نتایج جستجو برای: main switch

تعداد نتایج: 648271  

Journal: :Journal of physiology and pharmacology : an official journal of the Polish Physiological Society 2007
A K Brill K Woelke R Schädlich C Weinz G Laier-Groeneveld

We report on a 65-year-old female who complained of recurrent bronchopulmonary infections since 1999. She suffered from permanent cough and progressive dyspnea. The diagnosis of amyloidosis was made by bronchoscopic tissue biopsies, during which severe bleeding occurred. Argon-plasma-laser treatment stopped the bleeding and resulted in a successful recanalization of the left main bronchus. The ...

1997
M. Becker A.-L. Beylot

Performance of ATM networks will depend on switch performance and architecture. In this paper a set of eleven questions is presented in order to be able to study the performance. It is necessary to clearly identify the main characteristics of the switch architecture and the traffic that are considered. They concern the level of study, the placement of the memory, the monopath or multipath archi...

Journal: :Interactive cardiovascular and thoracic surgery 2009
Nael Al-Sarraf Hassan Jamal-Eddine Fatma Khaja Adel K Ayed

Foreign body (FB) aspiration is commonly seen in children and less commonly in the elderly. However, due to some social and cultural factors, a distinct group of tracheobronchial FB aspiration is increasingly recognized. We sought to assess our experience with such entity. A retrospective review of all cases with veil pin tracheobronchial FB aspiration in a single center over a 13-year period w...

A. Bahari, H. Mohammadi M. Yavari P. Zamani,

The periodic trimming of the long hairs growing at the distal end of the tail -switch trimming- is humane alternative of tail docking. The purpose of this study was to determine the influence of switch trimming on somatic cell count (SCC), California mastitis test (CMT) and udder cleanliness of lactating cows in a free-stall dairy farm. In the present study, 219 healthy, pregnant Holstein cows ...

Journal: :IEEE Trans. Industrial Electronics 2008
Esam H. Ismail Ahmad J. Sabzali Mustafa A. Al-Saffar

A buck–boost-type unity power factor rectifier is proposed in this paper. The main advantage of the proposed rectifier over the conventional buck–boost type is that it can perform input power factor correction (PFC) over a wider voltage conversion range. With a single switch, a fast well-regulated output voltage is achieved with a zero-current switch at turn-on. Moreover, the switch voltage str...

In this paper, a new non-isolated transformerless high step up Dc-Dc converter with low voltage stress on the active switch for solar energy application is proposed. The converter topology is simple, which makes the control scheme simple. In this converter, only one active switch is used which makes reducing the switching power loss. The voltage gain of the proposed converter is higher than the...

In this paper, we present a switch based on coupling and resonance in thegraphene plate and rings operating at 10 THz. This structure consists of several layers ofHexagonal Boron Nitride (hBN), SiO2 and P+Si, such that graphene plates and rings areinside the hBN layer. The terahertz wave is incident from the upper part of the switchand Surface Plasmons (SPs) are excited ...

Journal: :international journal of advanced biological and biomedical research 2013
seyed mahdi seyed hosseini mohammad agha mohammadi mohsen mousavi

in the present study, theoretical chemical reactivates photo isomerization in cis-retinal as a natural photo switch in vision. dft hybrid functional, b3lyp and, post-hf method, were the theoretical methods applied utilizing g09 software. 6-31g+ (d,p) basis set employed for structural optimizations, and single point computations performed using b3lyp/6-31g+(d,p). the isomers cis molecule retinal...

Journal: :Journal of physics 2021

Abstract Aiming at the fast opening and closing speed of GIS isolation/grounding switch, manual observation is more difficult, so it difficult to judge current switch status. This paper proposes an OpenCV-based image identification algorithm identify position movable contact during process isolating thereby judging state switch. system uses Raspberry Pi as main hardware core, server drives CMOS...

1998
Thomas L. Rodeheffer James B. Saxe

This paper focuses on two desired properties of cell-based switches for digital data networks: (1) data cells should not be detained inside the switch any longer than necessary (the work-conserving property) and (2) data cells that have been in the switch longer (older cells) should have priority over younger cells (the order-conserving property). A well-known, but expensive design of a workand...

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