Results 51 to 60 of about 10,103 (245)

Ligand‐dependent transcriptional heterogeneity in cell cycle gene expression delays G1/S entry

open access: yesFEBS Letters, EarlyView.
EGF and HRG induce distinct G1/S progression programs in ErbB2‐amplified BT474 breast cancer cells. Despite activating the potent ErbB2–ErbB3 heterodimer, HRG does not accelerate cell‐cycle entry. Instead, EGF promotes earlier restriction‐point passage via ERK–FOS signaling, whereas HRG activates the AKT–MYC axis, driving transcriptional heterogeneity ...
Ririn Rahmala Febri   +5 more
wiley   +1 more source

Optimized Current and Speed Fractional-Order PID Control in Electrical Drives

open access: yes, 2022
Fractional-order PID controllers are suitably designed for cascade control of permanent magnet synchronous motor drives. The stator current and the speed are controlled in two nested loops.
Jakovljević, B, Maione, G., Lino, P.
core   +1 more source

FRACTIONAL ORDER SYSTEM IDENTIFICATION BASED ON GENETIC ALGORITHMS [PDF]

open access: yesJournal of Engineering Science and Technology, 2013
System identification deals with estimating the plant parameters under control using input-output measuring data. Most of practical plants have fractional order dynamic properties which are based on integration and differentiation of noninteger order. In
MAZIN Z. OTHMAN, EMAD A. AL-SABAWI
doaj  

Fractional Integration and Its Influence on Unit Root and Co- Integration Analysis

open access: yesEconomia Aplicada, 2016
This study assesses the power of traditional unit root and co-integration tests when they are applied to fractionally integrated stochastic processes in the 0 ≤ d ≤ 1 range.
Guilherme de Oliveira Lima C. Marques
doaj   +1 more source

On two special functions, generalizing the Mittag-Leffler type function, their properties and applications

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2012
Two special functions, concerning Mittag-Leffler type functions, are studied. The first is the modification of generalized Mittag–Leffler function, which was introduced by A. A. Kilbas and M. Saigo; the second is the special case of the first one.
E. N. Ogorodnikov
doaj   +3 more sources

Emerging experimental and computational methods for studying redox‐regulated structural transitions

open access: yesFEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass   +2 more
wiley   +1 more source

A fractional calculus on arbitrary time scales: fractional differentiation and fractional integration

open access: yes
We introduce a general notion of fractional (noninteger) derivative for functions defined on arbitrary time scales. The basic tools for the time-scale fractional calculus (fractional differentiation and fractional integration) are then developed.
Torres, D. F. M.   +2 more
core   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Laboratory experiments on fractional order PI control of a servo system with delay

open access: yes, 2013
Fractional order controllers may guarantee an enhanced robustness of the controlled loops with respect to parameter variations of the plant. Moreover, their tuning rules offer more design degrees of freedom by taking advantage of the fractional order of ...
Maione, G., Lino, P.
core   +1 more source

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

open access: yesFEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav   +2 more
wiley   +1 more source

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