نتایج جستجو برای: pole

تعداد نتایج: 20544  

The switched reluctance motor is a simple and robust machine, which has found application over a wide power and speed ranges in different shapes and geometries. This paper introduces a new configuration for a two phase unidirectional switched reluctance motor/field assisted generator. The proposed novel motor/generator consists of two magnetically independent stator and rotor sets (layers), whe...

In this paper, we present a mathematical model for determining the optimal radius of the iron pole shape in spoke-type permanent-magnet (PM) machines (STPMM) in order to minimize the pulsating torque components. The proposed method is based on the formal resolution of the Laplace’s and Poisson’s equations in a Cartesian pseudo-coordinate system with respect to the relative permeability effect o...

Journal: :Cell 1991
C Wang R Lehmann

Segmental pattern in the Drosophila embryo is established by two maternal factors localized to the anterior and posterior poles of the egg cell. Here we provide molecular evidence that the localized posterior factor is the RNA of the nanos (nos) gene. nos RNA is localized to the posterior pole of early embryos, and nos protein acts at a distance to direct abdomen formation. Synthetic nos RNA ha...

Journal: :Energies 2022

Pole-phase changing induction machines (IMs) offer the capability to extend torque-speed envelope compared their fixed pole-phase counterparts. Dynamic pole-changing can achieve higher torque levels at lower speeds, utilizing pole numbers, and extended flux-weakening range with pole-number operations. This paper investigates design impact on optimum behavior respective split of operating region...

Journal: :Journal of bacteriology 1984
J L Cánovas E F Tresguerres A M Yousif J F López-Sáez M H Navarrete

The pattern of segregation of DNA in Escherichia coli K-12 was analyzed by labeling replicating DNA with 5-bromodeoxyuridine followed by differential staining of nucleoids. Three types of visible arrangement were found in four-nucleoid groups derived from a native nucleoid after two replication rounds. Type A, segregation of both old strands toward cell poles, appeared with the highest frequenc...

Journal: :CoRR 2016
Tukaram D. Dongale P. K. Gaikwad Rajanish K. Kamat

The present paper investigates state space analysis of memristor based series and parallel RLCM circuits. The stability analysis is carried out with the help of eigenvalues formulation method, pole-zero plot and transient response of system. The state space analysis is successfully applied and eigenvalues of the two circuits are calculated. It is found that the, system follows negative real par...

Journal: :Acta neurobiologiae experimentalis 1972
I Lukaszewska

Ablation of the frontal pole was followed by the deterioration of returning behavior; position discrimination in an enclosed T maze was also affected. Both tests required the utilization of response produced cues: In the elevated T maze, in which extra-maze visual cues were available, the lesion had no effect on position discrimination. Introduction of differential visual cues to the enclosed T...

Journal: :Genetics 2010
Keren L Witkin Jennifer M Friederichs Orna Cohen-Fix Sue L Jaspersen

The Saccharomyces cerevisiae nuclear membrane is part of a complex nuclear envelope environment also containing chromatin, integral and peripheral membrane proteins, and large structures such as nuclear pore complexes (NPCs) and the spindle pole body. To study how properties of the nuclear membrane affect nuclear envelope processes, we altered the nuclear membrane by deleting the SPO7 gene. We ...

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