This article discusses the advantages of using a substitution measurement topology in place of the conventional common-current series connection arrangement employed in bridges or potentiometric resistance instruments working at the highest (sub ppm) accuracies. Most high accuracy resistance instruments pass a common AC or DC current through the device-under-test (DUT) and a reference standard ...

In a swept-wavelength measurement system, the wavelength of a tunable laser source (TLS) is swept continuously at a constant rate throughout the desired tuning range, while the device under test (DUT) is monitored simultaneously for its wavelength-dependent optical properties. Given an ideal continuously tunable laser – one that does not exhibit any discontinuities in wavelength, or sudden chan...

objectives: skeletal-muscular disorders affect the biomechanics of the human body, especially the lower extremity, with a negative effect on the biomechanics of exercise. the main aim of this study was to evaluate the effect of fatigue on the kinematic variables of knee joints during countermovement jumps in female students of physical education with valgus knee deformity.  methods: fifteen sub...

Strains of Escherichia coli with a mutation in the sof (dnaS) locus show a higher than normal frequency of recombination (are hyper rec) and incorporate label into short (4-5S) DNA fragments following brief [3H]thymidine pulses [Konrad and Lehman, Proc. Natl. Acad. Sci. USA 72, 2150 (1975)]. These mutant strains have now been found to be defective in deoxyuridinetriphosphate diphosphohydrolase ...

The dut gene of Escherichia coli encodes deoxyuridine triphosphatase, an enzyme that prevents the incorporation of dUTP into DNA and that is needed in the de novo biosynthesis of thymidylate. We produced a conditionally lethal dut(Ts) mutation and isolated a phenotypic revertant that had a mutation in an unknown gene tentatively designated dus (for dut suppressor). The dus mutation restored the...

DisplayPort 1.4 and Type-C Compliance/Debug solution key features Complete automated compliance testing in less than 7 hours for data rates up to HBR2 and less than 11 hours for data rates up to HBR3 Intelligent pattern recognition before test execution Fixture de-embed feature → Use the default filter file for de-embedding fixture effect or create a custom filter file using SDLA software to le...

Bacteriophage T5 induces a deoxyuridine B’-triphosphate nucleotidohydrolase (dUTPase) activity during infection of Escherichiu coli. A T5 mutant (T5 dut) unable to induce this dUTPase activity has been isolated. Although this mutant is viable, the E. coli dUTPase activity is not sufficiently active to exclude uracil from the progeny DNA and about 3% of the thymine is replaced by uracil. When th...

Despite general agreement on the effects of knee valgus and internal tibial rotation on anterior cruciate ligament (ACL) loading, compelling debate persists on the interrelationship between these rotations and how they contribute to the multi-planar ACL injury mechanism. This study investigates coupling between knee valgus and internal tibial rotation and their effects on ACL strain as a quanti...

Valgus moments on the knee joint during single-leg landing have been suggested as a risk factor for anterior cruciate ligament (ACL) injury. The purpose of this study was to test the influence of isolated valgus moment on ACL strain during single-leg landing. Physiologic levels of valgus moments from an in vivo study of single-leg landing were applied to a three-dimensional dynamic knee model, ...