Results 91 to 100 of about 2,325 (293)

Stability analysis of grid-connected PV generation with an adapted reactive power control strategy

The Journal of Engineering, 2019
The static VAR compensator is widely applied in large-scale grid-connected photovoltaic (PV) generation to participate in voltage regulation of power system, which ignores the reactive power regulation capability of PV inverter.
Gangui Yan, Yuru Cai, Qi Jia, Shuai Liang   +3 more
doaj   +1 more source

Effects of a falls exercise intervention on strength, power, functional ability and bone in older frequent fallers: FaME (Falls Management Exercise) RCT secondary analysis [PDF]

, 2019
OBJECTIVES: Falls Management Exercise (FaME) has been shown to reduce falls in frequent fallers and in lower risk sedentary older people. The effects of FaME on the strength, power, physical function and bone health of frequently falling older women are ...
Dinan-Young, Susie, Rutherford, Olga M., Sandlund, Marlene, Skelton, Dawn A.   +3 more
core   +1 more source

HIV‐1 establishes immediate latency in T cells expressing the viral Nef protein

FEBS Open Bio, EarlyView.
Nef is a viral protein often omitted from HIV‐1 reporter viruses. Consequently, its role in viral latency is unclear. We developed three novel dual reporter HIV‐1 derivatives that express Nef and allow for detection of latent and productive infection. Using these reporters, we show that Nef does not affect the establishment of immediate viral latency ...
Cindy Lam, Ivan Sadowski
wiley   +1 more source

Coordination control strategy for LLCL-filter based grid-tied inverter with indirect sliding mode power control and virtual impedance

The Journal of Engineering, 2019
The LLCL filter is widely used in grid-tied inverter systems due to its small size, low cost and good attenuation for high-frequency harmonics. However, the LLCL filter resonance phenomenon and the wide range of impedance may compromise the system ...
Lizhen Wu, Tengfei Liu, Xiaohong Hao
doaj   +1 more source

Phase-ambiguity resolution for QPSK modulation systems. Part 2: A method to resolve offset QPSK [PDF]

Part 2 presents a new method to resolve the phase-ambiguity for Offset QPSK modulation systems. When an Offset Quaternary Phase-Shift-Keyed (OQPSK) communications link is utilized, the phase ambiguity of the reference carrier must be resolved.
Nguyen, Tien Manh
core   +1 more source

A bipolar voltage modulation spectrum analysis [PDF]

, 2017
Показано негативний вплив низьких гармонік в модульованій змінній напрузі інверторів з гальванічною розв’язкою на масу їх трансформаторів. Описано спосіб формування біполярної модульованої напруги, що суттєво зменшує вміст низьких гармонік. Запропоновано
Вербицький, Євген Володимирович
core   +1 more source

Nuclear pore links Fob1‐dependent rDNA damage relocation to lifespan control

FEBS Open Bio, EarlyView.
Damaged rDNA accumulates at a specific perinuclear interface that couples nucleolar escape with nuclear envelope association. Nuclear pores at this site help inhibit Fob1‐induced rDNA instability. This spatial organization of damage handling supports a functional link between nuclear architecture, rDNA stability, and replicative lifespan in yeast.
Yamato Okada, Mina Iwaki, Kyosuke Hagiri, Rei Izumi, Masahiko Harata, Chihiro Horigome   +5 more
wiley   +1 more source

Solar PV plant for supplying ancillary services in distribution systems

The Journal of Engineering, 2019
The paper reports the latest practice in the field for solar PV integration in distribution grids in Denmark, where the communication capability of solar inverters is exploited for integrating the monitoring and control functions of solar inverters into ...
Guangya Yang, Jakob Kjaer Zimmermann, Ken H. B. Frederiksen, Thomas Helth, Hans Henrik Ipsen, Torben Vesth Hansen, Søren Baekhøj Kjaer   +6 more
doaj   +1 more source

Cutaneous Melanoma Drives Metabolic Changes in the Aged Bone Marrow Immune Microenvironment

Aging and Cancer, EarlyView.
Melanoma, the deadliest form of skin cancer, increasingly affects older adults. Our study reveals that melanoma induces changes in iron and lipid levels in the bone marrow, impacting immune cell populations and increasing susceptibility to ferroptosis.
Alexis E. Carey, Murilo Ramos Rocha, Cheyenne Palm, Vania Wang, Denys Balandin, Ethan Black, Kevin Y. Zhang, Fan Huang, Daniel J. Zabransky, Yash Chhabra, Mareike Peters, Gabriel Ghiaur, Ashani Weeraratna   +12 more
wiley   +1 more source

Hierarchical control of parallel voltage source inverters in AC microgrids

The Journal of Engineering, 2018
Here, a distributed hierarchical control strategy is proposed for the parallel operating of voltage source inverters (VSIs) in AC microgrids (MGs). For the output voltage control of a VSI, conventional double-loop proportional-integral (PI) control ...
Zhongwen Li, Zhiping Cheng, Yali Xu, Yifan Wang, Jing Liang, Jinfeng Gao   +5 more
doaj   +1 more source