Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Gunnar Hellström"'
Publikováno v:
Journal of Applied Fluid Mechanics, Vol 8, Iss 3, Pp 579-589 (2015)
The performance of a fish guiding device located just upstream a hydropower plant is scrutinized. The device is designed to redirect surface orientated down-stream migrating fish (smolts) away from the turbines towards a spillway that act as a relati
Externí odkaz:
https://doaj.org/article/cfb52c9999444472b5e1632a7b95fc8d
Publikováno v:
Transport in Porous Media. 135:219-242
This paper presents the development of a model enabling the analysis of rarefied gas flow through highly heterogeneous porous media. To capture the characteristics associated with the global- and the local-scale topology of the permeable phase in a t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b8d65c91a15060b5d35cb1056df939a
https://doi.org/10.1007/s11242-020-01476-z
https://doi.org/10.1007/s11242-020-01476-z
Publikováno v:
Proceedings of the 39th IAHR World Congress.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::526d0f0e702a2d0a325908dc6553ddb1
https://doi.org/10.3850/iahr-39wc2521711920221796
https://doi.org/10.3850/iahr-39wc2521711920221796
Publikováno v:
Proceedings of the 8th IAHR International Symposium on Hydraulic Structures ISHS2020.
A numerical investigation of a hydropower tunnel has been implemented in this project. The tunnel geometry data were taken from a laser scanning of a tunnel positioned in Gavunda, Sweden. While the average cross-section of the tunnel is even, in acco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff8664eca5a856e17ddfed7e76012e3d
https://doi.org/10.14264/uql.2020.615
https://doi.org/10.14264/uql.2020.615
Autor:
Anders Andersson, Robin Andersson, Kristian Angele, Mikael Hedberg, Patrik Andreasson, Gunnar Hellström
Publikováno v:
Proceedings of the 8th IAHR International Symposium on Hydraulic Structures ISHS2020.
Mathematical modelling of single spillways is well documented in literature. For parallel spillways however, there is a lack of documented, verified, and validated cases. Here, in this article, ANSYS-CFX is used to simulate the flow over three parall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76f1b7b900ba70392aba9d34652fccc9
https://doi.org/10.14264/uql.2020.606
https://doi.org/10.14264/uql.2020.606
Publikováno v:
Engineering. :217-229
The rheological properties of cement-based grouts containing talc or palygorskite were investi- gated for optimizing fluidity and quick strengthening at injection. The fluidity controls the ability of grout to penetrate fractures and can be determine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff516f6a595ad0080eec755815ca4707
https://doi.org/10.4236/eng.2014.65026
https://doi.org/10.4236/eng.2014.65026
Publikováno v:
Journal of Polymer Science: Polymer Symposia. 42:457-465
Phenyl methacrylate (PMA), as well as its 2- and 4-methoxy analogs (2-MeOPMA and 4-MeOPMA, respectively) were polymerized by free radical and anionic polymerization reactions. On anionic polymerization in toluene termination reactions occurred, and p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b851050aa4e2d619de2c88212b021802
https://doi.org/10.1002/polc.5070420152
https://doi.org/10.1002/polc.5070420152
Autor:
Gunnar Hellström
Publikováno v:
Internet Protocol-Based Emergency Services
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7767756ae058d744b3ceac5522379c56
https://doi.org/10.1002/9781119993858.ch6
https://doi.org/10.1002/9781119993858.ch6
Autor:
Gunnar Hellström, Nils Wahlgren
Publikováno v:
Neuro Surgical Review. 16:151-156
The effect on the middle cerebral artery blood flow velocity (VMCA) of moderate and hard physical exercise on an ergometer cycle was examined in 10 healthy volunteers using transcranial Doppler sonography (TCD). During exercise, the heart rate increa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd1916900d87e33b33c7a2abc8a2198f
https://doi.org/10.1007/bf00258249
https://doi.org/10.1007/bf00258249
Publikováno v:
Cephalalgia. 10:31-38
Nitroglycerin (NG) induces in cluster headache patients and controls an increase in systemic diastolic blood pressure and/or heart rate and a decrease in blood flow velocity in the middle cerebral artery (VMCA). Termination of NG induced cluster head
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eba76abdf8eae0b8e219fd572b39f5be
https://doi.org/10.1046/j.1468-2982.1990.1001031.x
https://doi.org/10.1046/j.1468-2982.1990.1001031.x