Wyniki wyszukiwania - BazTech

1

Beht Watershed (Morocco) Rainfall-Runoff Simulation with the HEC-HMS Hydrological Model

Daide Fatima, Afgane Rachida, Lahrach Abderrahim, Chaouni Abdel-Ali

Ecological Engineering & Environmental Technology

|

2022

|

Vol. 23, iss. 1

142--155

EN

This research aimed to prepare for spatial hydrological modeling using the Hydrologic Modeling System (HECHMS) by integrating different spatial technologies to study the Beht catchment area, which covers 4560 km2 and also has a perimeter of 414 km. Firstly, the approach was to extract automatically the sub-basins and the drainage network. Then, these data were edited using the HEC-GEO-HMS extension, whereas the land use and land cover data were prepared for the generation of a Curve Number (CN) map of Beht watershed; lastly, the basin model was imported into the Hydrologic Modeling System (HEC-HMS) to simulate the surface runoff. The findings indicated a good match between the calculated and measured values and revealed also that the model is valid, good and performed well in terms of assessment criterion, with average values of Relative Error in peak: REP = 9.6%, Relative Error in volume: REV = 1.69%, Nash-Sutcliffe Efficiency: NSE = 0.63, coefficient of determination: R2 = 0.870, and Ratio of standard deviation of observations to root mean square error: RSR = 0.36.

2

System for converting import and export of commodities statistics’ based on combined Nomenclature (CN) to statistics based on Transport statistics (NST classification) - Polish case

Chakuu S., Nędza M.

Logistyka

|

2014

|

nr 6

2542--2551

EN

The statistical data is of utmost importance in any field. It plays an important role in measuring the various aspects of the goods flow from one place to another. In member countries of the European Union, use of statistical approach highlights the flow of goods between the member states. Most of the times, the data acquired by the member states at the national level is of different format, making the analysis of the data quite difficult. The unification of the data has a significant value. Usage of uniform system across the EU and world is of extreme significance in the field of logistics and Transportation. The normalized and standardized system benefits the business in an enormous extent. Most of EU member states have developed combined nomenclature (CN) to classify the commodities, which are imported and exported. As CN classification includes large segments, the comparison or processing of data is quite difficult. In order to avoid this, a system capable of converting the statistics based on CN to statistics based on Transport statistics classification (NST) will make the analysis quite clear and lot easier.

PL

Dane statystyczne są niezwykle ważne w każdej dziedzinie. Odrywają one istotną rolę w pomiarze różnych aspektów przepływu towarów z jednego miejsca do drugiego. W krajach członkowski UE, zastosowanie podejścia statystycznego oparte jest na przepływie dóbr pomiędzy krajami. W większości przypadków, dane zebrane przez państwa członkowskie na poziomie krajowym znajdują się w różnych formatach, co bardzo utrudnia ich późniejszą wspólną analizę. Kluczową wartość posiada więc zunifikowanie tych danych. Wykorzystanie jednolitego systemu zbierania danych w UE ma ogromne znaczenie w obszarach logistyki i transportu. Na znormalizowanym i ustandaryzowanym systemie skorzysta w ogromnym stopniu biznes. Większość państw członkowskich UE w celu klasyfikacji wywożonych i wwożonych towarów, opracowały Nomenklaturę Scaloną(CN). Jako, że opiera się ona na dużych segmentach danych, porównywanie czy przetwarzanie danych staje się trudne. W celu uniknięcia tej sytuacji, stworzony system do konwertowania statystyki z nomenklatury CN na statystyki transportu(NST) ułatwi analizę danych.

3

Determination of some psychotropic drugs in human plasma by HPTLC

Wróblewski K., Petruczynik A., Waksmundzka-Hajnos M.

Acta Chromatographica

|

2014

|

Vol. 26, no. 2

297--307

EN

Psychotropic drugs: desipramine, olanzapine and mitrazapine were chromatographed on cyanopropyl-silica and Diol-silica thin layers using various nonaqueous and aqueous eluents.The best results were obtained with addition of ammonia to nonaqueous eluent on both adsorbents. On the basis of the optimization, systems for extraction from human plasma and quantitative determination of investigated drugs were selected.RP18 encaped SPE columns conditioned and pre-eluted with acetonitrile:water:ammonium buffer at pH 8.6 (5:5:2) and eluted with methanol:water (9:1) containing 2% acetic acid were used for sample preparation with high recoveries of all investigated drugs. Diol and CN plates with mixture of 15% methanol in diisopropyl ether + 1% ammonia were used for quantitative analysis by a calibration curve method.