Results 51 to 60 of about 674,821 (271)

Research on DFIG-ES System to Enhance the Fast-Frequency Response Capability of Wind Farms

open access: yesEnergies, 2019
With the increasing penetration of wind power generation, the frequency regulation burden on conventional synchronous generators has become heavier, as the rotor speed of doubly-fed induction generator (DFIG) is decoupled with the system frequency.
Sijia Tu, Bingda Zhang, Xianglong Jin
doaj   +1 more source

Primary electric power generation systems for advanced-technology engines [PDF]

open access: yes, 1983
The advantages of the all electric airplane are discussed. In the all electric airplane the generator is the sole source of electric power; it powers the primary and secondary flight controls, the environmentals, and the landing gear. Five candidates for
Cronin, M. J.
core   +1 more source

Gut microbiota diversity is prognostic in metastatic hormone receptor‐positive breast cancer patients receiving chemotherapy and immunotherapy

open access: yesMolecular Oncology, EarlyView.
In this exploratory study, we investigated the relationship between the gut microbiota and outcome in patients with metastatic hormone receptor‐positive breast cancer, treated in a randomized clinical trial with chemotherapy alone or chemotherapy in combination with immune checkpoint blockade.
Andreas Ullern   +7 more
wiley   +1 more source

Research on primary frequency regulation strategies for ancillary wind power inertia based on the rotor kinetic energy

open access: yesFrontiers in Energy Research, 2023
The additional frequency control of wind turbines is an effective method to solve the problem of low inertia in power systems with high proportions of new energy.
Li Sun   +5 more
doaj   +1 more source

Lyman edges in supermassive black hole binaries

open access: yes, 2014
We propose a new spectral signature for supermassive black hole binaries (SMBHBs) with circumbinary gas disks: a sharp drop in flux blueward of the Lyman limit. A prominent edge is produced if the gas dominating the emission in the Lyman continuum region
Generozov, Aleksey, Haiman, Zoltan
core   +1 more source

A synthetic benzoxazine dimer derivative targets c‐Myc to inhibit colorectal cancer progression

open access: yesMolecular Oncology, EarlyView.
Benzoxazine dimer derivatives bind to the bHLH‐LZ region of c‐Myc, disrupting c‐Myc/MAX complexes, which are evaluated from SAR analysis. This increases ubiquitination and reduces cellular c‐Myc. Impairing DNA repair mechanisms is shown through proteomic analysis.
Nicharat Sriratanasak   +8 more
wiley   +1 more source

Secular evolution of Milky Way-type galaxies

open access: yes, 1991
The internal evolution of disk galaxies like the Milky Way are driven by non-axisymmetries (bars) and the implied angular momentum transfer of the matter; baryons are essentially driven inwards to build a more concentrated disk.
Daisuke Nagashima, 永嶋 大典
core   +1 more source

Stepwise Inertial Intelligent Control of Wind Power for Frequency Regulation Based on Stacked Denoising Autoencoder and Deep Neural Network

open access: yesShanghai Jiaotong Daxue xuebao, 2023
Stepwise inertial control (SIC) provides a step-increase of power after load fluctuation, which can effectively prevent system frequency decline and ensure the safety of grid frequency. However, in the power recovery stage, secondary frequency drop (SFD)
WANG Yalun, ZHOU Tao, CHEN Zhong, WANG Yi, QUAN Hao
doaj   +1 more source

Children’s body composition and stress, the ChiBS study : aims, design, methods, population and participation characteristics [PDF]

open access: yes, 2012
BACKGROUND: The last decades, the prevalence of childhood obesity has increased. Apart from other lifestyle factors, the effect of chronic psychosocial stress on the development of obesity has been recognized.
De Henauw, Stefaan   +6 more
core   +2 more sources

Aggressive prostate cancer is associated with pericyte dysfunction

open access: yesMolecular Oncology, EarlyView.
Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero   +11 more
wiley   +1 more source

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