The paper presents the initial results of the epoxy-glass composite samples analyses carried out with the use of terahertz spectroscopy. Firstly, the standard specimens made of epoxy resin and glass fibers were researched. The first sample consisted of one layer of glass fiber, the second one had two such layers. To compare the results the results of the composite material sample shut with the ...

Abstract Fiber optic sensing has gained importance for wellbore monitoring and reservoir characterization in geothermal fields as it allows continuous, spatially highly resolved measurements. Distributed acoustic (DAS) distributed temperature (DTS) technologies, among others, enable of flow regimes heat transport inside the to describe dynamical behavior reservoir. The technically challenging i...

Design and construction of a stable current supply with protection circuits are described. The reported circuit provides a high-stable and high-level current variable from 0.5-1.2 A with the protect ion circuits to prevent over load current, voltage and off-range temperature operation. A detailed analysis of the circuit parameters is given and the time behaviors of the load voltage/current and ...

[1] It is generally accepted that surface freshwater anomalies in the Southern Ocean drive increases in North Atlantic Deep Water (NADW) formation via a bipolar density see-saw. We find that a Southern Ocean freshwater pulse of comparable magnitude to meltwater pulse 1A, shuts down, instead of strengthens, NADW in a glacial climate simulation. Unlike the modern-day simulation, the glacial exper...

ABSTRACT Galaxy mergers trigger both star formation and accretion on to the central supermassive black hole. As a result of subsequent energetic feedback processes, it has long been proposed that may be promptly extinguished in galaxy merger remnants. However, this prediction widespread, rapid quenching late stage recently called into question with modern simulations never tested observationall...

During the heating period, thermal storage electric boiler helps power units to participate in deep peak regulation by converting energy into heat for users, but non-heating can not operate because there is no user, as a result, shut down summer, and assist unit regulation. Therefore, this paper designs an regenerative system shaving summer. In system, used circulating water condensed number of...

Testing should never become a mindless exercise in which operations personnel blindly follow proceMany papers have been published extending the dures written by others. The people who are theoretical understanding of pressure transient implementing the test should be actively trying to analysis. Most of these papers have concentrated on achieve the test objectives. It is often difficult or anal...