Results 11 to 20 of about 4,894,783 (245)

Effect of Nutritional Determinants and TonB on the Natural Transformation of Riemerella anatipestifer

open access: yesFrontiers in Microbiology, 2021
Riemerella anatipestifer is a gram-negative bacterium that is the first naturally competent bacterium identified in the family Flavobacteriaceae. However, the determinants that influence the natural transformation and the underlying mechanism remain ...
Li Zhang   +55 more
doaj   +1 more source

DESIGN OF BAND-PASS FILTERS WITH NON-EQUIRIPPLE FREQUENCY RESPONSES

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2019
Introduction. Band-pass filters circuit elements can be calculated by converting low-pass filter (LPF) parameters, which is the prototype of the designed band-pass filter.
Evgeniy N. Chervinskiy
doaj   +1 more source

Frequency and fundamental signal measurement algorithms for distributed control and protection applications [PDF]

open access: yes, 2009
Increasing penetration of distributed generation within electricity networks leads to the requirement for cheap, integrated, protection and control systems.
Burt, G.M.   +2 more
core   +4 more sources

The Effect of Drying–Wetting Cycles on Soil Inorganic Nitrogen Transformation in Drip-Irrigated Cotton Field Soil in Northwestern China

open access: yesApplied Sciences, 2023
Drip irrigation under plastic mulch is widely used and leads to periodic drying–rewetting (DW) cycles in Xinjiang, Northwest China. However, the effect of different wet and dry alternation types on soil inorganic nitrogen transformation is not clear ...
Honghong Ma   +3 more
doaj   +1 more source

THE METOD OF SYNTHESIS OF QUASI-DUAL-BAND MATCHING DEVICE

open access: yesДоклады Белорусского государственного университета информатики и радиоэлектроники, 2020
The article presents some findings on the potential of analytical methods for the synthesis of broadband matching circuits for solving nontrivial circuit engeneering problems.
M. A. Yantsevich, H. A. Filipovich
doaj   +1 more source

Application of Time-Frequency Analysis in Rotating Machinery Fault Diagnosis

open access: yesShock and Vibration, 2023
Fault diagnosis is an important means to ensure the safe and reliable operation of mechanical equipment. In machinery fault diagnosis, collecting and mining the potential fault information of the vibration signal is the most commonly used method to ...
Yihao Bai   +3 more
doaj   +1 more source

Multiband Filter Design Using Generalized Mapping Functions and Synthesis with Lumped Resonators [PDF]

open access: yesRadioengineering, 2020
In this paper, a new multiband frequency mapping function is proposed to design multiband filter. The presented mapping function is a generalized form of the sequential low pass to band pass (LPtoBP) transformation.
S. Yildiz   +3 more
doaj  

Highly efficient Agrobacterium rhizogenes-mediated hairy root transformation in citrus seeds and its application in gene functional analysis

open access: yesFrontiers in Plant Science, 2023
Highly efficient genetic transformation technology is beneficial for plant gene functional research and molecular improvement breeding. However, the most commonly used Agrobacterium tumefaciens-mediated genetic transformation technology is time-consuming
Min Wang   +4 more
doaj   +1 more source

The Jamaica Education Transformation Commission, 2021: Summary of Recommendations

open access: yes, 2021
Jamaica’s education system boasts many successes: among these are relatively high enrolment rates at some levels, and world class universities that yield talented individuals of the highest calibre.
The Jamaica Education Transformation Commission
core   +1 more source

The development of a multi-frequency electromagnetic instrument for monitoring the phase transformation of hot strip steel. [PDF]

open access: yes, 2005
This paper describes the development of an instrument to analyze the phase transformations of hot strip steel using an electromagnetic sensor. The sensor exploits variations in the electrical conductivity and magnetic permeability of the steel to monitor
Dickinson, S. J.   +4 more
core   +4 more sources

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