Autor: Moussaoui, L. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Physico-chemical quality of drinking water in the south of Algeria (Case of El-Oued region) study of excess minerals
Autorzy:: Zobeidi, A.
Moussaoui, L.
Powiązania:: https://bibliotekanauki.pl/articles/411625.pdf
Data publikacji:: 2013
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: mineral salts
drinking water
El-Oued
urinary calculi
Opis:: The aim of this study was to determine the physicochemical composition of water intended for human consumption in several regions of El-Oued - Algeria. Excess minerals in drinking water, including magnesium, calcium, sulfates, chloride and fluorides play a fundamental role in the prevention of urinary calculi, which are formed mainly from calcium oxalate. The results revealed that wholes water samples are analyzed magnesium ([Mg 2+] > 50 mg / L). The rate of sulfate ions average 638 mg / l, exceeding the maximum allowable concentration (MAC) recommended by WHO ([SO42ˉ] > 250 mg / L). In addition, 85 % had excess fluoride [Fˉ] > 0.85 mg / L, and 100 % are calcium, the rate of Ca2+ is greater than 150 mg / L.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2013, 11; 38-43
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Analytical models synthesis of power electronic converters
Autorzy:: Ales, A.
Cheurfi-Belhadj, M. A.
Schanen, J. L.
Moussaoui, D.
Roudet, J.
Powiązania:: https://bibliotekanauki.pl/articles/136182.pdf
Data publikacji:: 2017
Wydawca:: EEEIC International Barbara Leonowicz Szabłowska
Tematy:: EMC modelling
differential mode
common mode
EMC filter
LISN
EMI
conducted noise
noise source
Opis:: In this paper we proposes a synthesis of different mathematical models of power electronic converters based on Thevenin/Norton equivalent circuits. Those models, composed by impedances and harmonic noise sources, are helpful to predict the conducted ElectroMagnetic Interferences (EMI) generated by converters connected to the electrical network. Moreover, the extracted impedances are determining for sizing EMC filters. The proposed analytical model is tested with PSpice simulations and validated by experimental measurements, from DC frequency until 30MHz.
Źródło:: Transactions on Environment and Electrical Engineering; 2017, 2, 1; 52-59
2450-5730
Pojawia się w:: Transactions on Environment and Electrical Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Comparative study of Sb₂O₃ (Sb₂O₅) and Ta₂O₅ doping effects with TeO₂ on electrical properties of δ-Bi₂O₃
Autorzy:: Loubbidi, L.
Chagraoui, A.
Villain, S.
Bourja, L.
Orayech, B.
Ait Sidi Ahmed, O.
Moussaoui, A.
Tairi, A.
Powiązania:: https://bibliotekanauki.pl/articles/1154652.pdf
Data publikacji:: 2016-10
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 81.05.Je
82.47.Ed
Opis:: In this study, Sb₂O₃ (Sb₂O₅) and Ta₂O₅ are used as co-dopants with TeO₂ to stabilize the delta phase of bismuth oxide (δ -Bi₂O₃). Some compositions with formula (1-x) BiO_{1.5}-(x/4) Sb₂Te₂O₉ and (1-x) BiO_{1.5}-(x/4) Ta₂Te₂O₉ (x=0.1, 0.2, 0.3, 0.6, and 0.9) have been synthesized by solid state reaction at 850°C and characterized by powder X-ray diffraction. The Bi_{0.9}Sb_{0.05}Te_{0.05}O_{1.575}, Bi_{0.9}Ta_{0.05}Te_{0.05}O_{1.575} and Bi_{0.8}Ta_{0.1}Te_{0.1}O_{1.65} retain a cubic fluorite structure of δ -Bi₂O₃ phase. The electric properties were studied by impedance spectroscopy. All samples were evaluated by calculating conductivities and activation energies. Various impedance model including constant phase element and the Warburg impedances have been used to interpret the Nyquist representations of electrical analyses.
Źródło:: Acta Physica Polonica A; 2016, 130, 4; 862-865
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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