Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Jiří Tůma"'
Publikováno v:
Plant, Soil and Environment, Vol 68, Iss 9, Pp 431-440 (2022)
Four different rapeseed (Brassica napus L.) cultivars CZL, Benefit, Iwas and ZhongZhuang9, were used to analyse physiological responses to higher doses of cadmium (Cd) and their ability of Cd accumulation. Plants were exposed for 30 days to different
Externí odkaz:
https://doaj.org/article/af1143fd63ce47dfa4fd022d3e3e4c2e
Autor:
Solveig Valderhaug, Natalie Paškanová, Jiří Tůma, Jana Herciková, Václav Eigner, Huiling Liu, Alexey Gorovoy, Jon Eigill Johansen, Odd Reidar Gautun
Publikováno v:
Heliyon, Vol 9, Iss 6, Pp e16987- (2023)
Chlorinated paraffins (CPs) are a notoriously known class of compounds that stand amongst the most wide-spread persistent organic pollutants. Therefore, their reliable, repeatable, and reproducible quantitative analysis using well-defined reference s
Externí odkaz:
https://doaj.org/article/0f3e17cdf8dc49b396b3a37f8906ad4d
Publikováno v:
ACS Omega, Vol 7, Iss 8, Pp 6510-6517 (2022)
Externí odkaz:
https://doaj.org/article/26f1e5c349284714ad60e658f554bc88
Publikováno v:
Journal of Mechanical Engineering, Vol 68, Iss 4, Pp 65-74 (2018)
The problem of active vibration control of weakly damped mechanical structures is potentially unstable modes of vibrations due to the positive feedback for some vibration modes. The paper will discuss the change of positive feedback on the negative o
Externí odkaz:
https://doaj.org/article/8c97242dceca424d925c498dbc5971e6
Publikováno v:
Transactions of the VŠB-Technical University of Ostrava, Mechanical Series, Vol 62, Iss 1, Pp 67-74 (2016)
The article deals with the stability of the movement of the journal inside the bushing of the hydrodynamic plain bearings, which limits the operational range of rotor rotational speed. The purpose of active vibration control using piezoactuators is t
Externí odkaz:
https://doaj.org/article/d97ae7db26234352a23dc6259a37c52a
Publikováno v:
Sensors, Vol 19, Iss 8, p 1805 (2019)
This paper presents a machine vision method for detection and classification of copper ore grains. We proposed a new method that combines both seeded regions growing segmentation and edge detection, where region growing is limited only to grain bound
Externí odkaz:
https://doaj.org/article/5b1e5b807c134c279e5c2bb5fc5aeffd
Publikováno v:
Molecules, Vol 15, Iss 1, Pp 331-340 (2010)
Substituted pyrazinecarboxamides markedly influenced production of flavonolignans in Silybum marianum callus and suspension cultures. In this study the effect of two compounds, N-(3-iodo-4-methylphenyl)pyrazine-2-carboxamide (1) and N-(3-iodo-4-methy
Externí odkaz:
https://doaj.org/article/91beb74d0ac748a09ab4e655b8b08f73
Publikováno v:
Transactions of the VŠB-Technical University of Ostrava, Mechanical Series, Vol 55, Iss 2 (2009)
This contribution describes techniques and results of measurement with TIRA vibration generator. A method of experimental modal analysis allows next restore of vibration data. The goal is check validity of head expanders and screw connection. This pr
Externí odkaz:
https://doaj.org/article/17c9c58c5b4a43ab8f9e6de549eaa3bc
Publikováno v:
Transactions of the VŠB-Technical University of Ostrava, Mechanical Series, Vol 55, Iss 2 (2009)
The paper deals with design of the computer system for measurements of the phase shift between two harmonic signals using the Digital Signal Processor (DSP). The introducing part of the paper describes properties of the harmonic signals and the Hilbe
Externí odkaz:
https://doaj.org/article/503601966b144efa89900bf56d5a0550
Publikováno v:
Transactions of the VŠB-Technical University of Ostrava, Mechanical Series, Vol 55, Iss 2 (2009)
This work is specialized on testing of several sensors for measurement vibration, that be applicable for measurement on vehicles also behind running. These sensors are connected to PC and universal mobile measuring system cRIO (National Instruments)
Externí odkaz:
https://doaj.org/article/d260090b46a0498a821209e21afeca2c