Results 71 to 80 of about 5,299,339 (300)
Relation between current sheets and vortex sheets in stationary incompressible MHD [PDF]
, 2012 Magnetohydrodynamic configurations with strong localized current concentrations and vortices play an important role for the dissipation of energy in space and astrophysical plasma.
D. H. Nickeler +2 more
core +3 more sources
FEBS Open Bio, EarlyView.Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley +1 more source
Journal of Modern Power Systems and Clean Energy, 2018 This paper proposes a design and control approach to parallel resonant converter (PRC) based battery chargers. The proposed approach is particularly suitable for the constant-current constant-voltage (CC-CV) charging method, which is the most commonly ...
Taha Nurettin GÜCIN +2 more
doaj +1 more source
A Null Test of the Cosmological Constant
, 2007 We provide a consistency relation between cosmological observables in general relativity with the cosmological constant. Breaking of this relation at any redshift would imply the breakdown of the hypothesis of the cosmological constant as an explanation ...
Chiba, Takeshi, Nakamura, Takashi
core +1 more source
Galaxy Clusters: Oblate or Prolate? [PDF]
, 1999 It is now well known that a combined analysis of the Sunyaev-Zel'dovich (SZ) effect and the X-ray emission observations can be used to determine the angular diameter distance to galaxy clusters, from which the Hubble constant is derived.
Asantha R. Cooray +23 more
core +4 more sources
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
Nauka ta progres transportu, 2010 The analysis of experimental methods for determination of mechanical losses of power in the hauling electric engines of direct current is presented.
A. M. Afanasov
doaj
Design of constant voltage and constant current switching power supply [PDF]
, 2015 随着电子科技日新月异的发展，每家每户使用的电器设备越来越多，而电器设备往往需要合适的电源来驱动。特别是带有锂电池的离线设备，比如吸尘器、电动车、手机、数码相机等需要高精度的恒压恒流的充电器，使之合理的充电曲线保证锂电池的充电安全和寿命。 开关电源因其小体积、低功耗、高可靠性、高效率等诸多优点受到广泛的关注。开关电源是通过PWM信号控制MOS器件开和关，使输入连续的直流电变成间断的脉冲，再通过电容电感储能滤波，将间断的脉冲滤成连续的直流电。从而可知，只要调节MOS器件的开 ...
林明威
core
Quality of Life in Chronic Pancreatitis is Determined by Constant Pain, Disability/Unemployment, Current Smoking, and Associated Co-Morbidities [PDF]
, 2017 OBJECTIVES: Chronic pancreatitis (CP) has a profound independent effect on quality of life (QOL). Our aim was to identify factors that impact the QOL in CP patients.
Abberbock, Judah +23 more
core +2 more sources
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 +5 more
wiley +1 more source