منابع مشابه
Biofilms-The Unforgiving Film in Dentistry (Clinical Endodontic Biofilms)
It is evident that oral microorganisms have the capacity to respond and adapt to changing environmental conditions. Individual microorganisms are able to sense and process the chemical information from the environment and thereby adjust their phenotypic properties. The term biofilm is used to indicate the presence of a film of condensed microorganisms on any surface. Bacterial condensations on ...
متن کاملRural Roads
INTRODUCTION Rural Road connectivity is a key component of rural development, since it promotes access to economic and social services, thereby generating increased agricultural productivity, non-agriculture employment as well as non-agricultural productivity, which in turn expands rural growth opportunities and real income through which poverty can be reduced. A study (Fan et al. 1999) carried...
متن کاملO1: Roads Safety and Neurotrauma
Road traffic accidents account for approximately 3000 deaths on a daily basis, and 50 million injuries and 1.2 million deaths each year. In low-income and middle income countries, road traffic accidents account for 85% of deaths and 90% of annual disability. Casualties of this magnitude are a serious problem throughout the world and create a significant impact on society. In addition, neurologi...
متن کاملRoads and Innovation
We exploit historical data on planned highways, railroads, and exploration routes as sources of exogenous variation in order to estimate the effect of interstate highways on regional innovation: a 10% increase in a region’s stock of highways causes a 1.7% increase in regional patenting over a five-year period. In terms of the mechanism, we report evidence that roads facilitate local knowledge f...
متن کاملGrowing Urban Roads
We present a simple simulation of road growing dynamics that can generate global features as belt-ways and star patterns observed in urban transportation infrastructure. The road growing dynamics consist of two steps: Identifying the maximum transportation potential bewteen two locations within the city, followed by the generation of the least expensive road between these two locations. The sim...
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ژورنال
عنوان ژورنال: Injury Prevention
سال: 2010
ISSN: 1353-8047
DOI: 10.1136/ip.2010.029215.1033