Results 51 to 60 of about 460,467 (309)

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

The Effects of Pulsed Current Parameters on Porosity of Copper Prepared by Jet Electrodeposition

International Journal of Electrochemical Science, 2019
Surface texturing has become an increasingly prevalent approach to improve the tribological properties of materials. The present work aims to study a novel texturing technology.
Hui Fan, Zhijing Li, Yangpei Zhao, Shankui Wang, Sainan Cao   +4 more
doaj   +1 more source

All-optical TDM data demultiplexing at 80 Gbit/s with significant timing jitter tolerance using a fiber Bragg grating based rectangular pulse switching technology

, 2003
We demonstrate the use of fiber Bragg grating based pulse-shaping technology to provide timing jitter tolerant data demultiplexing in an 80 Gb/s all-optical time division multiplexing (OTDM) system. Error-free demultiplexing operation is achieved with ~6
Jeppesen, P., Berg, Kim Skaalum, Richardson, J. P., Richardson, D., Ibsen, M., Richardson, D.J., Ibsen, Morten, Jeppeson, P., Lee, J., Clausen, Anders, Clausen, A.T., Oxenløwe, Leif Katsuo, Jeppesen, Palle, Berg, K.S., Lee, J. H., Lee, J.H., Oxenløwe, L.K.   +16 more
core   +1 more source

Decreased cold‐sensing function of the transient receptor potential channel TRPM8 from tailed amphibians

FEBS Open Bio, EarlyView.
Despite frogs avoiding low temperatures, examination of four salamander species revealed that none avoided cold and all possessed cold tolerance. Functional analysis of TRPM8, a cold sensor, showed that all salamander TRPM8s had lost their cold sensitivity.
Tadahiro Sawao, Daiki Kobayashi, Shogo Hori, Osamu Saitoh   +3 more
wiley   +1 more source

Effect of Current Type and Particle Size on Wear and Corrosion Behaviour of Electroplated Ni-B4C Composite Coatings [PDF]

Iranian Journal of Materials Science and Engineering
Ni-B4C nanocomposite coatings were deposited onto a pure Cu substrate using electroplating. Different types of current, including direct current (DC), pulse reverse current (PRC), and unipolar pulse current (PC), were applied using various concentrations
Seyed Ehsan Khadempir, Behnam Lotfi, Zohreh Sadeghian   +2 more
doaj  

Performance Analysis of LLC Resonant and Pulse Width Modulation Direct Current- Direct Current Converters for Buck and Boost Operation

This paper accentuates the study of LLC resonant converter by a comparative analysis of the properties of LLC resonant and pulse width modulation direct current-direct current converters.
Mohammad Mustafizur Rahman, Arif Ahammad, Ifte Khairul Amin, Rashed Abdullah   +3 more
core   +1 more source

Calibrating mars orbiter laser altimeter pulse widths at mars science laboratory candidate landing sites

, 2014
Accurate estimates of surface roughness allow quantitative comparisons between planetary terrains. These comparisons enable us to improve our understanding of commonly occurring surface processes, and develop a more complete analysis of candidate landing
Muller, J.-P., Gupta, S., Poole, Wil, Grindrod, Peter M., Muller, Jan-Peter, Poole, W., Gupta, Sanjeev   +6 more
core   +1 more source

Time‐restricted feeding prior to Mycobacterium tuberculosis infection reduces tissue CD4+ T cells with limited impact on bacterial clearance

FEBS Open Bio, EarlyView.
Time‐restricted feeding (TRF) in mice increased liver fatty acid oxidation and decreased fatty acid biosynthesis. These alterations persisted when TRF was discontinued and the host was infected with Mycobacterium tuberculosis. Pre‐exposure to TRF did not alter tissue (lung and spleen) mycobacterial burden but significantly reduced CD3+ T cells in lungs
Ashish Gupta, Nidhi Yadav, Subhasmita Das, R. Rajendra Kumar Reddy, Nupur Sharma, Amol Ratnakar Suryawanshi, Jaswinder Singh Maras, Ranjan Kumar Nanda   +7 more
wiley   +1 more source

High current transistor pulse generator [PDF]

, 1991
A solid state pulse generator capable of delivering high current trapezoidally shaped pulses into an inductive load has been developed at SLAC. Energy stored in the capacitor bank of the pulse generator is switched to the load through a pair of ...
Nesterov, V., Cassel, R.
core   +2 more sources

ОСОБЕННОСТИ ФОРМИРОВАНИЯ ИСПЫТАТЕЛЬНОГО ИМПУЛЬСА ТОКА ПРИ ЕГО ИДЕНТИФИКАЦИИ НАБОРОМ КОНТРОЛИРУЕМЫХ ПАРАМЕТРОВ И ИНТЕГРАЛОМ ДЕЙСТВИЯ

Elektrotehnìka ta Elektroenergetika, 2009
Рассмотрен вопрос формирования испытательных импульсов тока, заданных амплитудно-временными параметрами и интегралом действия. Предложен метод выбора элементов генератора при нечетком определении контролируемых параметров формируемого импульса тока.
A. A. Petkov
doaj