نتایج جستجو برای: lead block

تعداد نتایج: 491706  

Journal: :Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology 2010
Ronak Rajani Sanjay Prasad Sean O'Nunain Manav Sohal Azad Ghuran

We present the case of a 55-year-old male who presented with symptoms of dyspnoea and pre-syncope. A 12 lead electrocardiogram demonstrated extensive conduction abnormalities with 2:1 heart block, right bundle branch block and a small Q wave in lead V(1.) This indicated significant myocardial and septal involvement. Echocardiography confirmed the presence of right ventricular infiltration and d...

2013
Robert Graff

The Idaho Division of Public Health conducted a pilot study to produce a lead-exposure-risk map to help local and state agencies better target childhood lead-screening efforts. Priority lead-screening areas, at the block group level, were created by using county tax assessor data and geographic information system software. A series of maps were produced, indicating childhood lead-screening prev...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2004
Cheryl M Stancik Adrien R Lavoie Jan Schütz Paulina A Achurra Peter Lindner Alice P Gast Robert M Waymouth

We synthesize a series of block copolymers comprising a polystyrene (PS) block and an imidazolium-functionalized PS (IL) block and characterize their assembly properties. We use small-angle neutron scattering and dynamic light scattering to determine the micelle size and shape in dilute solutions and to assess the micelle interactions in concentrated solutions. By studying a series of copolymer...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز 1389

امروزه چرخدنده های پلیمری جایگاه خاصی را در کاربردهای انتقال حرکت به خود اختصاص داده است. سبکی وزن، قیمت تمام شده پایین، مقاومت مناسب در شرایط محیطی خورنده و توانایی انتقال دور بدون نیاز به روانکار خارجی از جمله مزایای چرخدنده های پلیمری به شمار می آید. اساسی ترین محدویت این نوع چرخدنده ها در مقایسه با چرخدنده های فلزی، محدودیت در خواص مکانیکی و همچنین پایداری ابعادی آنها در شرایط دمایی مختلف م...

2017
Samuel Chauveau Arnaud Dulac Laurent Sebbag Elodie Morel Philippe Chevalier

High defibrillation threshold (DFT) and defibrillation failure can lead to intractable ventricular arrhythmias. Additional coronary sinus coil is an effective strategy to achieve marked reduction in DFT. However, physicians should retain this might prevent future coronary sinus lead placement in case the patient would develop complete left bundle branch block.

2005
Anton BŘEZINA Jaroslav POLEC Andrej VARCHOLA

Lately, great concern in image processing is devoted to region-oriented methods. Region-oriented image representation offers several advantages over block-oriented approach, e.g. adaptation to the local image characteristics. New algorithms are necessary for image coding, if we work with arbitrarily shaped image regions, called segments, instead on rectangular blocks. The original approach for ...

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