Development of Model Test System for Grouting Simulation in Flowing Water and Study of the Diffusion Form of Anti-Dispersion Grout

2011 ◽  
Vol 90-93 ◽  
pp. 208-212 ◽  
Author(s):  
Yao Xu ◽  
Shu Cai Li ◽  
Xiao Zhang
Keyword(s):  
Drainage System ◽  
High Sensitivity ◽  
Test System ◽  
System Control ◽  
Flowing Water ◽  
Test Bed ◽  
Fracture Grouting ◽  
Fbg Sensors ◽  
System Water ◽  
Diffusion Form

In order to simulate the diffusion form of anti-dispersion grout, the first visual large-proportion plane fissure test system for the physical model of fracture-grouting in flowing water is developed in China. The plane fissure test system is made up of plane fissure test-bed, monitoring system, water supply and drainage system, grouting system, control system and data acquisition system. The fiber Bragg grating (FBG) sensors for pressure, velocity and temperature monitoring are employed because of its small size and high sensitivity. The U-shaped diffusion form of anti-dispersion grout is found by the plane fissure grouting test in the flowing water.

scholarly journals Clinical Value of Multiplexed Bead-Based Immunoassays for Detection of Autoantibodies to Nuclear Antigens

2007 ◽  
Vol 14 (5) ◽  
pp. 505-509 ◽  
Author(s):  
Erik Avaniss-Aghajani ◽  
Sophia Berzon ◽  
Arlen Sarkissian
Keyword(s):  
Lupus Erythematosus ◽  
Fluorescent Antibody ◽  
False Positive Rate ◽  
High Sensitivity ◽  
Test System ◽  
Lower Percentage ◽  
Clinical Value ◽  
Specificity And Sensitivity ◽  
Relative Specificity ◽  
Positive Results

ABSTRACT The advent of multiplexed bead assays in recent years has introduced a new dimension of testing for complex diseases such as lupus, which can involve multiple autoantibodies. The ability to rapidly identify multiple autoantibodies, with high sensitivity and specificity in an automated fashion, is highly attractive. The aim of this study was to assess the performance and clinical value of multiplexed bead-based (AtheNA Multi-Lyte ANA-II test system) immunoassays both by comparing the results with those achieved by indirect fluorescent-antibody assay (IFA) or conventional enzyme immunoassays (EIAs) and by independent identification of autoantibodies in well-characterized samples. To achieve this goal, 984 samples were tested for seven analytes (SS/A, SS/B, Sm, RNP, Scl-70, double-stranded DNA [dsDNA], and centromere B) in both traditional and bead-based assays. The average concordance for the different analytes was 91%, ranging from 81% (dsDNA) to 97% (centromere B). The average relative specificity and sensitivity for the analytes were also high, 92% and 81%, respectively. An examination of 93 “normal controls” demonstrated a 7% false-positive rate, which was comparable to IFA. Percentages of different autoantibodies found in patients with a variety of disease conditions (34 with calcinosis, Raynaud's phenomenon, esophageal dysmotility, sclerodactyly, and telangiectasia; 41 with mixed connective tissue disease; 24 with scleroderma; and 35 with Sjogren's syndrome) were well within the range expected from each group. A scrutiny of results from AtheNA and EIA and Farr results for 185 systemic lupus erythematosus samples revealed comparable results by both methods, with the exception of SS/A and dsDNA, where AtheNA had a higher percentage of SS/A-positive results compared to EIA (51% versus 29%) and a lower percentage of dsDNA-positive results (18% versus 28% at a cutoff of 5 IU/ml).

scholarly journals Preliminary results of tritium analyses in basal ice, Matanuska Glacier, Alaska, U.S.A.: evidence for subglacial ice accretion

1996 ◽  
Vol 22 ◽  
pp. 126-133 ◽  
Author(s):  
Jeffrey C. Strasser ◽  
Daniel E. Lawson ◽  
Grahame J. Larson ◽  
Edward B. Evenson ◽  
Richard B. Alley
Keyword(s):  
Drainage System ◽  
Supercooled Water ◽  
Ice Formation ◽  
Flowing Water ◽  
Ice Accretion ◽  
Preliminary Results ◽  
Basal Ice ◽  
Basal Zone ◽  
Matanuska Glacier ◽  
Initial Results

The stratified-facies ice of the basal zone of Matanuska Glacier, Alaska. U.S.A., contains significant concentrations of anthropogenic tritium, whereas unaltered englacial-zone ice is devoid of tritium. Supercooled water flowing through subglacial conduits during the melt season likewise contains tritium, as does frazil and other platy ice that nucleates and grows within this subglacially flowing water. These initial results demonstrate net accretion of more than 1.4 m of stratified basal-zone ice since initiation of above-ground, thermonuclear bomb testing in 1952. Furthermore, these results support a theory of basal ice formation by ice accretion and debris entrainment from supercooled water within a distributed subglacial drainage system.

