There is a lack of efficient methods for ultrasonic nondestructive quantitative evaluation of porosity in resistance spot welding, and the precise location of porosity in a nugget can be
Abundance of tigecycline resistance genes and association Herein, real-time quantitative PCR was used to detect the abundance of seven tigecycline resistance genes (TRGs), including six tet(X) variants and tmexCD1-toprJ1, and insertion sequences ISCR2 and IS26. Then, the concentrations of nine antibiotics were quantified in fecal samples collected from 157 livestock farms in four Chinese provinces.
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Evaluation of a rapid, quantitative - Wiley Online LibraryEvaluation of a rapid, quantitative assay for serum resistance in Escherichia coli Angela M. Nilius Department of Microbiology, University of Illinois, 131 Burrill Hall,
The Progressive Diagnostics Manufacturers epsilometer test (E test; AB Biodisk, Solna, Sweden), a quantitative variant of the disk diffusion technique, was evaluated comparatively to an agar dilution method for the antimicrobial susceptibility testing of Helicobacter pylori. A collection of 79 H. pylori clinical strains, including isolates with known resistance to various antimicrobial agents
Figure 3 from Expulsion prediction in resistance spot An expulsion model has been developed for resistance spot welding, based on consideration of the interaction between mechanical and metallurgical processes during welding. An expulsion criterion is proposed by comparing the electrode force with that from the liquid nugget:expulsion occurs when the latter exceeds the former.
Fit Testing Center for Respiratory Protection A quantitative fit test (QNFT) can be used to fit-test any tight-fitting respirator. It involves using an instrument to measure leakage around the face seal and produces a numerical result called a fit factor. Air will take the path of least resistance, so if the seal isnt there, the
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In-situ ultrasonic detection of resistance spot welding May 01, 2019 · A quantitative ultrasonic evaluation method is established to calculate the nugget diameter and thickness. The relative errors between measured values and actual values are all less than 7%. (3) The RSW quality can be classified as good weld, over-burning weld, loose weld, thin-nugget weld, small-nugget weld, and internal-defect weld.
Quantitative Evaluation of the Cutting Quality and Abrasive Resistance of Sealers 500, and 300 dyne) and sealer angles (70° to 95°) on the cutting quality and abrasive resistance of sealers were evaluated quantitatively by the amount of the abraded material worn away in 1,000 strokes. Comparison of the 3 scaling forces showed a greater
Quantitative evaluation of shunts - Wiley Online LibraryQuantitative evaluation of shunts in solar cells by lockin thermography. O. Breitenstein. Corresponding Author. E-mail address:[email protected] Max Planck Institute of Microstructure Physics, Weinberg 2, D06120 Halle, Germany.
Quantitative evaluation of the - Wiley Online LibraryJul 25, 2019 · Quantitative evaluation of the intratumoral distribution of platinum in oxaliplatintreated rectal cancer: is a key chemotherapeutic agent for colorectal cancer (CRC), but drug resistance and toxic effects have been major limitations of its use. Synchrotron radiation Xray fluorescence spectrometry (SRXRF) is a rapid, nondestructive
Thus, the resistance to oil expulsion can be overcome by exceeding the sorption threshold and can be approximately defined as OSI 100 mg HC per g of TOC. Additionally, all our samples had an OSI greater than 100 mg HC per g of TOC ( Figure 7 ) according to our identification of source rocks based on the mass balance approach (Q r Q rm ).
Statistical modeling and optimization of the resistance Xia YJ, Su ZW, Li YB, Zhou L, Shen Y (2019) Online quantitative evaluation of expulsion in resistance spot welding. J Manuf Process 46:3443 Article Google ScholarExpulsion Intensity Monitoring and Modeling in Resistance In order to control and eventually eliminate weld expulsion in production, accurate assessment of the expulsion severity should be the first step and is urgently required. Among the existing methods, real-time monitoring of RSW-related process signals has become a promising approach to actualize the online evaluation of weld expulsion.