, Tracy E., D. Leann Long, April P. Carson, et al. "Sex and Race Differences in the Risk of Ischemic Stroke Associated With Fasting Blood Glucose in REGARDS." Neurology 97, no. 7 (2021): e684-e694. http://dx.doi.org/10.1212/wnl.0000000000012296.

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ObjectiveTo investigate sex and race differences in the association between fasting blood glucose (FBG) and risk of ischemic stroke (IS).MethodsThis prospective longitudinal cohort study included adults age ≥45 years at baseline in the Reasons for Geographic And Racial Differences in Stroke Study, followed for a median of 11.4 years. The exposure was baseline FBG (mg/dL); suspected IS events were ascertained by phone every 6 months and were physician-adjudicated. Cox proportional hazards were used to assess the adjusted sex/race-specific associations between FBG (by category and as a restricte

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Simpson-Haidaris, Patricia J., Mary-Anne Courtney, Terry W. Wright, Rachel Goss, Allen Harmsen, and Francis Gigliotti. "Induction of Fibrinogen Expression in the Lung Epithelium during Pneumocystis carinii Pneumonia." Infection and Immunity 66, no. 9 (1998): 4431–39. http://dx.doi.org/10.1128/iai.66.9.4431-4439.1998.

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ABSTRACT Pneumocystis carinii is an important pulmonary pathogen responsible for morbidity and mortality in patients with AIDS. The acute-phase response (APR), the primary mechanism used by the body to restore homeostasis following infection, is characterized by increased levels of circulating fibrinogen (FBG). Although the liver is the primary site of increased FBG synthesis during the APR, we unexpectedly discovered that FBG is synthesized and secreted by lung alveolar epithelial cells in vitro during an inflammatory stimulus. Therefore, we sought to determine whether lung epithelial cells p

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Wachtarczyk, Karol, Marcel Bender, Ewald Fauster, Ralf Schledjewski, Paweł Gąsior, and Jerzy Kaleta. "Gel Point Determination in Resin Transfer Molding Process with Fiber Bragg Grating Inscribed in Side-Hole Elliptical Core Optical Fiber." Materials 15, no. 18 (2022): 6497. http://dx.doi.org/10.3390/ma15186497.

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Material as well as process variations in the composites industry are reasons to develop methods for in-line monitoring, which would increase reproducibility of the manufacturing process and the final composite products. Fiber Bragg Gratings (FBGs) have shown to be useful for monitoring liquid-composite molding processes, e.g., in terms of online gel point detection. Existing works however, focus on in-plane strain measurements while out-of-plane residual strain prevails. In order to measure out-of-plane strain, FBG inscribed in highly birefringent fiber (HB FBG) can be used. The purpose of th

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Sharma, Er Abhishek, Er Sukhbir Singh, Er Rajeev Thakur, and Er Bhubneshwar Sharma. "Comparison of dispersion compensation with Fiber Braggs Grating at Transmitter and Receiver end of a single channel optical communication system." INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 8, no. 2 (2013): 837–44. http://dx.doi.org/10.24297/ijct.v8i2.3395.

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Optical fibers are used to transmit the light signal in optical communication system. When the light pulses propagates down the fiber, the pulses spreading takes place, and this phenomenon is called Pulse Dispersion. Dispersion is the main factor which affects the performance of fiber in optical fiber communication system. Dispersion can be compensated by many ways. Dispersion compensation by FBG (fiber bragg grating) is studied in this paper. Dispersion compensation by FBG along EDFA plays a very important role in dispersion compensation. When FBG is used after EDFAÂ at transmitter side (befo

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Xu, Cheng, and Zahra Sharif Khodaei. "A Novel Fabry-Pérot Optical Sensor for Guided Wave Signal Acquisition." Sensors 20, no. 6 (2020): 1728. http://dx.doi.org/10.3390/s20061728.

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In this paper, a novel hybrid damage detection system is proposed, which utilizes piezoelectric actuators for guided wave excitation and a new fibre optic (FO) sensor based on Fabry-Perot (FP) and Fiber Bragg Grating (FBG). By replacing the FBG sensors with FBG-based FP sensors in the hybrid damage detection system, a higher strain resolution is achieved, which results in higher damage sensitivity and higher reliability in diagnosis. To develop the novel sensor, optimum parameters such as reflectivity, a wavelength spectrum, and a sensor length were chosen carefully through an analytical model

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