Paper presents a study about dynamic effects obtained from the dynamic load testing of the city highway bridges in Latvia carried out from 2005 to 2012. 9 prestressed concrete bridges and 4 composite bridges were considered. 11 of 13 bridges were designed according to the Eurocodes but two according to the previous structural codes used in Latvia (SNIP 2.05.03-84). The dynamic properties of the...

Glioblastoma (GBM), the most common malignant brain tumor in adults, contains a subpopulation of cells with a stem-like phenotype (GS-cells). GS-cells can be maintained in vitro using serum-free medium supplemented with epidermal growth factor, basic fibroblast growth factor-2, and heparin. However, this method does not conserve amplification of the Epidermal Growth Factor Receptor (EGFR) gene,...

Millions of financial losses and thousands of people which die are due to earthquakes that happen every now and then in all corners of the world. Safety against the hazards of earthquake relates to two basic factors: safety of the structure and site. Site's conditions play an important role in damages of structures. This factor has a geotechnical cause and could be appeared as seismic wave ampl...

A method is described for measuring the local drag coefficient on a long cylinder which exhibits vortex-induced vibration (VIV). Results are shown from a field experiment in which a long flexible pipe was instrumented with two-hundred and eighty fiber optic strain gauges. The measured local drag coefficients are compared to a commonly used drag coefficient prediction formula. The formula is sho...

We search for an amplification mechanism of the seed cosmic magnetic induction by studying a new version of the Dirac’s æther in a curved cosmological background. We find that an amplification takes place if the scale factor R(t) varies with the cosmic time, which brings to the magnetic field the effect of a geometric amplification. ∗ e-mail: marcelo [email protected] † internet: [email protected]...

We study a possible amplification mechanism for the curvature perturbations generated during inflation by Dirac-Born-Infeld (DBI) inflaton in presence of sharp feature warp factor. The large growth resulting scalar power spectrum is consequence decreasing speed sound. obtain analytical approximate expressions relevant dynamical quantities both slow roll phase and transient which leads to amplif...

The cyclin D1 (CCND1) gene is amplified, rearranged, and overexpressed frequently in human cancer, including squamous cell carcinoma. The gene dosage of CCND1 was examined in 51 primary laryngeal squamous cell carcinomas, and amplification of the gene was found in 9 (17.6%) cases. CCND1 amplification did not correlate with age, tumor localization and extension, cervical lymph node involvement, ...

The continuous increase in the number of new chemical substances introduced into industry, or arising in the course of production, forces us to search for faster methods of establishing the maximum allowable concentrations (M.A.C.'s). It is obvious that the M.A.C. can only be one that does not have any harmful effects on the human organism in the course of full-time work of long duration. It is...

The authors investigated different sulfolane concentrations in surface water and also performed the field study. The results showed that the practical threshold value of sulfolane affecting the organoleptic property (order) of water amounted to 10.6 mg/L. The sulfolane concentration did not inhibit the process of biochemical oxygen demand (BOD). The chronic threshold and no-effect doses for sul...