Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Petru Cardei"'
Publikováno v:
Journal of Engineering Studies and Research, Vol 29, Iss 4 (2024)
The article describes the results of the research carried out for the systemic description of the manufacturing technological processes of composite materials with clay matrix and insert from agricultural waste. The objectives of these researches inc
Externí odkaz:
https://doaj.org/article/a0af7c7535644f86bc8bda2319650a55
Publikováno v:
Journal of Applied Life Sciences and Environment, Vol 55, Iss 2(190), Pp 159-165 (2023)
This article presents complementary results on experimental data on the process of reducing the size of plant biomass by mechanical cutting. According to the source of the experimental data, the problem of statistical modelling of the main parameters
Externí odkaz:
https://doaj.org/article/52f1228558b846cb9a262d2ebc72e7b3
Autor:
Petru Cardei, Nicolae Constantin, Vergil Muraru, Catalin Persu, Raluca Sfiru, Nicolae-Valentin Vladut, Nicoleta Ungureanu, Mihai Matache, Cornelia Muraru-Ionel, Oana-Diana Cristea, Evelin-Anda Laza
Publikováno v:
Agriculture, Vol 13, Iss 8, p 1565 (2023)
The article continues the exposition of the results obtained in researching an agricultural machine for processing soil, designed for research with applications including exploitation. The MCLS (complex machine for soil tillage) was designed to resea
Externí odkaz:
https://doaj.org/article/87c68ea7a4a844e29a8830c8db2cc3e5
Autor:
Petru Cardei, Florin Nenciu, Nicoleta Ungureanu, Mirabela Augustina Pruteanu, Valentin Vlăduț, Dan Cujbescu, Iuliana Găgeanu, Oana Diana Cristea
Publikováno v:
Applied Sciences, Vol 11, Iss 17, p 8261 (2021)
The aim of the study was to identify new mathematical models and strategies that can characterize the behavior of pollutants accumulating in the soil over time, considering the special characteristics of these chemicals that cannot be degraded or des
Externí odkaz:
https://doaj.org/article/4fd9eaae21334bcdb4d840db5ab41360
Autor:
Iuliana Gageanu, Dan Cujbescu, Catalin Persu, Paula Tudor, Petru Cardei, Mihai Matache, Valentin Vladut, Sorin Biris, Iulian Voicea, Nicoleta Ungureanu
Publikováno v:
Energies, Vol 14, Iss 14, p 4104 (2021)
This paper presents theoretical and experimental research studying the influence of process parameters on the quality of biomass pellets. A validated mathematical model was developed, expressing the density of biomass pellets as determined by moistur
Externí odkaz:
https://doaj.org/article/3c4be0fab4a248688745ce6c50a42a9d
Autor:
Petru Cardei
Publikováno v:
International Journal of Applied Sciences & Development. 1:52-63
The article presents results obtained in attempts to quantify randomness characteristics for real numerical sequences or strings, using relative entropy. The characterization of the randomness of a series of real numbers is proposed to guide research
Autor:
Petru Cardei, Constantina Chireceanu
Publikováno v:
WSEAS TRANSACTIONS ON BIOLOGY AND BIOMEDICINE. 20:12-23
The article presents a mathematical model for experiments evaluating the effectiveness of diatomaceous earth treatments against the bean weevil, Acanthoscelides obtectus. The proposed mathematical model is of the differential type, inspired by the ca
Publikováno v:
INMATEH Agricultural Engineering. :456-464
The article presents results obtained in the experimental research of agricultural aggregates intended for soil processing, with special reference to rotary harrows with vertical axis rotor. The authors approach the description of the working process
Autor:
Petru Cardei
Publikováno v:
International Journal of Applied Mathematics, Computational Science and Systems Engineering. 4:51-59
In many cases, the influence of some of the characteristic parameters of some systems becomes important in relation to the influence of the other parameters, only when certain critical operating regimes are exceeded. These operating modes are often i
Autor:
Catalina STAN(TUDORA), Petru CARDEI, Adriana MUSCALU, Oana Alina BOIU-SICUIA, Nicolae Valentin VLADUT, Florentina ISRAEL-ROMING
Publikováno v:
AgroLife Scientific Journal. 11:211-220
The paper presents descriptive statistics of the experimental results regarding the potential antifungal activity of four essential oils obtained from new varieties of medicinal plants created in Romania (Yellow basil, Red basil, Marigold and Hyssop)