Zobrazeno 1 - 10
of 210
pro vyhledávání: '"Gholamhassan Najafi"'
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 3, Pp 962-982 (2024)
Abstract In this research, the small segments parabolic dish concentrator (SSPDC) with a modified cavity was optically and thermally investigated. The SSPDC consisted of small mirrors that were tracking the sun individually. The SSPDC allows using di
Externí odkaz:
https://doaj.org/article/e05187c9e337494aa3794afc4b86dbec
Publikováno v:
Heliyon, Vol 10, Iss 11, Pp e32204- (2024)
Milk is a highly nutritious food essential for human consumption. However, traditional thermal processing methods can reduce its nutritional value and cause unwanted changes. The use of shock waves produced by pulsed electromagnetic fields (PEMFs) ha
Externí odkaz:
https://doaj.org/article/f73235ee679e41c0aeae66321828fcbd
Publikováno v:
Biomechanism and Bioenergy Research, Vol 2, Iss 1, Pp 24-31 (2023)
Walnut mechanical properties are an appropriate criterion for designing and adjusting the various parts of harvesting machines that are in contact with walnut. In this research, the aim is to find the effect of ultrasound factors on walnut mechanical
Externí odkaz:
https://doaj.org/article/b986210fc32f488fb4747d070362008c
Autor:
Pedram Ghiasi, Gholamhassan Najafi, Barat Ghobadian, Ali Jafari, Rizalman Mamat, Mohd Fairusham Ghazali
Publikováno v:
Alexandria Engineering Journal, Vol 67, Iss , Pp 51-64 (2023)
The high power coefficient of the Darrius vertical axis wind turbine lift regime has prompted researchers to concentrate their efforts on this regime, despite the fact that these turbines suffer from major problems in the drag-lift regime. In the pre
Externí odkaz:
https://doaj.org/article/e0649460021b444da9a0b1244e7da1c2
Publikováno v:
International Journal of Renewable Energy Development, Vol 11, Iss 2, Pp 471-480 (2022)
Renewable energy regulations place a premium on both the use of renewable energy sources and energy efficiency improvements. One of the growing milestones in building construction is the invention of green cottages. Building Integrated Photovoltaic (
Externí odkaz:
https://doaj.org/article/9c53f6923aa44c519c6b396611044c74
Publikováno v:
International Journal of Renewable Energy Development, Vol 10, Iss 2, Pp 269-281 (2021)
H-type Darrieus vertical axis wind turbines (VAWT) have omnidirectional movement capability and can get more power compared to other VAWTs at high tip speed ratios (𝜆). However, its disadvantages are self-starting inability and low generated power
Externí odkaz:
https://doaj.org/article/4bbf76cdeb4a4af1add41acf9818ba34
Autor:
Alireza Rafiei, Reyhaneh Loni, Mohammad Hossein Ahmadi, Gholamhassan Najafi, Evangelos Bellos, Fatemeh Rajaee, Ezzatollah Askari Asli‐Ardeh
Publikováno v:
Energy Science & Engineering, Vol 8, Iss 10, Pp 3544-3560 (2020)
Abstract In the present investigation, a solar parabolic trough concentrator (PTC) with a linear cavity was examined by using a developed numerical model. More specifically, a V‐shape cavity receiver was studied in this work as a new and alternativ
Externí odkaz:
https://doaj.org/article/82e5fccfae094051b96411b06f79a69b
Publikováno v:
Research in Agricultural Engineering, Vol 65, Iss 2, Pp 33-39 (2019)
Studying the physical and mechanical properties of agricultural products has been the subject of criticism and discussion for many years already and has attracted the attention of many researchers. The physical and mechanical properties of agricultur
Externí odkaz:
https://doaj.org/article/7d63b023a55c43d8bc8ae054c2b24200
Autor:
Fatemeh Zare, Gholamhassan Najafi, Teimour Tavakoli Hashjin, Alimashallah M. Kermani, Pedram Ghiasi
Publikováno v:
Advances in Horticultural Science, Vol 35, Iss 1 (2021)
The objective of this study was to measure and evaluate the performance of a New Pneumatic Harvester (NPH) for harvesting the olives fruit and compare the results with those of similar cases. The study involves two sections, namely, the NPH and the c
Externí odkaz:
https://doaj.org/article/73af6333602d4a02b25db610f1863040
Publikováno v:
Energies, Vol 14, Iss 19, p 6209 (2021)
The demand for fossil fuels is increasing because of globalization and rising energy demands. As a result, many nations are exploring alternative energy sources, and hydrogen is an efficient and practical alternative fuel. In the transportation indus
Externí odkaz:
https://doaj.org/article/1d7cb1eacc594fa3a5e1e90c9ece9900