A Comprehensive Test System for Precision Transmission Performance of CORT Reducer

2013 ◽  
Vol 333-335 ◽  
pp. 2448-2451
Author(s):  
Yong Li ◽  
Guang Ma ◽  
Yun De Shen ◽  
Tai Hong Cheng ◽  
Zhen Zhe Li ◽  
...  
Keyword(s):  
Performance Test ◽  
Velocity Ratio ◽  
Test System ◽  
Test Method ◽  
Transmission Performance ◽  
Test Bed ◽  
Comprehensive Test ◽  
Return Difference ◽  
And Control ◽  
Torque Angle

To meet the needs of test for compound oscillatory roller transmission (CORT) reducer, A comprehensive test system for precision transmission performance was designed, the test-bed structure and control principal of which were introduced. First, a transmission performance test method was proposed and focused on the transmission performance of velocity ratio, accuracy, and efficiency. Then, user interface based on LabVIEW program was designed, and the transmission performance of torque, angle, velocity, velocity ratio, return difference, efficiency could be displayed. Finally, measurement example on an E80 type CORT reducer has been made, and shows that the proposed test system is suitable for test for these reducers of high-precision drive, high stiffness, high load characteristics.

scholarly journals Laboratory Test Bed for Analyzing Fault-Detection Reaction Times of Protection Relays in Different Substation Topologies

Energies ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 2482 ◽  
Author(s):  
Goran Jurišić ◽  
Juraj Havelka ◽  
Tomislav Capuder ◽  
Stjepan Sučić
Keyword(s):  
Distribution System ◽  
Information Exchange ◽  
Transition Period ◽  
Reaction Times ◽  
Energy Transition ◽  
Test System ◽  
Protection System ◽  
International Electrotechnical Commission ◽  
Test Bed ◽  
Iec 61850

Visions of energy transition focus on activating end users, meaning that numerous flexible-distribution network-level devices become active participants in power-system operations. This implies a fast, reliable, and secure exchange of data, enabling the distribution-system operators to maintain, or even improve, the quality and delivery of service. With the introduction of the International Electrotechnical Commission (IEC) 61850 standard, the path is set for a single communication topology covering all substation levels. The standard has the potential to change the way substations are designed, built, tested, and maintained. This means that the key segment of the substation, its protection system, will go through a transition period with the end goal of having a digitized substation where all information exchange is performed over an Ethernet communication bus. This paper analyzes the performance impact of the IEC 61850-9-2LE on the protection system. To do this, a laboratory hardware-in-the-loop test setup was developed representing traditional-, hybrid-, and digital-substation topology. The setup serves to simulate faults and create transient waveforms in an extended IEEE 123-node test system, which is then used to detect the reaction times of protection relay devices. To verify the results, a significant number of tests was performed clearly showing the benefits of digitalizing the distribution system.

scholarly journals ThE uSE of AbErrAnT METhylATEd gEnES SEPT9 And VIM for clInIcAl dIAgnoSIS of colorEcTAl cAncEr

2016 ◽  
Vol 7 (4) ◽  
pp. 15-20
Author(s):  
O I Brovkina ◽  
M G Gordiev ◽  
D S Khodyrev ◽  
A G Nikitin ◽  
A V Averyanov
Keyword(s):  
Colorectal Cancer ◽  
High Sensitivity ◽  
Test System ◽  
Aberrant Methylation ◽  
Adjacent Tissue ◽  
Epigenetic Events ◽  
Combined Use ◽  
Ras Family ◽  
Definition Of ◽  
Tumor Dna

Definition of epigenetic disorders is important for early diagnosis of colorectal cancer. To obtain a model of diagnostic test system with high sensitivity and specificity, we determined the frequency of methylation in SEPT9 and VIM genes. Epigenetic events also were compared with mutations in the RAS family genes. It was confirmed the presence of aberrant methylation in SEPT9 and VIM genes in tumor cells. DNA of tumor samples was significantly more methylated than samples with DNA from adjacent tissue (P = 8,67E-19 for SEPT9 gene and P=8,68E-19 for VIM gene). In the group of patients carried mutations in KRAS or NRAS genes tumor DNA significantly more methylated in gene SEPT9 (P = 0.0018), in contrast to the tumor DNA from patients not carried mutations. We have demonstrated that the combined use of methylation markers can improve the sensitivity of the test systems used in the diagnostics of colon cancer.

scholarly journals Multifunctional Textile Platform for Fiber Optic Wearable Temperature-Monitoring Application

Micromachines ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 866 ◽  
Author(s):  
Ziyang Xiang ◽  
Liuwei Wan ◽  
Zidan Gong ◽  
Zhuxin Zhou ◽  
Zhengyi Ma ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Temperature Sensor ◽  
High Sensitivity ◽  
Wavelength Shift ◽  
Heat Sources ◽  
Time Dynamic ◽  
Textile Sensor ◽  
Fbg Sensors ◽  
Comfort Parameters ◽  
Monitoring Application

