In order to study the electrochemical corrosion law for the 13Cr stainless-steel tubing material in a high-speed Cl-containing liquid, a high-speed-flow experiment and a small three-electrode system, ...embedded in a small pipe, were used. The open circuit potential (OCP), polarization curve (PC) and electrochemical impedance spectroscopy (EIS) of the stainless-steel surface were tested in a medium with a flow velocity ranging from 10 to 22 m/s containing 1 w/% and 2 w/% of NaCl. By comparing it with the changes in the electrochemical-reaction parameters of the material in distilled water, the results of the experiment including the critical flow velocity, the change of corrosion rate and the electrochemical-reaction control steps were obtained. By theoretically solving the frictional force of the liquid against the wall surface and the adsorption capacity of the oxide film, and assuming that the oxide film is a macromolecular combination, the relationship between the adsorption capacity of different surface films and the critical flow velocity in the high-speed pipe flow was established. The results of this experiment and calculation can provide a preliminary prediction of the critical flow velocity corresponding to the inflection point of the wall-surface corrosion rate in an industrial pipe flow, thereby improving the process parameters and reducing the wall damage.
Potočno postrv (Salmo trutta L.) v reki Mislinji že desetletje z odvzemom vode iz struge ogrožajo male hidroelektrarne (MHE). Da bi ugotovili njihov vpliv na populacijo potočne postrvi, smo izvedli ...elektroizlov potočnih postrvi. Ujetim osebkom smo izmerili dolžino in maso. Pridobljene podatke smo analizirali in podali ugotovitve o biomasi, naseljenosti, povprečni masi in dolžini ter številu ujetih osebkov. Ugotovili smo, da se je populacija potočne postrvi na odsekih, kjer odvzemajo vodo za potrebe MHE, zmanjšala.
This article discusses cadastral surveying activities in the light of EU single market principles. Twenty years after its completion, it is still unclear to what extent these principles apply, ...including for the cadastral surveying activities. This article explains the fundamental legal principles of the EU single market and assesses the specific nature of cadastral surveying, which is partly excluded from and partly subject to the single market principles. In the last part of the article, the author assesses how the Slovenian Land Survey Service Act (ZgeoD-1) establishes a compromise between protection of national interests in cadastral surveying, the protection of clients and the advantages of the EU single market.
An application of data mining for the determination of flooded areas was published in the Journal Geodetski vestnik (no. 54/2010-4). This paper analyses the usefulness of these results for further ...analyses of hydraulic parameters. The velocity and discharges were computed for six locations. The study showed that the flooded areas determined by satellite images can be used for further analyses. Nevertheless, other layers have to be sufficiently precise, especially the digital terrain model (DTM). DTM 12.5 was used. The study showed that DTM 12.5 is not precise enough. The observed area is very rough and the hydraulic parameters (cross sectional area of flow, wetted perimeter, hydraulic radius, river-bottom slope, flow velocity, discharge) cannot be detected with sufficient precision. Consequently, the calculated hydraulic radiuses, velocities and discharges are out of expectations. In the first part of the article, some basic information about remote sensing and its techniques is presented. Some practical examples of their usage (especially satellite images) for the observation of natural disasters are also given.
This ambitious volume provides a trenchant and timely analysis of the creation of a single market in both the EU and the US. Comparing the experience of the US during the nineteenth century and the ...single market of the EU in the twentieth century, the book demonstrates how the political economy of single market formation has followed remarkably similar trajectories. Both cases show evidence of interplay between different levels of government in determining distributive outcomes; evolution of a legal framework for the market; and development of new regulatory strategies to deal with changing economic realities. The book illustrates the process of market consolidation through a detailed comparison of the so-called four freedoms: the removal of border controls; and the largely unrestricted transfer of goods, services, and capital across different jurisdictions. In both cases, establishing one market, one currency, and a more unified banking and financial system transformed largely autonomous or sovereign constituent units into a more unified economic entity. Single Markets also sheds light on critically important questions for both comparativists and international relations scholars regarding the nature of territorial governance and the construction of state interests. The book's interdisciplinary approach to focusing on crucial political and economic developments on both sides of the Atlantic will be of interest to scholars in political science, public policy, law, and history.
Na sektorju za hidrologijo Agencije Republike Slovenije za okolje (ARSO) na območju Bohinja izvajamo opazovanja na Savici v Ukancu, na Mostnici v Stari Fužini, na Savi Bohinjki pri Svetem Janezu, na ...Bistrici v Bohinjski Bistrici ter na Bohinjskem jezeru pri Svetem Duhu. Podatke meritev preverjamo in usklajujemo z meteorološkimi pri vodni bilanci. V podporo našim rednim meritvam izvajamo tudi sledilne poskuse. Dva, ki smo ju izvedli na območju Bohinja, sta skupaj z rezultati bilance potrdila, da vodozbirnih zaledij tukajšnjih v.p. ne moremo obravnavati ločeno.
PDF
