Results 101 to 110 of about 5,531,966 (305)

Polynomial Inverse Integrating Factors, First Integral and Non-Existence of Limit Cycles in the Plane for Quadratic Systems

Science Journal of University of Zakho, 2017
The main purpose of this paper is to study the existence of polynomial inverse integrating factor and first integral, and non-existence of limit cycles for all systems. Furthermore, we consider some applications.
Ahmed M. Hussien
doaj   +1 more source

Gas cells for tunable diode laser absorption spectroscopy employing optical diffusers. Part 2: Integrating spheres [PDF]

, 2010
We have studied the effects of random laser speckle and self-mixing interference on TDLS based gas measurements made using integrating spheres. Details of the theory and TDLS apparatus are given in Part 1 of this paper and applied here to integrating ...
Hodgkinson, Jane, Tatam, Ralph P., Masiyano, Dackson   +2 more
core   +1 more source

Nutrient/TOR signaling controls adipose mitochondrial transcription factor A (TFAM) to regulate organismal growth in Drosophila

FEBS Letters, EarlyView.
Animals must match their growth rate to available nutrients. We show that in Drosophila larvae, the nutrient‐sensing TOR kinase controls growth by regulating levels of TFAM, a key regulator of mitochondrial function, in the adipose tissue. When nutrients are abundant, high TOR activity suppresses TFAM, lowering mitochondrial bioenergetic activity and ...
Shrivani Sriskanthadevan‐Pirahas, Shahoon Khan, Abhishek Sharma, Byoungchun Lee, Savraj S. Grewal   +4 more
wiley   +1 more source

Non-existence of limit cycles via inverse integrating factors

Electronic Journal of Differential Equations, 2011
It is known that if a planar differential systems has an inverse integrating factor, then all the limit cycles contained in the domain of definition of the inverse integrating factor are contained in the zero set of this function.
Leonardo Laura-Guarachi, Osvaldo Osuna, Gabriel Villasenor-Aguilar   +2 more
doaj  

Modeling Pavement Deterioration on Nepal’s National Highways: Integrating Rainfall Factor in a Hazard Analysis

Infrastructures
Pavement deterioration is influenced by various factors with degradation rates varying widely depending on the type of pavement, its use, and the environment in which it is located.
Manish Man Shakya, Kotaro Sasai, Felix Obunguta, Asnake Adraro Angelo, Kiyoyuki Kaito   +4 more
doaj   +1 more source

Efficient Online Transcription Factor Binding Site Adjustment by Integrating Transitive Graph Projection with MoRAine 2.0

Journal of Integrative Bioinformatics, 2010
We investigated the problem of imprecisely determined prokaryotic transcription factor (TF) binding sites (TFBSs). We found that the identification and reinvestigation of questionable binding motifs may result in improved models of these motifs ...
Wittkop Tobias, Rahmann Sven, Baumbach Jan   +2 more
doaj   +1 more source

Peripheral lysosomes recruit PLEKHG3 to focal adhesions and restrain protrusion dynamics

FEBS Letters, EarlyView.
Proximity‐dependent labeling at the LAMTOR complex revealed the Rho GEF PLEKHG3 as a lysosome‐proximal protein directing the study toward the influence of lysosome positioning on actin dynamics and cell motility. We show that PLEKHG3 colocalizes with lysosomes at focal adhesion sites and observe that forced peripheral dispersion of lysosomes hinders ...
Rainer Ettelt, Ana‐Maria Sandru, Georg Vucak, Sebastian Didusch, Biljana Riemelmoser, Karin Ehrenreiter, Markus Hartl, Lukas A. Huber, Manuela Baccarini   +8 more
wiley   +1 more source

A Novel High-Power-Factor Single-Switch Electronic Ballast for Compact Fluorescent Lamps

Eletrônica de Potência, 2004
In this paper a high-power-factor electronic ballast for compact fluorescent lamps based on the class E amplifier and featuring low voltage stress across the switch is presented.
Mario Ponce, Jaime E. Arau, Rene Osorio, Mario A. Juarez, J. Marcos Alonso   +4 more
doaj   +1 more source

Factorization in integral domains

Journal of Pure and Applied Algebra, 1990
Les AA. appellent ``atomique'' un anneau intègre R dans lequel tout élément est produit fini des éléments irréducibles. Sont étudiés les anneaux atomiques et les anneaux intègres avec la condition maximale pour les idéaux principaux, les anneaux atomique dans lesquels pour tout élément x non nul et non inversible il existe N(x) tel que pour toute ...
Anderson, D.D., Anderson, David F., Zafrullah, Muhammad   +2 more
openaire   +2 more sources

Liver organoids: modelling complexity in homeostasis and disease

FEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source