A temperature controlled 1 Ω and 10 kΩ standard resistors setup has been developed at National Institute of Metrological Research, (INRIM), to transfer the traceability to high accuracy multifunction electrical instruments used in Secondary calibration laboratories. These two standards are formed respectively by ten in parallel connected 10 Ω and 100 kΩ resistors inserted into a temperature con...

in the present study, variation among different bacterial strains was observed in the plaques of tobacco chewers (tc) as compared to those from normal persons (non tobacco chewers) (ntc). bacterial strain j1 (dominant in the plaques of ntc) did not initiate the process of adhesion (biofilm formation) until it appeared to have reached a required population density necessary for the production of...

The thermal noise of the resistive vee dipole (RVD) has been analyzed using a numerical model based on the method of moments. The RVD analyzed in this paper has curved arms and is loaded with surface-mount chip resistors, which approximate a modified Wu-King profile. The total noise power delivered to a 200Ω feed line and the contribution of individual resistors to the total noise power are pre...

To prevent the dramatic degradation of the device performance of SiGe power heterojunction bipolar transistors (HBTs) and maintain the power efficiency, emitter-ballast resistors and base-ballast resistors have been employed in high power bipolar transistors. The microwave performance of emitter-ballast and base-ballast HBTs has been compared and discussed empirically in the previous work. Howe...

We investigated the impact of mindfulness training (MT) on attentional performance lapses associated with task-unrelated thought (i.e., mind wandering). Periods of persistent and intensive demands may compromise attention and increase off-task thinking. Here, we investigated if MT may mitigate these deleterious effects and promote cognitive resilience in military cohorts enduring a high-demand ...

Cardiovascular disease (CVD) biomarkers of biological effect (BoBE), including hematologic biomarkers, serum lipid-related biomarkers, other serum BoBE, and one physiological biomarker, were evaluated in adult cigarette smokers (SMK), smokeless tobacco consumers (STC), and non-consumers of tobacco (NTC). Data from adult males and females in the US National Health and Nutrition Examination Surve...

Coaxial straight-wire resistors have been constructed with the purpose of improving comparisons between resistors, capacitors, and inductors in the audio frequency range. The design is based on the principle that a coaxial line with a cylindrical shield can be described by relatively simple equationsfor the real and imaginary parts of the impedance. The resistors, with values above 100 n, will ...

An approach for thermal simulation and reliability evaluation of MCM film resistors is described. Result can be used to reach an optimal solution based on available data, technology, topology and material parameters. To achieve a high reliability level and performance of the resistors, the board must be designed taking into account the thermal consideration for each component. Result of thermal...

Splicing of precursor messenger RNA (pre-mRNA) in yeast is executed by the spliceosome, which consists of five small nuclear ribonucleoproteins (snRNPs), NTC (nineteen complex), NTC-related proteins (NTR), and a number of associated enzymes and cofactors. Here, we report the three-dimensional structure of a Schizosaccharomyces pombe spliceosome at 3.6-angstrom resolution, revealed by means of s...

Pre-mRNA splicing is an essential step in gene expression that removes intron sequences efficiently and accurately to produce a mature mRNA for translation. It is the large and dynamic RNA-protein complex called the spliceosome that catalyzes intron removal. To carry out splicing the spliceosome not only needs to assemble correctly with the pre-mRNA but the spliceosome requires extensive remode...