Wearable sensing technologies have been developed rapidly in the last decades for physiological and biomechanical signal monitoring. Much attention has been paid to functions of wearable applications, but comfort parameters have been overlooked. This research presents a developed fabric temperature sensor by adopting fiber Bragg grating (FBG) sensors and processing via a textile platform. This FBG-based quasi-distributed sensing system demonstrated a sensitivity of 10.61 ± 0.08 pm/°C with high stability in various temperature environments. No obvious wavelength shift occurred under the curvatures varying from 0 to 50.48 m−1 and in different integration methods with textiles. The temperature distribution monitored by the developed textile sensor in a complex environment with multiple heat sources was deduced using MATLAB to present a real-time dynamic temperature distribution in the wearing environment. This novel fabric temperature sensor shows high sensitivity, stability, and usability with comfort textile properties that are of great potential in wearable applications.

Optimal Power Flow Problem Solution Based on Hybrid Firefly Krill Herd Method

2019 ◽  
Vol 44 ◽  
pp. 213-228 ◽  
Author(s):  
Aboubakr Khelifi ◽  
Bachir Bentouati ◽  
Saliha Chettih
Keyword(s):  
Light Intensity ◽  
Power Flow ◽  
Optimal Power Flow ◽  
Optimization Problems ◽  
Test System ◽  
Optimization Techniques ◽  
System Control ◽  
Problem Solution ◽  
Optimal Power ◽  
Krill Herd

Optimal Power Flow (OPF) problem is one of the most important and widely studied nonlinear optimization problems in power system operation. This study presents the implementation of a new technology based on the hybrid Firefly and krill herd method (FKH), which has been provided and used for OPF problems in power systems. In FKH, an improved formulation of the attractiveness and adjustment of light intensity operator initially employed in FA, named attractiveness and light intensity the update operator (ALIU), is inserted into the KH approach as a local search perform. The FKH is prove with the solving of the OPF problem for various types of single-objective and multi-objective functions such as generation cost, reduced emission, active power losses and voltage deviation which are optimized simultaneously on exam system, viz the IEEE-30 Bus test system, which is used to test and confirm the efficiency of the proposed FKH technique. By comparing with several optimization techniques, the results produced by using the recommended FKH technique are provided in detail. The results obtained in this study appear that the FKH technique can be efficiency used to solve the non-linear and non-convex problems and high performance compared with other optimization methods in the literature. This study can achieve a minimum objective by finding the optimum setting for system control variables.

scholarly journals Preliminary results of tritium analyses in basal ice, Matanuska Glacier, Alaska, U.S.A.: evidence for subglacial ice accretion

1996 ◽  
Vol 22 ◽  
pp. 126-133 ◽  
Author(s):  
Jeffrey C. Strasser ◽  
Daniel E. Lawson ◽  
Grahame J. Larson ◽  
Edward B. Evenson ◽  
Richard B. Alley
Keyword(s):  
Drainage System ◽  
Supercooled Water ◽  
Ice Formation ◽  
Flowing Water ◽  
Ice Accretion ◽  
Preliminary Results ◽  
Basal Ice ◽  
Basal Zone ◽  
Matanuska Glacier ◽  
Initial Results

The stratified-facies ice of the basal zone of Matanuska Glacier, Alaska. U.S.A., contains significant concentrations of anthropogenic tritium, whereas unaltered englacial-zone ice is devoid of tritium. Supercooled water flowing through subglacial conduits during the melt season likewise contains tritium, as does frazil and other platy ice that nucleates and grows within this subglacially flowing water. These initial results demonstrate net accretion of more than 1.4 m of stratified basal-zone ice since initiation of above-ground, thermonuclear bomb testing in 1952. Furthermore, these results support a theory of basal ice formation by ice accretion and debris entrainment from supercooled water within a distributed subglacial drainage system.

Research on the Water-Based Hydraulic Vibration Test-Bed

2014 ◽  
Vol 1016 ◽  
pp. 204-208
Author(s):  
Qian Liu ◽  
Yuan Xun Liu ◽  
Cong Yang ◽  
Xiao Lin Li
Keyword(s):  
Test System ◽  
Vibration Test ◽  
Test Bed ◽  
Matlab Software ◽  
Water Based ◽  
Working Principle ◽  
Water Hydraulic ◽  
And Function

In this paper, the application background and function of vibration test is introduced. Besides, the composition and working principle of vibration test system is also introduced simply. Furthermore, the characteristic of water and oil is compared with each other in the paper. It is discussed if the water hydraulic is able to be used in the hydraulic vibration test-bed or not. The capability of hydraulic vibration test-bed based on water is simulated by Matlab software. The feasibility of this project is also analyzed.

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