Results 31 to 40 of about 125,561 (280)

Enhanced Transformer Overcurrent Protection via Oil Temperature Acceleration

Energies
When a transformer is in a long-term heavy load operation state, the oil temperature reaches the alarm temperature; if a slight fault occurs inside the transformer, traditional inverse time current protection and other protections that react to phase ...
Qingguo Liu, Nuonan Mei, Zheng Wang, Jiahang Sun, Shanshan Zhou   +4 more
doaj   +1 more source

Transforming Environmental Health Protection [PDF]

Science, 2008
We propose a shift from primarily in vivo animal studies to in vitro assays, in vivo assays with lower organisms, and computational modeling for toxicity assessments.
Francis S. Collins, George M. Gray, John R. Bucher   +2 more
openaire   +1 more source

Economic criteria for optimizing the number and load factor of mining transformers [PDF]

, 2019
Purpose. This article discusses how to choose the optimal number and load factor, respectively the economic power in the first year of mining power transformers operation. The analysis is carried out based on technical-economic criteria.
Deliu, F, Pana, L, Pasculescu, D, Pasculescu, V.M.   +3 more
core   +1 more source

Prevention of the current transformer saturation by using negative resistance

IET Generation, Transmission & Distribution, 2021
In the power grid, various conditions may occur that saturate the core of a current transformer. Saturation of the protection core of the current transformers can cause a malfunction in the protection relays.
Saeed Sanati, Yousef Alinejad‐Beromi
doaj   +1 more source

Introducing small storage capacity at residential PV installations to prevent overvoltages [PDF]

, 2011
Low voltage distribution feeders are designed for unidirectional energy supply from transformer to consumer. However, the implementation of small-scale PV production units on local utilities may result in bidirectional energy flows.
Cappelle, Jan, Debruyne, Colin, Desmet, Jan, Van Maerhem, Thomas, Vanalme, Johan, Verhelst, Bart, Vispoel, Stijn   +6 more
core   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Phase Shifting Transformer Electromagnetic Model Dedicated for Power System Protection Testing in a Transient Condition

Energies, 2021
Complex phase shifting transformer protection scheme and complexity of the object itself created a need to use simulation programs for their analysis.
Tomasz Bednarczyk, Mateusz Szablicki, Adrian Halinka, Piotr Rzepka, Paweł Sowa   +4 more
doaj   +1 more source

Kajian Pemasangan Lightning Arrester pada Sisi Hv Transformator Daya Unit Satu Gardu Induk Teluk Betung [PDF]

, 2017
Generally, The power centers are connected to the air transmission line, and the airborne transmission channel is susceptible to disturbances that are affected from outside the system, one of which is a lightning strike.
Jurnal, R. T. (Redaksi)
core  

Hematopoietic (stem) cells—The elixir of life?

FEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo, Jonah Anderson, Emilie Dinh Vedrenne, Noël Yeh Martín, Jette Lengefeld   +4 more
wiley   +1 more source

Improved scheme based on memory voltage for transformer differential protection considering the effects of PLL

IET Generation, Transmission & Distribution
The phase‐locked loop (PLL) is a critical control module applied in the control system of renewable energy sources (RESs) to synchronize with the grid voltage.
Tao Zheng, Ruozhu Zhang, Ying Chen, Jingwen Ai, Yilin Sun   +4 more
doaj   +1 more source