نتایج جستجو برای: 5230 μmcm2
تعداد نتایج: 140 فیلتر نتایج به سال:
BACKGROUND Despite limited empirical investigation, existing scientific literature suggests that individuals with a history or current diagnosis of conduct disorder (CD) may be more likely to demonstrate reckless and aggressive driving. Much of the limited research in this field examines the impact of childhood CD on driver behaviour and collision risk in young adults. Few if any, studies asses...
We study the effects of oil-price shocks on the U.S economy combining narrative and quantitative approaches. After examining daily oil-related events since 1984, we classify them into various event types. We then develop measures of exogenous shocks that avoid endogeneity and predictability concerns. Estimation results indicate that oil-price shocks have had substantial and statistically signif...
BACKGROUND Complement activation mediates myocardial damage that occurs during ischemia and reperfusion through multiple pathways. We performed 2 separate, parallel, double-blind, placebo-controlled trials to determine the effects of pexelizumab (a novel C5 complement monoclonal antibody fragment) on infarct size in patients receiving reperfusion therapy: COMPlement inhibition in myocardial inf...
این بررسی در 34 ایستگاه در حوزه جنوبی دریای خزر در زمستان 1384 انجام شد و 6 گونه تحت عنوان Acartia clause Arcella sp Brachionus calyciflorus، Foraminiphera sp، Asplanchna sp، A. tonsa و دو گروه از مروپلانکتون Lamelibrenchiata larvea و Cirripedia مشاهده شده اند.بیش ترین فراوانی زئوپلانکتون در اعماق 5 و 10 متری به ترتیب 35215 و 5230 نمونه در متر مکعب و زی توده 213.813 و 34.301 میلی گرم در متر مکع...
Lahars frequently affect the slopes of ice-capped volcanoes. They can be triggered by volcano-ice interactions during eruptions but also by processes such as intense precipitation or by outbursts of glacial water bodies not directly related to eruptive activity. We use remote sensing, GIS and lahar models in combination with ground observations for an initial lahar hazard assessment on Iztaccı́h...
Neurosurgical oncology is one of the most exciting areas of neurosurgery.7,11,14 It deals with an interesting range of pathologies—Figure 8.1 presents the breakdown of tumor types in 5230 brain tumor procedures performed by the senior author (PB) from 1987 to 2007. This paper will discuss three aspects of neurosurgical oncology—its justification as a subspecialty; the way in which new clinical ...
Hadwiger’s Conjecture states that every k-chromatic graph has a complete minor of order k. A graph G is an inflation of a graph G if G is obtained from G by replacing each vertex v of G by a clique Cv and joining two vertices of distinct cliques by an edge if and only if the corresponding vertices of G are adjacent. We present an algorithm for computing an upper bound on the chromatic number χ(...
In this paper we propose a hierarchical framework for detecting and characterizing any types of botnets on a large-scale WiFi ISP network. In particular, we first analyze and classify the network traffic into different applications by using payload signatures and the cross-associations for IP addresses and ports. Then based on specific application community (e.g. IRC, HTTP, or Peer-to-Peer), we...
BACKGROUND Permanent atrial fibrillation (AF) is present before operation and persists after surgery in 30-40% of patients undergoing mitral valve surgery. Using the maze procedure, 75-82% of patients can be cured of AF, but the procedure is difficult and long lasting. Percutaneous radiofrequency (RF) ablation has emerged as an effective therapy for AF in recent years. AIM To assess the effic...
This paper analyzes the relationship between investment in information and communication technologies (ICT), non–ICT–investment, labor productivity and workplace reorganization. Firms are assumed to reorganize workplaces if the productivity gains arising from workplace reorganization exceed the associated reorganization costs. Two different types of organizational change are considered: introdu...
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