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Właściwości zbiornikowe utworów wapienia muszlowego na Niżu Polskim
MARZENA, GANCARZ - In: Gospodarka Surowcami Mineralnymi / Mineral Resources … 31 (2015) 1, pp. 65-80
Utwory wapienia muszlowego (trias środkowy) zajmują ponad 70% obszaru Niżu Polskiego. Reprezentowane są przede wszystkim przez różne odmiany wapieni, dolomitów i margli. Stanowią jeden z mniej rozpoznanych poziomów wodonośnych formacji mezozoicznej na Niżu Polskim, dlatego wzbudzają...
Persistent link: https://www.econbiz.de/10011212509
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STRUCTURAL AND OPTICAL PROPERTIES OF n-TYPE POROUS SILICON — EFFECT OF HF CONCENTRATION
JEYAKUMARAN, N.; NATARAJAN, B.; RAMAMURTHY, S.; VASU, V. - In: Surface Review and Letters (SRL) 14 (2007) 02, pp. 293-300
Porous silicon layers have been prepared from n-type silicon wafers of (100) orientation. SEM, XRD, FTIR, and PL have been used to characterize the morphological and optical properties of porous silicon. The influence of varying HF concentration in the anodizing solution, on structural and...
Persistent link: https://www.econbiz.de/10005080608
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Analysis of the structure of electrically conductive composite ceramics
Maistat, Mykyta; Kryvobok, Andrii - In: Technology audit and production reserves 1 (2024) 3/75, pp. 6-8
Persistent link: https://www.econbiz.de/10014507202
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Three dimensional numerical investigations for the effects of gas diffusion layer on PEM fuel cell performance
Inamuddin; Cheema, Taqi Ahmad; Zaidi, S.M.J.; Rahman, S.U. - In: Renewable Energy 36 (2011) 2, pp. 529-535
of the GDL. The performance of PEM fuel cell varies with different porosity and thickness of the GDL. Hence, a three … dimensional model is simulated to find out the effects of porosity and thickness of GDL on PEMFC performance using a commercial … code CFD-ACE+. It was observed that high porosity gave high current density by allowing more reactants to reach the …
Persistent link: https://www.econbiz.de/10010806233
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Thermal and thermohydraulic performance evaluation of a novel type double pass packed bed solar air heater under external recycle using an analytical and RSM (response surface meth...
Singh, Satyender; Dhiman, Prashant - In: Energy 72 (2014) C, pp. 344-359
) glass covers for a fixed 95% porosity of the packed material on its thermal and thermohydraulic performances. The analytical …
Persistent link: https://www.econbiz.de/10010809784
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STRUCTURAL AND OPTICAL PROPERTIES OF n-TYPE POROUS SILICON: EFFECT OF LIGHT ILLUMINATION
JEYAKUMARAN, N.; NATARAJAN, B.; PRITHIVIKUMARAN, N.; … - In: Surface Review and Letters (SRL) 15 (2008) 06, pp. 897-901
Porous silicon (PS) layers have been prepared from n-type silicon wafers of (100) orientation. SEM, FTIR, and PL have been used to characterize the morphological and optical properties of PS. The influence of varying light illumination in the anodizing solution, on structural and optical...
Persistent link: https://www.econbiz.de/10004971860
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Asymptotic expansions for statistics computed from spatial data
García-Soidán, P. - In: TEST: An Official Journal of the Spanish Society of … 5 (1996) 1, pp. 61-76
Persistent link: https://www.econbiz.de/10005613294
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Boundaries and Conflict in the Mano River Region of West Africa
Silberfein, Marilyn; Conteh, Al-Hassan - In: Conflict Management and Peace Science 23 (2006) 4, pp. 343-361
The porous and contestable features of African boundaries are two interacting themes that are closely linked to the emergence and spread of conflict in Africa in the last decade. This study uses the Mano River Region—Sierra Leone, Guinea, Liberia, and Ivory Coast—to illustrate how...
Persistent link: https://www.econbiz.de/10010770236
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Dynamically tessellating algorithm for analysis of pore size distribution in particle agglomerates
Benedict, Mark; Dutt, Meenakshi; Elliott, James - In: Physica A: Statistical Mechanics and its Applications 378 (2007) 2, pp. 465-474
of structural changes on the porosity network; for example, during the uniaxial compaction of soft spheres, we find the …
Persistent link: https://www.econbiz.de/10010589807