Autor: Miguel, A F - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Wind-caused air transport through greenhouse screens: a physical modelling approach
Autorzy:: Miguel, A F
Powiązania:: https://bibliotekanauki.pl/articles/26494.pdf
Data publikacji:: 1999
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: porous screen
air transport
screen
greenhouse
climate control
physical model
air exchange
wind pressure
Źródło:: International Agrophysics; 1999, 13, 2
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A posteriori error estimates for beams with inexact flexural stiffness representation
Autorzy:: Torii, André J.
Gracite, Paula M.A.
Miguel, Leandro F.F.
Lopez, Rafael H.
Powiązania:: https://bibliotekanauki.pl/articles/24201505.pdf
Data publikacji:: 2023
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: beam
error estimate
inexact stiffness
belka
oszacowanie błędów
Opis:: In this work, we present a posteriori error estimates for the Euler-Bernoulli beam theory with inexact flexural stiffness representation. This is an important subject in practice because beams with non-uniform flexural stiffness are frequently modeled using a mesh of elements with constant stiffness. The error estimates obtained in this work are validated by means of two numerical examples. The estimates presented here can be employed for adaptive mesh refinement.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2023, 22, 2; 62--74
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Influence of Natural Fibers on the Fresh and Hardened Properties of Self-Compacting Concrete (SCC)
Autorzy:: Tan, Vicente Miguel A.
Yambao, Mon Emilbert F.
Bravo, Rodrigo Rafael
Familara, Joanne A.
Powiązania:: https://bibliotekanauki.pl/articles/1076564.pdf
Data publikacji:: 2019
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Coconut Fiber
Filling Ability
Passing ability
Rice Straw Fiber
Segregation Resistance
Self-Compacting Concrete
Opis:: The main purpose of the study is to explore the effect of the plant fibers having different volume fraction on the fresh properties of the mix design of SCC such as filling ability, passing ability and segregation resistance as well as its influence on the compressive strength of the hardened SCC. The study started by conducting preliminary test on the aggregates needed in the construction of SCC. The aggregates were mixed together until uniform consistency was attained. Different volume fractions of CN and RS fibers were added on the mix design and molded in a cylindrical molder. The concrete were dried for 48 hours then placed in curing tank. Filling ability were tested by means of slump flow and T500 test. Passing ability were tested using J-ring while segregation resistance were tested using V-funnel and T5min. Hardened SCC with plant fibers were tested for its compressive strength. Based from the collected data, the filling ability were significantly affected by decreasing the slump flow of self-compacting concrete while increasing the time of SCC to spread to a diameter of 500 mm (T500). Furthermore, the passing ability and segregation resistance of SCC increases upon adding various volume fractions of CN and RS fibers. Statistical analysis further proves that there is significant difference between the normal SCC and the SCC with different percentages of CN and RS fibers. In addition, most favorable compressive strength were found when 0.05% CN fiber and 0.10% RS fiber were added to SCC after 7 and 28 curing days.
Źródło:: World Scientific News; 2019, 115; 229-241
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Methodology for measurement the energy efficiency involving solar heating systems using stochastic modelling
Autorzy:: Menita, B. G.
Medeiros, G. P.
Domingos, J. L.
Domingues, E. G.
Alves, A. J.
Faria, A. F.
Miguel, M. L. S.
Calixto, W. P.
Powiązania:: https://bibliotekanauki.pl/articles/136254.pdf
Data publikacji:: 2017
Wydawca:: EEEIC International Barbara Leonowicz Szabłowska
Tematy:: energy efficiency
geometric brownian motion
Monte Carlo simulation
performance measurement
verification
solar water heating
Opis:: The purpose of the present study is to evaluate gains through measurement and verification methodology adapted from the International Performance Measurement and Verification Protocol, from case studies involving Energy Efficiency Projects in the Goias State, Brazil. This paper also presents the stochastic modelling for the generation of future scenarios of electricity saving resulted by these Energy Efficiency Projects. The model is developed by using the Geometric Brownian Motion Stochastic Process with Mean Reversion associated with the Monte Carlo simulation technique. Results show that the electricity saved from the replacement of electric showers by solar water heating systems in homes of low-income families has great potential to bring financial benefits to such families, and that the reduction in peak demand obtained from this Energy Efficiency Action is advantageous to the Brazilian electrical system. Results contemplate also the future scenarios of electricity saving and a sensitivity analysis in order to verify how values of some parameters influence on the results, once there is no historical data available for obtaining these values.
Źródło:: Transactions on Environment and Electrical Engineering; 2017, 2, 1; 42-51
2450-5730
Pojawia się w:: Transactions on Environment and Electrical Engineering
Dostawca treści:: Biblioteka Nauki

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