Abstract: Structural health monitoring (SHM) provides a useful tool for ensuring safety and detecting the evolution of damage performance deterioration civil infrastructures. A great number infrastructures under construction can be used as test beds SHM systems. The Binzhou Yellow River Highway Bridge is cable-stayed bridge in Shandong Province, China. An system has been implemented on this during its status assessing long-term services. includes sensor module, data acquisition wired...

BACKGROUND The aim of this study was to design and test a novel composite scaffold with antibacterial efficacy for treating bone infections using three-dimensional (3D) printed poly(ε-caprolactone) (PCL) coated polydopamine (PDA) the adsorption polylactic acid-glycolic acid (PLGA) microspheres loaded vancomycin. MATERIAL AND METHODS Vancomycin-loaded PLGA were produced by double-emulsion method, microsphere morphology, drug-loading dosage, encapsulation efficiency, average diameter, release...

A three-layer packaged structure is proposed for an extrinsic Fabry–Perot interferometer-based optical fiber sensor in order to produce high resolution large strains. The resolutions of three data processing algorithms including interference frequency tracking, period tracking and phase are investigated compared. Laboratory tests indicate that the can measure a strain up ±120 000 µε (±12%) with as 10 µε. prototype insensitive misalignment, enabling study progressive structural failures...

We proposed and designed a high-sensitivity fiber-optic photoacoustic gas analyzer based on resonant Herriott multipass cell (MPC) cantilever acoustic sensor, which realized the double enhancement of excitation detection signal. The chamber volume miniature was 157 mL. laser reflected 20 times reached an optical path length 4 m in PA cell, achieving conducted comparative experiment between Herriott-MPC single-pass results showed that <inline-formula...

Pavements always play a predominant role in transportation. Health monitoring of pavements is becoming more and significant, as frequently suffering from cracks, rutting, slippage renders them prematurely out service. Effective reliable sensing elements are thus high demand to make prognosis on the mechanical properties occurrence damage pavements. Therefore, this paper, various types functionality enhancement industrialized optical fiber sensors for pavement developed, with corresponding...

A novel fiber-optic phase-sensitive optical time-domain reflectometer (Φ-OTDR) distributed sensing system is proposed and demonstrated for long-distance intrusion monitoring. By using the bi-directional Raman amplification technology, even signal detection along whole distance of ~62km has been demonstrated, resulting in longest most sensitive Φ -OTDR reported so far, to best our knowledge. In addition, high-power single-mode fiber laser with ultra-narrow line-width special cable...

Optical fiber Bragg grating (FBG) has been recognized as an outstanding high-performance local monitoring sensor and is largely applied in structural health (SHM). This paper proposes a series of fiber-reinforced polymer- (FRP-) packaged optical strain sensors to completely meet the requirements rough civil engineering infrastructures, their sensing performance under normal environment harsh experimentally investigated. It theoretically proved that FRP-packaged FBG maintain excellent bare...

The development of new building materials is a crucial engine for promoting the green energy efficient buildings. In this paper, based on excellent properties light guiding resin materials, type translucent mortar‐based concrete (RTMC) was researched; meanwhile, transmittance properties, mechanical and thermal performance were studied, respectively. results showed that material possessed within thickness 100 mm, which can be as high 93%. Moreover, when area ratio 5%, compressive strength...

Buildings consume large amounts of energy, and lighting consumes a substantial amount this energy. Therefore, an alternative technology that depends more on natural is needed in order to reduce the building energy consumption. In paper, based excellent properties light guiding elasto-optic effect optical fibre, novel transparent concrete with plastic fibres (POFs) arranged into was developed evaluated. The transmitting performance fibre product (PTCP) tested by power method. ZEMAX software...

FBG strain sensors are more and accepted in the area of structural health monitoring, especially civil infrastructures. However, due to fact that senses both temperature simultaneously. And moreover wavelength shift induced by 1°C is almost equivalent 10με. So compensation for long-term monitoring indispensable. In this paper, based on FBG's sensing principles, techniques dual FBGs environmental brought forward. The experiment cement paste curing monitroed was carried out. advantage...

Brillouin optical time-domain reflectometry (BOTDR) and analysis (BOTDA) are considered to be promising practical sensing techniques for large structures. However, there is still a major obstacle applying BOTDR or BOTDA on large-scales; the high cost unreliability associated with sensor installation failure. We report novel, low-cost, highly reliable BOTD using rebar consisting of bare fiber (OF) packaged in fiber-reinforced polymer (FRP) named BOTD-FRP-OF. investigate surface bonding its...

Energy saving and safety evaluation are two key issues for infrastructure. In this paper, the development of a novel smart transparent concrete using plastic optical fiber (POF) Fiber Bragg Grating (FBG) is discussed, along with its sensing properties. The experimental results show that an can be easily combined POF could provide steady light transmitting ratio. Moreover, FBG used as element strain temperature. This paper also discusses mechanical effects introducing into specimens. Because...

Long non-coding RNAs (lncRNAs) are a class of endogenous longer than 200 bp that play crucial roles in cancer biology. Here, we assessed the tumorigenic properties long noncoding RNA, MIAT, non-small cell lung (NSCLC).Survival and clinicopathological analyses were done cohort 80 patients with NSCLC. MIAT expression level determined by real-time quantitative reverse transcriptase PCR (qRT-PCR). Dual luciferase reporter assays employed to test interaction between miR-149-5p. Ectopic...

From the viewpoint of BDS bridge displacement monitoring, which is easily affected by background noise and calculation a fixed threshold value in wavelet filtering algorithm, often related to data length. In this paper, processing method Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (CEEMDAN), combined adaptive de-noising proposed. The composed mean variance coefficients each layer used de-noise monitoring data. CEEMDAN was decompose response obtain intrinsic mode...

This paper proposes an optical fiber Bragg grating (FBG) sensing system for scour monitoring around the foundations of bridge piers and abutments. The new introduces a uniform-strength fiber-reinforced polymer (FRP) beam that is instrumented with two FBG sensors in sides its neutral axis. tensile compressive strains are measured under hydrodynamic pressure as water flowing foundations. By assuming equal temperatures beam, difference wavelength variations embedded was found to be proportional...

The test precision optical fibre sensors are increasingly important due to the widespread application of sensing technology in structural health monitoring. Strain transfer analysis, which can be used determine action mechanism and improve these sensors, is therefore an issue. earliest research started 1990s, many excellent achievements have been obtained based on traditional elastic theory stress analysis composites. A variety strain deductions appear describe differences mechanical models,...