Results 81 to 90 of about 425,748 (301)
Gong-kuang zidonghua, 2012 For problem of ineffectiveness of traditional line selection methods by use of single feature value caused by complex and random fault borderline, small steady component of fault and reverse phase of instantaneous zero-sequence power when single-phase ...
TIAN Shu, HE Jin-peng, NIE He
doaj
, 2010 The zero-sequence characteristics of a transformer are predominantly decided by its core construction. An analytical description for these characteristics of a five-legged transformer is presented in this study.
P.B. Bhandarkar +5 more
core +1 more source
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
Zeros of linear recurrence sequences [PDF]
manuscripta mathematica, 1999 Let \(f(x)= P_0(x) \alpha_0^x+\cdots+ P_k(x) \alpha_k^x\) be an exponential polynomial over a field \(\mathbb{K}\) of zero characteristic. For \(i=0,\dots, k\), \(0\neq P_i\in \mathbb{K}[x]\) and \(0\neq \alpha_i\in \mathbb{K}\) such that for each pair \((i,j)\) with \(i\neq j\), \(\alpha_i/ \alpha_j\) is not a root of unity.
Schlickewei, Hans Peter +2 more
openaire +2 more sources
Instantaneous Zero Sequence Voltage for Grid Energy Balancing under Unbalanced Power Generation
, 2021 An instantaneous zero sequence voltage injection method is presented in this paper. The key novelty of this method lies in the ability to provide instantaneous zero sequence voltage references using stationary abc-framework variables with no numerical ...
Rojas, CA +4 more
core +1 more source
Directed evolution of enzymes at the crossroads of tradition and innovation
FEBS Open Bio, EarlyView.An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova +2 more
wiley +1 more source
International Journal of Electrical Power & Energy SystemsThe network-level characteristics of zero-sequence currents during single-phase ground faults in existing low-resistance grounding systems with inverter-interfaced distributed generators (IIDGs) remain unclear. Moreover, the influence of IIDG integration
Jianwen Zhao, Fuyang Zeng
doaj +1 more source
On the zeros of linear recurrence sequences [PDF]
Acta Arithmetica, 2011 We improve by one exponential W. M. Schmidt's estimate for the Skolem-Mahler-Lech theorem on the number of arithmetic progressions describing the zeros of a linear recurrence sequence.
Amoroso, Francesco, Viada, Evelina
openaire +4 more sources
How phagocytic cells kill bacteria: Lessons from a professional killer
FEBS Open Bio, EarlyView.How phagocytic cells ingest and kill bacteria has been studied for more than a century, but many questions remain unanswered. The study of the amoeba Dictyostelium discoideum brings new answers, and new questions. Professional phagocytic cells such as neutrophils and macrophages, as well as free‐living soil amoebae like Dictyostelium discoideum, employ
Otmane Lamrabet, Pierre Cosson
wiley +1 more source
, 2013 Zero sequence component of current usually causes instability of the differential protection. It enters circuits through earthed terminals. The traditional way of solving the problem in differential schemes is by connecting the interposing current ...
Ezechukwu O A.
core +1 more source